Disk diameter inspection device for consolidation expanded disk pile

Abstract

The utility model discloses a disc diameter inspection device for a consolidation expanded disc pile, which comprises a hoisting frame and a radial display frame, and the radial display frame comprises a main pipe, a sleeve, a big arm inspection rod and a small arm diagonal bar; the bottom of the main pipe is hinged to one end of the small arm inclined supporting rod, the inner bottom end of the main pipe is connected with the lifting frame in a lifting mode through a set of lifting ropes, and the outer wall of the main pipe is sleeved with a sleeve in an axial sliding mode; the outer wall of the upper part of the sleeve is hinged with a big arm inspection rod, and the top end of the sleeve is in hoisting connection with a hoisting frame through another group of hoisting ropes; the middle part of the big arm inspection rod is hinged with the other end of the small arm inclined support rod; and the free end of the big arm inspection rod is a disc diameter inspection end for fixedly connecting the expanded disc pile. The inspection device can synchronously pay off ropes to achieve lifting of the whole device, the radial opening size of the inspection device is achieved by calculating the length difference of the ropes through step-by-step rope pay-off, size detection of the disc diameter of a consolidation expanded disc pile in a pile hole is achieved, and the inspection device is simple in structure and easy to achieve.

Description

Technical Field

[0001] This utility model relates to the field of pile construction technology, specifically to a device for inspecting the diameter of a consolidated expanded-diameter pile. Background Technology

[0002] In the construction of consolidated expanded-diameter piles, the pile body is located tens of meters underground. The quality control of expanded-diameter piles has always been a concern in the industry. Because the expansion process is carried out tens of meters underground, and a single pile may have multiple pile diameters, the expansion quality is highly concealed, making it difficult to monitor the expansion quality during construction.

[0003] In existing technologies, ultrasonic hole-forming inspection instruments are commonly used to inspect the quality of hole formation.

[0004] The advantages of ultrasonic borehole inspection include: 1. High-precision inspection: Ultrasonic borehole quality inspection equipment has high-precision inspection capabilities, accurately measuring parameters such as borehole diameter, depth, and perpendicularity. 2. Non-contact inspection: The ultrasonic probe does not contact the borehole wall during the inspection process, avoiding damage to the borehole wall, making it particularly suitable for situations where the integrity of the borehole wall needs to be preserved. 3. Non-destructive testing: Ultrasonic testing is a non-destructive testing method that does not cause any damage to the borehole wall, making it suitable for borehole quality inspection under various geological conditions.

[0005] The disadvantages of ultrasonic borehole testing include: 1. Significantly affected by drilling mud: High mud density or sand content can affect ultrasonic wave propagation, potentially leading to inaccurate results. 2. Equipment dependence: Ultrasonic testing equipment relies on specific instruments and probes; maintenance and calibration require specialized knowledge and skills. 3. Environmental limitations: Under certain complex geological conditions, such as unstable borehole walls or special mud properties, the effectiveness of ultrasonic testing may be affected. 4. High cost: A complete set of equipment can cost as much as 200,000-300,000 RMB.

[0006] In summary, how to design a simple and easy-to-operate inspection device to meet the construction inspection requirements of consolidated expanded piles has become a technical problem that urgently needs to be solved by those in this field. Utility Model Content

[0007] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one objective of this utility model is to provide a device for inspecting the diameter of a consolidated expanded pile. This device can simultaneously release ropes to achieve the overall lifting and lowering of the device, and calculate the radial opening size of the device by releasing ropes in stages and calculating the rope length difference, thereby realizing the size detection of the diameter of the consolidated expanded pile in the pile hole. Moreover, the structure is simple and easy to implement.

[0008] To address the aforementioned problems, this utility model provides a device for inspecting the diameter of consolidated expanded piles, comprising a hoisting frame and a radial extension frame. The hoisting frame provides the radial extension frame with the power for lifting, raising, and extending radially within the pile hole. The radial extension frame includes a main pipe, a sleeve, a boom inspection rod, and a forearm diagonal brace. The bottom of the main pipe is hinged to one end of the forearm diagonal brace, and the bottom of the main pipe is hoisted to the hoisting frame via a set of ropes. The sleeve is axially slidably fitted onto the outer wall of the main pipe. The upper outer wall of the sleeve is hinged to the boom inspection rod, and the top of the sleeve is hoisted to the hoisting frame via another set of ropes. The middle of the boom inspection rod is hinged to support the other end of the forearm diagonal brace, and the free end of the boom inspection rod is the diameter inspection end of the consolidated expanded pile.

[0009] Preferably, the hoisting frame is installed across the open ground at the top of the pile hole, and two sets of pulleys are rotatably connected to the upper part of the hoisting frame, and pulleys for winding the hoisting rope are rotatably connected to both sides of the hoisting frame.

[0010] Preferably, one end of each lifting rope is wrapped around the pulleys on both sides of the lifting frame, the other end of one lifting rope penetrates vertically into the inside of the main pipe and is hooked and fixed to the bottom of the main pipe, and the other end of the other lifting rope is hooked and fixed to the top of the sleeve.

[0011] Preferably, the bottom of the sleeve is threadedly connected to a base, the outer sides of which are hinged to the forearm diagonal brace, and a lifting lug extending into the main pipe is fixed on the top surface of the middle part of the base; a lifting lug is also fixed on one side of the top of the sleeve.

[0012] The advantages of this utility model compared with the prior art are as follows:

[0013] This utility model discloses a device for inspecting the diameter of a consolidated expanded pile. First, a set of pulleys, sheaves, and ropes on the hoisting frame provides lifting power to the entire radially extended frame within the pile hole. Then, another set of pulleys, sheaves, and ropes on the hoisting frame provides lifting power to the casing. The relative movement between the casing and the main pipe drives the forearm brace to support the main boom inspection rod, causing the main boom inspection rod to open radially until it fits against the inner wall of the pile hole. At this time, the relative displacement value between the casing and the main pipe is the difference in rope release between the two sets of ropes. During the inspection process, this difference is used as the data collected on the ground and the inspection standard. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A schematic diagram showing the posture of the bottom surface of this utility model;

[0016] Figure 2 This is a schematic diagram of the posture for detecting the internal diameter of the pile hole according to this utility model;

[0017] Figure 3 This is a schematic diagram of the connection structure at the bottom of the main pipe in this utility model;

[0018] In the diagram: 1-Lifting frame; 2-Pulley; 3-Lifting rope; 4-Windlass; 5-Sleeve; 6-Up boom inspection rod; 7-Forearm diagonal brace; 8-Main pipe; 9-Lifting lug; 10-Base. Detailed Implementation

[0019] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0020] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] The present invention will now be described in further detail with reference to the accompanying drawings.

[0022] Combination Figures 1-3 This utility model discloses a device for inspecting the diameter of a consolidated expanded pile, comprising a hoisting frame 1 and a radial extension frame. The hoisting frame provides the radial extension frame with the power for lifting, raising, and extending radially within the pile hole. The radial extension frame includes a main pipe 8, a sleeve 5, a boom inspection rod 6, and a forearm diagonal brace 7. The bottom of the main pipe is hinged to one end of the forearm diagonal brace, and the bottom of the main pipe is hoisted to the hoisting frame via a set of hoisting ropes 3. The sleeve is axially slidably fitted onto the outer wall of the main pipe. The upper outer wall of the sleeve is hinged to the boom inspection rod, and the top of the sleeve is hoisted to the hoisting frame via another set of hoisting ropes. The middle of the boom inspection rod is hinged to support the other end of the forearm diagonal brace, and the free end of the boom inspection rod is the diameter inspection end of the consolidated expanded pile.

[0023] Preferably, the hoisting frame is installed across the open ground at the top of the pile hole, and two sets of pulleys 2 are rotatably connected to the upper part of the hoisting frame, and pulleys 4 for winding the hoisting rope are rotatably connected to both sides of the hoisting frame.

[0024] Preferably, one end of each lifting rope is wrapped around the pulleys on both sides of the lifting frame, the other end of one lifting rope penetrates vertically into the inside of the main pipe and is hooked and fixed to the bottom of the main pipe, and the other end of the other lifting rope is hooked and fixed to the top of the sleeve.

[0025] Preferably, the bottom of the sleeve is threadedly connected to a base 10, the outer sides of which are hinged to a forearm brace, and a lifting lug 9 extending into the main tube is fixed on the top surface of the middle part of the base; a lifting lug is also fixed on one side of the top of the sleeve.

[0026] To more clearly illustrate the specific implementation of this utility model, an embodiment is provided below:

[0027] This utility model discloses a device for inspecting the diameter of a consolidated expanded pile. A base is threadedly connected to the bottom end of the main pipe. This facilitates the binding and fixing of a set of lifting ropes through the main pipe to the lifting lugs in the middle of the top surface of the base plate. In the non-use state, it facilitates the storage and transportation of the entire radial display frame in a vertical posture, avoiding the deformation of the main boom inspection rod and the forearm diagonal brace under stress during storage and transportation, which would reduce the inspection accuracy.

[0028] On the other hand, two sets of lifting ropes are connected to the main pipe and the sleeve respectively. One set of lifting ropes penetrates the main pipe and hoists and fixes the bottom plate at the bottom of the main pipe. The purpose is to ensure that the overall radial display frame is in a vertical position during the hoisting process, so that the center of the main pipe of the radial display frame, the overall center of gravity of the radial display frame, and the lifting ropes coincide.

[0029] Finally, the working principle of this utility model is as follows:

[0030] First, let's start with Figure 1 The radial display frame is hoisted in a specific orientation, with the bottom plate of the radial display frame touching the ground. At this time, the boom inspection rod and the forearm diagonal brace are both in a folded state (at this time, the sleeve is raised to the highest position of the main pipe). The elongation of the two hoisting ropes at this time is recorded as the initial zero position.

[0031] Then, the supervisor descends until the boom inspection rod and the forearm diagonal brace are fully extended. The distance between the free ends of the two boom inspection rods is the design diameter of the disc hole. At this time, the length of the hoisting rope of the hoisting sleeve is recorded, and this value is recorded as the standard value K.

[0032] Finally, actual measurements were taken. During the measurement process, both sets of lifting ropes were released synchronously, with a release length of S, which is the depth from the ground to the borehole. Then, the lifting rope for the casing was lowered, with a release length of M. First, the standard requires that the borehole diameter can be greater than or equal to the design value but not less than the design value. Therefore, M = K is used as the acceptance standard. When M < K, it indicates that the borehole diameter does not meet the standard and the boom inspection rod has not fully opened within the borehole. It should be noted that when M > K, the lifting rope for the casing is in a slack state. At this time, because the boom inspection rod has already opened to its limit position, or has contacted the borehole wall when it is not opened, the casing cannot descend. Therefore, this slack state is a failure state for inspection and must be controlled by ground operators to ensure that the lifting rope is always taut when measuring the values ​​of M and K.

[0033] In addition, for the convenience of actual construction measurement, a scale can be drawn on the two suspension ropes, or observation ropes can be tied to the suspension ropes at intervals of K, so that construction personnel can quickly determine the relationship between the M value and the K value.

[0034] The consolidated expanded-diameter piles constructed using this invention have vertical holes spaced approximately 10-20 meters apart, and the expansion process takes about 2-4 hours. Using existing ultrasonic testing equipment would be time-consuming, potentially leading to hole collapse and posing safety risks. Furthermore, each test requires a small to medium-sized vehicle and multiple personnel, increasing costs. On the other hand, ultrasonic testing is slow in both lowering and raising the testing rope at the borehole opening. Testing the first hole (approximately 30 meters above ground) takes 20-30 minutes, and subsequent holes, with increasing ground depth, require even longer testing times, again contributing to hole collapse and impacting the overall construction schedule. This device, however, is simple to operate, low-cost, safe, and reliable, effectively addressing the shortcomings of existing technologies.

[0035] Finally, any aspects of this utility model not fully described herein utilize existing mature products and technologies.

[0036] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A device for inspecting the disc diameter of a solidified expanding disc pile, characterized by: The utility model provides a kind of lifting frame and radial spread frame, and lifting frame provides its lifting and radial stretching power inside pile hole for radial spread frame;The radial spread frame includes main pipe, sleeve pipe, big arm inspection rod and small arm inclined strut rod;The bottom of the main pipe is hingedly connected with one end of the small arm inclined strut rod, the inside bottom end of the main pipe is connected with lifting frame by a group of lifting ropes, and the outer wall of the main pipe is axially slidably sleeved with sleeve pipe;The upper outer wall of the sleeve pipe is hingedly connected with big arm inspection rod, and the top end of the sleeve pipe is connected with lifting frame by another group of lifting ropes;The middle part of the big arm inspection rod is hingedly supported with the other end of the small arm inclined strut rod, and the free end of the big arm inspection rod is the disc diameter inspection end of solidified expansion disc pile.

2. The device for checking the disc diameter of a solidified expanding disc pile according to claim 1, characterized in that: The lifting frame is straddled on the open ground on the top of pile hole, and the upper part of the lifting frame is rotatably connected with two groups of pulleys, and the two sides of the lifting frame are rotatably connected with windlass of lifting rope.

3. The device for checking the disc diameter of a solidified expanding disc pile according to claim 2, characterized in that: One end of the lifting rope is wound on the windlass on the two sides of the lifting frame, and the other end of one of the lifting ropes penetrates vertically into the inside of the main pipe and is hung and fixed at the bottom end of the main pipe, and the other end of the other lifting rope is hung and fixed at the top end of the sleeve pipe.

4. The device for checking the disc diameter of a solidified expanding disc pile according to claim 1, characterized in that: The bottom of the sleeve pipe is threadedly connected with base, the two sides of the outside of the base are hingedly connected with small arm inclined strut rod, and the middle top surface of the base is fixed with lifting lug extending into the inside of the main pipe;The top side of the sleeve pipe is also fixed with lifting lug.

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