A quality detection device and method for spiral pile core rigid composite pile

Abstract

The present invention relates to the field of rigid composite pile quality detection equipment, and in particular to a device and method for detecting the quality of a rigid composite pile with a spiral pile core. Aiming at the problem in the prior art that a device is needed to help construction personnel detect the bearing capacity of a rigid composite pile with a spiral pile core in a strong corrosive marine soft soil environment for a long time, a device and method for detecting the quality of a rigid composite pile with a spiral pile core are provided. Four shaping plates distributed in a rectangular shape are installed on the upper end of a support seat, and a control component for fixing the shaping plates is installed on the bottom of the support seat; a telescopic plate that can be raised and lowered is installed on the upper end of the support seat, and a clamping structure is rotatably connected to the front end of the telescopic plate. When in use, the device can directly provide vertical pressure and horizontal pressure to a model spiral pile core through an elastic telescopic rod, detect the vertical bearing capacity and horizontal bearing capacity of the spiral pile core in a simulated environment, and facilitate the operator to collect data for evaluation.

Description

Technical Field

[0001] The invention relates to the field of rigid composite pile quality detection equipment, and in particular to a device and method for detecting the quality of a rigid composite pile with a spiral pile core. Background Art

[0002] The spiral core rigid composite pile is different from the commonly used rigid composite pile. The spiral core rigid composite pile is constructed by synchronously constructing a rigid spiral pile and a flexible cement soil pile at one time. The pile-making process parameters such as grouting pressure and flow, drilling speed, nozzle design position, blade diameter and number will affect the physical and mechanical properties of the double-layer contact surface of the steel pipe, cement soil and soft soil, so the force mechanism of the pile foundation under load is more complicated; due to seawater intrusion and other reasons, the marine soft soil has different degrees of corrosiveness. Long-term corrosion may cause the cement soil column of the spiral core rigid composite pile to have mechanical properties deterioration due to erosion, thereby affecting the long-term bearing performance of the pile foundation. However, the intrinsic relationship and mechanism between the degradation of the mechanical properties of cement soil and the degradation of the long-term bearing capacity of the pile foundation are still unclear. Therefore, there is an urgent need for a device that can help construction personnel detect the bearing capacity of the spiral core rigid composite pile in a highly corrosive marine soft soil environment for a long time. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a quality detection device and method for a spiral pile core rigid composite pile, which effectively solves the problems mentioned in the above background technology.

[0004] In order to solve the above problems, the technical solution adopted by the present invention is:

[0005] A spiral pile core rigid composite pile quality inspection device comprises a bottom plate, the upper end of the bottom plate is fixedly connected to a support seat, the upper end of the support seat is equipped with four rectangularly distributed shaping plates, and the bottom of the support seat is equipped with a control component for fixing the shaping plates; the upper end of the support seat is equipped with a telescopic plate that can be raised and lowered, the front end of the telescopic plate is rotatably connected to a clamping structure, and when the clamping structure rotates, a structure for lifting and lowering the telescopic plate is formed;

[0006] An elastic telescopic rod is clamped and fixed on the inner side of the clamping structure. An elastic component is installed inside the elastic telescopic rod to provide resistance to the contraction of the elastic telescopic rod. A test plate is slidably connected to the bottom of the elastic telescopic rod, and the test plate can move radially at the bottom of the elastic telescopic rod.

[0007] Furthermore, the inner end of each shaping plate is slidably connected to the surface of the corresponding shaping plate along the length, and the inner end of each shaping plate is provided with a strip groove toward the outside along the length direction, and the inner side of the strip groove is slidably matched with a baffle plate horizontally arranged with the support seat.

[0008] Furthermore, the control component includes connecting sliders which are slidably connected to the upper ends of the shaping plates along the length directions of the shaping plates, the upper ends of the connecting sliders are respectively hinged with connecting rods, the two ends of the connecting rods extend to the lower ends of the base and the connecting rods located at the lower ends of the base are respectively slidably connected to the bottom of the base, a cross is rotatably connected to the middle position of the bottom of the base, the outer ends of the cross are respectively hinged with hinged rods, the other ends of the hinged rods are respectively hinged to the inner ends of the connecting rods, a worm gear is coaxially fixedly connected to the middle part of the lower end of the cross, a worm is meshed with one side of the worm gear, the worm is rotatably connected to the surface of the base, and one end of the worm is fixedly connected to a handle.

[0009] Furthermore, a threaded rod and a limiting rod are fixedly connected to the rear side of the base plate, the rear end of the telescopic plate is axially slidably connected to the limiting rod, and a threaded sleeve is rotatably connected to the surface of the telescopic plate corresponding to the threaded rod. The threaded sleeve is threadedly connected to the threaded rod, and when the threaded sleeve rotates, the telescopic plate is driven to rise and fall under the action of the threaded connection between the threaded sleeve and the threaded rod. A transmission structure is connected between the threaded sleeve and the clamping structure, and the threaded sleeve is synchronously driven to rotate when the clamping structure rotates.

[0010] Furthermore, the clamping structure includes a mounting plate rotatably connected to the front end of the telescopic plate, a mounting hole is opened in the middle of the mounting plate, a plurality of clamping plates are evenly distributed in a ring shape on the inner side of the mounting hole, the outer ends of the clamping plates are respectively fixedly connected with clamping sliders, a plurality of connecting grooves are respectively opened in the radial direction at the bottom of the mounting plate, the clamping sliders are respectively slidably connected to the connecting grooves, the bottoms of the clamping sliders are respectively fixedly connected with connecting pin shafts, the bottom of the mounting plate is rotatably connected with a unidirectional rotating guide plate, the outer side of the surface of the guide plate is opened in a ring shape with inclined grooves equal to the number of the connecting pin shafts, and the connecting pin shafts are respectively slidably matched with the inclined grooves.

[0011] Furthermore, an arc-shaped ratchet bar is fixedly connected to the outer side of the surface of the guide plate, a ratchet pawl is meshed on one side of the arc-shaped ratchet bar, the other end of the ratchet pawl is rotatably connected to the mounting plate, a spring plate is provided on one side of the ratchet pawl, and the end of the spring plate away from the ratchet pawl is fixedly connected to the mounting plate, and under the meshing of the ratchet pawl and the arc-shaped ratchet bar, the guide plate can only move in the direction of controlling the clamping plate to move inward.

[0012] Furthermore, the transmission structure includes a spline cylinder and a spline shaft which are spline-connected to each other, the spline cylinder is rotatably connected to one end of the telescopic plate that undergoes displacement, the spline shaft is rotatably connected to the other end of the telescopic plate, the upper ends of the mounting plates are coaxially fixedly connected with matching gears, a first connecting gear is meshed on the rear side of the matching gear, the first connecting gear is rotatably connected to the end of the telescopic plate that undergoes displacement, a first reversing bevel gear is coaxially fixedly connected to the upper end of the first connecting gear, a second reversing bevel gear is meshed on the upper side of the first reversing bevel gear, and the second reversing bevel gear is coaxially fixedly connected to the spline cylinder.

[0013] The present invention has novel structure, ingenious design, simple and convenient operation, and has the following advantages compared with the prior art:

[0014] 1. When in use, the device can control the shaping plate to synchronously move the designated model soil block of the simulated test soil density, and the size can be adjusted as needed, which is convenient for testing the vertical and horizontal bearing capacity of the spiral pile core in the test soil, and has a wide range of applications;

[0015] 2. When using this device, the model spiral pile core can be specified according to the needs, and the drilling and pouring can be formed in one time. The operation is simple and convenient, which is conducive to the smooth progress of the detection work and improves the work efficiency;

[0016] 3. When in use, the device can directly provide vertical and horizontal pressures to the model spiral pile core through the elastic telescopic rod, detect the vertical and horizontal bearing capacities of the spiral pile core in the simulated environment, and facilitate the operator to collect data for evaluation. The operation is simple and convenient, and the functions are diverse. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a first schematic diagram of the overall structure of a device for detecting quality of a spiral pile core rigid composite pile according to the present invention.

[0018] Figure 2 It is a second schematic diagram of the overall structure of a quality detection device for a spiral pile core rigid composite pile according to the present invention.

[0019] Figure 3 It is a schematic diagram of the installation structure of a shaping plate of a spiral pile core rigid composite pile quality detection device of the present invention.

[0020] Figure 4 Schematic diagram of the installation structure of the shaping plate of the spiral pile core rigid composite pile quality detection device of the present invention

[0021] Figure 5 The present invention is a schematic diagram of the installation structure of a telescopic plate of a spiral pile core rigid composite pile quality detection device.

[0022] Figure 6 It is a first schematic diagram of the control component structure of a spiral pile core rigid composite pile quality detection device of the present invention.

[0023] Figure 7 It is a second schematic diagram of the control component structure of a spiral pile core rigid composite pile quality detection device of the present invention.

[0024] Figure 8 It is a schematic diagram of the lifting structure of the telescopic plate of a spiral pile core rigid composite pile quality detection device of the present invention.

[0025] Fig. 9 It is a schematic diagram of the transmission structure of a device for detecting quality of a spiral pile core rigid composite pile according to the present invention.

[0026] Fig.10 It is a first schematic diagram of the clamping structure of a spiral pile core rigid composite pile quality detection device of the present invention.

[0027] Fig.11 It is a second schematic diagram of the clamping structure of a device for detecting quality of a spiral pile core rigid composite pile according to the present invention.

[0028] Fig.12 It is a first schematic diagram of the elastic telescopic rod structure of a spiral pile core rigid composite pile quality detection device of the present invention.

[0029] Fig.13 It is a second schematic diagram of the elastic telescopic rod structure of a spiral pile core rigid composite pile quality detection device of the present invention.

[0030] Fig.14 The present invention is a schematic diagram of the test plate installation structure of a spiral pile core rigid composite pile quality detection device.

[0031] Numbers in the figure: 1-base plate, 2-support seat, 3-baffle, 4-shaping plate, 5-connecting slider, 6-strip groove, 7-connecting rod, 8-first mounting plate, 9-second mounting plate, 10-mounting slider, 11-fixing bolt, 12-cross, 13-hinge rod, 14-handle, 15-worm gear, 16-worm, 17-limiting rod, 18-threaded rod, 19-threaded sleeve, 20-mounting plate, 21-matching gear, 22-first connecting gear, 23-first reversing bevel gear, 24-second reversing bevel gear, 25-spline cylinder, 26-spline shaft, 27-driving bevel gear, 28-first Three reversing bevel gears, 29-fourth reversing bevel gear, 30-second connecting gear, 31-internal gear, 32-motor, 33-clamping plate, 34-clamping slider, 35-screw rod, 36-guide plate, 37-bevel groove, 38-connecting pin, 39-arc ratchet bar, 40-ratchet claw, 41-spring plate, 42-test cylinder, 43-test rod, 44-test plate, 45-adjusting slider, 46-fixing screw, 47-fixing plate, 49-pressure spring, 50-pressure plate, 51-connecting block, 52-pressure screw, 53-pressure knob, 54-adjusting slide groove, 55-limit push plate. DETAILED DESCRIPTION

[0032] The following are specific embodiments of the present invention, and the technical solutions of the present invention are further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0033] like Figure 1-14As shown, the present invention provides a quality detection device for a spiral pile core rigid composite pile, comprising a base plate 1, the upper end of the base plate 1 is fixedly connected to a support seat 2, the upper end of the support seat 2 is equipped with four rectangularly distributed shaping plates 4, the shaping plates 4 are used to shape the model soil block when making the model soil block, and a soil density sensor can be arranged on the inner side of the shaping plate to detect the density of the manufactured model soil block, so as to facilitate the manufacture of the model soil block with the required density, and the soil blocks of different sizes can be manufactured by controlling the displacement of the shaping plates 4, and a control component for fixing the shaping plates 4 is installed at the bottom of the support seat 2, and the shaping plates 4 are controlled to move by the control component to test the soil pressure and fix the shaping plates 4; a telescopic plate that can be raised and lowered is installed at the upper end of the support seat 2, and the front end of the telescopic plate is rotatably connected to a clamping structure, and the position of the clamping structure can be controlled by the telescopic plate, and a structure for lifting and lowering the telescopic plate is formed when the clamping structure rotates;

[0034] An elastic telescopic rod is fixedly clamped on the inner side of the clamping structure, and an elastic component is installed inside the elastic telescopic rod to provide resistance to the contraction of the elastic telescopic rod. The elastic component is used to provide resistance when the elastic telescopic rod contracts. A test plate 44 is slidably connected to the bottom of the elastic telescopic rod. When the clamping structure moves downward, the test plate 44 can be pressed against the upper end of the manufactured spiral pile core to test the spiral pile core. The elastic component can be used for resistance, and then the axial bearing capacity effect of the spiral pile core can be tested. The test plate 44 can move radially at the bottom of the elastic telescopic rod to detect the horizontal bearing capacity of the spiral pile core; Figure 2 As shown, the screw rod 35 can be clamped and fixed by the clamping structure, and the screw rod 35 can be driven to rotate by the rotation of the clamping structure, and then the screw rod 35 is used to punch holes during the downward movement of the telescopic plate, so as to facilitate the production of the spiral pile core for testing.

[0035] like Figure 3 As shown, the inner end of each shaping plate 4 is respectively connected to the surface of the corresponding shaping plate 4 in a sliding manner along the length, so that the four shaping plates 4 are connected to each other and cannot be separated and can be moved synchronously inward and outward, so as to facilitate the adjustment of the inner volume. The inner end of each shaping plate 4 is respectively provided with a strip groove 6 along the length direction toward the outside, and the inner side of the strip groove 6 is slidably matched with a baffle plate 3 horizontally arranged with the support seat 2, and the baffle plate 3 is used to block the soil when pressurizing the soil, so as to improve the pressurization effect of the soil.

[0036] The control component includes connecting sliders 5 that are respectively connected to the upper end of the shaping plate 4 in a sliding manner along the length direction of the shaping plate 4, and the upper ends of the connecting sliders 5 are respectively hinged with connecting rods 7. The two ends of the connecting rods 7 extend to the lower end of the base, and the connecting rods 7 located at the lower end of the base are respectively slidably connected to the bottom of the base. A cross 12 is rotatably connected to the middle position of the bottom of the base, and the outer ends of the cross 12 are respectively hinged with hinged rods 13, and the other ends of the hinged rods 13 are respectively hinged with the inner ends of the connecting rods 7. A worm gear 15 is coaxially fixedly connected to the middle of the lower end of the cross 12, and a worm 16 is meshed on one side of the worm gear 15. The worm 16 is meshed with the worm 16. 6 is rotatably connected to the surface of the base, and one end of the worm 16 is fixedly connected to a handle 14, which is used to control the shaping plate 4 to move inward. When the handle 14 rotates, the cross 12 can be driven to rotate through the engagement of the worm 16 and the worm wheel 15. When the cross 12 rotates, the connecting rod 7 can be driven to move inward synchronously through the linkage of the hinge rod 13, and the four shaping plates 4 can be driven to slide inward synchronously under the push of the sliding block. The shaping plates 4 are concentrated when moving inward, which has the effect of pressurizing the soil, and the worm wheel 15 and worm 16 have a self-locking effect during transmission to ensure the stability of the shaping plates 4.

[0037] A threaded rod 18 and a limiting rod 17 are fixedly connected to the rear side of the base plate 1, and the rear end of the telescopic plate is axially slidably connected to the limiting rod 17. A threaded sleeve 19 is rotatably connected to the surface of the telescopic plate corresponding to the threaded rod 18. The threaded sleeve 19 is threadedly connected to the threaded rod 18. When the threaded sleeve 19 rotates, the telescopic plate is driven to rise and fall under the action of the threaded connection between the threaded sleeve 19 and the threaded rod 18. A transmission structure is connected between the threaded sleeve 19 and the clamping structure, and when the clamping structure rotates, the threaded sleeve 19 is synchronously driven to rotate, and when the threaded sleeve 19 rotates, the lifting plate can be driven to rise and fall.

[0038] The clamping structure includes a mounting plate 20 rotatably connected to the front end of the telescopic plate, a mounting hole is provided in the middle of the mounting plate 20, a plurality of clamping plates 33 are evenly distributed in an annular shape on the inner side of the mounting hole, the inner ends of the clamping plates 33 are respectively provided with transversely arranged anti-slip grooves for improving the fixing effect of the clamping plates 33, the outer ends of the clamping plates 33 are respectively fixedly connected with clamping sliders 34, the bottom of the mounting plate 20 is respectively provided with a plurality of connecting slide grooves in the radial direction, the clamping sliders 34 are respectively slidably connected with the connecting slide grooves, so that the clamping plates 33 The object can be stably clamped and fixed along the radial movement of the mounting plate 20. The bottom of the clamping slider 34 is fixedly connected with a connecting pin 38. The bottom of the mounting plate 20 is rotatably connected with a unidirectionally rotating guide plate 36. The outer surface of the guide plate 36 is annularly provided with an equal number of inclined grooves 37 as the connecting pins 38. The connecting pins 38 are respectively slidably matched with the inclined grooves 37. When the guide plate 36 rotates, the clamping plate 33 can be driven to move inwards through the sliding cooperation between the inclined grooves 37 and the connecting pins 38.

[0039] An arcuate ratchet bar 39 is fixedly connected to the outer side of the surface of the guide plate 36, and a ratchet pawl 40 is meshed on one side of the arcuate ratchet bar 39. The other end of the ratchet pawl 40 is rotatably connected to the mounting plate 20. A spring plate 41 is provided on one side of the ratchet pawl 40. The spring plate 41 pushes the ratchet pawl 40 to mesh with the arcuate ratchet bar 39 through its own elastic force to brake the guide plate 36. The end of the spring plate 41 away from the ratchet pawl 40 is fixedly connected to the mounting plate 20. When the ratchet pawl 40 and the arcuate ratchet bar 39 are connected, the spring plate 41 is fixedly connected to the mounting plate 20. Under the meshing, the guide plate 36 can only move in the direction of controlling the clamping plate 33 to move inward, thereby effectively improving the fixing effect of the clamping plate 33 on the object. An auxiliary plate is fixedly connected to the end of the ratchet claw 40 away from the arc-shaped ratchet bar 39, which is used to assist the user in controlling the ratchet claw 40 to swing to the side away from the arc-shaped rod ratchet bar, so that the ratchet claw 40 is disengaged from the arc-shaped ratchet bar 39, and the guide plate 36 moves outward to drive the clamping plate 33 to move, thereby facilitating the replacement of the object clamped by the clamping plate 33.

[0040] The telescopic plate includes a first mounting plate 8 and a second mounting plate 9 which are slidably connected to each other. A mounting groove is provided at the upper end of the first mounting plate 8 along the length direction. A mounting slider 10 is fixedly connected to the rear side of the lower end of the second mounting plate 9. The mounting slider 10 is slidably connected to the mounting groove. A fixing bolt 11 is threadedly connected to the lower end of the mounting slider 10. The first mounting plate 8 and the second mounting plate 9 can be fixed by rotating the fixing bolt 11 to strengthen the friction with the first mounting plate. The mounting plate 20 is rotatably connected to the front end of the second mounting plate 9. The limiting rod 17 is slidably connected to the rear end of the first mounting plate 8. The first mounting plate 8 serves as the end that does not displace, and the second mounting plate 9 serves as the end that displaces. The transmission structure includes spline cylinders which are spline-connected to each other. 25 and spline shaft 26, the spline cylinder 25 is rotatably connected to one end of the telescopic plate for displacement, and the spline shaft 26 is rotatably connected to the other end of the telescopic plate. Under the action of the spline connection between the spline cylinder 25 and the spline shaft 26, the telescopic plate can not only drive the clamping structure to telescope, but also does not affect the rotation. The upper end of the mounting plate 20 is respectively coaxially fixedly connected with a matching gear 21, and the rear side of the matching gear 21 is meshed with a first connecting gear 22, and the first connecting gear 22 is rotatably connected to the end of the telescopic plate for displacement. The upper end of the first connecting gear 22 is coaxially fixedly connected with a first reversing bevel gear 23, and the upper side of the first reversing bevel gear 23 is meshed with a second reversing bevel gear 24, and the second reversing bevel gear 24 is coaxially fixedly connected with the spline cylinder 25;

[0041] The upper end of the threaded sleeve 19 is coaxially fixedly connected to an internal gear 31, and a second connecting gear 30 is meshed on the inner side of the internal gear 31. The second connecting gear 30 is rotatably connected to the end of the telescopic plate that does not displace. The upper side of the second connecting gear 30 is coaxially fixedly connected to a fourth reversing bevel gear 29, and the front side of the fourth reversing bevel gear 29 is meshed with a third reversing bevel gear 28. The third reversing bevel gear 28 is coaxially fixedly connected to the spline shaft 26, and the front side of the third reversing bevel gear 28 is coaxially fixedly connected to a driving bevel gear 27, and the lower side of the driving bevel gear 27 is meshed with an active bevel gear, and a motor 32 is provided on the lower side of the active bevel gear, and the power output end of the motor 32 is coaxially fixedly connected to the active bevel gear, and the motor 32 is fixed to the lower end of the first mounting plate 8, and the driving bevel gear 27 is rotatably connected to the lower end of the first mounting plate 8 When the motor 32 rotates, the active bevel gear can be driven to rotate, and the spline shaft 26 can be driven to rotate through the meshing of the active bevel gear and the driving bevel gear 27, and the second reversing bevel gear 24 can be driven to rotate through the transmission of the spline shaft 26 and the spline cylinder 25. The mounting plate 20 is driven to rotate under the meshing and transmission of the second reversing bevel gear 24, the first reversing bevel gear 23, the first connecting gear 22 and the matching gear 21, and then the second connecting gear 30 is driven to rotate under the meshing and transmission of the third reversing bevel gear 28 and the fourth reversing bevel gear 29, and the threaded sleeve 19 is driven to rotate under the meshing of the second connecting gear 30 and the internal gear 31, so as to realize the lifting and lowering of the telescopic plate, and the transmission of the second connecting gear 30 and the internal gear 31 belongs to the reduction transmission, so that the telescopic plate can be lifted and lowered slowly, and the telescopic plate is prevented from descending too fast to affect the detection effect and the hole turning quality.

[0042] The elastic telescopic rod includes a test tube 42 and a test rod 43 slidably connected to the lower side of the test tube 42. The upper end of the test rod 43 is coaxially fixedly connected to a limited push plate 55. The limited push plate 55 is axially slidably connected to the inner side of the test tube 42. A plurality of protrusions are provided on the circumferential surface of the limited push plate 55. A plurality of grooves are provided on the inner wall of the test tube 42 along the axial direction. The protrusions and the grooves are slidably matched, so that the test rod 43 can only move axially, and the test tube 42 and the test rod 43 have a transmission effect, which can drive the test plate to rotate. The elastic component includes a pressure spring 49 located inside the test tube 42. The pressure spring 49 is located on the upper side of the limited push plate 55. When the telescopic plate moves downward, the test plate 44 presses the spiral pile core. In the process of continuous downward movement of the telescopic plate, the displacement distance of the test rod 43 and the settlement data of the spiral pile core can be observed. The deformation modulus of the soil layer is used to calculate the same depth flat plate load test, and the axial bearing capacity of the spiral pile core is calculated, and then it is proportionally enlarged to obtain the actual detection data; the upper end of the pressure spring 49 is fixedly connected to a The outer end of the connecting block 51 is threadedly connected with a pressurizing screw 52 arranged along the axial direction of the test tube 42. The two ends of the pressurizing screw 52 are respectively rotatably connected to the surface of the test tube 42. The lower end of the pressurizing screw 52 is fixedly connected with a pressurizing knob 53. The pressurizing knob 53 is used to increase the resistance that the pressure spring 49 can provide. The pressurizing screw 52 is rotated by rotating the pressurizing knob 53. Under the action of the threaded connection between the pressurizing screw 52 and the connecting block 51, the connecting block 51 is driven to move downward to squeeze the pressure spring 49, thereby increasing the pre-pressure and putting the pressure spring 49 in a compressed state. Then, when the test rod 43 pushes the pressure spring 49 to move upward, a higher thrust is required, and the corresponding pressure applied to the spiral pile core will become larger, so that it can be adjusted according to the actual needs during detection.

[0043] An adjusting slot 54 is radially provided at the upper end of the test plate 44, and an adjusting slider 45 is fixedly connected to the bottom of the test rod 43. The adjusting slider 45 is slidably connected to the adjusting slot 54 to ensure stable movement of the test plate 44. A vertically arranged fixing screw 46 is threadedly connected to the bottom of the test rod 43, and a fixing plate 47 is fixedly connected to the bottom of the fixing screw 46. The fixing screw 46 can be driven to rotate by rotating the fixing plate 47, thereby fixing the test plate 44, thereby increasing the friction of the test plate 44 on the upper end of the spiral pile core, and improving the detection effect of the horizontal bearing capacity of the spiral pile core.

[0044] A method for detecting the quality of a spiral pile core rigid composite pile comprises the following steps:

[0045] S1. Select the test soil, pour the selected soil into the inner side of the shaping plate 4, insert the baffle plate 3 into the strip groove 6 between the shaping plates 4, turn the handle 14 to control the shaping plate 4 to move inward, compact the soil to form a soil block according to the data proportionally reduced by the selected soil density, reverse the handle 14 to control the shaping plate 4 to move outward, remove the baffle plate 3, and control the shaping plate 4 to move inward again to fit the soil block;

[0046] S2, select the hollow screw rod 35, clamp the hollow screw rod 35 through the clamping structure, connect the upper end of the hollow screw rod to the concrete pouring equipment, control the movement of the telescopic plate, and move the hollow screw rod 35 to the top of the soil block;

[0047] S3, start the motor 32, control the hollow spiral rod 35 to rotate and move downward to open a hole in the soil block through the clamping structure, release the clamping fixation of the spiral rod 35 after the spiral rod 35 rotates into the soil block, control the motor 32 to reverse and make the telescopic plate rise, start the concrete pouring equipment to grout the hole, and wait for solidification to form a spiral pile core;

[0048] S4, clamp and fix the test tube 42 by the clamping structure, set the test plate 44 and the spiral pile core coaxially, start the motor 32, control the motor 32 to rotate to move the test tube 42 downward, pressurize the spiral pile core through the test plate 44, and record the pressure generated during the axial displacement of the test rod 43 and the settlement data generated by the spiral pile core;

[0049] S5. Control the test plate 44 to move radially to one side so as not to correspond coaxially with the spiral pile core. Start the motor 32 to drive the test rod 43 to move downward so that the test plate 44 rotates eccentrically while pressing the spiral pile core while moving downward. Record the pressure generated during the axial displacement of the test rod 43 and the radial displacement data of the spiral pile core generated during the eccentric rotation of the test plate 44.

[0050] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways.

Claims

1. A quality inspection device for a spiral pile core rigid composite pile, comprising a bottom plate (1), characterized in that: The upper end of the base plate (1) is fixedly connected to a support seat (2), the upper end of the support seat (2) is equipped with four rectangularly distributed shaping plates (4), and the bottom of the support seat (2) is equipped with a control component for fixing the shaping plates (4); the upper end of the support seat (2) is equipped with a telescopic plate that can be raised and lowered, the front end of the telescopic plate is rotatably connected to a clamping structure, and when the clamping structure rotates, a structure is formed in which the telescopic plate is raised and lowered; A threaded rod (18) and a limiting rod (17) are fixedly connected to the rear side of the base plate (1), respectively; the rear end of the telescopic plate is axially slidably connected to the limiting rod (17); a threaded sleeve (19) is rotatably connected to the surface of the telescopic plate corresponding to the threaded rod (18); the threaded sleeve (19) is threadedly connected to the threaded rod (18); when the threaded sleeve (19) rotates, the telescopic plate is driven to rise and fall under the action of the threaded connection between the threaded sleeve (19) and the threaded rod (18); a transmission structure is connected between the threaded sleeve (19) and the clamping structure; when the clamping structure rotates, the threaded sleeve (19) is synchronously driven to rotate; The transmission structure comprises a spline cylinder (25) and a spline shaft (26) which are spline-connected to each other. The spline cylinder (25) is rotationally connected to one end of the telescopic plate for displacement. The spline shaft (26) is rotationally connected to the other end of the telescopic plate. The upper ends of the mounting plates (20) are coaxially fixedly connected to matching gears (21). A first connecting gear (22) is meshed at the rear side of the matching gear (21). The first connecting gear (22) is rotationally connected to the end of the telescopic plate for displacement. A first reversing bevel gear (23) is coaxially fixedly connected to the upper end of the first connecting gear (22). A second reversing bevel gear (24) is meshed at the upper side of the first reversing bevel gear (23). The second reversing bevel gear (24) is coaxially fixedly connected to the spline cylinder (25).

2. A spiral pile core rigid composite pile quality detection device as claimed in claim 1, characterized in that: An elastic telescopic rod is clamped and fixed inside the clamping structure, an elastic component providing resistance to the contraction of the elastic telescopic rod is installed inside the elastic telescopic rod, and a test plate (44) is slidably connected to the bottom of the elastic telescopic rod, and the test plate (44) can move radially at the bottom of the elastic telescopic rod.

3. A spiral pile core rigid composite pile quality detection device as claimed in claim 2, characterized in that: The inner end of each shaping plate (4) is respectively connected to the surface of the corresponding shaping plate (4) in a sliding manner along the length, and the inner end of each shaping plate (4) is respectively provided with a strip groove (6) toward the outside along the length direction, and the inner side of the strip groove (6) is slidably matched with a baffle (3) arranged horizontally with the support seat (2).

4. A spiral pile core rigid composite pile quality detection device as claimed in claim 3, characterized in that: The control component comprises connecting sliders (5) respectively connected to the upper end of the shaping plate (4) in a sliding manner along the length direction of the shaping plate (4), the upper ends of the connecting sliders (5) are respectively hinged with connecting rods (7), both ends of the connecting rods (7) extend to the lower end of the base and the connecting rods (7) located at the lower end of the base are respectively connected to the bottom of the base in a sliding manner, and a cross (12) is rotatably connected to the middle position of the bottom of the base.

5. A quality detection device for spiral pile core rigid composite piles as claimed in claim 4, characterized in that: The outer ends of the cross (12) are respectively hinged with hinge rods (13), and the other ends of the hinge rods (13) are respectively hinged with the inner ends of the connecting rods (7). A worm gear (15) is coaxially fixedly connected to the middle of the lower end of the cross (12), and a worm (16) is meshed on one side of the worm gear (15). The worm (16) is rotatably connected to the surface of the base, and one end of the worm (16) is fixedly connected to a handle (14).

6. A quality inspection device for spiral pile core rigid composite piles as claimed in claim 5, characterized in that: The clamping structure comprises a mounting plate (20) rotatably connected to the front end of the telescopic plate, a mounting hole is provided in the middle of the mounting plate (20), a plurality of clamping plates (33) are evenly distributed in a ring shape on the inner side of the mounting hole, the outer ends of the clamping plates (33) are respectively fixedly connected to clamping slide blocks (34), a plurality of connecting slide grooves are respectively provided in the radial direction at the bottom of the mounting plate (20), and the clamping slide blocks (34) are respectively slidably connected to the connecting slide grooves.

7. A quality inspection device for spiral pile core rigid composite piles as claimed in claim 6, characterized in that: The bottom of the clamping slider (34) is fixedly connected to a connecting pin (38), and the bottom of the mounting plate (20) is rotatably connected to a unidirectionally rotatable guide plate (36). The outer surface of the guide plate (36) is provided with an annular oblique groove (37) equal in number to the connecting pin (38), and the connecting pin (38) is slidably matched with the oblique groove (37).

8. A quality inspection device for spiral pile core rigid composite piles as claimed in claim 7, characterized in that: An arcuate ratchet bar (39) is fixedly connected to the outer surface of the guide plate (36), a ratchet pawl (40) is meshed on one side of the arcuate ratchet bar (39), the other end of the ratchet pawl (40) is rotatably connected to the mounting plate (20), a spring plate (41) is provided on one side of the ratchet pawl (40), the end of the spring plate (41) away from the ratchet pawl (40) is fixedly connected to the mounting plate (20), and the guide plate (36) can only move in the direction of controlling the clamping plate (33) to move inwardly under the meshing of the ratchet pawl (40) and the arcuate ratchet bar (39).

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