Portable indentation analyzer

Abstract

The utility model discloses a portable indentation analyzer which comprises a shell, a pressurizing assembly, a displacement counting assembly, a driving assembly and a pressure sensor, the pressurizing assembly and the displacement counting assembly are in sliding connection with the shell, and the driving assembly is used for driving the pressurizing assembly and the displacement counting assembly to slide; the displacement counting assembly is in sliding connection with the pressurizing assembly, and one end, facing the measured surface, of the displacement counting assembly extends out of the pressurizing assembly; in the process that the driving assembly drives the pressurizing assembly and the displacement counting assembly to slide towards the measured surface, the displacement counting assembly makes contact with the measured surface and then generates relative displacement with the pressurizing assembly, and the displacement counting assembly is used for obtaining the relative displacement distance between the pressurizing assembly and the displacement counting assembly. The pressure sensor is used for obtaining the pressure value borne by the pressurizing assembly. The portable indentation analyzer disclosed by the utility model 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 utility model relates to material performance detection equipment technical field especially relates to a portable indentation analyzer. BACKGROUND

[0002] In the field of material science and engineering, indentation test is a commonly used material mechanical property test method, and understanding the indentation characteristics of materials is crucial for evaluating the hardness, toughness, elasticity and other physical properties of materials. The traditional indentation test equipment is usually large in size and complex in operation, which is not convenient for on-site use and cannot meet the demand of rapid detection of material performance in different working environments. For example, in the construction site, field exploration and other scenes, it is difficult to use the existing large indentation detection equipment to detect materials, which limits the timely evaluation and quality control of material performance. 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 and accurate indentation displacement and pressure measuring device. SUMMARY

[0003] The utility model discloses a portable indentation analyzer to solve the problems raised in the background art. To achieve the above purpose, the utility model provides the following technical scheme:

[0004] A portable indentation analyzer, comprising a shell, a pressure assembly, a displacement meter assembly, a drive assembly and a pressure sensor, the pressure assembly and the displacement meter assembly are slidingly connected with the shell, the drive assembly is used to drive the pressure assembly and the displacement meter assembly to slide, the displacement meter assembly is slidingly connected with the pressure assembly, one end of the displacement meter assembly towards the measured surface extends out of the pressure assembly, during the process of the drive assembly driving the pressure assembly and the displacement meter assembly to slide towards the measured surface, the displacement meter assembly contacts the measured surface and generates relative displacement with the pressure assembly, the displacement meter assembly is used to obtain the relative displacement distance between the pressure assembly and the displacement meter assembly, and the pressure sensor is used to obtain the pressure value of the pressure assembly.

[0005] Further, the displacement meter assembly comprises a slider, a probe, a grating ruler and a grating ruler reading head, the slider is slidingly connected with the pressure assembly, the probe is fixedly connected with the slider, one end of the probe towards the measured surface extends out of the pressure assembly, the grating ruler is fixed on the pressure assembly, and the grating ruler reading head is fixedly connected with the slider, when the slider and the grating ruler reading head slide relative to the pressure assembly and the grating ruler, the reading of the grating ruler is read by the grating ruler reading head to obtain the relative displacement distance between the pressure assembly and the displacement meter assembly.

[0006] Further, an elastic assembly is arranged between the slider and the shell, and the elastic assembly drives the probe to extend out of the pressing assembly towards one end of the measured surface.

[0007] Further, the driving assembly comprises a motor and a camshaft, the camshaft is fixedly connected with an output shaft of the motor; a needle bearing is arranged in the pressing assembly, and the camshaft is in matched connection with the needle bearing.

[0008] Further, the driving assembly further comprises a Hall sensor for sensing the camshaft.

[0009] Further, the pressing assembly comprises a sliding sleeve assembly, a pressure rod sleeve assembly and a pressure head; the needle bearing is arranged in the sliding sleeve assembly; the pressure rod sleeve assembly is fixedly connected below the sliding sleeve assembly, the pressure sensor is arranged between the sliding sleeve assembly and the pressure rod sleeve assembly; and the pressure head is fixedly connected to the lower end of the pressure rod sleeve assembly.

[0010] Further, the sliding sleeve assembly comprises a rack and a rack cover, the needle bearing is arranged in the rack, the rack cover is fixedly connected to the rack, and the pressure sensor is arranged at the bottom of the rack.

[0011] Further, symmetric springs are arranged between the rack cover and the rack.

[0012] Further, the pressure rod sleeve assembly comprises 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 sliding groove is arranged in the first pressure rod, and the displacement meter assembly is in sliding connection with the sliding groove; and a groove is arranged at the upper end of the second pressure rod for placing the pressure sensor.

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

[0014] The portable indentation analyzer has the advantages that: the portable indentation analyzer has a compact overall structure and is convenient to carry, can meet the needs of indentation detection of materials in different scenes, and greatly improves the convenience of detection. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0016] Figure 1 It is a disassembled structural schematic view of the present application.

[0017] Figure 2 It is a disassembled structural schematic view of the displacement gauge array component and the pressure rod sleeve component of the present application.

[0018] Figure 3 It is a disassembled structural schematic view of the sliding sleeve component and the pressure sensor of the present application.

[0019] Figure 4 It is a sectional view of the present application.

[0020] It should be noted that the drawings are not necessarily drawn to scale, but are only shown in a schematic manner without affecting the understanding of the reader. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without any creative effort are within the scope of protection of the present application.

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

[0023] In addition, in addition to indicating the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific situation.

[0024] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0025] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0026] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0027] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such 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 drive component 400, and a pressure sensor 500. The housing 100 serves as the main structure of the analyzer, housing and protecting the internal components. The housing 100 includes a main body and a handle. The drive component 400 applies pressure to drive the pressurizing component 200 to move towards the surface of the material being tested. Under the action of the drive component 400, the pressurizing component 200 applies pressure to the surface of the material being tested, achieving indentation testing. 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 to the pressurizing component 200 by the drive component 400. The pressurization component 200, displacement counting component 300, drive component 400, and pressure sensor 500 are connected to the control terminal via wires. The control terminal controls the analyzer. The control terminal, in conjunction with a computer, analyzes the pressure value and indentation depth, and then obtains the stress-strain curve of the tested material. Some mechanical properties, such as tensile strength, yield strength, elastic modulus, and fracture toughness, are calculated using relevant formulas.

[0029] Specifically, the specific structure and working principle of each component are as follows: the pressurizing assembly 200 and the displacement gauge assembly 300 are in sliding connection with the main body part of the shell 100; the driving assembly 400 is arranged in the handle part of the shell 100, and the driving assembly 400 is used to drive the pressurizing assembly 200 and the displacement gauge assembly 300 to slide; the pressurizing assembly 200 slides to the surface of the measured material under the driving action of the driving assembly 400 to apply pressure, so as to realize the indentation test on the measured material. Meanwhile, the displacement gauge assembly 300 is also in sliding connection with the pressurizing assembly 200; and the end of the displacement gauge assembly 300 towards the measured surface also extends out of the pressurizing assembly 200 and the shell 100, so as to form an initial contact on the surface of the measured material. When the driving assembly 400 drives the pressurizing assembly 200 and the displacement gauge assembly 300 to slide towards the measured surface, the extending end of the displacement gauge assembly 300 first contacts the measured surface and stops sliding, and the pressurizing assembly 200 continues to slide towards the surface of the measured material, so that the relative displacement between the displacement gauge assembly 300 and the pressurizing assembly 200 is generated; and then the relative displacement distance between the pressurizing assembly 200 and the displacement gauge assembly 300 is obtained through the displacement gauge assembly 300, so as to determine the indentation depth.

[0030] The portable indentation analyzer of the present application has a compact overall structure, is convenient to carry, can meet the needs of indentation detection of materials in different scenes, and greatly improves the convenience of detection. By accurately measuring the relative displacement distance between the pressurizing assembly 200 and the displacement gauge assembly 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, which provides reliable data support for accurately calculating the mechanical performance parameters of the material, improves the detection accuracy, and is suitable for indentation tests in various material science and engineering fields.

[0031] As an example, referring to Figure 2 and Figure 4 , the displacement gauge assembly 300 includes a sliding block 310, a probe 320, a grating ruler 330, and a grating ruler reading head 340; the sliding block 310 is in sliding connection with the pressurizing assembly 200; the probe 320 is fixedly connected with the sliding block 310, and the end of the probe 320 towards the measured surface extends out of the pressurizing assembly 200; the grating ruler 330 is fixed on the pressurizing assembly 200, and the grating ruler reading head 340 is fixedly connected with the sliding block 310; when the sliding block 310 and the grating ruler reading head 340 slide relative to the pressurizing assembly 200 and the grating ruler 330, the reading of the grating ruler 330 is read through the grating ruler reading head 340, so as to obtain the relative displacement distance between the pressurizing assembly 200 and the displacement gauge assembly 300.

[0032] In order to ensure that the probe 320 can stably and accurately contact the measured surface, the elastic assembly 600 is arranged between the slider 310 and the shell 100, which drives the probe 320 to extend out of the pressing assembly 200 towards one end of the measured surface. The arrangement of the elastic assembly 600 enables the probe 320 to automatically extend out when not detected, which is convenient for operation and improves the detection efficiency.

[0033] As an example, referring to Figure 1 and Figure 4 , the driving assembly 400 includes a motor 410 and a camshaft 420, and the camshaft 420 is fixedly connected with the output shaft of the motor 410. The needle bearing 700 is arranged in the pressing assembly 200, and the camshaft 420 is connected with the needle bearing 700, which changes the horizontal rotation of the camshaft 420 into the vertical sliding of the pressing assembly 200, so that the pressing assembly 200 can stably and accurately slide relative to the shell 100. The pressing assembly 200 exerts pressure on the surface of the measured material during the downward sliding process, thereby realizing the indentation test. The driving assembly 400 further includes a Hall sensor 430 for sensing and monitoring the rotation of the camshaft 420, thereby realizing accurate control of the driving assembly 400 and ensuring the stability and reliability of the analyzer operation.

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

[0035] As an example, referring to Figure 3 and Figure 4 , the sliding sleeve 210 includes a rack 211 and a rack cover 212, and the needle bearing 700 is arranged in the rack 211, and the rack cover 212 is fixedly connected to the rack 211. The pressure sensor 500 is arranged at the bottom of the rack 211 for measuring the pressure received by the sliding sleeve 210 during the indentation test. In order to ensure the stability of the rack cover 212 and reduce vibration, and to ensure the uniformity of pressure application, the symmetric spring 213 is arranged between the rack cover 212 and the rack 211.

[0036] As an example, referring to Figure 2 and Figure 4The pressing rod set 220 includes a first pressing rod 221 and a second pressing rod 222, the second pressing rod 222 is fixedly connected to the first pressing rod 221, and the pressing head 230 is fixedly connected to the lower end of the first pressing rod 221. A sliding groove is arranged in the first pressing rod 221, and the displacement gauge set 300 is slidingly connected in the sliding groove. A groove is arranged at the upper end of the second pressing rod 222, and is used for placing the pressure sensor 500. In order to ensure the docking precision and stability between the first pressing rod 221 and the second pressing rod 222, a positioning pin 223 is arranged between the first pressing rod 221 and the second pressing rod 222, and the detection performance of the analyzer is further improved.

[0037] As an example, refer to Figure 4 The pressing head 230 set is composed of a spherical tungsten carbide pressing head 230, a base, a cylindrical pin and a sheath; the base is conical, the bottom end is a flat bottom, and a ball holder position is arranged at the conical front end, and is used for placing the tungsten carbide pressing head 230; the first sheath has a conical circular hole at the bottom, and the spherical pressing head 230 can be partially exposed, and the outer circular arc surface of the sheath has a vertical anti-skid stripe in a whole circle.

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

[0039] Before detection, the surface of the measured material is polished first, then the portable indentation analyzer is placed on the surface of the measured material, so that the probe 320 contacts the measured surface; at the same time, related auxiliary tooling can be used to fix the analyzer, so that the analyzer can always maintain stable pre-tightening force during operation.

[0040] The motor 410 is started through the control end, the motor 410 drives the camshaft 420 to rotate, the camshaft 420 drives the pressing assembly 200 to slide downward through the needle bearing 700, and the displacement gauge set 300 also slides downward at the same time. When the probe 320 contacts the measured surface, due to the blockage of the measured surface, the slider 310 and the grating ruler reading head 340 relatively displace upward with respect to the pressing assembly 200 and the grating ruler 330, the grating ruler reading head 340 reads the reading of the grating ruler 330, so as to obtain the relative displacement distance between the pressing assembly 200 and the displacement gauge set 300, and determine the indentation depth. In the process of pressing the pressing assembly 200 downward, the pressure sensor 500 obtains the pressure value borne by the pressing assembly 200 in real time.

[0041] In cooperation with the computer, according to the obtained pressure value and relative displacement distance, the hardness, elastic modulus and other mechanical performance parameters of the measured material are calculated through the pre-set algorithm and formula, and are displayed on the display screen of the analyzer.

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

[0043] For the embodiments of the present application, it is also necessary to explain that, in the case of no conflict, the embodiments and the features in the embodiments of the present application can be combined with each other to obtain new embodiments.

[0044] The above is only the preferred embodiment of the present application, and does not limit the present application in any form, and the protection scope of the present application should be subject to the protection scope of the claims. Although the present application has been disclosed as above with the preferred embodiment, it is not intended to limit the present application, and any skilled person in the art can make some changes or modifications to the equivalent embodiments with the disclosed technical content without departing from the technical solution range of the present application, but any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application still belong to the technical solution range of the present application.

Claims

1. A portable indentation analyser characterised in that, The utility model relates to a kind of displacement gauge assembly and pressure sensor, including shell (100), pressurizing assembly (200), displacement gauge assembly (300), drive assembly (400) and pressure sensor (500);The pressurizing assembly (200) and the displacement gauge assembly (300) are slidably connected with the shell (100), and the drive assembly (400) is used to drive the pressurizing assembly (200) and the displacement gauge assembly (300) sliding;The displacement gauge assembly (300) is slidably connected with the pressurizing assembly (200), and the end of the displacement gauge assembly (300) towards measured surface extends to the outside of the pressurizing assembly (200);During the drive assembly (400) drives the pressurizing assembly (200) and the displacement gauge assembly (300) to slide towards measured surface, after the displacement gauge assembly (300) contacts measured surface, relative displacement is generated between the displacement gauge assembly (300) and the pressurizing assembly (200), and the displacement gauge assembly (300) is used to obtain the relative displacement distance between the pressurizing assembly (200) and the displacement gauge assembly (300);The pressure sensor (500) is used to obtain the pressure value that the pressurizing assembly (200) receives.

2. The portable indentation analyser of claim 1, wherein, The displacement gauge assembly (300) includes slider (310), probe (320), grating ruler (330) and grating ruler reading head (340);The slider (310) is slidably connected with the pressurizing assembly (200);The probe (320) is fixedly connected with the slider (310), and the end of the probe (320) towards measured surface extends to the outside of the pressurizing assembly (200);The grating ruler (330) is fixed on the pressurizing assembly (200), and the grating ruler reading head (340) is fixedly connected with the slider (310);When the slider (310) and the grating ruler reading head (340) slide relative to the pressurizing assembly (200) and the grating ruler (330), the reading of the grating ruler (330) is read by the grating ruler reading head (340), and the relative displacement distance between the pressurizing assembly (200) and the displacement gauge assembly (300) is obtained.

3. The portable indentation analyser of claim 2, wherein, Elastic component (600) is arranged between the slider (310) and the shell (100), and the elastic component (600) drives the end of the probe (320) towards measured surface to extend to the outside of the pressurizing assembly (200).

4. The portable indentation analyser of claim 1, wherein, The drive assembly (400) includes motor (410) and camshaft (420), and the camshaft (420) is fixedly connected with the output shaft of the motor (410);Needle bearing (700) is arranged in the pressurizing assembly (200), and the camshaft (420) is connected with the needle bearing (700) in cooperation.

5. The portable indentation analyser of claim 4, wherein, The drive assembly (400) further includes hall sensor (430), for inducting the camshaft (420).

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

7. The portable indentation analyser of claim 6, wherein, The sliding sleeve (210) comprises a rack (211) and a rack cover (212); the needle bearing (700) is arranged in the rack (211); the rack cover (212) is fixedly connected to the rack (211); and the pressure sensor (500) is arranged at the bottom of the rack (211).

8. The portable indentation analyser of claim 7, wherein, Symmetrical springs (213) are arranged between the rack cover (212) and the rack (211).

9. The portable indentation analyser of claim 6, wherein, The pressure rod sleeve (220) comprises 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); the pressure head (230) is fixedly connected to the lower end of the first pressure rod (221); a sliding groove is arranged in the first pressure rod (221); the displacement gauge assembly (300) is slidingly connected in the sliding groove; and a groove is arranged at the upper end of the second pressure rod (222) for placing the pressure sensor (500).

10. The portable indentation analyser of claim 9, wherein, Positioning pins (223) are arranged between the first pressure rod (221) and the second pressure rod (222).

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