Cast-in-place pile hole perpendicularity detection device

Abstract

The utility model discloses a cast-in-place pile hole perpendicularity detection device, which belongs to the field of building measurement and comprises a plumb bob, a suspension wire connected with the plumb bob and a support structure used for supporting and positioning the plumb bob. The support structure comprises a sleeve sleeving the suspension wire, a plurality of supporting plates hinged to the end, away from the plumb bob, of the sleeve, and extension plates inserted into the ends, away from the sleeve, of the supporting plates. The fixing plate is fixedly connected to the end, away from the plumb bob, of the supporting plate, and the positioning groove is formed in the sleeve and used for positioning and supporting when the fixing plate rotates from the vertical state to the horizontal state. Through the stable support structure, stable lifting of the plumb bob in the detection process is ensured, and measurement errors caused by external factors are reduced. The design of the support structure enables the installation and disassembly of the device to be simple and fast, no complex preparation work is needed, the detection efficiency is improved, the whole device is compact in structure and convenient to carry and store, and the transportation and storage cost is reduced.

Description

Technical Field

[0001] This application relates to the field of building surveying technology, specifically a device for detecting the verticality of cast-in-place pile holes. Background Technology

[0002] In construction engineering, the verticality of the bored pile hole is one of the key factors ensuring structural safety and stability. Traditionally, to measure this crucial indicator, inspectors often rely on a relatively primitive method: first, they find a roller on the construction site as a support foundation, and then use this roller to temporarily construct a simple support structure at the end of the bored pile hole. The main function of this support structure is to provide a stable suspension point for the subsequent testing tool—a plumb bob. During the inspection, the plumb bob is connected to the support structure by a suspension line, and by manually loosening and pulling the suspension line, the plumb bob can move freely up and down within the bored pile hole. By observing the plumb bob's trajectory within the hole and its contact with the hole wall, inspectors can make a preliminary judgment on the verticality of the bored pile hole.

[0003] The implementation of this method is highly dependent on the availability of suitable rollers as a support foundation on the construction site. If site conditions are limited and sufficient rollers or suitable locations cannot be found, the testing work will be impossible, seriously affecting the project schedule and quality control.

[0004] Therefore, this application provides a device for detecting the verticality of cast-in-place pile holes to solve the above-mentioned problems. Utility Model Content

[0005] This application provides a verticality detection device for cast-in-place pile holes, which aims to solve the problems mentioned in the background art, such as the inability of existing support rods to be integrated with the plumb bob for storage, and the need to find rollers as support rods for the plumb bob when using it again.

[0006] To achieve the above objectives, this application provides the following technical solution: a verticality detection device for cast-in-place pile holes, comprising a plumb bob, a plumb line connected to the plumb bob, and a support structure for supporting and positioning the plumb bob;

[0007] Unlike existing verticality testing devices for cast-in-place pile holes, this device features a support structure for positioning a plumb bob at the hole's port. This support structure includes a sleeve fitted onto the suspension line, several support plates hinged to the sleeve at the end away from the plumb bob, an extension plate inserted into the support plate at the end away from the sleeve, a fixing plate fixedly connected to the support plate at the end away from the plumb bob, and a positioning groove on the sleeve for positioning the fixing plate when rotating from a vertical to a horizontal position. During verticality testing, the extension plate, initially parallel to the sleeve, is rotated until the sleeve is vertical. At this point, the fixing plate is embedded in the positioning groove. The extension plate is then pulled out from the support plate and positioned at the hole's port. Finally, by loosening the suspension line, the plumb bob is allowed to move freely up and down within the hole. Observing its trajectory and contact with the hole wall allows for determination of the hole's verticality. The entire testing process is simple, quick, and yields accurate and reliable results.

[0008] Preferably, to limit the length of the extension plate extending on the support plate, a limiting groove is provided on the support plate, and a limiting plate is fixedly connected to the end of the extension plate away from the plumb bob. The limiting plate is slidably inserted into the limiting groove. The cooperation between the limiting groove and the limiting plate effectively prevents the extension plate from shaking or shifting during use, thereby enhancing the stability of the entire support structure. The stable support structure makes the movement trajectory of the plumb bob more accurate during the testing process, thus improving the accuracy of verticality testing.

[0009] Preferably, to facilitate precise adjustment of the lengths of the support plate and extension plate according to the diameter of the pile hole, ensuring that the sleeve is positioned in the middle of the pile hole, the support plate is provided with graduations on its side corresponding to the limiting groove, which cooperate with the limiting plate. The introduction of these graduations makes the length adjustment of the extension plate more precise, helping to ensure that the sleeve is accurately positioned in the middle of the pile hole, thereby improving the accuracy of verticality detection.

[0010] Preferably, to lock the adjusted length of the extension plate and the support plate: a screw for fixing the position of the extension plate is threaded into the end of the support plate near the plumb bob, and the end of the screw near the extension plate contacts the extension plate. The locking mechanism of the screw effectively prevents the extension plate from moving or shaking due to external forces during use, ensuring the overall stability of the support structure. The position of the extension plate can be quickly locked and unlocked by rotating the screw, simplifying the operation process and improving work efficiency.

[0011] Preferably, to facilitate the integrated storage and transport of the lead hammer and support structure after use: the top of the lead hammer is fixedly connected to an externally threaded sleeve, and the end of the sleeve near the lead hammer has an internally threaded groove for the externally threaded sleeve to be threaded into. This integrated design of the lead hammer and support structure allows the entire testing device to be compactly assembled when not in use, significantly saving storage space and facilitating carrying and transportation by testing personnel. By fixing the lead hammer to the support structure, the risk of losing the lead hammer separately during handling or storage is reduced, ensuring the integrity of the testing tool.

[0012] Preferably, to facilitate the positioning of the support plate after use: a retaining holder is fixedly connected to the end of the sleeve near the plumb bob, and the retaining holder has a slot for storing and engaging the support plate. The design of the retaining holder and slot allows the support plate to be securely fixed to the sleeve when not in use, preventing damage or loss due to careless placement, and also improving the stability of the entire device. The close fit between the retaining holder and slot achieves integrated storage with the sleeve, making the entire testing device more compact and lightweight, facilitating carrying and transportation by testing personnel. When testing is required again, the testing personnel can quickly remove the support plate from the slot and install it in the desired position without needing to find or fix the support plate separately, thereby improving the efficiency of the testing work.

[0013] Preferably, for convenient storage of the suspension wire: a reel is inserted into the end of the sleeve furthest from the plumb bob, and the suspension wire is wound around the reel. The design of the reel allows the inspector to easily control the winding and unwinding of the suspension wire without additional tools or complicated operations, greatly improving the convenience of the inspection work. Winding the suspension wire around the reel effectively avoids damage caused by tangling or knotting during transport or storage, extending the service life of the suspension wire.

[0014] This application utilizes a robust support structure to ensure stable lifting and lowering of the plumb bob during testing, reducing measurement errors caused by external factors. The support structure design simplifies and expedites installation and disassembly, eliminating the need for complex preparation and improving testing efficiency. The adjustable design of the extension and support plates allows the device to adapt to different sizes and shapes of cast-in-place pile holes, enhancing its practicality and flexibility. The compact structure of the entire device facilitates portability and storage, reducing transportation and storage costs. Attached Figure Description

[0015] Figure 1 A schematic diagram of a device for detecting the verticality of a cast-in-place pile hole;

[0016] Figure 2 for Figure 1 The structural sectional view in the middle;

[0017] Figure 3 This is a schematic diagram of the structure connecting the support plate and the extension plate;

[0018] Figure 4 An exploded view showing the connection between the sleeve, the plumb bob, and the winding reel.

[0019] In the picture:

[0020] 1. Plumb bob; 11. External threaded sleeve; 2. Suspension line; 3. Support structure; 31. Sleeve; 311. Internal threaded groove; 32. Support plate; 321. Limiting groove; 322. Scale; 323. Screw; 33. Extension plate; 331. Limiting plate; 34. Fixing plate; 35. Positioning groove; 4. Card holder; 41. Card slot; 5. Rewinding reel. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0022] This embodiment provides a device for detecting the verticality of cast-in-place pile holes, such as... Figure 1-4 As shown, the testing device includes a plumb bob 1, a suspension line 2 connected to the plumb bob 1, and a support structure 3 for supporting and positioning the plumb bob 1.

[0023] Unlike existing verticality testing devices for cast-in-place pile holes, this device features a support structure 3. This support structure includes a sleeve 31 mounted on the plumb line 2, several support plates 32 hinged to the sleeve 31 at the end away from the plumb bob 1, an extension plate 33 inserted into the support plate 32 at the end away from the sleeve 31, a fixing plate 34 fixedly connected to the support plate 32 at the end away from the plumb bob 1, and a positioning groove 35 on the sleeve 31 for positioning the fixing plate 34 when it rotates from a vertical to a horizontal position. This robust support structure 3 ensures stable lifting and lowering of the plumb bob 1 during testing, reducing measurement errors caused by external factors. The design of the support structure 3 simplifies installation and disassembly, eliminating the need for complex preparation and improving testing efficiency. The adjustable design of the extension plate 33 and support plate 32 allows the device to adapt to cast-in-place pile holes of different sizes and shapes, enhancing its practicality and flexibility. The entire device has a compact structure, making it easy to carry and store, thus reducing transportation and storage costs. When testing the verticality of the cast-in-place pile hole, the extension plate 33, which is parallel to the sleeve 31, is rotated until the sleeve 31 is perpendicular. At this point, the fixing plate 34 is embedded in the positioning groove 35. Then, the extension plate 33 is pulled out from inside the support plate 32 and placed at the end of the cast-in-place pile hole. Finally, by loosening the suspension line 2, the plumb bob 1 is controlled to rise and fall freely within the hole. Observing its movement trajectory and contact with the hole wall allows the determination of the verticality of the cast-in-place pile hole. The entire testing process is simple, quick, and yields accurate and reliable results.

[0024] Specifically, to limit the length of the extension plate 33 extending on the support plate 32, a limiting groove 321 is provided on the support plate 32, and a limiting plate 331 is fixedly connected to the end of the extension plate 33 away from the plumb bob 1. The limiting plate 331 is slidably inserted into the limiting groove 321. The cooperation between the limiting groove 321 and the limiting plate 331 effectively prevents the extension plate 33 from shaking or shifting during use, thereby enhancing the stability of the entire support structure 3. The stable support structure 3 makes the movement trajectory of the plumb bob 1 more accurate during the testing process, thereby improving the accuracy of the verticality test. The design of the limiting groove 321 allows the extension length of the extension plate 33 to be flexibly adjusted as needed, meeting the testing requirements of different diameter cast-in-place pile holes. When performing verticality testing of cast-in-place pile holes, the extension plate 33 is pulled out of the support plate 32 by an appropriate length according to the required hole diameter. During this process, the limiting plate 331 will move smoothly along the inside of the limiting groove 321 until the required extension length is reached. Next, the extension plate 33 is placed at the end of the bored pile hole, ensuring it is stable and free from wobbling. Finally, the plumb bob 1 is freely raised and lowered within the hole by loosening the suspension line 2, and its trajectory and contact with the hole wall are observed to determine the verticality of the bored pile hole. The entire testing process becomes more stable, accurate, and safe due to the addition of the limiting mechanism.

[0025] Furthermore, to facilitate precise adjustment of the lengths of the support plate 32 and the extension plate 33 according to the diameter of the pile hole, ensuring that the sleeve 31 is positioned in the middle of the pile hole, the support plate 32, corresponding to the limiting groove 321, is provided with a scale 322 that works in conjunction with the limiting plate 331. The introduction of the scale 322 makes the length adjustment of the extension plate 33 more precise, helping to ensure that the sleeve 31 is accurately positioned in the middle of the pile hole, thereby improving the accuracy of verticality testing. Inspectors no longer need to repeatedly try and find the appropriate extension length; they can simply read and adjust to the corresponding scale 322 based on the diameter of the pile hole, greatly simplifying the operation. Before testing the verticality of the pile hole, inspectors first preset a suitable extension length on the support plate 32 according to the diameter of the hole using the scale 322. Subsequently, the extension plate 33 is pulled out from the support plate 32, and the scale number 322 corresponding to the sliding of the limiting plate 331 in the limiting groove 321 is observed until the preset value is reached. At this time, the length of the extension plate 33 has been precisely adjusted to the required length and can be stably erected at the end of the grouting pile hole. Next, the sleeve 31 is placed on the extension plate 33, ensuring that it is located in the middle of the hole. Finally, the plumb bob 1 is controlled to rise and fall freely in the hole by loosening the suspension line 2, and its movement trajectory and contact with the hole wall are observed to complete the verticality test. Throughout the process, the precise indication and adjustment function of the scale number 322 plays a key role.

[0026] Specifically, to lock the length of the extension plate 33 and the support plate 32, a screw 323 for fixing the position of the extension plate 33 is threaded into the end of the support plate 32 near the plumb bob 1. The end of the screw 323 near the extension plate 33 contacts the extension plate 33. The locking mechanism of the screw 323 effectively prevents the extension plate 33 from moving or shaking due to external forces during use, ensuring the overall stability of the support structure 3. The position of the extension plate 33 can be quickly locked and unlocked by rotating the screw 323, simplifying the operation process and improving work efficiency. Before testing the verticality of the bored pile hole, the length of the extension plate 33 is first adjusted according to the hole diameter, and the accuracy of the adjustment is ensured by the limiting groove 321 and the scale 322. Then, the extension plate 33 is placed at the hole opening, and the screw 323 on the support plate 32 is rotated. As the screw 323 rotates and goes deeper, its end gradually contacts the extension plate 33 and applies pressure. When sufficient locking force is achieved, screw 323 securely fixes extension plate 33 to support plate 32. At this point, sleeve 31 can be safely placed on extension plate 33, and plumb bob 1 can be controlled to perform verticality testing within the hole by loosening suspension line 2. Throughout the process, the locking mechanism of screw 323 provides strong assurance for the stable operation of the device.

[0027] Furthermore, to facilitate the integrated storage and transport of the lead hammer 1 and support structure 3 after use, an externally threaded sleeve 11 is fixedly connected to the top of the lead hammer 1. The sleeve 31, near the end of the lead hammer 1, has an internally threaded groove 311 for threaded insertion of the externally threaded sleeve 11. This integrated design of the lead hammer 1 and support structure 3 allows the entire testing device to be compactly assembled when not in use, significantly saving storage space and facilitating carrying and transportation by testing personnel. By fixing the lead hammer 1 to the support structure 3, the risk of the lead hammer 1 being lost during handling or storage is reduced, ensuring the integrity of the testing tool. The threaded connection design makes the assembly and disassembly of the lead hammer 1 and support structure 3 simple and quick, requiring no additional tools or complex operating procedures. After the testing task is completed, the testing personnel first ensure that the lead hammer 1 is in a safe and stable state and clean any impurities that may be attached to the lead hammer 1 and support structure 3. Next, align the external threaded sleeve 11 at the top of the plumb bob 1 with the internal threaded groove 311 on the sleeve 31, and gently rotate the plumb bob 1 so that the external threaded sleeve 11 gradually screws into the internal threaded groove 311. As the rotation continues, the connection between the plumb bob 1 and the sleeve 31 will become increasingly tighter until it reaches a completely fixed state. At this point, the entire testing device has achieved an integrated connection and can be safely stored or carried to the next testing location. When testing is required again, simply rotate the plumb bob 1 in the opposite direction to easily separate it from the support structure 3 and return it to the testing state.

[0028] Furthermore, to facilitate the positioning of the support plate 32 after use, a retaining holder 4 is fixedly connected to the end of the sleeve 31 near the plumb bob 1. The retaining holder 4 has a slot 41 for storing and engaging the support plate 32. The design of the retaining holder 4 and the slot 41 allows the support plate 32 to be securely fixed to the sleeve 31 when not in use, preventing damage or loss due to careless placement, and also improving the stability of the entire device. The support plate 32, through the tight fit between the slot 41 and the retaining holder 4, achieves integrated storage with the sleeve 31, making the entire testing device more compact and lightweight, and easier for testing personnel to carry and transport. When testing is required again, the testing personnel can quickly remove the support plate 32 from the slot 41 and install it in the required position without having to find or fix the support plate 32 separately, thereby improving the efficiency of the testing work. Combining the threaded connection design of the plumb bob 1 and the sleeve 31, when the plumb bob 1 is stored at the bottom of the sleeve 31, its top end contacts the bottom end of the extension plate 33, forming an additional lock on the support plate 32. When the plumb bob 1 is released, the support plate 32 can be easily removed from the slot 41, achieving intelligent locking and unlocking functions. After using the testing device, the testing personnel first screw the plumb bob 1 into the internal threaded groove 311 of the sleeve 31 through the external threaded sleeve rod 11, achieving an integrated connection with the sleeve 31. At this time, the top end of the plumb bob 1 will naturally droop and contact the bottom end of the extension plate 33. Due to the weight of the plumb bob 1 and the supporting effect of the extension plate 33, the support plate 32 will be firmly pressed into the slot 41, achieving positional fixation. When the support plate 32 needs to be used again, the inspector only needs to rotate the plumb bob 1 in the reverse direction to remove it from the sleeve 31. At this time, the support plate 32 will no longer be restricted by the plumb bob 1 and can be easily removed from the slot 41 and installed in the required position. Throughout the process, the design of the holder 4 and the slot 41 provides a reliable guarantee for the storage and fixation of the support plate 32.

[0029] Furthermore, to facilitate the storage of the suspension line 2: a reel 5 is inserted into the end of the sleeve 31 furthest from the plumb bob 1, and the suspension line 2 is wound around the reel 5. The design of the reel 5 allows the inspector to easily control the winding and unwinding of the suspension line 2 without additional tools or complex operations, greatly improving the convenience of the inspection work. Winding the suspension line 2 around the reel 5 effectively avoids damage caused by tangling or knotting during transport or storage, extending the service life of the suspension line 2. After the inspection is completed, the reel 5 can be easily inserted into the top of the sleeve 31, achieving integrated storage with the entire inspection device, saving space and making it easy to carry. By quickly winding and unwinding the suspension line 2, the inspector can more efficiently control the lifting and lowering movement of the plumb bob 1 within the grouting pile hole, thereby accelerating the inspection speed and improving work efficiency. When using this inspection device, the inspector first inserts the reel 5 into the top of the sleeve 31 and ensures a secure connection. Subsequently, the inspector can hold the reel 5 and control the winding and unwinding of the plumb line 2 by rotating the reel 5. When it is necessary to check the verticality of the cast-in-place pile hole, the inspector can gradually release the plumb line 2, allowing the plumb bob 1 to descend freely along the inner wall of the hole under gravity. During the descent, the inspector can observe the trajectory of the plumb bob 1 and its contact with the hole wall to determine the verticality of the hole. After the inspection is completed, the inspector can rotate the reel 5 in the opposite direction to rewind the plumb line 2 onto the reel 5 and insert the reel 5 back into the top of the sleeve 31 for storage. Throughout the process, the design of the reel 5 provides great convenience for the storage and unwinding of the plumb line 2.

[0030] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A verticality detection device for cast-in-place pile holes, comprising a plumb bob (1), a plumb line (2) connected to the plumb bob (1), and a support structure (3) for supporting and positioning the plumb bob (1); Its features are: The support structure (3) includes a sleeve (31) fitted on the suspension line (2), a plurality of support plates (32) hinged to the end of the sleeve (31) away from the plumb bob (1), an extension plate (33) inserted into the end of the support plate (32) away from the sleeve (31), a fixing plate (34) fixedly connected to the end of the support plate (32) away from the plumb bob (1), and a positioning groove (35) formed on the sleeve (31) for positioning support when the fixing plate (34) rotates from a vertical state to a horizontal state.

2. The verticality detection device for cast-in-place pile holes according to claim 1, characterized in that: A limiting groove (321) is provided on the support plate (32), and a limiting plate (331) is fixedly connected to one end of the extension plate (33) away from the plumb bob (1). The limiting plate (331) is slidably inserted into the limiting groove (321).

3. The verticality detection device for cast-in-place pile holes according to claim 2, characterized in that: The support plate (32) is provided with a scale (322) on the side corresponding to the limiting groove (321) for use with the limiting plate (331).

4. The verticality detection device for cast-in-place pile holes according to claim 1, characterized in that: The support plate (32) has a screw (323) threaded into one end near the plumb bob (1) for fixing the position of the extension plate (33), and the end of the screw (323) near the extension plate (33) is in contact with the extension plate (33).

5. The verticality detection device for cast-in-place pile holes according to claim 1, characterized in that: The top end of the plumb bob (1) is fixedly connected to an external threaded sleeve (11), and the sleeve (31) near the plumb bob (1) has an internal threaded groove (311) for the external threaded sleeve (11) to be threadedly inserted.

6. The verticality detection device for cast-in-place pile holes according to claim 1, characterized in that: The sleeve (31) is fixedly connected to a retaining seat (4) at one end near the plumb bob (1), and the retaining seat (4) has a slot (41) for the support plate (32) to be received and engaged.

7. The verticality detection device for cast-in-place pile holes according to claim 1, characterized in that: The sleeve (31) is connected to a winding reel (5) at the end away from the plumb bob (1), and the suspension line (2) is wound around the winding reel (5).

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