Portable ultrasonic consolidation detector for experiment

Abstract

The utility model discloses a portable ultrasonic consolidation detector for experiments, which belongs to the technical field of soil body detection and comprises a base shell and a counter-force gantry. The base shell is provided with a pressure supply device for providing pressure for an experiment; a pressure-bearing excitation transducer and a pressure-bearing receiving transducer are mounted on the pressure supply device; the upper part of the pressure-bearing receiving transducer is detachably connected with a water-permeable cutting ring for placing a sample; the water-permeable cutting ring is composed of a steel ring and a water-permeable ring arranged on the inner side wall of the steel ring; the exterior of the base shell is connected with a data acquisition and analysis system for acquiring and analyzing data; two sets of fixing mechanisms used for supporting the fixing devices are installed on the outer side wall of the base shell. According to the mode, the small consolidometer can be directly fixed in a vehicle and carried to a sampling site for testing, so that the disturbance of a sampling sample in the transfer process is effectively avoided, and the testing precision is further improved.

Description

Technical Field

[0001] This utility model relates to the field of soil testing technology, specifically to a portable ultrasonic consolidation testing instrument for laboratory use. Background Technology

[0002] Ultrasonic testing technology has the advantages of being fast, non-destructive, and capable of continuous testing, and has been widely used in geotechnical engineering and various indoor experimental studies. Consolidation testing is a fundamental test item in geotechnical experiments for engineering geological exploration, which can determine soil compressibility coefficient, compression index, rebound index, consolidation index, preconsolidation pressure, and other indicators.

[0003] Chinese patent CN212321258U discloses a consolidation apparatus, including an apparatus body and an apparatus table. The apparatus body is fixedly connected to the upper surface of the apparatus table. The apparatus body has a lever, and a connecting rod is vertically attached to the end of the lever away from the apparatus body. A weight pan is fixedly connected to the lower end of the connecting rod. Two slide rails are fixedly connected to the lower surface of the apparatus table. The two slide rails are parallel to each other, and two metal blocks are slidably connected to each slide rail in a horizontal direction. The apparatus table has two supports, each including two support rods. The two metal blocks are respectively hinged to one end of the two support rods. A universal brake wheel is hinged to the end of the support rod away from the apparatus table. The two support rods are cross-hinged at their center positions. The apparatus table has a driving assembly for driving the two metal blocks closer to or further away from each other. This device allows for easy adjustment of the apparatus table height to suit the height of the experimenter; however, the following problems still exist:

[0004] 1. Consolidation experiments require the use of a consolidation apparatus in the laboratory to conduct experiments on the samples. However, during the transportation of the samples to the laboratory, the soil structure is easily damaged by factors such as transportation disturbance, which in turn affects the test results.

[0005] 2. According to the specifications, the consolidation test requires multiple loading stages, with each stage lasting 24 hours or until the deformation changes by no more than 0.01m per hour. This results in a long test time and low efficiency.

[0006] Based on this, this utility model designs a portable ultrasonic consolidation testing instrument for experiments to solve the above problems. Utility Model Content

[0007] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a portable ultrasonic consolidation tester for experiments.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A portable ultrasonic consolidation detector for laboratory use includes a base housing and a reaction gantry.

[0010] The lower end of the reaction gantry is fixedly connected to the inner bottom surface of the base shell;

[0011] The base housing is equipped with a pressure supply device to provide pressure for the experiment.

[0012] The pressure supply device is equipped with a pressure-bearing excitation transducer that converts electrical energy into acoustic energy and a pressure-bearing receiving transducer that converts acoustic energy into electrical energy; the pressure-bearing receiving transducer is located below the pressure-bearing excitation transducer.

[0013] A water-permeable ring cutter for placing a sample is detachably connected above the pressure-bearing receiving transducer; the water-permeable ring cutter consists of a steel ring and a water-permeable ring disposed on the inner side wall of the steel ring;

[0014] The base housing is externally connected to a data acquisition and analysis system for collecting and analyzing data;

[0015] Two sets of fixing mechanisms for supporting the fixing device are installed on the outer side wall of the base shell; one set of fixing mechanisms is connected to the outer front end of the base shell, and the other set of fixing mechanisms is connected to the outer right end of the base shell.

[0016] The fixing mechanism includes a fixing rod, a limiting component, and a supporting component. The upper end of the fixing rod is fixedly connected to the outer wall of the base shell. Both the fixing rod and the limiting component are connected to the fixing rod. Two sets of supporting components are provided on both sides of the limiting component. The supporting component is used to support and fix the entire device. The limiting component and the fixing rod cooperate to lock the supporting component.

[0017] Furthermore, the permeable ring is made by cutting permeable stone.

[0018] Furthermore, both the pressure-bearing excitation transducer and the pressure-bearing receiving transducer can withstand pressures ranging from 5 to 300 MPa.

[0019] Furthermore, the limiting component includes a slider and a positioning pin; the slider is slidably connected to the fixed rod, and the slider is slidably connected to the limiting groove opened on the base shell; the fixed rod is slidably connected to a plurality of positioning pins arranged at equal intervals above and below by a spring; the slider is provided with positioning holes that cooperate with the positioning pins for positioning; the slider is connected to the support component.

[0020] Furthermore, the support assembly includes connecting rod 1, connecting rod 2, connecting rod 3, connecting rod 4, connecting rod 5, connecting rod 6, and an abutment plate; one end of connecting rod 1 is hinged to the slider, and the other end of connecting rod 1 is hinged to the middle position of connecting rod 5; one end of connecting rod 2 is hinged to the upper end of the fixed rod, and the other end of connecting rod 2 is hinged to the middle position of connecting rod 1; one end of connecting rod 3 is hinged to the middle position of connecting rod 2, and the other end of connecting rod 3 is hinged to connecting rod 5; one end of connecting rod 4 is hinged to the middle position of connecting rod 1, and the other end of connecting rod 4 is hinged to connecting rod 6; the end of connecting rod 5 that is not connected to connecting rod 3 is hinged to the middle position of connecting rod 6; and the end of connecting rod 6 that is not hinged to connecting rod 4 is hinged to the abutment plate.

[0021] Furthermore, the data acquisition and analysis system includes a data acquisition and analysis instrument and a data cable, with the data acquisition and analysis instrument connected to the pressure supply device via the data cable.

[0022] Furthermore, the pressure supply device includes an adjusting screw, a displacement sensing device, a pressure sensor, an electric cylinder, a servo motor, and a reducer. The displacement sensing device is fixedly connected to the lower end of the pressure-bearing receiving transducer. The lower end of the adjusting screw abuts against the end of the pressure-bearing excitation transducer furthest from the sample. The adjusting screw is threadedly connected to the reaction force gantry through a threaded hole. The lower end of the displacement sensing device is fixedly connected to the pressure sensor. The output end of the electric cylinder is fixedly connected to the pressure sensor. The lower end of the electric cylinder is fixedly connected to the output end of the reducer. The drive end of the servo motor is fixedly connected to the input end of the reducer. The reducer is fixedly connected to the side wall of the base housing. The servo motor is fixedly connected to the inner bottom of the base housing. The data acquisition and analysis instrument is connected to the displacement sensing device via a data cable.

[0023] Furthermore, the pressure-bearing excitation transducer, pressure-bearing receiving transducer, sample, adjusting screw, displacement sensing device, pressure sensor, electric cylinder, servo motor and reducer are all on the same axis.

[0024] Compared with the prior art, the advantages of this utility model are as follows: 1. Simple structure, convenient to use, and can be tested directly at the sampling site with higher test accuracy: Through miniaturized design, a servo motor and reducer are used to drive the control cylinder to complete the consolidation test of the sample. At the same time, the displacement sensing device, pressure sensor, pressure excitation transducer, and pressure receiving transducer are used to collect test data, making it convenient to use and operate. Moreover, the miniaturized consolidation instrument can be directly fixed in a vehicle and carried to the sampling site for testing, effectively avoiding disturbance of the sample during the transfer process and further improving the test accuracy.

[0025] 2. Wide detection range and high accuracy: By combining ultrasonic testing with a consolidation apparatus, ultrasonic detection can be achieved throughout the entire consolidation test process, further analyzing the structural changes of the specimen during the consolidation test, expanding the test detection range and effectively improving the test accuracy. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of a portable ultrasonic consolidation testing instrument for laboratory use according to the present invention;

[0028] Figure 2 This is a perspective view of the permeable ring cutter of this utility model;

[0029] Figure 3 This is a left view of a portable ultrasonic consolidation testing instrument for experimental use according to this utility model;

[0030] Figure 4 The three-dimensional fixing mechanism of this utility model Figure 1 ;

[0031] Figure 5 The three-dimensional fixing mechanism of this utility model Figure 2 ;

[0032] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0033] The labels in the diagram represent:

[0034] 1. Pressure-bearing excitation transducer; 2. Pressure-bearing receiving transducer; 3. Pressure supply device; 31. Threaded hole; 32. Adjusting screw; 34. Displacement sensing device; 35. Pressure sensor; 36. Electric cylinder; 37. Servo motor; 38. Reducer; 4. Sample; 5. Water-permeable ring cutter; 51. Steel ring; 52. Water-permeable ring; 6. Data acquisition and analysis system; 61. Data acquisition and analysis instrument; 62. Data cable; 7. Base shell; 8. Reaction gantry; 9. Fixing mechanism; 91. Fixing rod; 92. Limiting component; 921. Slider; 922. Positioning pin; 923. Positioning hole; 93. Support component; 931. Connecting rod one; 932. Connecting rod two; 933. Connecting rod three; 934. Connecting rod four; 935. Connecting rod five; 936. Connecting rod six; 937. Abutment plate. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0036] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0037] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-6 A portable ultrasonic consolidation testing instrument for experimental use, comprising a base housing 7 and a reaction gantry 8;

[0038] The lower end of the reaction gantry 8 is fixedly connected to the inner bottom surface of the base housing 7;

[0039] A pressure supply device 3 for providing pressure for the experiment is installed on the base housing 7;

[0040] The pressure supply device 3 is equipped with a pressure-bearing excitation transducer 1 that converts electrical energy into acoustic energy and a pressure-bearing receiving transducer 2 that converts acoustic energy into electrical energy; the pressure-bearing receiving transducer 2 is located below the pressure-bearing excitation transducer 1.

[0041] The pressure-bearing receiving transducer 2 is detachably connected to a water-permeable ring cutter 5 for placing the sample 4; the water-permeable ring cutter 5 consists of a steel ring 51 and a water-permeable ring 52 disposed on the inner side wall of the steel ring 51, and the water-permeable ring 52 is cut from water-permeable stone.

[0042] The base housing 7 is externally connected to a data acquisition and analysis system 6 for collecting and analyzing data, including a data acquisition and analysis instrument 61 and a data cable 62. The data cable 62 is connected to the pressure supply device 3 through the data acquisition and analysis instrument 61.

[0043] Two sets of fixing mechanisms 9 for supporting the fixing device are installed on the outer side wall of the base housing 7; one set of fixing mechanisms 9 is connected to the outer front end of the base housing 7, and the other set of fixing mechanisms 9 is connected to the outer right end of the base housing 7.

[0044] The fixing mechanism 9 includes a fixing rod 91, a limiting component 92, and a support component 93. The upper end of the fixing rod 91 is fixedly connected to the outer wall of the base housing 7. Both the fixing rod 91 and the limiting component 92 are connected to the fixing rod 91. Two sets of support components 93 are provided on both sides of the limiting component 92. The support components 93 are used to support and fix the entire device. The limiting component 92 and the fixing rod 91 cooperate to lock the support components 93.

[0045] In this invention, the operator can fix the device inside the trunk of a car by sliding the support assembly 93. Upon arrival at the location, the operator places the selected sample 4 into the permeable ring 5 inside the trunk, then places the permeable ring 5 above the pressure receiving transducer 2, and then installs the pressure excitation transducer 1 above the permeable ring 5. At this time, the pressure supply device 3 provides pressure to the experiment, and the data acquisition and analysis system 6 receives and analyzes the data. This effectively avoids disturbance to the sample 4 during the transfer process, further improving the test accuracy.

[0046] The limiting component 92 includes a slider 921 and a positioning pin 922; the slider 921 is slidably connected to the fixed rod 91, and the slider 921 is slidably connected to the limiting groove opened on the base housing 7; the fixed rod 91 is slidably connected to a plurality of positioning pins 922 arranged at equal intervals above and below by a spring; the slider 921 is provided with a positioning hole 923 that cooperates with the positioning pin 922 for positioning; the slider 921 is connected to the support component 93;

[0047] The support assembly 93 includes connecting rod 931, connecting rod 932, connecting rod 933, connecting rod 934, connecting rod 935, connecting rod 936, and abutment plate 937; one end of connecting rod 931 is hinged to slider 921, and the other end of connecting rod 931 is hinged to the middle position of connecting rod 935; one end of connecting rod 932 is hinged to the upper end of fixed rod 91, and the other end of connecting rod 932 is hinged to the middle position of connecting rod 931. One end of rod 3 933 is hinged to the middle position of connecting rod 2 932, and the other end of connecting rod 3 933 is hinged to connecting rod 5 935. One end of connecting rod 4 934 is hinged to the middle position of connecting rod 1 931, and the other end of connecting rod 4 934 is hinged to connecting rod 6 936. The end of connecting rod 5 935 that is not connected to connecting rod 3 933 is hinged to the middle position of connecting rod 6 936. The end of connecting rod 6 936 that is not hinged to connecting rod 4 934 is hinged to abutment plate 937.

[0048] In this utility model, the operator slides the slider 921 upward along the fixed rod 91. At this time, one end of the connecting rod 931, which is hinged to the slider 921, slides upward, while the other end rotates around the end of the connecting rod 931 that is hinged to the slider 921. One end of the connecting rod 932, which is hinged to the connecting rod 931, rotates around the other end of the connecting rod 932. The hinge angle between the connecting rods 933 and 935 and between the connecting rods 931 and 932 increases. The parallelogram formed by the connecting rods 931, 932, 933, and 935, and the parallelogram formed by the connecting rods 931, 934, 935, and 936, are connected to the parallelogram formed by the connecting rods 931, 934, 935, and 936. The parallelogram formed by 6 becomes flatter, allowing the abutment plate 937 to be sent further out. When the two abutment plates 937 on the same set of fixing mechanisms 9 simultaneously abut against the two sides of the trunk, the slider 921 is slid to the nearest position. The positioning pin 922 passes through the positioning hole 923 and is fixed in place. The two sets of fixing mechanisms 9 work together to simultaneously abut against the four sides of the trunk to position the device, making it easy to fix the device and take it to the site, avoiding disturbance of the sample 4 during the transfer process. Compared with telescopic rod support, it saves more space, and the double-sided extension support can place the device in the middle of the trunk where the storage height is the largest, making it more convenient to place the device.

[0049] The pressure supply device 3 includes an adjusting screw 32, a displacement sensing device 34, a pressure sensor 35, an electric cylinder 36, a servo motor 37, and a reducer 38. The displacement sensing device 34 is fixedly connected to the lower end of the pressure receiving transducer 2. The lower end of the adjusting screw 32 abuts against the end of the pressure excitation transducer 1 away from the sample 4. The adjusting screw 32 is threadedly connected to the reaction force gantry 8 through a threaded hole 31. The lower end of the displacement sensing device 34 is fixedly connected to the pressure sensor 35. The output end of the electric cylinder 36 is fixedly connected to the pressure sensor 35. The lower end of the electric cylinder 36 is fixedly connected to the output end of the reducer 38. The drive end of the servo motor 37 is fixedly connected to the input end of the reducer 38. The reducer 38 is fixedly connected to the side wall of the base housing 7. The servo motor 37 is fixedly connected to the inner bottom of the base housing 7. The data acquisition and analysis instrument 61 is connected to the displacement sensing device 34 through a data cable 62.

[0050] In this invention, the operator places the sample 4 into the steel ring 51, then fixes the permeable ring cutter 5 above the pressure receiving transducer 2, and places the pressure excitation transducer 1 above the permeable ring cutter 5. The operator then turns the adjusting screw 32 downwards to press against the permeable ring cutter 5, and then starts the servo motor 37. The servo motor 37 drives the electric cylinder 36 through the reducer 38, and the electric cylinder 36 presses upwards against the sample 4 to increase pressure. The pressure sensor 35 and the displacement sensing device 34 are used to record data and transmit it to the data acquisition and analysis instrument 61. The data acquisition and analysis instrument 61 is used to analyze the experimental data. By combining ultrasonic detection with the consolidation apparatus, ultrasonic detection can be achieved throughout the entire consolidation test process, further analyzing the structural changes of the specimen during the consolidation test, expanding the test detection range, and effectively improving the test accuracy.

[0051] The pressure-bearing excitation transducer 1, pressure-bearing receiving transducer 2, sample 4, adjusting screw 32, displacement sensing device 34, pressure sensor 35, electric cylinder 36, servo motor 37, and reducer 38 are all on the same axis.

[0052] The pressure-bearing excitation transducer 1 and the pressure-bearing receiving transducer 2 are both within the pressure range of 5 to 300 MPa.

[0053] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A portable ultrasonic consolidation testing instrument for experiments, comprising a base shell (7) and a reaction gantry (8), characterized in that: It also includes a pressure-bearing excitation transducer (1), a pressure-bearing receiving transducer (2), a pressure supply device (3), a water-permeable ring cutter (5), and a data acquisition and analysis system (6); The lower end of the reaction gantry (8) is fixedly connected to the inner bottom surface of the base shell (7); A pressure supply device (3) for providing pressure for the experiment is installed on the base housing (7); The pressure supply device (3) is equipped with a pressure-bearing excitation transducer (1) that converts electrical energy into acoustic energy and a pressure-bearing receiving transducer (2) that converts acoustic energy into electrical energy; the pressure-bearing receiving transducer (2) is located below the pressure-bearing excitation transducer (1); The pressure-bearing receiving transducer (2) is detachably connected to a water-permeable ring cutter (5) for placing a sample (4); the water-permeable ring cutter (5) is composed of a steel ring (51) and a water-permeable ring (52) set on the inner side wall of the steel ring (51); The base housing (7) is externally connected to a data acquisition and analysis system (6) for collecting and analyzing data; Two sets of fixing mechanisms (9) for supporting the fixing device are installed on the outer side wall of the base shell (7); one set of fixing mechanisms (9) is connected to the outer front end of the base shell (7), and the other set of fixing mechanisms (9) is connected to the outer right end of the base shell (7). The fixing mechanism (9) includes a fixing rod (91), a limiting component (92), and a supporting component (93). The upper end of the fixing rod (91) is fixedly connected to the outer wall of the base shell (7). The fixing rod (91) and the limiting component (92) are both connected to the fixing rod (91). Two sets of supporting components (93) are provided on both sides of the limiting component (92). The supporting component (93) is used to support and fix the entire device. The limiting component (92) and the fixing rod (91) cooperate to lock the supporting component (93).

2. The portable ultrasonic consolidation testing instrument for experiments according to claim 1, characterized in that, The permeable ring (52) is made by cutting permeable stone.

3. The portable ultrasonic consolidation testing instrument for experiments according to claim 1, characterized in that, The pressure-bearing excitation transducer (1) and the pressure-bearing receiving transducer (2) can withstand pressures ranging from 5 to 300 MPa.

4. The portable ultrasonic consolidation testing instrument for experiments according to claim 1, characterized in that, The limiting component (92) includes a slider (921) and a positioning pin (922); the slider (921) is slidably connected to the fixed rod (91), and the slider (921) is slidably connected to the limiting groove opened on the base shell (7); the fixed rod (91) is slidably connected to a plurality of positioning pins (922) arranged at equal intervals above and below by a spring; the slider (921) is provided with a positioning hole (923) that cooperates with the positioning pin (922) for positioning; the slider (921) is connected to the support component (93).

5. The portable ultrasonic consolidation testing instrument for experiments according to claim 4, characterized in that, The support assembly (93) includes connecting rod 1 (931), connecting rod 2 (932), connecting rod 3 (933), connecting rod 4 (934), connecting rod 5 (935), connecting rod 6 (936), and abutment plate (937); one end of connecting rod 1 (931) is hinged to the slider (921), and the other end of connecting rod 1 (931) is hinged to the middle position of connecting rod 5 (935); one end of connecting rod 2 (932) is hinged to the upper end of the fixed rod (91), and the other end of connecting rod 2 (932) is hinged to the middle position of connecting rod 1 (931). One end of link three (933) is hinged to the middle position of link two (932), and the other end of link three (933) is hinged to link five (935). One end of link four (934) is hinged to the middle position of link one (931), and the other end of link four (934) is hinged to link six (936). The end of link five (935) that is not connected to link three (933) is hinged to the middle position of link six (936), and the end of link six (936) that is not hinged to link four (934) is hinged to the abutment plate (937).

6. The portable ultrasonic consolidation testing instrument for experiments according to claim 1, characterized in that, The data acquisition and analysis system (6) includes a data acquisition and analysis instrument (61) and a data cable (62). The data acquisition and analysis instrument (61) is connected to the pressure supply device (3) via the data cable (62).

7. The portable ultrasonic consolidation testing instrument for experiments according to claim 6, characterized in that, The pressure supply device (3) includes an adjusting screw (32), a displacement sensing device (34), a pressure sensor (35), an electric cylinder (36), a servo motor (37), and a reducer (38). The displacement sensing device (34) is fixedly connected to the lower end of the pressure receiving transducer (2). The lower end of the adjusting screw (32) abuts against the end of the pressure excitation transducer (1) away from the sample (4). The adjusting screw (32) is threadedly connected to the reaction gantry (8) through a threaded hole (31). The lower end of the displacement sensing device (34) The output end of the electric cylinder (36) is fixedly connected to the pressure sensor (35), the lower end of the electric cylinder (36) is fixedly connected to the output end of the reducer (38), the drive end of the servo motor (37) is fixedly connected to the input end of the reducer (38), the reducer (38) is fixedly connected to the side wall of the base shell (7), the servo motor (37) is fixedly connected to the inner bottom of the base shell (7), and the data acquisition and analysis instrument (61) is connected to the displacement sensing device (34) through the data cable (62).

8. The portable ultrasonic consolidation testing instrument for experiments according to claim 7, characterized in that, The pressure-bearing excitation transducer (1), pressure-bearing receiving transducer (2), sample (4), adjusting screw (32), displacement sensing device (34), pressure sensor (35), electric cylinder (36), servo motor (37) and reducer (38) are on the same axis.

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