CN216075092U - A staple for accelerometer of place test - Google Patents
A staple for accelerometer of place test Download PDFInfo
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- CN216075092U CN216075092U CN202122018040.7U CN202122018040U CN216075092U CN 216075092 U CN216075092 U CN 216075092U CN 202122018040 U CN202122018040 U CN 202122018040U CN 216075092 U CN216075092 U CN 216075092U
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- cross
- plate
- accelerometer
- top plate
- soil nail
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Abstract
The utility model provides a fixed soil nail of an accelerometer for field testing, which comprises a top plate and a cross-shaped cross plate with a cross-shaped cross section, wherein the top plate is arranged on the top of the cross-shaped cross plate, the cross-shaped cross plate is composed of four vertical plates with the same width, the bottoms of the four vertical plates are provided with tips, the tips are inserted into a soil body, and the surface of the top plate is fixed with the accelerometer through a screw or an adhesive; compared with the prior art, the utility model has the advantages of increasing the embedding length, overcoming the defect of unstable fixation of discrete particles on the surface of a soil body, and obtaining better fixation rigidity so as to obtain reliable test data.
Description
Technical Field
The utility model belongs to the field of field soil testing, and particularly relates to a fixed soil nail of an accelerometer for field testing.
Background
The following 6 methods are generally available in the prior art using fixed accelerometers:
1. and (3) fixing the screws: also called bolt fixing, the bottom of the acceleration sensor is generally provided with a bolt, and a hole needs to be drilled on a vibrating body to fix the sensor. The surface of the acceleration sensor is preferably fixed by applying silicone grease to the surface to be finished and tightening the surface with a predetermined torque, and the performance of the acceleration sensor can be maximized. If silicone grease is not used, the contact resonance frequency is low when the measurement surface is rough.
2. Fixing an insulating bolt: the non-insulated acceleration sensor is affected by noise from the substrate, and the acceleration sensor is electrically insulated from the object to be measured by the insulating bolt, so that the influence of noise is small, and the characteristics similar to those in the case of screw fixation can be obtained under appropriate mounting conditions.
3. Magnet fixing: also called magnetic chuck fixation, when the object to be tested is a metal capable of absorbing magnetism, the magnet chuck can be used as a simple fixing method for preliminary detection, and if the installation surface condition is good, the performance close to that of the fixation of the silicone-coated screw can be obtained.
4. A probe rod: the wave guide rod is also called as a wave guide rod, and can be used in narrow places which can not be fixed by screws or places which can not be provided with an acceleration sensor, a probe rod, such as a stainless steel probe rod with the length of 100mm, can detect the frequency range below 1kHz, and is very practical for low-frequency vibration detection.
5. Adhesive fixation: also called glue fixation, when the finish-machined contact surface is fixed by an adhesive, if the bonding conditions are proper, the performance similar to that of screw fixation can be obtained.
6. Fixing the adhesive tape: when the vibration frequency is low and the vibration amplitude is small, the method is used as a simple method for temporarily fixing the sensor. When the adhesion condition is satisfied, about 10kHz can be detected.
Vibrations in the construction environment are generated by various sources, such as industrial machinery, road and rail traffic. These vibrations may cause nuisance to people or malfunction of sensitive equipment. Therefore, a great deal of research is needed on the subject, wherein experimental research is one of the main methods, vibration signals are obtained by arranging accelerometers on the field, and the data function is taken as the basis of intensive research. From the requirement of obtaining a robust acceleration signal, accelerometers generally cannot be placed directly on the ground, i.e. require a fixture. Therefore, a novel accelerometer fixing device is provided: a novel cross-shaped soil nail.
Disclosure of Invention
The utility model provides a soil fixing nail for an accelerometer for field testing, which is realized by adopting the following technical scheme:
the utility model provides a staple for accelerometer of place test, includes the cross board of roof and cross section, its characterized in that: the top plate is installed on the top of the cross plate, the cross plate is composed of four vertical plates with the same width, the bottoms of the four vertical plates are arranged to be pointed ends, the pointed ends are inserted into a soil body, and the accelerometer is fixed on the surface of the top plate through a screw or an adhesive.
The fixed soil nail is made of wood, and the top plate and the cross plate with the cross-shaped cross section are spliced through wood glue; the fixed soil nail is a PVC soil nail, and the top plate and the cross plate with the cross section are of a 3D printing integrated structure; the fixed soil nail is a steel soil nail, and the top plate is connected with the cross plate with the cross section in a welding mode.
Compared with the prior art, the utility model has the beneficial effects that:
1. the embedding length is increased, the problem that discrete particles on the surface of a soil body are not fixed stably is solved, and better fixing rigidity is obtained, so that reliable test data can be obtained;
2. the embedded part should have greater rigidity;
3. the fixing device is not easy to wear and has durability;
4. the fixing device is convenient to carry.
Drawings
FIG. 1 is a flow chart of the use of the soil nail;
FIG. 2 is an elevational view of the earth nail;
FIG. 3 is a reverse view of the earth nail;
fig. 4 is a top view of the earth nail.
Detailed Description
The utility model relates to an accelerometer fixing soil nail for field test, which is further described in detail in the following with the accompanying drawings and the detailed description.
Aiming at the problems, firstly, the surface of the soil body may have pore granular particles which are not strongly connected with the lower soil body, thereby greatly weakening the fixing effect of the chemical agent; secondly, the surface of the soil body is generally non-smooth and horizontal, and the uneven shape of the soil body can limit the fixing effect.
The utility model provides a staple for accelerometer of place test, includes top plate 1 and crisscross cross board 2 of cross-shaped cross section, its characterized in that: the top plate 1 is installed on the top of a cross plate 2, the cross plate is composed of four vertical plates 3 with the same width, the bottoms of the four vertical plates are arranged to be pointed ends, the pointed ends are inserted into a soil body, and the accelerometer is fixed on the surface of the top plate through a screw or an adhesive.
The fixed soil nail is made of wood, and the top plate and the cross plate with the cross-shaped cross section are spliced through wood glue; the fixed soil nail is a PVC soil nail, and the top plate and the cross plate with the cross section are of a 3D printing integrated structure; the fixed soil nail is a steel soil nail, and the top plate is connected with the cross plate with the cross section in a welding mode.
The side of the cross plate is provided with a horizontal detection plate 4, the horizontal detection plate is connected through a bolt 5, and the bolt is connected to a vertical angle at the joint of the two vertical plates.
The length and width of the top plate are both 50mm, the thickness of the top plate is 10mm, the tip of the bottom of the top plate is 40mm, and the height of the horizontal detection plate is 50 mm; the cross-section size length width of cross board is 40mm, and cross board sets up with crossing central symmetry.
The specific implementation scheme is as follows:
1. manufacturing a soil nail: according to the size of the soil nail shown in the figure, according to the specific use environment and requirements, selecting proper materials to manufacture the soil nail, wherein: the wood-soil nails can be spliced by wood glue; the PVC soil nail can be printed in 3D; the steel-soil nail can be manufactured by a welding method.
2. And (3) measuring point positioning: firstly, determining the hole position according to a design drawing and a coordinate network point of a construction site.
3. Forming holes and nailing: for the steel soil nail, the steel soil nail can be hammered into the surface of the soil body, and for the PVC and wood soil nail, the steel soil nail can be firstly used for being hammered into the soil to form a hole, then the steel soil nail is pulled out, and then the PVC and wood soil nail is placed into the hole.
4. Fixing an instrument: on top of the soil peg, the accelerometer may be fixed by adhesive or screws.
5. The test was started: after the above procedures are completed, the relevant test work can be started.
Through setting up vertical roof and horizontal detection board, can test vertical acceleration and the acceleration of horizontal direction simultaneously.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any simple modification, equivalent change or modification made to the above embodiments according to the technical spirit of the present invention still falls within the scope of the technical solution of the present invention.
Claims (5)
1. The utility model provides a staple for accelerometer of place test, includes the cross board of roof and cross section, its characterized in that: the top plate is installed on the top of the cross plate, the cross plate is composed of four vertical plates with the same width, the bottoms of the four vertical plates are arranged to be pointed ends, the pointed ends are inserted into a soil body, and the accelerometer is fixed on the surface of the top plate through a screw or an adhesive.
2. The earth anchor of an accelerometer for field testing of claim 1, wherein: the fixed soil nail is made of wood, and the top plate and the cross-shaped cross plate with the cross-shaped cross section are spliced through wood glue.
3. The earth anchor of an accelerometer for field testing according to claim 1, wherein: the fixed soil nail is a PVC soil nail, and the top plate and the cross plate with the cross section are of a 3D printing integrated structure.
4. The earth anchor of an accelerometer for field testing according to claim 1, wherein: the fixed soil nail is a steel soil nail, and the top plate is connected with the cross plate with the cross section in a welding mode.
5. The earth-fixing nail for an accelerometer used for field test as claimed in claim 1, wherein a horizontal detection plate is arranged on the side of the cross plate, the horizontal detection plate is connected by a bolt, and the bolt is connected on the vertical angle at the joint of the two vertical plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122018040.7U CN216075092U (en) | 2021-08-26 | 2021-08-26 | A staple for accelerometer of place test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122018040.7U CN216075092U (en) | 2021-08-26 | 2021-08-26 | A staple for accelerometer of place test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216075092U true CN216075092U (en) | 2022-03-18 |
Family
ID=80672265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122018040.7U Active CN216075092U (en) | 2021-08-26 | 2021-08-26 | A staple for accelerometer of place test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216075092U (en) |
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2021
- 2021-08-26 CN CN202122018040.7U patent/CN216075092U/en active Active
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