Hardness detection device for automobile piston processing

Abstract

The utility model relates to the field of automobile piston detection, in particular to a hardness detection device for automobile piston processing, and adopts the technical scheme that the hardness detection device comprises a sleeve shell and a piston, hydraulic push rods are fixedly mounted at four corners of the bottom surface of the inner wall of the sleeve shell, a detection platform is fixedly mounted at the upper ends of the hydraulic push rods, and a sealed cabin is arranged above the detection platform; the pressure detection device has the advantages that the piston is arranged on the top face of the detection platform, then the pressure plug and the detection platform are driven to seal the upper end and the lower end of the sealed cabin, gasified fuel is guided into the sealed cabin, the pressure detection head is installed at the upper end of the sealed cabin, and the pressure detection head is installed at the lower end of the sealed cabin. And then the gasified fuel in the sealed cabin is ignited to burn the piston in the sealed cabin, and the rotating disc is rotated to drive the pressure detection head to extrude the surface of the piston after the operation is repeated for several times, so that the effects of simulating a high-temperature and high-pressure environment generated when the engine works and testing the surface hardness of the piston under the working condition are achieved.

Description

Technical Field

[0001] The utility model relates to the field of automobile piston detection, and particularly relates to a hardness detection device for automobile piston processing. Background Technique

[0002] The hardness detection device for automobile piston processing is an important step in detecting the quality of pistons. Since the hardness of metals has a corresponding relationship with other mechanical properties, most metal materials can approximately calculate other mechanical properties, such as strength, fatigue, creep, and wear, by measuring hardness.

[0003] The prior art has the following deficiencies: During actual use, automobile pistons are subjected to high temperatures or frequent thermal shocks, which may cause changes in the piston heat treatment layer, resulting in changes in the surface hardness parameters of the pistons. Moreover, the high-temperature and high-pressure environment generated during engine operation may cause chemical reactions and corrosion. Especially in the case of high-performance engines or the use of low-quality fuels, the pistons may be chemically corroded, affecting their surface hardness and overall performance. However, the existing hardness detection devices for automobile piston processing may not consider the influence of high-temperature factors and chemical corrosion factors on the hardness of automobile pistons during measurement. This will lead to a large difference between the actual hardness of the pistons in use and the hardness during measurement, resulting in misjudgment of piston quality. If the hardness of the piston measured by the measuring device under standard conditions is qualified, but the hardness of the piston decreases after high-temperature operation or under the influence of chemical corrosion, the piston may not be able to withstand the expected stress and pressure during use, greatly increasing the risk of damage and failure of piston components.

[0004] Therefore, it is very necessary to invent a hardness detection device for automobile piston processing. Content of the Utility Model

[0005] In order to achieve the above object, the utility model provides the following technical solution: A hardness detection device for automobile piston processing, including a sleeve and a piston. The sleeve is a tubular structure with a sealed bottom, and one side of the sleeve is open. Four corners of the inner bottom surface of the sleeve are fixedly installed with hydraulic push rods, and a detection platform is fixedly installed at the upper ends of the hydraulic push rods. The piston can be installed on the detection platform. A sealed chamber is arranged above the detection platform. A rotating disk is rotatably installed at the upper end of the sleeve. One end of the rotating disk is installed with a pressure detection head, and the other end is installed with a pressure plug. The pressure plug and the detection platform can hermetically seal the upper and lower ends of the sealed chamber, and vaporized fuel can be introduced into the sealed chamber.

[0006] Preferably, hydraulic rods are fixedly installed at both the upper and lower ends of the rotating disk. The hydraulic rod at one end of the rotating disk is fixedly connected to the pressure plug, and the hydraulic rod at the other end of the rotating disk is fixedly connected to the pressure detection head.

[0007] Preferably, convex plates are provided on both sides of the upper end of the housing, and a rotating shaft is rotatably installed between the convex plates at the upper end of the housing. The rotating shaft penetrates through the middle of the rotating disk and is fixedly connected to the rotating disk.

[0008] Preferably, a motor is fixedly installed at one end of the rotating shaft, and the motor can drive the rotating shaft and the rotating disk to rotate.

[0009] Preferably, air inlet ducts are fixedly connected to both sides of the sealed chamber. One end of the air inlet duct away from the sealed chamber penetrates to the outside of the housing and is connected to the fuel tank.

[0010] Preferably, a spark plug is fixedly installed on the bottom surface of the detection platform, and the two electrodes of the spark plug penetrate upward through the bottom surface of the detection platform to the top surface of the detection platform.

[0011] Preferably, a spark plug is fixedly installed on the bottom surface of the detection platform, and the two electrodes of the spark plug penetrate upward through the bottom surface of the detection platform to the top surface of the detection platform.

[0012] The beneficial effects of the present utility model are as follows: Place the piston on the top surface of the detection platform, then drive the pressure plug to seal the upper and lower ends of the sealed chamber with the detection platform. By introducing vaporized fuel into the sealed chamber, then ignite the vaporized fuel in the sealed chamber to burn the piston in the sealed chamber. After repeating several times, rotate the rotating disk to drive the pressure detection head to squeeze the surface of the piston, so as to achieve the effect of simulating the high-temperature and high-pressure environment generated during the operation of the engine and testing the surface hardness of the piston under working conditions, reducing the difference between the piston hardness in actual use and the hardness during measurement, and reducing the risk of damage and failure of the piston component. Description of the Drawings

[0013] Figure 1 It is the front view of a hardness detection device for automobile piston processing provided by the present utility model;

[0014] Figure 2 It is the cross-sectional view of the housing of a hardness detection device for automobile piston processing provided by the present utility model;

[0015] Figure 3 It is the cross-sectional view of the detection state of a hardness detection device for automobile piston processing provided by the present utility model;

[0016] Figure 4 It is the cross-sectional view of the combustion state of a hardness detection device for automobile piston processing provided by the present utility model;

[0017] Figure 5 It is the schematic diagram of piston installation of a hardness detection device for automobile piston processing provided by the present utility model.

[0018] In the figure: housing 11, detection platform 12, hydraulic push rod 13, sealed chamber 14, intake duct 15, rotating disk 16, rotating shaft 17, motor 18, pressure plug 19, spark plug 20, pressure detection head 21, piston 3. Detailed implementation mode

[0019] The following is a description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0020] Embodiment 1

[0021] As Figures 1-4 shown, a hardness detection device for automobile piston processing in the first aspect embodiment of the present invention includes a housing 11 and a piston 3. The housing 11 has a tubular structure with a closed bottom, one side of the housing 11 is open, four corners of the inner bottom surface of the housing 11 are fixedly installed with hydraulic push rods 13, the upper ends of the hydraulic push rods 13 are fixedly installed with a detection platform 12, the piston 3 can be installed on the detection platform 12, a sealed chamber 14 is arranged above the detection platform 12, a rotating disk 16 is rotatably installed at the upper end of the housing 11, a pressure detection head 21 is installed at one end of the rotating disk 16, and a pressure plug 19 is installed at the other end. The pressure plug 19 and the detection platform 12 can hermetically seal the upper and lower ends of the sealed chamber 14, and gasified fuel can be introduced into the sealed chamber 14.

[0022] In the above embodiment, it should be noted that the outer diameter of the pressure plug 19 is equal to the inner diameter of the sealed chamber 14, and the inner diameter of the sealed chamber 14 is larger than the diameter of the piston 3. The piston 3 is placed on the top surface of the detection platform 12, and then the pressure plug 19 and the detection platform 12 are driven to hermetically seal the upper and lower ends of the sealed chamber 14. By introducing gasified fuel into the sealed chamber 14 and then igniting the gasified fuel in the sealed chamber 14 to burn the piston 3 in the sealed chamber 14, after repeating several times, the rotating disk 16 is rotated to drive the pressure detection head 21 to extrude the surface of the piston 3, so as to simulate the high temperature and high pressure environment generated during the operation of the engine and test the surface hardness of the piston under working conditions, reducing the difference between the piston hardness in actual use and the hardness during measurement, and reducing the risk of damage and failure of the piston component.

[0023] Embodiment 2

[0024] As Figure 1 and Figure 2As shown in the figure, a hardness detection device for automobile piston processing includes all the contents of Embodiment 1. In addition, hydraulic rods are fixedly installed at both the upper and lower ends of the rotating disk 16. The hydraulic rod at one end of the rotating disk 16 is fixedly connected to the pressure plug 19, and the hydraulic rod at the other end of the rotating disk 16 is fixedly connected to the pressure detection head 21. Convex plates are provided on both sides of the upper end of the housing 11. A rotating shaft 17 is rotatably installed between the convex plates at the upper end of the housing 11. The rotating shaft 17 passes through the middle of the rotating disk 16 and is fixedly connected to the rotating disk 16. A motor 18 is fixedly installed at one end of the rotating shaft 17, and the motor 18 can drive the rotating shaft 17 and the rotating disk 16 to rotate.

[0025] In the above embodiment, it should be noted that the pressure plug 19 is made of rubber material, and the pressure detection head 21 is a detection device for measuring the surface hardness of an object. It is internally provided with a pressure sensor, and measures the surface hardness of the object by detecting the maximum pressure value applied to the surface of the object; by starting the hydraulic rod, the effect of driving the pressure plug 19 or the pressure detection head 21 to insert into the upper end of the sealing chamber 14 is achieved, and by starting the motor 18 to drive the rotating shaft 17 and the rotating disk 16 to rotate, the effect of switching the pressure plug 19 or the pressure detection head 21 is achieved.

[0026] Embodiment 3

[0027] As Figures 1-5 shown in the figure, a hardness detection device for automobile piston processing includes all the contents of Embodiment 2. In addition, intake ducts 15 are fixedly connected to both sides of the spark plug 20. The end of the intake duct 15 away from the sealing chamber 14 penetrates to the outside of the housing 11 and is connected to a fuel tank. A spark plug 20 is fixedly installed on the bottom surface of the detection platform 12, and the two electrodes of the spark plug 20 penetrate upward through the bottom surface of the detection platform 12 to the top surface of the detection platform 12.

[0028] In the above embodiment, it should be noted that the mixture of air and fuel can be injected into the sealing chamber 14 through the intake duct 15; the spark plug 20 is the most common ignition mechanism in an internal combustion engine. When the spark plug 20 receives a high voltage, an electric spark will be generated between the two electrodes of the spark plug 20 to ignite the mixture in the sealing chamber 14, so as to achieve the effect of impacting and burning the piston 3.

[0029] Embodiment 4

[0030] As Figures 1-5 shown in the figure, a hardness detection device for automobile piston processing includes all the contents of Embodiment 1. In addition, a sealing rubber ring is installed on the top surface of the detection platform 12 outside the piston 3, and the sealing rubber ring on the top surface of the detection platform 12 can be hermetically connected to the lower end of the sealing chamber 14.

[0031] In the above embodiments, it should be noted that by starting the hydraulic push rod 13 to push the detection platform 12 upward, the piston 3 can enter the sealing chamber 14, and at the same time, the sealing rubber ring is hermetically connected to the lower end of the sealing chamber 14.

[0032] The usage process of the present utility model is as follows: Those skilled in the art place the piston 3 on the top surface of the detection platform 12, start the hydraulic push rod 13 to push the detection platform 12 upward, so that the piston 3 enters the sealing chamber 14, and at the same time, the sealing rubber ring is hermetically connected to the lower end of the sealing chamber 14. Then, start the hydraulic rod at one end of the rotating disk 16 to push the rotating disk 16 into the upper end of the sealing chamber 14. Then, through the air inlet conduit 15, a mixed gas of air and fuel can be injected into the sealing chamber 14. Start the spark plug 20 to ignite the mixed gas in the sealing chamber 14. After repeating several times, start the motor 18 to drive the rotating shaft 17 and the rotating disk 16 to rotate. Switch the pressure detection head 21 downward, and start the hydraulic rod at the other end of the rotating disk 16 to push the pressure detection head 21 downward into the upper end of the sealing chamber 14 and squeeze the top of the piston 3, and measure the surface hardness of the piston 3 by detecting the maximum pressure value applied to the surface of the piston 3.

[0033] The above are only the preferred embodiments of the present utility model. Any person skilled in the art may modify the present utility model by using the technical solutions described above or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement made according to the technical solutions of the present utility model falls within the scope of protection required by the present utility model.

Claims

1. A hardness detection device for automobile piston processing, comprising a sleeve (11) and a piston (3). The sleeve (11) has a tubular structure with a sealed bottom, and one side of the sleeve (11) is open. Four corners of the inner bottom surface of the sleeve (11) are fixedly installed with hydraulic push rods (13), and a detection platform (12) is fixedly installed at the upper ends of the hydraulic push rods (13). The piston (3) can be installed on the detection platform (12), and it is characterized in that: Above the detection platform (12), there is a sealed chamber (14). At the upper end of the sleeve housing (11), a rotating disk (16) is rotatably installed. At one end of the rotating disk (16), a pressure detection head (21) is installed, and at the other end, a pressure plug (19) is installed. The pressure plug (19) and the detection platform (12) can hermetically seal the upper and lower ends of the sealed chamber (14), and vaporized fuel can be introduced into the sealed chamber (14).

2. The hardness detection device for automobile piston processing according to claim 1, characterized in that: Hydraulic rods are fixedly installed at both the upper and lower ends of the rotating disk (16). The hydraulic rod at one end of the rotating disk (16) is fixedly connected to the pressure plug (19), and the hydraulic rod at the other end of the rotating disk (16) is fixedly connected to the pressure detection head (21).

3. The hardness detection device for automobile piston processing according to claim 1, characterized in that: On both sides of the upper end of the sleeve housing (11), there are convex plates. Between the convex plates at the upper end of the sleeve housing (11), a rotating shaft (17) is rotatably installed. The rotating shaft (17) passes through the middle of the rotating disk (16) and is fixedly connected to the rotating disk (16).

4. The hardness detection device for automobile piston processing according to claim 3, characterized in that: At one end of the rotating shaft, a motor (18) is fixedly installed, and the motor (18) can drive the rotating shaft (17) and the rotating disk (16) to rotate.

5. The hardness detection device for processing automobile pistons according to claim 1, characterized in that: On both sides of the sealed chamber (14), an intake duct (15) is fixedly connected. The end of the intake duct (15) far from the sealed chamber (14) penetrates to the outside of the sleeve housing (11) and is connected to a fuel tank.

6. The hardness detection device for machining an automotive piston according to claim 1, wherein: At the bottom surface of the detection platform (12), a spark plug (20) is fixedly installed. The two electrodes of the spark plug (20) penetrate upward from the bottom surface of the detection platform (12) to the top surface of the detection platform (12).

7. The hardness detection device for automobile piston processing according to claim 1, characterized in that: On the top surface of the detection platform (12) outside the piston (3), a sealing rubber ring is installed. The sealing rubber ring on the top surface of the detection platform (12) can be hermetically connected to the lower end of the sealed chamber (14).

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