CN211948608U

CN211948608U - Dynamic strain calibrating device based on pile foundation vibration feedback

Info

Publication number: CN211948608U
Application number: CN202020609593.2U
Authority: CN
Inventors: 张卫东
Original assignee: Wuhan Construction Technology Co ltd
Current assignee: Wuhan Construction Technology Co ltd
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2020-11-17
Anticipated expiration: 2030-04-22

Abstract

The utility model provides a dynamic strain calibrating installation based on pile foundation vibrations feedback belongs to foundation pile and detects technical field. This calibrating installation, the power distribution box comprises a box body, inside one side top-down of box has set gradually detector, inductor and calibrating device subassembly, the opposite side of box is provided with the detection hammer, and the fixed band passes the second connecting block and fixes the calibrating device subassembly on the inductor surface, calibrating device casing, lifting rope, lead block, light source module and the axle center of fixing base is located same vertical line, opens the top of switch light source module transmission laser to fixing base, and the position of adjustment inductor is until the laser irradiation of light source module transmission on the mark of fixing base to the axis that the dynamic strain calibrating installation that makes vibrations feedback has the accurate inductor of mounted position is parallel with the longitudinal axis of pile body, and the accurate effect of testing data.

Description

Dynamic strain calibrating device based on pile foundation vibration feedback

Technical Field

The utility model relates to a pile foundation detects technical field, particularly, relates to a dynamic strain calibrating installation based on pile foundation vibrations feedback.

Background

The foundation pile detection method is a pile body quality detection method generally adopted in China at present, and is characterized in that a dynamic strain detection pile foundation detector for vibration feedback is used for detecting the integrity of the foundation pile by utilizing a reflection wave method, a dynamic force is applied to the pile top, the dynamic force can be transient impact force or steady-state excitation force, a pile-soil system generates dynamic response under the action of the dynamic force, a pile top of an inductor is used for detecting a dynamic response signal, the structural integrity of the pile body is judged by time domain analysis or transfer function analysis of the signal, the inductor is required to be vertically arranged at the top of the pile foundation in the detection process, and the top of the pile foundation has the problem of unevenness, need manual operation at the in-process that is connected to the inductor to pile foundation top, be difficult to guarantee that inductor position installation is accurate, it is not perpendicular with the pile foundation to appear the inductor easily under the unskilled condition of operation, leads to the axis of inductor and the longitudinal axis nonparallel of pile body, produces the contained angle between incident wave and the back wave to it is inaccurate to lead to the data that detect.

SUMMERY OF THE UTILITY MODEL

In order to compensate above not enough, the utility model provides a dynamic strain calibrating installation based on pile foundation vibrations feedback through increasing the calibrating device subassembly, has solved the axis of the mounted position inaccuracy inductor that present installation inductor exists and has leaded to the problem that detected data has the mistake with the longitudinal axis nonparallel of pile body.

The utility model discloses a realize like this:

the dynamic strain calibrating device based on pile foundation vibration feedback comprises a box body, wherein a detector, an inductor and a calibrating device component are sequentially arranged on one side in the box body from top to bottom, a detecting hammer is arranged on the other side of the box body, the calibrating device component comprises a calibrating device shell, a lifting rope, a lead block, a light source module, a fixed seat, a power supply, a fixed block, an anti-skid layer, a switch, a first connecting block, a fixed belt, a second connecting block, a first compression roller, a second compression roller, a clamping block, a ratchet wheel, a fixed column, a limiting block, an elastic part and a handle, one end of the lifting rope is arranged on the top of the inner wall of the calibrating device shell, the lead block is arranged at the other end of the lifting rope, the light source module is arranged at the bottom of the lead block, the fixed seat is arranged at the bottom of the inner, the fixing block is arranged on the other side of the calibrating device shell, the anti-skid layer is arranged on the right side of the fixing block, the switch and the first connecting block are sequentially arranged on the rear side surface of the fixing block from left to right, the fixing belt is arranged on one side of the first connecting block, the second connecting block is arranged on the front side of the fixing block, a first through groove is formed in one side of the fixing block, a first groove and a second groove are respectively formed in the two sides of the through groove, a second through groove is formed in one side of the first groove, the first compression roller and the second compression roller are respectively arranged in the first groove and the second groove, the fixture block is arranged on the surface of the first compression roller, the ratchet wheel is arranged on the top of the first compression roller, the fixing column is arranged in the second through groove, and the elastic part and the limiting block are sequentially arranged on the surface of the fixing column from left to, the handle is installed at one end of the fixing column, a hemispherical convex point is arranged on one side of the surface of the fixing band, and a steel mesh is arranged inside the fixing band.

In an embodiment of the present invention, the calibration device housing, the lifting rope, the lead block, the light source module and the axis of the fixing base are located on the same vertical line, and the light source module is used for emitting laser.

In an embodiment of the present invention, one side of the fixing block is provided with an arc portion, and a shape of the arc portion is adapted to an outer surface shape of the inductor.

In an embodiment of the present invention, a mark is disposed at the top axis of the fixing base.

The utility model discloses an in one embodiment, fixture block evenly distributed in first compression roller with the surface of second compression roller.

In an embodiment of the present invention, the fixing column penetrates through the second through groove, and one end of the fixing column contacts with the ratchet wheel.

In an embodiment of the present invention, the first pressing roller and the second pressing roller are rotatably connected to the second connecting block through a rotating shaft.

In an embodiment of the present invention, the calibration device casing is made of a transparent material.

In an embodiment of the present invention, the switch is electrically connected to the light source module and the power supply respectively.

The utility model has the advantages that: the utility model discloses a dynamic strain calibrating installation based on pile foundation vibrations feedback that above-mentioned design obtained, the fixed band passes the second connecting block and fixes the calibrating device subassembly on the inductor surface, calibrating device casing, lifting rope, lead block, light source module and the axle center of fixing base is located same vertical line, opens the top that switch light source module transmitted laser to the fixing base, and the position of adjustment inductor is on the mark of fixing base until the laser irradiation of light source module transmission to the axis that the dynamic strain calibrating installation that makes vibrations feedback had the accurate inductor of mounted position is parallel with the longitudinal axis of pile body, the accurate effect of testing data.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a dynamic strain calibrating apparatus provided in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a calibration device assembly according to an embodiment of the present invention;

fig. 3 is a schematic top view of a calibration device assembly according to an embodiment of the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 3;

fig. 5 is a schematic view of a fixing band structure provided by an embodiment of the present invention.

In the figure: 1-a box body; 2-detecting the instrument; 3-a sensor; 4-calibrating the device assembly; 401-calibrating the device housing; 402-a lifting rope; 403-lead block; 404-a light source module; 405-a fixed seat; 406-a power supply; 407-fixed block; 408-an anti-slip layer; 409-a switch; 4010 — first connection block; 4011-securing straps; 401101-hemispherical bumps; 401102-steel mesh; 4012-second connection block; 4013-a first through slot; 4014-first groove; 4015 — a second groove; 4016-first press roll; 4017-second press roll; 4018-fixture block; 4019-ratchet wheel; 4020-a second through slot; 4021-a fixed column; 4022-a limiting block; 4023-an elastic member; 4024-a handle; 5-detecting the hammer.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-5, the present invention provides a technical solution: a dynamic strain calibrating device based on pile foundation vibration feedback comprises a box body 1, wherein a detector 2, an inductor 3 and a calibrating device assembly 4 are sequentially arranged on one side inside the box body 1 from top to bottom, a detecting hammer 5 is arranged on the other side of the box body 1, the calibrating device assembly 4 comprises a calibrating device shell 401, a lifting rope 402, a lead block 403, a light source module 404, a fixed seat 405, a power supply 406, a fixed block 407, an anti-skid layer 408, a switch 409, a first connecting block 4010, a fixing belt 4011, a second connecting block 4012, a first pressing roller 4016, a second pressing roller 4017, a clamping block 4018, a ratchet 4019, a fixed column 4021, a limiting block 4022, an elastic piece 4023 and a handle 4024, the calibrating device shell 401 is made of transparent material, in the embodiment, the calibrating device shell 401 is made of acrylic plate, one end of the lifting rope 402 is arranged on the top of the inner wall of the calibrating device shell 401, the lead block 403 is arranged, the light source module 404 is installed at the bottom of the lead block 403, the fixed seat 405 is installed at the bottom of the inner wall of the calibration device shell 401, a mark is arranged at the top axis of the fixed seat 405, the mark is used for indicating whether the current sensor installation position is horizontal to the longitudinal central line of the foundation pile or not, the axes of the calibration device shell 401, the lifting rope 402, the lead block 403, the light source module 404 and the fixed seat 405 are located on the same vertical line, the light source module 404 is used for emitting laser, in this embodiment, the light source module 404 is limited to a laser lamp, the laser lamp can emit laser beams with light rays collected, the position of the sensor 3 is adjusted by observing the current position of the laser beams emitted by the light source module 404 until the laser beams emitted by the light source module 404 coincide with the mark arranged at the top axis of the fixed seat 405, which indicates that the current installation position of the sensor 3 is horizontal to the longitudinal central, the fixed block 407 is mounted on the other side of the calibration device housing 401, an arc portion is disposed on the right side of the fixed block 407, the shape of the arc portion is adapted to the outer surface shape of the inductor 3, the anti-slip layer 408 is mounted on the right side surface of the fixed block 407, the anti-slip layer 408 is made of nitrile rubber in the present novel usage, the anti-slip layer 408 is used for preventing the calibration device assembly 4 from sliding with the inductor 3, the switch 409 and the first connecting block 4010 are sequentially mounted on the rear side surface of the fixed block 407 from left to right, the fixing band 4011 is mounted on one side of the first connecting block 4010, the second connecting block 4012 is mounted on the front side of the fixed block 407, a first through groove 4013 is formed on one side of the fixed block 407, first and second grooves 4014 and 4015 are formed on two sides of the through groove, a second through groove 4020 is formed on one side of the first groove 4014, the first compression roller 4016 and the second compression roller 4017, the first press roller 4016 and the second press roller 4017 are rotatably connected with the second connecting block 4012 through rotating shafts, the fixture block 4018 is mounted on the surface of the first press roller 4016, the fixture block 4018 is uniformly distributed on the outer surfaces of the first press roller 4016 and the second press roller 4017, the ratchet 4019 is mounted at the top of the first press roller 4016, the fixing column 4021 is mounted in the second through groove 4020, the fixing column 4021 penetrates through the second through groove 4020, one end of the fixing column 4021 is in contact with the ratchet 4019, the elastic piece 4023 and the limiting block 4022 are sequentially mounted on the surface of the fixing column 4021 from left to right, the handle 4024 is mounted at one end of the fixing column 4021, one side of the surface of the fixing band 4011 is provided with a hemispherical salient point 401101, a steel mesh 401102 is arranged inside the fixing band 4011, the steel mesh 401102 is used for enhancing the strength of the fixing band 4011, the switch is respectively electrically connected with the light source module 404 and the, the fixing band 4011 is clamped by the first pressing roll 4016 and the second pressing roll 4017 through a surface-mounted clamping block 4018, the fixing band 4011 is pulled to drive the first pressing roll 4016 and the second pressing roll 4017 to rotate, the first pressing roll 4016 drives the ratchet 4019 mounted at the top of the first pressing roll 4016 to rotate, the fixing column 4021 in contact with the ratchet 4019 bounces on the surface of the ratchet 4019, the fixing band 4011 stops being pulled after the fixing band 4011 is pulled to a proper tension, the first pressing roll 4016 and the second pressing roll 4017 stop rotating, the fixing column 4021 fixes the ratchet 4019, so that the calibrating device assembly 4 is fixed on the sensor 3, when the sensor 3 is separated from the calibrating device assembly 4, the handle 4024 is pulled out, the fixing column 4021 is separated from the ratchet 4011, the fixing band 4011 is pulled out, the calibrating device assembly 4 is separated from the sensor 3, so that the axis of the vibration-fed dynamic strain calibrating device is parallel to the longitudinal axis of the accurate mounting position sensor and the longitudinal axis, and detecting the accurate effect of the data.

Specifically, this dynamic strain calibrating installation based on pile foundation vibrations feedback's theory of operation: the fixing band 4011 penetrates into the first through groove 4013, the first pressing roller 4016 and the second pressing roller 4017 clamp the fixing band 4011 through a clamping block 4018 installed on the surface, the fixing band 4011 is pulled to drive the first pressing roller 4016 and the second pressing roller 4017 to rotate, the first pressing roller 4016 drives a ratchet 4019 installed at the top of the first pressing roller 4016 to rotate, a fixing column 4021 in contact with the ratchet 4019 jumps on the surface of the ratchet 4019, the fixing band 4011 stops being pulled after the fixing band 4011 is pulled to a proper tension degree, the first pressing roller 4016 and the second pressing roller 4017 stop rotating, the ratchet 4019 is fixed by the fixing column 4021, the sensor 3 is coupled to the top of the pile foundation through a coupling agent, a switch 409 is opened, the current position of a laser beam emitted by the light source module 404 is observed, the position of the sensor 3 is adjusted until the laser beam emitted by the light source module 404 coincides with a mark arranged at the axis of the top of the fixing base 405, the current installation position of the sensor, after detection is finished, the handle 4024 is pulled out, the fixing column 4021 is separated from the ratchet 4019, the fixing belt 4011 is pulled out, and the calibrating device assembly 4 is separated from the sensor 3, so that the vibration feedback dynamic strain calibrating device has the effects that the axis of the accurate sensor of the mounting position is parallel to the longitudinal axis of the pile body, and the detection data is accurate.

It should be noted that the specific model specifications of the light source module 404, the inductor 3, the power source 406, and the switch 409 need to be determined by type selection according to the actual specification of the device, and the specific type selection calculation method adopts the prior art, so detailed description is omitted.

The light source module 404, the inductor 3, the power source 406 and the switch 409, and the principles thereof, will be apparent to those skilled in the art and will not be described in detail herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Dynamic strain calibrating device based on pile foundation vibration feedback, which is characterized by comprising a box body (1), wherein a detector (2), an inductor (3) and a calibrating device component (4) are sequentially arranged on one side of the interior of the box body (1) from top to bottom, a detecting hammer (5) is arranged on the other side of the box body (1), the calibrating device component (4) comprises a calibrating device shell (401), a lifting rope (402), a lead block (403), a light source module (404), a fixed seat (405), a power supply (406), a fixed block (407), an anti-slip layer (408), a switch (409), a first connecting block (4010), a fixed belt (4011), a second connecting block (4012), a first compression roller (4016), a second compression roller (4017), a fixture block (4018), a ratchet wheel (4019), a fixed column (4021), a limiting block (4022), an elastic piece (4023) and a handle (4024), one end of the lifting rope (402) is installed on the top of the inner wall of the calibrating, lead block (403) install in the other end of lifting rope (402), light source module (404) install in the bottom of lead block (403), fixing base (405) install in the inner wall bottom of calibrating device casing (401), power (406) install in one side of calibrating device casing (401), fixed block (407) install in the opposite side of calibrating device casing (401), skid resistant course (408) install in the right side of fixed block (407), switch (409) with first connecting block (4010) install in proper order from left to right in the rear side surface of fixed block (407), fixed band (4011) install in one side of first connecting block (4010), second connecting block (4012) install in the front side of fixed block (407), first logical groove (4013) has been seted up to one side of fixed block (407), a first groove (4014) and a second groove (4015) are respectively arranged on two sides of the through groove, a second through groove (4020) is formed in one side of the first groove (4014), the first pressing roller (4016) and the second pressing roller (4017) are respectively installed in the first groove (4014) and the second groove (4015), the fixture block (4018) is installed on the surface of the first pressing roller (4016), the ratchet wheel (4019) is installed on the top of the first pressing roller (4016), the fixed column (4021) is arranged in the second through groove (4020), the elastic piece (4023) and the limiting block (4022) are sequentially arranged on the surface of the fixed column (4021) from left to right, the handle (4024) is installed at one end of the fixed column (4021), hemispherical salient points (401101) are arranged on one side of the surface of the fixed band (4011), and a steel net (401102) is arranged inside the fixed band (4011).

2. The dynamic strain verification device based on pile foundation vibration feedback as claimed in claim 1, wherein the axes of the calibration device housing (401), the lifting rope (402), the lead block (403), the light source module (404) and the fixed seat (405) are located on the same vertical line, and the light source module (404) is used for emitting laser.

3. The dynamic strain verification device based on pile foundation vibration feedback as claimed in claim 1, wherein one side of the fixing block (407) is provided with an arc portion, and the shape of the arc portion is matched with the shape of the outer surface of the inductor (3).

4. The dynamic strain calibrating device based on pile foundation vibration feedback as claimed in claim 1, wherein a mark is arranged at the top axis of the fixed seat (405).

5. The dynamic strain verification device based on pile foundation vibration feedback as claimed in claim 1, wherein the fixture blocks (4018) are uniformly distributed on the outer surfaces of the first compression roller (4016) and the second compression roller (4017).

6. The dynamic strain calibrating device based on pile foundation vibration feedback is characterized in that the fixed column (4021) penetrates through the second through groove (4020), and one end of the fixed column (4021) is in contact with the ratchet wheel (4019).

7. The dynamic strain verification device based on pile foundation vibration feedback as claimed in claim 1, wherein the first compression roller (4016) and the second compression roller (4017) are rotatably connected with the second connecting block (4012) through rotating shafts.

8. The dynamic strain verification device based on pile foundation vibration feedback as claimed in claim 1, wherein the calibration device housing (401) is made of a transparent material.

9. The dynamic strain verification device based on pile foundation vibration feedback as claimed in claim 1, wherein the switch (409) is electrically connected with the light source module (404) and the power supply (406) respectively.