A rigid boundary friction reducing structure

Abstract

The application provides a rigid boundary friction reduction structure, which comprises a plurality of rigid friction reduction plates which are sequentially spliced and a smooth film arranged on the rigid friction reduction plates; each of the rigid friction reduction plates is provided with a film clamping groove and a sliding rail at intervals, a sliding block is arranged in the sliding rail, and a film clamping screw is arranged on the sliding block; and the smooth film is detachably arranged on the film clamping groove and the film clamping screw. The structure can select different friction reduction assembly modes according to different material properties and friction reduction requirements, is more convenient and efficient to assemble, does not need to clean lubricating oil after the test is completed, avoids a series of problems that lubricating oil seeping into experimental materials affects the reliability of the test, and makes the test result more accurate and reasonable.

Description

Technical Field

[0001] This application relates to the field of geotechnical engineering, and in particular to a rigid boundary friction-reducing structure. Background Technology

[0002] With the rapid development of geotechnical engineering testing methods, many spatial testing devices for sand and soil in geotechnical engineering are currently facing the problem of large frictional effects between the filling material and the boundary. This problem will greatly affect the reliability of test data, leading to inaccurate test data or even scrapping the device.

[0003] For model tests of materials such as sand and soil, the traditional method for addressing the frictional effect of rigid boundaries is to apply lubricating oil to the boundaries to reduce friction. However, this leads to many problems, such as the need to consider the issue of preventing oil leakage, the impact of oil seeping into the packing material on its physicochemical properties, the need to clean the lubricating oil after each test, and the issue of excessive oil slippage before the packing material is filled.

[0004] Therefore, the existing method of applying lubricating oil is not conducive to the conduct of experiments, and it is also inconvenient to clean up, bringing a series of cumbersome problems to the model test. Summary of the Invention

[0005] One of the purposes of this application is to provide a rigid boundary friction-reducing structure, which aims to solve the problem of large friction between the filling material and the boundary in existing material model testing devices.

[0006] The technical solution of this application is:

[0007] A rigid boundary friction reduction structure includes multiple rigid friction reduction plates that are sequentially and detachably spliced ​​together, and a smooth membrane that is detachably disposed on the rigid friction reduction plates; each rigid friction reduction plate is provided with a membrane clamping groove and a slide rail at intervals, a slider is disposed in the slide rail, and a membrane clamping screw is disposed on the slider; the smooth membrane is disposed on the membrane clamping groove and the membrane clamping screw.

[0008] As one technical solution of this application, a splicing strip is provided on one side of the rigid friction-reducing plate in the middle, and a splicing groove is provided on the other side. Adjacent rigid friction-reducing plates are connected by the splicing strip and the splicing groove through tenon and mortise joints. A splicing strip is provided on one side of one of the outermost rigid friction-reducing plates, and a splicing groove is provided on one side of the other outermost rigid friction-reducing plate.

[0009] As one technical solution of this application, the rigid friction reducing plate has a connecting hole at its end, and the rigid friction reducing plate at the bottom and the rigid friction reducing plate at the top are connected by inserting a connecting strip into the two corresponding connecting holes.

[0010] As one technical solution of this application, the card slot is disposed at the edge end of the rigid friction-reducing plate.

[0011] As one technical solution of this application, the smooth film includes multiple layers, which are sequentially laid from bottom to top on the film-clamping groove and the film-clamping screw, and are detachably connected to the film-clamping groove and the film-clamping screw respectively, and lubricating oil is applied between adjacent smooth films.

[0012] As one technical solution of this application, the smooth film includes two layers. The lower smooth film is detachably disposed on the film slot and the film screw, and the upper smooth film is detachably disposed on the film slot. Lubricating oil is applied between the two smooth films.

[0013] As one technical solution of this application, the slide rail is arranged along the length direction of the rigid friction reducing plate, and each slide rail is equipped with multiple movable sliders, and adjacent sliders are provided with a stop block that is detachably installed on the slide rail.

[0014] As one technical solution of this application, each slider has a groove on its opposite sides, and a rotatable ball is installed in the groove. The ball is movably disposed on the slide rail.

[0015] As one technical solution of this application, the slider has a groove, the diaphragm screw is installed in the groove, and a cover plate is hinged to the groove, the cover plate being used to open or close the groove.

[0016] As one technical solution of this application, the smooth membrane is installed on the membrane screw by means of a nut.

[0017] This application has the following beneficial effects:

[0018] (1) This structure can effectively reduce the friction between the filling material and the boundary in the material model test device, so that the entire space of the material model test device can be tested, which greatly saves the cost of the material model test device, greatly reduces the consumption of test materials, and effectively reduces the material loading time.

[0019] (2) This structure is applicable to the testing of various types of material model testing devices. It can be assembled in both the horizontal and vertical directions. It can solve the problem of small openings and inability to bring in existing material model testing devices. At the same time, it can be assembled in different forms according to different test requirements to meet different usage needs. It is highly practical and has a wide range of applications.

[0020] (3) This structure contains multiple sliding balls. The presence of the sliding balls allows the slider to move up and down, which in turn allows the smooth film to move up and down. This allows the smooth film to move together with the material under the action of the sliding balls without hindering the material's movement. Therefore, under its synergistic effect with the film groove, it can effectively reduce the frictional influence between the material and the boundary, thus ensuring the accuracy of the test data.

[0021] (4) By installing a removable smooth membrane, this structure can avoid the interaction between the coating and the material, and also avoid the coating from losing its original function due to weathering after being exposed for a long time. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the rigid boundary friction reduction structure provided in this application;

[0024] Figure 2 A schematic diagram of the slider provided in this application;

[0025] Figure 3 A schematic diagram of the rigid friction-reducing plate provided in this application;

[0026] Figure 4 This is a schematic diagram of the first angle of the rigid friction-reducing plate provided in this application.

[0027] Icons: 1-Rigid friction reduction plate; 2-Membrane groove; 3-Slide rail; 4-Slider; 5-Membrane screw; 6-Splicing strip; 7-Splicing groove; 8-Connecting hole; 9-Connecting strip; 10-Stop block; 11-Slide groove. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the description of this application, it should be noted that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only used to facilitate the description of this application and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0032] Furthermore, in this application, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Moreover, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] Example:

[0036] Please refer to Figure 1 (Refer to) Figures 2 to 4 This application provides a rigid boundary friction reduction structure, which includes multiple rigid friction reduction plates 1 that are sequentially and detachably spliced ​​together, and a smooth membrane detachably disposed on the rigid friction reduction plates 1. The overall rigid boundary friction reduction structure is composed of multiple rigid friction reduction plates 1, which can be freely spliced ​​together to form a rigid boundary friction reduction structure of suitable size. This structure is applicable to various types of model tests and can be assembled in both the transverse and longitudinal directions. Some existing model test devices install jacks at the top and leave space on the sides to apply loads at the top. The lower filling port of this type of device cannot carry large items inside, while this structure can solve the problem of the small opening of the model test device, which cannot carry large items inside. Each rigid friction reducing plate 1 is provided with a film clamping groove 2 and a slide rail 3 at intervals. The slide rail 3 is arranged along the length of the rigid friction reducing plate 1, and each slide rail 3 is equipped with multiple movable sliders 4. A stop block 10 that is detachably installed on the slide rail 3 is provided between adjacent sliders 4. In addition, a film clamping screw 5 is provided on the slider 4. At the same time, the smooth film is detachably set on the film clamping groove 2 and the film clamping screw 5.

[0037] Furthermore, a splicing strip 6 is provided on one side of the middle rigid friction-reducing plate 1, and a splicing groove 7 is provided on the other side. Adjacent rigid friction-reducing plates 1 are joined together by mortise and tenon joints using the splicing strip 6 and the splicing groove 7. A splicing strip 6 is provided on one side of one of the outermost rigid friction-reducing plates 1, and a splicing groove 7 is provided on one side of the other outermost rigid friction-reducing plate 1. In addition, a connecting hole 8 is provided at the end of the rigid friction-reducing plate 1. Therefore, the lower rigid friction-reducing plate 1 and the upper rigid friction-reducing plate 1 are connected by inserting a connecting strip 9 into the two corresponding connecting holes 8.

[0038] It should be noted that the film groove 2 is located at the edge end of the rigid friction reducing plate 1.

[0039] Meanwhile, the smooth film can be multi-layered, with multiple smooth films laid sequentially from bottom to top on the film clamping groove 2 and the film clamping screw 5, and detachably connected to the film clamping groove 2 and the film clamping screw 5, with lubricating oil applied between adjacent smooth films. Furthermore, if higher friction is required, the smooth film can be two layers: a lower smooth film detachably mounted on the film clamping groove 2 and the film clamping screw 5, and an upper smooth film detachably mounted on the film clamping groove 2, with lubricating oil applied between the two smooth films. Specifically, the smooth film is installed on the film clamping screw 5 via a nut.

[0040] It should be noted that most existing friction reduction measures are implemented through coatings, which can lead to interactions between the coating and the material, or the coating losing its original function due to weathering after prolonged exposure. In contrast, this application uses a removable smooth film to avoid the interaction between the coating and the material, as well as the loss of the coating's original function due to weathering after prolonged exposure.

[0041] Furthermore, each slider 4 has a groove 11 on its opposite sides, and a rotatable ball bearing is installed in the groove 11. The ball bearing is movably mounted on the slide rail 3 and slides in the groove 11, thereby driving the slider 4 to slide up and down. Additionally, each slider 4 has a groove, in which a membrane clamping screw 5 is installed, and a cover plate is hinged to the groove for opening or closing. The slider 4 is the main friction-reducing structure. Each slider 4 contains a removable stop 10. The main function of the stop 10 is to separate the sliding areas of adjacent sliders 4, preventing them from colliding. This is suitable for use when the material displacement is small. If the test material displacement is large, the stop 10 can be removed. Each slider 4 can be opened, and its inner cavity contains a membrane clamping screw 5. When processing materials with high water content or materials containing other liquids, a smooth membrane can be fixed on the membrane clamping screw 5 and secured with a matching nut. Each membrane clamping screw 5 can secure multiple layers of smooth membrane. Meanwhile, because it contains multiple sliding balls, the presence of the sliding balls allows the slider 4 to move up and down, which in turn allows the smooth film to move up and down as well. This allows the smooth film to move together with the material under the action of the sliding balls, without hindering the material's movement. Therefore, in synergy with the film-clamping groove 2, it can effectively reduce the frictional impact between the material and the boundary, thus ensuring the accuracy of the test data.

[0042] The rigid friction reducing plate 1 can be directly used to reduce friction between the test boundary and the material. If the test material contains other liquids, this structure can also be used in combination with a smooth membrane. Each rigid friction reducing plate 1 contains a membrane clamping groove 2, which detachably connects multiple smooth membranes. Before the test begins, the smooth membrane is detachably connected and installed on the membrane clamping groove 2, and at the same time, the smooth membrane is installed on the membrane clamping screw 5, and then the material is loaded. If the friction requirement is high, two smooth membranes can be fixed. The lower smooth membrane is detachably connected to the membrane clamping groove 2 and the membrane clamping screw 5 on the slider 4, while the upper smooth membrane is only detachably connected to the membrane clamping groove 2. Lubricating oil can also be applied between the two smooth membranes, which can greatly reduce friction. At the same time, the lubricating oil between the smooth membranes is also easy to clean.

[0043] In addition, the splicing of its rigid friction-reducing plate 1 is shown in the figure. Figure 3 , Figure 4 The horizontal splicing of the rigid friction-reducing plates 1 is completed by splicing strips 6 and splicing grooves 7 on their side walls. The dimensions of the splicing strips 6 and splicing grooves 7 correspond, and the splicing strips 6 slide along the splicing grooves 7. The vertical splicing of the rigid friction-reducing plates 1 is completed by connecting holes 8 and connecting strips 9. Two identical rigid friction-reducing plates 1 are placed one above the other, their connecting holes 8 are aligned, and then the connecting strips 9 are inserted into the corresponding connecting holes 8 to complete the splicing. The connecting holes 8 extend along the length of the rigid friction-reducing plates 1 and are parallel to and spaced apart from the splicing grooves 7. The connecting holes 8 on the bottom row of rigid friction-reducing plates 1 do not penetrate through their top and bottom ends, and their depth can be set to half the length of the rigid friction-reducing plate 1, or different designs can be made according to actual needs; while the connecting holes 8 in the middle position penetrate through the top and bottom ends of the rigid friction-reducing plates 1. Therefore, this structure is applicable to various types of material model testing devices. It can be assembled in both the horizontal and vertical directions, which solves the problem of small openings and inability to bring in existing material model testing devices. At the same time, it can be assembled in different ways according to different testing needs to meet different usage requirements. It is highly practical and has a wide range of applications.

[0044] The installation process for this structure is as follows:

[0045] First, install the smooth membrane on the slider 4. At this time, the slider 4 is at the lowest point under the action of gravity. Move the smooth membrane upward, and the slider 4 will be driven to the highest point by the smooth membrane. Install the smooth membrane on the film clamping groove 2. At this time, the slider 4 is also fixed at the highest point. After the filling is completed, remove the smooth membrane from the film clamping groove 2. At this time, the smooth membrane can be moved.

[0046] Furthermore, many current indoor model tests suffer from friction between the material and the outer wall. Many tests employ various methods to reduce friction, such as customizing larger devices and selecting smaller test areas. While effective, this approach increases costs, labor, and material consumption. This structure, however, effectively reduces friction between the filling material and the boundary in the material model testing device, allowing testing to be conducted throughout the entire device. This significantly reduces the cost of the device, lowers material consumption, and effectively shortens material loading time.

[0047] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A rigid boundary friction-reducing structure, characterized in that, The system comprises multiple rigid friction-reducing plates that are sequentially and detachably assembled, and a smooth membrane detachably disposed on the rigid friction-reducing plates. Each rigid friction-reducing plate is provided with a membrane-clamping groove and a slide rail at intervals. A slider is disposed in the slide rail, and a membrane-clamping screw is disposed on the slider. The smooth membrane is disposed on the membrane-clamping groove and the membrane-clamping screw. The membrane-clamping groove is disposed at the edge end of the rigid friction-reducing plate. The smooth membrane comprises two layers: the lower layer of the smooth membrane is detachably disposed on the membrane-clamping groove and the membrane-clamping screw, and the upper layer of the smooth membrane is detachably disposed on the membrane-clamping groove and the membrane-clamping screw. Lubricating oil is applied to the film groove and between the two layers of smooth film; the slide rail is arranged along the length of the rigid friction-reducing plate, and multiple movable sliders are installed on each slide rail, with a stop block detachably installed on the slide rail between adjacent sliders; a groove is opened on opposite sides of each slider, and a rotatable ball is installed in the groove, the ball being movably disposed on the slide rail; after filling is completed, the connection between the smooth film and the film groove is released, so that the smooth film moves along the slide rail under the drive of the slider.

2. The rigid boundary friction-reducing structure according to claim 1, characterized in that, The rigid friction-reducing plate in the middle has a splicing strip on one side and a splicing groove on the other side. Adjacent rigid friction-reducing plates are connected by the splicing strip and the splicing groove through mortise and tenon joints. One of the outermost rigid friction-reducing plates has a splicing strip on one side, and the other outermost rigid friction-reducing plate has a splicing groove on one side.

3. The rigid boundary friction-reducing structure according to claim 2, characterized in that, The rigid friction-reducing plate has a connecting hole at its end. The lower rigid friction-reducing plate and the upper rigid friction-reducing plate are connected by inserting a connecting strip into the two corresponding connecting holes.

4. The rigid boundary friction-reducing structure according to claim 1, characterized in that, The slider has a groove, in which the diaphragm screw is installed, and a cover plate is hinged to the groove, which is used to open or close the groove.

5. The rigid boundary friction-reducing structure according to claim 4, characterized in that, The smooth membrane is mounted on the membrane screw by a nut.

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