A fully automatic pore water pressure sensor

Abstract

This utility model relates to the field of sensors, and in particular to a fully automatic pore water pressure sensor. The sensor includes a pressure probe, a cable, a traction rope, a connecting ring, a rotating ring, and support rods. The outer ring of the pressure probe has a protrusion. One end of the traction rope is connected to the top of the connecting ring. Both the connecting ring and the rotating ring are fitted onto the pressure probe, with the connecting ring positioned above the rotating ring and connected by a bearing. Two support rods are symmetrically positioned on the left and right sides of the rotating ring. One end of each support rod has a roller component, which is tilted to one side. The roller component abuts against the borehole wall as the support rod extends and retracts. Rotating the roller component moves the pressure probe within the borehole. This utility model, by using the support rods and the borehole sidewall to pull the pressure probe into the borehole, increases the controllability of the pressure probe's movement, reduces its installation space requirements, and is more suitable for information collection and management in waterway foundations.

Description

Technical Field

[0001] This utility model relates to the field of sensors, and in particular to a fully automatic pore water pressure sensor. Background Technology

[0002] To address the scarcity of soil resources, land reclamation has gradually become a major initiative to utilize marine resources to solve engineering land use problems. Among these methods, surcharge preloading, a traditional soft soil foundation treatment method, requires real-time monitoring during its implementation. This necessitates the use of pore water pressure sensors, which are buried underground primarily to monitor changes in soil water pressure, enabling intelligent management of soil water pressure testing. However, the installation process requires placing the sensor in a borehole and then filling it with sand, expansive soil, and grouting for sealing. Since the sensors are often transported using long poles, they are prone to displacement, leading to errors. Therefore, a fully automatic pore water pressure sensor is needed. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a fully automatic pore water pressure sensor with the advantages of automatic transportation and high placement accuracy.

[0004] This utility model provides a fully automatic pore water pressure sensor, including a pressure probe, a cable, a traction rope, a connecting ring, a rotating ring, and support rods. The cable is coaxially mounted on the top of the pressure probe, and the outer ring of the pressure probe has a protrusion. One end of the traction rope is connected to the top of the connecting ring. Both the connecting ring and the rotating ring are fitted onto the pressure probe, with the connecting ring positioned above the rotating ring and connected to it via a bearing. Two support rods are symmetrically positioned on the left and right sides of the rotating ring, with a roller at one end of each support rod. The roller is tilted to one side and abuts against the borehole wall as the support rod extends and retracts. Rotating the roller causes the pressure probe to move within the borehole.

[0005] Furthermore, the sensor also includes a counterweight that is movably positioned above the pressure probe and has channels running through its top and bottom for cables and traction ropes to pass through.

[0006] Furthermore, the strut includes a sleeve, an inner rod, and a spring. One end of the sleeve is connected to a rotating ring, the inner rod is nested within the sleeve, and the spring connects the sleeve and the inner rod based on the preload force of the inner rod extending from the sleeve.

[0007] Furthermore, the inner rod has an auxiliary block on the top of the side near the roller component.

[0008] Furthermore, the angle between the roller component and its central axis is between 30° and 60°.

[0009] By adopting the above technical solution, the beneficial effects of this utility model are: This invention uses a support rod and the sidewall of the borehole to pull the pressure probe into the borehole, increasing the controllability of the pressure probe's movement and reducing its installation space requirements. At the same time, a counterweight is set to determine the position of the pressure probe after it reaches the target position. Combined with the rotational retraction of the rotating ring, this reduces the displacement of the pressure probe during the installation process and improves its installation accuracy.

[0010] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure.

[0011] Undoubtedly, such and other objects of this invention will become more apparent after the following detailed description of the preferred embodiments, which are illustrated in various accompanying drawings and illustrations.

[0012] To make the above and other objects, features and advantages of this utility model more apparent and understandable, one or more preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0013] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0014] In the accompanying drawings, the same parts use the same reference numerals, and the drawings are schematic and not necessarily drawn to actual scale.

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one or more embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on such drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of a fully automatic pore water pressure sensor according to the present invention; Figure 2 This is an exploded view of a fully automatic pore water pressure sensor according to the present invention. Explanation of key figure labels: 1. Pressure probe; 11. Convex part; 2. Cables; 3. Towing rope; 4. Connecting ring; 5. Rotating ring; 6. Support poles; 61. Roller component; 62. Sleeve body; 63. Inner rod; 64. Spring; 65. Auxiliary block; 7. Counterweight. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0018] Reference Figure 1-2 This utility model provides a fully automatic pore water pressure sensor, including a pressure probe 1, a cable 2, a traction rope 3, a connecting ring 4, a rotating ring 5, and a support rod 6.

[0019] The pressure probe 1 is a conventional pore water pressure probe 1, such as a vibrating wire pore water pressure probe 1 or a piezoresistive pore water pressure probe 1. The pressure probe 1 collects the pore water conditions in the soil environment and transmits the signal to the control center. The control center sets a threshold, and when the detected value reaches the threshold, it triggers automated valve control or an alarm. The cable 2 is coaxially mounted on the top of the pressure probe 1. The outer ring of the pressure probe 1 has a protrusion 11. One end of the traction rope 3 is connected to the top of the connecting ring 4. The traction rope 3 is kept straight during use by the rotating ring 5 and the support rod 6 through external force. Both the connecting ring 4 and the rotating ring 5 are sleeved on the pressure probe 1. The connecting ring 4 is located above the rotating ring 5 and the two are connected by a bearing. The two support rods 6 are symmetrically arranged on the left and right sides of the rotating ring 5. One end of the support rod 6 is equipped with a roller 61, which is tilted to one side at an angle between 30° and 60° with its central axis. The roller component 61 abuts against the borehole wall under the extension and retraction of the support rod 6. Starting the roller component 61 causes it to rotate, moving the pressure probe 1 within the borehole. The extension and retraction mechanism of the support rod 6 is as follows: the support rod 6 includes a sleeve 62, an inner rod 63, and a spring 64. One end of the sleeve 62 is connected to the rotating ring 5. The inner rod 63 is nested within the sleeve 62. The spring 64 connects the sleeve 62 and the inner rod 63, based on the preload force of the inner rod 63 extending from the sleeve 62. An auxiliary block 65 is provided at the top of the inner rod 63 near the roller component 61 to assist the operator in controlling the movement of the inner rod 63 within the sleeve 62.

[0020] To increase the movement accuracy of the pressure probe 1, the sensor also includes a counterweight 7, which is movably positioned above the pressure probe 1 and has channels running through its top and bottom for the cable 2 and traction rope 3 to pass through.

[0021] Working principle: In use, the inner rod 63 is retracted by the auxiliary block 65, and then the sensor is placed in the borehole. Then the inner rod 63 is released so that the roller 61 abuts against the inner wall of the borehole. The roller 61 is activated so that the rotating ring 5 rotates and moves to the bottom of the borehole, thereby driving the pressure probe 1 to go deeper until it reaches the bottom. While filling the borehole with soil, the roller 61 is controlled to reverse and leave until the connecting ring 4 contacts the counterweight 7. At this time, the sand has fixed the position of the pressure probe 1. Pull the traction rope 3 so that the rotating ring 5 leaves the borehole.

[0022] It should be understood that the embodiments disclosed herein are not limited to the specific processing steps or materials disclosed herein, but should be extended to equivalent substitutions of such features as understood by those skilled in the art. It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.

[0023] The term "embodiment" in this specification refers to a specific feature or characteristic described in connection with an embodiment that is included in at least one embodiment of the present invention. Therefore, phrases or "embodiments" appearing in various places throughout the specification do not necessarily refer to the same embodiment.

[0024] Furthermore, the described features or characteristics may be incorporated into one or more embodiments in any other suitable manner. In the above description, specific details, such as thickness, quantity, etc., are provided to provide a comprehensive understanding of embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented without the aforementioned one or more specific details or may be implemented using other methods, components, materials, etc.

Claims

1. A fully automatic pore water pressure sensor, comprising a pressure probe and a cable, the cable being coaxially disposed at the top of the pressure probe, characterized in that, It also includes a traction rope, a connecting ring, a rotating ring, and support rods. The outer ring of the pressure probe has a protrusion. One end of the traction rope is connected to the top of the connecting ring. Both the connecting ring and the rotating ring are fitted onto the pressure probe. The connecting ring is located above the rotating ring and the two are connected by a bearing. The two support rods are symmetrically arranged on the left and right sides of the rotating ring. One end of the support rod is provided with a roller component. The roller component is tilted to one side. The roller component abuts against the borehole wall when the support rod extends or retracts. Starting the rotation of the roller component drives the pressure probe to move inside the borehole.

2. The fully automatic pore water pressure sensor according to claim 1, wherein, It also includes a counterweight that is movably positioned above the pressure probe and has channels running through its top and bottom for cables and traction ropes to pass through.

3. The fully automatic pore water pressure sensor according to claim 1, wherein The strut includes a sleeve, an inner rod, and a spring. One end of the sleeve is connected to a rotating ring, the inner rod is nested inside the sleeve, and the spring connects the sleeve and the inner rod based on the preload force of the inner rod extending out of the sleeve.

4. The fully automatic pore water pressure sensor according to claim 3, wherein The inner rod has an auxiliary block at the top on the side near the roller component.

5. The fully automatic pore water pressure sensor according to claim 1, wherein The angle between the roller and its central axis is between 30° and 60°.

Images