Portable inner support inclinometer device for detecting straightness of PHC pipe pile body

Abstract

The utility model relates to the technical field of pipe pile construction, and concretely relates to a portable inner bracing device for detecting the straightness of the PHC pipe pile body. The device comprises a sliding seat sliding on the surface of the pipe pile and a set of inner bracing arms. The inner bracing arms have arc-shaped clamping sections adapted to the inner wall of the pipe pile and mounting sections extending outside the pipe pile. Adjustable connecting rods are arranged between the clamping sections. Symmetrically fixed to the outer side of the clamping sections are mounting beams arranged horizontally. Along the length direction of the mounting beams, grooves with scales are formed. Laser emitters are slidingly connected in the grooves. The direction of the light beams of the laser emitters is parallel to the axis of the pipe pile. The sliding seat is provided with a scale plate whose surface is perpendicular to the light beams of the laser emitters. By establishing a stable measurement reference inside the pipe pile with the inner bracing arms and by cooperating the slidable laser emitters with the external sliding scale plate, the problems of low efficiency and measurement error caused by the instability of the external pulling line reference, complicated operation and wind interference in the traditional method are effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of pipe pile construction technology, specifically a portable internal support inclination measuring device for detecting the straightness of PHC pipe piles. Background Technology

[0002] In the field of building construction, prestressed high-strength concrete (PHC) pipe piles are widely used due to their excellent load-bearing performance. As a key component of foundation engineering, their quality directly affects the safety and stability of the overall structure. Among the various quality control indicators for pipe piles, the straightness (or curvature) of the pile body is the core aspect of the acceptance inspection upon arrival at the site. Deviations in the straightness of the pile body not only affect the effective utilization of the vertical bearing capacity of a single pile, but may also lead to risks such as pile fracture and loss of verticality control during subsequent pile driving, increasing rework costs and safety hazards.

[0003] Currently, the industry commonly uses the "pole straightness measurement method" to inspect the straightness of PHC pipe piles at construction sites. This method requires stringing a steel wire parallel to the outside of the pile as a baseline, and then using a steel ruler to measure the distance from the outer wall of the pile to the baseline in segments. Although this method has been used for many years, it has gradually revealed many limitations in practical applications. First, the operation requires at least two people to work together to string the wire, measure, and record the data, making the process cumbersome and time-consuming for single-pile testing. When dealing with the acceptance of large batches of pipe piles, this can easily become an efficiency bottleneck, affecting the construction progress. Second, the measurement baseline of this method relies on a manually taut steel wire, which is easily affected by environmental wind disturbances and its own weight, making it difficult to guarantee the stability of the baseline. Furthermore, the manual reading inevitably introduces subjective errors, posing challenges to the reliability and consistency of the measurement data. In addition, in common construction environments such as outdoor winds of level three or above, the significant swaying of the baseline steel wire often prevents the testing work from being carried out normally, indicating a significant lack of environmental adaptability. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a portable internal support inclination measuring device for detecting the straightness of PHC pipe piles that is less affected by environmental factors.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A portable internal support inclination measuring device for detecting the straightness of PHC pipe piles includes a sliding seat that slides on the surface of the pipe pile and a set of internal support arms. The internal support arms have an arc-shaped engaging section adapted to the inner wall of the pipe pile and an installation section extending out of the pipe pile. An adjustable connecting rod is provided between the engaging sections. A horizontally arranged installation beam is symmetrically fixed on the outer side of the positioning section. A graduated groove is opened on the installation beam along the length direction. A laser emitter is slidably engaged in the groove. The beam of the laser emitter is parallel to the axis of the pipe pile. A graduated plate with a plate surface perpendicular to the beam of the laser emitter is provided on the sliding seat.

[0007] Compared with the prior art, the present utility model adopting the above technical solution has the following outstanding features:

[0008] By establishing a stable measurement benchmark inside the pipe pile through the inner support arm, and using a sliding laser emitter in conjunction with an external sliding scale plate, a single person can quickly perform the test. This effectively avoids the inefficiency and measurement error problems caused by the instability of the external string benchmark, cumbersome operation, and wind interference of traditional methods.

[0009] As a preferred embodiment, a further technical solution of this utility model is:

[0010] Preferably, a level is provided at the top end of the mounting beam to facilitate quick adjustment of the internal support reference to a horizontal state during installation, ensuring the accuracy of the measurement reference and providing a reliable basis for subsequent testing.

[0011] Preferably, the connecting rod is a telescopic sleeve structure, which is equipped with a locking screw for locking the length, so that the device can adapt to PHC pipe piles with different inner diameters. By adjusting the length of the connecting rod, stable internal support can be achieved, which improves the versatility and applicability of the device.

[0012] Preferably, the inner surface of the arc-shaped engagement section is provided with textured surfaces to increase friction or is embedded with anti-slip pads, which increases the friction between the inner support arm and the inner wall of the pipe pile, prevents the device from sliding during the testing process, and ensures the stability of the measurement benchmark.

[0013] Preferably, the laser emitter has an operating handle at its end, which makes it easy for users to hold and slide the laser emitter, improving the convenience and accuracy of operation.

[0014] Preferably, the scale lines on the scale plate are a series of concentric arcs, the center of which is located on the axis of the pipe pile. The zero-point scale line on the scale plate and the zero-point scale line of the slide are perpendicularly distanced from the outer surface of the pipe pile, so that the reading is independent of the slight positional change of the sliding seat in the circumferential direction of the pipe pile, thereby eliminating the measurement error caused by circumferential misalignment and further improving the reliability of the test data. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the overall structure in an embodiment of this utility model;

[0016] Figure 2 This is a schematic diagram of the connection structure between the inner support arm and the mounting beam in an embodiment of this utility model.

[0017] Figure 3 This is a schematic diagram of the main structure of the scale plate in an embodiment of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Pipe pile; 2. Sliding seat; 3. Inner support arm; 4. Connecting rod; 5. Mounting beam; 6. Laser emitter; 7. Scale plate; 8. Level; 9. Operating handle. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments. The purpose of this description is only to better understand the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0020] like Figure 1-3 As shown, this embodiment provides a portable internal support inclination measuring device for detecting the straightness of a PHC pipe pile 1. It includes a sliding seat 2 that slides on the surface of the pipe pile 1 and a set of internal support arms 3. The internal support arms 3 have an arc-shaped engaging section adapted to the inner wall of the pipe pile 1 and an installation section extending out of the pipe pile 1. An adjustable connecting rod 4 is provided between the engaging sections. A horizontally arranged installation beam 5 is symmetrically fixed on the outer side of the positioning section. A graduated groove is opened on the installation beam 5 along its length. A laser emitter 6 is slidably engaged in the groove. A long operating port is provided on the top of the installation beam 5. The opening and closing of the laser emitter 6 is controlled through the operating port. The beam emission direction of the laser emitter 6 is parallel to the axis of the pipe pile 1. A scale plate 7 with a plate surface perpendicular to the beam of the laser emitter 6 is provided on the sliding seat 2. The scale plate 7 is detachably installed on the sliding seat 2, for example, by means of a buckle, bolt or positioning pin.

[0021] Preferably, a level 8 is provided at the top end of the mounting beam 5, which facilitates the quick adjustment of the internal support reference to a horizontal state during installation, ensuring the accuracy of the measurement reference and providing a reliable basis for subsequent testing.

[0022] Preferably, the connecting rod 4 is a telescopic sleeve structure, which is equipped with a locking screw for locking the length, so that the device can adapt to PHC pipe piles 1 with different inner diameters. By adjusting the length of the connecting rod 4, a stable internal support can be achieved, which improves the versatility and applicability of the device.

[0023] Preferably, the inner surface of the arc-shaped engagement section is provided with textured surfaces to increase friction or is embedded with anti-slip pads, which increases the friction between the inner support arm 3 and the inner wall of the pipe pile 1, prevents the device from sliding during the testing process, and ensures the stability of the measurement benchmark.

[0024] Preferably, the laser emitter 6 has an operating handle 9 at its end. The operating handle 9 is L-shaped, with the horizontal section connected to the laser emitter 6 and the vertical section used for operation. This makes it convenient for the user to hold and slide the laser emitter 6, improving the ease and accuracy of operation. The horizontal section of the operating handle 9 can be a threaded rod section with a locking nut screwed onto it. The outer periphery of the locking nut near the mounting beam 5 has a protruding structure to prevent interference with the end of the laser emitter 6. When the laser emitter 6 is positioned, the locking nut can be tightened so that its protruding structure abuts against the mounting beam 5.

[0025] Preferably, the scale lines on the scale plate 7 are a series of concentric arcs, the centers of which are located on the axis of the pipe pile 1. The zero-point scale line on the scale plate 7 and the zero-point scale line of the slide groove are perpendicularly distanced from the outer surface of the pipe pile 1. This ensures that the reading is independent of slight positional changes of the sliding seat 2 in the circumferential direction of the pipe pile 1, thereby eliminating measurement errors introduced by circumferential misalignment and further improving the reliability of the test data. This is suitable for common pipe pile 1 specifications (such as Φ300, Φ400, Φ500) on construction sites. A prefabricated scale plate 7 (Φ600) and a sliding seat 2 are arc-shaped bases that match the curvature of the outer wall of the pipe pile 1. Rollers or low-friction sliders arranged along the axial direction of the pipe pile 1 can be installed on the inner side of the arc-shaped base to increase the contact area and stability. Specifically, when the device adjusts the length of the connecting rod 4 to ensure its arc-shaped locking section is stably supported within the inner wall of the port of a standard specification pipe pile 1 (e.g., a pipe pile 1 with an inner diameter of Φ400mm) and leveled, the vertical distance from the zero-point scale line of the sliding groove to the outer surface of the pipe pile 1 of that specification is determined to be a fixed value A. The prefabricated scale plate 7 for this specification has its zero-point scale line set to a fixed value A during manufacturing. Because the specifications of the pipe piles 1 on site are limited, manufacturing several specifications of scale plates 7 and sliding seats 2 is particularly convenient compared to traditional methods. Therefore, for each standard pipe diameter, the corresponding dedicated scale plate 7 is unique and pre-calibrated. In use, the operator selects the matching dedicated scale plate 7 and sliding seat 2 according to the specifications of the pipe pile 1 to be tested, thus ensuring that the core measurement condition of "equal distance between the center and the zero point" is met. This allows for accurate measurement on pipe piles of different specifications. It should be noted that, considering the manufacturing tolerances of the inner and outer diameters of actual pipe pile 1 products, the aforementioned "outer surface of pipe pile 1" in design and calibration refers to the nominal theoretical position of the outer wall of the pipe pile 1 of this specification, conforming to relevant national product standards (e.g., GB / T13476). The calibration of this device and its matching scale plate 7 is based on this nominal dimension. In testing practice, the small measurement systematic error caused by the dimensional tolerances of the pipe pile 1 is usually much smaller than the allowable deviation value of the straightness of the pile body. Moreover, this error is a systematic constant in the relative measurement of the entire pile body and does not affect the judgment of the straightness change trend and the point of deviation. Therefore, it does not affect the practicality and effectiveness of this device for engineering acceptance. In use, the operator selects a special scale plate 7 that matches the design distance according to the specifications of the pipe pile 1 to be measured and installs it on the sliding seat 2. This ensures that the core measurement conditions are met, so that measurements that meet the engineering accuracy requirements can be achieved on pipe piles 1 of different specifications.

[0026] In the specific operation process, first observe that the bubble of the level 8 is centered, quickly level the inner support reference, then adjust the length of the telescopic sleeve connecting rod 4 and lock it, so that the arc-shaped locking section of the pair of inner support arms 3 is stably supported on the inner wall of the pipe pile 1 port. At this time, the reference distance from the zero point of the slide groove to the outer surface of the pipe pile 1 is determined. The operator moves the laser emitter 6 in the slide groove and fixes it at the preset reference position through the operating handle 9 and records the reading A of the scale. Then, a laser beam parallel to the axis of the pipe pile 1 is emitted. The sliding seat 2 with the selected scale plate 7 is attached to the outer wall of the pipe pile 1, ensuring that the plate surface of the scale plate 7 is perpendicular to the laser beam. A single person can push the sliding seat 2 to move along the axis of the pipe pile 1 and directly read the reading B of the laser spot on the scale plate 7 at different axial positions. The straightness deviation value is |B - A|. By continuously measuring multiple positions along the pile body, the straightness deviation information of the entire pipe pile 1 can be quickly obtained and compared with the allowable value of the specification.

[0027] The above description is merely a preferred embodiment of the present utility model and does not limit the scope of the present utility model. All equivalent changes made based on the content of the present utility model specification and its drawings are included within the scope of the present utility model.

Claims

1. A portable internal support inclination measuring device for detecting the straightness of PHC pipe piles, characterized in that: It includes a sliding seat that slides on the surface of the pipe pile and a set of inner support arms. The inner support arms have an arc-shaped engaging section that fits the inner wall of the pipe pile and an installation section that extends out of the pipe pile. There are adjustable connecting rods between the engaging sections. A horizontally arranged installation beam is symmetrically fixed on the outside of the positioning section. A graduated groove is opened on the installation beam along the length direction. A laser emitter is slidably engaged in the groove. The beam of the laser emitter is parallel to the axis of the pipe pile. A graduated plate with a plate surface perpendicular to the beam of the laser emitter is provided on the sliding seat.

2. The portable internal support inclination measuring device for detecting the straightness of PHC pipe piles according to claim 1, characterized in that: A level is installed at the top end of the mounting beam.

3. The portable internal support inclination measuring device for detecting the straightness of PHC pipe piles according to claim 2, characterized in that: The connecting rod is a telescopic sleeve structure, and the telescopic sleeve structure is equipped with a locking screw for locking the length.

4. The portable internal support inclination measuring device for detecting the straightness of PHC pipe piles according to claim 1, characterized in that: The inner surface of the arc-shaped engagement section is provided with textured surfaces to increase friction or is embedded with anti-slip pads.

5. The portable internal support inclination measuring device for detecting the straightness of PHC pipe piles according to claim 1, characterized in that: An operating handle is located at the end of the laser emitter.

6. The portable internal support inclination measuring device for detecting the straightness of PHC pipe piles according to claim 1, characterized in that: The scale lines on the scale plate are a series of concentric arcs, the center of which is located on the axis of the pipe pile. The zero point scale line on the scale plate and the zero point scale line of the slide are equidistant from the outer surface of the pipe pile.

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