Portable electric penetrometer

Abstract

The utility model belongs to the in-situ soil sample tester technical field relates to a portable electric penetration appearance, its characterized in that: including test base, connecting assembly and penetration assembly, the upper end of test base is installed with penetration assembly through connecting assembly. The portable electric penetration appearance, the structure design of test base and penetration assembly integration in prior art is dismantled the split type structure of test base and penetration assembly through connecting assembly, greatly reduces the storage volume, and it is convenient to carry back and forth, convenient to use.

Description

Technical Field

[0001] This utility model belongs to the technical field of undisturbed soil sample testing instruments, and relates to an instrument for testing the penetration resistance of undisturbed soil samples, specifically a portable electric penetrator. Background Technology

[0002] The electric penetrator (EPP) is a new type of geotechnical testing instrument suitable for indoor determination of the penetration resistance strength of general cohesive soils, soft soils, compacted soils, red clay, and loess. The EPP can improve the accuracy of the description of the soil being tested and reduce human error.

[0003] Chinese patent CN205593868U discloses a fully automatic concrete penetration resistance meter. The meter features a rotating platform on its base, with three test barrels mounted on the platform. An electro-hydraulic servo unit is also mounted on the base, with a slide rail on the servo unit. A lifting frame is installed on the slide rail and moves vertically up and down along the slide rail driven by the electro-hydraulic servo unit. A displacement sensor is installed on the lifting frame, and a support is mounted in the middle of the lifting frame. A conical disc is mounted on the support, and a resistance sensor is installed at the lower part of the conical disc. The resistance sensor is connected to the end of a rotating probe. The rotating platform, electro-hydraulic servo unit, displacement sensor, conical disc, and resistance sensor are connected to a microcomputer terminal processor. The microcomputer terminal processor enables automatic penetration of the rotating probe, shortening the observation time for testing personnel, reducing unnecessary trouble, and improving the accuracy of concrete setting time measurement.

[0004] Depending on the location of the undisturbed soil sample to be tested, the electric penetrator needs to be moved back and forth between the test sites. Currently, the electric penetrator is large in size, making it inconvenient to store and move back and forth.

[0005] Therefore, it is essential to design a portable electric penetrator. Summary of the Invention

[0006] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a portable electric penetrator that is easy to store and transport, easy to assemble and disassemble, and easy to implement.

[0007] The technical problem solved by this utility model is achieved through the following technical solution:

[0008] A portable electric penetrator is characterized by comprising a test base, a connecting component, and a penetrator component, wherein the penetrator component is mounted on the upper end of the test base via the connecting component.

[0009] Furthermore, the connecting assembly includes an internal threaded sleeve, a connecting stud, and a limiting nut. Two mounting holes are provided at a distance from left to right on the upper end face of the test base. An internal threaded sleeve extending into the test base is fixedly installed in the mounting holes. A connecting stud is threadedly connected to the internal threaded sleeve, and a limiting nut is threadedly installed on the connecting stud.

[0010] Furthermore, the penetration assembly includes a mounting plate, an electric slide, a pressure sensor, and a test probe. The electric slide is vertically mounted on the mounting plate, and an inverted L-shaped mounting block is mounted on the slider of the electric slide. A pressure sensor is mounted below the horizontal part of the L-shaped mounting block, and a test probe is mounted below the pressure sensor. Connection holes are provided at both ends of the mounting plate, and the penetration assembly is connected to the test base by placing the mounting plate on the limiting nut of the connecting stud.

[0011] Furthermore, it also includes a crimp nut, which is crimped onto the upper end of the mounting plate on the connecting stud.

[0012] Furthermore, the test base includes a base shell, a touch screen, a battery, and a controller. The controller and the battery that powers the controller are installed inside the base shell. The front end of the shell is a slope, and the touch screen connected to the controller is embedded on the slope. The pressure sensor and the electric slide are both connected to the controller.

[0013] Furthermore, it also includes a sample mounting assembly, which includes a base plate, a cross slide, and a clamping mechanism. The base plate is mounted on the upper surface of the test base, the cross slide is mounted on the base plate, and the clamping mechanism is mounted on the cross slide. The clamping mechanism includes a mounting horizontal plate, a mounting vertical plate, a fixed clamping arm, and a movable clamping arm. The mounting horizontal plate is mounted on the cross slide, and the mounting vertical plates are fixedly mounted at both ends of the mounting horizontal plate. A fixed clamping arm is fixedly mounted on one side of the mounting vertical plate, and a sliding clamping arm is threadedly mounted on the other side of the mounting vertical plate.

[0014] Furthermore, the fixed clamping arm consists of an arm rod and an arc-shaped clamping plate fixedly mounted at the end of the arm rod; the movable clamping arm consists of an adjusting screw and an arc-shaped clamping plate rotatably mounted at the end of the adjusting screw, with the other end of the adjusting screw threadedly connected to the mounting plate.

[0015] The advantages and positive effects of this utility model are:

[0016] 1. This portable electric penetrator, by transforming the existing integrated structure of the test base and penetrating component into a separate structure with detachable connecting components, greatly reduces the storage volume, making it convenient to move around and use.

[0017] 2. This portable electric penetrator, through its sample mounting assembly, can clamp and limit the sample, preventing sample movement due to instability during test probe insertion and ensuring the reliability of test data. Simultaneously, the sample mounting assembly can move the clamped sample forward, backward, left, and right via a cross slide, enabling automatic testing of the same sample at different positions. This meets the requirements of the test procedure and avoids the risk of hand injury from test probes due to manual sample movement in case of misoperation.

[0018] 3. This utility model is scientifically and rationally designed, and has the advantages of convenient storage and transportation, easy assembly and disassembly, high degree of automation, strong safety and easy implementation. It is a highly innovative portable electric penetrator. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a perspective view of the present invention (sample mounting assembly omitted);

[0021] Figure 3 This is a schematic diagram of the sample mounting assembly of this utility model.

[0022] Explanation of reference numerals in the attached figures

[0023] 1-Stepper motor, 2-Pressure sensor, 3-Electric slide, 4-Crimping nut, 5-Mounting plate, 6-Connecting stud, 7-Limit nut, 8-Sample mounting assembly, 9-Internal threaded sleeve, 10-Touch screen, 11-Test base, 12-L-shaped mounting block, 13-Test probe, 14-Base plate, 15-Mounting upright plate, 16-Arm, 17-Sample, 18-Arc-shaped clamping plate, 19-Adjusting screw, 20-Mounting horizontal plate, 21-Cross slide. Detailed Implementation

[0024] The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings:

[0025] An innovative portable electric penetrator includes a test base 11, a connecting component, and a penetrator component. The penetrator component is mounted on the upper end of the test base via the connecting component. The connecting component allows the penetrator component to be connected to the test component, enabling it to be stored separately when not in use, reducing storage volume and facilitating transportation.

[0026] The connecting assembly includes an internal threaded sleeve 9, a connecting stud 6, and a limiting nut 7. Two mounting holes are provided at a distance from left to right on the upper end face of the test base. An internal threaded sleeve extending into the test base is fixedly installed in the mounting holes. A connecting stud is threadedly connected to the internal threaded sleeve, and a limiting nut is threadedly installed on the connecting stud.

[0027] The penetration assembly includes a mounting plate 5, an electric slide 3, a pressure sensor 2, and a test probe 13. The electric slide is vertically mounted on the mounting plate, and the driver for the electric slide is a stepper motor 1. An inverted L-shaped mounting block 12 is mounted on the slider of the electric slide. A pressure sensor is mounted below the horizontal part of the L-shaped mounting block, and a test probe is mounted below the pressure sensor. The test probe can be replaced according to the test requirements. Connection holes are provided at both ends of the mounting plate. The penetration assembly is connected to the test base by placing the mounting plate on the limiting nut of the connecting stud.

[0028] It also includes a crimp nut 4, which is crimped onto the upper end of the mounting plate on the connecting stud.

[0029] During assembly, the installation height of the penetration component is adjusted according to the height of the sample, which is achieved by adjusting the position of the limiting nut on the connecting stud. Then, the penetration component is placed on the adjusted limiting nut through the mounting plate. In order to ensure the stability of the penetration component during operation, a crimping nut is set on the mounting plate to fix the penetration component to the connecting component.

[0030] The system also includes a sample mounting assembly 8, which comprises a base plate 14, a cross slide 21, and a clamping mechanism. According to the test procedure, during testing, the test needle needs to be inserted into different positions of the same sample, maintaining a perpendicular position to the sample during insertion. Conventional operation involves manually moving the sample; after testing one position, the sample needs to be moved manually for the next, which consumes manpower. Furthermore, accidental movement of the test needle can cause injury to personnel. Therefore, the cross slide designed in this invention automatically moves the sample, avoiding these problems. Simultaneously, the clamping mechanism secures the sample, preventing instability at the edge of the sample that could affect the test.

[0031] The sample mounting assembly is an integrated structure that is mounted on the test base with screws, making it easy to disassemble and install.

[0032] A base plate is screwed onto the upper surface of the test base, a cross slide is mounted on the base plate, and a clamping mechanism is mounted on the cross slide. The clamping mechanism includes a mounting horizontal plate 20, a mounting vertical plate 15, a fixed clamping arm, and a movable clamping arm. The mounting horizontal plate is mounted on the cross slide, and mounting vertical plates are fixedly mounted at both ends of the mounting horizontal plate. A fixed clamping arm is fixedly mounted on one side of the mounting vertical plate, and a sliding clamping arm is threadedly mounted on the other side of the mounting vertical plate.

[0033] To accommodate samples of different sizes, the clamping mechanism shown is adjustable. The fixed clamping arm consists of an arm 16 and an arc-shaped clamping plate 18 fixed to the end of the arm. The movable clamping arm consists of an adjusting screw 19 and an arc-shaped clamping plate rotatably mounted on the end of the adjusting screw. A rotating groove is provided in the middle of the back of the arc-shaped clamping plate, and a rotating disk is installed in the rotating groove. The end of the adjusting screw is fixed to the rotating disk, and the other end of the adjusting screw is threaded to the mounting plate.

[0034] The test base includes a base shell, a touch screen 10, a battery, and a controller. The controller and the battery that powers the controller are installed inside the base shell. The front end of the shell is a slope, and the touch screen connected to the controller is embedded on the slope. The pressure sensor, electric slide, and cross slide are all connected to the controller.

[0035] During use, adjust the opening angle between the two arc-shaped clamping plates according to the size of the sample 17 to be tested until the sample is clamped tightly. Measure the blank distance between the tip of the test needle and the surface of the sample (soil). Set the required penetration rate, penetration depth, correction distance, and test depth (total stroke not exceeding 170mm) on the touchscreen. Click the start button on the touchscreen to begin the test. At this time, the test needle begins to move downward under the action of the electric slide, completing the penetration test at one position of the sample; then the cross slide works, and the test needle continues to perform penetration tests at other positions of the sample, repeating this process until the test is completed, the sample is removed, and all operations are reset.

[0036] Although embodiments and drawings of the present invention have been disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, variations and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A portable electric penetrator, characterized in that: It includes a test base, a connecting component, and a penetration component, with the penetration component installed on the upper end of the test base via the connecting component; The connecting assembly includes an internally threaded sleeve, a connecting stud, and a limiting nut. Two mounting holes are provided at a distance from each other on the upper end face of the test base. An internally threaded sleeve that extends into the test base is fixedly installed in the mounting holes. A connecting stud is threaded into the internally threaded sleeve, and a limiting nut is threaded onto the connecting stud.

2. The portable electric penetrator according to claim 1, characterized in that: The penetration assembly includes a mounting plate, an electric slide, a pressure sensor, and a test probe. The electric slide is vertically mounted on the mounting plate, and an inverted L-shaped mounting block is mounted on the slider of the electric slide. The pressure sensor is mounted below the horizontal part of the L-shaped mounting block, and the test probe is mounted below the pressure sensor. Connection holes are provided at both ends of the mounting plate. The penetration assembly is connected to the test base by placing the mounting plate on the limiting nut of the connecting stud.

3. A portable electric penetrator according to claim 2, characterized in that: It also includes a crimp nut, which is crimped onto the upper end of the mounting plate on the connecting stud.

4. A portable electric penetrator according to claim 2, characterized in that: The test base includes a base shell, a touch screen, a battery, and a controller. The controller and the battery that powers the controller are installed inside the base shell. The front end of the shell is a slope, and the touch screen connected to the controller is embedded on the slope. The pressure sensor and the electric slide are both connected to the controller.

5. A portable electric penetrator according to claim 1, characterized in that: It also includes a sample mounting assembly, which includes a base plate, a cross slide, and a clamping mechanism. The base plate is mounted on the upper surface of the test base, the cross slide is mounted on the base plate, and the clamping mechanism is mounted on the cross slide. The clamping mechanism includes a mounting horizontal plate, a mounting vertical plate, a fixed clamping arm, and a movable clamping arm. The mounting horizontal plate is mounted on the cross slide, and the mounting vertical plates are fixedly mounted at both ends of the mounting horizontal plate. A fixed clamping arm is fixedly mounted on one side of the mounting vertical plate, and a sliding clamping arm is threadedly mounted on the other side of the mounting vertical plate.

6. A portable electric penetrator according to claim 5, characterized in that: The fixed clamping arm consists of an arm rod and an arc-shaped clamping plate fixedly mounted at the end of the arm rod; the movable clamping arm consists of an adjusting screw and an arc-shaped clamping plate rotatably mounted at the end of the adjusting screw, with the other end of the adjusting screw threadedly connected to the mounting plate.

Images