Loess reinforcement combination performance test device

Abstract

The utility model belongs to the technical field of loess reinforcement performance testing, and particularly relates to a loess reinforcement combination performance testing device which comprises a bottom plate and a controller, the controller is fixedly arranged on the upper left portion of the bottom plate, a fixing frame is fixed on the upper right portion of the bottom plate, and a soil storage testing assembly is arranged on the inner side of the bottom end of the fixing frame. A lead screw is rotationally installed on the inner side of the top end of the fixing frame. The compression roller can be controlled to move downwards through the two electric telescopic rods, pressure is applied to a test soil body, the state stability of the soil body in the pressed state is observed, compression resistance limit data of the reinforced loess can be obtained, the pressure data can be conveniently obtained and transmitted to the controller to be displayed through the arrangement of the pressure sensor, and the test efficiency is improved. The servo motor is used for controlling the screw rod to rotate, and the movable frame can be controlled to drive the compression roller to horizontally and stably move, so that sufficient pressure detection on a test soil body is facilitated, multi-point data acquisition is performed, and the data accuracy of a test experiment is conveniently improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of loess reinforcement performance test, in particular to a loess reinforcement combined performance test device. Background Art

[0002] Loess reinforcement is a common construction technology and soil reinforcement technical means. It refers to adding tensile materials such as strips, fibers or grids to the soil, relying on tensile materials to improve the mechanical properties of the soil, thereby achieving the effect of improving the strength and stability of the soil.

[0003] In order to test the compressive properties of reinforced loess, it is necessary to use a performance test device to test the reinforced loess. However, there is a lack of more professional test devices on the market. Most of the existing test devices are not convenient for more comprehensive pressure testing of reinforced soil samples, resulting in a single test result and poor representativeness of the obtained data. In addition, it is not convenient for quick loading and unloading and replacement of soil samples on the device, and it is not convenient for testing various soil bodies. Therefore, it is urgent to improve the existing loess reinforcement combined performance test device and provide a loess reinforcement combined performance test device. Summary of the invention

[0004] The purpose of the utility model is to provide a loess reinforcement combined performance testing device with reasonable design, simple structure, which can fully pressurize and test reinforced soil samples and is convenient for quick loading and unloading of soil, so as to solve the problems existing in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A loess reinforcement combined performance test device comprises a base plate and a controller, wherein the controller is fixedly provided on the upper left side of the base plate, a fixing frame is fixedly provided on the upper right side of the base plate, a soil storage test assembly is provided on the inner side of the bottom end of the fixing frame, a screw rod is rotatably installed on the inner side of the top end of the fixing frame, a bracket is fixedly provided on the top right side wall of the fixing frame, a servo motor is fixedly installed on the upper end of the bracket, the output shaft of the servo motor is fixedly connected to the right end of the screw rod, a compressive strength test assembly is installed on the outer side of the screw rod, and a limit strip is fixedly connected to the middle position of the top inner wall of the fixing frame.

[0007] As a preferred embodiment, a guide groove is provided at the bottom of the right end of the fixing frame, and the guide groove includes an inclined section and a vertical section located at the rear end of the inclined section, and the inclined section and the vertical section of the guide groove are connected to each other.

[0008] As a preferred embodiment, the soil storage test assembly includes a soil storage box, a vertical groove, a fixed rod, a first spring and a handle. The soil storage box is movably placed on the inner side of the bottom end of the fixed frame. A vertical groove is provided on the outer wall in the middle of the right end of the soil storage box. A fixed rod is welded on the inner side of the vertical groove. The first spring is sleeved on the outer side of the bottom end of the fixed rod, and a handle is slidably sleeved on the outer side of the top end of the fixed rod.

[0009] As a preferred embodiment, one end of the handle is guided and slidably located in the vertical groove, and the other end of the handle is engaged with the fixing frame through the guide groove.

[0010] As a preferred embodiment, the compressive strength test assembly includes a movable frame, an electric telescopic rod, a mounting frame, a pressure roller, a pressure sensor, a sleeve and a second spring. The movable frame is threadedly sleeved on the outside of the screw rod, and the electric telescopic rod is fixedly installed on both ends of the movable frame. The pressure roller is rotatably installed on the inner side of the mounting frame. The upper end of the mounting frame is symmetrically fixed with pressure sensors in the front and back, and the outer side of the pressure sensor is sleeved with a sleeve. The bottom end of the sleeve is welded and fixed to the upper end surface of the mounting frame, and the top of the sleeve is slidably sleeved on the outside of the telescopic end of the electric telescopic rod. A second spring is fixedly connected between the telescopic end of the electric telescopic rod and the top of the pressure sensor.

[0011] As a preferred embodiment, the longitudinal section of the movable frame is in a "convex" shape, a groove structure is provided at the middle position of the top end of the movable frame, and the top of the movable frame is slidably connected to the limit bar through the groove structure.

[0012] In summary, the beneficial effects of the utility model are:

[0013] The two electric telescopic rods can be used to control the downward movement of the pressure roller and apply pressure to the test soil. The stability of the soil under pressure can be observed, and the compressive limit data of the reinforced loess can be obtained. The pressure sensor can be used to obtain the pressure data and transmit it to the controller for display. The servo motor can be used to control the rotation of the screw rod, and the movable frame can be controlled to drive the pressure roller to move horizontally and stably, which is convenient for fully pressurizing the test soil and collecting multi-point data, so as to improve the data accuracy of the test experiment. The stable vertical downward pressure roller can be used to carry out a standard uniaxial compression test on the reinforced soil sample. The pressure data of the reinforced soil and the displacement data of the pressure roller can also be used to analyze the friction characteristics of the reinforced soil interface under load.

[0014] When the soil storage box is placed on the bottom plate and pushed toward the inside of the fixing frame, one end of the handle can enter the inclined section of the guide groove, and as the soil storage box moves backward, the handle can be pressed and moved down along the fixing rod. When one end of the handle moves to the vertical section of the guide groove, the first spring can be used to raise and reset the handle and stably engage with the fixing frame, thereby achieving stable installation of the soil storage box, facilitating the soil reinforcement performance test, and also facilitating the quick disassembly and replacement of the soil storage box, and facilitating the testing of various reinforced soil samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional front view structural diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the three-dimensional upward structure of the utility model;

[0017] Figure 3 It is a right side structural schematic diagram of the fixing frame and the guide groove of the utility model;

[0018] Figure 4 This is a schematic diagram of the overall structure of the soil storage test assembly of the utility model;

[0019] Figure 5 This is a three-dimensional right-side structural schematic diagram of the utility model;

[0020] Figure 6 It is a schematic diagram of the overall structure of the compressive strength test assembly of the utility model.

[0021] In the figure: 1. base plate; 2. controller; 3. fixed frame; 4. soil storage test assembly; 41. soil storage box; 42. vertical slot; 43. fixed rod; 44. first spring; 45. handle; 5. guide slot; 6. screw rod; 7. servo motor; 8. bracket; 9. compressive strength test assembly; 91. movable frame; 92. electric telescopic rod; 93. mounting frame; 94. pressure roller; 95. pressure sensor; 96. sleeve; 97. second spring; 10. limit strip. DETAILED DESCRIPTION

[0022] The embodiments described below are only a part of the embodiments of the present invention and do not represent all the embodiments consistent with the present invention.

[0023] like Figure 1-6As shown, the utility model loess reinforcement combined performance test device comprises a base plate 1 and a controller 2, the controller 2 is fixedly provided on the upper left of the base plate 1, a fixing frame 3 is fixedly provided on the upper right of the base plate 1, a soil storage test assembly 4 is provided on the inner side of the bottom end of the fixing frame 3, a screw rod 6 is rotatably installed on the inner side of the top end of the fixing frame 3, a bracket 8 is fixedly provided on the top right side wall of the fixing frame 3, a servo motor 7 is fixedly installed on the upper end of the bracket 8, the output shaft of the servo motor 7 is fixedly connected to the right end of the screw rod 6, a compressive strength test assembly 9 is installed on the outer side of the screw rod 6, and a limiting strip 10 is fixedly connected to the middle position of the top inner wall of the fixing frame 3.

[0024] On the basis of the above structure, a guide groove 5 is provided at the bottom of the right end of the fixing frame 3. The guide groove 5 includes an inclined section and a vertical section at the rear end of the inclined section. The inclined section and the vertical section of the guide groove 5 are connected to each other.

[0025] In this embodiment, the provision of the guide groove 5 facilitates stable installation and convenient detachment between the soil storage test assembly 4 and the fixing frame 3.

[0026] On the basis of the above structure, the soil storage test assembly 4 includes a soil storage box 41, a vertical slot 42, a fixing rod 43, a first spring 44 and a handle 45. The soil storage box 41 is movably placed on the inner side of the bottom end of the fixing frame 3. A vertical slot 42 is provided on the outer wall of the middle part of the right end of the soil storage box 41. A fixing rod 43 is welded on the inner side of the vertical slot 42. The first spring 44 is sleeved on the outer side of the bottom end of the fixing rod 43. The handle 45 is slidably sleeved on the outer side of the top end of the fixing rod 43.

[0027] In this embodiment, the vertical slot 42 and the fixing rod 43 are provided to improve the stability of the handle 45 during the lifting and lowering adjustment process.

[0028] On the basis of the above structure, one end of the handle 45 is guided and slidably located in the vertical groove 42 , and the other end of the handle 45 is engaged with the fixing frame 3 through the guide groove 5 .

[0029] In this embodiment, the handle 45 is engaged with the fixing frame 3, so that the soil storage box 41 can be conveniently fixedly installed on the inner side of the bottom end of the fixing frame 3, so as to facilitate the loess reinforcement performance test.

[0030] On the basis of the above structure, the compressive strength test assembly 9 includes a movable frame 91, an electric telescopic rod 92, a mounting frame 93, a pressure roller 94, a pressure sensor 95, a sleeve 96 and a second spring 97. The movable frame 91 is threadedly sleeved on the outside of the screw rod 6, and the electric telescopic rod 92 is fixedly installed on both the front and rear ends of the movable frame 91. The pressure roller 94 is rotatably installed on the inner side of the mounting frame 93. The upper end of the mounting frame 93 is symmetrically fixed with a pressure sensor 95, and the outer side of the pressure sensor 95 is sleeved with a sleeve 96. The bottom end of the sleeve 96 is welded and fixed to the upper end surface of the mounting frame 93, and the top of the sleeve 96 is slidably sleeved on the outside of the telescopic end of the electric telescopic rod 92. A second spring 97 is fixedly connected between the telescopic end of the electric telescopic rod 92 and the top of the pressure sensor 95.

[0031] In this embodiment, the pressure roller 94 is controlled to move downward by the electric telescopic rod 92 to apply pressure to the soil, so that the compressive limit data of the reinforced loess can be obtained through the pressure sensor 95.

[0032] On the basis of the above structure, the longitudinal section of the movable frame 91 is a "convex" shaped structure, and a groove structure is provided at the middle position of the top of the movable frame 91. The top of the movable frame 91 is slidably connected with the limit strip 10 through the groove structure.

[0033] In this embodiment, the compressive strength test assembly 9 is controlled to slide in translation by rotating the screw rod 6, which facilitates sufficient pressure testing of the test soil and multi-point data collection. In addition, the setting of the limit strip 10 can improve the stability of the compressive strength test assembly 9 during the translation and sliding process.

[0034] The working principle of the utility model is as follows:

[0035] When in use, first place the soil storage box 41 filled with reinforced loess on the bottom plate 1 and push it toward the fixing frame 3, so that one end of the handle 45 enters the inclined section of the guide groove 5, and as the soil storage box 41 moves backward, the handle 45 is pressed and moves down along the fixing rod 43. When one end of the handle 45 moves to the vertical section of the guide groove 5, the first spring 44 can be used to lift the handle 45 to reset and stably engage with the fixing frame 3, thereby achieving stable installation of the soil storage box 41, facilitating the soil reinforcement performance test, and also facilitating the quick disassembly and replacement of the soil storage box 41, and facilitating the testing of various reinforced soil samples.

[0036] After the soil storage box 41 is installed stably, the two electric telescopic rods 92 located at the front and rear ends of the movable frame 91 can be started to control the mounting frame 93 to drive the pressure roller 94 to move vertically downward and apply pressure to the test soil. The pressure sensor 95 is set to facilitate the acquisition of pressure data and transmit it to the controller 2 for display, and observe the state stability of the soil under pressure, so as to obtain the compressive limit data of the reinforced loess. The servo motor 7 can also be used to control the rotation of the screw rod 6, and the movable frame 91 can be controlled to drive the pressure roller 94 to move horizontally and stably along the limit bar 10, so as to facilitate the full pressure detection of the test soil and conduct multi-point data collection, so as to facilitate the improvement of the data accuracy of the test experiment. The standard uniaxial compression test of the reinforced soil sample can be realized by using the stable vertical downward pressure roller 94, and the reinforcement-soil pressure data and the displacement data of the pressure roller 94 can also be helpful in analyzing the friction characteristics of the reinforcement-soil interface under load.

[0037] It should be noted that the controller 2 and the pressure sensor 95 are both existing products, and their internal structures and operating principles are mature existing technical means, which are directly cited in this application and will not be described in detail.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A loess reinforcement combined performance test device, comprising a base plate (1) and a controller (2), characterized in that: A controller (2) is fixedly provided on the upper left side of the base plate (1), a fixing frame (3) is fixedly provided on the upper right side of the base plate (1), a soil storage test assembly (4) is provided on the inner side of the bottom end of the fixing frame (3), a screw rod (6) is rotatably installed on the inner side of the top end of the fixing frame (3), a bracket (8) is fixedly provided on the right side wall of the top of the fixing frame (3), a servo motor (7) is fixedly provided on the upper end of the bracket (8), an output shaft of the servo motor (7) is fixedly connected to the right end of the screw rod (6), a compressive strength test assembly (9) is installed on the outer side of the screw rod (6), and a limit strip (10) is fixedly connected to the middle position of the top inner wall of the fixing frame (3); The soil storage test assembly (4) comprises a soil storage box (41), a vertical slot (42), a fixing rod (43), a first spring (44) and a handle (45); the soil storage box (41) is movably placed on the inner side of the bottom end of the fixing frame (3); a vertical slot (42) is provided on the outer wall of the middle part of the right end of the soil storage box (41); a fixing rod (43) is welded on the inner side of the vertical slot (42); a first spring (44) is sleeved on the outer side of the bottom end of the fixing rod (43); and a handle (45) is slidably sleeved on the outer side of the top end of the fixing rod (43); The compressive strength test assembly (9) comprises a movable frame (91), an electric telescopic rod (92), a mounting frame (93), a pressure roller (94), a pressure sensor (95), a sleeve (96) and a second spring (97). The movable frame (91) is threadedly sleeved on the outside of the screw rod (6). The electric telescopic rod (92) is fixedly mounted on both the front and rear ends of the movable frame (91). The pressure roller (94) is rotatably mounted on the inner side of the mounting frame (93). The pressure sensor (95) is symmetrically fixedly mounted on the front and rear ends of the upper end of the mounting frame (93). The outer side of the pressure sensor (95) is sleeved with a sleeve (96). The bottom end of the sleeve (96) is welded and fixed to the upper end surface of the mounting frame (93). The top of the sleeve (96) is slidably sleeved on the outer side of the telescopic end of the electric telescopic rod (92). The second spring (97) is fixedly connected between the telescopic end of the electric telescopic rod (92) and the top of the pressure sensor (95).

2. A loess reinforcement combined performance test device according to claim 1, characterized in that: A guide groove (5) is provided at the bottom of the right end of the fixing frame (3), the guide groove (5) comprising an inclined section and a vertical section located at the rear end of the inclined section, the inclined section and the vertical section of the guide groove (5) being connected to each other.

3. The loess reinforcement combined performance test device according to claim 1, characterized in that: One end of the handle (45) is guided and slidably located in the vertical groove (42), and the other end of the handle (45) is engaged with the fixing frame (3) through the guide groove (5).

4. The loess reinforcement combined performance test device according to claim 1, characterized in that: The longitudinal section of the movable frame (91) is in a "convex"-shaped structure, a groove structure is provided at the middle position of the top end of the movable frame (91), and the top of the movable frame (91) is slidably connected to the limit bar (10) through the groove structure.

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