Loading device enabling force and force arm to be dynamically perpendicular and using method

Abstract

The invention belongs to the technical field of structural stability evaluation, and particularly relates to a force and force arm dynamic perpendicularity loading device and a use method. The height adjusting mechanism is fixedly arranged at the bottom end in the supporting frame; the first load loading mechanism is movably arranged in the height adjusting mechanism, and the first load loading mechanism is used for applying a first load to the side wall of the pile foundation; the second load loading mechanism is fixedly arranged at the top end of the supporting frame, and the second load loading mechanism is used for applying a second load to the top end of the pile foundation; and the pile fixing mechanism is fixedly arranged at the bottom end in the supporting frame, the central axis of the pile fixing mechanism coincides with the central axis of the height adjusting mechanism, and the pile fixing mechanism is used for installing and fixing the pile foundation and adjusting the inclination angle of the pile foundation. According to the invention, the application precision of the loading force can be improved, the force is always vertical to the force arm, and the actual stress state of the pile foundation in a complex marine environment can be better simulated.

Description

Technical Field

[0001] The present invention belongs to the technical field of structural stability evaluation, and particularly relates to a loading device with dynamically perpendicular force and force arm and a using method thereof. Background Art

[0002] Typical ocean engineering projects such as offshore wind power, offshore platforms, cross-sea bridges, and high-piled wharves are important fields for national energy development. The pile foundation is an important supporting structure for ocean engineering, and its stability directly affects the safety and long-term operation of ocean engineering, and is of great significance for the development of new marine energy. However, the pile foundation bears various loads in the complex marine environment, including long-term loads such as waves, tides, wind, and ocean currents. These loads pose extremely high requirements for the design and safety assessment of the pile foundation.

[0003] The marine environmental loads can cause cumulative deformation and strength attenuation of the soil around the pile foundation, and even lead to structural failure. In order to study the mechanical properties of the pile foundation under complex marine environmental loads more deeply, model test research has become an important means of engineering design. Among them, the supergravity field test has become one of the important technologies for pile foundation physical tests because it can truly reproduce the prototype working conditions of the pile foundation, especially by introducing a real stress field in the scaled-down model.

[0004] In the existing test research, the marine environmental loads are usually applied by means of force loading. However, in the supergravity field, due to the amplification effect of the gravitational acceleration, the directionality of the loading force has a significant impact on the test results. Especially in the test device, the angle between the loading force and the loading force arm will shift as the model pile foundation deforms or the loading mechanism moves. This shift not only affects the actual application effect of the cyclic load, but also may cause the generation of additional moments, thereby reducing the accuracy and reliability of the test results. At present, most of the commonly used loading devices ignore the dynamic adjustment of the loading force direction and are difficult to ensure that the force is always perpendicular to the force arm, thus limiting the application range and simulation accuracy of the test device.

[0005] Therefore, it is necessary to design a loading device with dynamically perpendicular force and force arm and a using method thereof to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a loading device with dynamically perpendicular force and force arm and a using method thereof, which can not only improve the application accuracy of the loading force, ensure that the force is always perpendicular to the force arm, but also better simulate the actual stress state of the pile foundation under complex marine environments.

[0007] To achieve the above purpose, the present invention provides the following solution: A loading device with dynamically perpendicular force and force arm, comprising

[0008] A support frame;

[0009] The height adjustment mechanism is fixedly arranged at the inner bottom end of the support frame;

[0010] The first load applying mechanism is movably arranged inside the height adjustment mechanism, and the first load applying mechanism is used to apply a first load to the side wall of the pile foundation;

[0011] The second load applying mechanism is fixedly arranged at the top end of the support frame, and the second load applying mechanism is used to apply a second load to the top end of the pile foundation;

[0012] The pile fixing mechanism is fixedly arranged at the inner bottom end of the support frame, the central axis of the pile fixing mechanism coincides with the central axis of the height adjustment mechanism, and the pile fixing mechanism is used to install and fix the pile foundation and adjust the inclination angle of the pile foundation.

[0013] For a loading device with dynamically perpendicular force and force arm based on the present invention, the height adjustment mechanism includes a first motor, the first motor is fixedly arranged at a corner of the bottom end of the support frame, the output shaft of the first motor is fixedly connected to the bottom end of a vertically arranged first lead screw, the top end of the first lead screw is rotatably connected to a first lead screw seat, the first lead screw seat is fixedly connected to the side wall of the support frame, the bottom ends of vertically arranged first optical rods are respectively fixedly connected to the other three corners of the support frame, the top ends of the first optical rods are fixedly connected to first optical rod seats, the first optical rod seats are fixedly connected to the side wall of the support frame, a lifting frame is movably connected to the first lead screw and the three first optical rods, a gear ring is rotatably arranged on the inner side wall of the lifting frame, the gear ring meshes with an internal gear, the internal gear is rotatably arranged inside the lifting frame, the internal gear is fixedly arranged on the output shaft of a driving motor, the driving motor is fixedly arranged on the lifting frame, and the first load applying mechanism is fixedly arranged on the gear ring.

[0014] For a loading device with dynamically perpendicular force and force arm based on the present invention, the first load applying mechanism includes a first adjusting part, the first adjusting part is rotatably arranged on the gear ring, the fixed end of a first telescopic rod is rotatably connected to the first adjusting part, and the telescopic end of the first telescopic rod is fixedly connected to a first top ball, and the first top ball is close to the pile foundation.

[0015] A loading device with dynamically perpendicular force and force arm based on the present invention. The first adjusting part includes a connecting shaft. One end of the connecting shaft is rotatably connected to the gear ring. The other end of the connecting shaft is fixedly connected with a first connecting seat. A second driven gear is fixedly sleeved on the outer side of the connecting shaft. A second motor is fixedly connected to the gear ring. The output shaft of the second motor is fixedly connected with a second driving gear. The second driving gear is in transmission engagement with the second driven gear. A first rotating shaft is fixedly connected inside the first connecting seat. The fixed end of the first telescopic rod is rotatably connected to the first rotating shaft. A first swinging part is arranged on the first connecting seat. The first swinging part is in transmission connection with the first telescopic rod.

[0016] A loading device with dynamically perpendicular force and force arm based on the present invention. The first swinging part includes a third motor. The third motor is fixedly connected to the first connecting seat. The output shaft of the third motor is coaxial with the first rotating shaft. One end of a third connecting rod is fixedly connected to the output shaft of the third motor. The other end of the third connecting rod is rotatably connected to a first swinging shaft. The first swinging shaft is movably arranged in a first arc-shaped hole formed in the first connecting seat. The first swinging shaft is fixedly connected to the fixed end of the first telescopic rod.

[0017] A loading device with dynamically perpendicular force and force arm based on the present invention. The pile fixing mechanism includes a fixed seat. The bottom end of the fixed seat is fixedly connected to the bottom end of the support frame. The top end of the fixed seat is fixedly connected with a connecting seat. The top end of the connecting seat is fixedly connected with a spherical groove. An articulated ball is rotatably connected inside the spherical groove. The articulated ball is fixedly connected with a pile fixing part.

[0018] A loading device with dynamically perpendicular force and force arm based on the present invention. The pile fixing part includes a pile seat. The bottom end of the pile seat is fixedly connected to the articulated ball. A seat groove is formed at the top end of the pile seat. The pile foundation is detachably installed in the seat groove. A plurality of adjusting rods are threadedly connected to the side wall of the seat groove. The plurality of adjusting rods are arranged at equal intervals along the circumferential and axial directions of the seat groove. A limiting ball is fixedly connected to one end of the adjusting rod located inside the seat groove. A handle is fixedly connected to the other end of the adjusting rod.

[0019] A loading device with dynamically perpendicular force and force arm based on the present invention. The second load loading mechanism includes a horizontal position adjusting part. The horizontal position adjusting part is fixedly arranged at the top end of the support frame. The bottom end of the horizontal position adjusting part is rotatably connected to a second adjusting part. The bottom end of the second adjusting part is fixedly connected with a second connecting seat. The fixed end of a second telescopic rod is rotatably connected to the second connecting seat. The telescopic end of the second telescopic rod is fixedly connected with a second top ball. A second swinging part is fixedly connected to the second connecting seat. The second swinging part is in transmission connection with the fixed end of the second telescopic rod.

[0020] A loading device with dynamically perpendicular force and force arm according to the present invention, wherein the second adjusting part includes a sixth rotating shaft. The top end of the sixth rotating shaft is rotatably connected to the bottom end of the horizontal position adjusting part. The second connecting seat is fixedly connected to the bottom end of the sixth rotating shaft. A sixth motor is fixedly connected to the bottom end of the horizontal position adjusting part. The output shaft of the sixth motor is fixedly connected with a sixth driving gear, and the sixth driving gear is in transmission connection with the sixth rotating shaft.

[0021] A method for using a loading device with dynamically perpendicular force and force arm includes the following steps:

[0022] Fix the pile foundation on the top end of the pile fixing mechanism, and adjust the inclination angle of the pile fixing mechanism according to the direction of the load to be applied.

[0023] Adjust the position of the height adjusting mechanism, and apply a horizontal load or a first inclined load to the side wall of the pile foundation through the first load loading mechanism.

[0024] Adjust the position of the second load loading mechanism, and apply a vertical load or a second inclined load to the top end of the pile foundation.

[0025] Compared with the prior art, the present invention has the following advantages and technical effects:

[0026] The present invention can fix pile foundations of different sizes through the provided pile fixing mechanism and adjust the pile foundation to a certain inclination angle. The provided height adjusting mechanism can adjust the height of the first load loading mechanism, enabling the first load loading mechanism to apply a horizontal load or a load with a certain inclination angle to different positions on the side wall of the pile foundation. The provided second load loading mechanism can apply a vertical load and a load with a certain inclination angle to the top end of the pile foundation. The height adjusting mechanism of the present invention is also arranged in a surrounding manner to ensure that the force can be dynamically applied from any direction during the loading process, greatly improving the flexibility of the loading. The second load loading mechanism is also designed with a rotary loading function, which is not only applicable to conventional working conditions such as pile foundation loading and combined loads, but also can be extended to complex scenarios such as one-way, two-way, and multi-directional cyclic loading, further broadening the application range and functionality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings:

[0028] Figure 1 It is a schematic diagram of the whole of the present invention;

[0029] Figure 2 Schematic diagram of the height adjustment mechanism of the present invention;

[0030] Figure 3 is Figure 2 Partial enlarged view of A in

[0031] Figure 4 Schematic diagram of the pile fixing mechanism of the present invention;

[0032] Figure 5 Schematic diagram of the pile seat of the present invention;

[0033] Figure 6 Schematic diagram of the second load loading mechanism of the present invention;

[0034] Figure 7 is Figure 6 Partial enlarged view of B in

[0035] Among them, 1, bottom plate; 2, side plate; 3, top frame; 4, first motor; 5, first lead screw; 6, first lead screw seat; 7, first optical rod; 8, first optical rod seat; 9, lifting frame; 10, gear ring; 11, first top ball; 12, second motor; 13, second driving gear; 14, first connecting seat; 15, connecting shaft; 16, second driven gear; 17, third motor; 18, third connecting rod; 19, first swing shaft; 20, first arc-shaped hole; 21, first telescopic rod; 22, first rotating shaft; 23, fixed seat; 24, connecting seat; 25, spherical groove; 26, articulated ball; 27, pile seat; 28, seat groove; 29, adjusting rod; 30, handle; 31, limiting ball; 32, fourth motor; 33, fourth lead screw; 34, fourth optical rod; 35, fourth sliding plate; 36, fifth motor; 37, fifth lead screw; 38, fifth lead screw seat; 39, fifth optical rod; 40, fifth optical rod seat; 41, second telescopic rod; 42, second top ball; 43, pile foundation; 44, sixth motor; 45, sixth driving gear; 46, sliding seat; 47, sixth rotating shaft; 48, second connecting seat; 49, seventh motor; 50, second connecting rod; 51, second swing shaft; 52, second arc-shaped groove; 53, second rotating shaft. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0038] Referring to Figures 1 to 7 as shown, the present invention provides a loading device with dynamically perpendicular force and force arm, including

[0039] a support frame;

[0040] a height adjustment mechanism, fixedly arranged at the inner bottom end of the support frame;

[0041] a first load loading mechanism, movably arranged inside the height adjustment mechanism, and the first load loading mechanism is used to apply a first load to the side wall of the pile foundation 43;

[0042] a second load loading mechanism, fixedly arranged at the top end of the support frame, and the second load loading mechanism is used to apply a second load to the top end of the pile foundation 43;

[0043] a pile fixing mechanism, fixedly arranged at the inner bottom end of the support frame, the central axis of the pile fixing mechanism coincides with the central axis of the height adjustment mechanism, and the pile fixing mechanism is used to install and fix the pile foundation 43 and adjust the inclination angle of the pile foundation 43.

[0044] Further, the height adjustment mechanism includes a first motor 4, the first motor 4 is fixedly arranged at a corner of the bottom end of the support frame, the output shaft of the first motor 4 is fixedly connected to the bottom end of a vertically arranged first lead screw 5, the top end of the first lead screw 5 is rotatably connected to a first lead screw seat 6, the first lead screw seat 6 is fixedly connected to the side wall of the support frame, the other three corners of the support frame are respectively fixedly connected to the bottom ends of vertically arranged first optical rods 7, the top ends of the first optical rods 7 are fixedly connected to a first optical rod seat 8, the first optical rod seat 8 is fixedly connected to the side wall of the support frame, a lifting frame 9 is movably connected to the first lead screw 5 and the three first optical rods 7, a gear ring 10 is rotatably arranged on the inner side wall of the lifting frame 9, the gear ring 10 meshes with an internal gear, the internal gear is rotatably arranged inside the lifting frame 9, the internal gear is fixedly arranged on the output shaft of a driving motor, the driving motor is fixedly arranged on the lifting frame 9, and the first load loading mechanism is fixedly arranged on the gear ring 10.

[0045] Further, the first load loading mechanism includes a first adjustment part, the first adjustment part is rotatably arranged on the gear ring 10, the first adjustment part is rotatably connected to the fixed end of a first telescopic rod 21, and the telescopic end of the first telescopic rod 21 is fixedly connected to a first top ball 11, and the first top ball 11 is close to the pile foundation 43.

[0046] Further, the first adjusting part includes a connecting shaft 15. One end of the connecting shaft 15 is rotatably connected to the gear ring 10, and the other end of the connecting shaft 15 is fixedly connected with a first connecting seat 14. A second driven gear 16 is fixedly sleeved on the outer side of the connecting shaft 15. A second motor 12 is fixedly connected to the gear ring 10, and the output shaft of the second motor 12 is fixedly connected with a second driving gear 13. The second driving gear 13 is in transmission engagement with the second driven gear 16. A first rotating shaft 22 is fixedly connected inside the first connecting seat 14. The fixed end of the first telescopic rod 21 is rotatably connected to the first rotating shaft 22. A first swinging part is arranged on the first connecting seat 14, and the first swinging part is in transmission connection with the first telescopic rod 21.

[0047] Further, the first swinging part includes a third motor 17. The third motor 17 is fixedly connected to the first connecting seat 14. The output shaft of the third motor 17 is coaxial with the first rotating shaft 22. One end of a third connecting rod 18 is fixedly connected to the output shaft of the third motor 17, and the other end of the third connecting rod 18 is rotatably connected to a first swinging shaft 19. The first swinging shaft 19 is movably arranged in a first arc-shaped hole 20 formed in the first connecting seat 14. The first swinging shaft 19 is fixedly connected to the fixed end of the first telescopic rod 21.

[0048] When the pile foundation 43 is in a vertical position, by adjusting the different heights of the lifting frame 9 through the first motor 4 and simultaneously adjusting the rotation angle of the gear ring 10 through the driving motor, the first top ball 11 can apply forces to different heights and different circumferential positions on the side wall of the pile foundation 43. When the pile foundation 43 is in an inclined position, after adjusting the different heights of the lifting frame 9 through the first motor 4 and simultaneously adjusting the rotation angle of the gear ring 10 through the driving motor, then by adjusting the different inclination angles of the first telescopic rod 21 through the third motor 17, the first telescopic rod 21 is in a position perpendicular to the inclined pile foundation 43, and an inclined angle force is applied to the side wall of the inclined pile foundation 43.

[0049] Further, the pile fixing mechanism includes a fixed seat 23. The bottom end of the fixed seat 23 is fixedly connected to the bottom end of the support frame. The top end of the fixed seat 23 is fixedly connected with a connecting seat 24. The top end of the connecting seat 24 is fixedly connected with a spherical groove 25. An articulated ball 26 is rotatably connected inside the spherical groove 25. The articulated ball 26 is fixedly connected with a pile fixing part.

[0050] Further, the pile fixing part includes a pile seat 27. The bottom end of the pile seat 27 is fixedly connected to the articulated ball 26. A seat groove 28 is formed at the top end of the pile seat 27. The pile foundation 43 is detachably installed in the seat groove 28. A plurality of adjusting rods 29 are threadedly connected to the side wall of the seat groove 28. The plurality of adjusting rods 29 are arranged at equal intervals along the circumferential and axial directions of the seat groove 28. One end of the adjusting rod 29 located inside the seat groove 28 is fixedly connected with a limiting ball 31, and the other end of the adjusting rod 29 is fixedly connected with a handle 30.

[0051] Further, the second load loading mechanism includes a horizontal position adjusting part, which is fixedly arranged at the top end of the support frame. The bottom end of the horizontal position adjusting part is rotatably connected with a second adjusting part. The bottom end of the second adjusting part is fixedly connected with a second connecting seat 48. The second connecting seat 48 is rotatably connected with the fixed end of a second telescopic rod 41. The telescopic end of the second telescopic rod 41 is fixedly connected with a second top ball 42. A second swinging part is fixedly connected to the second connecting seat 48, and the second swinging part is in transmission connection with the fixed end of the second telescopic rod 41.

[0052] As an additional embodiment of the present invention, the support frame includes a bottom plate 1. The top parts of two opposite side edges of the bottom plate 1 are respectively fixedly connected with side plates 2. Both side plates 2 are vertically arranged, and the top ends of the two side plates 2 are jointly fixedly connected with a top frame 3.

[0053] As an additional embodiment of the present invention, the horizontal position adjusting part includes a fourth motor 32, which is fixedly connected with the inner side wall of the top frame 3. One end of an output shaft of the fourth motor 32 is fixedly connected with one end of a fourth lead screw 33. The other end of the fourth lead screw 33 is rotatably connected with the inner side wall of the top frame 3. A fourth optical rod 34 is also fixedly connected with the inner side wall of the top frame 3. The fourth optical rod 34 is parallel and spaced from the fourth lead screw 33. One end of a fourth slide plate 35 is threadedly connected with the fourth lead screw 33, and the other end of the fourth slide plate 35 is slidably connected with the fourth optical rod 34. The fourth slide plate 35 is slidably arranged in the top frame 3. One end of the bottom of the fourth slide plate 35 is fixedly connected with a fifth motor 36. One end of a fifth lead screw 37 is fixedly connected with the fifth motor 36. The other end of the fifth lead screw 37 is rotatably connected with one end of a fifth lead screw seat 38. The fifth lead screw seat 38 is fixedly connected with the other end of the bottom of the fourth slide plate 35. The bottom of the fourth slide plate 35 is also fixedly connected with a fifth optical rod 39 through two fifth optical rod seats 40. The fifth optical rod 39 is parallel and spaced from the fifth lead screw 37. One end of a slide seat 46 is threadedly connected with the fifth lead screw 37, and the other end of the slide seat 46 is slidably connected with the fifth optical rod 39. The top end of the slide seat 46 is in sliding contact with the bottom end of the fourth slide plate 35.

[0054] Further, the second adjusting part includes a sixth rotating shaft 47. The top end of the sixth rotating shaft 47 is rotatably connected with the bottom end of the horizontal position adjusting part. The second connecting seat 48 is fixedly connected with the bottom end of the sixth rotating shaft 47. A sixth motor 44 is fixedly connected with the bottom end of the horizontal position adjusting part. An output shaft of the sixth motor 44 is fixedly connected with a sixth driving gear 45, and the sixth driving gear 45 is in transmission connection with the sixth rotating shaft 47.

[0055] As an additional embodiment of the present invention, the second swinging part includes a seventh motor 49, the seventh motor 49 is fixedly connected to the second connecting seat 48, one end of the output shaft of the seventh motor 49 is fixedly connected to one end of a second connecting rod 50, the other end of the second connecting rod 50 is rotatably connected to a second swinging shaft 51, the second swinging shaft 51 is movably arranged in a second arc-shaped groove 52 formed in the second connecting seat 48, the second swinging shaft 51 is fixedly connected to the fixed end of the second telescopic rod 41, a second rotating shaft 53 is fixedly connected in the second connecting seat 48, the central axis of the second rotating shaft 53 coincides with the central axis of the output shaft of the seventh motor 49, and the fixed end of the second telescopic rod 41 is rotatably connected to the second rotating shaft 53.

[0056] A method of using a loading device with dynamically perpendicular force and force arm includes the following steps:

[0057] Fix the pile foundation 43 on the top of the pile fixing mechanism and adjust the inclination angle of the pile fixing mechanism according to the direction of the load to be applied.

[0058] Place the pile foundation 43 coaxially in the seat groove 28, and adjust the adjusting rod 29 according to the different outer diameter sizes of the pile foundation 43 so that the limiting ball 31 abuts against the outer side wall of the pile foundation 43. The articulated ball 26 is articulated in the spherical groove 25 and there is damping contact between the two. When it is necessary to make the pile foundation 43 in a vertical position, the articulated ball 26 and the spherical groove 25 are not adjusted. When it is necessary to make the pile foundation 43 inclined to a certain angle, the articulated ball 26 can be rotated by a certain angle in the spherical groove 25.

[0059] Adjust the position of the height adjusting mechanism, and apply a horizontal load or a first inclined load to the side wall of the pile foundation 43 through the first load loading mechanism.

[0060] According to the position of the force to be applied to the side wall of the pile foundation 43, adjust the height of the lifting frame 9, and then according to the inclination angle of the force to be applied to the side wall of the pile foundation 43, use the third motor 17 and the first swinging shaft 19 to adjust the inclination angle of the first telescopic rod 21 so that the applied force has a certain inclination angle.

[0061] The magnitude and direction of the applied force can be dynamically adjusted at any time. The dynamic adjustment is realized by the controller. A plurality of pressure sensors and force direction sensors are arranged in the whole device, and the two types of sensors are electrically connected to the controller. In this way, the controller can receive the force information transmitted by the pressure sensors and force direction sensors at any time, and control the working processes of the first motor 4, the second motor 12 and the third motor 17 according to the received force information. By adjusting the angle of the first telescopic rod 21 and the telescopic length of the telescopic end of the first telescopic rod through the three motors, the purpose of dynamically adjusting the magnitude and angle of the force can be achieved.

[0062] Adjust the position of the second load applying mechanism to apply a vertical load or a second inclined load to the top of the pile foundation 43.

[0063] When applying a load to the top of the pile foundation 43 through the second telescopic rod 41, if the pile foundation 43 is in a vertical position, adjust the second telescopic rod 41 to a position directly above the top of the pile foundation 43 through the fourth slide plate 35 and the slide seat 46, and then extend the second telescopic rod 41 so that the second top ball 42 applies a force to the top of the pile foundation 43. If the pile foundation 43 is at a certain inclination angle, adjust the second telescopic rod 41 to the corresponding position of the top of the pile foundation 43 through the fourth slide plate 35 and the slide seat 46, and then adjust the inclination angle of the second telescopic rod 41 through the sixth motor 44 and the seventh motor 49 to make the central axis of the second telescopic rod 41 coincide with the central axis of the pile foundation 43, and apply a load to the top of the pile foundation 43 again.

[0064] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0065] The above-described embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope of the present invention.

Claims

1. A loading device with dynamic vertical force and lever arm, characterized in that: include Support frame; A height adjustment mechanism, fixedly arranged at the bottom end of the support frame; A first load loading mechanism, movably arranged inside the height adjustment mechanism, the first load loading mechanism being used to apply a first load to a side wall of the pile foundation (43); A second load loading mechanism, fixedly arranged at the top of the support frame, the second load loading mechanism being used to apply a second load to the top of the pile foundation (43); A pile fixing mechanism is fixedly arranged at the bottom end of the support frame, the central axis of the pile fixing mechanism coincides with the central axis of the height adjustment mechanism, and the pile fixing mechanism is used to install and fix the pile foundation (43) and adjust the inclination angle of the pile foundation (43).

2. A loading device with dynamic vertical force and lever arm according to claim 1, characterized in that: The height adjustment mechanism comprises a first motor (4), the first motor (4) is fixedly arranged at a corner of the bottom end of the support frame, the output shaft of the first motor (4) is fixedly connected to the bottom end of a vertically arranged first lead screw (5), the top end of the first lead screw (5) is rotatably connected to a first lead screw seat (6), the first lead screw seat (6) is fixedly connected to the side wall of the support frame, the other three corners of the support frame are respectively fixedly connected to the bottom ends of vertically arranged first light rods (7), the top end of the first light rod (7) is fixedly connected to a first light rod seat (8), The first light rod seat (8) is fixedly connected to the side wall of the support frame; the first lead screw (5) and the three first light rods (7) are movably connected to a lifting frame (9); a gear ring (10) is rotatably arranged on the inner side wall of the lifting frame (9); the gear ring (10) is meshed with an internal gear; the internal gear is rotatably arranged in the lifting frame (9); the internal gear is fixedly arranged on the output shaft of the driving motor; the driving motor is fixedly arranged on the lifting frame (9); and the first load loading mechanism is fixedly arranged on the gear ring (10).

3. A loading device with dynamic vertical force and lever arm according to claim 2, characterized in that: The first load loading mechanism comprises a first adjusting part, the first adjusting part is rotatably arranged on the gear ring (10), the first adjusting part is rotatably connected to the fixed end of a first telescopic rod (21), the telescopic end of the first telescopic rod (21) is fixedly connected to a first top ball (11), and the first top ball (11) is close to the pile foundation (43).

4. A loading device with dynamic vertical force and lever arm according to claim 3, characterized in that: The first adjusting part comprises a connecting shaft (15), one end of the connecting shaft (15) is rotatably connected to the gear ring (10), the other end of the connecting shaft (15) is fixedly connected to a first connecting seat (14), a second driven gear (16) is fixedly sleeved on the outer side of the connecting shaft (15), a second motor (12) is fixedly connected to the gear ring (10), an output shaft of the second motor (12) is fixedly connected to a second driving gear (13), the second driving gear (13) is transmission-engaged with the second driven gear (16), a first rotating shaft (22) is fixedly connected inside the first connecting seat (14), a fixed end of the first telescopic rod (21) is rotatably connected to the first rotating shaft (22), a first swinging part is arranged on the first connecting seat (14), and the first swinging part is transmission-connected to the first telescopic rod (21).

5. A loading device with dynamic vertical force and lever arm according to claim 4, characterized in that: The first swinging part comprises a third motor (17), the third motor (17) is fixedly connected to the first connecting seat (14), the output shaft of the third motor (17) is coaxial with the first rotating shaft (22), the output shaft of the third motor (17) is fixedly connected to one end of a third connecting rod (18), the other end of the third connecting rod (18) is rotatably connected to a first swinging shaft (19), the first swinging shaft (19) is movably arranged in a first arc-shaped hole (20) opened in the first connecting seat (14), and the first swinging shaft (19) is fixedly connected to the fixed end of the first telescopic rod (21).

6. A loading device with dynamic vertical force and lever arm according to claim 1, characterized in that: The pile fixing mechanism comprises a fixing seat (23), the bottom end of the fixing seat (23) is fixedly connected to the bottom end of the supporting frame, the top end of the fixing seat (23) is fixedly connected to a connecting seat (24), the top end of the connecting seat (24) is fixedly connected to a spherical groove (25), a hinge ball (26) is rotatably connected inside the spherical groove (25), and the hinge ball (26) is fixedly connected to the pile fixing part.

7. A loading device with dynamic vertical force and lever arm according to claim 6, characterized in that: The pile fixing part comprises a pile seat (27), the bottom end of the pile seat (27) is fixedly connected to the hinge ball (26), the top end of the pile seat (27) is provided with a seat groove (28), the pile foundation (43) is detachably installed in the seat groove (28), a plurality of adjusting rods (29) are threadedly connected to the side wall of the seat groove (28), the plurality of adjusting rods (29) are arranged at equal intervals along the circumference and axial direction of the seat groove (28), one end of the adjusting rod (29) located inside the seat groove (28) is fixedly connected to a limiting ball (31), and the other end of the adjusting rod (29) is fixedly connected to a handle (30).

8. A loading device with dynamic vertical force and lever arm according to claim 1, characterized in that: The second load loading mechanism comprises a horizontal position adjustment part, the horizontal position adjustment part is fixedly arranged at the top end of the support frame, the bottom end of the horizontal position adjustment part is rotatably connected to the second adjustment part, the bottom end of the second adjustment part is fixedly connected to a second connecting seat (48), the second connecting seat (48) is rotatably connected to the fixed end of the second telescopic rod (41), the telescopic end of the second telescopic rod (41) is fixedly connected to a second top ball (42), the second connecting seat (48) is fixedly connected to a second swinging part, and the second swinging part is transmission-connected to the fixed end of the second telescopic rod (41).

9. A loading device with dynamic vertical force and lever arm according to claim 8, characterized in that: The second adjusting part comprises a sixth rotating shaft (47), the top end of the sixth rotating shaft (47) is rotatably connected to the bottom end of the horizontal position adjusting part, the second connecting seat (48) is fixedly connected to the bottom end of the sixth rotating shaft (47), the bottom end of the horizontal position adjusting part is fixedly connected to a sixth motor (44), the output shaft of the sixth motor (44) is fixedly connected to a sixth driving gear (45), and the sixth driving gear (45) is transmission-connected to the sixth rotating shaft (47).

10. A method for using the force and arm dynamic vertical loading device according to any one of claims 1 to 9, characterized in that: The following steps are involved: The pile foundation (43) is fixedly mounted on the top of the pile fixing mechanism, and the inclination angle of the pile fixing mechanism is adjusted according to the load direction to be loaded; Adjusting the position of the height adjustment mechanism, and applying a horizontal load or a first inclined load to the side wall of the pile foundation (43) through a first load loading mechanism; The position of the second load loading mechanism is adjusted to apply a vertical load or a second inclined load to the top of the pile foundation (43).

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