Hardmeter with measuring head convenient to replace

Abstract

The utility model discloses a durometer with a measuring head convenient to replace, which comprises a durometer body, the durometer body comprises two sections of parallel shells connected with each other, an objective table is arranged above the shell below the durometer body, a measuring head body is arranged below the shell above the durometer body, and the measuring head body is connected with the objective table. A display screen is arranged on the surface of the durometer body, a connecting quick-release structure is arranged on the surface of the measuring head body, and the connecting quick-release structure is provided with a connecting cylinder and a cylinder, so that the measuring head body can be quickly disassembled and connected. According to the durometer with the measuring head convenient to replace, the connecting cylinder is arranged on the surface of the durometer body, the cylinder is installed on the inner surface of the connecting cylinder in a threaded mode, the rotating clamping block is arranged on the surface of the cylinder, and the measuring head body can be inserted into an opening in the lower portion of the cylinder and is connected to the inner surface of the connecting cylinder along with the cylinder in a threaded mode; the measuring head body can be quickly replaced only by synchronously detaching the measuring head body and the cylinder from the connecting cylinder.

Description

Technical Field

[0001] The utility model relates to the technical field of hardness testers, and specifically relates to a hardness tester which is convenient for replacing a measuring head. Background Technique

[0002] A hardness tester refers to a hardness testing instrument. Hardness represents the ability of a material to resist the indentation of a hard object into its surface. It is one of the important performance indicators of metal materials. Generally, the higher the hardness, the better the wear resistance. The performance of metal materials can be evaluated by using a hardness tester. The hardness tester pre-presses the surface of the object to be detected by the measuring head under a certain load, and then calculates the hardness value through the depth of the groove generated by the plastic deformation of the material surface.

[0003] With the increase of the service time, the surface of the measuring head will be worn. In order to ensure the detection accuracy, it is necessary to replace the measuring head. At present, the hardness tester and the measuring head are usually fixedly connected by bolts, which causes inconvenience in the process of replacing the measuring head. Content of the Utility Model

[0004] The purpose of the utility model is to provide a hardness tester which is convenient for replacing a measuring head. The device is provided with a cylinder connected to the measuring head and a connecting cylinder connected to the hardness tester, and the connection and disassembly of the cylinder and the connecting cylinder are used to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A hardness tester which is convenient for replacing a measuring head, including a hardness tester body. The hardness tester body is a parallel housing connected at both ends. A loading platform is arranged above the housing below the hardness tester body, and a measuring head body is arranged below the housing above the hardness tester body. A display screen is arranged on the surface of the hardness tester body, and a connection quick-release structure is arranged on the surface of the measuring head body. The connection quick-release structure is provided with a connecting cylinder and a cylinder to realize the quick disassembly and connection process of the measuring head body.

[0006] Preferably, the connection quick-release structure includes a connecting cylinder. The connecting cylinder is a cylindrical structure with an open bottom, and the upper surface of the connecting cylinder is fixedly installed on the surface of the housing above the hardness tester body. Threads are arranged on the inner surface of the connecting cylinder, and a cylinder is threadedly connected to the inner surface of the connecting cylinder. The bottom surface of the cylinder is open, and the thread height on the outer surface of the cylinder is one-third of the height of the cylinder.

[0007] By adopting the above technical solution, the cylinder can be fixed to the inner surface of the connecting cylinder by using the threads on the outer surface of the cylinder.

[0008] Preferably, long strip-shaped grooves are symmetrically arranged on the outer surface of the cylinder. The groove of the cylinder penetrates through the surface of the cylinder, and a clamping block is rotatably connected to the inner wall of the groove of the cylinder. A trapezoidal convex block is arranged on the surface of the clamping block.

[0009] With the above technical solution, the rotating clamping block can tightly clamp the measuring head body and the cylinder together.

[0010] Preferably, a height adjustment structure is provided on the surface of the loading platform. The height adjustment structure is composed of an electric push rod and a support cylinder to adjust the height of the loading platform.

[0011] With the above technical solution, the height of the loading platform can be adjusted by using the height adjustment structure.

[0012] Preferably, the height adjustment structure includes an electric push rod. The electric push rod is fixedly installed inside the housing below the hardness tester body, and the output end of the electric push rod penetrates through the surface of the hardness tester body and is connected with a connecting column. The outer surface of the connecting column is threadedly connected with a support cylinder.

[0013] With the above technical solution, the electric push rod can be used to drive the large-range elevation of the loading platform.

[0014] Preferably, the upper surface of the support cylinder is rotatably connected to the lower surface of the loading platform, and a plurality of handles are annularly arranged on the outer surface of the support cylinder.

[0015] With the above technical solution, the handle can drive the support cylinder to move on the outer surface of the connecting column, thereby driving a small-range height change of the loading platform.

[0016] Preferably, the loading platform is of a cylindrical structure, and a baffle is threadedly connected to the outer surface of the loading platform. The baffle is a ring structure that penetrates up and down.

[0017] With the above technical solution, the raised baffle can prevent the object to be measured from falling off the loading platform.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows: The hardness tester that facilitates the replacement of the measuring head:

[0019] 1. A connecting cylinder is provided on the surface of the hardness tester body of the present device. The inner surface of the connecting cylinder is threadedly installed with a cylinder. The surface of the cylinder is provided with a rotating clamping block. The measuring head body can be inserted into the open lower part of the cylinder and is threadedly connected to the inner surface of the connecting cylinder along with the cylinder. When replacing the measuring head body, only the measuring head body and the cylinder need to be synchronously disassembled from the connecting cylinder, and the measuring head body can be quickly replaced;

[0020] 2. The lower surface of the loading platform of the present device is rotatably connected to a support cylinder. The support cylinder is threadedly connected to a connecting column, and the connecting column is raised and lowered by an electric push rod. The electric push rod can be used to drive the connecting column to move, thereby realizing the large-range elevation of the loading platform. The height of the loading platform can be slightly adjusted by using the threadedly connected connecting column and support cylinder;

[0021] 3. A baffle is threadedly installed on the outer surface of the stage of this device. The raised baffle can intercept the periphery of the stage to prevent the object to be measured from falling off the surface of the stage during the measurement process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a front view structural schematic diagram of the present utility model;

[0023] Figure 2 is a front sectional structural schematic diagram of the present utility model;

[0024] Figure 3 is a bottom view structural schematic diagram of the support cylinder and the stage of the present utility model;

[0025] Figure 4 is a front sectional structural schematic diagram of the support cylinder of the present utility model;

[0026] Figure 5 is a front sectional structural schematic diagram of the connecting cylinder of the present utility model;

[0027] Figure 6 is a front sectional structural schematic diagram of the cylinder of the present utility model.

[0028] In the figure: 1, hardness tester body; 2, stage; 3, measuring head body; 4, display screen; 5, connecting cylinder; 6, cylinder; 7, clamping block; 8, electric push rod; 9, connecting column; 10, support cylinder; 11, handle; 12, baffle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0030] Please refer to Figure 1-6 , the present utility model provides a technical solution: a hardness tester facilitating the replacement of the measuring head, including a hardness tester body 1, a stage 2, a measuring head body 3, a display screen 4, a connecting cylinder 5, a cylinder 6, a clamping block 7, an electric push rod 8, a connecting column 9, a support cylinder 10, a handle 11, and a baffle 12.

[0031] The hardness tester body 1 is a parallel housing connected in two sections. A loading platform 2 is provided above the housing below the hardness tester body 1, and a measuring head body 3 is provided below the housing above the hardness tester body 1. A display screen 4 is provided on the surface of the hardness tester body 1. A connection quick-release structure is provided on the surface of the measuring head body 3. The connection quick-release structure is provided with a connection cylinder 5 and a cylinder 6 to achieve the quick disassembly and connection process of the measuring head body 3. The connection quick-release structure includes a connection cylinder 5. The connection cylinder 5 is a cylindrical structure with an open bottom, and the upper surface of the connection cylinder 5 is fixedly installed on the surface of the housing above the hardness tester body 1. Threads are provided on the inner surface of the connection cylinder 5, and a cylinder 6 is threadedly connected to the inner surface of the connection cylinder 5. The bottom surface of the cylinder 6 is open, and the thread height on the outer surface of the cylinder 6 is one-third of the height of the cylinder 6. Longitudinal grooves are symmetrically provided on the outer surface of the cylinder 6. The groove of the cylinder 6 penetrates the surface of the cylinder 6, and a clamping block 7 is rotatably connected to the inner wall of the groove of the cylinder 6. A trapezoidal convex block is provided on the surface of the clamping block 7;

[0032] As Figure 1 , Figure 5 and Figure 6 shown, when using this device, place the object to be measured on the surface of the loading platform 2. Use the movement of the loading platform 2 to make the measuring head body 3 generate a force on the surface of the object to be measured, so as to realize the hardness measurement of the object to be measured. The measurement result is displayed on the surface of the display screen 4. When the measuring head body 3 is worn after long-term use of the device, the measuring head body 3 needs to be replaced. At this time, hold the cylinder 6 and rotate the cylinder 6 so that the cylinder 6 rotates from the inner surface of the connection cylinder 5, separating the connection cylinder 5 from the cylinder 6. At this time, the cylinder 6 drives the measuring head body 3 on the inner surface to synchronously separate from the connection cylinder 5. Pull out the measuring head body 3 from the open bottom of the cylinder 6. Insert the newly replaced measuring head body 3 into the open bottom of the cylinder 6. Use the friction force on the inner surface of the cylinder 6 to clamp the measuring head body 3. Hold the cylinder 6 and the measuring head body 3, and thread the cylinder 6 and the connection cylinder 5 together again. When the cylinder 6 enters the inner surface of the connection cylinder 5 upward, the inner wall of the connection cylinder 5 generates a force on the convex block on the surface of the clamping block 7, thereby pushing the clamping block 7 inward to rotate. The rotating clamping block 7 clamps the measuring head body 3 inside the cylinder 6, making the measuring head body 3 closely fit with the cylinder 6. At this time, the installation of the measuring head body 3 is completed.

[0033] The surface of the stage 2 is provided with a height adjustment structure. The height adjustment structure is provided with an electric push rod 8 and a support cylinder 10 to adjust the height of the stage 2. The height adjustment structure includes an electric push rod 8. The electric push rod 8 is fixedly installed inside the housing below the hardness tester body 1, and the output end of the electric push rod 8 penetrates through the surface of the hardness tester body 1 and is connected with a connecting column 9. The outer surface of the connecting column 9 is threadedly connected with a support cylinder 10. The upper surface of the support cylinder 10 is rotatably connected to the lower surface of the stage 2. A plurality of handles 11 are annularly arranged on the outer surface of the support cylinder 10. The stage 2 is of a cylindrical structure, and a baffle 12 is threadedly connected to the outer surface of the stage 2. The baffle 12 is a circular ring structure that penetrates up and down;

[0034] As Figure 2 , Figure 3 and Figure 4 shown, place the object to be measured on the surface of the stage 2. When the object to be measured has an irregular shape and is likely to fall, rotate the baffle 12. The baffle 12 rotates on the outer surface of the stage 2 and rises to intercept the outer surface of the stage 2 to prevent the object to be measured from falling off the stage 2. Start the electric push rod 8. The electric push rod 8 drives the connecting column 9 to rise. The connecting column 9 drives the support cylinder 10 and the stage 2 to rise, thereby driving the stage 2 to rise significantly. When a small-range adjustment of the height of the stage 2 is required, hold the handle 11 and use the handle 11 to drive the support cylinder 10 to rotate. The support cylinder 10 rotates on the outer surface of the connecting column 9, thereby driving the stage 2 to make a small-range height adjustment.

[0035] Working principle: When using this hardness tester with a measurement head that is easy to replace, place the object to be measured on the surface of the stage 2. Rotate the baffle 12. The baffle 12 rises on the outer surface of the stage 2 to prevent the object to be measured from falling. Use the electric push rod 8 to drive the connecting column 9 to rise, thereby driving the support cylinder 10 and the stage 2 to rise to achieve a significant rise of the stage 2. Use the handle 11 held by hand to drive the support cylinder 10 to rotate to achieve a small rise of the stage 2. When the measurement head body 3 needs to be replaced, rotate the cylinder 6 to separate the connecting cylinder 5 from the cylinder 6. The cylinder 6 drives the measurement head body 3 to separate from the device. Insert the newly replaced measurement head body 3 into the open end below the cylinder 6, and reconnect the cylinder 6 and the connecting cylinder 5 by threading. The inner wall of the connecting cylinder 5 exerts a force on the convex block on the surface of the clamping block 7. Use the clamping block 7 to clamp the measurement head body 3 inside the cylinder 6, so that the measurement head body 3 fits tightly with the cylinder 6, increasing the overall practicality.

[0036] Although the embodiments of the present invention have been shown and described, 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 facilitating the replacement of a measuring head, comprising a hardness tester body (1). The hardness tester body (1) is a parallel housing connected in two sections. A loading table (2) is arranged above the housing below the hardness tester body (1), and a measuring head body (3) is arranged below the housing above the hardness tester body (1). A display screen (4) is arranged on the surface of the hardness tester body (1), characterized in that: A connection quick-release structure is provided on the surface of the measuring head body (3). The connection quick-release structure is provided with a connection cylinder (5) and a cylinder (6) to realize the quick disassembly and connection process of the measuring head body (3).

2. The hardness tester for facilitating the replacement of a measuring head according to claim 1, wherein: The connection quick-release structure includes a connection cylinder (5). The connection cylinder (5) is a cylindrical structure with an open bottom, and the upper surface of the connection cylinder (5) is fixedly installed on the surface of the housing above the hardness tester body (1). The inner surface of the connection cylinder (5) is provided with threads, and a cylinder (6) is threadedly connected to the inner surface of the connection cylinder (5). The lower surface of the cylinder (6) is open, and the thread height on the outer surface of the cylinder (6) is one-third of the height of the cylinder (6).

3. The hardness tester for facilitating the replacement of a measuring head according to claim 2, wherein: Longitudinal grooves are symmetrically provided on the outer surface of the cylinder (6). The groove of the cylinder (6) penetrates the surface of the cylinder (6), and a clamping block (7) is rotatably connected to the inner wall of the groove of the cylinder (6). A trapezoidal convex block is provided on the surface of the clamping block (7).

4. The hardness tester for facilitating the replacement of a measuring head according to claim 1, wherein: A height adjustment structure is provided on the surface of the stage (2). The height adjustment structure is provided with an electric push rod (8) and a support cylinder (10) to adjust the height of the stage (2).

5. The hardness tester for facilitating the replacement of a measuring head according to claim 4, wherein: The height adjustment structure includes an electric push rod (8). The electric push rod (8) is fixedly installed inside the housing below the hardness tester body (1), and the output end of the electric push rod (8) penetrates the surface of the hardness tester body (1) and is connected to a connection column (9). A support cylinder (10) is threadedly connected to the outer surface of the connection column (9).

6. The hardness tester for facilitating the replacement of a measuring head according to claim 5, wherein: The upper surface of the support cylinder (10) is rotatably connected to the lower surface of the stage (2), and a plurality of handles (11) are annularly provided on the outer surface of the support cylinder (10).

7. The hardness tester for facilitating the replacement of a measuring head according to claim 1, characterized in that: The stage (2) is a cylindrical structure, and a baffle (12) is threadedly connected to the outer surface of the stage (2). The baffle (12) is an annular structure that penetrates up and down.

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