Strength testing device for powder metallurgy component

Abstract

The invention relates to the technical field of metallurgical part strength testing, in particular to a powder metallurgical part strength testing device which comprises a control table, a bearing table is installed in the center of the top of the control table, and triangular supporting columns are installed at the four corners of the control table; according to the designed clamping mechanism, adaptive length adjustment can be carried out according to the shape and size of the powder metallurgy part, the clamping mechanism can flexibly adapt to different contact parts of the powder metallurgy part through the adjusting rod and the rubber pad, angle adjustment is carried out, in this way, it can be ensured that the powder metallurgy part is stably clamped in the clamping process, and the clamping efficiency is improved. And the compression displacement during the strength test is avoided, so that the accuracy of the test result is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of strength testing of metallurgical parts, and in particular to a strength testing device for powder metallurgical parts. Background Art

[0002] Powder metallurgy is a process technology that produces metal powder or uses metal powder (or a mixture of metal powder and non-metallic powder) as raw material, and manufactures metal materials, composite materials and various types of parts through processes such as forming and sintering. The strength of powder metallurgy parts is directly related to the reliability and safety of parts during use. By accurately testing the strength, it can be ensured that powder metallurgy parts meet the design requirements and avoid premature failure, deformation or even fracture under actual working conditions, thereby ensuring the normal operation of the entire equipment or product.

[0003] For example, a powder metallurgy parts strength testing device with publication number CN116952704A relates to the field of powder metallurgy parts testing technology. When testing powder metallurgy parts through the I-type plate between the pressure-bearing placement plate and the top cover plate, the device can effectively improve the convenience of loading and unloading and the testing efficiency. However, in practical applications, the device still has some shortcomings, which are specifically manifested in the following two points: 1. During the strength test, if the powder metallurgy parts are broken and the fragments fly, the protection measures of the existing technology are limited to one side of the control base, and the protection height is limited, which is not conducive to comprehensive blocking and control of the fragments, and there is a great safety risk, which may cause harm to the testers.

[0004] 2. When applying pressure to the powder metallurgy part, the prior art does not have a corresponding clamping device to fix the powder metallurgy part, which may cause the powder metallurgy part to shift under the pressure, thereby affecting the accuracy of the test data and possibly damaging the powder metallurgy part itself. These problems not only reduce the efficiency of the test, but also increase the cost caused by the need for retesting.

[0005] Based on this, and in accordance with the above-mentioned viewpoints, there is still room for improvement in the existing technology for strength testing of metallurgical parts. Summary of the invention

[0006] In order to solve the above technical problems, the present application provides a powder metallurgy parts strength testing device, which adopts the following technical solutions: A powder metallurgy parts strength testing device comprises a control console, a bearing platform is installed at the center of the top of the control console, and triangular support columns are installed at the four corners of the control console.

[0007] The bottom ends of the triangular support columns are all equipped with clamping mechanisms, adjacent triangular support columns are all equipped with protective mechanisms, top covers are all equipped with tops of the triangular support columns, and a hydraulic press is installed at the center of the top of the top covers.

[0008] The clamping mechanism includes a sliding guide rail, one end of which faces the bearing platform and slides through the triangular support column. A support plate is installed at one end of the sliding guide rail close to the bearing platform, and a plurality of clamping rods are uniformly slidably penetrated on the support plate along its length direction.

[0009] Preferably, an adjusting rod is rotatably installed at one end of the clamping rod close to the supporting platform through a hinge shaft, a rubber pad is installed at one end of the adjusting rod close to the supporting platform, and two torsion springs are installed between the two ends of the hinge shaft on the clamping rod and the rubber pad.

[0010] Preferably, a rebound plate is installed at one end of the clamping rod away from the bearing platform, and two return springs are installed between the rebound plate and the support plate.

[0011] The clamping rod is provided with a limit ring between the rebound plate and the support plate.

[0012] Preferably, threaded rods penetrating the triangular support columns are installed between the sliding guide rail and the top of the console along the length direction of the sliding guide rail, and a threaded block is installed at the bottom of the sliding guide rail, and the threaded rod is rotatably connected to the threaded block.

[0013] A supporting block rotatably connected to the threaded rod is installed on the top of the console.

[0014] Preferably, a plurality of linkage lifting blocks are installed on each side of the control console, and linkage rods are installed between the linkage lifting blocks on the same side for common rotation, and both ends of the linkage rods are respectively meshed with adjacent threaded rod bevel gears for transmission.

[0015] Preferably, synchronous lifting blocks are installed on the two side walls of the triangular support column away from the bearing platform, and a rotating rod is rotatably installed between the synchronous lifting block and the triangular support column.

[0016] One end of the rotating rod away from the triangular supporting column is connected with the linkage rod through a bevel gear meshing transmission mode.

[0017] Preferably, the protection mechanism comprises a synchronous wheel mounted on a rotating rod, and a rotating rod is also rotatably mounted on the top end of the triangular support column, and the synchronous wheel is mounted on the rotating rod.

[0018] Preferably, the protection mechanism further comprises a protection plate, which is slidably mounted between adjacent triangular support columns on the same side.

[0019] A synchronous splint is installed on one side of the protective plate close to the triangular supporting column.

[0020] A synchronous belt is installed between the two synchronous wheels and the synchronous splint, and a rack meshing with the synchronous belt is installed on the synchronous splint.

[0021] Preferably, arc-shaped convex strips are installed on both sides of the protective plate close to the triangular support column, and arc-shaped grooves slidably connected to the arc-shaped convex strips are provided at positions corresponding to the arc-shaped convex strips on the triangular support column.

[0022] Preferably, a blocking plate is installed between the top of the console and two triangular support columns on the same side, and the blocking plate and the protective plate are installed on the triangular support columns in a staggered manner.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. The clamping mechanism designed in the present invention can be adaptively adjusted in length according to the shape and size of the powder metallurgy part, and can flexibly adapt to different contact parts of the powder metallurgy part through the adjustment rod and the rubber pad to adjust the angle, so that the powder metallurgy part can be firmly clamped during the clamping process to avoid pressure displacement during strength testing, thereby ensuring the accuracy of the test results.

[0024] 2. The protective mechanism designed in the present invention can move synchronously with the movement of the clamping mechanism, ensuring that when the clamping mechanism clamps the powder metallurgy part, the protective plate and the blocking plate can form a complete protective surface, thereby providing effective protection for the tester. This design improves the safety of the test process and reduces the risk of accidental contact.

[0025] 3. The present invention ensures that the protective plate will not be skewed or the like during the process of moving along the height direction of the triangular support column through the interaction of the designed arc-shaped convex strips and arc-shaped grooves, thereby ensuring that the protective plate can slide smoothly on the triangular support column and effectively protect the test personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention.

[0027] Figure 2 It is a schematic diagram of the structure among the hydraulic press, hydraulic rod, top cover plate, triangular support column and pressure round block of the present invention.

[0028] Figure 3 It is a structural schematic diagram of the clamping mechanism of the present invention.

[0029] Figure 4 The present invention Figure 3 A partial enlarged view of point A.

[0030] Figure 5 The present invention Figure 3 A partial enlarged view of point B.

[0031] Figure 6 It is a schematic diagram of the structure among the triangular support column, the linkage lifting block and the linkage rod of the present invention.

[0032] Figure 7 The present invention Figure 6 A partial enlarged view of point C.

[0033] Figure 8 It is a structural schematic diagram of the protection mechanism of the present invention.

[0034] Fig. 9 It is a structural schematic diagram of the triangular support column, linkage rod, synchronous lifting block, rotating rod, synchronous wheel and synchronous belt of the present invention.

[0035] Fig.10 It is a schematic diagram of the structure among the synchronous splint, synchronous belt and rack of the present invention.

[0036] Fig.11 It is a schematic diagram of the structure between the protective plate, the arc-shaped convex strip and the arc-shaped groove of the present invention.

[0037] Explanation of the accompanying drawings: 1. Control console; 11. Linkage lifting block; 12. Linkage rod; 13. Linkage bevel gear; 2. Carrying platform; 3. Triangular support column; 4. Clamping mechanism; 41. Sliding guide rail; 42. Support plate; 43. Clamping rod; 44. Threaded block; 45. Adjusting rod; 46. Rubber pad; 47. Torsion spring; 48. Rebound plate; 49. Reset spring; 410. Limiting ring; 411. Threaded rod; 412. Support block; 413. Driving bevel gear; 5. Protection mechanism; 51. Synchronous lifting block; 52. Rotating rod; 53. Synchronous wheel; 54. Protection plate; 55. Synchronous splint; 56. Synchronous belt; 57. Rack; 58. Arc convex strip; 59. Arc groove; 510. Blocking plate; 6. Top cover plate; 7. Hydraulic press; 71. Hydraulic rod; 72. Pressure puck. DETAILED DESCRIPTION

[0038] The following is combined with Figures 1 to 11 This application is described in further detail.

[0039] The embodiment of the present application discloses a powder metallurgy parts strength testing device, which can ensure that the strength test is performed under the conditions of firmly clamping the powder metallurgy parts and safely protecting the test personnel.

[0040] Embodiment 1: Reference Figure 1 A powder metallurgy parts strength testing device comprises a control console 1, a bearing platform 2 is installed at the center of the top of the control console 1, and triangular support columns 3 are installed at the four corners of the control console 1.

[0041] A clamping mechanism 4 is installed at the bottom end of the triangular support column 3 to clamp and fix the powder metallurgy parts to prevent them from being compressed and displaced. A protective mechanism 5 is installed between adjacent triangular support columns 3 to block the flying fragments of the powder metallurgy parts during the test to prevent the fragments from injuring the testers.

[0042] See also Figure 3 The clamping mechanism 4 includes a sliding guide rail 41, one end of which faces the supporting platform 2 and slides through the triangular support column 3. A support plate 42 is installed at one end of the sliding guide rail 41 close to the supporting platform 2. The support plate 42 is evenly slidably penetrated along its length direction and has multiple clamping rods 43. A threaded block 44 is installed at the bottom of the sliding guide rail 41.

[0043] Reference Figure 2 A top cover plate 6 is installed on the top of the triangular support column 3, a hydraulic press 7 is installed in the center of the top of the top cover plate 6, and a plurality of hydraulic rods 71 ​​penetrating the top cover plate 6 are installed at one end of the hydraulic press 7 close to the supporting platform 2. A pressure round block 72 is installed at the bottom of the hydraulic rod 71 to perform a downward pressure test on the powder metallurgy parts and convey the obtained strength data to the tester.

[0044] A pressure sensor (not shown in the figure) is installed in the pressure round block 72 , which can transmit the measured strength data of the powder metallurgy part to the control panel (not shown in the figure) of the control console 1 .

[0045] During the specific implementation process, the powder metallurgy parts to be strength tested are first placed on the support platform 2. After placement, the clamping mechanism 4 is started, and all the sliding guide rails 41 begin to move toward the support platform 2 synchronously. When the clamping rod 43 contacts the powder metallurgy parts and clamps them, the hydraulic press 7 starts to start, and the hydraulic rod 71 drives the pressure block 72 to start a downward pressure test on the powder metallurgy parts. The clamping rod 43 fixes the powder metallurgy parts to avoid the phenomenon of pressure displacement of the powder metallurgy parts when they are pressed down by the pressure block 72, thereby avoiding inaccurate strength data obtained by the pressure block 72 on the powder metallurgy parts, and at the same time avoiding damage to the powder metallurgy parts, thereby improving the test efficiency and test accuracy.

[0046] When the clamping rod 43 moves toward the powder metallurgy part, the protection mechanism 5 is also started and gradually closes the control console 1. When the clamping rod 43 fixes the powder metallurgy part, the protection mechanism 5 also closes the control console 1 synchronously. The protection mechanism 5 can block the powder metallurgy part fragments that are damaged and fly due to the pressure block 72 during the test, so as to prevent these fragments from causing harm to the testers and improve the safety of the test process. At the same time, it can prevent these fragments from impacting the pressure block 72, thereby causing errors in the results of the strength test, thereby improving the accuracy of the test.

[0047] After the pressure round block 72 presses down the powder metallurgy part, the obtained strength data of the powder metallurgy part can be transmitted to the control panel through the pressure sensor inside the pressure round block 72, and then the tester can obtain the strength data of the tested powder metallurgy part through the control panel.

[0048] Reference Figure 3 and Figure 4 In order to enable the clamping rod 43 to tightly clamp the powder metallurgy part, an adjusting rod 45 is installed on the end of the clamping rod 43 close to the supporting platform 2 through a hinge shaft, and is rotated according to the shape of the powder metallurgy part to adapt to the shape of the powder metallurgy part. A rubber pad 46 is installed on the end of the adjusting rod 45 close to the supporting platform 2, and two torsion springs 47 are installed between the two ends of the hinge shaft on the clamping rod 43 and the rubber pad 46.

[0049] During the specific implementation process, after the clamping mechanism 4 contacts the powder metallurgy part, the adjusting rod 45 can be adaptively rotated according to the shape of the powder metallurgy part, so that the rubber pad 46 can fit the shape of the powder metallurgy part to clamp the powder metallurgy part. This fit makes the powder metallurgy part more stable in the clamped state, and can effectively prevent displacement due to pressure during strength testing, thereby ensuring the accuracy of the test results and reducing possible damage to the powder metallurgy parts during the test.

[0050] After the pressure block 72 completes the strength test, the adjusting rod 45 drives the rubber pad 46 to start leaving the powder metallurgy part. At the same time, the torsion spring 47 also starts to drive the rubber pad 46 and the adjusting rod 45 to reset. After the adjusting rod 45 and the rubber pad 46 are completely separated from the powder metallurgy part, the adjusting rod 45 and the rubber pad 46 are reset to the initial state to facilitate the next clamping operation.

[0051] This design not only reduces potential damage to the sample during the test, but also improves the efficiency and repeatability of the test process, and enhances the reliability and accuracy of the test results.

[0052] Reference Figure 3 and Figure 5 Taking into account the diversity of shapes of powder metallurgy parts, in order to achieve more stable and reliable clamping, the clamping rod 43 needs to be adaptively adjusted according to the specific shape. Specifically, a rebound plate 48 is installed at the end of the clamping rod 43 away from the supporting platform 2, and two return springs 49 with a large stiffness coefficient are installed between the rebound plate 48 and the support plate 42; the clamping rod 43 is installed with a limit ring 410 between the rebound plate 48 and the support plate 42. When the return spring 49 is stretched, it can provide greater restoring force, thereby increasing the clamping force of the powder metallurgy parts.

[0053] Among them, a sliding groove (not shown in the figure) is opened on the side of the sliding guide rail 41 facing the clamping rod 43, and the sliding groove corresponds to the clamping rod 43 in the middle of the support plate 42. The rebound plate 48 at one end of the clamping rod 43 is slidably arranged in the sliding groove to facilitate the movement of the clamping rod 43 in the middle part of the support plate 42.

[0054] During the specific implementation process, after the clamping rod 43 contacts the powder metallurgy part, the different clamping rods 43 on the same support plate 42 will adjust their lengths according to the shape of the powder metallurgy part, and finally the clamping rods 43 will form a mutually dislocated shape. For example, if one of the clamping rods 43 contacts the protruding part of the powder metallurgy part, the clamping rod 43 will stop moving due to the obstruction of the protruding part of the powder metallurgy part. At the same time, the sliding guide rail 41 continues to drive the support plate 42 and other clamping rods 43 to move toward the powder metallurgy part, so that the clamping rod 43 will slide relatively backward on the support plate 42, thereby retreating with the rebound plate 48 and putting the return spring 49 in a stretched state. After all the clamping rods 43 contact the powder metallurgy part, the clamping rods 43 on the same support plate 42 will form a mutually dislocated shape according to the shape of the powder metallurgy part, and because the return spring 49 has a large stiffness coefficient, the clamping force of the return spring 49 on the powder metallurgy part becomes greater and greater during the elongation process.

[0055] At the same time, under the joint clamping of the four clamping mechanisms 4 at the four corners of the square, the powder metallurgy part can be firmly fixed, so that when the pressure round block 72 is subjected to strength testing, the powder metallurgy part will not be displaced under pressure, thereby improving the test efficiency and test accuracy.

[0056] After the test is completed, the clamping rod 43 leaves the powder metallurgy part, and the reset spring 49 drives the rebound plate 48 to start resetting. When the limit ring 410 contacts the support plate 42, it indicates that the entire clamping mechanism 4 has been completely reset, thereby meeting the subsequent operation requirements.

[0057] Reference Figure 3 In order to enable the sliding guide rail 41 to slide on the triangular support column 3 so that the clamping mechanism 4 can operate smoothly, a threaded rod 411 penetrating the triangular support column 3 is installed between the sliding guide rail 41 and the top of the console 1 along the length direction of the sliding guide rail 41, and the threaded rod 411 is rotatably connected to the threaded block 44.

[0058] A support block 412 is installed on the top of the console 1 , and a non-threaded section of the threaded rod 411 close to one end of the supporting platform 2 is rotatably connected to the support block 412 via a bearing.

[0059] During the specific implementation process, under external drive (not shown in the figure), the threaded rod 411 starts to rotate, and then the threaded block 44 drives the sliding guide rail 41 to slide on the triangular support column 3. When the clamping operation is performed, the threaded rod 411 rotates forward, and the threaded block 44 drives the sliding guide rail 41 toward the support platform 2. After the strength test is completed, the threaded rod 411 reverses, and the threaded block 44 drives the sliding guide rail 41 away from the support platform 2. Then, during a complete reciprocating motion of the sliding guide rail 41, the clamping rod 43 can realize the clamping operation of the powder metallurgy part, thereby improving the test efficiency and test accuracy.

[0060] Reference Figure 6 and Figure 7 In order to enable the clamping mechanism 4 on the control console 1 to operate synchronously and thus simultaneously complete the clamping of the powder metallurgy parts, a driving bevel gear 413 is installed at one end of the threaded rod 411 away from the supporting platform 2.

[0061] A plurality of linkage lifting blocks 11 are installed on each side of the control console 1 , and linkage rods 12 are installed between the linkage lifting blocks 11 on the same side for common rotation, and linkage bevel gears 13 meshing with the driving bevel gear 413 are installed at both ends of the linkage rods 12 .

[0062] During the specific implementation process, the threaded rod 411 drives the driving bevel gear 413 to rotate, and the driving bevel gear 413 synchronously drives the linkage bevel gear 13 with 56 to rotate, so that the linkage bevel gear 13 drives the linkage rod 12 and the linkage bevel gear 13 at the other end of the linkage rod 12 to rotate. At the same time, the linkage bevel gear 13 at the other end of the linkage rod 12 can drive the driving bevel gear 413 on the corresponding threaded rod 411 to rotate, and then the clamping mechanism 4 at the four corners of the control console 1 can clamp the powder metallurgy parts at the same time, and the clamping force exerted on the powder metallurgy parts is more uniform, so the powder metallurgy parts can be clamped more firmly, and the test results obtained during the powder metallurgy parts testing process will be more accurate.

[0063] Embodiment 2: Reference Figure 8 and Fig. 9 In order to enable the clamping mechanism 4 to drive the protection mechanism 5 to operate synchronously while in operation, synchronous lifting blocks 51 are installed on the two side walls of the triangular support column 3 away from the supporting platform 2, and a rotating rod 52 is installed between the synchronous lifting block 51 and the triangular support column 3 for common rotation.

[0064] One end of the rotating rod 52 away from the triangular support column 3 is connected to the linkage rod 12 through a bevel gear meshing transmission mode.

[0065] The protection mechanism 5 includes a synchronous wheel 53 mounted on a rotating rod 52 . A rotating rod 52 is also rotatably mounted on the top of the triangular support column 3 , and the synchronous wheel 53 is mounted on the rotating rod 52 .

[0066] The protection mechanism 5 also includes a protection plate 54 to block the flying fragments of the powder metallurgy parts to avoid harm to the tester. The protection plate 54 is slidably installed between the adjacent triangular support columns 3 on the same side.

[0067] Reference Fig.10 A synchronous clamping plate 55 is installed on one side of the protective plate 54 close to the triangular supporting column 3.

[0068] A synchronous belt 56 is installed between the two synchronous wheels 53 and the synchronous splint 55 , and a rack 57 meshing with the synchronous belt 56 is installed on the synchronous splint 55 .

[0069] Among them, the moving range of the synchronous splint 55 is always within the spacing range between the two synchronous wheels 53. During the specific implementation process, when the linkage rod 12 rotates, it drives the rotating rod 52 to rotate through the bevel gear meshing transmission method, and the rotating rod 52 then drives the corresponding synchronous wheel 53 to rotate. The synchronous wheel 53 drives the synchronous belt 56 to move through the gear meshing transmission method, and then the synchronous belt 56 drives the synchronous wheel 53 at the top of the triangular support column 3 to rotate, and at the same time drives the synchronous splint 55 to move up and down, and then the synchronous splint 55 can drive the protective plate 54 to move up and down along the height direction of the support column.

[0070] When the sliding guide rail 41 drives the clamping rod 43 to move toward the powder metallurgy part, the protective plate 54 moves downward synchronously. When the clamping rod 43 clamps the powder metallurgy part, the protective plate 54 moves to a specific position to protect the tester, thereby preventing the powder metallurgy fragments that may fly during the test from causing harm to the tester, thereby improving the safety of the test. At the same time, it can also prevent the powder metallurgy fragments from impacting the pressure block 72, thereby causing inaccurate test results, thereby improving the test efficiency and accuracy.

[0071] After the strength test of the powder metallurgy part is completed, the sliding guide rail 41 drives the clamping rod 43 to retreat, and the protective plate 54 rises synchronously, so that the tester can take the tested powder metallurgy part and clean the supporting platform 2 for the next use.

[0072] Reference Figure 1 and Fig.11 In order to enable the protective plate 54 to slide along the height direction of the triangular support column 3 so that the protective plate 54 can accurately protect the tester, arc-shaped ridges 58 are installed on both sides of the protective plate 54 close to the triangular support column 3, and an arc-shaped groove 59 slidably connected to the arc-shaped ridge 58 is provided at the position corresponding to the arc-shaped ridge 58 on the triangular support column 3.

[0073] A blocking plate 510 is installed between the top of the console 1 and the two triangular support columns 3 on the same side. The blocking plate 510 and the protective plate 54 are installed on the triangular support columns 3 in a staggered manner.

[0074] During the specific implementation process, when the synchronous wheel 53 and the synchronous belt 56 drive the synchronous clamp 55 to move, the arc-shaped protrusions 58 on both sides of the protective plate 54 can slide in the arc-shaped grooves 59 of the triangular support column 3, thereby ensuring that the protective plate 54 can always slide along the height direction of the triangular support column 3, and ensuring that the protective plate 54 will not be skewed during the movement, resulting in other situations that make it impossible to protect the tester.

[0075] Among them, when the clamping rod 43 enters the position of the supporting platform 2, the protective plate 54 and the blocking plate 510 form a complete blocking surface. During specific operation, since the shapes and sizes of the powder metallurgy parts are different, the time when the clamping rod 43 contacts the powder metallurgy parts is also different. In order to ensure that the protective mechanism 5 can form a complete blocking surface when facing powder metallurgy parts of any shape and size, so as to avoid posing a threat to the safety of the testers, the blocking plate 510 arranged on the console 1 has a certain protection height and can cooperate with the protective plate 54. When the clamping rod 43 enters the supporting platform 2, the protective plate 54 can form a complete blocking surface together with the blocking plate 510 to protect the testers.

[0076] In addition, when facing large powder metallurgy parts, the initial position of the protective plate 54 on the triangular support column 3 can be adjusted, and by adjusting the position of the meshing rack 57 between the synchronous splint 55 and the synchronous belt 56, the time when the protective plate 54 reaches the height of the blocking plate 510 can be controlled, thereby ensuring that the protective plate 54 can always form a complete blocking surface with the blocking plate 510.

[0077] The implementation principle of the present invention is: (1) The powder metallurgy part to be strength tested is placed on the support platform 2. After placement, the clamping mechanism 4 is started, and all the sliding guide rails 41 start to move toward the support platform 2 synchronously. After the clamping rod 43 contacts the powder metallurgy part and clamps and fixes the powder metallurgy part, the hydraulic press 7 starts to start, and the hydraulic rod 71 drives the pressure round block 72 to start the downward pressure test on the powder metallurgy part.

[0078] (2) When the clamping rod 43 moves toward the powder metallurgy part, the protection mechanism 5 also begins to close the control console 1 as the clamping rod 43 moves. When the clamping rod 43 completes fixing the powder metallurgy part, the protection mechanism 5 also synchronously closes the control console 1. The protection mechanism 5 can block the powder metallurgy part fragments that are damaged and fly away due to the pressure of the pressure block 72 during the test.

[0079] (3) After the pressure round block 72 presses down the powder metallurgy part, the obtained strength data of the powder metallurgy part can be transmitted to the control panel through the pressure sensor inside the pressure round block 72, and then the tester can obtain the strength data of the tested powder metallurgy part through the control panel.

[0080] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is limited by the appended rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements be included in the present invention. Any reference numerals in the accompanying drawings should not be considered as limiting the references.

[0081] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A powder metallurgy parts strength testing device, comprising a control console, characterized in that: A bearing platform is installed in the center of the top of the console, and triangular support columns are installed at the four corners of the console, including: The bottom ends of the triangular support columns are all equipped with clamping mechanisms, adjacent triangular support columns are all equipped with protective mechanisms, the tops of the triangular support columns are all equipped with top cover plates, and a hydraulic press is installed in the center of the top of the top cover plates; The clamping mechanism includes a sliding guide rail, one end of which faces the bearing platform and slides through the triangular support column. A support plate is installed at one end of the sliding guide rail close to the bearing platform, and a plurality of clamping rods are uniformly slidably penetrated on the support plate along its length direction.

2. A powder metallurgy parts strength testing device according to claim 1, characterized in that: An adjusting rod is installed at one end of the clamping rod close to the bearing platform through a hinge shaft, a rubber pad is installed at one end of the adjusting rod close to the bearing platform, and two torsion springs are installed between the two ends of the hinge shaft on the clamping rod and the rubber pad.

3. A powder metallurgy parts strength testing device according to claim 1, characterized in that: A rebound plate is installed at one end of the clamping rod away from the bearing platform, and two return springs are installed between the rebound plate and the support plate; The clamping rod is provided with a limit ring between the rebound plate and the support plate.

4. A powder metallurgy parts strength testing device according to claim 1, characterized in that: Threaded rods penetrating the triangular support columns are installed between the sliding guide rail and the top of the console along the length direction of the sliding guide rail, and threaded blocks are installed at the bottom of the sliding guide rail, and the threaded rods are rotatably connected to the threaded blocks; A supporting block rotatably connected to the threaded rod is installed on the top of the console.

5. A powder metallurgy parts strength testing device according to claim 4, characterized in that: A plurality of linkage lifting blocks are installed on each side of the control console, and linkage rods are installed between the linkage lifting blocks on the same side for common rotation, and both ends of the linkage rods are respectively meshed with adjacent threaded rod bevel gears for transmission.

6. A powder metallurgy parts strength testing device according to claim 5, characterized in that: Synchronous lifting blocks are installed on the two side walls of the triangular support column away from the bearing platform, and a rotating rod is installed between the synchronous lifting block and the triangular support column for common rotation; The rotating rod is connected with the linkage rod through a bevel gear meshing transmission mode.

7. A powder metallurgy parts strength testing device according to claim 6, characterized in that: The protection mechanism comprises a synchronous wheel installed on a rotating rod. The top end of the triangular support column is also rotatably installed with a rotating rod, and the rotating rod is installed with a synchronous wheel.

8. A powder metallurgy parts strength testing device according to claim 7, characterized in that: The protection mechanism also includes a protection plate, which is slidably installed between adjacent triangular support columns on the same side; A synchronous splint is installed on one side of the protective plate close to the triangular support column; A synchronous belt is installed between the two synchronous wheels and the synchronous splint, and a rack meshing with the synchronous belt is installed on the synchronous splint.

9. A powder metallurgy parts strength testing device according to claim 8, characterized in that: Arc-shaped convex strips are installed on both sides of the protective plate close to the triangular support column, and arc-shaped grooves slidably connected with the arc-shaped convex strips are opened at positions corresponding to the arc-shaped convex strips on the triangular support column.

10. A powder metallurgy parts strength testing device according to claim 8, characterized in that: A blocking plate is installed between the top of the console and two triangular supporting columns on the same side. The blocking plate and the protective plate are installed on the triangular supporting columns in a staggered manner.

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