CN212301922U

CN212301922U - Fixing device of Rayleigh surface wave detector

Info

Publication number: CN212301922U
Application number: CN202021390199.0U
Authority: CN
Inventors: 李竹静; 段彬; 贺文文; 张妮; 杨昕琪
Original assignee: Beijing Jiyoujia Test & Detection Technology Co ltd
Current assignee: Beijing Jiyoujia Test & Detection Technology Co ltd
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2021-01-05
Anticipated expiration: 2030-07-15

Abstract

The utility model discloses a fixing device of rayleigh surface wave detector, including the mounting bracket, set up in on the mounting bracket and with the mounting hole of rayleigh surface wave check point one-to-one and the fixed unit portion of corresponding the installation with each mounting hole, wherein: the fixed unit part comprises a mounting seat, a lifting adjusting part for adjusting the lifting of the detector along the height direction of the mounting seat, and a swing angle adjusting part for adjusting the swing of the detector relative to the central axis of the mounting seat to enable the detector to generate angular displacement, wherein the lifting adjusting part and the swing angle adjusting part are arranged at two ends of the mounting seat, and the lifting adjusting part is matched with the corresponding mounting hole; the swing angle adjusting part is connected with the corresponding detector until the detector is tightly abutted to the end face, far away from the lifting adjusting part, of the mounting seat. The utility model discloses a fixing device, at Rayleigh surface wave acquisition in-process, a plurality of wave detector mounting means are reliable, improve the detection precision of Rayleigh surface wave detector.

Description

Fixing device of Rayleigh surface wave detector

Technical Field

The utility model belongs to the technical field of municipal administration road bridge, concretely relates to fixing device of rayleigh surface wave detector.

Background

The Rayleigh surface wave detection method is used as a novel municipal road and bridge detection technology, is widely applied to engineering construction, road greening, traffic engineering, road and bridge detection and municipal road engineering design, and has the advantages of simple structure, low economic cost, no damage and the like. Rayleigh surface wave detection comprises a stable method of frequency domain observation and a transient method of time domain observation. Wherein, the transient method has the characteristics of portability, rapidness and high efficiency. When the wave detector is adopted to collect multi-channel transient surface wave data, firstly, a surface wave collecting and observing system, namely, a scheme of offset distance, track spacing, measuring line and arrangement and a collecting parameter and an excitation mode of equipment are determined through a field test, and then surface wave collecting work of a measuring point is started.

In the Rayleigh surface wave acquisition process, a plurality of detectors are arranged in a straight line, and all the detectors are required to be firmly and reliably arranged with the ground or the surface of an object to be detected. The detection precision of the Rayleigh surface wave detector is influenced by the arrangement distance of the detectors arranged in a row, the contact tightness with the ground, the integral movement of the detectors and other factors. In the detection process, how to arrange the installation mode of a plurality of detectors becomes an important guarantee for improving the detection precision of Rayleigh surface waves.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problem among the prior art, the utility model provides a fixing device of rayleigh surface wave detector aims at solving rayleigh surface wave collection in-process, and a plurality of detectors that ally oneself with row and set up influence the problem of the detection precision of rayleigh surface wave detector because of the mounting means is unreliable.

In order to achieve the above object, the utility model discloses a following technical scheme realizes:

the utility model provides a fixing device of rayleigh surface wave detector, includes the mounting bracket, set up in on the mounting bracket and with the mounting hole of rayleigh surface wave detection point one-to-one and the fixed unit portion of corresponding the installation with each mounting hole, wherein:

the fixed unit part comprises a mounting seat, a lifting adjusting part for adjusting the lifting of the detector along the height direction of the mounting seat, and a swing angle adjusting part for adjusting the swing of the detector relative to the central axis of the mounting seat to enable the detector to generate angular displacement, wherein the lifting adjusting part and the swing angle adjusting part are arranged at two ends of the mounting seat, and the lifting adjusting part is matched with the corresponding mounting hole; the swing angle adjusting part is connected with the corresponding detector until the detector is tightly abutted to the end face, far away from the lifting adjusting part, of the mounting seat.

Furthermore, the swing angle adjusting part comprises a mounting plate matched with the edge shape of the detector, and at least two adjusting rod assemblies matched with each other and used for adjusting the inclination angle of the mounting plate, wherein the adjusting rod assemblies are movably connected with the mounting base.

Further, the regulating rod subassembly includes that at least one carries out the main regulating part of pivot angle fine setting, at least one is used for fixing the supplementary regulating part of minimum distance between mounting panel and the mount pad, main regulating part including connect the first screw rod of mounting panel and mount pad and with first screw rod complex first fastener, supplementary regulating part including connect the second screw rod of mounting panel and mount pad and with second screw rod complex second fastener.

Further, the second screw rod includes the main shaft that runs through mounting panel and mount pad, arranges in sleeve post between mounting panel and the mount pad, sleeve post with the main shaft cooperation installation.

Further, the mounting plate comprises a half-moon-shaped mounting groove matched with the edge shape of the detector, and the detector is matched with the half-moon-shaped mounting groove and is fixed or adjusted in a swing angle range through the adjusting rod assembly.

Further, the mount comprises a mount main body and a rubber gasket arranged in the mount main body, wherein the rubber gasket is arranged opposite to the top of the detector.

Furthermore, the lifting adjusting part comprises a lifting main shaft penetrating through the mounting hole, a spring positioned between the lifting main shaft and the mounting seat and a third fastener for fixing the lifting adjusting part, and the third fastener and the spring are respectively arranged at two ends of the mounting hole.

Further, the mounting bracket includes two mounting posts that the interval was arranged, connect through first whippletree, the second whippletree that sets up along length direction between the mounting post, the mounting hole is located first whippletree, the second whippletree is located first whippletree top.

Further, the erection column is including being convenient for fixing device moving as a whole T shape handle with set up in the base of T shape handle bottom, the base includes the single-column base that one side set up and the double-column base that the opposite side set up.

Furthermore, all the mounting holes are uniformly arranged at intervals; the mounting base is made of plastic materials, and the mounting frame and the lifting adjusting portion are made of steel materials.

The utility model has the advantages as follows:

the utility model discloses a fixing device of rayleigh surface wave detector sets up the mounting hole with rayleigh surface wave check point one-to-one on the mounting bracket, every detector with correspond pendulum angle adjustment portion fixed mounting, pendulum angle adjustment portion carries out the pendulum angle regulation of adaptability to the detector according to the slope or the plane degree that wait to detect the face. Each detector is correspondingly arranged in the mounting hole through the fixing unit part and is fixed, and the plurality of detectors form a whole body, so that the whole body can move conveniently when in use; each detector is correspondingly installed with the installation hole, the distance between each detector cannot be changed due to the integral movement, each detector can still be firmly arranged after the fixing device moves, and the relative position between two adjacent detectors cannot be changed, so that the detection precision is improved, and the purpose of rapid and nondestructive detection can be achieved.

Drawings

Fig. 1 is an assembly view of the fixing device of the present invention;

fig. 2 is a schematic layout view of the mounting holes on the mounting rack of the present invention;

fig. 3 is a schematic structural view of the fixing unit of the present invention;

FIG. 4 is an enlarged schematic view of FIG. 3 at a;

FIG. 5 is a schematic view of the fixing device and the geophone according to the present invention;

FIG. 6 is a schematic view of FIG. 4 in the direction A;

fig. 7 is a schematic structural diagram of the mounting plate of the present invention;

fig. 8 is a schematic structural view of the mounting frame of the present invention;

FIG. 9 is a side view of FIG. 8;

FIG. 10 is a schematic view of the T-shaped handle of the dual post base of FIG. 8;

fig. 11 is a schematic view of the T-shaped handle of the single post base of fig. 8.

The reference numbers are as follows:

1. a mounting frame; 2. mounting holes; 3. a fixed unit part; 4. a mounting seat; 5. a swing angle adjusting part; 6. a lifting adjusting part; 10. a detector; 11. mounting a column; 12. a first bar; 13. a second bar; 41. a mount body; 42. a rubber gasket; 51. mounting a plate; 52. a main adjustment section; 53. an auxiliary adjusting part; 61. lifting the main shaft; 62. a spring; 110. a T-shaped handle; 111. a single-column base; 112. a double-column base; 510. a half-moon shaped mounting groove; 521. a first screw; 531. a second screw; 532. a main shaft; 533. a sleeve column.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 5, the utility model provides a fixing device of rayleigh surface wave detector, including mounting bracket 1, set up on mounting bracket 1 and with mounting hole 2 of rayleigh surface wave detection point one-to-one and with the fixed unit portion 3 of each mounting hole 2 corresponding installation, wherein:

the fixed unit part 3 comprises a mounting seat 4, a lifting adjusting part 6 for adjusting the lifting of the wave detector 10 along the height direction of the mounting seat 4, and a swing angle adjusting part 5 for adjusting the swing of the wave detector 10 relative to the central axis of the mounting seat 4 to enable the wave detector 10 to generate angular displacement, wherein the swing angle adjusting part 5 and the lifting adjusting part 6 are arranged at two ends of the mounting seat 4, and the lifting adjusting part 6 is matched with the corresponding mounting hole 2; the swing angle adjusting part 5 is connected with the corresponding wave detector 10 until the wave detector 10 is tightly abutted to the end face of the mounting seat 4 far away from the lifting adjusting part 6.

Specifically, the mounting bracket 1 is arranged along the length direction, the mounting holes 2 are arranged in a row along the length direction of the mounting bracket 1, and the mounting holes 2 correspond to the Rayleigh surface wave detection points one to one. Each detector 10 is correspondingly arranged in the mounting hole 2 through the fixing unit part 3 and fixed, and the plurality of detectors 10 form a whole body, so that the integral movement is convenient during use; each wave detector 10 is correspondingly installed with the installation hole 2, the distance between each wave detector 10 cannot be changed due to the whole movement, each wave detector 10 can still be firmly arranged after the fixing device moves, the relative position between two adjacent wave detectors 10 cannot be changed, and the detection precision is improved.

During installation, the height of the lifting adjusting part 6 is adjusted according to the relative position of the detector 10 and the detection ground, so that each detector 10 can be tightly attached to the surface to be detected, and the detection precision of each position point is improved. The detector 10 is connected to the tilt angle adjusting section 5 and is fixedly mounted while abutting against the end face of the mount 4. The swing angle adjusting part 5 can fixedly install the wave detector 10 on one hand; on the other hand, in the installation process of the detector 10, the fitting degree of the detector 10 and the surface to be detected is adjusted according to the slope or flatness adaptability of the ground to be detected of the detector 10, and the detection precision is further improved.

In engineering application, a plurality of fixing devices are arranged at the same time to detect Rayleigh surface waves. For example, three fixing devices are selected according to the detection range, and the depths are respectively selected to be 1.1m, 2.2m and 3.3 m; the arrangement of the plurality of fixing devices has the advantages that the size of each fixing device is simplified, and the fixing devices are convenient to move integrally during detection; a plurality of fixing device select different detection depth, gather the rayleigh face wave detection data under the different degree of depth, different operating modes, increase sample data's variety, improve aftertreatment analytic process's precision.

In this embodiment, as a further improvement of the above technical solution, the swing angle adjusting part 5 includes an installation plate 51 adapted to the edge shape of the geophone 10, and at least two adjusting rod assemblies mutually matched to adjust the inclination angle of the installation plate 51, and the adjusting rod assemblies are movably connected to the installation base 4.

Further, the adjusting rod assembly comprises at least one main adjusting part 52 for fine adjustment of the swing angle, and at least one auxiliary adjusting part 53 for fixing the minimum distance between the mounting plate 51 and the mounting seat 4, wherein the main adjusting part 52 comprises a first screw 521 for connecting the mounting plate 51 and the mounting seat 4 and a first fastener matched with the first screw 521, and the auxiliary adjusting part 53 comprises a second screw 531 for connecting the mounting plate 51 and the mounting seat 4 and a second fastener matched with the second screw 531.

Optionally, the first and second fasteners each comprise a washer and a nut. The adjusting lever assembly includes a main adjusting part 52 and an auxiliary adjusting part 53, simplifying the overall structure. Wherein, the first screw 521 is a long screw or a bolt. One end of the first screw 521 passes through the mounting plate 51 and is fastened by a nut and a washer, and the other end passes through the mounting seat 4 and is also fastened by a nut and a washer. The distance between the mounting plate 51 and the mounting base 4 of the first screw 521 is adjusted adaptively according to the size of the receiver 10.

It is noted that the auxiliary adjustment portion 53 is located at a distance between the mounting plate 51 and the mounting base 4 for defining a minimum size for accommodating the geophone 10. And the main adjusting part 52 is used for finely adjusting the offset angle of the detector 10 relative to the central axis of the mounting hole 2, namely the swing angle range of the angular displacement of the detector 10, so as to adapt to the surfaces to be detected with different slopes or planeness.

Of course, in other engineering applications, the distance that auxiliary adjustment portion 53 is located between mounting plate 51 and mounting base 4 is not limited to defining the minimum size to accommodate geophone 10. The engineer adjusts the main adjustment unit 52 and the auxiliary adjustment unit 53 simultaneously according to the detectors 10 of different sizes, but is not limited thereto.

In this embodiment, as a further improvement of the above technical solution, the second screw 531 includes a main shaft 532 penetrating through the mounting plate 51 and the mounting seat 4, and a sleeve column 533 disposed between the mounting plate 51 and the mounting seat 4, and the sleeve column 533 is installed in cooperation with the main shaft 532.

When installed, the sleeve column 533 is a cylindrical structure and is installed in cooperation with the main shaft 532. The two ends of the main shaft 532 respectively pass through the mounting seat 4 and the mounting plate 51 and are fixedly connected or adjusted through a nut and a gasket of the second fastener.

In the above solution, the auxiliary adjustment part 53 is located at the distance between the mounting plate 51 and the mounting base 4, which is equal to the length of the sleeve column 533, and is used to define the minimum size for accommodating the geophone 10. For a plurality of detectors 10 of the same type or the same size, the size of the detector 10 is simply measured by setting the length of the sleeve column 533, the installation height does not need to be repeatedly measured during installation, and the installation efficiency and the installation precision are improved.

Optionally, the main shaft 532 and the sleeve column 533 are both made of plastic material; the plastic is used as an excellent electromagnetic field shielding material, and can weaken and even completely shield the influence of electromagnetic field interference on Rayleigh wave detection precision.

In another embodiment, the sleeve post 533 and the main shaft 532 are integrally formed, defining a fixed mounting for use with a geophone 10 of one type or class.

Referring to fig. 6 and 7, in this embodiment, as a further improvement of the above technical solution, the mounting plate 51 includes a half-moon-shaped mounting groove 510 adapted to the shape of the edge of the pickup 10, and the pickup 10 is fitted into the half-moon-shaped mounting groove 510 and the tilt angle range is fixed or adjusted by the adjustment lever assembly.

Further, the geophone 10 in the present embodiment includes a protective case provided with an upper cover, a movement disposed inside the protective case, and a tail cone disposed outside the protective case. The upper cover is connected with the protective shell to form a step-shaped structure, and the protective shell is a cylindrical periphery.

The shape of the rim of the half moon shaped mounting groove 510 is adapted to the cylindrical periphery of the protective case. When the detector 10 is installed, the stepped structure formed by connecting the upper cover and the protective shell is clamped in the half-moon-shaped installation groove 510, and the swing angle range of the detector 10 is fixed and adjusted through the main adjusting part 52 and the auxiliary adjusting part 53 so as to adapt to the surfaces to be detected with different gradients or flatness.

Referring again to fig. 4, in the present embodiment, as a further improvement of the above technical solution, the mount 4 includes a mount main body 41 and a rubber gasket 42 disposed in the mount main body 41, and the rubber gasket 42 is disposed opposite to the top of the geophone 10.

Specifically, the mounting seat 4 is a rectangular block and is made of a thick plastic rectangular block, and the plastic is used as an excellent electromagnetic field shielding material, so that the influence of electromagnetic field interference on Rayleigh wave detection precision can be weakened or even completely shielded.

The rubber gasket 42 is filled in the geometric center of the mount body 41. A rubber pad 42 is placed opposite the top of the geophone 10 for cushioning purposes. When the surface to be detected is a rock or a similar hard texture surface, the rubber gasket 42 can further protect the geophone 10 and prevent the geophone 10 from being damaged by the axial force generated by the lifting adjusting part 6.

In this embodiment, as a further improvement of the above technical solution, the lifting adjusting part 6 includes a lifting spindle 61 penetrating through the mounting hole 2, a spring 62 located between the lifting spindle 61 and the mounting seat 4, and a third fastening member for fixing the lifting adjusting part 6, and the third fastening member and the spring are respectively disposed at two ends of the mounting hole.

Optionally, the lifting adjusting part 6 is made of steel, so that the overall strength of the fixing device is improved; the third fastener is a nut and a gasket made of steel.

During installation, the lifting main shaft 61 penetrates through the installation hole 2 to extend upwards, and the height of the detector 10 and the surface to be detected is adjusted through the spring 62; and finally, the lifting spindle 61 is locked through a nut and a gasket.

Referring to fig. 8 to 11, in this embodiment, as a further improvement of the above technical solution, the mounting bracket 1 includes two mounting posts 11 arranged at intervals, the mounting posts 11 are connected by a first cross bar 12 and a second cross bar 13 arranged along the length direction, the mounting hole 2 is located on the first cross bar 12, and the second cross bar 13 is located above the first cross bar 12.

In particular, the first bar 12 is a section bar with a rectangular cross section. The mounting holes 2 are arranged at regular intervals in the first bar 12. The second cross bar 13 is a section bar with a circular cross section, which is convenient for constructors to manually lift the fixing device and is also convenient for signal transmission lines of all the detectors 10 to be firmly arranged on the mounting frame 1, and damage caused by moving the ground can be avoided.

In this embodiment, as a further improvement of the above technical solution, the mounting post 11 includes a T-shaped handle 110 for facilitating the overall movement of the fixing device and a base disposed at the bottom of the T-shaped handle 110, and the base includes a single-post base 111 disposed at one side and a double-post base 112 disposed at the other side.

Optionally, the base of the lower portion of the fixing device, which contacts the surface to be detected, is of an asymmetric structure, and the single-column base 111 and the double-column base 112 are arranged simultaneously, so that the fixing device cannot topple over automatically when placed on the ground, the overall stability of the fixing device is improved, and the detection precision of Rayleigh surface waves is improved.

The foregoing is a more detailed description of the invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments disclosed herein. To the utility model belongs to the field of the ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. The utility model provides a fixing device of rayleigh surface wave detector, its characterized in that includes the mounting bracket, set up in on the mounting bracket and with the mounting hole of rayleigh surface wave detection point one-to-one and the fixed unit portion of corresponding the installation with each mounting hole, wherein:

2. The fixing device as claimed in claim 1, wherein the swing angle adjusting part comprises a mounting plate adapted to the edge shape of the geophone, and at least two adjusting rod assemblies cooperating with each other for adjusting the tilt angle of the mounting plate, the adjusting rod assemblies being movably connected with the mounting base.

3. The fixture according to claim 2, wherein the adjustment lever assembly comprises at least one main adjustment portion for fine adjustment of the tilt angle, at least one auxiliary adjustment portion for fixing a minimum distance between the mounting plate and the mounting seat, the main adjustment portion comprising a first screw connecting the mounting plate and the mounting seat and a first fastener cooperating with the first screw, the auxiliary adjustment portion comprising a second screw connecting the mounting plate and the mounting seat and a second fastener cooperating with the second screw.

4. The fixture of claim 3, wherein the second threaded rod includes a main shaft extending through the mounting plate and the mounting base, and a sleeve post disposed between the mounting plate and the mounting base, the sleeve post being cooperatively mounted with the main shaft.

5. The fixture of claim 2, wherein the mounting plate includes a half-moon shaped mounting slot that is shaped to fit the rim of the pickup, the pickup engaging the half-moon shaped mounting slot and being fixed or adjustable in tilt angle range by the adjustment lever assembly.

6. A fixture according to any one of claims 1 to 5, wherein the mount comprises a mount body and a rubber gasket disposed within the mount body, the rubber gasket being disposed opposite the top of the geophone.

7. The fixing device according to any one of claims 1 to 5, wherein the lifting adjusting portion includes a lifting spindle penetrating the mounting hole, a spring located between the lifting spindle and the mounting seat, and a third fastening member for fixing the lifting adjusting portion, and the third fastening member and the spring are respectively provided at both ends of the mounting hole.

8. The fixing device according to any one of claims 1 to 5, wherein the mounting frame comprises two mounting posts arranged at intervals, the mounting posts are connected through a first cross bar and a second cross bar arranged along the length direction, the mounting holes are located on the first cross bar, and the second cross bar is located above the first cross bar.

9. The fixture of claim 8, wherein the mounting post comprises a T-shaped handle for facilitating the overall movement of the fixture and a base disposed at the bottom of the T-shaped handle, the base comprising a single post base disposed on one side and a double post base disposed on the other side.

10. A fixation device as claimed in any one of claims 1 to 5, characterised in that the mounting holes are evenly spaced; the mounting base is made of plastic materials, and the mounting frame and the lifting adjusting portion are made of steel materials.