Pile driving recorder based on laser distance measuring sensor

Abstract

The present application relates to land diesel hammer prefabricated pile construction measurement recording technical field, especially to a kind of based on laser ranging sensor's pile driving recorder, comprising: pile hammer, the pile hammer includes: hammer body and pile pad, the hammer body is set in the just above pile pad for reciprocating hammering pile pad, the pile pad is fixedly installed at the top of prefabricated pile, the hammer body and pile pad are respectively fixedly installed with reflector B and reflector A, the measuring component is fixed in ground by fixed component;The mobile data display device is provided with processor, the processor processes the data measured by laser ranging sensor A and laser ranging sensor B and real-time feedback processing result, whether the depth of prefabricated pile penetration soil layer is less than 30mm is judged every hammering, the present application can accurately and quickly judge whether to reach the standard of stopping hammer, reduce the error of artificial record, avoid that prefabricated pile is damaged by subjective factor of operator, reduce construction cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of land diesel hammer precast pile construction measurement and recording, and particularly relates to a piling recorder based on a laser ranging sensor. BACKGROUND

[0002] PHC precast pile foundation is a common form of land wind power foundation, which has the advantages of strong bearing capacity, high construction efficiency, energy saving and environmental protection, and is widely applicable to various environments. However, in the process of using diesel pile hammer to drive the precast pile into the soil layer, the hammering difficulty is different due to the influence of the stratum. The current 'Building Pile Foundation Technical Specification' JGJ-94-2008 stipulates that when the pile end is located in general soil, the pile end design elevation should be controlled as the main, and the penetration degree is auxiliary; when the pile end reaches hard, hard-plastic cohesive soil, medium-dense silt, sand and gravel soil and weathered rock, the penetration degree control should be the main, and the end elevation is auxiliary; when the penetration degree has reached the design requirement but the pile end elevation has not reached, the hammering should be continued for 3 times, and the penetration degree per vibration (10 times) should not be greater than the design value, and if necessary, the construction control penetration degree should be determined through test. Under normal circumstances, the penetration degree index determined by the standard should not be less than 30 mm per vibration (10 times).

[0003] For safety considerations, the construction personnel should be more than 5 m away from the pile hammer. At present, the construction personnel observes the depth of the precast pile into the soil layer by emitting laser from the precast pile body through the level, and feeds back to the operator of the diesel pile hammer. The standing quality inspector records the number of diesel hammer blows for 1 m of pipe pile into the soil. In the actual operation process, the observation feedback has certain subjectivity and timeliness, and the pile head may be broken due to the operator's factors, causing economic loss. SUMMARY

[0004] The present application aims to provide a piling recorder based on a laser ranging sensor to solve the technical problems in the background art.

[0005] To achieve the above-mentioned purpose, the technical scheme of the present application is as follows:

[0006] A kind of driving recorder based on laser ranging sensor, including: pile hammer, reflecting plate B, reflecting plate A, measuring component, fixed component, precast pile and mobile data display device, the pile hammer includes: hammer body and pile pad, the hammer body is arranged in the upper of pile pad for reciprocating hammering pile pad, the pile pad is fixedly installed at the top of precast pile, the precast pile is vertically arranged with soil layer;Hammer body and pile pad are fixedly installed with reflecting plate B and reflecting plate A respectively, the measuring component is fixed on ground by fixed component;The measuring component includes: measuring box, laser ranging sensor A and laser ranging sensor B, laser ranging sensor A and laser ranging sensor B are all arranged at the top of measuring box, the laser emission end of laser ranging sensor A and laser ranging sensor B is respectively opposite reflecting plate A and reflecting plate B, the data measured by laser ranging sensor A and laser ranging sensor B is transmitted to mobile data display device, processor is arranged in mobile data display device, the data measured by laser ranging sensor A and laser ranging sensor B is handled by processor and the processing result is fed back in real time, whether the depth of precast pile into soil layer is less than 30mm is judged every time hammering.

[0007] Further, the reflecting plate B includes: steel bar truss one and tinfoil one, the tinfoil one is fixedly connected at the outer side end of steel bar truss one, the inner side end of steel bar truss one is fixedly connected at the top end of hammer body, reflecting plate A includes: steel bar truss two and tinfoil two, the tinfoil two is fixedly connected at the outer side end of steel bar truss two, the inner side end of steel bar truss two is fixedly connected at the bottom end of pile pad.

[0008] Further, the area of tinfoil one and tinfoil two is 80mm x 80mm;The outer edge of tinfoil two is 800mm from the center of precast pile;The outer edge of tinfoil one is 1000mm from the center of precast pile.

[0009] Further, the measuring component further includes: bluetooth module, the bluetooth module is arranged in measuring box, the data measured by laser ranging sensor A and laser ranging sensor B is transmitted to mobile data display device by bluetooth module.

[0010] Further, the processing result fed back by the processor in real time includes: current hammering times, the depth of precast pile into soil layer of each hammering and the depth of precast pile into soil layer of second hammering.

[0011] Further, the mobile data display device is mobile phone or notebook computer.

[0012] Further, the fixing assembly comprises a support, welded steel pipes, floor spring shock absorbers, telescopic slide rails and circular arc steel plates, the measuring box is fixedly installed in the middle of the top of the support, support lugs are fixedly connected to the middle of the four ends of the front and back of the support, two welded steel pipes are vertically penetrated through and fixedly connected to the middle of the front and back two support lugs respectively, the two welded steel pipes are inserted into the soil layer respectively, the bottom ends of the left and right two support lugs are supported on the ground through two floor spring shock absorbers respectively, the two telescopic slide rails are symmetrically arranged on the left and right of the support, circular arc steel plates are fixedly connected to the left and right sides of the outer wall of the left telescopic end of the two telescopic slide rails respectively, the diameter of the inner wall of the circular arc steel plate is the same as the diameter of the precast pile, and the inner wall of the circular arc steel plate is tightly attached to the outer wall of the precast pile.

[0013] Further, the fixing assembly further comprises a rubber shock pad arranged between the measuring box and the support.

[0014] Further, the telescopic slide rail comprises a rail and a slide rod, an installation cavity is formed in the inside of the support, the rail is embeddedly installed in the installation cavity, the slide rod is slidingly connected to the rail along the length direction of the rail, and the rear end of the slide rod is fixedly connected to the outer wall of the circular arc steel plate.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] The present application measures the reflection distance of the bottom of the pile cushion and the top of the hammer body by means of the laser ranging sensors A and B respectively, transmits the data to external mobile data display devices such as mobile phones and notebook computers by means of the Bluetooth module, processes the data by means of the processor, and obtains the current number of hammering, the depth of the precast pile penetrating into the soil layer for each hammering, the depth of the precast pile penetrating into the soil layer for 10 hammerings (one vibration), and judges whether the depth of the precast pile penetrating into the soil layer for each vibration (10 hammerings) is less than 30 mm; the present application can accurately and quickly judge whether the standard of stopping hammering is reached, reduces the error of manual recording, avoids the subjective factors of the operator to cause the damage of the precast pile, and reduces the construction cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic diagram of the present application;

[0018] Figure 2 is a local enlarged view of the present application;

[0019] Figure 3 is a layout schematic diagram of the reflecting plate in the present application;

[0020] Figure 4 is a layout schematic diagram of the circular arc steel plate and the telescopic slide rail in the present application;

[0021] Figure 5 is a flow chart of the processor processing data in the present application.

[0022] The reference signs in the drawings are: 1-hammer body, 2-reflective plate B, 3-pile cushion, 4-reflective plate A, 5-laser ranging sensor A, 6-laser ranging sensor B, 7-rubber shock pad, 8-welded steel pipe, 9-floor spring shock absorber, 10-telescopic slide rail, 11-circular arc steel plate, 12-precast pile. DETAILED DESCRIPTION

[0023] The application will be further described in detail below in combination with the drawings and examples.

[0024] Referring to Figures 1-5 As shown in the drawings, a pile driving recorder based on laser ranging sensors comprises a pile hammer, a reflective plate B2, a reflective plate A4, a measuring assembly, a fixing assembly, a precast pile 12 and a mobile data display device. The pile hammer comprises a hammer body 1 and a pile cushion 3. The hammer body 1 is arranged directly above the pile cushion 3 for reciprocating hammering the pile cushion 3. The pile cushion 3 is fixedly installed at the top end of the precast pile 12. The precast pile 12 is arranged vertically with the soil layer. The hammer body 1 and the pile cushion 3 are respectively fixedly installed with the reflective plate B2 and the reflective plate A4. The measuring assembly is fixed to the ground through the fixing assembly. The measuring assembly comprises a measuring box, a laser ranging sensor A5 and a laser ranging sensor B6. The laser ranging sensor A5 and the laser ranging sensor B6 are both arranged at the top end of the measuring box. The laser emission ends of the laser ranging sensor A5 and the laser ranging sensor B6 are respectively directed to the reflective plate A4 and the reflective plate B2. The data measured by the laser ranging sensor A5 and the laser ranging sensor B6 is transmitted to the mobile data display device. A processor is arranged in the mobile data display device. The processor processes the data measured by the laser ranging sensor A5 and the laser ranging sensor B6 and feeds back the processing results in real time. It is determined whether the depth of the precast pile 12 penetrating into the soil layer is less than 30mm under each hammering.

[0025] The laser ranging sensors A and B record the real-time distance between the reflective plate at the bottom of the pile cushion and the distance sensor at the top of the hammer in real time. The reflective distance of the laser ranging sensor A at the i+1 moment is recorded as LAi+1, and the reflective distance of the laser ranging sensor A at the i moment is recorded as LAi. The reflective distance of the laser ranging sensor B at the i+1 moment is recorded as LBi+1, and the reflective distance of the laser ranging sensor B at the i moment is recorded as LBi. From the i moment to the i+1 moment, the height of the pile hammer and the pile cushion changes simultaneously. The height of the pile hammer changes is HBi=LBi-LBi+1-(LAi-LAi+1). The data at different moments is processed in real time by programming to obtain the final number of hammerings, the depth of the precast pile penetrating into the soil layer under each hammering, the depth of the precast pile penetrating into the soil layer under 10 hammerings (one vibration), and whether the depth of the precast pile penetrating into the soil layer under each vibration (10 hammerings) is less than 30mm. Figure 5 .

[0026] In the embodiment, the reflecting plate B2 comprises: a steel bar truss one and a tinfoil one, the tinfoil one is fixedly connected to the outer side end of the steel bar truss one, the inner side end of the steel bar truss one is fixedly connected to the top end of the hammer body 1, the reflecting plate A4 comprises: a steel bar truss two and a tinfoil two, the tinfoil two is fixedly connected to the outer side end of the steel bar truss two, the inner side end of the steel bar truss two is fixedly connected to the bottom end of the pile cushion 3; the area of the tinfoil one and the tinfoil two is 80mm*80mm; the outer edge of the tinfoil two is 800mm away from the center of the precast pile 12; the outer edge of the tinfoil one is 1000mm away from the center of the precast pile 12; the tinfoil one and the tinfoil two can reflect the laser emitted by the laser ranging sensor A5 and the laser ranging sensor B6.

[0027] In the embodiment, the measuring assembly further comprises: a Bluetooth module, the Bluetooth module is arranged inside the measuring box, the data measured by the laser ranging sensor A5 and the laser ranging sensor B6 is transmitted to the mobile data display device through the Bluetooth module.

[0028] In the embodiment, the processing result of the processor in real time feedback comprises: the current number of hammering, the depth of the precast pile 12 penetrating into the soil layer in each hammering and the depth of the precast pile 12 penetrating into the soil layer in 10 hammerings; further judging whether the depth of the precast pile 12 penetrating into the soil layer in each hammering is less than 30mm; the standard of stopping hammering can be accurately and quickly judged, the error of manual recording is reduced, the precast pile is prevented from being damaged due to subjective factors of the operator, and the construction cost is reduced.

[0029] In the embodiment, the mobile data display device is a mobile phone or a notebook computer, and the processor is a processor self-provided by the mobile phone or the notebook computer.

[0030] In the embodiment, the fixing assembly comprises: a support, welded steel pipes 8, floor spring shock absorbers 9, telescopic slide rails 10 and circular arc steel plates 11, the measuring box is fixedly installed at the middle part of the top end of the support, support lug plates are fixedly connected to the middle parts of the front and rear and left and right four ends of the support, two welded steel pipes 8 are vertically penetrated and fixedly connected to the middle parts of the front and rear two support lug plates respectively, the two welded steel pipes 8 are inserted into the soil layer respectively, the bottom ends of the left and right two support lug plates are supported on the ground through the two floor spring shock absorbers 9 respectively, the support is provided with two telescopic slide rails 10 symmetrically left and right, the outer wall left and right sides of each telescopic slide rail are fixedly connected with a circular arc steel plate 11 respectively, the inner wall diameter of the circular arc steel plate 11 is the same as the diameter of the precast pile 12, and the inner wall of the circular arc steel plate 11 is tightly combined with the outer wall of the precast pile 12; the fixing assembly further comprises: rubber shockproof pads 7, the rubber shockproof pads 7 are arranged between the measuring box and the support; the floor spring shock absorbers 9 and the rubber shockproof pads 7 are used to reduce the influence of piling vibration on the measuring instrument.

[0031] In the embodiment, the telescopic slide rail 10 comprises a track and a slide bar, the inside of the support is provided with a mounting cavity, the track is embeddedly mounted in the mounting cavity, the slide bar is slidingly connected to the track along the length direction of the track, and the rear end of the slide bar is fixedly connected to the outer wall of the arc steel plate 11; the arc steel plate 11 is placed against the front side of the precast pile 12, the position of the fixing assembly can be accurately positioned, the laser ranging sensor A5 and the laser ranging sensor B6 quickly correspond to the reflection plates at the bottom of the pile cushion and the top of the pile driver, and the arc steel plate 11 is separated from the precast pile 12 through the telescopic slide rail 10 before the pile driving starts, so that the influence of the pile driving vibration on the sensor is reduced.

[0032] Workflow:

[0033] 1. Fix the reflection plate A and the reflection plate B at the bottom of the pile cushion and the top of the hammer body of the pile driver respectively, the distance between the outer edges of the reflection plate A and the reflection plate B and the center point of the precast pile is 800 mm and 1000 mm respectively, and the size of the tinplate one and the tinplate two serving as the reflection plates is 80 mm*80 mm;

[0034] 2. Use hoisting equipment to vertically place the precast pile at the pile driving position, the arc steel plate is close to the front of the precast pile, the telescopic slide rail extends to the point 1000 mm away from the center point of the precast pile, the measuring assembly is accurately positioned, and the laser ranging sensor A and the laser ranging sensor B can accurately position the reflection plate A and the reflection plate B;

[0035] 3. Start the laser ranging sensor A and the laser ranging sensor B at the same time, open the mobile data display device, start real-time measurement and display data, and when the depth of the precast pile into the soil layer is less than 30 mm after 10 hammering is displayed, the oil of the pile driver should be controlled, the weight hammer is low, and the pile body quality is paid attention to;

[0036] 4. After the precast pile construction is completed, the instrument is pulled out of the soil layer, and then the rapid positioning is performed again after the positioning of the next precast pile is completed.

[0037] In the description of the present application, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0038] The above is only a preferred embodiment of the present application, and does not limit the present application in any form, any skilled person in the art can make any simple modification, equivalent replacement and improvement to the above embodiment according to the technical essence of the present application without departing from the technical solution range of the present application, and all of the above still belong to the protection range of the technical solution of the present application.

Claims

1. A laser ranging sensor based pile logger, characterized in that, It includes: The pile hammer, the reflecting plate B (2), the reflecting plate A (4), the measuring assembly, the fixing assembly, the prefabricated pile (12) and the mobile data display device, the pile hammer includes: the hammer body (1) and the pile cushion (3), the hammer body (1) is arranged on the top of the pile cushion (3) for reciprocating hammering the pile cushion (3), the pile cushion (3) is fixedly installed on the top end of the prefabricated pile (12), the prefabricated pile (12) is vertically arranged with the soil layer;The hammer body (1) and the pile cushion (3) are respectively fixedly installed with the reflecting plate B (2) and the reflecting plate A (4), the measuring assembly is fixed on the ground by the fixing assembly;The measuring assembly includes: the measuring box, laser ranging sensor A (5) and laser ranging sensor B (6), the laser ranging sensor A (5) and the laser ranging sensor B (6) are arranged on the top end of the measuring box, the laser emitting end of the laser ranging sensor A (5) and the laser ranging sensor B (6) respectively faces the reflecting plate A (4) and the reflecting plate B (2), the data measured by the laser ranging sensor A (5) and the laser ranging sensor B (6) is transmitted to the mobile data display device, the mobile data display device is provided with a processor, the processor processes the data measured by the laser ranging sensor A (5) and the laser ranging sensor B (6) and feeds back the processing result in real time, the processor obtains the depth of the prefabricated pile (12) penetrating into the soil layer under each hammering by the data measured by the laser ranging sensor A (5), judges whether it is a time of hammering by the data measured by the laser ranging sensor B (6) and records the number of hammering, judges whether the depth of the prefabricated pile (12) penetrating into the soil layer under each hammering is less than 30mm; The fixing assembly includes: the support, the welded steel pipe (8), the floor spring shock absorber (9), the telescopic slide rail (10) and the circular arc steel plate (11), the measuring box is fixedly installed on the top middle part of the support, the support is fixedly connected with the support lug plate in the middle part of the front, rear, left and right four ends, two welded steel pipes (8) are vertically penetrated and fixedly connected with the middle part of the front and rear two support lug plates respectively, the two welded steel pipes (8) are inserted into the soil layer respectively, the bottom ends of the left and right two support lug plates are supported on the ground through two floor spring shock absorbers (9) respectively, the support is provided with two telescopic slide rails (10) symmetrically on the left and right, the outer wall left and right sides of the circular arc steel plate (11) are fixedly connected with the left side telescopic ends of the two telescopic slide rails respectively, the diameter of the inner wall of the circular arc steel plate (11) is the same as the diameter of the prefabricated pile (12), the inner wall of the circular arc steel plate (11) is closely combined with the outer wall of the prefabricated pile (12).

2. A laser ranging sensor based pile logging apparatus as claimed in claim 1, wherein: The reflecting plate B (2) includes: steel bar truss one and white iron skin one, the white iron skin one is fixedly connected with the outer side end of the steel bar truss one, the inner side end of the steel bar truss one is fixedly connected with the top end of the hammer body (1), the reflecting plate A (4) includes: steel bar truss two and white iron skin two, the white iron skin two is fixedly connected with the outer side end of the steel bar truss two, the inner side end of the steel bar truss two is fixedly connected with the bottom end of the pile cushion (3).

3. A laser ranging sensor based pile logging apparatus as claimed in claim 2, wherein: The area of the tinplate one and the tinplate two is 80mm*80mm; the outer edge of the tinplate two is 800mm away from the center of the prefabricated pile (12); the outer edge of the tinplate one is 1000mm away from the center of the prefabricated pile (12).

4. A laser ranging sensor based pile driving recorder according to claim 1, characterized in that: The measuring assembly further comprises a Bluetooth module arranged inside the measuring box, and data measured by the laser ranging sensor A (5) and the laser ranging sensor B (6) is transmitted to the mobile data display device through the Bluetooth module.

5. A laser ranging sensor based pile driving recorder according to claim 1, characterized in that: The processing result of the processor in real time feedback comprises the current number of hammering, the depth of the prefabricated pile (12) penetrating into the soil layer per hammering, and the depth of the prefabricated pile (12) penetrating into the soil layer for 10 times of hammering.

6. A laser ranging sensor based pile logging apparatus as claimed in claim 1, wherein: The mobile data display device is a mobile phone or a notebook computer.

7. A laser ranging sensor based pile driving recorder according to claim 1, characterized in that: The fixing assembly further comprises a rubber shock pad (7) arranged between the measuring box and the support.

8. A laser ranging sensor based pile driving recorder according to claim 1, characterized in that: The telescopic slide rail (10) comprises a rail and a slide bar, the support is internally provided with a mounting cavity, the rail is embeddedly mounted in the mounting cavity, and the slide bar is slidingly connected to the rail along the length direction of the rail, and the rear end of the slide bar is fixedly connected to the outer wall of the circular arc steel plate (11).

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