Load device for slope test

Abstract

The utility model provides a slope test load device, which is characterized in that load supporting columns are fixed at four corners of a slope model, cross beams are arranged among the load supporting columns, sliding sleeves are sleeved on the cross beams, shaft seats are arranged on ring sleeves, deflection shafts are arranged among the cross beams through the shaft seats, and hoops are arranged in the middle of the deflection shafts. A load oil cylinder is installed in the middle section of the deflection shaft through a hoop, an angle adjusting plate is arranged at the end of the deflection shaft, a penetrating hole is formed in the end of the angle adjusting plate, positioning holes are formed in the outer side face of the sliding sleeve, the penetrating hole coincides with the corresponding positioning holes by rotating the angle adjusting plate, and positioning pins are inserted into the penetrating hole and the positioning holes which coincide. The angle of the deflection shaft is fixed through the positioning pin. According to the slope test loading device provided by the utility model, through an innovative design, a multi-direction, high-precision and easy-to-operate loading function is realized, strong support is provided for a slope model test, and the stability and behavior characteristics of a slope can be deeply researched.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of slope model test equipment, and particularly relates to a slope test load device. BACKGROUND

[0002] Slope model load test is mainly used for simulating the stability analysis of actual engineering slope under different external conditions. It simulates the behavior of actual slope under different conditions by constructing a reduced scale slope model, which can be used to study the response characteristics of slope under the influence of factors such as earthquake, rainfall, and human loading, so as to provide scientific basis for the design, reinforcement and disaster prevention of slope, and to evaluate the stability of slope, predict potential risks, and provide basis for the design, reinforcement and management of slope.

[0003] Slope model load has the advantages of low cost, strong repeatability, and good control of experimental conditions. In model design and production, appropriate scaling ratio should be selected according to the size of actual slope and experimental purpose, both to ensure the representativeness of the model and to consider the experimental space and material cost. According to the research purpose, appropriate loading mode should be selected, such as static loading, dynamic loading (simulation of earthquake), cyclic loading, etc. Slope model test is an important bridge connecting theoretical research and engineering practice, and has important significance for improving the safety and economy of slope engineering. Through careful design and implementation of such test, researchers can have a deeper understanding of the behavior mechanism of slope, and make contributions to the prevention and mitigation of slope disasters.

[0004] Among them, the use of top oil cylinder to provide load is a common load providing method in slope model load test, which can accurately simulate the vertical force borne by the actual slope in engineering. The top oil cylinder generates thrust or pull force through the hydraulic system, acting on the top and slope surface of the slope model, so as to simulate the gravity or other forms of load on the upper part of the slope. The movement of the oil cylinder can be accurately controlled by the control system to realize constant load, step loading, cyclic loading and other loading modes.

[0005] The load provided by the traditional top oil cylinder is usually applied vertically downward, which may not fully simulate the complex load conditions of the actual slope in some cases. The existing top oil cylinder load providing method has a fixed load applying direction, which is generally perpendicular to the horizontal plane; when loading on the slope surface, it cannot well fit the slope surface; it cannot provide load perpendicular to the slope surface. SUMMARY

[0006] In view of the above problems, the present application provides a slope test load device capable of providing load demand in different directions.

[0007] The utility model solves its technical problem adopts the scheme that a kind of side slope test load device, including model box, side slope model is made in model box, it is characterized in that, four corners of side slope model are fixed with load support column, crossbeam is set between load support column, the crossbeam is provided with two, two crossbeams are located at the two sides of side slope model respectively, sleeve is equipped on crossbeam, shaft seat is set on ring, deflection shaft is installed between crossbeam by shaft seat, the middle part of deflection shaft is provided with clamp, load oil cylinder is installed in the middle section of deflection shaft by clamp, the output end of load oil cylinder faces side slope model, shaft hole is set on the output end of load oil cylinder, and pressure plate is hinged by shaft hole, the end of angle adjusting plate is fixed on deflection shaft, the other end extends outward and is provided with perforation at end, with the axis of deflection shaft as midpoint, a plurality of positioning holes are evenly provided on the outer side of sleeve, by rotating angle adjusting plate, so that the perforation and the corresponding positioning hole coincide, positioning pin is inserted in coincident perforation and positioning hole, and the angle of deflection shaft is fixed by positioning pin.

[0008] Further, the center of the pressure plate is fixed with a shaft seat, and the pressure plate is installed on the output end of the load oil cylinder through the shaft seat.

[0009] Further, the positioning hole is a threaded hole, and the positioning hole is provided with an internal thread. The insertion end of the positioning pin is provided with an external thread. The positioning pin is inserted into the perforation and the positioning hole by rotating, to fix the deflection shaft.

[0010] Further, the positioning pin is a lifting ring pin, and a lifting ring is arranged at the tail end of the positioning pin.

[0011] Further, the model box is a rectangular box body, and an angle iron is used to weld the frame of the rectangular box body. A metal plate is fixed on the bottom surface of the rectangular box body. Transparent plates are fixed on the four side surfaces of the rectangular box body. The transparent plates on the side surfaces and the metal plate are sealingly fixed.

[0012] Further, the pressure plate is a rectangular plate, and the length of the pressure plate is the same as the width of the side slope model, so that the side slope model can be better provided with load.

[0013] The side slope test load device has multiple advantages, and can effectively improve the accuracy and practicality of the side slope model test.

[0014] The output direction of the load oil cylinder can be easily adjusted by the design of the deflection shaft and the angle adjusting plate, and multi-directional loading can be realized. This makes the experiment more realistically simulate various complex loads, such as water erosion force along the slope surface, wind force, etc.

[0015] The load oil cylinder is fixed on the deflection shaft through a clamp, which ensures the stability and accuracy during the loading process. At the same time, the design of the sliding sleeve and the cross beam provides additional support to prevent the oil cylinder from shaking or deviating during the loading process. Through the cooperation of the angle adjusting plate and the positioning hole, the angle of the load oil cylinder can be accurately fixed, ensuring that the loading conditions of each experiment are consistent, and improving the repeatability and reliability of the experimental results. Only need to rotate the angle adjusting plate and insert the positioning pin to quickly fix the required angle, which is simple and fast to operate.

[0016] The side slope test load device provided by the utility model realizes the loading function of multi-direction, high precision and easy operation through the innovative design, provides strong support for the side slope model test, and helps to more deeply study the stability and behavior characteristics of the side slope. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a three-dimensional structure schematic diagram of the utility model.

[0018] Figure 2 It is a side structure schematic diagram of the utility model.

[0019] Figure 3 It is Figure 1 A part enlarged view of A in the middle.

[0020] Figure 4 It is a state diagram of pressure exertion of different direction loads.

[0021] Marked number in the figure: 1, model box; 2, side slope model; 3, load support column; 4, cross beam; 5, sliding sleeve; 6, deflection shaft; 7, load oil cylinder; 8, clamp; 9, lifting ring pin; 10, pressure bearing plate; 501, positioning hole; 601, angle adjusting plate. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the present application more clear, the technical scheme of the present application will be described in detail below.

[0023] Embodiment 1: The utility model provides a kind of side slope test load device, can provide load for side slope model top and slope face, can also provide different direction load demand.

[0024] Specifically, as shown in Figure 1 And Figure 2 The side slope test load device provided by the utility model includes a model box, which is a rectangular box body. The frame of the rectangular box body is composed of angle iron welded. A metal plate is laid on the bottom of the rectangular box body as a pressure bearing base for the side slope model. Transparent plates are fixed on the four inner sides of the box body. The transparent plates can be made of organic glass plates or acrylic plastic plates. The transparent plates are sealingly connected to each other and to the metal plate. Sealant is filled in the corresponding joints.

[0025] Create and set up a slope model in the model box. The slope model includes at least a top surface and a slope surface.

[0026] The model box has load-bearing support columns fixed vertically at its four corners. The height of the load-bearing support columns is higher than the height of the model box. Fixed crossbeams, at least two in number, are installed between the tops of the load-bearing support columns and are fixed parallel to each other on both sides of the slope model. A sliding sleeve is fitted onto each crossbeam, and a bearing is fixed to the sliding sleeve. Specifically, the bearing is fixedly positioned to the sliding sleeve. Figure 2 As shown, the bearing is located below the crossbeam, which brings the load cylinder closer to the slope model, reducing the stroke of the load cylinder when applying load. At the same time, the crossbeam can provide a reaction force during the application of load, making it easier for the load cylinder to apply load.

[0027] A deflection shaft is installed between the sliding sleeves, with each end of the shaft fitted into a separate bearing. A clamp is positioned in the middle of the deflection shaft, through which a load cylinder is mounted. The output end of the load cylinder faces the downward-facing slope model and has a shaft hole through which a pressure plate is mounted. Specifically, as shown... Figure 2 As shown, a bearing plate has a central bearing seat, which hinges the bearing plate to the output end of the load cylinder. The bearing plate is rectangular, with a length equal to the width of the slope model, which allows it to better provide load to the slope model.

[0028] like Figure 3 As shown, the two ends of the deflection shaft extend to the outside of the two side bushings. An angle adjustment plate is provided at the end of the deflection shaft, and the angle adjustment plate is parallel to the outer surface of the sliding sleeve. One end of the angle adjustment plate is fixed to the deflection shaft, and the other end is provided with a through hole. A series of positioning holes are provided on the sliding sleeve above the deflection shaft in a circular array with the axis of the deflection shaft as the center point. The distance from the through hole at the end of the angle adjustment plate to the center of the deflection shaft is equal to the distance from the positioning hole to the center of the deflection shaft, so that when the angle adjustment plate rotates, the through hole can coincide with the positioning hole. When the through hole and the positioning hole coincide, a positioning pin is inserted into the through hole and the positioning hole. The positioning pin is a lifting ring pin, that is, a lifting ring is provided at the tail end of the positioning pin for easy removal and placement of the positioning pin.

[0029] The positioning hole is a threaded hole with an internal thread, and the insertion end of the positioning pin has an external thread. The positioning pin is inserted into the through hole and the positioning hole by a knob to fix the deflection shaft.

[0030] like Figure 4As shown, by moving the sliding sleeve, the load cylinder can correspond to different positions of the slope model, wherein ① is that the load cylinder applies load to the top of the slope model; ② is that the load cylinder applies load to the slope surface vertically, wherein by adjusting the angle of the pressure plate, the pressure plate is parallel to the slope surface, so as to better apply load; ③ is that the load cylinder applies load to the slope surface at an angle perpendicular to the slope surface, by rotating the angle adjusting plate, the load cylinder is perpendicular to the slope surface, by inserting the lifting ring pin into the perforation and the positioning hole, the deflection shaft is fixed, so that the load cylinder remains in the state of being perpendicular to the slope surface to apply load.

[0031] Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

Claims

1. A side slope test load device comprising a model case (1) in which a side slope model (2) is made, characterized by, The four corners of the slope model (2) are fixed with load support columns (3), and cross beams (4) are arranged between the load support columns (3), the cross beams (4) are provided with two, and the two cross beams (4) are located on the two sides of the slope model (2), the cross beams (4) are sleeved with sliding sleeves (5), the shaft seats are arranged on the ring sleeves, the deflection shafts (6) are installed between the cross beams (4) through the shaft seats, the middle part of the deflection shaft (6) is provided with a hoop (8), the load oil cylinder (7) is installed on the middle section of the deflection shaft (6) through the hoop (8), the output end of the load oil cylinder (7) faces the slope model (2), the shaft hole is arranged on the output end of the load oil cylinder (7), and the pressure bearing plate (10) is hinged through the shaft hole, The end of the deflection shaft (6) is provided with an angle adjusting plate (601), one end of the angle adjusting plate (601) is fixed on the deflection shaft (6), the other end extends outward and is provided with a perforation at the end, the shaft center of the deflection shaft (6) is taken as a midpoint, a plurality of positioning holes (501) are uniformly arranged on the outer side of the sliding sleeve (5), the perforation is coincided with the corresponding positioning hole (501) by rotating the angle adjusting plate (601), the positioning pin is inserted in the coincided perforation and positioning hole (501), and the deflection shaft (6) is angularly fixed by the positioning pin.

2. The apparatus of claim 1, wherein: The center of the pressure bearing plate (10) is fixed with a shaft seat, and the pressure bearing plate (10) is installed on the output end of the load oil cylinder (7) through the shaft seat.

3. The apparatus of claim 1, wherein: The positioning hole (501) is a threaded hole, the positioning hole (501) is provided with an internal thread, the insertion end of the positioning pin is provided with an external thread, and the positioning pin is inserted into the perforation and the positioning hole (501) by rotating, so that the deflection shaft (6) is fixed.

4. The apparatus of claim 3, wherein: The positioning pin is a lifting eye pin (9), and the lifting eye is arranged at the tail end of the positioning pin.

5. The apparatus of claim 1, wherein: The model box (1) is a rectangular box body, angle iron is used to weld the frame of the rectangular box body, a metal plate is fixed on the bottom surface of the rectangular box body, and transparent plates are fixed on the four side surfaces of the rectangular box body, and the transparent plates and the metal plate are sealingly fixed.

6. The apparatus of claim 2, wherein: The pressure bearing plate (10) is a rectangular plate, the length of which is the same as the width of the slope model (2), so that the slope model (2) can be better provided with load.

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