A movable loading device for multi-pile loading experiments

Abstract

This utility model relates to the field of pile foundation engineering, specifically disclosing a movable loading device for multi-pile loading experiments, including a lifting device, a slide rail, a servo electric cylinder, a displacement gauge, and a model box. The lifting device enables the servo electric cylinder to move vertically, while the slide rail enables its lateral movement, facilitating loading of piles at different locations. The servo electric cylinder applies load to the piles, simulating actual working conditions, and the displacement gauge measures the pile side displacement. The model box accommodates the multi-pile experiment. This utility model can conveniently and efficiently apply loads to multiple piles, thereby obtaining richer and more comprehensive experimental data. It can load multiple piles at different locations under the same experimental conditions, thereby comparing and analyzing the bearing characteristics of each pile.

Description

Technical Field

[0001] This utility model relates to the field of pile foundation engineering technology, specifically a movable loading device for multi-pile loading experiments. Background Technology

[0002] The type, length, and diameter of piles can be flexibly selected and adjusted according to engineering needs and geological conditions, allowing for convenient selection during use. Piles can penetrate deep into underground strata, transferring the load of the superstructure to deep, hard soil or rock layers, thereby achieving high bearing capacity. Loading piles can determine their bearing capacity, assess their deformation characteristics, study the interaction between the pile and soil, verify design parameters and construction quality, and evaluate the long-term performance of pile foundations. However, in experimental simulations of piles, loading at different locations may yield significantly different results. Conducting experiments at these different locations separately would not only increase the complexity and cost of the experiment but also waste a considerable amount of time.

[0003] In the future, pile foundation engineering will develop towards intelligentization, automation, the application of new materials, environmental protection and sustainable development, multidisciplinary integration, and the promotion of new construction techniques. These trends will not only improve the construction efficiency and quality of pile foundation engineering but also promote the sustainable development of the construction industry. Therefore, pile simulation experiments are a key part of geotechnical engineering research, offering significant advantages in many aspects. Testing multiple piles in a model box not only simulates multi-directional loading paths and comprehensively studies the mechanical behavior of piles under different loading directions but also effectively reduces the input of human and material resources and significantly shortens the experimental time. Therefore, multi-pile loading experiments are particularly important in pile foundation research and also provide a simpler and more efficient method for pile performance determination. Summary of the Invention

[0004] This invention addresses the aforementioned problems in the prior art by providing a movable loading device for multi-pile loading experiments. This device enables the loading of multiple piles under the same experimental conditions, significantly improving experimental efficiency and saving resources.

[0005] To achieve the above objectives, this utility model proposes a movable loading device for multi-pile loading experiments, comprising: a lifting device, a slide rail, a servo cylinder, a displacement sensor, a model box, bolt holes and bolts. The lifting device and the slide rail cooperate to move the servo cylinder laterally and vertically, and to perform loading experiments on multiple piles in the model box.

[0006] Preferably, the lifting device includes a column, a slider, a fixing hole, a handle, a fixing component, a lifting platform, a triangular support plate, and a base; the slider slides on the column; the fixing component is located on the slider and is fixed by connecting to the fixing hole; the handle is connected to the slider and controls the fixing component to connect to the fixing hole to fix the position of the lifting device.

[0007] Preferably, the lifting platform is used to place the servo electric cylinder and is supported by a triangular support plate. The lifting platform moves vertically on the column along with the slider.

[0008] Preferably, the slide rail includes a track, a sliding platform, a bearing, and a rolling element. The sliding platform is connected to the bearing; the bearing is connected to the rolling element; and the sliding platform slides within the track of the slide rail via the bearing and the rolling element, thereby driving the servo electric cylinder to move laterally.

[0009] Preferably, the slide rail is placed on the side edge of the model box, the internal structure of the slide rail has a "T" shaped cross-section, and the length of the slide rail is the same as the length of the model box.

[0010] Preferably, the track of the sliding platform adopts a "T" shape design, and its length is equal to the distance between the two slide rails on the model box, and the track of the sliding platform matches the slide rail track.

[0011] Preferably, the servo electric cylinder is connected to the pile via a locking device.

[0012] Preferably, a displacement sensor is installed inside the model box, and the displacement sensor is located on the side of the pile.

[0013] Preferably, the model box is designed to accommodate multiple piles.

[0014] Therefore, this utility model proposes a movable loading device for multi-pile loading experiments, which has the following advantages:

[0015] This invention achieves the mobility of the servo electric cylinder through a sliding rail and lifting device, allowing for the loading of piles at different locations within the same model box without frequent disassembly, significantly improving experimental efficiency. Its high efficiency is reflected in its ability to quickly complete multi-pile loading experiments, saving time and costs. Its comprehensiveness lies in its ability to acquire stress and displacement data of piles at different heights and locations, providing rich data for pile foundation research. Simultaneously, this device saves manpower and material resources, reduces experimental costs, and improves the reliability of experimental data, making it of significant value for the research and practical application of pile foundation engineering.

[0016] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a movable loading device for multi-pile loading experiments according to this utility model;

[0018] Figure 2 This is a schematic diagram of the reverse side of a lifting device that enables a servo electric cylinder to move up and down in a movable loading device for multi-pile loading experiments according to this utility model.

[0019] Figure 3 This is a front view of the lifting device that enables the servo electric cylinder to move up and down in a movable loading device for multi-pile loading experiments according to this utility model.

[0020] Figure 4 This is a schematic diagram of the slide rail structure of a movable loading device for multi-pile loading experiments according to this utility model;

[0021] Figure 5 yes Figure 3 A schematic diagram of the cross-sectional structure inside the middle slide rail;

[0022] Figure 6 yes Figure 2 Schematic diagram of the structure of the lifting platform;

[0023] Figure 7 This is a schematic diagram of the servo electric cylinder structure of a movable loading device for multi-pile loading experiments according to this utility model;

[0024] Figure 8 This is a schematic diagram of the pile connection of a movable loading device for multi-pile loading experiments according to this utility model;

[0025] Figure 9 This is a schematic diagram of the structure of a sliding platform of a movable loading device for multi-pile loading experiments according to this utility model;

[0026] Figure 10 This is a structural schematic diagram of the base of a lifting device for a movable loading device used in multi-pile loading experiments according to this utility model.

[0027] Figure Labels

[0028] 1. Lifting device; 101. Column; 102. Slider; 103. Fixing hole; 104. Handle; 105. Fixing component; 106. Lifting platform; 107. Triangular support plate; 108. Base; 2. Slide rail; 201. Track; 202. Sliding platform; 203. Bearing; 204. Rolling element; 3. Locking device; 4. Servo electric cylinder; 5. Displacement sensor; 6. Model box; 7. Bolt hole; 8. Bolt. Detailed Implementation

[0029] To make the technical solution, advantages, and objectives of this utility model clearer, the technical solution of the embodiments of this utility model will be clearly and completely described below. The described embodiments are some, but not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this application.

[0030] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0031] like Figure 1 As shown, a movable loading device for multi-pile loading experiments provided according to an embodiment of the present invention includes a lifting device 1 that enables a servo cylinder to move up and down, a slide rail 2 that enables the servo cylinder to move laterally, a locking device 3 that connects the pile to the servo cylinder, a servo cylinder 4, and a displacement sensor 5 for measuring pile displacement changes.

[0032] like Figures 2-3 As shown, the lifting device 1 consists of a column 101, a slider 102, a fixing hole 103, a handle 104, a fixing component 105, a lifting platform 106, a triangular support plate 107, and a base 108.

[0033] The slider 102 is placed on the column 101 and slides. The slider 102 moves up and down with the help of the handle 104, thereby making the fixing part 105 engage and fix with the fixing hole 103 on the column 101, thus driving the slider 102 to slide up and down along the column 101.

[0034] The lifting platform 106 is used to place the servo electric cylinder; the triangular support plate 107 is used to support the weight of the servo electric cylinder; and the base 108 contacts the slide rail 2 and moves along it.

[0035] The lifting device 1 has the function of lifting the servo cylinder 4 vertically so as to measure the lateral displacement of the pile at different heights.

[0036] like Figures 4-5 As shown, the slide rail 2 includes a track 201, a sliding platform 202, a bearing 203, and a rolling element 204. The track 201 in the slide rail 2 allows the servo electric cylinder to move. The slide rail 2 is arranged at the edge of the model box, and its track cross-section presents a "T" shape structure, and its length is equal to the length of the model box.

[0037] The track on the sliding platform 202 also adopts a "T" shape design, and its length is equal to the distance between the two slide rails on the model box, so as to ensure that the sliding platform 202 can move parallel and stably on the slide rail 2.

[0038] The sliding platform 202 is connected to the bearing 203; the bearing 203 is connected to the rolling element 204, and the rolling element 204 rolls through the bearing 203, thereby driving the sliding platform 202 to move.

[0039] The sliding platform 202 slides within the track 201 of the slide rail 2 via the bearing 203 and the rolling element 204, thereby driving the servo electric cylinder 4 to move laterally.

[0040] like Figures 6-7 As shown, the connection between the servo cylinder 4 and the lifting device 1 is achieved by first ensuring that the bolt holes on the servo cylinder 4 and the bolt holes 7 on the lifting device 1 are precisely aligned. After confirming that the bolt holes 7 are aligned, a bolt of appropriate size is passed through the aligned bolt holes 7 and the nut is tightened to achieve a secure connection between the servo cylinder 4 and the lifting device 1.

[0041] like Figure 8 As shown, the connection between the servo electric cylinder and the pile is achieved through clamp 301. This connection method ensures a tight fit between the servo electric cylinder and the pile, and provides the necessary stability and safety.

[0042] Regarding the connection between the base 108 and the sliding platform 202 in the lifting device 1: First, ensure that the base 108 and the sliding platform 202 are correctly aligned for precise bolt connection. The base 108 has four evenly distributed bolts, and the sliding platform 202 also has four corresponding holes. After alignment, they are fixed with nuts.

[0043] Displacement sensor 5 is positioned between the servo cylinder and the pile to measure the pile's displacement. The displacement gauge measures the horizontal displacement of the pile after it is subjected to force, which is crucial for assessing the stability and bearing capacity of the pile foundation.

[0044] Furthermore, the model box design of this invention can accommodate 8 piles, arranged in a row of 2 piles, for a total of 4 rows. After measuring any two piles, the servo cylinder is moved to the designated position using a lifting device, and then the pile driving operation is carried out.

[0045] In summary, this experimental setup uses a lifting device to achieve vertical movement of the servo electric cylinder, in order to measure experimental data at different height positions.

[0046] The installation steps of the movable loading device for multi-pile loading experiments according to this utility model are as follows:

[0047] (1) Install and fix the slide rail in the predetermined position of the model box;

[0048] (2) Secure the lifting device to the slide rail;

[0049] (3) The servo electric cylinder and the lifting device are connected by riveting to achieve a stable fixation;

[0050] (4) Move the lifting device vertically to the predetermined position;

[0051] (5) Connect the servo electric cylinder to the pile using clamps. Installation is successful.

[0052] The working principle of the movable loading device for multi-pile loading experiments of this utility model is as follows:

[0053] A servo electric cylinder is used to apply load to the pile to simulate the stress under actual working conditions. By adjusting the lifting device, the load is applied to different height positions of the pile, thereby testing the stress on the pile side at different heights. The servo electric cylinder is moved to measure the displacement of other piles. After the servo electric cylinder is moved to the predetermined position, the pile is driven. Loads are applied to multiple piles to obtain experimental data.

[0054] Therefore, this invention provides a movable loading device for multi-pile loading experiments. Through its movable design, it enables the loading of multiple piles under the same experimental conditions, significantly improving experimental efficiency and saving resources. Its efficient and comprehensive data acquisition capabilities provide a reliable basis for pile foundation engineering research and are of great value for the design, construction, and long-term performance evaluation of pile foundation projects.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A movable loading device for multi-pile loading experiments, characterized in that, include: The system includes a lifting device, a slide rail, a servo cylinder, a displacement sensor, a model box, bolt holes, and bolts. The lifting device and slide rail work together to move the servo cylinder laterally and vertically, and to perform loading experiments on multiple piles inside the model box.

2. The movable loading device for multi-pile loading experiments according to claim 1, characterized in that, The lifting device includes a column, a slider, a fixing hole, a handle, a fixing component, a lifting platform, a triangular support plate, and a base; the slider slides on the column; the fixing component is located on the slider and is fixed by connecting to the fixing hole; the handle is connected to the slider and controls the fixing component to connect to the fixing hole to fix the position of the lifting device.

3. The movable loading device for multi-pile loading experiments according to claim 2, characterized in that, The lifting platform is used to place the servo electric cylinder and is supported by a triangular support plate. The lifting platform moves vertically on the column along with the slider.

4. A movable loading device for multi-pile loading experiments according to claim 1, characterized in that, The slide rail includes a track, a sliding platform, a bearing, and a rolling element. The sliding platform is connected to the bearing; the bearing is connected to the rolling element. The sliding platform slides within the track of the slide rail via the bearing and the rolling element, driving the servo electric cylinder to move laterally.

5. A movable loading device for multi-pile loading experiments according to claim 4, characterized in that, The slide rail is installed on the side edge of the model box. The internal structure of the slide rail has a "T" shaped cross-section, and the length of the slide rail is the same as the length of the model box.

6. A movable loading device for multi-pile loading experiments according to claim 4, characterized in that, The sliding platform's track adopts a "T" shape design, and its length is equal to the distance between the two slide rails on the model box. The sliding platform's track matches the slide rail track.

7. A movable loading device for multi-pile loading experiments according to claim 1, characterized in that, The servo electric cylinder is connected to the pile via a locking device.

8. A movable loading device for multi-pile loading experiments according to claim 1, characterized in that, A displacement sensor is installed inside the model box, and the displacement sensor is located on the side of the pile.

9. A movable loading device for multi-pile loading experiments according to claim 1, characterized in that, The model box is designed to accommodate multiple piles.

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