Cast-in-place pile top concrete elevation detection device
By designing a concrete elevation detection device for cast-in-place piles and utilizing crane suspension and guide frame technology, the problem of large errors caused by reliance on experience in traditional detection methods has been solved, thereby improving the accuracy of elevation detection and construction efficiency.
Patent Information
- Application Number
- CN202520159944.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-01-23
AI Technical Summary
Traditional methods for detecting the top elevation of cast-in-place piles rely on the experience of operators, which leads to large errors. In particular, it is difficult to accurately distinguish between concrete and deep mud in strata with undulations, resulting in inaccurate control of the pile top elevation and increasing the workload of repair or demolition after the foundation pit is excavated.
A device for detecting the concrete elevation at the top of cast-in-place piles was designed, comprising an arc-shaped lifting lug, a lifting lug fixing frame, a probe rod, a sleeve, and a conical probe. The device is suspended at the designed position by a crane for detection, and a guide frame is lowered to prevent swaying, ensuring the accuracy of the elevation detection.
It improves the accuracy of elevation detection, reduces measurement errors, lowers the intensity of manual labor, and increases construction efficiency and ease of operation.
Smart Images
Figure CN223893432U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to concrete structure technical field, especially relate to a bored pile pile top concrete elevation detection device. BACKGROUND
[0002] Bored pile technology is a widely used construction method. In the field of engineering construction, it can be applied not only to large engineering construction projects such as highways and railways, but also to building underground space. Bored pile is a construction method that uses mechanical drilling to form a pile hole under the condition of mud protection, and uses the guide pipe method for concrete pouring. Bored pile foundation construction is simple and easy to operate, and the equipment investment is generally not very large, so it has been widely used in large buildings such as highways, railways, water conservancy, hydropower, and various civil buildings, and the technology has become increasingly sophisticated.
[0003] In foundation pit engineering and foundation design and construction, bored piles are very common. With the increasing number of high-rise buildings, deep foundation pit engineering has become common. Deep foundation pit engineering requires a large number of bored piles for foundation treatment. Bored piles are poured using the method of underwater concrete pouring. Underwater concrete pouring requires high control of pile top elevation. The common design form is to overfill 1m of pile top concrete, and after the foundation pit is excavated, the pile top concrete is removed to the designed pile top elevation to ensure the quality of the pile top concrete. Inaccurate control of pile top elevation will result in excessive investment in pile head repair or removal after excavation of the foundation pit.
[0004] Traditional bored pile top elevation detection requires operators to use their experience and feelings to detect the concrete surface with steel reinforcement. This requires operators to have rich construction experience, and the operation error is large. In the stratum with idling, the bored pile top elevation is low, and the traditional method of detecting the bored pile top elevation relies on the feeling to distinguish the concrete and deep mud, which increases the difficulty. INVENTION CONTENTS
[0005] Therefore, the utility model aims at providing a bored pile pile top concrete elevation detection device to solve the problem that traditional bored pile top elevation detection requires operators to use their experience and feelings to detect the concrete surface with steel reinforcement, which requires operators to have rich construction experience, and the operation error is large. In the stratum with idling, the bored pile top elevation is low, and the traditional method of detecting the bored pile top elevation relies on the feeling to distinguish the concrete and deep mud, which increases the difficulty.
[0006] To achieve the above purpose, the technical scheme of the utility model is as follows:
[0007] The utility model provides a kind of bored pile pile top concrete elevation detection device, including, arc lug, lug fixed frame, probe rod, sleeve, conical probe head, the probe rod is combined by several same length reinforcing bar section, and locking is locked by sleeve locking bolt and sleeve locking nut between any two adjacent reinforcing bar sections using sleeve connection;The bottom end of the reinforcing bar section at the lowermost end of probe rod is welded with the upper end of the conical probe head;The upper end of the reinforcing bar section at the uppermost end of probe rod is welded with lug fixed frame, arc lug is welded on the lug fixed frame.
[0008] Further, two probe rods of same length are symmetrically arranged on the left and right sides of the top surface circle of the conical probe head, the lug fixed frame is a regular circle, the lug fixed frame is the same size as the conical probe head, and arc lugs are symmetrically welded on the left and right sides of the lug fixed frame, the center line of the arc lug coincides with the center line of the probe rod.
[0009] Further, the top surface circle of the conical probe head is divided into 16 equal parts, the equal points are connected with the vertex of the bottom of the conical body by 16 mm thin reinforcing bars; The vertex of the top of the conical body is connected with the vertex of the bottom of the conical body by 16 mm thin reinforcing bars.
[0010] Further, the length of the reinforcing bar section constituting the probe rod is 1 m, and the overall length of the probe rod is determined according to the difference between the pile driving platform elevation and the designed pile top elevation.
[0011] Further, when the bored pile pile top concrete elevation detection device is used, a lower placement guide frame is placed outside the bored pile, the probe rod of the bored pile pile top concrete elevation detection device slides on the inner side of the lower placement guide frame, and the arc lugs are respectively suspended on the double-hook hooks of the crane.
[0012] Further, the first arc fixed frame in the lower placement guide frame is fixed with the second arc fixed frame by a guide screw, the bottom of the guide screw is fixed with a universal wheel, the first arc fixed frame and the second arc fixed frame are both fixed with the guide screw by nuts, arc plate fixing rods are arranged on the inner sides of the first arc fixed frame and the second arc fixed frame, arc guide plates are locked by threads on the arc plate fixing rods, and the arc guide plates are back-welded with nuts; the first arc fixed frame and the second arc fixed frame are equal in size and have coinciding centers.
[0013] Further, the arc plate fixing rods are arranged at the four equal division points of the first arc fixed frame and the four equal division points of the second arc fixed frame.
[0014] Further, a universal wheel locking device is arranged on the universal wheel.
[0015] Compared with the prior art, the bored pile pile top concrete elevation detection device has the following advantages:
[0016] The utility model discloses a crane is used in cooperation and suspension judges the pile top elevation detection device of cast-in-place pile and places in the pile top elevation position measurement cast-in-place pile of design, combines the lowering guide frame of assembly, prevents the cast-in-place pile top elevation detection device from producing large amplitude swing when the cast-in-place pile top elevation detection device is hung, ensures the accuracy of elevation detection, avoids the measurement error caused by shaking, and the crane can accurately place the detection device in the pile top elevation position of design, ensures the accuracy of measurement result, reduces the labor intensity of manual handling, improves the convenience of operation, speeds up the measurement speed, improves overall construction efficiency.
[0017] The lowering guide frame and the cast-in-place pile top elevation detection device are both formed through simple assembly, and the whole can be disassembled and placed to adapt to different working conditions. BRIEF DESCRIPTION OF DRAWINGS
[0018] The accompanying drawings, which form a part of this description, are included to provide a further understanding of the application. The embodiments of the application and its
[0019] In the drawings:
[0020] Figure 1 The side view schematic drawing of the cast-in-place pile top concrete elevation detection device is shown in the utility model embodiment;
[0021] Figure 2 The side view schematic drawing of the cast-in-place pile top concrete elevation detection device is shown in the utility model embodiment;
[0022] Figure 3 The side view schematic drawing of the cast-in-place pile top concrete elevation detection device is shown in the utility model embodiment;
[0023] Figure 4 The side view schematic drawing of the cast-in-place pile top concrete elevation detection device is shown in the utility model embodiment;
[0024] Figure 5 The side view schematic drawing of the cast-in-place pile top concrete elevation detection device is shown in the utility model embodiment;
[0025] Figure 6 The side view schematic drawing of the cast-in-place pile top concrete elevation detection device is shown in the utility model embodiment.
[0026] BRIEF DESCRIPTION OF DRAWINGS
[0027] 1, arc lug; 2, lug fixing frame; 3, probe rod; 31, first section probe rod; 32, second section probe rod; 4, sleeve; 41, sleeve locking bolt; 42, sleeve locking nut; 5, conical probe head; 6, first arc fixing frame; 7, second arc fixing frame; 8, universal wheel; 9, arc guide plate; 10, guide screw; 11, arc plate fixing rod. DETAILED DESCRIPTION
[0028] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.
[0029] In the description of the present application, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0030] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0031] The present application will be described in detail below with reference to the drawings and in combination with the embodiments.
[0032] Reference Figures 1-6As shown, the probe rod 3 in the embodiment is divided into two sections, the first section 31 and the second section 32, and in actual use, the setting can be made according to the actual situation. The embodiment provides a bored pile top concrete elevation detection device, which comprises a circular lug 1, a lug fixing frame 2, a probe rod 3, a sleeve 4, and a conical probe 5. The probe rod 3 is composed of several steel segments of the same length, and the adjacent steel segments of any two sections are connected by the sleeve 4 and locked by the sleeve locking bolt 41 and the sleeve locking nut 41. The bottom end of the steel segment at the lowermost end of the probe rod 3 is welded with the upper end of the conical probe 5. The upper end of the steel segment at the uppermost end of the probe rod 3 is welded with the lug fixing frame 2, and the lug fixing frame 2 is welded with the circular lug 1.
[0033] Specifically, in the embodiment, two probe rods 3 of the same length are symmetrically arranged on the left and right sides of the top surface of the conical probe 5. The lug fixing frame 2 is a regular circle. The lug fixing frame 2 is the same size as the conical probe 5, and the lug fixing frame 2 is symmetrically welded with the circular lugs 1 on the left and right sides. The center line of the circular lug 1 coincides with the center line of the probe rod 3.
[0034] Specifically, in the embodiment, the top surface of the conical probe 5 is divided into 16 equal parts. The equal parts are connected by 16 steel segments of 10 mm in diameter. mm thin steel and the vertex of the conical bottom; mm thin steel and the vertex of the conical bottom, top.
[0035] Specifically, in the embodiment, the length of the steel segment constituting the probe rod 3 is 1 m, and the overall length of the probe rod 3 is determined according to the difference between the pile driving platform elevation and the designed pile top elevation.
[0036] Specifically, in the embodiment, when the bored pile top concrete elevation detection device is used, a lower guide frame is placed outside the bored pile. The probe rod 3 of the bored pile top concrete elevation detection device slides inside the lower guide frame, and the circular lugs 1 are respectively suspended on the double-hook hooks of the crane.
[0037] Specifically, in the embodiment, the first circular arc fixing frame 6 in the lower guide frame is fixed with the second circular arc fixing frame 7 through the guide screw 10. The bottom of the guide screw 10 is fixed with the universal wheel 8. The first circular arc fixing frame 6 and the second circular arc fixing frame 7 are both fixed with the guide screw 10 through the nut. The inner side of the first circular arc fixing frame 6 and the second circular arc fixing frame 7 is provided with the circular arc plate fixing rod 11. The circular arc plate fixing rod 11 is screwed with the circular arc guide plate 9, and the circular arc guide plate 9 is welded with the nut on the back. The first circular arc fixing frame 6 and the second circular arc fixing frame 7 are equal in size and coincide in center.
[0038] Specifically, in the embodiment, the circular arc plate fixing rods 11 are arranged at the four equal points of the first circular arc fixing frame 6 and the four equal points of the second circular arc fixing frame 7.
[0039] Specifically, in this embodiment, the caster wheel 8 is provided with a caster wheel locking device.
[0040] Based on different working conditions, the difference between the design pile top elevation and the pile driving platform elevation is first determined, thereby determining the length of the probe. The main reinforcement of the cast-in-place pile steel cage is used as the material for the probe and the conical probe. Circular lifting lugs are fixed to the steel reinforcement sections on both sides of the top of the probe. Arc-shaped lifting lugs are welded onto the lifting lugs, and the entire cast-in-place pile top concrete elevation detection device is welded together, thus completing the fabrication of the cast-in-place pile top elevation detection device.
[0041] After the concrete pouring is completed, the operators use a crane in conjunction with a pile top elevation detection device to place it at the designed pile top elevation position for measurement. Combined with an assembled guide frame, the device is suspended to prevent significant shaking, ensuring accuracy and avoiding measurement errors caused by swaying. The crane can precisely place the detection device at the designed pile top elevation position, ensuring accurate measurement results, reducing the labor intensity of manual handling, improving operational convenience, accelerating measurement speed, and increasing overall construction efficiency.
[0042] Both the lowering guide frame and the pile top elevation detection device are easily assembled, adaptable to different working conditions, and can be disassembled and placed as a whole. After the crane completes the lifting of the concrete tremie pipe, the detection device is immediately connected to the crane to detect the concrete elevation. Then, the probe is pulled out of the pile hole to observe whether there is concrete aggregate inside. If it is found, the concrete has reached the design elevation; if not, it means the concrete has not reached the design elevation. Simultaneously, during construction, the relationship between the volume of concrete used per pile and the pile top elevation can be used to calculate concrete loss and determine whether the pile hole needs to be enlarged, thereby ensuring the construction quality of the cast-in-place piles.
[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A device for detecting the concrete elevation at the top of a cast-in-place pile, characterized in that, It includes an arc-shaped lifting lug (1), a lifting lug fixing frame (2), a probe rod (3), a sleeve (4), and a conical probe (5). The probe rod (3) is composed of several steel bar segments of the same length. Any two adjacent steel bar segments are connected by a sleeve (4) and locked by a sleeve locking bolt (41) and a sleeve locking nut (42). The bottom end of the steel bar segment at the bottom of the probe rod (3) is welded to the top end of the conical probe (5). The top end of the steel bar segment at the top of the probe rod (3) is welded to the lifting lug fixing frame (2). The arc-shaped lifting lug (1) is welded on the lifting lug fixing frame (2).
2. The device for detecting the concrete elevation at the top of a cast-in-place pile according to claim 1, characterized in that, Two probe rods (3) of the same length are symmetrically arranged on the left and right sides of the top surface of the cone probe (5). The lifting lug fixing frame (2) is a perfect circle. The lifting lug fixing frame (2) is the same size as the cone probe (5), and the left and right sides of the lifting lug fixing frame (2) are symmetrically welded with arc lifting lugs (1). The center line of the arc lifting lug (1) coincides with the center line of the probe rod (3).
3. The device for detecting the concrete elevation at the top of a cast-in-place pile according to claim 1, characterized in that, The top circular surface of the conical probe (5) is divided into 16 equal parts, and the division points are... The thin steel bar is connected to the bottom apex of the cone; The thin steel bars are welded to the bottom and top of the cone.
4. The device for detecting the concrete elevation at the top of a cast-in-place pile according to claim 2, characterized in that, The length of the steel bar segment that makes up the probe rod (3) is 1m. The overall length of the probe rod (3) is determined according to the difference between the elevation of the pile driving platform and the design pile top elevation.
5. The device for detecting the concrete elevation at the top of a cast-in-place pile according to claim 1, characterized in that, When the concrete elevation detection device at the top of the cast-in-place pile is used, a lowering guide frame is placed outside the cast-in-place pile, and the probe rod (3) of the concrete elevation detection device at the top of the cast-in-place pile slides inside the lowering guide frame. The arc-shaped lifting lugs (1) are respectively suspended on the double hooks of the crane.
6. The device for detecting the concrete elevation at the top of a cast-in-place pile according to claim 5, characterized in that, The first arc-shaped fixing frame (6) in the lowering guide frame is fixed to the second arc-shaped fixing frame (7) by the guide screw (10). The bottom of the guide screw (10) is fixed with a universal wheel (8). The first arc-shaped fixing frame (6) and the second arc-shaped fixing frame (7) are both fixed to the guide screw (10) by nuts. The inner side of the first arc-shaped fixing frame (6) and the second arc-shaped fixing frame (7) is provided with an arc plate fixing rod (11). The arc plate fixing rod (11) is threaded to lock the arc guide plate (9). The arc guide plate (9) is back-welded with a nut. The first arc-shaped fixing frame (6) and the second arc-shaped fixing frame (7) are equal in size and coincide in center.
7. The device for detecting the concrete elevation at the top of a cast-in-place pile according to claim 6, characterized in that, The arc plate fixing rods (11) are all located at the four equal division points of the first arc fixing frame (6) and the four equal division points of the second arc fixing frame (7).
8. The device for detecting the concrete elevation at the top of a cast-in-place pile according to claim 6, characterized in that, The caster wheel (8) is equipped with a caster wheel locking device.