A kind of automobile piston hardness testing device

Abstract

The utility model belongs to the technical field of hardness detection, and discloses a vehicle piston hardness detection device, including a detection machine body, two rubber support frames are fixedly installed at the bottom of the detection machine body, a handle is arranged inside the detection machine body, sliders are fixedly installed at the front and rear sides of the three transmission blocks, a sleeve is sleeved at the bottom of the transmission rod, and a spring is fixedly installed at the bottom of the sleeve. The metal probe compresses the piston, and the piston presses down the transmission rod, the sleeve and the spring, the transmission rod descends and drives the transmission plate to rotate, the transmission block and the rubber pad move along the arc groove opened inside the transmission plate, so that the three transmission blocks and the slider are respectively contracted inward along the limit groove and the slide groove opened inside the limit block, at this time, the spacing between the three transmission blocks gradually decreases, and the three rubber pads contact the outer surface of the piston to fix the piston, so that the stability of the piston during the automobile piston detection is improved, thereby improving the accuracy of the data.

Description

Technical Field

[0001] The utility model belongs to the technical field of hardness detection, in particular to a vehicle piston hardness detection device. Background Art

[0002] The piston is a reciprocating part in the cylinder block of a car engine. The piston is mainly used to withstand the combustion pressure in the cylinder and transmit this force to the crankshaft through the piston pin and connecting rod. In addition, the piston also forms a combustion chamber together with the cylinder head and cylinder wall.

[0003] After the production of automobile pistons, hardness testing is required to ensure the quality and safety of use. The hardness testing device for automobile pistons is a common tool for testing the quality of pistons. Since the hardness of metals has a corresponding relationship with other mechanical properties, most metal materials can be used to approximately calculate other mechanical properties such as strength, fatigue, creep and wear by measuring hardness.

[0004] When the existing automobile piston hardness testing equipment tests the piston hardness, the piston does not have a fixing device during the lifting process. Therefore, the piston will be offset, which affects the accuracy of the hardness test data of the automobile piston, thereby reducing the detection efficiency of the automobile piston. Utility Model Content

[0005] In order to solve the problems raised in the above-mentioned background technology, the utility model provides a vehicle piston hardness detection device, which solves the problem that when the vehicle piston hardness detection equipment detects the piston hardness, the piston has no fixing device during the lifting process. Therefore, the piston will be positionally offset, thereby affecting the accuracy of the hardness detection data of the vehicle piston, thereby reducing the detection efficiency of the vehicle piston.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vehicle piston hardness testing device, comprising a testing machine body, two rubber support frames are fixedly installed at the bottom of the testing machine body, a handle is arranged inside the testing machine body, a pointer meter is arranged on the front of the testing machine body, a support rod is sleeved on the external thread of the handle, a metal probe is connected to the pointer meter, a fixed block is fixedly installed on the top of the support rod, a transmission rod is movably installed inside the support rod, a transmission plate is sleeved inside the support rod, three support blocks are fixedly installed on the top of the fixed block, limiting blocks are fixedly installed on the top of the three support blocks, three transmission blocks are sleeved inside the transmission plate, a rubber pad is fixedly installed on one side of the three transmission blocks, sliders are fixedly installed on the front and rear sides of the three transmission blocks, a sleeve is sleeved on the bottom of the transmission rod, and a spring is fixedly installed on the bottom of the sleeve.

[0007] Preferably, a circular groove is formed at the top of the support rod, and the transmission rod, the sleeve and the spring are movably mounted inside the circular groove respectively.

[0008] Preferably, one end of the spring is fixedly connected to the bottom of the sleeve, and the other end of the spring is fixedly mounted to the circular groove.

[0009] Preferably, the inner circular array of the limit block has three limit slots, and the three transmission blocks pass through the three limit slots respectively.

[0010] Preferably, two sides of the three limiting grooves are provided with sliding grooves, the sliding block is sleeved inside the sliding grooves, and the sliding block is fixedly installed in the middle of the transmission block.

[0011] Preferably, the inner annular array of the transmission plate has arc-shaped grooves, and the bottoms of the three transmission blocks respectively penetrate the interior of the arc-shaped grooves.

[0012] Preferably, a thread groove is provided in the middle of the transmission plate, and the transmission plate is threadably sleeved on the middle of the transmission rod.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model ensures the stability of the piston during automobile piston detection through the transmission block, rubber pad, transmission rod and transmission plate. The metal probe compresses the piston, and the piston presses down the transmission rod, sleeve and spring. The transmission rod descends and drives the transmission plate to rotate. The transmission block and the rubber pad move along the arc groove provided inside the transmission plate, so that the three transmission blocks and the sliding block are respectively contracted inwardly along the limiting groove and the sliding groove provided inside the limiting block. At this time, the spacing between the three transmission blocks is gradually reduced, and the three rubber pads are in contact with the outer surface of the piston to fix the piston, thereby ensuring the stability of the piston during automobile piston detection, thereby improving the accuracy of data. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall appearance of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the partial installation of the structure of the utility model;

[0017] Figure 3 It is a partial explosion schematic diagram of the structure of the utility model;

[0018] Figure 4 It is a partial cross-sectional schematic diagram of the structure of the utility model;

[0019] Figure 5 This is a cross-sectional schematic diagram of the transmission plate of the utility model structure;

[0020] Figure 6 This is a schematic diagram of the cooperation between the transmission plate and the slider of the utility model structure.

[0021] In the figure: 1. detection machine body; 2. rubber support frame; 3. support rod; 4. pointer meter; 5. metal probe; 6. handle; 7. fixing block; 8. support block; 9. limit block; 10. transmission block; 11. rubber pad; 12. transmission rod; 13. transmission plate; 14. slider; 15. sleeve; 16. spring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figures 1 to 6 As shown, the utility model provides a vehicle piston hardness testing device, comprising a testing machine body 1, two rubber support frames 2 are fixedly installed at the bottom of the testing machine body 1, a handle 6 is arranged inside the testing machine body 1, a pointer gauge 4 is arranged on the front of the testing machine body 1, a support rod 3 is sleeved on the external thread of the handle 6, a metal probe 5 is connected to the pointer gauge 4, a fixing block 7 is fixedly installed on the top of the support rod 3, a transmission rod 12 is movably installed inside the support rod 3, a transmission plate 13 is sleeved inside the support rod 3, three support blocks 8 are fixedly installed on the top of the fixing block 7, limited blocks 9 are fixedly installed on the tops of the three support blocks 8, three transmission blocks 10 are sleeved inside the transmission plate 13, a rubber pad 11 is fixedly installed on one side of the three transmission blocks 10, sliders 14 are fixedly installed on the front and rear sides of the three transmission blocks 10, a sleeve 15 is sleeved on the bottom of the transmission rod 12, and a spring 16 is fixedly installed on the bottom of the sleeve 15.

[0024] The above scheme is adopted: by rotating the handle 6 to control the support rod 3 and the piston to rise and contact with the metal probe 5, the metal probe 5 compresses the piston and presses down the transmission rod 12, the sleeve 15 and the spring 16, the transmission rod 12 descends and drives the transmission plate 13 to rotate, the transmission block 10 and the rubber pad 11 move along the arc groove opened inside the transmission plate 13, so that the three transmission blocks 10 and the slider 14 are respectively contracted inward along the limit groove and the slide groove opened inside the limit block 9. At this time, the distance between the three transmission blocks 10 gradually decreases, and the three rubber pads 11 contact the outer surface of the piston to fix the piston, thereby making the piston stable during the automobile piston detection, thereby improving the accuracy of the data.

[0025] like Figure 4As shown, a circular groove is provided at the top of the support rod 3, and the transmission rod 12, sleeve 15 and spring 16 are movably installed inside the circular groove respectively, one end of the spring 16 is fixedly connected to the bottom of the sleeve 15, and the other end of the spring 16 is fixedly installed in the circular groove.

[0026] The above solution is adopted: by rotating the handle 6, the support rod 3 and the piston are controlled to rise and contact with the metal probe 5. At the same time, the metal probe 5 compresses the piston and presses down the transmission rod 12, the sleeve 15 and the spring 16. The transmission rod 12 descends to drive the transmission plate 13 to rotate.

[0027] like Figure 4 and Figure 5 As shown, the inner circular array of the limit block 9 has three limit grooves, and the three transmission blocks 10 respectively penetrate the three limit grooves. Slide grooves are opened on both sides of the three limit grooves, and the slider 14 is sleeved inside the slide groove, and the slider 14 is fixedly installed in the middle of the transmission block 10.

[0028] The above scheme is adopted: the transmission rod 12 descends and drives the transmission plate 13 to rotate. At this time, the middle parts of the three transmission blocks 10 and the slider 14 shrink inward along the limit grooves and slide grooves opened inside the limit block 9 respectively, and the spacing between the three transmission blocks 10 gradually decreases, and the rubber pad 11 contacts the outer surface of the piston.

[0029] like Figure 6 As shown, the inner annular array of the transmission plate 13 has arc grooves, the bottoms of the three transmission blocks 10 respectively penetrate the inside of the arc grooves, a thread groove is opened in the middle of the transmission plate 13, and the transmission plate 13 is threadedly sleeved on the middle of the transmission rod 12.

[0030] By adopting the above scheme, the transmission rod 12 is pressed down by the piston, and under the action of the thread of the transmission plate 13, the transmission rod 12 descends and drives the transmission plate 13 to rotate, so that the transmission block 10 and the rubber pad 11 can move along the arc groove opened inside the transmission plate 13.

[0031] The working principle and use process of this utility model:

[0032] When the main body 1 of the testing machine tests the hardness of the automobile piston, the automobile piston whose hardness needs to be tested is first placed on the top of the transmission rod 12. At this time, the piston is located on one side of the three transmission blocks 10. The staff controls the support rod 3 and the piston to rise and contact with the metal probe 5 by rotating the handle 6. Under the action of the gravity of the metal probe 5 compressing the piston, the piston presses down the transmission rod 12, the sleeve 15 and the spring 16 respectively. At the same time, under the action of the thread, the transmission rod 12 descends and drives the transmission plate 13 to rotate. At this time, the transmission block 10 and the rubber pad 11 move along the arc groove opened inside the transmission plate 13, and the middle parts of the three transmission blocks 10 and the slider 14 shrink inward along the limit groove and the slide groove opened inside the limit block 9 respectively. The spacing between the three transmission blocks 10 gradually decreases, and the three rubber pads 11 contact the outer surface of the piston, thereby fixing the piston;

[0033] After the automobile piston hardness test is completed, the handle 6 is rotated in the reverse direction to control the support rod 3 and the piston to descend. At this time, the metal probe 5 is separated from the piston. Under the elastic action of the spring 16, the spring 16 pushes the sleeve 15, the transmission rod 12 and the piston to rise respectively. At this time, the transmission rod 12 pushes the transmission plate 13 to rotate in the reverse direction and reset, and the three transmission blocks 10 and the three rubber pads 11 are reset along the arc grooves opened inside the transmission plate 13. At this time, the distance between the three rubber pads 11 gradually increases. The three rubber pads 11 are separated from the outer surface of the piston, and the tested piston can be taken out.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vehicle piston hardness testing device, comprising a testing machine body (1), two rubber support frames (2) are fixedly installed at the bottom of the testing machine body (1), a handle (6) is arranged inside the testing machine body (1), a pointer gauge (4) is arranged on the front of the testing machine body (1), a support rod (3) is threadedly sleeved on the outside of the handle (6), and a metal probe (5) is connected to the pointer gauge (4), characterized in that: A fixed block (7) is fixedly mounted on the top of the support rod (3); a transmission rod (12) is movably mounted inside the support rod (3); a transmission plate (13) is sleeved inside the support rod (3); three support blocks (8) are fixedly mounted on the top of the fixed block (7); limiting blocks (9) are fixedly mounted on the tops of the three support blocks (8); three transmission blocks (10) are sleeved inside the transmission plate (13); a rubber pad (11) is fixedly mounted on one side of the three transmission blocks (10); sliders (14) are fixedly mounted on the front and rear sides of the three transmission blocks (10); a sleeve (15) is sleeved on the bottom of the transmission rod (12); and a spring (16) is fixedly mounted on the bottom of the sleeve (15).

2. The automobile piston hardness detection device according to claim 1 is characterized in that: A circular groove is provided on the top of the support rod (3), and the transmission rod (12), the sleeve (15) and the spring (16) are movably mounted inside the circular groove.

3. The automobile piston hardness detection device according to claim 2 is characterized in that: One end of the spring (16) is fixedly connected to the bottom of the sleeve (15), and the other end of the spring (16) is fixedly installed in the circular groove.

4. The automobile piston hardness detection device according to claim 1 is characterized in that: The inner circular array of the limiting block (9) has three limiting grooves, and the three transmission blocks (10) respectively penetrate the three limiting grooves.

5. The automobile piston hardness detection device according to claim 4 is characterized in that: Slide grooves are provided on both sides of the three limit grooves, the slide block (14) is sleeved inside the slide grooves, and the slide block (14) is fixedly mounted on the middle part of the transmission block (10).

6. The automobile piston hardness testing device according to claim 1, characterized in that: The inner annular array of the transmission plate (13) has arc-shaped grooves, and the bottoms of the three transmission blocks (10) respectively penetrate the interior of the arc-shaped grooves.

7. The automobile piston hardness detection device according to claim 1 is characterized in that: A thread groove is provided in the middle of the transmission plate (13), and the transmission plate (13) is threadably sleeved on the middle of the transmission rod (12).

Images