CN210288507U

CN210288507U - Pile foundation low strain dynamic tester

Info

Publication number: CN210288507U
Application number: CN201920632951.9U
Authority: CN
Inventors: 王西冲
Original assignee: Sichuan Yidu Construction Engineering Quality Inspection Co ltd
Current assignee: Sichuan Jiechenruida Engineering Testing Co ltd
Priority date: 2019-05-06
Filing date: 2019-05-06
Publication date: 2020-04-10
Anticipated expiration: 2029-05-06

Abstract

The utility model relates to a low meeting an emergency of pile foundation moves survey appearance belongs to pile foundation detection technical field, including probe, connecting wire and host computer, the host computer below is provided with the base, it is provided with the pole setting to rotate on the base, it is provided with the horizontal pole mutually vertically with the pole setting to slide in the pole setting, be provided with the drive assembly who is used for driving the horizontal pole along the length direction removal of pole setting on the base, the one end that the pole setting was kept away from to the horizontal pole is provided with the subassembly that strikes off that is used for cleaing away the soil block on the pile foundation lateral wall, the utility model has the advantages of thereby can clear away pile foundation surface adhered to soil.

Description

Pile foundation low strain dynamic tester

Technical Field

The utility model belongs to the technical field of the pile foundation detects technique and specifically relates to a low dynamic testing appearance that meets an emergency of pile foundation.

Background

The low strain dynamic measurement method is characterized in that a small hammer is used for knocking the pile top, a sensor bonded to the pile top is used for receiving stress wave signals from the pile, the dynamic response of a pile-soil system is researched by adopting a stress wave theory, and actually measured speed signals and frequency signals are subjected to inversion analysis, so that the integrity of the pile is obtained. The method is simple and convenient to detect, and the detection speed is high, but the key of the detection work is how to obtain a good waveform and how to better analyze the integrity of the pile body. In the detection, it does not have ponding to need the pile foundation surface to preserve the drying, but has ponding in detecting a bit to some pile foundation surfaces cover has tiny granule such as dust, influences the testing effect.

Therefore, chinese patent with publication number CN208219721U discloses a low strain dynamic tester for pile foundation, which comprises a probe, a connecting wire and a host, wherein the probe passes through the connecting wire and is connected with the host, a signal line and an air pipe are arranged in the connecting wire, a sensor and an air outlet are arranged in the probe, a controller, a display, an air pump and a heating pipe are arranged in the host, a heating wire is arranged in the heating pipe, the air outlet of the air pump is connected with the heating pipe, the heating pipe passes through the air pipe and the air outlet, the controller passes through the signal line and the sensor is connected, and the display is connected with the controller. And drying the surface of the pile foundation by using the probe, and thoroughly removing accumulated water. The air is heated by the electric heating wire in the heating pipe, and the evaporation of the moisture on the undried position of the surface of the pile foundation is promoted by continuously blowing high-temperature gas to the surface of the pile foundation. And meanwhile, fine particles on the surface of the pile foundation can be removed, firm pile foundation parts are leaked, and the detection accuracy is improved.

But above-mentioned pile foundation low strain mobility tester has a bit weak point to be located, and this pile foundation low strain mobility tester can only clear away some tiny particulate matters on pile foundation surface, to some firm clay pieces of adhesion, can not clear away these clay pieces through blowing to the pile foundation surface, and the existence of these clay pieces still can make the accuracy of detection not high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low dynamic testing appearance that meets an emergency of pile foundation has thereby can clear away the pile foundation surface adhered to earth piece and improve the advantage of the accuracy that detects.

The above object of the present invention can be achieved by the following technical solutions:

the utility model provides a low dynamic surveying appearance that meets an emergency of pile foundation, includes probe, connecting wire and host computer, the host computer below is provided with the base, it is provided with the pole setting to rotate on the base, it is provided with the horizontal pole mutually vertically with the pole setting to slide in the pole setting, be provided with the drive assembly who is used for driving the horizontal pole and removes along the length direction of pole setting on the base, the one end that the pole setting was kept away from to the horizontal pole is provided with the subassembly that strikes off that is used for cleaing away the.

Implement above-mentioned technical scheme, at first the subassembly that strikes off on the horizontal pole is close to the pile foundation, then start drive assembly, make the horizontal pole begin to remove along the length direction of riser, strike off the subassembly this moment and just can begin to scrape the shovel to pile foundation surface adnexed earth piece along the length direction of pile foundation, thereby get off pile foundation surface's earth piece scraping shovel, resume the tiny granule clearance on pile foundation surface with the probe after that, thereby make pile foundation surface's impurity clear away comparatively thoroughly, finally reach the effect that improves the accuracy that detects.

Further, strike off the subassembly and include the lantern ring, doctor-bar, the lantern ring rotates the tip that sets up at the horizontal pole, the internal diameter of the lantern ring is greater than the diameter of pile foundation, the doctor-bar sets up on the inner wall of the lantern ring and is provided with a plurality ofly around the circumference of the lantern ring, the doctor-bar is laminated with the lateral wall of pile foundation, be provided with on the horizontal pole and be used for driving lantern ring pivoted actuating mechanism.

Implement above-mentioned technical scheme, at first cover ring cover is on the pile foundation, make the doctor-bar laminate with the surface of pile foundation, start actuating mechanism after that, let the lantern ring begin to rotate, the doctor-bar just can rotate along with the rotation of the lantern ring this moment, begin to scrape the shovel to the pile foundation surface, restart drive assembly immediately lets the vertical downstream of horizontal pole, let the lantern ring take the doctor-bar to remove in vertical direction again when around pile foundation circumferential direction scraping shovel, thereby reach and let the earth piece on pile foundation surface clear up more thorough effect.

Furthermore, the end part of the cross rod, which is far away from the vertical rod, is provided with a rolling bearing, and the lantern ring penetrates through the inner ring of the rolling bearing and is in interference fit with the inner ring of the rolling bearing.

According to the technical scheme, the lantern ring is fixed at the end part of the cross rod and can smoothly rotate due to the arrangement of the rolling bearing.

Further, actuating mechanism is including the fixed rotation motor that sets up on the horizontal pole, the fixed ring gear that is provided with around the circumference of the lantern ring on the outer wall of the lantern ring, be provided with on the output shaft of rotation motor with ring gear looks meshing's circular gear.

Implement above-mentioned technical scheme, start and rotate the motor, rotate the epaxial round gear of motor output this moment and just can begin to rotate, because ring gear and the meshing of round gear on the lantern ring outer wall, consequently the ring gear also can rotate to drive the lantern ring and begin to rotate, reach the comparatively convenient effect of drive lantern ring rotation.

Further, the pole setting rotates to be set up on the base, the one end that the horizontal pole is close to the pole setting be provided with the sleeve pipe that the pole setting cup jointed mutually, the surface of pole setting is provided with the external screw thread along the length direction of pole setting, be provided with the internal thread that matches with the external screw thread on the sheathed tube inner wall, drive assembly is including setting up the servo motor on the base, the pole setting is close to coaxial driven bevel gear that is provided with in base department, be provided with on servo motor's the output shaft with driven bevel gear meshing's drive bevel gear, be provided with on the sleeve pipe and prevent the sleeve pipe along with the pole setting pivoted splines.

Implement above-mentioned technical scheme, start servo motor, servo motor's the epaxial initiative bevel gear of output begins to rotate this moment, because initiative bevel gear and driven bevel gear meshing, consequently driven bevel gear also can take the pole setting to begin to rotate, and under the effect of rotation stopping spare, the sleeve pipe can not rotate along with the pole setting, but begins to move along the length direction of pole setting under external screw thread and the internal screw-thread cooperation, thereby drive the horizontal pole and remove at the length direction of pole setting, reach the comparatively convenient effect of drive horizontal pole removal in the vertical direction of pole setting.

Furthermore, a vertical upwards extending track is arranged on one side of the vertical rod on the base, a sliding groove is formed in the track along the length direction of the track, the rotation stopping piece comprises a sliding block which is arranged on the sleeve and matched with the sliding groove, and the sliding block is inserted into the sliding groove and can slide in the sliding groove.

By implementing the technical scheme, when the sliding block on the sleeve is inserted into the sliding groove on the track, the sleeve is limited to rotate in the circumferential direction. Thereby let the sleeve pipe can't rotate along with the pole setting, therefore can only remove along the length direction of pole setting when the pole setting rotates, reach the effect that conveniently prevents the sleeve pipe and rotate along with the pole setting.

Further, be provided with on the base and place a section of thick bamboo, place and place the water storage bottle in the section of thick bamboo, it is provided with the chucking spare that is used for placing a section of thick bamboo with the chucking of water storage bottle to place on the section of thick bamboo.

Implement above-mentioned technical scheme, before the scraper earth, pour some water toward the pile foundation surface through the water storage bottle, can let the earth piece become comparatively lax after meeting water, more easily scrape the earth piece on pile foundation surface down in the time of consequently the scraper, and setting up of chucking spare can be water storage bottle snap-on placing a section of thick bamboo, directly when needing to use take out the water storage bottle in placing a section of thick bamboo can.

Further, chucking spare including set up spring and the rubber on placing a section of thick bamboo inner wall and support tight piece, rubber support tight piece set up at the free end of spring and with the water storage bottle butt.

By implementing the technical scheme, when the water storage bottle is placed into the placing cylinder, the spring can be compressed under the pushing action of manpower, so that the water storage bottle is pressed into the placing cylinder under the condition of being attached to the rubber abutting piece; after the water storage bottle is released, the spring can drive the rubber abutting sheet to tightly abut against the side wall of the water storage bottle due to the elasticity of the spring, so that the effect of abutting the water storage bottle in the placing cylinder is achieved.

To sum up, the utility model discloses following beneficial effect has:

firstly, a scraping component on a cross rod is close to a pile foundation, then a driving component is started, so that the cross rod starts to move along the length direction of a vertical rod, at the moment, the scraping component can begin to scrape soil blocks attached to the surface of the pile foundation along the length direction of the pile foundation, so that the soil blocks on the surface of the pile foundation are scraped, then a probe is used for continuously cleaning fine particles on the surface of the pile foundation, so that impurities on the surface of the pile foundation are thoroughly cleaned, and finally the effect of improving the detection accuracy is achieved;

two, before the scraper earth, pour some water toward the pile foundation surface through the water storage bottle, can let the earth piece become comparatively lax after meeting water, more easily scrape the surperficial earth piece of pile foundation down in the time of consequently the scraper, and setting up of chucking spare can be water storage bottle snap-on placing a section of thick bamboo, directly when needing to use in placing a section of thick bamboo take out the water storage bottle can.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 2;

FIG. 3 is an enlarged view of portion B of FIG. 2;

fig. 4 is a partial sectional view for showing the connection relationship between the placing cylinder and the water storage bottle according to the embodiment of the present invention.

Reference numerals: 1. a host; 11. a connecting wire; 12. a probe; 2. a base; 21. a servo motor; 211. a drive bevel gear; 3. erecting a rod; 31. a driven bevel gear; 4. a cross bar; 41. a rolling bearing; 42. rotating the motor; 421. a circular gear; 43. a sleeve; 431. a slider; 5. a scraping assembly; 51. a collar; 511. a toothed ring; 52. scraping a blade; 6. a track; 61. a chute; 7. placing the cylinder; 71. a water storage bottle; 8. a retainer; 81. a spring; 82. and a rubber abutting sheet.

Detailed Description

The technical solution of the embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in fig. 1 and 2, the low-strain dynamic measuring instrument for the pile foundation comprises a probe 12, a connecting wire 11 and a host 1, wherein a base 2 is arranged below the host 1, an upright rod 3 is rotatably arranged on the base 2, and the upright rod 3 vertically extends upwards; in the embodiment, the base 2 is provided with a bearing, and the upright rod 3 passes through an inner ring of the bearing and is in interference fit with the inner ring of the bearing, so that the upright rod 3 can rotate; the upright rod 3 is provided with a cross rod 4 which is perpendicular to the upright rod 3 in a sliding manner, the base 2 is provided with a driving assembly, and the driving assembly is used for driving the cross rod 4 to move along the length direction of the upright rod 3. Upright rod 3 rotates and sets up on base 2, the one end that horizontal pole 4 is close to upright rod 3 is provided with the sleeve pipe 43 that cup joints mutually with upright rod 3, the surface of upright rod 3 is provided with the external screw thread along the length direction of upright rod 3, be provided with the internal thread that matches with the external screw thread on the inner wall of sleeve pipe 43, drive assembly is servo motor 21 who sets up on base 2, upright rod 3 is close to base 2 department coaxial driven bevel gear 31 that is provided with, be provided with the drive bevel gear 211 with driven bevel gear 31 meshing on servo motor 21's the output shaft, be provided with on the sleeve pipe 43 and prevent sleeve pipe 43 along with upright rod 3 pivoted rotation stopping.

As shown in fig. 1 and 2, a rail 6 extending vertically and upwardly is disposed on one side of the upright 3 on the base 2, that is, the length direction of the rail 6 is the same as the length direction of the upright 3, a sliding groove 61 is disposed on the rail 6 along the length direction of the rail 6, the rotation stopping member is a sliding block 431 disposed on the sleeve 43 and matched with the sliding groove 61, and the sliding block 431 is inserted into the sliding groove 61 and can slide in the sliding groove 61.

When the servo motor 21 is first started, the drive bevel gear 211 on the output shaft of the servo motor 21 starts to rotate, and the drive bevel gear 211 is engaged with the driven bevel gear 31, so that the driven bevel gear 31 starts to rotate with the vertical rod 3. And because the slider 431 that the cover was established on the sleeve 43 on the pole setting 3 is inserted in the spout 61 on the track 6, and the internal thread in the sleeve 43 cooperatees with the external screw thread on the pole setting 3, should be along with pole setting 3 pivoted sleeve 43 together, just can not rotate along with the pole setting 3 after the slider 431 inserts in the spout 61, but begin to move along the length direction of pole setting 3 under the cooperation of external screw thread and internal thread to drive horizontal pole 4 and remove at the length direction of pole setting 3, reach the comparatively convenient effect of drive horizontal pole 4 at the vertical direction of pole setting 3 removal.

As shown in fig. 1 and 3, one end of the cross rod 4, which is far away from the vertical rod 3, is provided with a scraping assembly 5 for clearing soil blocks on the side wall of the pile foundation, the scraping assembly 5 comprises a sleeve ring 51 and a scraping blade 52, the sleeve ring 51 is rotatably arranged at the end part of the cross rod 4, the inner diameter of the sleeve ring 51 is larger than the diameter of the pile foundation, the scraping blade 52 is arranged on the inner wall of the sleeve ring 51 and is provided with a plurality of scraping blades around the circumferential direction of the sleeve ring 51, the scraping blade 52 is attached to the side wall of the pile foundation, and the.

As shown in fig. 1 and 3, the end of the crossbar 4 away from the vertical rod 3 is provided with a rolling bearing 41, the collar 51 passes through an inner ring of the rolling bearing 41 and is in interference fit with the inner ring of the rolling bearing 41, the driving mechanism is a rotating motor 42 fixedly arranged on the crossbar 4, a toothed ring 511 is fixedly arranged on the outer wall of the collar 51 around the circumferential direction of the collar 51, and an output shaft of the rotating motor 42 is provided with a circular gear 421 meshed with the toothed ring 511.

Firstly, the lantern ring 51 is sleeved on the pile foundation, so that the scraping blade 52 is attached to the surface of the pile foundation, then the rotating motor 42 is started, the circular gear 421 on the output shaft of the rotating motor 42 starts to rotate at the moment, and the gear ring 511 on the outer wall of the lantern ring 51 is meshed with the circular gear 421, so that the gear ring 511 also rotates, the lantern ring 51 is driven to start to rotate, and the scraping blade 52 continuously scrapes the outer wall of the pile foundation in the circumferential direction of the pile foundation; the servo motor 21 is then restarted to move the cross bar 4 in the vertical direction, and the collar 51 drives the scraper blades 52 to rotate around the circumference of the pile foundation and move in the vertical direction at the same time, so that the soil blocks on the surface of the pile foundation are cleaned more thoroughly. Due to the characteristics of the servo motor 21, the servo motor 21 can rotate in the positive direction and then rotate in the negative direction, so that the transverse rod 4 can move in the vertical direction of the vertical rod 3 in a reciprocating mode, and the scraping blade 52 can continuously move in the vertical direction in a reciprocating mode to scrape the pile foundation surface.

As shown in fig. 2 and 4, the base 2 is provided with a placing barrel 7, a water storage bottle 71 is placed in the placing barrel 7, a clamping piece 8 for clamping the water storage bottle 71 in the placing barrel 7 is arranged on the placing barrel 7, the clamping piece 8 comprises a spring 81 and a rubber abutting piece 82, the spring 81 is arranged on the inner wall of the placing barrel 7, and the rubber abutting piece 82 is arranged at the free end of the spring 81 and abuts against the water storage bottle 71.

Before the earth is scraped, water is poured onto the surface of the pile foundation through the water storage bottle 71, so that the earth blocks can be loosened after meeting water, and the earth blocks on the surface of the pile foundation can be scraped off more easily during scraping; when the water storage bottle 71 is placed in the placing cylinder 7, the spring 81 is compressed under the pushing action of manpower, so that the water storage bottle 71 is pressed into the placing cylinder 7 under the condition of being attached to the rubber abutting sheet 82; after the water bottle 71 is released, the spring 81 drives the rubber abutting sheet 82 to tightly abut against the side wall of the water bottle 71 due to the elastic force of the spring, so that the effect of abutting the water bottle 71 in the placing barrel 7 is achieved.

The specific working process is as follows: firstly, taking out the water storage bottle 71 from the placing barrel 7, pouring water on the surface of a pile foundation, then sleeving the lantern ring 51 on the cross rod 4 into the pile foundation to enable the scraping blade 52 to be abutted against the surface of the pile foundation, then starting the rotating motor 42 to enable the lantern ring 51 to start to rotate, then starting the servo motor 21 to enable the cross rod 4 to move in the vertical direction, and scraping the soil blocks on the surface of the pile foundation by the scraping blade 52 along the length direction of the pile foundation; after scraping, the collar 51 is taken out of the pile foundation, and hot air and drying are carried out by using the probe 12 to aim at the pile foundation, so that water on the surface of the pile foundation is dried and fine particles on the surface of the pile foundation are blown away.

Claims

1. The pile foundation low-strain dynamic tester comprises a probe (12), a connecting wire (11) and a host (1), and is characterized in that a base (2) is arranged below the host (1), a vertical rod (3) is arranged on the base (2) in a rotating manner, a cross rod (4) perpendicular to the vertical rod (3) is arranged on the vertical rod (3) in a sliding manner, a driving assembly used for driving the cross rod (4) to move along the length direction of the vertical rod (3) is arranged on the base (2), and a scraping assembly (5) used for clearing soil blocks on the side wall of a pile foundation is arranged at one end, far away from the vertical rod (3), of the cross rod (4).

2. The low-strain dynamic tester for the pile foundation of claim 1, wherein: strike off subassembly (5) including lantern ring (51), doctor-bar (52), lantern ring (51) are rotated and are set up the tip at horizontal pole (4), the internal diameter of lantern ring (51) is greater than the diameter of pile foundation, doctor-bar (52) set up on the inner wall of lantern ring (51) and are provided with a plurality ofly around the circumference of lantern ring (51), doctor-bar (52) and the lateral wall laminating of pile foundation, be provided with on horizontal pole (4) and be used for driving lantern ring (51) pivoted actuating mechanism.

3. The low-strain dynamic tester for pile foundations according to claim 2, characterized in that: the end part, far away from the vertical rod (3), of the cross rod (4) is provided with a rolling bearing (41), and the lantern ring (51) penetrates through an inner ring of the rolling bearing (41) and is in interference fit with the inner ring of the rolling bearing (41).

4. The low-strain dynamic tester for pile foundations according to claim 3, characterized in that: the driving mechanism comprises a rotating motor (42) fixedly arranged on the cross rod (4), a gear ring (511) is fixedly arranged on the outer wall of the sleeve ring (51) around the circumferential direction of the sleeve ring (51), and a circular gear (421) meshed with the gear ring (511) is arranged on an output shaft of the rotating motor (42).

5. The low-strain dynamic tester for the pile foundation of claim 1, wherein: the utility model discloses a drive assembly, including base (2), pole setting (3), horizontal pole (4), pole setting (3), the surface of pole setting (3) is provided with the external screw thread along the length direction of pole setting (3), be provided with the internal thread that matches with the external screw thread on the inner wall of sleeve pipe (43), drive assembly is including setting up servo motor (21) on base (2), pole setting (3) are close to base (2) and locate coaxial driven bevel gear (31) that is provided with, be provided with on the output shaft of servo motor (21) with driven bevel gear (31) meshed initiative bevel gear (211), be provided with on sleeve pipe (43) and prevent sleeve pipe (43) along with pole setting (3) pivoted rotation-stopping piece together.

6. The low-strain dynamic tester for the pile foundation of claim 5, wherein: the base (2) are located pole setting (3) one side and are provided with vertical track (6) that upwards extend, spout (61) have been seted up along the length direction of track (6) on track (6), the piece that splines including set up on sleeve pipe (43) with slider (431) that spout (61) match, slider (431) insert in spout (61) and can slide in spout (61).

7. The low-strain dynamic tester for the pile foundation of claim 1, wherein: be provided with on base (2) and place a section of thick bamboo (7), place and place water storage bottle (71) in a section of thick bamboo (7), it is provided with on a section of thick bamboo (7) and is used for placing chucking spare (8) of a section of thick bamboo (7) with water storage bottle (71) chucking.

8. The low-strain dynamic tester for pile foundations according to claim 7, characterized in that: chucking spare (8) including set up spring (81) and the rubber on placing a section of thick bamboo (7) inner wall and support tight piece (82), rubber support tight piece (82) set up at the free end of spring (81) and with water bottle (71) butt.