CN211143037U - Static parameter sounding probe - Google Patents
Static parameter sounding probe Download PDFInfo
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- CN211143037U CN211143037U CN201921788852.6U CN201921788852U CN211143037U CN 211143037 U CN211143037 U CN 211143037U CN 201921788852 U CN201921788852 U CN 201921788852U CN 211143037 U CN211143037 U CN 211143037U
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Abstract
The utility model discloses a static parameter sounding probe, it belongs to marine geological detection technical field, including the side rub a section of thick bamboo, set up in the awl point of a section of thick bamboo one end is rubbed to the side and set up in the base of a section of thick bamboo other end is rubbed to the side, still including measuring the body, measure the position and rub a section of thick bamboo in the side, measure the one end of the body and rub a section of thick bamboo fixed connection with the side, the other end and awl point fixed connection, the middle part and the base fixed connection of measuring the body can obtain side friction resistance and awl point resistance alone through the deformation volume of measuring the body. Because the middle part of the measuring body is fixedly connected with the base, the side friction resistance and the cone tip resistance can be independently measured without mutual influence. The measuring of the side friction resistance of the low range and the cone tip resistance of the high range can be completed through one measuring body, the number of parts is reduced while the measurement of two ranges of one part is realized, the assembly efficiency and the assembly precision are improved, the sealing position is reduced, the sealing performance and the stability are ensured, and the measurement accuracy is improved.
Description
Technical Field
The utility model relates to a marine geology surveys technical field, especially relates to a statics parameter sounding probe.
Background
The static sounding technology is a reliable in-situ testing technology in the measurement of mechanical parameters of sediments in geotechnical engineering and engineering geology, and is widely used in engineering investigation. The mechanical properties of the sediment can be obtained by static sounding. The basic principle of static sounding is to use quasi-static force (no or little impact load compared with dynamic sounding) to press a probe with sensor in it into the soil at uniform speed, because the soil in the stratum has different hardness and resistance, the sensor inputs the penetration resistance into a recording instrument via electric signal to record, and then the engineering geological survey purposes such as obtaining soil layer profile, providing shallow foundation bearing capacity, selecting pile end bearing layer and predicting single pile bearing capacity are realized via qualitative relation and statistical correlation between penetration resistance and engineering geological features of soil.
Because the penetration probe needs to measure a plurality of parameters such as side friction resistance, cone tip resistance, pore water pressure and the like in the use process, the internal parts are numerous, the assembly difficulty is high, the precision is not easy to guarantee, the stability and the sealing performance of the probe are poor, and the accuracy of the measuring result is influenced.
Although the existing force measuring element which is integrally formed can measure the side friction and the cone tip resistance simultaneously, when the side friction is measured, the measured side friction includes the cone tip resistance, so that the measurement range of the side friction is increased, the precision is reduced, and the accuracy of a measurement result is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a static parameter sounding probe to solve the technical problem that the assembly degree of difficulty that exists is big, poor stability, leakproofness are poor among the prior art.
As the conception, the utility model adopts the technical proposal that:
the utility model provides a static parameter sounding probe, including the side rub a section of thick bamboo, set up in the awl point of a section of thick bamboo one end is rubbed to the side with set up in the base of a section of thick bamboo other end is rubbed to the side, still includes:
the measuring body is located in the side rubbing barrel, the one end of the measuring body with the side rubbing barrel fixed connection, the other end of the measuring body with awl point fixed connection, the middle part of the measuring body with base fixed connection, through the deformation amount of the measuring body can obtain side rubbing resistance and awl point resistance alone.
The measuring body is hollow inside to form an accommodating space, a first threaded portion is arranged on the inner wall of the middle portion of the measuring body, and the base is fixedly connected with the first threaded portion.
The base comprises a supporting portion and an extending portion, the supporting portion is connected with the side friction cylinder, and the extending portion extends into the accommodating space and is fixedly connected with the threaded portion.
And a second threaded part is arranged on the inner wall of one end of the measuring body, and the conical tip is fixedly connected with the second threaded part.
The end part of the accommodating space forms an installation cavity, a pressure sensor is arranged in the installation cavity, and the pressure sensor and the conical tip are arranged at intervals.
Wherein, the outer wall of the measuring body is provided with a through hole communicated with the accommodating space.
One end of the measuring body is provided with a protruding part on the outer wall of the measuring body, and the protruding part is fixedly connected with the side friction cylinder.
The measuring body comprises a first supporting body and a second supporting body which are integrally formed, the joint of the first supporting body and the second supporting body is fixedly connected with the base, a first strain gauge is arranged on the first supporting body, and a second strain gauge is arranged on the second supporting body.
Wherein, the tip of awl point is provided with the permeable stone, the external diameter of permeable stone with the external diameter of a section of thick bamboo is rubbed to side equals.
The cone tip is of a split structure, and a permeable stone is arranged in the middle of the cone tip.
The utility model has the advantages that:
the utility model provides a static parameter sounding probe, because the one end of the measurement body and the side section of thick bamboo fixed connection that rubs, make the side frictional resistance that the side section of thick bamboo received can transmit to the measurement body, because the other end and the awl point fixed connection of the measurement body, make the awl point resistance that the awl point received can transmit to the measurement body, because middle part and the base fixed connection of the measurement body, the deformation volume that the side frictional resistance leads to is between the one end to the middle part of the measurement body, the deformation volume that the awl point resistance leads to is between the other end to the middle part of the measurement body, make side frictional resistance and awl point resistance can independently measure, each other does not influence. The measuring of the side friction resistance of the low range and the cone tip resistance of the high range can be completed through one measuring body, the number of parts is reduced while the measurement of two ranges of one part is realized, the assembly efficiency and the assembly precision are improved, the sealing position is reduced, the sealing performance and the stability are ensured, and the accuracy of the measuring result is improved.
Drawings
Fig. 1 is a schematic view of a static parameter sounding probe according to an embodiment of the present invention;
fig. 2 is a schematic view of a measuring body of a static parameter sounding probe according to an embodiment of the present invention;
fig. 3 is a schematic view of a static parameter sounding probe according to an embodiment of the present invention;
fig. 4 is a partial schematic view of fig. 3.
In the figure:
1. a side rubbing cylinder;
2. a conical tip; 21. water permeable holes; 22. a first portion; 23. a second portion;
3. a base; 31. a support portion; 32. an extension portion;
4. a measuring body; 41. a first support; 42. a second support; 43. a boss portion; 44. a first threaded portion; 45. a through hole; 46. a second threaded portion; 47. a mounting cavity;
5. a pressure sensor;
6. a watertight plug;
7. a permeable stone;
8. and (4) a baffle ring.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
Example one
Referring to fig. 1 and 2, the embodiment of the utility model provides a static parameter sounding probe, including the side a section of thick bamboo 1 of rubbing, set up in the awl point 2 of a section of thick bamboo 1 one end of rubbing of side and set up in the base 3 of a section of thick bamboo 1 other end of rubbing of side, still including measuring body 4, measure body 4 and be located a section of thick bamboo 1 of rubbing of side, measure the one end of body 4 and rub a section of thick bamboo 1 fixed connection with the side, the other end and 2 fixed connection of awl point, measure the middle part and 3 fixed connection of base of body 4, can obtain side friction resistance and awl point resistance alone through the deformation volume of measuring body 4.
Because the one end of the measuring body 4 and the side tube 1 fixed connection that rubs, make the side friction resistance that the side tube 1 received can transmit to the measuring body 4, because the other end and the 2 fixed connection of awl point of the measuring body 4, make the awl point resistance that the awl point 2 received can transmit to the measuring body 4, because the middle part and the 3 fixed connection of base of the measuring body 4, the deformation volume that the side friction resistance leads to is between the one end of the measuring body 4 to the middle part, the deformation volume that the awl point resistance leads to is between the other end of the measuring body 4 to the middle part, make the side friction resistance and the awl point resistance can independently measure, each other does not influence. The measurement of the side friction resistance of the low range and the cone tip resistance of the high range can be completed through one measuring body 4, the number of parts is reduced while the measurement of two ranges of one part is realized, the assembly efficiency and the assembly precision are improved, the sealing position is reduced, the sealing performance and the stability are ensured, and the accuracy of the measurement result is improved. The low-range side friction resistance means that the smaller side friction resistance can be measured; the cone tip resistance of a high range means that a larger cone tip resistance can be measured.
The measuring body 4 comprises a first supporting body 41 and a second supporting body 42 which are integrally formed, the joint of the first supporting body 41 and the second supporting body 42 is fixedly connected with the base 3, a first strain gauge is arranged on the first supporting body 41, and a second strain gauge is arranged on the second supporting body 42. The side friction resistance that the cylinder 1 received that rubs on the side can transmit to first supporter 41 for first foil gage produces the signal of telecommunication, and the awl point resistance that awl point 2 received can transmit to second supporter 42 on, makes the second foil gage produce the signal of telecommunication. Although the first supporting body 41 and the second supporting body 42 are integrally formed, since the joint of the first supporting body 41 and the second supporting body 42 is fixedly connected with the base 3, the deformation of the first supporting body 41 and the deformation of the second supporting body 42 are not affected by each other.
Here, the number of the first strain gauge and the second strain gauge is not limited. In the present embodiment, the first strain gauge and the second strain gauge are both 350 ohm temperature compensation strain gauges, 8 first strain gauges are symmetrically arranged on the first support body 41, and 8 second strain gauges are symmetrically arranged on the second support body 42. The second strain gauge is arranged in a full-bridge mode.
One end of the measuring body 4 is provided with a convex part 43 on the outer wall of the measuring body 4, and the convex part 43 is fixedly connected with the side friction cylinder 1. The main function of the protrusion 43 is to transmit the side friction force applied to the side friction cylinder 1 to the measuring body 4, the side friction force applied to the side friction cylinder 1 pulls the measuring body 4 by the protrusion to generate elastic deformation, and the side friction force can be obtained by the deformation amount of the measuring body 4. Specifically, the protruding portion 43 is disposed at an end of the first supporting body 41 away from the second supporting body 42, and the remaining portion of the first supporting body 41, except the protruding portion 43, is spaced from the inner wall of the side friction cylinder 1, so as to ensure the accuracy of force transmission. The inner wall of the side friction cylinder 1 is provided with a step, and the convex part 43 is fixed at the step.
A sealing ring is arranged between the measuring body 4 and the side friction cylinder 1 for sealing and water proofing. Specifically, the seal ring is disposed on an end of the outer wall of the measuring body 4 away from the boss 43.
The measuring body 4 is hollow inside to form an accommodating space, a first threaded part 44 is arranged on the inner wall of the middle part of the measuring body 4, and the base 3 is fixedly connected with the first threaded part 44. The first thread part 44 is arranged in a position, so that stress of the measuring body 4 positioned on two sides of the first thread part 44 can be transmitted to the probe rod through the base 3, namely, stress of the first support body 41 can be transmitted to the probe rod through the base 3, stress of the second support body 42 can be transmitted to the probe rod through the base 3, and force transmission processes of the first support body 41 and the second support body 42 are not affected by each other.
The base 3 comprises a supporting portion 31 and an extending portion 32, the supporting portion 31 is connected with the side friction cylinder 1, and the extending portion 32 extends into the accommodating space and is fixedly connected with the first threaded portion 44. A sealing ring is arranged between the supporting part 31 and the side friction cylinder 1 and is used for preventing external pressure and pore water from entering the inner cavity of the sounding probe. The extension 32 is arranged to enable the base 3 to be connected with the middle part of the measuring body 4, so that the side resistance and the cone tip resistance can be measured independently.
One end of the measuring body 4 is provided with a second thread part 46 on the inner wall, and the conical tip 2 is fixedly connected with the second thread part 46. The cone tip resistance force applied to the cone tip 2 is directly transmitted to the second supporting body 42 of the measuring body 4, so that the second strain gauge generates a corresponding electrical signal.
An installation cavity 47 is formed at the end part of the accommodating space, a pressure sensor 5 is arranged in the installation cavity 47, and the pressure sensor 5 and the conical tip 2 are arranged at intervals. The pressure sensor 5 and the mounting cavity 47 can be connected by screw threads. The pressure sensor 5 is used to measure the pore water pressure. A sealing ring is arranged between the pressure sensor 5 and the measuring body 4. Specifically, the second threaded portion 46 is disposed within the mounting cavity 47. Of course, the water in the pores also acts on the surface of the measuring body 4 contacting the conical tip 2, when the resistance of the conical tip is calculated, the resistance value obtained by the electric signal output by the deformation of the second strain gauge includes both the resistance value of the conical tip and the pore water pressure acting on the measuring body 4, the pore water pressure acting on the measuring body 4 can be calculated according to the contact area of the measuring body 4 and the water, and the description is omitted.
In order to prevent the pressure sensor 5 from falling off, a clamping groove is formed in the edge of the mounting cavity 47 and used for mounting a clamping ring to fix the pressure sensor 5. In this embodiment, the pressure sensor 5 uses a single crystal silicon strain gauge and the inside is filled with oil as a pressure carrier, which has reliable measurement stability and good temperature compensation linearity.
One end of the base 3, which is far away from the measuring body 4, is provided with a watertight plug 6, and the watertight plug 6 is in threaded connection with the base 3, so that the sealing property is ensured. The base 3 is provided with a center hole for penetrating a cable, one end of the cable is connected with the watertight plug 6, and the other end of the cable is connected with the first strain gauge and the second strain gauge. The cable adopts 8 core structures. Wherein 2 the core is for supplying power, 2 the core is connected with second foil gage, 2 the core is connected with first foil gage, 2 the core is connected with pressure sensor 5.
The outer wall of the measuring body 4 is provided with a through hole 45 communicated with the accommodating space, and a lead on the measuring body 4 is led to the accommodating space through the through hole 45, so that the cable is connected with a cable penetrating through the base 3.
The end part of the cone tip 2 is provided with a permeable stone 7 which can be used forCapable of transmitting pore water pressure to the pressure sensor 5 and on the other hand preventing fine-grained sediment from entering the measuring membrane of the pressure sensor 5, in the present embodiment, the permeable stone 7 has a designed permeability coefficient of 1-5 × 10-5cm/s, and the osmotic pressure resistance is 1 atmosphere. In order to ensure the strength and flexibility of the permeable stone 7, the permeable stone 7 is made of sintered pp materials and the permeability of the permeable stone 7 is controlled by controlling the porosity.
The position that just is going to permeable stone 7 on awl point 2 has seted up permeable hole 21 for permeable hole 21 link up with the installation cavity 47 of placing pressure sensor 5, and the pressure of pore water can transmit to pressure sensor 5 through permeable stone 7 and permeable hole 21.
In this embodiment, the permeable stone 7 is disposed at the maximum interface of the cone tip 2, and the outer diameter of the permeable stone 7 is equal to the outer diameter of the side grinding cylinder 1.
A baffle ring 8 is arranged between the permeable stone 7 and the measuring body 4, so that the permeable stone 7 is convenient to fix.
Example two
Fig. 3 and 4 show a second embodiment, wherein the same or corresponding parts as the first embodiment are provided with the same reference numerals as the first embodiment. For the sake of simplicity, only the differences between the second embodiment and the first embodiment will be described. The difference is that the cone tip 2 is a split structure, and the middle part of the cone tip 2 is provided with a permeable stone 7. The mounting and dismounting of the permeable stone 7 are convenient.
The cone tip 2 comprises a first part 22 and a second part 23 which are detachably connected, the first part 22 is connected with the measuring body 4, a step-shaped boss is arranged on the first part 22, and the permeable stone 7 is in a circular truncated cone shape and can be sleeved on the boss. The second portion 23 is threadedly mounted to the first portion 22.
The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a static parameter sounding probe, including the side rub a section of thick bamboo (1), set up in the awl point (2) of a section of thick bamboo (1) one end is rubbed to the side and set up in base (3) of a section of thick bamboo (1) other end is rubbed to the side, its characterized in that still includes:
the measuring body (4) is located in the side rubbing barrel (1), the one end of the measuring body (4) with the side rubbing barrel (1) fixed connection, the other end of the measuring body (4) with awl point (2) fixed connection, the middle part of the measuring body (4) with base (3) fixed connection, through the deformation amount of the measuring body (4) can obtain side friction resistance and awl point resistance alone.
2. The contact probe for static parameters according to claim 1, characterized in that the inside of the measuring body (4) is hollow to form a containing space, a first thread part (44) is arranged on the inner wall of the middle part of the measuring body (4), and the base (3) is fixedly connected with the first thread part (44).
3. The statics parameter sounding probe according to claim 2, characterized in that said base (3) comprises a support portion (31) and an extension portion (32), said support portion (31) being connected to said side friction cylinder (1), said extension portion (32) extending into said housing space and being fixedly connected to said threaded portion.
4. The probe for penetration of static parameters according to claim 2, characterized in that one end of the measuring body (4) is provided with a second threaded portion (46) on the inner wall, the cone tip (2) being fixedly connected with the second threaded portion (46).
5. The static parameter sounding probe according to claim 4, characterized in that a mounting cavity (47) is formed at the end of the accommodating space, a pressure sensor (5) is arranged in the mounting cavity (47), and the pressure sensor (5) and the cone tip (2) are arranged at intervals.
6. The sounding probe for static parameters according to claim 2, characterized in that the outer wall of the measuring body (4) is provided with a through hole (45) communicating with the housing space.
7. The probe for sounding static parameters according to claim 1, characterized in that one end of the measuring body (4) is provided with a protruding part (43) on the outer wall of the measuring body (4), the protruding part (43) being fixedly connected with the side friction cylinder (1).
8. The contact probe for static parameters according to claim 1, characterized in that the measuring body (4) comprises a first supporting body (41) and a second supporting body (42) which are integrally formed, the joint of the first supporting body (41) and the second supporting body (42) is fixedly connected with the base (3), the first supporting body (41) is provided with a first strain gauge, and the second supporting body (42) is provided with a second strain gauge.
9. The statics parameter penetration probe according to any one of claims 1-8, wherein the end of the cone tip (2) is provided with a water permeable stone (7), the outer diameter of the stone (7) being equal to the outer diameter of the side friction cylinder (1).
10. The static parameter sounding probe according to any one of claims 1-8, characterized in that the cone tip (2) is a split structure, and a permeable stone (7) is arranged in the middle of the cone tip (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921788852.6U CN211143037U (en) | 2019-10-23 | 2019-10-23 | Static parameter sounding probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921788852.6U CN211143037U (en) | 2019-10-23 | 2019-10-23 | Static parameter sounding probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211143037U true CN211143037U (en) | 2020-07-31 |
Family
ID=71770407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921788852.6U Active CN211143037U (en) | 2019-10-23 | 2019-10-23 | Static parameter sounding probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211143037U (en) |
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2019
- 2019-10-23 CN CN201921788852.6U patent/CN211143037U/en active Active
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