Construction detection device and method based on combination of old pile and newly-built tower pile

Abstract

The invention relates to the technical field of transmission tower foundation construction, in particular to a construction detection device and method based on combination of an old pile and a newly-built tower pile, the construction detection device comprises a mounting ring, a support is bolted in the mounting ring, a fixing frame is arranged at the top of the support, and a winding and unwinding shaft is rotatably connected in the fixing frame; the bottom of the mounting ring is provided with a detection mechanism, the detection mechanism is connected with the winding and unwinding shaft through a rope, the front side and the rear side of the top of the fixing frame are in bolted connection with an ultrasonic detection control host and a strength detection control host correspondingly, and a plurality of fixing assemblies are annularly welded to the bottom of the mounting ring. The detection mechanism comprises a supporting ring. The construction detection device and method based on combination of the old pile and the newly-built pole and tower pile have the advantages that the old pile foundation can be comprehensively and accurately detected, a reliable basis is provided for subsequent reasonable construction, and safety and stability of the power transmission line pole and tower foundation are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of power transmission tower foundation construction, and in particular to a construction detection device and method based on the combination of old piles and newly built tower piles. Background Art

[0002] As we all know, with the continuous advancement of power infrastructure construction and the growing demand for the transformation and upgrading of existing transmission lines, many engineering projects are faced with the problem of how to effectively utilize existing old pile foundation resources and reasonably combine them with newly built tower piles. Transmission line towers are the key supporting structures for power transmission, and the stability of their foundations is of vital importance. Various conditions may occur in the old pile foundations during long-term use, which makes accurate detection of old pile foundations a key link in ensuring the safety and quality of subsequent construction.

[0003] At present, although the commonly used old pile foundation detection method can obtain some information about the old pile foundation to a certain extent, it has many limitations. Since the construction technology is not yet able to pull out the original tower cast-in-place piles as a whole, part of the old pile foundation is deeply buried in the soil, and the conventional static load test, core drilling and strength test methods for pile foundations are not applicable to the old pile foundation. Therefore, it is difficult to comprehensively and accurately evaluate the real condition of the old pile foundation under various complex situations, which is not conducive to the subsequent combined construction of the old pile foundation and the newly built tower pile. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that in the prior art it is impossible to perform static load tests, core drilling and strength tests on old pile foundations deeply buried in the soil, and it is difficult to comprehensively and accurately evaluate the real conditions of the old pile foundations under various complex situations, and to propose a construction detection device and method based on the combination of old piles and newly built tower piles.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A construction detection device based on the combination of old piles and newly built tower piles, comprising a mounting ring and a detection mechanism, wherein the mounting ring is fixedly mounted on the top of the old pile foundation, and the detection mechanism is in the central hole of the old pile foundation, and performs crack and defect detection on the inner wall of the old pile foundation; The mounting ring is provided with an ultrasonic detection control host, a strength detection control host, and a retractable reel. The retractable reel is connected to the detection mechanism through a rope, and the detection mechanism moves up and down in the central hole of the old pile foundation. The detection mechanism includes a support ring, an adjustment component, an ultrasonic detection component, and a strength detection component; the adjustment component is located at the center of the upper part of the support ring, the strength detection component is located at the lower part of the support ring, and a plurality of ultrasonic detection components are arranged circumferentially on the periphery of the support ring. The adjustment component drives each ultrasonic detection component to move outward in a diffuse manner so that the ultrasonic detection component is close to the inner wall of the central hole of the old pile foundation; the strength detection component is used to hit the inner wall of the central hole of the old pile foundation; Wherein, the ultrasonic detection component is electrically connected to the ultrasonic detection control host, and the strength detection component is electrically connected to the strength detection control host; Several fixing components for clamping the top of the old pile foundation are arranged circumferentially at the bottom of the installation ring.

[0006] As a further preferred solution, a support plate is provided inside the support ring, the support plate is connected to the rope, and the adjustment assembly is located on the support plate; A fixing frame is arranged on the mounting ring, the retractable reel is located in the fixing frame, and the ultrasonic detection control host and the strength detection control host are located on the fixing frame.

[0007] As a further preferred scheme, the adjustment component includes a protective shell, the interior of the protective shell is rotatably connected to a longitudinally arranged main shaft, and the surface of the main shaft is sleeved with an active bevel gear, the active bevel gear is circumferentially meshingly connected to a driven bevel gear, and the driven bevel gear is connected to a horizontally arranged first screw, the first screw corresponds to an ultrasonic detection component, one end of the first screw extends outside the protective shell and is threadedly connected to a screw block on the corresponding ultrasonic detection component, the end of the first screw is a baffle, and the other end of the first screw is connected to the driven bevel gear.

[0008] As a further preferred solution, the ultrasonic detection component includes an arc-shaped plate, the screw block is located on the arc-shaped plate, two ultrasonic probes are arranged on the arc-shaped plate, and the ultrasonic probes are electrically connected to the ultrasonic detection control host.

[0009] As a further preferred solution, a sliding rod runs through the interior of the arc-shaped plate, and one end of the sliding rod close to the support ring extends to the interior of the support ring, the sliding rod is fixed to the support ring, and the other end of the sliding rod is bolted to a guide wheel; The surfaces of the slide rods are respectively sleeved with positioning springs and connecting plates, and one side of the positioning spring close to the connecting plate and the supporting ring is respectively connected to the two.

[0010] As a further preferred embodiment, the strength detection assembly includes a connecting ring, which is bolted to the bottom of the support ring, and a support plate is bolted to the bottom of the connecting ring. The center position of the support plate is rotatably connected to an output shaft, and the output shaft is sleeved with a cam. A plurality of striking members are arranged in a ring along the connecting ring, and the rotation of the cam drives the striking members to impact outward in turn.

[0011] As a further preferred solution, the striking member includes a shell, the shell passes through the connecting ring, and the shell is provided with a grating sensor; A scale is arranged on the top of the shell, and a pointer shaft is arranged on the lower part of the scale. A pointer block is slidably sleeved on the pointer shaft, and a pointer sheet is arranged on the bottom of the pointer block. A heavy hammer is slidably connected inside the shell, a striking rod is bolted to one side of the heavy hammer, the striking rod passes through one end of the shell, and a push rod is bolted to the other side of the heavy hammer, the push rod passes through the other end of the shell and intermittently contacts the cam of the connecting ring; Two dust rings are fixedly arranged on both sides of the weight inside the shell, the push rod and the striking rod penetrate the dust rings on their respective sides, a first return spring is sleeved on the surface of the striking rod between the weight and the dust ring on one side, and a buffer spring is sleeved on the surface of the push rod between the weight and the dust ring on the other side; A second return spring is sleeved on the pointer shaft, and a step portion is arranged on the surface of the weight. The step portion drives the pointer block to move along the pointer shaft through the pointer sheet, and the movement of the pointer block is detected by the grating sensor.

[0012] As a further preferred embodiment, the fixing assembly includes a connecting block, and the connecting block is welded to the bottom of the mounting ring, a threaded hole and a through hole are provided in the connecting block, a second screw is provided through the threaded hole, and one end of the second screw is rotatably connected to an arc-shaped fixing block, and the other end is a rotating handle, and a guide rod is bolted to one side of the arc-shaped fixing block close to the connecting block, and the guide rod passes through the through hole.

[0013] A detection method based on a construction detection device combining old piles with newly built tower piles, comprising the following steps: S1. First, place the detection mechanism in the central hole of the old pile foundation, and at the same time place the mounting ring on the top of the cross section of the old pile foundation, and fix the mounting ring through the fixing assembly; S2. Adjust the position of the ultrasonic detection component by adjusting the component, so that the multiple ultrasonic detection components expand outward with the support ring as the center, so that they contact the inner wall of the old pile foundation, and use the ultrasonic detection control host to control the ultrasonic detection component to detect cracks and defects inside the old pile foundation; S3. While the ultrasonic testing is being carried out, the strength of the concrete of the old pile foundation is tested through the strength testing assembly, and the testing mechanism connected by the rope is used to gradually move the retractable reel under the testing mechanism, so that a comprehensive testing operation can be carried out on the old pile foundation.

[0014] Compared with the prior art, the present invention provides a construction detection device and method based on the combination of old piles and newly built tower piles, which has the following beneficial effects: The construction detection device and method based on the combination of old piles and newly built tower piles, by setting up a detection mechanism, is used to address the problem that conventional static load tests, core drilling and strength testing methods for pile foundations are not applicable to old pile foundations, and therefore it is difficult to comprehensively and accurately evaluate the real conditions of old pile foundations under various complex situations. The ultrasonic detection component of the detection mechanism can detect the internal conditions of the old pile foundation from all directions, and the probe position can be flexibly adjusted in conjunction with the adjustment component, thereby improving the accuracy and comprehensiveness of the old pile foundation detection results, making up for the limitations of conventional detection, and through the setting of the strength detection component, the surface strength information of the old pile foundation can be obtained, thereby understanding the structural strength of the old pile foundation, providing a reliable basis for subsequent reasonable construction, and ensuring the safety and stability of the transmission line tower foundation.

[0015] In summary, the present invention has the advantages of being able to comprehensively and accurately detect old pile foundations, providing a reliable basis for subsequent reasonable construction, and ensuring the safety and stability of the transmission line tower foundation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the fixed component structure in the present invention; Figure 3 It is a schematic diagram of the structure of the ultrasonic detection component in the present invention; Figure 4 It is a cross-sectional schematic diagram of the structure of the regulating assembly in the present invention; Figure 5 It is a schematic diagram of the strength detection component structure in the present invention; Figure 6 is a schematic diagram of the striking member structure of the present invention; Figure 7 It is a flow chart of the construction detection method based on the combination of old piles and newly built tower piles in the present invention; In the figure: 1, mounting ring; 2, bracket; 3, fixing frame; 4, detection mechanism; 5, support ring; 6, support plate; 7, adjustment assembly; 71, protective shell; 72, main shaft; 73, driving bevel gear; 74, driven bevel gear; 75, first screw; 76, baffle; 77, screw block; 8, ultrasonic detection assembly; 81, arc plate; 82, ultrasonic probe; 83, slide bar; 84, guide wheel; 9, strength detection assembly; 91, connecting ring; 92, support plate; 93, output shaft; 94, cam; 95, striking member; 951, housing; 95 2. Grating sensor; 953. Scale; 954. Pointer shaft; 955. Pointer block; 956. Pointer sheet; 957. Weight; 958. Hit rod; 959. First return spring; 95a. Push rod; 95b. Buffer spring; 10. Retractable reel; 11. Ultrasonic detection control host; 12. Strength detection control host; 13. Fixing assembly; 131. Connecting block; 132. Second screw; 133. Arc-shaped fixing block; 134. Guide rod; 14. Positioning spring; 15. Connecting plate; 16. Second return spring; 17. Dust ring. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Example 1

[0018] See also Figure 1-6 , a construction detection device based on the combination of old piles and newly built pole tower piles, suitable for hollow pile foundations, including a mounting ring 1, a bracket 2 is bolted inside the mounting ring 1, a fixing frame 3 is arranged on the top of the bracket 2, and a retractable reel 10 is rotatably connected inside the fixing frame 3, and the retractable reel 10 is driven to rotate by a motor, a detection mechanism 4 is arranged at the bottom of the mounting ring 1, and the detection mechanism 4 is connected to the retractable reel 10 through a rope, an ultrasonic detection control host 11 and a strength detection control host 12 are bolted to the front and rear sides of the top of the fixing frame 3, respectively, and a plurality of fixing components 13 are welded in a ring shape at the bottom of the mounting ring 1; The detection mechanism 4 includes a support ring 5, a support plate 6 is bolted to the top of the support ring 5, and an adjustment component 7 is bolted to the top of the support plate 6, the adjustment component 7 is located at the center, and a plurality of ultrasonic detection components 8 are arranged in a ring shape on the periphery of the support ring 5, and the plurality of ultrasonic detection components 8 are driven by the adjustment component 7 to diffusely move toward the periphery, and a strength detection component 9 is bolted to the bottom of the support ring 5, and the ultrasonic detection component 8 and the strength detection component 9 are electrically connected to the ultrasonic detection control host 11 and the strength detection control host 12 respectively. By setting up the detection mechanism 4, conventional static load tests and drilling tests on pile foundations can be carried out. The core and strength detection methods are not applicable to the old pile foundation, so it is difficult to comprehensively and accurately evaluate the real condition of the old pile foundation under various complex situations. The ultrasonic detection component 8 of the detection mechanism 4 can detect the internal condition of the old pile foundation from all directions, and the probe position can be flexibly adjusted in conjunction with the adjustment component 7 to improve the accuracy and comprehensiveness of the old pile foundation detection results, make up for the limitations of conventional detection, and through the setting of the strength detection component 9, the surface strength information of the old pile foundation can be obtained, so as to understand the structural strength of the old pile foundation, provide a reliable basis for subsequent reasonable construction, and ensure the safety and stability of the transmission line tower foundation.

[0019] The overall device realizes comprehensive detection of the integrity, strength and other aspects of the old pile foundation, and can comprehensively and accurately evaluate the real condition of the old pile foundation, provide a reliable basis for the reasonable combination construction of the old pile foundation and the newly built tower pile, and ensure the safety and quality of the transmission line tower foundation construction.

[0020] The adjusting component 7 comprises a protective shell 71, and the protective shell 71 is bolted to the top center of the support plate 6, the inner rotation of the protective shell 71 is connected to the main shaft 72, and the surface of the main shaft 72 is sleeved with an active bevel gear 73, the active bevel gear 73 is driven to rotate by a motor, the top of the active bevel gear 73 is annularly meshed with a driven bevel gear 74, and a first screw 75 is arranged inside the protective shell 71, one side of the first screw 75 extends to the outside of the protective shell 71 and is welded with a baffle 76, the surface of the first screw 75 is threadedly connected with a screw block 77, and the screw block 77 is connected to the ultrasonic detection component 8, and the first screw The other side of the rod 75 is connected to the driven bevel gear 74. By setting the adjustment component 7, the main shaft 72 can be driven to rotate in the protective shell 71 through an external driving device, and the active bevel gear 73 can be driven to rotate synchronously. The meshing connection between the active bevel gear 73 and the driven bevel gear 74 can drive the first screw rod 75 to rotate, and the screw block 77 can be moved on the surface of the first screw rod 75 through the thread cooperation between the first screw rod 75 and the screw block 77, thereby driving the position of the ultrasonic detection component 8, so that the ultrasonic detection component 8 can be close to the inner wall of the old pile foundation, reducing the influence of factors such as air on the ultrasonic detection results.

[0021] Among them, the ultrasonic detection component 8 includes an arc plate 81, which is arranged in an arc shape on the periphery of the support ring 5, and the top of the arc plate 81 is fixedly connected to the screw block 77, and two ultrasonic probes 82 are arranged inside the arc plate 81, and the ultrasonic probes 82 are electrically connected to the ultrasonic detection control host 11, and a sliding rod 83 runs through the inside of the arc plate 81, and the side of the sliding rod 83 close to the support ring 5 extends to the inside of the support ring 5, and the other side of the sliding rod 83 is bolted with a guide wheel 84. By setting the ultrasonic detection component 8, the ultrasonic probe 82 inside the arc plate 81 can emit and receive ultrasonic signals for detection, thereby transmitting the signal to the ultrasonic detection control host 11, and the cracks and defects inside the old pile foundation are detected, and when the inner wall surface of the old pile foundation is uneven, the sliding rod 83 can be retracted and extended under the action of the positioning spring 14, so that the guide wheel 84 can adapt to the old pile foundation, ensuring effective contact between the ultrasonic probe 82 and the inner wall of the old pile foundation.

[0022] Among them, the surfaces of the slide rod 83 are respectively sleeved with a positioning spring 14 and a connecting plate 15, and the positioning spring 14 is respectively connected to the connecting plate 15 and the support ring 5 on one side thereof. By setting the positioning spring 14 and the connecting plate 15, when the ultrasonic detection component 8 is displaced due to the uneven inner wall of the old pile foundation, the slide rod 83 will move accordingly. At this time, the positioning spring 14 will expand and contract according to the displacement, providing corresponding elastic force to maintain the fitting state of the guide wheel 84 with the surface of the old pile foundation, while buffering the impact of external force on the ultrasonic probe 82, protecting the probe from excessive extrusion or collision damage.

[0023] Among them, the strength detection component 9 includes a connecting ring 91, which is bolted to the bottom of the support ring 5, and a support plate 92 is bolted to the bottom of the connecting ring 91, and the internal rotation of the support plate 92 is connected to an output shaft 93, and a cam 94 is sleeved on the top of the output shaft 93. A striking piece 95 is installed in a ring-shaped manner through the connecting ring 91, and the striking piece 95 is used in conjunction with the cam 94. The cam 94 rotates to hit each striking piece 95 in turn. By setting the strength detection component 9, the output shaft 93 can be driven by an external driving device to drive the cam 94 to rotate. When the cam 94 rotates, it will periodically push the striking piece 95 to move, so that it strikes the inner wall of the old pile foundation. During the striking process, the response data of the old pile foundation to the striking force can be collected with the help of relevant sensors and other components, thereby analyzing the strength characteristics of the old pile foundation.

[0024] The striking member 95 includes a shell 951, which penetrates the connecting ring 91, and a grating sensor 952 is bolted to the top of the shell 951, a scale 953 is arranged at the top of the inside of the shell 951, and a pointer shaft 954 is arranged at the bottom of the scale 953, a pointer block 955 is slidably sleeved on the surface of the pointer shaft 954, and a pointer sheet 956 is arranged at the bottom of the pointer block 955, a heavy hammer 957 is slidably connected to the inside of the shell 951, and a striking rod 958 is bolted to one side of the heavy hammer 957, and the striking rod 958 is away from the heavy hammer. One side of 957 extends to the outside of the shell 951, and the surface of the striking rod 958 is sleeved with a first return spring 959, the side of the heavy hammer 957 away from the striking rod 958 is bolted with a push rod 95a, and the side of the push rod 95a away from the heavy hammer 957 extends to the inside of the connecting ring 91 and is used in conjunction with the cam 94, the surface of the push rod 95a is sleeved with a buffer spring 95b, and the buffer spring 95b is used in conjunction with the heavy hammer 957. By setting the striking member 95, when the cam 94 pushes the push rod 95a, the heavy hammer 957 moves in the shell 951 , and pushes the striking rod 958 to strike the old pile foundation, and at the same time compresses the first reset spring 959. When the striking rod 958 contacts the inner wall of the old pile foundation, the local concrete deforms and absorbs part of the energy, and the other part of the energy is converted into the rebound kinetic energy of the heavy hammer 957. When the rebound kinetic energy is completely converted into potential energy, the heavy hammer 957 rebounds to the maximum distance. At the same time, the heavy hammer 957 will contact the pointer piece 956 when it resets and moves. Since the pointer piece 956 is arranged in an inclined shape, the contact between the heavy hammer 957 and the pointer piece 956 will drive the pointer piece 956 And the pointer block 955 moves on the pointer shaft 954, and the displacement of the weight 957 can be intuitively displayed through the scale 953 and the pointer block 955. At the same time, the grating sensor 952 is used to record the displacement data and transmit it to the strength detection control host 12, so that the rebound value of the weight 957 is used as an indicator related to the strength to estimate the strength of the concrete, thereby obtaining the surface strength information of the old pile foundation, thereby understanding the structural strength of the old pile foundation, providing a reliable basis for subsequent reasonable construction, and ensuring the safety and stability of the transmission line tower foundation.

[0025] Among them, a step portion is provided on the surface of the weight 957, and the step portion is used in conjunction with the pointer piece 956. The surface of the pointer shaft 954 is sleeved with a second return spring 16, and the second return spring 16 is connected to the pointer block 955 on one side. By setting the step portion on the surface of the weight 957, when the weight 957 rebounds, the step portion on its surface will be used to resist the pointer piece 956, thereby promoting the movement of the pointer piece 956 and the pointer block 955. When the pointer block 955 moves, the second return spring 16 will be compressed. When the weight 957 hits again, the resistance to the pointer piece 956 will be released. At this time, the elasticity of the second return spring 16 can be used to reset the pointer block 955, thereby facilitating the pointer block 955 to perform the next indication work.

[0026] Among them, two dustproof rings 17 are arranged inside the shell 951, and the push rod 95a and the striking rod 958 are passed through the inside of the dustproof ring 17 on one side thereof, and the first return spring 959 and the buffer spring 95b are connected to the dustproof ring 17 on one side thereof. By setting the dustproof ring 17, dust and other impurities can be effectively prevented from entering, and the precision components inside the striking member 95 can be protected, thereby ensuring the long-term and stable operation of the strength detection component 9 and reducing the detection error caused by dust interference.

[0027] Among them, the fixing assembly 13 includes a connecting block 131, and the connecting block 131 is welded in an annular shape to the bottom of the mounting ring 1, the internal thread of the connecting block 131 is penetrated by a second screw rod 132, and one side of the second screw rod 132 is rotatably connected to an arc-shaped fixing block 133, and the arc-shaped fixing block 133 is bolted to two guide rods 134 on one side close to the connecting block 131, and the guide rod 134 penetrates its interior on one side close to the connecting block 131. By setting the fixing assembly 13, by rotating the second screw rod 132, since the second screw rod 132 and the connecting block 131 are threadedly penetrated and one side is rotatably connected to the arc-shaped fixing block 133, as the second screw rod 132 rotates, the arc-shaped fixing block 133 will approach or move away from the old pile foundation under the guidance of the guide rod 134. When the arc-shaped fixing block 133 is tightly fitted to the surface of the old pile foundation, the mounting ring 1 can be firmly fixed on the old pile foundation, ensuring the stability of the detection device during the detection process, and providing a reliable installation foundation for accurate detection.

[0028] Working principle of this embodiment: firstly, the detection structure 4 is placed in the central hole of the old pile foundation, and the installation ring 1 is placed on the top of the cross section of the old pile foundation. Then, by rotating the second screw 132, since the second screw 132 is threadedly penetrated by the connecting block 131 and one side is rotatably connected with the arc-shaped fixing block 133, as the second screw 132 rotates, the arc-shaped fixing block 133 will approach or move away from the old pile foundation under the guidance of the guide rod 134. When the arc-shaped fixing block 133 is tightly attached to the surface of the old pile foundation, the installation ring 1 can be firmly fixed. The main shaft 72 is then driven by the reduction motor to rotate in the protective shell 71, and the active bevel gear 73 is synchronously driven to rotate. The active bevel gear 73 is meshed with the driven bevel gear 74 to drive the first screw 75 to rotate, and the screw block 77 can be moved on the surface of the first screw 75 through the threaded cooperation between the first screw 75 and the screw block 77, so that the position of the ultrasonic detection component 8 can be driven, so that the ultrasonic detection component 8 can be close to the inner wall of the old pile foundation, and then the inner wall of the arc plate 81 is used to move the ultrasonic detection component 8 to the inner wall of the old pile foundation. The ultrasonic probe 82 will emit ultrasonic signals according to the set working frequency and mode. These ultrasonic signals will propagate toward the old pile foundation. When the ultrasonic signals encounter different medium interfaces, defects, etc. inside the old pile foundation, reflection, refraction, etc. will occur, thereby forming a reflected echo signal. After emitting the ultrasonic signal, the ultrasonic probe 82 immediately enters the receiving state and can sensitively capture the reflected echo signal. Once the reflected echo signal is received, the ultrasonic probe 82 will convert these reflected echo signals containing the relevant characteristic information of the old pile foundation into electrical signals through the electrical connection line previously established with the ultrasonic detection control host 11, and transmit them to the ultrasonic detection control host 11 in real time, so as to detect cracks and defects inside the old pile foundation. At the same time as the ultrasonic detection, the output shaft 93 is driven by the reduction motor to drive the cam 94 to rotate. When the cam 94 rotates, it will periodically push the push rod 95a and the heavy hammer 957 to move in the shell 951, and push the striking rod 958 to strike the old pile foundation. Figure 6In the figure, the weight 957 is in the state before the first use. When it is used for the first time, when the weight 957 moves to the position of the pointer piece 956, the pointer piece 956 is squeezed and deformed, so that the weight 957 passes over the pointer piece 956, and the weight 957 reaches the right side of the pointer piece 956. Then the first return spring 959 releases the pressure, and the weight 957 moves to the left. The step of the weight 957 drives the pointer piece 956 and the pointer block 955 to compress the second return spring 16. The second return spring 16 always drives the pointer piece 956 and the pointer block 955 to resist the step of the weight 957. At this point, the weight 957 is permanently on the right side of the pointer piece 956. In use, the weight 957 is driven to the right by the cam 94, and at the same time, the first return spring 959 releases the pressure, and the weight 957 moves to the left. The position spring 959 is compressed, and when the striking rod 958 contacts the inner wall of the old pile foundation, the local concrete deforms and absorbs part of the energy, and the other part of the energy is converted into the rebound kinetic energy of the heavy hammer 957. When the rebound kinetic energy is completely converted into potential energy, the heavy hammer 957 rebounds to the maximum distance. At the same time, when the heavy hammer 957 resets and moves, it will use the step part on its surface to contact the pointer piece 956. Since the pointer piece 956 is arranged in an inclined shape, the contact between the heavy hammer 957 and the pointer piece 956 will drive the pointer piece 956 and the pointer block 955 to move on the pointer shaft 954. The displacement of the heavy hammer 957 can be intuitively displayed through the scale 953 and the pointer block 955. At the same time, the grating sensor 952 receives the pointer block 955. The reflected light can be effectively captured by its receiving end to record the displacement data of the pointer block 955 and transmit the signal to the strength detection control host 12 in a wireless form, so that the rebound value of the heavy hammer 957 is used as an indicator related to the strength, which is used to estimate the strength of the concrete, thereby obtaining the surface strength information of the old pile foundation. When the pointer block 955 moves, the second reset spring 16 will be compressed. When the heavy hammer 957 hits again, the resistance to the pointer piece 956 will be released. At this time, the elasticity of the second reset spring 16 can be used to reset the pointer block 955, so as to facilitate the pointer block 955 to perform the next indication work. Finally, the rope is lowered by the retractable reel 10, so that the detection structure 4 can perform a comprehensive detection operation on the old pile foundation. Example 2

[0029] refer to Figure 7 The present invention also provides a detection method based on a construction detection device combining old piles with newly built tower piles, comprising the following steps: S1. First, the detection mechanism 4 is placed in the center hole of the old pile foundation, and the mounting ring 1 is placed on the top of the cross section of the old pile foundation, and the mounting ring 1 is fixed by the fixing assembly 13; S2. Adjust the position of the ultrasonic detection component 8 by adjusting the component 7, so that the multiple ultrasonic detection components 8 expand outward with the support ring 5 as the center, so that it contacts the inner wall of the old pile foundation, and use the ultrasonic detection control host 11 to control the ultrasonic detection component 8 to detect cracks and defects inside the old pile foundation; S3. While the ultrasonic detection is being performed, the strength detection component 9 is used to detect the concrete strength of the old pile foundation, and the detection mechanism 4 connected by the rope is used to gradually move the retractable reel 10 under the detection mechanism 4, so that a comprehensive detection operation can be performed on the old pile foundation.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A construction detection device based on the combination of old piles and newly built tower piles, characterized in that: It comprises a mounting ring (1) and a detection mechanism (4), wherein the mounting ring (1) is fixedly mounted on the top of the old pile foundation, and the detection mechanism (4) is located in the central hole of the old pile foundation and performs crack and defect detection on the inner wall of the old pile foundation; The mounting ring (1) is provided with an ultrasonic detection control host (11), a strength detection control host (12), and a retractable reel (10); the retractable reel (10) is connected to a detection mechanism (4) via a rope; and the detection mechanism (4) is movable in a lifting manner within a central hole of the old pile foundation; The detection mechanism (4) comprises a support ring (5), an adjustment component (7), an ultrasonic detection component (8), and a strength detection component (9); the adjustment component (7) is located at the center of the upper part of the support ring (5), the strength detection component (9) is located at the lower part of the support ring (5), and a plurality of ultrasonic detection components (8) are arranged circumferentially on the periphery of the support ring (5); the adjustment component (7) drives each ultrasonic detection component (8) to move outward in a diffuse manner, so that the ultrasonic detection component (8) is close to the inner wall of the central hole of the old pile foundation; the strength detection component (9) is used to strike the inner wall of the central hole of the old pile foundation; The ultrasonic detection component (8) is electrically connected to the ultrasonic detection control host (11), and the strength detection component (9) is electrically connected to the strength detection control host (12); A plurality of fixing components (13) for clamping the top of the old pile foundation are arranged circumferentially at the bottom of the mounting ring (1).

2. A construction detection device based on the combination of old piles and newly built tower piles according to claim 1, characterized in that: A support plate (6) is provided inside the support ring (5), the support plate (6) is connected to the rope, and the adjustment component (7) is located on the support plate (6); A fixed frame (3) is provided on the mounting ring (1), the retractable reel (10) is located in the fixed frame (3), and the ultrasonic detection control host (11) and the strength detection control host (12) are located on the fixed frame (3).

3. A construction detection device based on the combination of old piles and newly built tower piles according to claim 1, characterized in that: The adjustment component (7) comprises a protective shell (71), the interior of the protective shell (71) is rotatably connected to a longitudinally arranged main shaft (72), and a driving bevel gear (73) is sleeved on the surface of the main shaft (72), the driving bevel gear (73) is circumferentially meshedly connected to a driven bevel gear (74), and the driven bevel gear (74) is connected to a horizontally arranged first screw rod (75), the first screw rod (75) corresponds to an ultrasonic detection component (8), one end of the first screw rod (75) extends to the outside of the protective shell (71) and is threadedly connected to a screw block (77) on the corresponding ultrasonic detection component (8), the end of the first screw rod (75) is a baffle (76), and the other end of the first screw rod (75) is connected to the driven bevel gear (74).

4. A construction detection device based on the combination of old piles and newly built tower piles according to claim 3, characterized in that: The ultrasonic detection component (8) comprises an arc-shaped plate (81), the screw block (77) is located on the arc-shaped plate (81), two ultrasonic probes (82) are arranged on the arc-shaped plate (81), and the ultrasonic probes (82) are electrically connected to the ultrasonic detection control host (11).

5. A construction detection device based on the combination of old piles and newly built tower piles according to claim 4, characterized in that: A sliding rod (83) passes through the interior of the arc-shaped plate (81), and one end of the sliding rod (83) close to the support ring (5) extends into the interior of the support ring (5), the sliding rod (83) is fixed to the support ring (5), and the other end of the sliding rod (83) is bolted to a guide wheel (84); The surfaces of the slide rod (83) are respectively sleeved with a positioning spring (14) and a connecting plate (15), and the side of the positioning spring (14) close to the connecting plate (15) and the supporting ring (5) is respectively connected to the two.

6. The construction detection device based on the combination of old piles and newly built tower piles according to claim 1 is characterized by: The strength detection assembly (9) comprises a connecting ring (91), the connecting ring (91) being bolted to the bottom of the supporting ring (5), and a supporting plate (92) being bolted to the bottom of the connecting ring (91), an output shaft (93) being rotatably connected to the center of the supporting plate (92), and a cam (94) being sleeved on the output shaft (93), a plurality of striking members (95) being arranged in a ring shape on the connecting ring (91), and the cam (94) being rotated to sequentially drive the striking members (95) to strike outwards.

7. A construction detection device based on the combination of old piles and newly built tower piles according to claim 6, characterized in that: The striking member (95) comprises a shell (951), the shell (951) penetrates the connecting ring (91), and the shell (951) is provided with a grating sensor (952); A scale (953) is arranged at the top of the housing (951), and a pointer shaft (954) is arranged at the bottom of the scale (953); a pointer block (955) is slidably sleeved on the pointer shaft (954), and a pointer sheet (956) is arranged at the bottom of the pointer block (955); A heavy hammer (957) is slidably connected inside the housing (951), a striking rod (958) is bolted to one side of the heavy hammer (957), the striking rod (958) passes through one end of the housing (951), and a push rod (95a) is bolted to the other side of the heavy hammer (957), the other end of the push rod (95a) passes through the housing (951) and is in intermittent contact with a cam (94) of the connecting ring (91); Two dust rings (17) are fixedly provided on both sides of the weight (957) inside the housing (951); the push rod (95a) and the striking rod (958) penetrate the dust rings (17) on their respective sides; a first return spring (959) is sleeved on the surface of the striking rod (958) between the weight (957) and the dust ring (17) on one side; and a buffer spring (95b) is sleeved on the surface of the push rod (95a) between the weight (957) and the dust ring (17) on the other side; A second return spring (16) is sleeved on the pointer shaft (954), and a step portion is provided on the surface of the weight (957). The step portion drives the pointer block (955) to move along the pointer shaft (954) via the pointer sheet (956), and the movement of the pointer block (955) is detected by the grating sensor (952).

8. The construction detection device based on the combination of old piles and newly built tower piles according to claim 1 is characterized by: The fixing assembly (13) comprises a connecting block (131), and the connecting block (131) is welded to the bottom of the mounting ring (1), a threaded hole and a through hole are provided in the connecting block (131), a second screw rod (132) is provided through the threaded hole, one end of the second screw rod (132) is rotatably connected to an arc-shaped fixing block (133), and the other end is a rotating handle, a guide rod (134) is bolted to a side of the arc-shaped fixing block (133) close to the connecting block (131), and the guide rod (134) passes through the through hole.

9. A detection method based on a construction detection device combining old piles with newly built tower piles according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. First, the detection mechanism (4) is placed in the central hole of the old pile foundation, and the mounting ring (1) is placed on the top of the cross section of the old pile foundation, and the mounting ring (1) is fixed by the fixing assembly (13); S2. adjusting the position of the ultrasonic detection component (8) by adjusting the component (7) so that the plurality of ultrasonic detection components (8) expand outward with the support ring (5) as the center so as to contact the inner wall of the old pile foundation, and using the ultrasonic detection control host (11) to control the ultrasonic detection component (8) to detect cracks and defects inside the old pile foundation; S3. While the ultrasonic testing is being performed, the strength of the concrete of the old pile foundation is tested by the strength testing assembly (9), and the retractable reel (10) is gradually moved below the testing mechanism (4) through the rope-connected testing mechanism (4), so that a comprehensive testing operation can be performed on the old pile foundation.

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