Hardmeter capable of digitally displaying readings and converting measurement modes

Abstract

The invention discloses a durometer capable of digitally displaying readings and converting measurement modes, the durometer comprises a durometer main body, the durometer main body comprises a base, one end of the upper surface of the base is fixedly provided with a radial drilling machine through a bolt, and the top end of one side of the radial drilling machine is provided with a horizontal rocker arm; an electric sliding rail is arranged on the surface of the horizontal rocker arm; by designing the convenient conversion detection mechanism, when a large workpiece is subjected to Rockwell hardness and Brinell hardness tests, a knob is directly held by hand to drive an adjusting screw rod to rotate so as to rotate the Rockwell hardness tester and the Brinell hardness tester, and the Rockwell hardness and Brinell hardness conversion test operation of the large workpiece is respectively carried out through the Rockwell hardness tester and the Brinell hardness tester; the illuminating lamp is turned on to ensure proper brightness and clear imaging, and the imaging received by the digital display screen after imaging is convenient to convert and test, so that the convenience of converting and adjusting two hardness detections when the hardness tester main body is used is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of hardness testers, and particularly relates to a hardness tester that can display digital readings and can switch measurement modes. Background Art

[0002] In mechanical manufacturing production, the vast majority of enterprises and customers need to measure the Brinell hardness value and Rockwell hardness value of large workpieces according to engineering technical requirements. Usually, a hardness tester is installed for hardness testing, and the existing hardness tester is a device used for testing the Brinell hardness value and Rockwell hardness value of large workpieces.

[0003] After retrieval, the patent document with the application number CN201420486862.5 discloses a cantilever type hardness tester. By improving the Z3080 type radial drilling machine and replacing the drilling bit under the cantilever with a UX50 type Brinell hardness tester, a movable cantilever type hardness tester is made. The specific composition of the cantilever type hardness tester is described in detail in this patent. Among them, a push rod is used to connect the drill rod of the radial drilling machine and the head of the hardness tester, realizing a hardness tester for large industrial products that can be adjusted in all directions.

[0004] A patent document of a cantilever type hardness tester with the application number CN201921597078.0 adjusts for the problem of unstable clamping faced by different workpieces. Two fixing plates are installed at the front end of the base equipped with a radial drilling machine, which can clamp the workpiece and ensure the accuracy of the measured value of the workpiece when performing hardness measurement.

[0005] In summary, in mechanical manufacturing production, the vast majority of enterprises and customers need to measure the Brinell hardness value of large workpieces according to engineering technical requirements, which makes the use of Brinell hardness testers more extensive; however, there are still a small number of enterprises and customers who require the measurement of the Rockwell hardness of workpieces, resulting in the neglect of Rockwell hardness testing. Many enterprises do not have relevant equipment for measuring the Rockwell hardness of large workpieces. Therefore, a single cantilever type Brinell hardness tester cannot fully meet the market demand, affecting the convenience of switching and adjusting the two hardness detections during the use of the hardness tester. For this reason, the present invention proposes a hardness tester that can display digital readings and can switch measurement modes. Summary of the Invention

[0006] The object of the present invention is to provide a hardness tester with countable display readings and convertible measurement modes to solve the problem mentioned in the above background technology. In mechanical manufacturing production, the vast majority of enterprises and customers need to measure the Brinell hardness value of large workpieces according to engineering and technical requirements, which makes the use of Brinell hardness testers more extensive. However, there are still a small number of enterprises and customers who require the measurement of the Rockwell hardness of workpieces, resulting in the neglect of Rockwell hardness testing. Many enterprises do not have relevant equipment for measuring the Rockwell hardness of large workpieces. Therefore, a single cantilever Brinell hardness tester cannot fully meet the market demand.

[0007] To achieve the above object, the present invention provides the following technical solution: A hardness tester with countable display readings and convertible measurement modes, including a hardness tester main body. The hardness tester main body includes a base. One end of the upper surface of the base is fixedly installed with a radial drill press through bolts. One side top end of the radial drill press is provided with a horizontal swing arm. The surface of the horizontal swing arm is provided with an electric slide rail. The outer surface of the horizontal swing arm is driven and connected with a drill rod main body through the electric slide rail. The bottom end of the drill rod main body is rotatably connected with a push rod. The hardness tester main body is also provided with:

[0008] A convenient conversion detection mechanism, and the convenient conversion detection mechanism includes three groups of adjustment components arranged at the bottom end of the push rod. The bottom ends of two groups of the adjustment components are both provided with horizontal installation components. The bottom ends of the two groups of horizontal installation components are respectively provided with detection components. One side of the detection component is located at the bottom end of another group of adjustment components and is provided with a magnification imaging component. One side of the magnification imaging component is provided with an illumination component;

[0009] A protection mechanism, and the protection mechanism includes an installation component arranged at the top end of the adjustment component. The bottom end of the installation component is located on the outer surface of the detection component and is provided with a protection component. The outer surface of the protection component is provided with a buffer protection component.

[0010] Preferably, a lead screw rotates inside the radial drill press. The top end of the lead screw is fixedly provided with a forward and reverse motor through bolts at the top end of the radial drill press. A moving slide is arranged on the outer surface of the lead screw. The end of the horizontal swing arm is fixedly connected with the surface of the moving slide through bolts. Control chutes are opened on both sides of the radial drill press, and the side surface of the moving slide is slidably connected with the inside of the control chutes.

[0011] Preferably, the adjustment component includes a three-way adapter fixedly installed at the bottom end of the push rod through bolts. An adjustment screw is threadedly connected inside the three-way adapter. The top end of the adjustment screw is integrally provided with a knob on the upper surface of the three-way adapter.

[0012] Preferably, the horizontal installation component includes connection frames respectively and fixedly installed at the bottom ends of two adjusting screws. A pressure gauge is fixed at the middle position inside the connection frame. A universal level is arranged on the side of the pressure gauge. A manual pressure bar is fixedly installed on one side of the connection frame through screws.

[0013] Preferably, the detection component includes a Rockwell hardness tester and a Brinell hardness tester respectively and fixedly installed at the bottom ends of two connection frames.

[0014] Preferably, the magnification imaging component includes a fixed frame fixedly installed at the bottom end of the third adjusting screw through bolts. An imaging camera is fixedly installed at the bottom end inside the fixed frame. A magnifying glass is fixed on the lower surface of the imaging camera. A digital display screen is fixed on one side of the drill rod body. Both the Rockwell hardness tester and the Brinell hardness tester are electrically connected to the imaging camera.

[0015] Preferably, the lighting component includes a lighting lamp fixedly installed at the bottom end of the three-way adapter through a flexible rod. The lighting lamp is electrically connected to the power supply through a wire.

[0016] Preferably, the installation component includes an external thread top plate sleeved on the outer surface of the top end of the three-way adapter. A fixing ring is integrally arranged on the inner surface of the external thread top plate. The fixing ring and the outer surface of the top end of the three-way adapter are fixed through installation bolts.

[0017] Preferably, the protection component includes a protective cover arranged at the bottom end of the external thread top plate. A protective sponge is fixedly adhered to the bottom end inside the protective cover. An internal thread structure is opened at the edge of the top end inside the protective cover. The internal thread structure is threadedly connected to the outer surface edge of the external thread top plate.

[0018] Preferably, the buffer protection component includes a rubber protection cylinder fixedly adhered to the outer surface of the protective cover. The rubber protection cylinder is embedded inside the protective cover.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] By designing a convenient conversion detection mechanism, when performing Rockwell hardness and Brinell hardness tests on large workpieces, the operator can directly hold the knob to drive the rotation of the adjusting screw to rotate the Rockwell hardness tester and the Brinell hardness tester. And through the Rockwell hardness tester and the Brinell hardness tester respectively, the conversion tests of the Rockwell hardness and Brinell hardness of large workpieces are carried out. Turn on the lighting lamp to ensure appropriate brightness and clear imaging. After imaging, the imaging received by the digital display screen is convenient for conversion testing, improving the convenience of converting and adjusting the two hardness detections when the hardness tester main body is in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the present invention;

[0022] Figure 2 For the present invention Figure 1 Schematic enlarged view of part B in the present invention;

[0023] Figure 3 Schematic structural view of the drill pipe body, three-way adapter and digital display screen lighting lamp of the present invention;

[0024] Figure 4 For the present invention Figure 3 Schematic enlarged view of part C in the present invention;

[0025] Figure 5 Schematic three-dimensional structural view of the three-way adapter, Rockwell hardness tester and Brinell hardness tester of the present invention;

[0026] Figure 6 Schematic partial sectional view of the three-way adapter, Rockwell hardness tester and Brinell hardness tester of the present invention;

[0027] Figure 7 For the present invention Figure 1 Schematic enlarged view of part A in the present invention;

[0028] Figure 8 Schematic structural view of the three-way adapter and the opened state of the protective cover of the present invention;

[0029] Figure 9 Schematic sectional view of the external thread top plate, protective cover and protective sponge of the present invention;

[0030] In the figure: 100, hardness tester main body; 101, base; 1011, external thread top plate; 1012, fixing ring; 1013, rubber protection cylinder; 1014, protective cover; 1015, internal thread structure; 1016, protective sponge; 102, radial drill press; 1021, forward and reverse motor; 1022, lead screw; 1023, moving slide; 1024, control chute; 103, electric slide rail; 104, horizontal swing arm; 105, drill pipe body; 106, fixing frame; 1061, imaging camera; 1062, magnifying glass; 1063, lighting lamp; 1064, digital display screen; 107, ejector rod; 1071, three-way adapter; 1072, knob; 1073, adjusting screw; 1074, connecting frame; 1075, Rockwell hardness tester; 1076, Brinell hardness tester; 1077, manual pressure rod; 1078, pressure gauge; 1079, universal level. Detailed implementation manners

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figures 1 to 9 , the present invention provides a technical solution: a hardness tester with countable and displayable readings and convertible measurement modes, including a hardness tester main body 100. The hardness tester main body 100 includes a base 101. One end of the upper surface of the base 101 is fixedly installed with a radial drilling machine 102 through bolts. One side top end of the radial drilling machine 102 is provided with a horizontal swing arm 104. The surface of the horizontal swing arm 104 is provided with an electric slide rail 103. The outer surface of the horizontal swing arm 104 is driven and connected with a drill rod main body 105 through the electric slide rail 103. The bottom end of the drill rod main body 105 is rotatably connected with a ejector rod 107;

[0033] A lead screw 1022 rotates inside the radial drilling machine 102. The top end of the lead screw 1022 is fixedly provided with a forward and reverse motor 1021 at the top end of the radial drilling machine 102. A moving slide block 1023 is arranged on the outer surface of the lead screw 1022. The end of the horizontal swing arm 104 is fixedly connected with the surface of the moving slide block 1023 through bolts. Control chutes 1024 are opened on both sides of the radial drilling machine 102, and the side surface of the moving slide block 1023 is slidably connected with the inside of the control chute 1024. The hardness tester main body 100 is further provided with:

[0034] A convenient conversion detection mechanism, and the convenient conversion detection mechanism includes three groups of adjustment components arranged at the bottom end of the ejector rod 107. The bottom ends of two groups of adjustment components are respectively provided with horizontal installation components. The bottom ends of the two groups of horizontal installation components are respectively provided with detection components. One side of the detection component is provided with a magnifying imaging component at the bottom end of another group of adjustment components. One side of the magnifying imaging component is provided with an illumination component, which can facilitate the conversion test operation between the Rockwell hardness tester 1075 and the Brinell hardness tester 1076 when the hardness tester main body 100 is testing. Through the hardness tester main body 100, it is convenient to perform conversion tests between Rockwell hardness and Brinell hardness on the large workpiece arm. The conversion test is convenient, which improves the convenience of the hardness tester main body 100 in converting and adjusting the two hardness detections during use.

[0035] For convenient conversion and use through the adjustment component, in this embodiment, preferably, the adjustment component includes a three-way adapter 1071 fixedly installed at the bottom end of the ejector rod 107 by bolts. An adjustment screw 1073 is threadedly connected inside the three-way adapter 1071. At the top end of the adjustment screw 1073, a knob 1072 is integrally provided on the upper surface of the three-way adapter 1071. The knob 1072 can be held to rotate the adjustment screw 1073 to convert and adjust the use of the Rockwell hardness tester 1075 and the Brinell hardness tester 1076, and at the same time, the imaging camera 1061 is adjusted again for use.

[0036] For convenient installation, conversion and testing of the Rockwell hardness tester 1075 and the Brinell hardness tester 1076 through the horizontal installation component, in this embodiment, preferably, the horizontal installation component includes connection frames 1074 respectively fixedly installed at the bottom ends of the two adjustment screws 1073. A pressure gauge 1078 is fixed at the middle position inside the connection frame 1074. A universal level 1079 is arranged on the side of the pressure gauge 1078. A manual pressure rod 1077 is fixedly installed on one side of the connection frame 1074 by screws. When converting and testing the Rockwell hardness tester 1075 and the Brinell hardness tester 1076, the universal level 1079 can be used to horizontally adjust and test them, and the test values are displayed by the pressure gauge 1078 and fed back to the digital display screen 1064 for reading.

[0037] For convenient Rockwell hardness and Brinell hardness testing of large workpieces through the detection component, in this embodiment, preferably, the detection component includes the Rockwell hardness tester 1075 and the Brinell hardness tester 1076 respectively fixedly installed at the bottom ends of the two connection frames 1074. When used on the side of a large workpiece, the Rockwell hardness tester 1075 and the Brinell hardness tester 1076 can be conveniently converted for testing.

[0038] For accurate magnified imaging and clear observation during testing through the magnifying imaging component, in this embodiment, preferably, the magnifying imaging component includes a fixed frame 106 fixedly installed at the bottom end of the third adjustment screw 1073 by bolts. An imaging camera 1061 is fixedly installed at the bottom end inside the fixed frame 106. A magnifying glass 1062 is fixed on the lower surface of the imaging camera 1061. A digital display screen 1064 is fixed on one side of the drill rod main body 105. Both the Rockwell hardness tester 1075 and the Brinell hardness tester 1076 are electrically connected to the imaging camera 1061. After the hardness test, when the imaging camera 1061 takes pictures, it can be magnified by the magnifying glass 1062, and when magnifying and imaging, it can be observed and read again by the digital display screen 1064.

[0039] In order to facilitate clear imaging processing during testing through the lighting component, in this embodiment, preferably, the lighting component includes a lighting lamp 1063 fixedly installed at the bottom end of the three-way adapter 1071 through a flexible rod, and the lighting lamp 1063 is electrically connected to the power supply through a wire. The lighting lamp 1063 can be turned on when the test is carried out in a relatively dark position in the workshop to ensure appropriate brightness for clear imaging.

[0040] A protection mechanism, and the protection mechanism includes a mounting component provided at the top end of the adjustment component. At the bottom end of the mounting component, a protection component is provided on the outer surface of the detection component, and a buffer protection component is provided on the outer surface of the protection component. After the test, the Rockwell hardness tester 1075 and the Brinell hardness tester 1076 can be protected by the protection mechanism, not easily exposed to the outside, used for safety protection, and accurately tested again.

[0041] In order to facilitate the rotary installation of the protective cover 1014 through the mounting component for convenient installation and protection, in this embodiment, preferably, the mounting component includes an external thread top plate 1011 sleeved on the outer surface of the top end of the three-way adapter 1071. An integral fixing ring 1012 is provided on the inner surface of the external thread top plate 1011. The fixing ring 1012 is fixed to the outer surface of the top end of the three-way adapter 1071 through mounting bolts. By fixing the external thread top plate 1011 through the fixing ring 1012, it is convenient to rotate and install the protective cover 1014 after the external thread top plate 1011 is fixedly installed, facilitating installation and protection.

[0042] In order to facilitate the threaded installation and protection of the protective cover 1014 through the protection component, in this embodiment, preferably, the protection component includes the protective cover 1014 provided at the bottom end of the external thread top plate 1011. A protective sponge 1016 is adhesively fixed to the inner bottom end of the protective cover 1014. An internal thread structure 1015 is provided at the edge of the inner top end of the protective cover 1014, and the internal thread structure 1015 is threadedly connected to the outer surface edge of the external thread top plate 1011. The protective cover 1014 can be rotationally installed through the threaded connection between the internal thread structure 1015 and the outer surface of the external thread top plate 1011 until the protective cover 1014 is installed and contacts the surface of the protective sponge 1016 for protection. After the test, it is not easily exposed to the outside and is not easily damaged by touching.

[0043] In order to facilitate the buffer protection of the outer surface of the protective cover 1014 through the buffer protection component and facilitate buffering and reducing impact, in this embodiment, preferably, the buffer protection component includes a rubber protection cylinder 1013 adhesively fixed to the outer surface of the protective cover 1014, and the rubber protection cylinder 1013 is embedded in the protective cover 1014. While the protective cover 1014 provides protection, the rubber protection cylinder 1013 can buffer and protect the outer surface of the protective cover 1014, facilitating protection.

[0044] Working principle and usage process of the present invention: For this hardness tester with countable display readings and convertible measurement modes, during use, first, the hardness tester main body 100 is stably placed at the position of use by contacting the bottom surface through the base 101. When the hardness tester main body 100 is stably placed and testing is required, the forward and reverse motor 1021 is operated to drive the lead screw 1022 to rotate. The rotation of the lead screw 1022 drives the moving slide 1023 to move on the outer surface of the lead screw 1022. When the moving slide 1023 moves, the end is limited and slides inside the control chute 1024 until the moving slide 1023 drives the horizontal arm 104 to be adjusted to a certain height. Then, the drill rod main body 105 is horizontally adjusted to a certain position through the movement of the electric slide rail 103, so as to facilitate the adjustment of the drill rod main body 105 to the position of use;

[0045] During detection, the rough-machined five-chamber fracturing valve box workpiece is horizontally placed on the base 101, ensuring that the surface to be tested is facing upwards horizontally, corresponding to the lower surfaces of the Rockwell hardness tester 1075 and the Brinell hardness tester 1076. At this time, when Rockwell hardness testing is required, hold the knob 1072 and drive the adjusting screw 1073 to rotate to lower the Rockwell hardness tester 1075 to the testing height. Hold the manual pressure rod 1077 and press the Rockwell hardness tester 1075 to contact the surface to be tested at a position 5 - 10 mm above. Keep the load applied for 5 seconds. Through the control of the universal level 1079, ensure that the Rockwell hardness tester 1075 is not tilted, and the pressure is displayed by the pressure gauge 1078 during pressing;

[0046] Secondly, lift the Rockwell hardness tester 1075, and adjust the imaging camera 1061 to an appropriate height through the rotating knob 1072 and the adjusting screw 1073 through the fixed frame 106. Turn on the lighting lamp 1063 to ensure appropriate brightness and clear imaging. After imaging, measure the diameter of the Rockwell hardness indentation as 3.10 mm through the imaging received by the digital display screen 1064. According to the Rockwell hardness value table, determine that the Rockwell hardness of the rough-machined five-chamber fracturing valve box workpiece is 41 HRC;

[0047] Once again, lift and place the Rockwell hardness tester 1075, and convert it to the Brinell hardness tester 1076 for testing. Perform the same operation to lower the Brinell hardness tester 1076 for Brinell hardness detection. After testing, perform the same operation to measure the diameter of the Brinell hardness indentation as 0.84 mm through the imaging received by the digital display screen 1064. According to the Brinell hardness value table, determine that the Brinell hardness of the rough-machined five-chamber fracturing valve box workpiece is 327 HBW. Thus, it is convenient to perform conversion testing between Rockwell hardness and Brinell hardness on large workpiece arms through the hardness tester main body 100. The conversion testing is convenient, which improves the convenience of converting and adjusting the two hardness detections when the hardness tester main body 100 is in use;

[0048] Then, when the hardness tester main body 100 is placed without use, fix the external thread top disc 1011 at the top of the three-way adapter 1071, and fix and install the protective cover 1014 on the outer surface of the three-way adapter 1071 through the threaded connection between the internal thread structure 1015 and the thread on the outer surface of the external thread top disc 1011. After installation, make the bottoms of the Rockwell hardness tester 1075 and the Brinell hardness tester 1076 contact the inner surface of the protection sponge 1016, so as to facilitate the fixation of the Rockwell hardness tester 1075 and the Brinell hardness tester 1076 after the protective cover 1014 is screwed and rotated. Thus, it is not easily damaged by being touched when exposed to the outside during placement after use, and when touching the outer surface of the protective cover 1014, it contacts the rubber protection cylinder 1013 for buffering to reduce the impact, which is convenient for protection during use and improves the convenience of protecting the Rockwell hardness tester 1075 and the Brinell hardness tester 1076 when the hardness tester main body 100 is not in use after testing.

[0049] Although the embodiments of the present invention have been shown and described (see the above detailed description), for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hardness tester with countable display readings and convertible measurement modes, comprising a hardness tester main body (100), the hardness tester main body (100) includes a base (101), one end of the upper surface of the base (101) is fixedly installed with a radial drilling machine (102) through bolts, one side top of the radial drilling machine (102) is provided with a horizontal swing arm (104), the surface of the horizontal swing arm (104) is provided with an electric slide rail (103), the outer surface of the horizontal swing arm (104) is drivingly connected with a drill rod main body (105) through the electric slide rail (103), the bottom end of the drill rod main body (105) is rotatably connected with a ejector rod (107), characterized in that: On the hardness tester main body (100), there are also provided: A convenient conversion detection mechanism, and this convenient conversion detection mechanism includes three groups of adjustment components arranged at the bottom end of the ejector rod (107). At the bottom ends of two groups of the adjustment components, horizontal mounting components are provided. At the bottom ends of the two horizontal mounting components, detection components are respectively provided. At the bottom end of another group of adjustment components on one side of the detection component, a magnification imaging component is provided. On one side of the magnification imaging component, a lighting component is provided; A protection mechanism, and this protection mechanism includes a mounting component arranged at the top end of the adjustment component. At the bottom end of the mounting component, a protection component is arranged on the outer surface of the detection component. On the outer surface of the protection component, a buffer protection component is provided.

2. A hardness tester with countable display readings and convertible measurement modes according to claim 1, characterized in that: Inside the radial drilling machine (102), a lead screw (1022) rotates. At the top end of the lead screw (1022) and at the top of the radial drilling machine (102), a forward and reverse motor (1021) is fixed by bolts. On the outer surface of the lead screw (1022), a moving slide (1023) is provided. The end of the horizontal arm (104) is fixed to the surface of the moving slide (1023) by bolts. Control chutes (1024) are provided on both sides of the radial drilling machine (102), and the side surface of the moving slide (1023) is slidably connected to the inside of the control chutes (1024).

3. A hardness tester with countable and displayable readings and convertible measurement modes according to claim 1, characterized in that: The adjustment component includes a three-way adapter (1071) fixedly installed at the bottom end of the ejector rod (107) by bolts. Inside the three-way adapter (1071), an adjustment screw (1073) is threadedly connected. At the top end of the adjustment screw (1073) and on the upper surface of the three-way adapter (1071), a knob (1072) is integrally provided.

4. A hardness tester with countable display readings and convertible measurement modes according to claim 3, characterized in that: The horizontal mounting component includes connection frames (1074) respectively fixedly installed at the bottom ends of the two adjustment screws (1073). In the middle position inside the connection frame (1074), a pressure gauge (1078) is fixed. A universal level (1079) is provided on the side surface of the pressure gauge (1078). On one side of the connection frame (1074), a manual pressure rod (1077) is fixedly installed by screws.

5. A durometer with countable and displayable readings and convertible measurement modes according to claim 4, characterized in that: The detection components include a Rockwell hardness tester (1075) and a Brinell hardness tester (1076) respectively fixedly installed at the bottom ends of the two connection frames (1074).

6. A hardness tester with countable and displayable readings and convertible measurement modes according to claim 5, characterized in that: The magnification imaging component includes a fixed frame (106) fixedly installed at the bottom end of the third adjustment screw (1073) by bolts. At the bottom end inside the fixed frame (106), an imaging camera (1061) is fixedly installed. A magnifying glass (1062) is fixed to the lower surface of the imaging camera (1061). On one side of the drill rod main body (105), a digital display screen (1064) is fixed. Both the Rockwell hardness tester (1075) and the Brinell hardness tester (1076) are electrically connected to the imaging camera (1061).

7. A hardness tester with countable display readings and convertible measurement modes according to claim 3, characterized in that: The lighting component includes a lighting lamp (1063) fixedly installed at the bottom end of the three-way adapter (1071) through a flexible rod. And the lighting lamp (1063) is electrically connected to the power supply through a wire.

8. A hardness tester with countable display readings and convertible measurement modes according to claim 3, characterized in that: The installation component includes an external-thread top plate (1011) sleeved and installed on the outer surface of the top end of the three-way adapter (1071). A fixing ring (1012) is integrally arranged on the inner surface of the external-thread top plate (1011), and the fixing ring (1012) is fixed to the outer surface of the top end of the three-way adapter (1071) by installation bolts.

9. A durometer capable of displaying countable readings and switching measurement modes according to claim 8, characterized in that: The protection component includes a protective cover (1014) arranged at the bottom end of the external-thread top plate (1011). A protective sponge (1016) is adhesively fixed to the bottom end inside the protective cover (1014). An internal-thread structure (1015) is provided at the edge of the top end inside the protective cover (1014), and the internal-thread structure (1015) is in threaded connection with the outer surface edge of the external-thread top plate (1011).

10. A hardness tester with countable and displayable readings and convertible measurement modes according to claim 9, characterized in that: The buffer protection component includes a rubber protection cylinder (1013) adhesively fixed to the outer surface of the protective cover (1014), and the rubber protection cylinder (1013) is embedded inside the protective cover (1014).

Images