CN211086301U

CN211086301U - Portable penetration resistance appearance

Info

Publication number: CN211086301U
Application number: CN201921823350.2U
Authority: CN
Inventors: 张民生; 马昆; 张士泓; 刘家和; 朱龙飞; 罗珺珺
Original assignee: Ocean University of China
Current assignee: Ocean University of China
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2020-07-24
Anticipated expiration: 2029-10-28

Abstract

The utility model discloses a portable injection resistance appearance relates to the soil body and detects technical field. The portable penetration resistance instrument comprises a probe rod, a probe, a data acquisition device and a penetration handle. The probe is arranged at one end of the probe rod and is detachably connected with the probe rod, and a force measuring sensor is arranged in the probe. The injection handle is arranged on the probe rod. The data acquisition device is arranged on the probe rod and comprises a data acquisition module and a battery, the data acquisition module is electrically connected with the force transducer, and the data acquisition module can be in wireless connection with the mobile terminal. The portable penetration resistance instrument has the advantages of simple structure, convenient assembly and portability. In addition, wireless connection with the mobile terminal can be achieved, collected data are fed back to the mobile terminal in real time, real-time observation of operators is facilitated, information is accurate, and processing is rapid and efficient.

Description

Portable penetration resistance appearance

Technical Field

The utility model relates to a soil body detects technical field, especially relates to a portable injection resistance appearance.

Background

In the exploration of building and geotechnical engineering, the penetration resistance instrument can obtain various physical and mechanical indexes such as compactness, foundation bearing capacity and the like of relevant soil bodies. One type of injection testing equipment used for the existing soil investigation is that acquired data needs to be transmitted to a display terminal through an external lead, and the arrangement of the lead enables the injection testing equipment to be large in size and inconvenient to carry and store; the other type is that the acquired data is stored in a storage card, after the test is completed, the storage card is taken to data processing equipment for data processing, the operation is complex, time and labor are wasted, the acquired data cannot be displayed in real time, and the observation of operators is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a portable injection resistance appearance to it is complicated to solve the injection resistance device structure, and is bulky, carries inconvenience and operates hard problem consuming time, can obtain the injection data in real time, thereby the high efficiency obtains the physical mechanical properties of the soil body.

To achieve the purpose, the technical proposal adopted by the utility model is that:

a portable penetration resistance meter, comprising:

a probe rod;

the probe is arranged at one end of the probe rod, the probe is detachably connected with the probe rod, and a force measuring sensor is arranged in the probe;

the injection handle is arranged on the probe rod;

the data acquisition device is arranged on the probe rod, the data acquisition device 1 comprises a data acquisition module and a battery, the data acquisition module is electrically connected with the force transducer, and the data acquisition module can be in wireless connection with the mobile terminal.

Optionally, the probe comprises a conical tip and a shell, one end of the shell is connected with the conical tip, the other end of the shell is connected with the probe rod, and the load cell is arranged in the shell and connected with the end of the conical tip.

Optionally, the inside of shell is provided with the holding chamber, the both ends in holding chamber all are equipped with the opening, force cell sensor is located the holding intracavity.

Optionally, the cone tip and the load cell are threadably connected.

Optionally, the conical tip is in threaded connection with the outer shell, and a sealing ring is arranged at the connection position of the conical tip and the outer shell.

Optionally, the sharp angle of the conical tip is 60 °.

Optionally, the force measuring sensor is in threaded connection with the accommodating cavity, and a sealant is arranged in the accommodating cavity.

Optionally, the portable penetration resistance meter further comprises a wire, a central hole is formed in the probe rod, the wire is located in the central hole, and two ends of the wire are respectively connected with the data acquisition device and the force measuring sensor.

Optionally, the portable penetration resistance instrument further comprises a fixing piece, the fixing piece is connected with the probe rod, and the data acquisition device is arranged in the fixing piece.

Optionally, the portable penetration resistance meter further comprises an optical ranging sensor, the optical ranging sensor is arranged on the fixing piece, and the optical ranging sensor is electrically connected with the data acquisition module.

The utility model has the advantages that:

the utility model provides a portable injection resistance appearance, including probe rod, probe, data acquisition device and injection handle. The probe is arranged at one end of the probe rod and is detachably connected with the probe rod, and a force measuring sensor is arranged in the probe. The injection handle is arranged on the probe rod. The data acquisition device is arranged on the probe rod and comprises a data acquisition module and a battery, the data acquisition module is electrically connected with the force transducer, and the data acquisition module can be in wireless connection with the mobile terminal. The portable penetration resistance instrument has the advantages of simple structure, convenient assembly and portability. In addition, wireless connection with the mobile terminal can be achieved, collected data are fed back to the mobile terminal in real time, real-time observation of operators is facilitated, information is accurate, and processing is rapid and efficient.

Drawings

FIG. 1 is a front view of a portable penetration resistance gauge provided by an embodiment of the present invention;

fig. 2 is a cross-sectional view of a portable penetration resistance gauge provided by an embodiment of the present invention.

In the figure:

1. a data acquisition device;

2. a probe; 21. a housing; 22. a conical tip;

3. a probe rod; 31. a central bore;

4. a fixing member;

5. the handle is penetrated;

6. a force sensor;

7. an optical ranging sensor;

8. and (4) conducting wires.

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.

The utility model provides a portable injection resistance appearance, the injection resistance and the injection displacement of the multiple soil body of measurable quantity to obtain the physical mechanical properties of the soil body.

As shown in FIGS. 1 and 2, the portable penetration resistance tester comprises a probe 3, a probe 2, a load cell 6, a data acquisition device 1 and a penetration handle 5. Specifically, the load cell 6 is disposed inside the probe 2, the probe 2 is disposed at one end of the probe rod 3, and the probe 2 is detachably connected to the probe rod 3. The penetration handle 5 is provided on the probe rod 3. The data acquisition device 1 is arranged on the probe rod 3. In the present embodiment, the penetration handle 5 is disposed at an end of the probe 3 away from the probe 2. The data acquisition device 1 is clamped between the penetration handle 5 and the probe rod 3, and of course, the data acquisition device 1 may also be disposed at other positions on the probe rod 3, for example, at a middle position of the probe rod 3, which is not described herein again. In this embodiment, the probe rod 3 is connected with the probe 2 by screw threads, so that the disassembly is convenient. Of course, the probe rod 3 and the probe 2 may be connected in other manners, such as an integral connection, which is not described herein. The portable penetration resistance instrument has the advantages of simple structure, convenient disassembly and convenient carrying.

Specifically, data acquisition device 1 includes data acquisition module and battery, and data acquisition module is connected with force cell 6 electricity to data acquisition module can with mobile terminal wireless connection, and the battery provides electric power for data acquisition device 1. The data acquisition device 1 can display acquired data on the mobile terminal in real time, and is real-time, convenient and quick. In this embodiment, the mobile terminal adopts portable and movable electronic equipment such as a mobile phone and a tablet personal computer, so that an operator can conveniently check the electronic equipment in real time, and the working efficiency is improved.

Specifically, the probe 2 includes a housing 21 and a conical tip 22, one end of the housing 21 is connected to the conical tip 22, the other end of the housing 21 is connected to the probe rod 3, and the load cell 6 is disposed inside the housing 21 and connected to an end of the conical tip 22. During the movement of the probe 2, the conical tip 22 and the shell 21 are subjected to the resistance from the soil. The resistance is transmitted to the force measuring sensor 6 connected with the conical tip 22, the force measuring sensor 6 automatically acquires corresponding signals and transmits the signals to the data acquisition module, and the data acquisition module automatically calculates and wirelessly transmits corresponding data to the mobile terminal.

More specifically, the inside of the housing 21 is provided with a housing chamber, both ends of which are provided with openings, and the load cell 6 is located in the housing chamber. The housing 21 protects the load cell 6.

Optionally, the load cell 6 is in threaded connection with the receiving cavity and a sealant is provided in the receiving cavity to seal the interior of the receiving cavity. The threaded connection mode enables the force measuring sensor 6 to be fixed stably and be convenient to detach. Of course, other connection modes can be selected, and are not described in detail herein.

Further, the cone tip 22 is screwed to the load cell 6, and the cone tip 22 is screwed to the housing 21. In this embodiment, the cone tip 22 includes a cone and a boss. Specifically, the end face of the boss is provided with an internal threaded hole inward, and the load cell 6 is provided with an external thread matched with the internal threaded hole, so that the conical tip 22 is in threaded connection with the load cell 6 to facilitate disassembly. In addition, the boss is provided with the external screw thread all around, is provided with the internal thread with the external screw thread matched with of boss on the shell 21, and the internal thread realizes the fixed connection of awl point 22 and shell 21 with the external screw thread cooperation.

In the embodiment, the force sensor 6 is preferably an L H pull pressure sensor, the L H pull pressure sensor is located in the accommodating cavity, specifically, screws are arranged at two ends of the L H pull pressure sensor and are used for connecting, fixing and bearing, the screw at one end of the L H pull pressure sensor is in threaded connection with the end of the boss, and the screw at the other end of the L H pull pressure sensor is in threaded connection with the shell 21. in the data acquisition process, in the soil motion process of the probe 2, the conical tip 22 and the shell 21 both bear resistance from the soil, the resistance is transmitted to the L H pull pressure sensor in the probe 2, so that a resistance strain gauge of the L H pull pressure sensor is deformed, the resistance value of the resistance strain gauge is changed, the resistance value difference is converted into an electric signal and is transmitted to the data acquisition module, the electric signal is processed by the data acquisition module to obtain relevant data such as penetration resistance, and the relevant data is finally wirelessly transmitted to the mobile.

Further, a seal ring is provided at the junction of the conical tip 22 and the housing 21 to prevent dust and conductive liquid from entering the inside of the probe 2. In this embodiment, an annular groove is formed on the boss of the conical tip 22, the annular sealing ring is sleeved in the annular groove, and when the annular sealing ring is installed, the annular sealing ring is extruded to generate elastic deformation to a certain extent, so that the outer circumference of the annular sealing ring is seamlessly attached to the inner surface of the housing 21. The sealing ring is arranged to prevent foreign objects from entering the interior of the housing 21 and to avoid interfering with the operation of the load cell 6.

Alternatively, the sharp angle of the conical tip 22 is 60 °. The cone tip 22 can effectively penetrate into the soil body, is widely used in a static Cone Penetration Test (CPT), and is convenient to replace. Of course, other taper angles may be selected for the tip 22.

Further, this portable penetration resistance appearance still includes wire 8, and the inside of probe rod 3 sets up centre bore 31, and wire 8 is located centre bore 31, and data acquisition device 1 and force cell 6 are connected respectively to the both ends of wire 8. In this embodiment, one end of the accommodating cavity is open and connected with the probe rod 3, and the other end is open and connected with the conical tip 22. One end of the force measuring sensor 6 positioned in the accommodating cavity is connected with the lead 8, and the lead 8 is connected with the data acquisition device 1 through the opening of the accommodating cavity and the central hole 31, so that data acquisition and transmission are realized. The data acquisition module is in wireless connection with the mobile terminal, so that the acquired and stored penetration resistance is transmitted to the mobile terminal, and the mobile terminal displays the penetration resistance in real time.

Optionally, the portable penetration resistance tester further comprises a fixing member 4, the fixing member 4 is connected with the probe rod 3, and the data acquisition device 1 is arranged inside the fixing member 4. The data acquisition device 1 is arranged in the fixing part 4, and is safe and firm. In this embodiment, the fixing member 4 is a square frame. The fixing part 4 is simple and small in structure and convenient to use and install. In addition, the fixing member 4 may be a housing or a frame of other shapes, and may be detachably disposed on the floor stand.

Alternatively, the penetration handle 5 of the portable penetration resistance instrument is provided on the fixing member 4. When in use, the penetration handle 5 is pressed down to lead the probe rod 3 to be vertically inserted into the soil body downwards. When the portable penetrometer is gradually inserted into the soil body, the operator can use the insertion handle 5 to exert force better, so that the use is labor-saving and the portable penetrometer is convenient to carry. In this embodiment, the penetration handle 5 is fixedly connected to the fixing member 4, and the fixing member 4 is located between the penetration handle 5 and the probe rod 3. Of course, the position of the penetration handle 5 can also be arranged at other parts of the fixing member 4, such as the penetration handle 5 is arranged between the fixing member 4 and the probe rod 3.

Optionally, the portable penetration resistance apparatus further comprises an optical ranging sensor 7, the optical ranging sensor 7 is arranged on the fixing member 4, and the optical ranging sensor 7 is electrically connected with the data acquisition module. In the injection resistance measurement process, the optical distance measuring sensor 7 emits laser and simultaneously receives laser reflected by the surface layer of the soil body, data information of injection displacement is transmitted to the data acquisition module, the data acquisition module is wirelessly transmitted to the mobile terminal, and the data information and the injection resistance can be synchronously displayed on the mobile terminal in real time.

In this embodiment, the fixing member 4 is provided with an opening, the optical distance measuring sensor 7 is disposed in the fixing member 4, the laser emitting and receiving end faces the opening, and the probe rod 3 does not block the opening, so that the laser can be emitted to the soil body along a straight line.

The data acquisition device 1 of the portable penetration resistance instrument further comprises a data acquisition module switch, and the data acquisition module switch controls the execution and the termination of an acquisition task. Before the use, press the data acquisition module switch, the data acquisition module is triggered. When the probe rod 3 gradually enters the soil body, the data acquisition module automatically acquires, records and analyzes data test information from the force measuring sensor 6 and the optical distance measuring sensor 7 and transmits the data test information to the mobile terminal. And the penetration resistance and the penetration displacement are displayed on a display screen of the mobile terminal in real time.

The working process and the principle of the penetration resistance meter are as follows:

firstly, the hand is held with the penetration handle 5, the data acquisition module switch is pressed, the data acquisition module is triggered to perform data acquisition work, and the penetration resistance acquired at the moment is 0.

Then, the probe 2 of the portable penetration resistance meter is gradually inserted into the soil body by holding the penetration handle 5. On one hand, when the probe 2 contacts the soil body, the force measuring sensor 6 transmits the detected penetration resistance to the data acquisition module through the lead 8; on the other hand, the optical distance measuring sensor 7 emits laser and receives the laser reflected by the surface of the soil body, and transmits the data information of penetration displacement to the data acquisition module.

Finally, the penetration resistance and the penetration displacement are displayed on the mobile terminal in real time, and the physical and mechanical properties related to the soil body are obtained through data processing and analysis.

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

1. A portable penetration resistance gauge, comprising:

a probe rod (3);

the probe (2) is arranged at one end of the probe rod (3), the probe (2) is detachably connected with the probe rod (3), and a force measuring sensor (6) is arranged in the probe (2);

the injection handle (5) is arranged on the probe rod (3);

the data acquisition device (1) is arranged on the probe rod (3), the data acquisition device (1) comprises a data acquisition module and a battery, the data acquisition module is electrically connected with the force transducer (6), and the data acquisition module can be in wireless connection with the mobile terminal.

2. Portable penetration resistance instrument according to claim 1, wherein said probe (2) comprises a conical tip (22) and a housing (21), one end of said housing (21) being connected to said conical tip (22), the other end of said housing (21) being connected to said probe rod (3), said load cell (6) being arranged inside said housing (21) and being connected to the end of said conical tip (22).

3. The portable penetration resistance gauge according to claim 2, wherein a housing cavity is provided inside the housing (21), both ends of the housing cavity are provided with openings, and the load cell (6) is located in the housing cavity.

4. Portable penetration resistance gauge according to claim 2, wherein said conical tip (22) and said load cell (6) are screw-connected.

5. The portable penetration resistance instrument according to claim 2, wherein the conical tip (22) and the outer shell (21) are in threaded connection, and a sealing ring is arranged at the connection of the conical tip (22) and the outer shell (21).

6. Portable penetration resistance instrument according to claim 2, wherein the pointed angle of the conical tip (22) is 60 °.

7. The portable penetration resistance gauge of claim 3, wherein the load cell (6) is threadably connected to the receiving cavity, and a sealant is disposed in the receiving cavity.

8. The portable penetration resistance gauge according to any one of claims 1-7, further comprising a lead (8), wherein a central hole (31) is formed inside the probe rod (3), the lead (8) is located in the central hole (31), and two ends of the lead (8) are respectively connected with the data acquisition device (1) and the load cell (6).

9. Portable penetration resistance instrument according to any one of claims 1 to 7, further comprising a fixture (4), wherein said fixture (4) is connected to said probe (3), and said data acquisition device (1) is disposed inside said fixture (4).

10. The portable penetration resistance gauge of claim 9, further comprising an optical ranging sensor (7), wherein the optical ranging sensor (7) is disposed on the fixture (4), and wherein the optical ranging sensor (7) is electrically connected to the data acquisition module.