Loading force detection device for building pile foundation

Abstract

The utility model relates to the technical field of pile foundation load capacity detection, and discloses a load capacity detection device for a building pile foundation, the load capacity detection device comprises a bearing frame, four supporting columns and two extension frames, the bottom end of the bearing frame is fixedly connected with four positioning columns arranged in a rectangular array, and the four positioning columns are fixedly connected with the bottom end of the bearing frame; the bottom ends of the outer walls of the four positioning columns are fixedly connected with four sliding plates arranged in an annular array mode, four first sliding grooves arranged in an annular array mode are formed in the four supporting columns, second sliding grooves are formed in the two sides of the bearing frame, and a plurality of positioning rods are fixedly connected to one sides of the two second sliding grooves. And a plurality of positioning holes are formed in one sides of the two extension frames. The load capacity detection device for the building pile foundation is mainly composed of the bearing frame, the supporting column, the extending frame and other key components, excessive complex structures are avoided, the conciseness not only reduces the manufacturing cost, but also enables the device to be easier to maintain, and the device has the advantages of being simple in structure, convenient to maintain, high in safety and the like.

Description

Technical Field

[0001] This application relates to the field of pile foundation load capacity testing technology, specifically a load capacity testing device for building pile foundations. Background Technology

[0002] Building pile foundations are typically low-cap pile foundations. Pile foundations are widely used in high-rise buildings. To ensure the quality of building projects, it is essential to test the bearing capacity of the foundation and pile foundations during the construction process.

[0003] An existing patent (publication number: CN217840122U) discloses a building pile foundation load capacity testing device, including a pile foundation body, a cover plate fitted on the top of the pile foundation body, a jack fixedly connected to the top of the cover plate, a placement box fixedly connected to the top of the jack, motors fixedly connected to both sides of the bottom of the placement box, threaded rods fixedly connected to the output ends of the two motors on opposite sides, threaded sleeves fitted on the surface of the threaded rods, and pressure plates provided on both sides of the top of the placement box.

[0004] The aforementioned comparative document points out that this utility model, by incorporating a motor, threaded rod, threaded sleeve, pressure plate, handwheel, screw, clamping plate, top plate, support rod, second spring, adjusting block, cylinder, and push rod, solves the problem of insufficient stability in fixing the counterweight in existing building pile foundation load capacity testing devices, which is prone to falling off. This building pile foundation load capacity testing device has the advantage of stable fixing of the counterweight and preventing it from falling off, and is worth promoting. However, this device contains multiple mechanical components, such as a motor, threaded rod, threaded sleeve, pressure plate, handwheel, screw, clamping plate, top plate, support rod, second spring, adjusting block, cylinder, and push rod. The assembly and maintenance of these components are relatively complex, increasing the cost of use and maintenance. Complex devices often mean more potential failure points. Components such as the motor, threaded connection, and spring may malfunction due to wear, loosening, or damage, affecting the normal operation of the device. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a load-bearing capacity testing device for building pile foundations, which has the advantages of simple structure and easy maintenance. It solves the problem that the device contains multiple mechanical components, such as motors, threaded rods, threaded sleeves, screws, second springs, adjusting blocks, cylinders, and push rods. The assembly and maintenance of these components are relatively complex, increasing the cost of use and maintenance. Complex devices often mean more potential failure points. Components such as motors, threaded connections, and springs may malfunction due to wear, loosening, or damage, thus affecting the normal operation of the device.

[0006] To achieve the above objectives, this application provides the following technical solution: a load-bearing capacity testing device for building pile foundations, comprising a support frame, four support columns, and two extension frames. The bottom end of the support frame is fixedly connected to four positioning columns arranged in a rectangular array. The bottom end of the outer wall of each of the four positioning columns is fixedly connected to four sliding plates arranged in a circular array. The interior of each of the four support columns is provided with four first sliding grooves arranged in a circular array. The two sides of the support frame are provided with second sliding grooves. Multiple positioning rods are fixedly connected to one side of each of the two second sliding grooves. Multiple positioning holes are provided on one side of each of the two extension frames.

[0007] The device, based on the above design, mainly consists of key components such as a support frame, support columns, and an extension frame. It avoids excessive structural complexity, which not only reduces manufacturing costs but also makes maintenance easier. Four support columns provide a stable foundation, while the support frame, through its sliding arrangement with positioning columns and a sliding plate within the first groove, ensures stability during load testing. This design helps reduce tilting of the support frame during ascent, improving test accuracy and minimizing the risk of counterweights falling due to tilting. The extension frame, slidably connected to the support frame via positioning rods and holes, expands the support frame's volume to accommodate more counterweights. Furthermore, the side walls of the support frame and extension frame prevent counterweights from falling. This device boasts advantages such as simple structure, ease of maintenance, and high safety.

[0008] Furthermore, each of the four support columns has four reinforcing ribs fixedly connected to its outer wall in a circular array, and each of the four support columns has a base plate fixedly connected to its bottom end. The ends of the multiple reinforcing ribs away from the support columns are fixedly connected to the base plate.

[0009] The above-mentioned design enhances the structural strength of the support column by adding reinforcing ribs, making the entire device more stable under load. This helps reduce deformation during testing and improves test accuracy. By fixing one end of the reinforcing rib to the support column and connecting the other end to the base plate, a more robust support structure is formed, improving the device's load-bearing capacity and enabling it to meet greater load testing requirements.

[0010] Furthermore, the bottom end of the support frame is fixedly connected to four mounting seats arranged in a rectangular array. Each of the four mounting seats is fixedly connected to an electric push rod. The telescopic ends of the four electric push rods are fixedly connected to a connecting plate. The upper ends of the four connecting plates are fixedly connected to the extension frame in pairs.

[0011] Through the above scheme, the telescopic function of the electric push rod allows the extension frame to extend and retract as needed, thereby adjusting the volume of the support frame. This enables the device to adapt to test objects of different sizes or with different load requirements, improving the flexibility and applicability of the device.

[0012] Furthermore, a hydraulic rod is fixedly connected to the bottom end of the support frame, a pressure detector is fixedly connected to the bottom end of the hydraulic rod, and a pressure plate is fixedly connected to the bottom end of the pressure detector.

[0013] Through the above scheme, the setting of the pressure detector enables the device to accurately measure and record the load force applied to the pile foundation, providing data for assessing the bearing capacity of the pile foundation. The hydraulic rod has a high degree of controllability and can accurately adjust the contact pressure between the pressure plate and the pile foundation.

[0014] Furthermore, the bottom end of the support frame is fixedly connected to two brackets arranged in a mirror image, and a collar is fixedly connected between the two brackets.

[0015] Through the above scheme, the two mirror-distributed supports provide stable support for the support frame, effectively reducing shaking or tilting during the test, enhancing the stability of the device, and ensuring the safety of the test process. The collar is slidably set on the outer wall of the pile, which allows the device to be quickly and accurately fixed on the pile, so that the pressure plate is in stable contact with the pile.

[0016] Furthermore, the pressure plate is slidably disposed between the two supports.

[0017] The above method uses a hydraulic rod to provide downward pressure, causing the pressure plate to move downwards and between the two supports.

[0018] Furthermore, both of the extension frames are slidably disposed in the second slide groove, and the plurality of positioning rods are slidably disposed inside the positioning hole.

[0019] With the above solution, when the extension frame slides in the slide groove for telescopic adjustment, the sliding of the positioning rod in the positioning hole ensures that the extension frame will not shake or shift during the telescopic process, thereby maintaining the overall stability of the device.

[0020] Furthermore, all four positioning posts are slidably disposed inside the support post, and all the multiple sliding plates are slidably disposed inside the first sliding groove.

[0021] With the above scheme, during testing, the positioning column is slidably set inside the support base to prevent the support frame from tilting during movement. It also slides in the first groove through multiple sliding plates, thereby limiting the position of the positioning column and preventing the positioning column from falling off the support column.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] This invention relates to a load-bearing capacity testing device for building pile foundations. The device mainly consists of key components such as a support frame, support columns, and an extension frame. Its simple structure reduces manufacturing costs and simplifies maintenance. Four support columns provide a stable foundation, while the support frame, through its sliding arrangement with positioning columns and a sliding plate within a first groove, ensures stability during load testing. This design helps reduce tilting during ascent, improving test accuracy and minimizing counterweight fall due to tilting. The extension frame, slidably connected to the support frame via positioning rods and holes, expands the support frame's volume to accommodate more counterweights. Furthermore, the side walls of the support frame and extension frame prevent counterweights from falling. This device boasts advantages such as simple structure, ease of maintenance, and high safety. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this application;

[0025] Figure 2 This is a schematic diagram of the supporting structure of this application.

[0026] Figure 3 This is a schematic diagram of the support frame adjustment structure of this application.

[0027] Figure 4 This is a schematic diagram of the pressing device structure of this application.

[0028] In the picture:

[0029] 1. Support bracket; 2. Positioning column; 3. Slide plate; 4. Support column; 5. First slide groove; 6. Reinforcing rib; 7. Base plate; 8. Second slide groove; 9. Positioning rod; 10. Extension frame; 11. Positioning hole; 12. Mounting base; 13. Electric push rod; 14. Connecting plate; 15. Hydraulic rod; 16. Pressure detector; 17. Pressure plate; 18. Bracket; 19. Collar. Detailed Implementation

[0030] 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 skilled in the art without creative effort are within the scope of protection of this application.

[0031] Please see Figure 1 , Figure 2 and Figure 3This embodiment of a load-bearing capacity testing device for building pile foundations includes a support frame 1, four support columns 4, and two extension frames 10. The bottom of the support frame 1 is fixedly connected to four positioning columns 2 arranged in a rectangular array. The bottom of the outer walls of each of the four positioning columns 2 is fixedly connected to four sliding plates 3 arranged in a circular array. Each of the four support columns 4 has four first sliding grooves 5 arranged in a circular array inside. The four support columns 4 provide a stable support foundation. The support frame 1, through the sliding arrangement of the positioning columns 2 and sliding plates 3 within the first sliding grooves 5, ensures stability during load testing. Second sliding grooves 8 are provided on both sides of the support frame 1. Multiple positioning rods 9 are fixedly connected to one side of each of the two second sliding grooves 8. Multiple positioning holes 11 are provided on one side of each of the two extension frames 10. The extension frames 10 and the support frame 1 are slidably connected through the positioning rods 9 and positioning holes 11, which expands the volume of the support frame 1 to accommodate more counterweights and prevents the counterweights from falling off through the side walls of the support frame 1 and the extension frames 10.

[0032] Please see Figure 1 and Figure 3 Each of the four support columns 4 has four reinforcing ribs 6 fixedly connected to its outer wall in a circular array. A base plate 7 is fixedly connected to the bottom of each of the four support columns 4. The ends of the reinforcing ribs 6 furthest from the support columns 4 are fixedly connected to the base plate 7. The reinforcing ribs 6 enhance the structural strength of the support columns 4, making the entire device more stable under load, helping to reduce deformation during testing and improve testing accuracy. By fixing one end of the reinforcing rib 6 to the support column 4 and the other end to the base plate 7, a more robust support structure is formed, improving the load-bearing capacity of the device. To meet the demands of larger load testing, the support frame 1 has four mounting bases 12 arranged in a rectangular array fixedly connected to its bottom. Each of the four mounting bases 12 has an electric push rod 13 fixedly connected inside. The telescopic ends of the four electric push rods 13 are all fixedly connected to connecting plates 14. The upper ends of the four connecting plates 14 are fixedly connected to the extension frame 10 in pairs. The telescopic function of the electric push rods 13 allows the extension frame 10 to extend or retract as needed, thereby adjusting the volume of the support frame 1. This enables the device to adapt to test objects of different sizes or with different load requirements, improving the flexibility and applicability of the device.

[0033] Please see Figure 2 , Figure 3 and Figure 4A hydraulic rod 15 is fixedly connected to the bottom end of the support frame 1. A pressure detector 16 is fixedly connected to the bottom end of the hydraulic rod 15. A pressure plate 17 is fixedly connected to the bottom end of the pressure detector 16. The setting of the pressure detector 16 enables the device to accurately measure and record the load force applied to the pile foundation, providing data for evaluating the bearing capacity of the pile foundation. The hydraulic rod 15 has a high degree of controllability and can accurately adjust the contact pressure between the pressure plate 17 and the pile foundation. Two mirror-distributed brackets 18 are fixedly connected to the bottom end of the support frame 1. A collar 19 is fixedly connected between the two brackets 18. The two mirror-distributed brackets 18 provide stable support for the support frame 1, effectively reducing shaking or tilting during the test, enhancing the stability of the device, and ensuring the safety of the test process. The collar 19 is slidably set on the outer wall of the pile, allowing the device to be quickly and accurately fixed to the pile, so that the pressure plate 17 and the pile foundation are aligned. The pile is in stable contact. The pressure plate 17 is slidably set between the two supports 18. The hydraulic rod 15 provides downward pressure, causing the pressure plate 17 to move downward and between the two supports 18. Both extension frames 10 are slidably set in the second slide groove 8. Multiple positioning rods 9 are slidably set inside the positioning holes 11. When the extension frame 10 slides in the slide groove for telescopic adjustment, the sliding of the positioning rods 9 in the positioning holes 11 ensures that the extension frame 10 will not shake or shift during telescopic movement, thus maintaining the overall stability of the device. Four positioning columns 2 are slidably set inside the support column 4. Multiple sliding plates 3 are slidably set inside the first slide groove 5. During testing, the positioning columns 2 are slidably set inside the support seat to prevent the support frame 1 from tilting during movement. The multiple sliding plates 3 slide in the first slide groove 5, thereby limiting the position of the positioning columns 2 and preventing the positioning columns 2 from falling off the support column 4.

[0034] In this embodiment, the load-bearing capacity testing device for building pile foundations mainly consists of key components such as a support frame 1, support columns 4, and an extension frame 10. It avoids excessive complexity, which not only reduces manufacturing costs but also makes maintenance easier. The four support columns 4 provide a stable support foundation, while the support frame 1, through the sliding arrangement of positioning columns 2 and sliding plates 3 within the first sliding groove 5, ensures stability during load testing. This design helps reduce tilting of the support frame 1 during ascent, improving test accuracy and reducing the occurrence of counterweights falling due to tilting. The extension frame 10 is slidably connected to the support frame 1 through positioning rods 9 and positioning holes 11, expanding the volume of the support frame 1 to accommodate more counterweights. Furthermore, the side walls of the support frame 1 and the extension frame 10 prevent the counterweights from falling. This device has advantages such as simple structure, ease of maintenance, and high safety.

[0035] The working principle of the above embodiments is as follows:

[0036] First, move the device above the pile foundation to be tested, ensuring that the pile foundation can pass through the collar 19 at the bottom of the support 18. Secure the device and prevent shaking or tilting during the test. Activate the electric push rod 13 to adjust the position of the extension frame 10 and the volume of the support frame 1. Place an appropriate amount of counterweight inside the support frame 1 and extension frame 10 according to the test requirements, ensuring that the counterweight is stably placed inside the support frame 1 and extension frame 10 to prevent it from falling during the test. Activate the hydraulic rod 15 to gradually apply downward pressure, transferring the load force to the pile foundation through the pressure plate 17. The pressure detector 16 monitors and records the load force data applied to the pile foundation in real time for subsequent analysis and evaluation of the pile foundation's bearing capacity. During the test, the support frame 1 is lifted upward, causing the positioning column 2 to slide inside the support column 4, releasing the support of the positioning column 2 and support column 4 on the support plate, thus transferring the weight of the counterweight to the pile foundation being tested. After the test, analyze and evaluate the recorded data to determine whether the pile foundation's bearing capacity meets the design requirements.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A load-bearing capacity testing device for building pile foundations, comprising a support frame (1), four support columns (4) and two extension frames (10), characterized in that: The support frame (1) has four positioning columns (2) arranged in a rectangular array fixedly connected to its bottom end. The bottom of the outer wall of each of the four positioning columns (2) has four sliding plates (3) arranged in a ring array fixedly connected to it. The four support columns (4) have four first sliding grooves (5) arranged in a ring array inside them. The support frame (1) has second sliding grooves (8) on both sides. Multiple positioning rods (9) are fixedly connected to one side of each of the two second sliding grooves (8). Multiple positioning holes (11) are opened on one side of each of the two extension frames (10).

2. The load-bearing capacity testing device for building pile foundations according to claim 1, characterized in that: The outer walls of the four support columns (4) are fixedly connected with four reinforcing ribs (6) arranged in a ring array. The bottom ends of the four support columns (4) are fixedly connected with a base plate (7). The ends of the multiple reinforcing ribs (6) away from the support columns (4) are fixedly connected to the base plate (7).

3. The load-bearing capacity testing device for building pile foundations according to claim 1, characterized in that: The support frame (1) has four mounting seats (12) arranged in a rectangular array at its bottom. Each of the four mounting seats (12) has an electric push rod (13) fixedly connected inside. Each of the four electric push rods (13) has a connecting plate (14) fixedly connected to its telescopic end. The upper ends of the four connecting plates (14) are fixedly connected to the extension frame (10) in pairs.

4. The load-bearing capacity testing device for building pile foundations according to claim 1, characterized in that: The support frame (1) is fixedly connected to a hydraulic rod (15) at its bottom end, and a pressure detector (16) is fixedly connected to the bottom end of the hydraulic rod (15), and a pressure plate (17) is fixedly connected to the bottom end of the pressure detector (16).

5. The load-bearing capacity testing device for building pile foundations according to claim 4, characterized in that: The bottom end of the support frame (1) is fixedly connected to two brackets (18) arranged in a mirror image, and a collar (19) is fixedly connected between the two brackets (18).

6. The load-bearing capacity testing device for building pile foundations according to claim 4, characterized in that: The pressure plate (17) is slidably disposed between the two supports (18).

7. The load-bearing capacity testing device for building pile foundations according to claim 1, characterized in that: Both of the extension frames (10) are slidably disposed in the second slide groove (8), and the multiple positioning rods (9) are slidably disposed inside the positioning hole (11).

8. The load-bearing capacity testing device for building pile foundations according to claim 1, characterized in that: The four positioning posts (2) are slidably disposed inside the support post (4), and the multiple sliding plates (3) are slidably disposed inside the first sliding groove (5).

Images