A taper degree measuring device based on a laser displacement sensor

Abstract

The application belongs to the technical field of substance consistency detection instrument, and particularly relates to a cone penetration measuring device based on a laser displacement sensor. The application comprises a sliding frame, a screw sliding table, a sliding plate, a laser displacement sensor, an electromagnet, a clamping groove, a guide column and a measuring table top. The laser displacement sensor is fixedly installed on the sliding plate and is used for real-time detection of the depth of a cone body penetrating into a sample. The electromagnet cooperates with the clamping groove and is used for fixing or releasing the cone body. The guide column is vertically arranged on the sliding plate and is matched with the cone body, so that the vertical falling of the cone body is ensured. The application adopts the laser displacement sensor to realize non-contact displacement detection, effectively solves the problems of low measuring precision, great influence of environment and complicated operation of the existing cone penetration meter, and realizes high-precision and high-stability automatic detection of the cone penetration.

Description

Technical Field

[0001] This application belongs to the technical field of material consistency testing instruments, and particularly relates to a cone penetration measuring device. It is suitable for measuring the cone penetration of various substances such as lubricating grease, petroleum jelly, pharmaceutical ointments, and semi-solid foods, and is widely used in quality testing and characteristic identification scenarios in the chemical, pharmaceutical, food, and petroleum industries. Background Technology

[0002] The cone penetration tester is a core testing instrument designed and manufactured according to national and international standards. Its working principle is based on the principle of free fall. At a specified temperature, a cone of a certain mass is released freely. By measuring the depth to which the cone penetrates the sample within a specified time, the consistency, hardness and other characteristics of the sample can be quantified. It is a key piece of equipment in the product design and quality control process.

[0003] Currently, most cone penetration meters use dial gauge readings or photoelectric sensors for displacement detection, which have several technical drawbacks: dial gauge readings rely on manual operation, which is not only inefficient but also prone to human visual errors and reading deviations, leading to insufficient measurement accuracy; traditional photoelectric sensors use contact or non-contact indirect sensing methods, which are greatly affected by ambient light and mechanical vibration, resulting in poor detection stability and slow response to displacement changes, making it impossible to accurately capture instantaneous displacement changes during the free fall of the cone; some cone penetration meters use an integrated design of the sensor and cone assembly, requiring the simultaneous replacement of the sensor when different cone sizes are needed to adapt to different sample testing requirements, leading to cumbersome operation, increased equipment maintenance costs, and the installation accuracy of the sensor can be affected by the disassembly and assembly process, further reducing measurement accuracy. Summary of the Invention

[0004] As a high-precision non-contact displacement detection element, laser displacement sensors have advantages such as fast response speed, high measurement accuracy, strong anti-interference ability, good stability, and non-contact detection without wear. They can realize real-time and continuous detection of displacement. If they can be reasonably applied to the displacement detection of cone penetration instruments, they can effectively solve the problems of low measurement accuracy, poor stability, and cumbersome operation of existing cone penetration instruments, and improve the automation level and reliability of cone penetration detection.

[0005] The purpose of this invention is to propose a cone penetration measuring device. In order to solve the technical defects of existing cone penetration instruments, such as low displacement detection accuracy, poor stability, cumbersome operation and high maintenance cost, this invention optimizes the selection and installation structure of sensors and utilizes the high precision and non-contact detection advantages of laser displacement sensors to achieve accurate and real-time detection of cone penetration depth. At the same time, it simplifies cone replacement operation, reduces equipment maintenance costs, and improves detection efficiency and reliability.

[0006] To achieve the above objectives, this application provides a cone penetration measuring device based on a laser displacement sensor, comprising: slide table; A lead screw slide fixedly installed on the slide frame; A sliding plate fixedly connected to the slide of the lead screw slide; A laser displacement sensor and an electromagnet are fixedly installed on the sliding plate; A slot that cooperates with the electromagnet to fix or release the cone; A guide post is vertically disposed on the sliding plate, and the guide post is adapted to the cone; And a measuring platform for placing sample cups. The lead screw slide automatically stops when adjusted to the limit sensor to prevent damage to the device. The cone is vertically loaded in the guide tube, and a retaining groove is used to fix the cone and prevent it from falling out and damaging the device.

[0007] Preferably, the cone penetration measuring device further includes a slide connecting plate, which is used to fix the slide of the lead screw slide and the sliding plate.

[0008] Preferably, the cone penetration measuring device further includes: a sensor fixing plate, which is fixedly installed on the sliding plate, and the laser displacement sensor is installed on the sensor fixing plate.

[0009] Preferably, the sensor mounting plate has a circular adjustment hole, and the laser displacement sensor is connected to the circular adjustment hole by bolts.

[0010] Preferably, the slide frame is further provided with a limit sensor to limit the lifting and lowering stroke of the slide plate.

[0011] Preferably, the limiting sensor is a photoelectric sensor.

[0012] Preferably, the cone penetration measuring device further includes a display module electrically connected to the laser displacement sensor.

[0013] Preferably, the cone penetration measuring device further includes a control module, which is connected to the lead screw slide, electromagnet, laser displacement sensor, limit sensor and display module respectively, and can preset the detection time and the initial height parameter of the cone to realize the automated control of the detection process.

[0014] Preferably, the display module is a high-definition touch screen.

[0015] Preferably, the slide frame is made of cold-rolled steel plate. Beneficial effects: This device uses a laser displacement sensor to achieve non-contact detection of the cone penetration depth, avoiding the wear and errors caused by contact detection. It can accurately capture the instantaneous displacement changes during the free fall of the cone, effectively solving the problems of low measurement accuracy and great susceptibility to environmental influences in existing cone penetration meters. The cone assembly and laser displacement sensor adopt a separate design, eliminating the need to disassemble the sensor when changing to different sizes of cones, simplifying the operation process and improving ease of use. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 For the three-dimensional representation of this application Figure 1 ; Figure 2 This is a sectional view of the cone assembly structure; Figure 3 For the three-dimensional representation of this application Figure 2 ; Figure 4 This is a three-dimensional view of the cone assembly structure.

[0017] In the figure: 1-Slide table frame; 2-Screw slide table; 3-Slide table connecting plate; 4-Limit sensor; 5-Sliding plate; 6-Electromagnet; 7-Laser displacement sensor; 8-Sensor fixing plate; 9-Slot; 10-Guide column; 11-Cone; 11a-Cone rod; 11b-Cone head; 12-Sample cup; 13-Display module. Detailed Implementation

[0018] 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. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the position 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.

[0020] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] like Figures 1-4 As shown, a cone penetration measuring device based on a laser displacement sensor includes a slide frame 1, a lead screw slide 2, a slide connecting plate 3, a limit sensor 4, a sliding plate 5, an electromagnet 6, a laser displacement sensor 7, a sensor fixing plate 8, a slot 9, a guide post 10, a cone 11, a sample cup 12, and a display module 13. The slide frame 1 is made of cold-rolled steel plate to ensure the stability of the equipment during operation and to avoid vibration affecting the detection accuracy. The slide frame 1 is fixed with a lead screw slide 2 by bolts, which can precisely control the lifting height of the sliding plate 5 to meet the adjustment requirements of the initial height of the cone 11.

[0023] A slide plate 3 is installed on the lead screw slide 2. The slide plate 5 is fixed to the slide plate 3 by bolts. A sensor fixing plate 8, an electromagnet 6 and a guide column 10 are fixedly installed on the slide plate 5. The inner diameter of the guide cylinder 10 is matched with the outer diameter of the cone rod 11a of the cone 11 to ensure that the cone 11 falls vertically without jamming or deflection.

[0024] The laser displacement sensor 7 is fixed to the sensor mounting plate 8 by bolts. The sensor mounting plate 8 has a circular adjustment hole. The bolt passes through the circular adjustment hole to fix the laser displacement sensor 7. The position of the laser displacement sensor 7 can be adjusted by loosening the bolts to ensure that the detection beam coincides with the axis of the cone rod 11a. The spot of the detection beam should be located at the center of the horizontal cross section of the cone rod 11a to avoid detection deviation.

[0025] When the electromagnet 6 is energized, it generates electromagnetic attraction. After the cone 11 is loaded into the guide cylinder 10, the slot 9 automatically engages and embeds into the annular groove, which can fix the cone 11 and prevent the device from moving.

[0026] The cone 11 includes a cone rod 11a and a cone head 11b. An annular groove is provided on the cone rod 11a. The groove cooperates with the slot 9. When the cone 11 is loaded into the guide cylinder 10, the slot 9 automatically engages and is embedded in the annular groove, which can fix the cone 11 and prevent the cone 11 from falling off during the movement and adjustment of the device. When the electromagnet 6 is de-energized and releases the cone 11, the working principle is that the slot 9 exits from the engaged annular groove, and the cone 11 can make free fall motion under the action of gravity.

[0027] The sample cup 12 is made of corrosion-resistant material and is used to hold the sample to be tested. The sample cup 12 is placed in the center of the measuring platform. The measuring platform surface is provided with a positioning groove. The sample cup 12 is embedded in the positioning groove to prevent the sample cup 12 from sliding during the test. By adjusting the up and down position of the lead screw slide 2, the sample surface is accurately aligned with the lower end of the cone 11b to ensure that the initial height of the cone 11 meets the test standard when it is released.

[0028] The limit sensor 4 is a photoelectric sensor, which is fixedly installed on the side surface of the slide frame 1 and corresponds to the position of the sliding plate 5. When the sliding plate 5 moves into the detection range of the limit sensor 4, the limit sensor 4 sends an electrical signal to the control module to control the lead screw slide 2 to stop running, preventing the sliding plate 5 from rising or falling excessively and protecting the device components.

[0029] The display module 13 uses a touch screen and is electrically connected to the laser displacement sensor 7 and the control module. It can display information such as detection displacement, detection time, and cone penetration value in real time. It also has data storage, query, and export functions. The detection data can be exported to a computer via a USB interface for subsequent data statistics and analysis.

[0030] The device also includes a control module, which is electrically connected to the lead screw slide 2, electromagnet 6, laser displacement sensor 7, limit sensor 4, and display module 13 respectively. It can preset parameters such as detection time (e.g., 5s, 10s) and initial height of the cone to realize automated control of the detection process.

[0031] The detection process in this embodiment is as follows: 1. Sample preparation: Put the sample to be tested (such as grease) into the sample cup 12, smooth the sample surface, and embed the sample cup 12 into the positioning groove of the measuring platform to ensure that the sample cup 12 is centered.

[0032] 2. Cone installation: Select a suitable cone 11 according to the sample specifications, insert the cone rod 11a of the cone 11 into the guide cylinder 10, so that the slot 9 engages and is embedded in the annular groove of the cone rod 11a, thus completing the fixing of the cone 11; 3. Parameter setting and position adjustment: Set the detection parameters through the display module 13. The preset detection time is 5s. Adjust the lead screw slide 2 through the control module to drive the sliding plate 5 and the cone 11 to move downwards until the lower end of the cone 11b is flush with the sample surface.

[0033] 4. Detection Start: Press the start button on the display module 13. The control module controls the electromagnet 6 to be energized and attracted. The cone 11 moves freely along the guide cylinder 10 under its own gravity, and the cone tip 11b penetrates the sample. At the same time, the laser displacement sensor 7 is activated to detect the displacement change of the top of the cone rod 11a in real time. The detected displacement data is transmitted to the control module in real time. The control module calculates the cone penetration value (i.e., the depth of the cone penetrating the sample) based on the displacement data and displays it on the display module 13 in real time.

[0034] 5. End of detection: After the preset detection time of 5 seconds is reached, the control module controls the laser displacement sensor 7 to stop detection and locks the final cone penetration value on the display module 13; then, the control module controls the lead screw slide 2 to drive the sliding plate 5 and the cone 11 to rise and reset, remove the sample cup 12, replace the sample or cone, and the next detection can be carried out.

[0035] It should be noted that the cone penetration measuring device of this application can be replaced with cones 11 of different specifications (such as cones with different cone angles and different masses) according to the testing requirements of different samples. When replacing, simply engage the electromagnet 6, remove the old cone, install the new cone, and disconnect the electromagnet 6.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Finally, it should be noted that the above are merely preferred embodiments of this application and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A cone penetration measuring device, characterized in that, include: Slide table (1); A screw slide (2) is fixedly installed on the slide frame (1); A sliding plate (5) is fixedly connected to the slide of the lead screw slide (2); A laser displacement sensor (7) and an electromagnet (6) are fixedly installed on the sliding plate (5); A slot (9) that cooperates with the electromagnet (6) for fixing or releasing the cone (11); A guide post (10) is vertically arranged on the sliding plate (5), and the guide post (10) is adapted to the cone (11); And a measuring platform for placing the sample cup (12).

2. The cone penetration measuring device according to claim 1, characterized in that, include: The slide plate (3) is used to fix the slide of the lead screw slide (2) and the slide plate (5).

3. The cone penetration measuring device according to claim 1, characterized in that, include: The sensor fixing plate (8) is fixedly installed on the sliding plate (5), and the laser displacement sensor (7) is installed on the sensor fixing plate (8).

4. The cone penetration measuring device according to claim 3, characterized in that, The sensor mounting plate (8) has a circular adjustment hole, and the laser displacement sensor (7) is connected to the circular adjustment hole by bolts.

5. The cone penetration measuring device according to claim 4, characterized in that, The slide frame (1) is also equipped with a limit sensor (4) to limit the lifting stroke of the slide plate (5).

6. The cone penetration measuring device according to claim 5, characterized in that, The limit sensor (4) is a photoelectric sensor.

7. The cone penetration measuring device according to claim 5, characterized in that, It also includes a display module (13) electrically connected to the laser displacement sensor (7).

8. The cone penetration measuring device according to claim 7, characterized in that, include: The control module is connected to the lead screw slide (2), electromagnet (6), laser displacement sensor (7), limit sensor (4), and display module (13) respectively. It can preset the detection time and the initial height parameter of the cone to realize the automated control of the detection process.

9. The cone penetration measuring device according to claim 7, characterized in that, The display module (13) is a high-definition touch screen.

10. The cone penetration measuring device according to claim 1, characterized in that, The slide frame (1) is made of cold-rolled steel plate.

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