Sensor triaxial testing machine

Abstract

The utility model belongs to geotechnical engineering detection technical field especially relates to a sensor triaxial detection loading testing machine, including testing machine body, the testing machine body includes the frame body, the upper side of fixed base is provided with pressure chamber, the pressure chamber includes base, the upper side of base is provided with glass cover test bin, the lower side of the upper side of test bin is provided with underwater load sensor, the outside of underwater load sensor is provided with upper stabilizer, the upper side of base is provided with sample holder, the outside of sample holder is provided with lower stabilizer, the lower side of upper stabilizer and the upper side of lower stabilizer place have sample product. The utility model design is reasonable, simple structure, processing is convenient and can realize the stable placement of the position of sample, prevent its occurrence from deviating, also, the fastening of the position of the upper side of sample and detection equipment connection is carried out, prevents the damage of test, ensures the smooth progress of detection work, satisfies the use demand.

Description

Technical Field

[0001] This utility model belongs to the field of geotechnical engineering testing technology, and in particular relates to a sensor triaxial testing loading test machine. Background Technology

[0002] In recent years, with the rapid development of engineering construction in my country, especially in the field of geotechnical engineering, research on complex engineering geological conditions such as ultra-high slope support, deep foundation pit excavation, and geological hazard research has become increasingly in-depth, leading to higher requirements for laboratory geotechnical testing. Soil is a very complex natural material and is often in a triaxial stress state. In many cases, experiments under simple stress states cannot fully reflect the stress state of soil in actual engineering. Therefore, conducting laboratory triaxial geotechnical tests is crucial for fully understanding the mechanical properties of soil under complex stress states.

[0003] During testing, the soil sample is placed in the pressure chamber of a triaxial testing machine. After water is injected, the confining pressure and counterpressure in the pressure chamber are adjusted by a pressure volume controller. The axial loading device is generally provided with axial force by a stepper motor. The axial force is applied to the sample through the upper pressure bar of the specimen to complete the test. In the existing technology, when the soil sample is placed in a latex film, and then the sample is compacted by a compactor before being placed on the sample holder, filter stones are added on both sides of the sample. However, the sample, filter stones and sample holder are either placed directly on them or fastened with rubber bands. Both methods are not good for the stability of the sample and filter stones and are relatively inconvenient to operate. Using rubber bands can also easily damage the sample and affect the subsequent test results, which cannot meet the usage requirements. Utility Model Content

[0004] This invention addresses the technical problems existing in the sample placement process mentioned above by proposing a sensor triaxial detection loading test machine that is reasonably designed, simple in structure, easy to process, and can achieve stable placement of the sample to prevent it from shifting. At the same time, it also secures the connection between the sample and the testing equipment to prevent damage during the test, ensuring the smooth progress of the testing work and meeting the usage requirements.

[0005] To achieve the above objectives, the present invention employs a triaxial sensor loading test machine, comprising a test machine body, the test machine body including a frame, an upper test head disposed above the frame, a mounting base disposed below the upper test head, a displacement sensor disposed on one side of the mounting base, a fixed base disposed above the lower side of the frame, a lower test head disposed below the fixed base, a pressure chamber disposed above the fixed base, the pressure chamber including a base, a glass-covered test chamber disposed above the base, an underwater load sensor disposed above and below the test chamber, an upper stabilizer disposed outside the underwater load sensor, a sample holder disposed above the base, a lower stabilizer disposed outside the sample holder, and a sample placed between the lower part of the upper stabilizer and the upper part of the lower stabilizer.

[0006] Preferably, the upper stabilizer includes a connecting sleeve fitted over the outer side of the underwater load sensor. A connecting hose is provided on the outer side of the connecting sleeve. A connecting plate is provided on the lower side of one side of the connecting sleeve. A clamping plate with an Ω-shaped design and telescopic performance is provided on one side of the connecting plate. A limiting slide is provided on one side of the connecting sleeve. A locking plate with a trapezoidal design that is adjustable in height is provided on the limiting slide and is adapted to and engaged with both ends of the clamping plate. A limiting plate is provided on the lower side of the clamping sleeve to limit the descent position of the locking plate.

[0007] Preferably, the sample holder is designed in an inverted T-shape, and the lower stabilizer includes a ring frame that can be adjusted in height relative to the sample holder. The ring frame is provided with an arc-shaped abutment plate with telescopic properties. A receiving groove is provided on the outer side of the sample holder corresponding to the abutment plate. A limiting seat is provided on the inner side of the ring frame between two adjacent abutment plates, and a limiting rod with a T-shape is provided in the limiting seat.

[0008] Preferably, the test sample includes a latex membrane, in which a soil sample is placed, and filter stones are placed on both the upper and lower sides of the soil sample.

[0009] Compared with the prior art, the advantages and positive effects of this utility model are as follows: This utility model provides a triaxial loading test machine for sensors. An upper stabilizer securely connects the top of the sample to the testing equipment, ensuring smooth vertical loading tests and preventing sample displacement. A lower stabilizer securely connects the bottom of the sample to the sample holder, ensuring sample stability on the testing equipment and preventing displacement or detachment. This stability reduces the possibility of soil sample damage and meets usage requirements. The device is rationally designed, simple in structure, and easy to manufacture. It ensures stable placement of the sample, preventing displacement, and also secures the connection between the sample and the testing equipment to prevent damage during testing, ensuring smooth testing and meeting usage requirements. Attached Figure Description

[0010] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the structure of a triaxial sensor loading test machine; Figure 2 This is a front view of the structure of the sensor triaxial detection loading test machine; Figure 3 This is a front view of the pressure chamber structure; Figure 4 A partial front view of the internal structure of the pressure chamber (in use); Figure 5 This is an enlarged schematic diagram of part of the internal structure of the lower stabilizer; Figure 6 This is a schematic diagram of the upper stabilizer. Figure 7 This is an exploded view of the upper stabilizer structure. Figure 8 This is a top view of the upper stabilizer structure; In the above figures, 1. Frame; 2. Upper test head; 3. Mounting base; 4. Displacement sensor; 5. Fixed base; 6. Pressure chamber; 61. Base; 62. Glass-covered test chamber; 63. Underwater load sensor; 7. Upper stabilizer; 71. Connecting sleeve; 72. Connecting hose; 73. Connecting plate; 74. Clamping plate; 75. Limiting slide bar; 76. Locking plate; 77. Limiting plate; 8. Lower stabilizer; 81. Ring frame; 82. Abutment plate; 83. Limiting seat; 84. Limiting rod; 9. Sample holder; 91. Receiving groove; 10. Sample; 101. Latex membrane; 102. Soil sample; 103. Filter stone. Detailed Implementation

[0012] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0013] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0014] Examples, such as Figures 1-8As shown, a triaxial loading test machine for sensors includes a test machine body, which includes a frame 1. An upper test head 2 is positioned above the frame 1, and a mounting base 3 is positioned below the upper test head 2. A displacement sensor 4 is positioned on one side of the mounting base 3. A fixed base 615 is positioned above the lower side of the frame 1, and a lower test head (not shown in the figure) is positioned below the fixed base 615. A pressure chamber 6 is positioned above the fixed base 615. The above-mentioned device components are all conventionally installed in existing triaxial test machines. The specific installation methods, working principles, and operating methods are known to those skilled in the art and will not be elaborated further. This embodiment aims to solve the problem of the stability of the placement position of the test sample 10. Specifically, the pressure chamber 6 includes a base 61, which is placed on the fixed base 615 to ensure the testing of the vertical force below. Multiple valve pipes are also installed outside the base 61, which is a mature existing technology. The specific number and position of these valves will not be elaborated further. A glass cover test chamber is positioned above the base 61. Chamber 62, also employing conventional technology, features an underwater load sensor 63 mounted on its upper and lower sides to detect and transmit vertical forces. An upper stabilizer 7 is located on the outer side of the underwater load sensor 63, ensuring a stable connection between the upper part of the sample 10 and the testing equipment, guaranteeing the smooth conduct of the vertical loading test and preventing the sample 10 from shifting. A sample holder 9 is mounted on top of the base 61 to support the test sample, ensuring smooth subsequent testing. A lower stabilizer 7 is located on the outer side of the sample holder 9. The stabilizer 8 is stably connected to the sample holder 9 below the sample 10 to ensure the stability of the sample 10 on the test equipment, prevent it from shifting or falling off, ensure its stability, and reduce the possibility of damage to the soil sample 102 to a certain extent, thus meeting the usage requirements. The sample 10 is placed between the lower part of the upper stabilizer 7 and the upper part of the lower stabilizer 8. The soil sample 102 to be tested is placed in the sample 10. It is pre-compacted by the compactor to form a soil sample 102 column to meet different test and detection work. In the above process: the upper stabilizer 7 is used to stably connect the upper part of the test sample 10 to the testing equipment, ensuring the smooth progress of the vertical loading test and preventing the test sample 10 from shifting. The lower stabilizer 8 is used to stably connect the lower part of the test sample 10 to the sample holder 9, ensuring the stability of the test sample 10 on the testing equipment, preventing it from shifting or falling off, ensuring its stability, and reducing the possibility of damage to the soil sample 102 to a certain extent, thus meeting the usage requirements. This device is reasonably designed, simple in structure, easy to process, and can achieve stable placement of the sample, preventing it from shifting. At the same time, it also secures the connection between the upper part of the sample and the testing equipment to prevent damage during the test, ensuring the smooth progress of the testing work and meeting the usage requirements.

[0015] To ensure the stability of the position of the sample 10 and its stable connection with the testing equipment, the upper stabilizer 7 includes a connecting sleeve 71 sleeved on the outside of the underwater load sensor 63. A connecting hose 72 is provided on the outside of the connecting sleeve 71, which is connected to a valve in the base 61. A connecting plate 73 is provided on the lower side of one side of the connecting sleeve 71. A clamping plate 74 with an Ω-shaped design and telescopic performance is provided on one side of the connecting plate 73. A limit slide 75 is provided on one side of the connecting sleeve 71. A locking plate 76 with an adjustable, trapezoidal design is provided on the limit slide 75, and it is adapted to and engaged with both ends of the clamping plate 74. A limit plate 77 is provided on the lower outside of the clamping sleeve to limit the descent position of the locking plate 76. Specifically, the underwater load sensor 63 can be connected to the connecting sleeve 71 by bolts, and the connecting sleeve 71 extends beyond the lower part of the underwater load sensor 63. The filter stone 103 is placed inside the latex sleeve above the soil sample 102. Then, the stabilizer 7 is removed, ensuring that the lower part of the underwater load sensor 63 is in contact with the upper part of the filter stone 103. Next, one end of the clamping plate 74 is pinched, causing the inner circumference of the clamping plate 74 to fit against the outer side of the latex sleeve corresponding to the filter stone 103. Then, the locking plate 76 is moved downwards, ensuring that the inner side of the locking plate 76 engages with the end of the clamping plate, thus locking it in place. The locking plate 76 continues to move downwards until it abuts against the limiting plate 77, completing the clamping of the upper stabilizer 7. It should be further noted that the end faces of the clamping plate 74 and the locking plate 76 after descending to the lowest point correspond to the lower part of the filter stone 103, preventing them from obstructing the upper part of the sample in the latex sleeve and ensuring the smooth progress of subsequent testing. This design can stably connect the upper part of the sample 10 to the testing equipment, ensuring the smooth progress of subsequent testing.

[0016] To facilitate the fastening of the test sample 10 and the sample holder 9, the sample holder 9 is designed in an inverted T-shape. The lower stabilizer 8 includes a ring frame 81 that can be adjusted in height relative to the sample holder 9. An arc-shaped, telescopic abutment plate 82 is provided inside the ring frame 81. A receiving groove 91 is provided on the outer side of the sample holder 9 corresponding to the abutment plate 82. A limiting seat 83 is provided on the inner side of the ring frame 81 between two adjacent abutment plates 82. A T-shaped limiting rod 84 is provided inside the limiting seat 83. Specifically, when the abutment plate 82 is positioned in the receiving groove 91 on the sample holder 9, it is stationary and does not tend to expand or contract. Then, when the filter stone 103 and the latex membrane 101 are placed on the sample holder 9, the ring frame 81 is moved upwards. During this process, the abutment plate 82 moves from... The position of the receiving groove 91 moves upward along with the sample holder 9. Considering that the size of the filter stone 103 is the same as the outer circumference of the sample holder 9, the clamping plate 82 will be opened by the filter stone 103 as it rises, making it tend to expand outward. This allows the clamping plate 82 to be fastened to the outside of the filter stone 103. At the same time, it will also press against the latex film 101 sleeved on the outside of the filter stone 103, completing the limiting and fastening of the connection between the components. Due to the influence of the clamping plates 82 being pressed by the filter stone 103, it will limit and press the lower outer side of the sample 10 in the horizontal direction. Moreover, the limiting rod 84 can limit the movement direction of the ring frame 81 on the one hand, and on the other hand, it can make it form a whole with the sample holder 9 to ensure the stability of its setting position and meet the usage requirements.

[0017] To ensure the smooth implementation of the test, the test sample 10 includes a latex membrane 101, inside which a soil sample 102 is placed. Filter stones 103 are placed on both the upper and lower sides of the soil sample 102. Specifically, the soil sample 102 is first compacted within the latex membrane 101 using a compactor to form a soil sample column. Then, one filter stone 103 is placed on the test sample holder 9, and the soil sample 102 and latex membrane 101 are placed on top of it, with the lower latex membrane 101 fitting over the lower filter stone 103. The lower stabilizer 8 is then used to clamp the lower filter stone 103. Another filter stone 103 is then placed above the soil sample 102 and inside the latex membrane 101. Finally, the upper stabilizer 7 is used to clamp the connection between the upper filter stone 103 and the soil sample 102, ensuring the stability of the test sample 10's position and facilitating subsequent testing, thus meeting the usage requirements.

[0018] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A triaxial detection loading testing machine for sensors, comprising a testing machine body, the testing machine body including a frame, an upper testing head disposed above the frame, a mounting base disposed below the upper testing head, a displacement sensor disposed on one side of the mounting base, a fixed base disposed above the lower side of the frame, a lower testing head disposed below the fixed base, and a pressure chamber disposed above the fixed base, characterized in that, The pressure chamber includes a base, a glass-covered test chamber is arranged above the base, an underwater load sensor is arranged on the lower side of the test chamber, an upper stabilizer is arranged on the outside of the underwater load sensor, a sample holder is arranged above the base, a lower stabilizer is arranged on the outside of the sample holder, and a test sample is placed between the lower part of the upper stabilizer and the upper part of the lower stabilizer.

2. The sensor triaxial detection loading test machine according to claim 1, characterized in that, The upper stabilizer includes a connecting sleeve fitted around the outside of the underwater load sensor. A connecting hose is provided on the outside of the connecting sleeve. A connecting plate is provided on the lower side of one side of the connecting sleeve. A clamping plate with an Ω-shaped design and telescopic performance is provided on one side of the connecting plate. A limit slide is provided on one side of the connecting sleeve. A locking plate with a trapezoidal design that is adjustable in height is provided on the limit slide and is adapted to and engaged with both ends of the clamping plate. A limit plate is provided on the lower side of the clamping sleeve to limit the descent position of the locking plate.

3. The sensor triaxial detection loading test machine according to claim 2, characterized in that, The sample holder is designed in an inverted T-shape. The lower stabilizer includes a ring frame that can be adjusted in height relative to the sample holder. An arc-shaped abutment plate with telescopic properties is provided inside the ring frame. A receiving groove is provided on the outer side of the sample holder corresponding to the abutment plate. A limiting seat is provided on the inner side of the ring frame between two adjacent abutment plates. A limiting rod with a T-shape is provided inside the limiting seat.

4. The sensor triaxial detection loading test machine according to claim 3, characterized in that, The test sample includes a latex membrane, inside which a soil sample is placed, and filter stones are placed on both the top and bottom sides of the soil sample.

Images