A portable indentation analyzer

Abstract

The present invention discloses a portable indentation analyzer, comprising a housing, a pressurizing component, a displacement counting component, a driving component and a pressure sensor; the pressurizing component and the displacement counting component are slidably connected to the housing, and the driving component is used to drive the pressurizing component and the displacement counting component to slide; the displacement counting component is slidably connected to the pressurizing component, and one end of the displacement counting component toward the measured surface extends out of the pressurizing component; during the process of the driving component driving the pressurizing component and the displacement counting component to slide toward the measured surface, the displacement counting component generates a relative displacement with the pressurizing component after contacting the measured surface, and the displacement counting component is used to obtain the relative displacement distance between the pressurizing component and the displacement counting component; the pressure sensor is used to obtain the pressure value of the pressurizing component. The portable indentation analyzer of the present invention has the characteristics of high precision, high stability and portability, and can accurately measure the indentation depth and pressure on the surface of a material.

Description

Technical Field

[0001] The invention relates to the technical field of material performance testing equipment, and in particular to a portable indentation analyzer. Background Art

[0002] In the field of materials science and engineering, indentation testing is a commonly used method for testing the mechanical properties of materials. Understanding the indentation characteristics of materials is crucial for evaluating the hardness, toughness, elasticity and other physical properties of materials. Traditional indentation testing equipment is usually bulky and complicated to operate, which is not convenient for on-site use and cannot meet the needs of rapid testing of material properties in different working environments. For example, in construction sites, field explorations and other scenarios, it is difficult to use existing large-scale indentation testing equipment to test materials, which limits the timely evaluation of material properties and quality control. With the development of technology, portable indentation analyzers have gradually become a research hotspot. Therefore, it is particularly important to develop a portable, easy-to-operate device that can accurately measure indentation displacement and pressure. Summary of the invention

[0003] The purpose of the present invention is to provide a portable indentation analyzer to solve the problems raised in the above background technology. To achieve the above purpose, the present invention provides the following technical solutions:

[0004] A portable indentation analyzer comprises a housing, a pressurizing component, a displacement counting component, a driving component and a pressure sensor; the pressurizing component and the displacement counting component are slidably connected to the housing, and the driving component is used to drive the pressurizing component and the displacement counting component to slide; the displacement counting component is slidably connected to the pressurizing component, and one end of the displacement counting component facing a measured surface extends out of the pressurizing component; in the process of the driving component driving the pressurizing component and the displacement counting component to slide toward the measured surface, the displacement counting component generates a relative displacement with the pressurizing component after contacting the measured surface, and the displacement counting component is used to obtain the relative displacement distance between the pressurizing component and the displacement counting component; the pressure sensor is used to obtain the pressure value of the pressurizing component.

[0005] Furthermore, the displacement counting component includes a slider, a probe, a grating ruler and a grating ruler reading head; the slider is slidably connected to the pressurizing component; the probe is fixedly connected to the slider, and one end of the probe facing the measured surface extends out of the pressurizing component; the grating ruler is fixed on the pressurizing component, and the grating ruler reading head is fixedly connected to the slider; when the slider and the grating ruler reading head slide relative to the pressurizing component and the grating ruler, the grating ruler reading is read by the grating ruler reading head to obtain the relative displacement distance between the pressurizing component and the displacement counting component.

[0006] Furthermore, an elastic component is provided between the slider and the housing, and the elastic component drives one end of the probe toward the measured surface to extend out of the pressurizing component.

[0007] Furthermore, the driving assembly includes a motor and a camshaft, and the camshaft is fixedly connected to the output shaft of the motor; a needle bearing is provided in the pressurizing assembly, and the camshaft is cooperatively connected to the needle bearing.

[0008] Furthermore, the driving assembly also includes a Hall sensor for sensing the camshaft.

[0009] Furthermore, the pressurizing assembly includes a sliding kit, a pressure rod kit and a pressure head; the needle bearing is arranged in the sliding kit; the pressure rod kit is fixedly connected to the bottom of the sliding kit, and the pressure sensor is arranged between the sliding kit and the pressure rod kit; the pressure head is fixedly connected to the lower end of the pressure rod kit.

[0010] Furthermore, the sliding kit includes a frame and a frame cover, the needle bearing is arranged in the frame, the frame cover is fixedly connected to the frame, and the pressure sensor is arranged at the bottom of the frame.

[0011] Furthermore, symmetrical springs are arranged between the frame cover and the frame.

[0012] Furthermore, the pressure rod kit includes a first pressure rod and a second pressure rod, the second pressure rod is fixedly connected to the first pressure rod, and the pressure head is fixedly connected to the lower end of the first pressure rod; a slide groove is provided in the first pressure rod, and the displacement counting assembly is slidably connected in the slide groove; a groove is provided at the upper end of the second pressure rod for placing the pressure sensor.

[0013] Furthermore, a positioning pin is provided between the first pressure rod and the second pressure rod.

[0014] The beneficial effects of the present invention are as follows: the portable indentation analyzer of the present invention has a compact overall structure and is easy to carry, and can meet the needs of indentation detection of materials in different scenarios, greatly improving the convenience of detection. By accurately measuring the relative displacement distance between the pressurizing component and the displacement counting component, and in conjunction with the pressure value obtained by the pressure sensor, the indentation depth and pressure on the surface of the material can be accurately measured, providing reliable data support for accurately calculating the mechanical properties parameters of the material, improving the detection accuracy, and being suitable for indentation tests in various materials science and engineering fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the decomposition structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the exploded structure of the displacement counting assembly and the pressure rod assembly of the present invention.

[0018] Figure 3 It is a schematic diagram of the exploded structure of the sliding kit and the pressure sensor of the present invention.

[0019] Figure 4 It is a cross-sectional view of the present invention.

[0020] It should be noted that the drawings are not necessarily drawn to scale, but are merely shown in a schematic manner that does not affect the reader's understanding. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the present invention, the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like are based on the directions or positional relationships shown in the drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction.

[0023] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0024] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0026] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0027] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0028] like Figures 1 to 4 As shown, a portable indentation analyzer includes a housing 100, a pressurizing component 200, a displacement counting component 300, a driving component 400 and a pressure sensor 500. The housing 100 serves as the main structure of the analyzer and is used to accommodate and protect the internal components. The housing 100 includes a main body and a handle. The driving component 400 is used to apply pressure to drive the pressurizing component 200 to move toward the surface of the material to be tested. Under the action of the driving component 400, the pressurizing component 200 applies pressure to the surface of the material to be tested to achieve an indentation test. The displacement counting component 300 is used to obtain the indentation depth of the pressurizing component 200. The pressure sensor 500 is used to obtain the pressure value applied by the driving component 400 to the pressurizing component 200. The pressurizing component 200, the displacement counting component 300, the driving component 400 and the pressure sensor 500 are connected to the control end through wires, and the analyzer is controlled by the control end; the control end then cooperates with the computer to perform data analysis on the pressure value and the indentation depth, and then the stress-strain curve of the tested material can be obtained, and some mechanical properties such as tensile strength, yield strength, elastic modulus, fracture toughness, etc. can be calculated through relevant formulas.

[0029] Specifically, the specific structure and working principle of each component are as follows: the pressurizing component 200 and the displacement counting component 300 are slidably connected to the main part of the housing 100; the driving component 400 is arranged in the handle part of the housing 100, and the driving component 400 is used to drive the pressurizing component 200 and the displacement counting component 300 to slide; the pressurizing component 200 slides toward the surface of the material to be tested under the driving action of the driving component 400 to apply pressure to achieve the indentation test of the material to be tested. At the same time, the displacement counting component 300 is also slidably connected to the pressurizing component 200; and the end of the displacement counting component 300 facing the surface to be tested also extends out of the pressurizing component 200 and the housing 100, so as to form an initial contact with the surface of the material to be tested. When the driving component 400 drives the pressurizing component 200 and the displacement counting component 300 to slide toward the measured surface, the extended end of the displacement counting component 300 first contacts the measured surface and stops sliding, and the pressurizing component 200 continues to slide toward the surface of the material being measured, thereby causing a relative displacement between the displacement counting component 300 and the pressurizing component 200; the relative displacement distance between the pressurizing component 200 and the displacement counting component 300 is then obtained through the displacement counting component 300 to determine the indentation depth.

[0030] The portable indentation analyzer of the present application has a compact overall structure and is easy to carry. It can meet the needs of indentation detection of materials in different scenarios, greatly improving the convenience of detection. By accurately measuring the relative displacement distance between the pressurizing component 200 and the displacement counting component 300, and cooperating with the pressure value obtained by the pressure sensor 500, the indentation depth and pressure on the surface of the material can be accurately measured, providing reliable data support for accurately calculating the mechanical properties parameters of the material, improving the detection accuracy, and being suitable for indentation tests in various materials science and engineering fields.

[0031] As an example, see Figure 2 and Figure 4 The displacement counting component 300 includes a slider 310, a probe 320, a grating ruler 330 and a grating ruler reading head 340; the slider 310 is slidably connected to the pressurizing component 200; the probe 320 is fixedly connected to the slider 310, and one end of the probe 320 facing the measured surface extends out of the pressurizing component 200; the grating ruler 330 is fixed on the pressurizing component 200, and the grating ruler reading head 340 is fixedly connected to the slider 310; when the slider 310 and the grating ruler reading head 340 slide relative to the pressurizing component 200 and the grating ruler 330, the reading of the grating ruler 330 is read by the grating ruler reading head 340 to obtain the relative displacement distance between the pressurizing component 200 and the displacement counting component 300.

[0032] In order to ensure that the probe 320 can stably and accurately contact the surface to be tested, an elastic component 600 is provided between the slider 310 and the housing 100, and the elastic component 600 drives the probe 320 to extend out of the pressurizing component 200 at one end facing the surface to be tested. The provision of the elastic component 600 enables the probe 320 to automatically extend when not being tested, which facilitates operation and improves testing efficiency.

[0033] As an example, see Figure 1 and Figure 4 The driving assembly 400 includes a motor 410 and a camshaft 420, and the camshaft 420 is fixedly connected to the output shaft of the motor 410. A needle bearing 700 is provided in the pressurizing assembly 200, and the camshaft 420 is connected to the needle bearing 700, so that the horizontal rotation of the camshaft 420 is converted into the vertical sliding of the pressurizing assembly 200, so that the pressurizing assembly 200 can slide smoothly and accurately relative to the housing 100, and the pressurizing assembly 200 applies pressure to the surface of the material to be tested during the downward sliding process, thereby realizing the indentation test. The driving assembly 400 also includes a Hall sensor 430, which is used to sense and monitor the rotation of the camshaft 420, so as to achieve precise control of the driving assembly 400 and ensure the stability and reliability of the operation of the analyzer.

[0034] As an example, see Figures 1 to 4 The pressurizing assembly 200 includes a sliding assembly 210, a pressure rod assembly 220 and a pressure head 230; a needle bearing 700 is arranged in the sliding assembly 210; the pressure rod assembly 220 is fixedly connected below the sliding assembly 210, and a pressure sensor 500 is arranged between the sliding assembly 210 and the pressure rod assembly 220. The pressure head 230 is fixedly connected to the lower end of the pressure rod assembly 220, and is used to contact with the surface of the material to be tested to form an indentation.

[0035] As an example, see Figure 3 and Figure 4 The sliding kit 210 includes a frame 211 and a frame cover 212. The needle bearing 700 is arranged in the frame 211, and the frame cover 212 is fixedly connected to the frame 211. The pressure sensor 500 is arranged at the bottom of the frame 211 to measure the pressure on the sliding kit 210 during the indentation test. In order to ensure the stability of the frame cover 212 and reduce vibration, and ensure the uniformity of pressure application, a symmetrical spring 213 is arranged between the frame cover 212 and the frame 211.

[0036] As an example, see Figure 2 and Figure 4The pressure rod set 220 includes a first pressure rod 221 and a second pressure rod 222, the second pressure rod 222 is fixedly connected to the first pressure rod 221, and the pressure head 230 is fixedly connected to the lower end of the first pressure rod 221. A slide groove is provided in the first pressure rod 221, and the displacement counting assembly 300 is slidably connected in the slide groove. A groove is provided at the upper end of the second pressure rod 222 for placing a pressure sensor 500. In order to ensure the docking accuracy and stability between the first pressure rod 221 and the second pressure rod 222, a positioning pin 223 is provided between the first pressure rod 221 and the second pressure rod 222, which further improves the detection performance of the analyzer.

[0037] As an example, see Figure 4 The indenter 230 kit consists of a spherical tungsten carbide indenter 230, a base, a cylindrical pin and a sleeve; the base is conical, with a flat bottom at the bottom, and a ball holder is provided at the front end of the cone for placing the tungsten carbide indenter 230; a conical circular hole is provided at the bottom of the first sleeve to partially expose the spherical indenter 230, and a full circle of vertical anti-slip stripes is provided on the outer arc surface of the sleeve.

[0038] The detection operation process of the portable indentation analyzer of this application is as follows:

[0039] Before testing, the surface of the material to be tested is polished first, and then the portable indentation analyzer is placed on the surface of the material to be tested so that the probe 320 contacts the surface to be tested; at the same time, the analyzer can be fixed using relevant auxiliary tooling so that the analyzer can always maintain a stable preload during operation.

[0040] The motor 410 is started through the control end, and the motor 410 drives the camshaft 420 to rotate. The camshaft 420 drives the pressurizing component 200 to slide downward through the needle bearing 700, and the displacement counting component 300 also slides down. When the probe 320 contacts the measured surface, due to the obstruction of the measured surface, the slider 310 and the grating ruler reading head 340 produce an upward relative displacement relative to the pressurizing component 200 and the grating ruler 330. The grating ruler reading head 340 reads the reading of the grating ruler 330, thereby obtaining the relative displacement distance between the pressurizing component 200 and the displacement counting component 300 and determining the indentation depth. During the downward pressure of the pressurizing component 200, the pressure sensor 500 obtains the pressure value of the pressurizing component 200 in real time.

[0041] In conjunction with a computer, based on the acquired pressure value and relative displacement distance, the hardness, elastic modulus and other mechanical performance parameters of the tested material are calculated through pre-set algorithms and formulas, and displayed on the analyzer's display screen.

[0042] After the test is completed, the analyzer is reset and the next test can be performed.

[0043] Regarding the embodiments of the present invention, it should also be noted that, in the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0044] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. The protection scope of the present invention shall be subject to the protection scope of the claims. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A portable indentation analyzer, characterized in that: The invention comprises a housing (100), a pressurizing component (200), a displacement counting component (300), a driving component (400) and a pressure sensor (500); the pressurizing component (200) and the displacement counting component (300) are slidably connected to the housing (100); the driving component (400) is used to drive the pressurizing component (200) and the displacement counting component (300) to slide; the displacement counting component (300) is slidably connected to the pressurizing component (200); one end of the displacement counting component (300) extends toward a surface to be measured. The pressure sensor (500) is configured to move the pressure component (200) out of the pressure component (200); when the driving component (400) drives the pressure component (200) and the displacement counting component (300) to slide toward the measured surface, the displacement counting component (300) contacts the measured surface and generates a relative displacement with the pressure component (200); the displacement counting component (300) is used to obtain the relative displacement distance between the pressure component (200) and the displacement counting component (300); and the pressure sensor (500) is used to obtain the pressure value applied to the pressure component (200).

2. The portable indentation analyzer according to claim 1, characterized in that: The displacement counting component (300) comprises a slider (310), a probe (320), a grating ruler (330) and a grating ruler reading head (340); the slider (310) is slidably connected to the pressurizing component (200); the probe (320) is fixedly connected to the slider (310), and one end of the probe (320) facing the measured surface extends out of the pressurizing component (200); the grating ruler (330) is fixed on the pressurizing component (200), and the grating ruler reading head (340) is fixedly connected to the slider (310); when the slider (310) and the grating ruler reading head (340) slide relative to the pressurizing component (200) and the grating ruler (330), the grating ruler reading head (340) reads the reading of the grating ruler (330) to obtain the relative displacement distance between the pressurizing component (200) and the displacement counting component (300).

3. The portable indentation analyzer according to claim 2, characterized in that: An elastic component (600) is arranged between the slider (310) and the housing (100), and the elastic component (600) drives one end of the probe (320) toward the measured surface to extend out of the pressurizing component (200).

4. The portable indentation analyzer according to claim 1, characterized in that: The driving assembly (400) comprises a motor (410) and a camshaft (420), wherein the camshaft (420) is fixedly connected to an output shaft of the motor (410); a needle bearing (700) is provided in the pressurizing assembly (200), and the camshaft (420) is cooperatively connected to the needle bearing (700).

5. The portable indentation analyzer according to claim 4, characterized in that: The driving assembly (400) further includes a Hall sensor (430) for sensing the camshaft (420).

6. The portable indentation analyzer according to claim 4, characterized in that: The pressurizing assembly (200) comprises a sliding assembly (210), a pressure rod assembly (220) and a pressure head (230); the needle bearing (700) is arranged in the sliding assembly (210); the pressure rod assembly (220) is fixedly connected below the sliding assembly (210), and the pressure sensor (500) is arranged between the sliding assembly (210) and the pressure rod assembly (220); and the pressure head (230) is fixedly connected to the lower end of the pressure rod assembly (220).

7. The portable indentation analyzer according to claim 6, characterized in that: The sliding kit (210) comprises a frame (211) and a frame cover (212), the needle roller bearing (700) is arranged in the frame (211), the frame cover (212) is fixedly connected to the frame (211), and the pressure sensor (500) is arranged at the bottom of the frame (211).

8. The portable indentation analyzer according to claim 7, characterized in that: Symmetrical springs (213) are arranged between the frame cover (212) and the frame (211).

9. The portable indentation analyzer according to claim 6, characterized in that: The pressure rod kit (220) comprises a first pressure rod (221) and a second pressure rod (222), wherein the second pressure rod (222) is fixedly connected to the first pressure rod (221), and the pressure head (230) is fixedly connected to the lower end of the first pressure rod (221); a slide groove is provided in the first pressure rod (221), and the displacement counting assembly (300) is slidably connected in the slide groove; and a groove is provided at the upper end of the second pressure rod (222) for placing the pressure sensor (500).

10. The portable indentation analyzer according to claim 9, characterized in that: A positioning pin (223) is provided between the first pressing rod (221) and the second pressing rod (222).

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