Flat plate load test integrated loading vehicle for surveying bearing characteristics of giant-grained soil

Abstract

The utility model relates to a flat plate load test integrated loading vehicle for surveying the bearing characteristic of giant-grained soil, which belongs to the technical field of foundation surveying and comprises a loading vehicle head, a loading vehicle chassis is fixedly mounted on the surface of the loading vehicle head, and a surveying structure is arranged on the loading vehicle chassis. The surveying structure comprises two sliding rails which are fixedly installed on the surface of a chassis of the loading vehicle. According to the flat plate load test integrated loading vehicle for surveying the bearing characteristic of the huge-grained soil, anchoring operation can be directly carried out on a construction site through the electric anchor drill, a counter-force system does not need to be constructed by depending on an external balance weight or an anchor pile, the construction time of the counter-force system is greatly shortened, and the construction efficiency is improved. The loading vehicle is simple in structure and convenient to use, the situation that in a traditional test, a large amount of time is consumed due to the fact that a proper balance weight or anchor pile position is found is avoided, the loading vehicle is higher in site adaptability, a plate load test can be conducted in a wider construction site, the problem that a traditional test device is limited by the site is solved, and the flexibility and convenience of the test are improved.

Description

Technical Field

[0001] This utility model relates to the field of foundation surveying technology, specifically to an integrated loading vehicle for testing the bearing capacity of coarse-grained soil using a flat plate load test. Background Technology

[0002] During the construction of building projects, composite foundations must undergo load testing to determine whether their bearing capacity meets design requirements. Shallow plate load testing is the most accurate method for testing the bearing capacity of shallow foundations. As an important means of evaluating foundation bearing capacity and deformation characteristics, plate load testing has wide applications in the field of civil engineering.

[0003] Traditional testing devices typically employ hydraulic jacks for loading and manual recording of settlement data, which suffers from the following technical drawbacks: 1) The reaction system relies on external counterweights or anchor piles, which are time-consuming to set up and subject to site limitations; 2) Eccentric loads are easily generated at the contact surface between the load plate and the foundation, leading to deviations in test data; 3) Manual collection of settlement data is infrequent and makes it difficult to capture instantaneous deformation characteristics; 4) The components of the testing equipment are scattered, and repeated disassembly and assembly reduce work efficiency. As a result, existing plate load testing instruments are not flexible and convenient enough for use on construction sites. Therefore, a plate load testing integrated loading vehicle for surveying the bearing characteristics of coarse-grained soil is proposed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an integrated loading vehicle for testing the bearing capacity of coarse soil using a flat plate load test. It has the advantages of high flexibility in use and high accuracy in surveying, and solves the problems of low integration, poor flexibility in use, and insufficient accuracy in surveying of existing surveying devices.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a plate load test integrated loading vehicle for surveying the bearing characteristics of coarse soil, including a loading vehicle head, a loading vehicle chassis fixedly installed on the surface of the loading vehicle head, and a surveying structure provided on the loading vehicle chassis;

[0006] The survey structure includes two sliding rails fixedly installed on the surface of the loading vehicle chassis. A pulley sleeve is slidably fitted onto the surface of each sliding rail. A first hydraulic cylinder is fixedly installed on the surface of the pulley sleeve. A steel plate is fixedly installed on the top of the first hydraulic cylinder. A second hydraulic cylinder is fixedly installed on the lower surface of the steel plate. A load plate is fixedly installed at the bottom of the second hydraulic cylinder. A folding arm is fixedly installed on the surface of the loading vehicle chassis. An electric anchor drill is fixedly installed at one end of the folding arm. Tracked rollers are provided on the surface of the loading vehicle chassis. An adjustment assembly is provided between the loading vehicle chassis and the tracked rollers.

[0007] Furthermore, a data display screen is fixedly installed on the surface of the loader's front end.

[0008] Furthermore, the number of folding arms is four, and the four folding arms are evenly distributed on the surface of the loading vehicle chassis. The number of electric anchor drills is equal to the number of folding arms.

[0009] Furthermore, a hydraulic control gauge is fixedly installed on the surface of the second hydraulic cylinder, and an electromagnetic adsorption block is fixedly installed at the bottom of the second hydraulic cylinder.

[0010] Furthermore, a level controller is fixedly installed on the upper surface of the steel plate, and a laser rangefinder is fixedly installed on the lower surface of the steel plate.

[0011] Furthermore, two rollers are rotatably mounted on the inner side of the pulley sleeve, and the rollers are in contact with the surface of the sliding track.

[0012] Furthermore, the adjustment assembly includes an electric telescopic rod fixedly installed on the lower surface of the loader chassis. Two first connecting frames and two second connecting frames are rotatably installed on the lower surface of the loader chassis. Both the first connecting frames and the second connecting frame are rotatably connected to the track rollers. A fixing rod is fixedly installed on the inner side of the second connecting frame. One end of the electric telescopic rod is rotatably connected to the fixing rod.

[0013] Furthermore, each of the first connecting frame and the second connecting frame is symmetrically distributed on the lower surface of the loading vehicle chassis.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] 1. This integrated loading vehicle for testing the bearing capacity of coarse-grained soil can perform anchoring operations directly on the construction site via an electric anchor drill, eliminating the need to rely on external counterweights or anchor piles to construct the reaction system. This significantly shortens the setup time of the reaction system and avoids the time-consuming process of finding suitable counterweights or anchor piles in traditional tests. This loading vehicle is more adaptable to different sites and can conduct plate load tests in a wider range of construction sites, solving the problem of site limitations for traditional testing devices and improving the flexibility and convenience of the test.

[0016] 2. This integrated loading vehicle for testing the bearing capacity of coarse-grained soil can precisely control the extension and retraction of the second hydraulic cylinder through a hydraulic control dial, thereby accurately adjusting the position and attitude of the load plate. By setting a level controller, the horizontal status of the load plate can be monitored in real time, and fine-tuning can be performed through the hydraulic system to ensure that the contact surface between the load plate and the foundation remains horizontal, effectively avoiding the generation of eccentric loads, greatly improving the accuracy of test data, and reducing the test data deviation problem caused by eccentric loads.

[0017] 3. This integrated loading vehicle for testing the bearing capacity of coarse-grained soil, equipped with a laser rangefinder, can automatically and in real-time measure the settlement data of the load plate without manual operation. Compared with traditional methods of manually recording settlement data, the laser rangefinder can significantly increase the frequency of data acquisition, promptly capture the instantaneous deformation characteristics of the foundation, and display the settlement data collected by the laser rangefinder in real time on a data display screen, facilitating easy viewing and analysis by test personnel, thus solving the problem of low frequency of settlement data collection in traditional manual methods.

[0018] 4. This integrated loader for testing the bearing capacity of coarse-grained soil integrates components such as sliding rails, pulley sleeves, a first hydraulic cylinder, a second hydraulic cylinder, a folding arm, and an electric anchor drill on its chassis, forming a complete surveying equipment system. The components are compactly arranged and work collaboratively, eliminating the need for repeated disassembly and assembly as with traditional testing equipment, greatly improving operational efficiency. Furthermore, the loader chassis is equipped with tracked rollers, which can be easily moved and repositioned via adjustable components, solving the problem of dispersed components and repetitive disassembly and assembly reducing operational efficiency in traditional testing equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the pulley sleeve structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the electric telescopic pole structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the first connecting frame and the second connecting frame of this utility model.

[0023] In the diagram: 1. Loader cab; 2. Loader chassis; 3. Sliding track; 4. Pulley sleeve; 5. First hydraulic cylinder; 6. Steel plate; 7. Second hydraulic cylinder; 8. Loading plate; 9. Folding arm; 10. Electric anchor drill; 11. Tracked roller; 12. Data display screen; 13. Horizontal controller; 14. Hydraulic control gauge; 15. Laser rangefinder; 16. Electric telescopic rod; 17. First connecting frame; 18. Second connecting frame; 19. Fixed rod; 20. Electromagnetic adsorption block; 21. Roller. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1 to 4 This embodiment describes an integrated loading vehicle for testing the bearing capacity of coarse-grained soil using a flat plate load test. It includes a loading vehicle cab 1, a loading vehicle chassis 2 fixedly mounted on the surface of the cab 1, and a testing structure on the chassis 2. The testing structure includes two sliding rails 3 fixedly mounted on the surface of the chassis 2. A pulley sleeve 4 is slidably fitted onto the surface of the sliding rails 3. A first hydraulic cylinder 5 is fixedly mounted on the surface of the pulley sleeve 4. A steel plate 6 is fixedly mounted on the top of the first hydraulic cylinder 5. A second hydraulic cylinder 7 is fixedly mounted on the lower surface of the steel plate 6. A load plate 8 is fixedly mounted on the bottom of the second hydraulic cylinder 7. A folding arm 9 is fixedly mounted on the surface of the chassis 2. An electric anchor drill 10 is fixedly mounted at one end of the folding arm 9. Tracked rollers 11 are provided on the surface of the chassis 2.

[0026] The number of folding arms 9 is four, and the four folding arms 9 are evenly distributed on the surface of the loading vehicle chassis 2. The number of electric anchor drills 10 is equal to the number of folding arms 9.

[0027] It should be noted that a data display screen 12 is fixedly installed on the surface of the loader head 1, a hydraulic control gauge 14 is fixedly installed on the surface of the second hydraulic cylinder 7, an electromagnetic adsorption block 20 is fixedly installed at the bottom of the second hydraulic cylinder 7, a horizontal controller 13 is fixedly installed on the upper surface of the steel plate 6, and a laser rangefinder 15 is fixedly installed on the lower surface of the steel plate 6.

[0028] Among them, two rollers 21 are rotatably installed inside the pulley sleeve 4, and the rollers 21 are in contact with the surface of the sliding track 3.

[0029] An adjustment assembly is provided between the loading vehicle chassis 2 and the tracked rollers 11. The adjustment assembly includes an electric telescopic rod 16 fixedly installed on the lower surface of the loading vehicle chassis 2. Two first connecting frames 17 and two second connecting frames 18 are rotatably installed on the lower surface of the loading vehicle chassis 2. Both the first connecting frames 17 and the second connecting frames 18 are rotatably connected to the tracked rollers 11. A fixing rod 19 is fixedly installed on the inner side of the second connecting frame 18. One end of the electric telescopic rod 16 is rotatably connected to the fixing rod 19. Each first connecting frame 17 and each second connecting frame 18 are symmetrically distributed on the lower surface of the loading vehicle chassis 2.

[0030] It should be noted that the electric anchor drill 10 in this embodiment is a type of anchoring drill, and its working principle is mainly to use the power generated by the electric motor to drive the drill bit to rotate.

[0031] The working principle of the above embodiments is as follows:

[0032] The loader moves via tracked rollers 11 on the surface of the loader chassis 2. When it reaches the designated position, the electric telescopic rod 16 extends and retracts, driving the second connecting frame 18 to rotate via the fixed rod 19. This causes the second connecting frame 18 to extend outward, and the first connecting frame 17 extends outward simultaneously under the influence of the tracked rollers 11. This causes the loader chassis 2 to descend until it contacts the ground. At this point, the electric anchor drill 10 is activated to drill into the ground, fixing the loader chassis 2 and providing reaction force support for the test. The position of the first hydraulic cylinder 5 and the steel plate 6 on the sliding track 3 can be adjusted by moving the pulley sleeve 4, thereby adjusting the load. The load plate 8 is positioned horizontally. Simultaneously, the horizontal controller 13 can monitor the horizontal state of the load plate 8 in real time and make fine adjustments through the hydraulic system to ensure that the contact surface between the load plate 8 and the foundation remains horizontal. The extension and retraction of the second hydraulic cylinder 7 are precisely controlled by the hydraulic control gauge 14, thereby applying a vertically downward pressure to the load plate 8 to simulate the load borne by the foundation. During the loading process, the laser rangefinder 15 measures the settlement data of the load plate 8 in real time and transmits the collected settlement data to the data display screen 12 on the surface of the loading vehicle front 1 in real time. During the test, the electromagnetic adsorption block 20 can be activated as needed to realize the rapid replacement of the load plate 8.

[0033] 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.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flat plate load test integrated loading vehicle for surveying the bearing properties of large-grained soil, comprising a loading vehicle head (1), wherein a loading vehicle platform (2) is fixedly installed on the surface of the loading vehicle head (1), characterized in that: The loading vehicle chassis (2) is equipped with a survey structure; The survey structure includes two sliding rails (3) fixedly installed on the surface of the loading vehicle chassis (2). A pulley sleeve (4) is slidably sleeved on the surface of the sliding rail (3). A first hydraulic cylinder (5) is fixedly installed on the surface of the pulley sleeve (4). A steel plate (6) is fixedly installed on the top of the first hydraulic cylinder (5). A second hydraulic cylinder (7) is fixedly installed on the lower surface of the steel plate (6). A load plate (8) is fixedly installed at the bottom of the second hydraulic cylinder (7). A folding arm (9) is fixedly installed on the surface of the loading vehicle chassis (2). An electric anchor drill (10) is fixedly installed at one end of the folding arm (9). Tracked rollers (11) are provided on the surface of the loading vehicle chassis (2). An adjustment component is provided between the loading vehicle chassis (2) and the tracked rollers (11).

2. The self-loading truck for plate loading test of investigating the bearing property of the massive soil according to claim 1, characterized in that: A data display screen (12) is fixedly installed on the surface of the truck head (1).

3. The self-loading truck for plate loading test of investigating the bearing property of the massive soil according to claim 1, characterized in that: The number of folding arms (9) is four, and the four folding arms (9) are evenly distributed on the surface of the loading vehicle chassis (2). The number of electric anchor drills (10) is equal to the number of folding arms (9).

4. The self-loading truck for plate loading test of investigating the bearing property of the massive soil according to claim 1, characterized in that: A hydraulic control gauge (14) is fixedly installed on the surface of the second hydraulic cylinder (7), and an electromagnetic adsorption block (20) is fixedly installed at the bottom of the second hydraulic cylinder (7).

5. The self-loading truck for plate loading test to investigate the bearing properties of a soil according to claim 1, characterized in that: A horizontal controller (13) is fixedly installed on the upper surface of the steel plate (6), and a laser rangefinder (15) is fixedly installed on the lower surface of the steel plate (6).

6. The self-contained plate load test truck for investigating the bearing properties of a soil mass according to claim 1, characterized in that: Two rollers (21) are rotatably mounted on the inner side of the pulley sleeve (4), and the rollers (21) are in contact with the surface of the sliding track (3).

7. The self-contained plate load test truck for investigating the bearing properties of a soil mass according to claim 1, characterized in that: The adjustment assembly includes an electric telescopic rod (16) fixedly installed on the lower surface of the loading vehicle chassis (2). Two first connecting frames (17) and two second connecting frames (18) are rotatably installed on the lower surface of the loading vehicle chassis (2). The first connecting frame (17) and the second connecting frame (18) are rotatably connected to the tracked rollers (11). A fixing rod (19) is fixedly installed on the inner side of the second connecting frame (18). One end of the electric telescopic rod (16) is rotatably connected to the fixing rod (19).

8. The self-contained plate load test truck for investigating the bearing properties of a soil mass according to claim 7, characterized in that: Each of the first connecting frame (17) and the second connecting frame (18) is symmetrically distributed on the lower surface of the loading vehicle chassis (2).

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