A strength testing device for powder metallurgy parts

Abstract

The present application relates to the technical field of strength testing of metallurgical parts, and in particular to a device for testing the strength of powder metallurgical parts, comprising a control console, a bearing platform being installed at the center of the top of the control console, and triangular support columns being installed at the four corners of the control console; the clamping mechanism designed in the present invention can perform adaptive length adjustment according to the shape and size of the powder metallurgical part, and can flexibly adapt to different contact parts of the powder metallurgical part through an adjustment rod and a rubber pad to perform angle adjustment, so that the powder metallurgical part can be firmly clamped during the clamping process to avoid displacement due to pressure during the strength test, thereby ensuring the accuracy of the test result.

Description

Technical Field

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

[0002] Powder metallurgy is a process technology for producing metal powders or using metal powders (or mixtures of metal powders and non-metal powders) as raw materials to manufacture 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, avoiding 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 strength testing device for powder metallurgy parts with the publication number CN116952704A, which relates to the technical field of powder metallurgy part detection. When testing the powder metallurgy part through the I-shaped 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 actual applications, the device still has some deficiencies, specifically manifested in the following two points:

[0004] 1. When performing strength testing, if the powder metallurgy part breaks and the fragments fly out, the existing protection measures are limited to controlling one side of the base, and the protection height is limited. This is not conducive to comprehensively blocking and controlling the fragments, posing a great safety risk and possibly causing harm to the test personnel.

[0005] 2. When applying pressure to press the powder metallurgy part, the existing technology does not have a corresponding clamping device to fix the powder metallurgy part. This may cause the powder metallurgy part to shift under the action of pressure, thereby affecting the accuracy of the test data and possibly damaging the powder metallurgy part itself. These problems not only reduce the testing efficiency but also increase the cost due to the need for retesting.

[0006] Based on this, under the above statements, there is still room for improvement in the existing technology for testing the strength of metallurgical parts. Summary of the Invention

[0007] In order to solve the above technical problems, the present application provides a strength testing device for powder metallurgy parts, adopting the following technical solutions:

[0008] A strength testing device for powder metallurgy parts includes a control console, with a bearing platform centrally installed on the top of the control console, and triangular support columns installed at the four corners of the control console.

[0009] Clamping mechanisms are installed at the bottom ends of the triangular support columns, a protective mechanism is jointly installed between adjacent triangular support columns, a top cover plate is jointly installed at the top of the triangular support columns, and a hydraulic press is installed at the center of the top of the top cover plate.

[0010] The clamping mechanism includes a sliding guide rail. One end of the sliding guide rail faces the bearing platform and slidably penetrates through the triangular support column. A support plate is installed at the end of the sliding guide rail close to the bearing platform, and a plurality of clamping rods are slidably penetrated through the support plate along its length direction.

[0011] Preferably, one end of the clamping rod close to the bearing platform is rotatably installed with an adjusting rod through a hinge shaft. A rubber pad is installed at the end of the adjusting rod close to the bearing platform. Two torsion springs are jointly installed between the two ends of the hinge shaft on the clamping rod and the rubber pad.

[0012] Preferably, a rebound plate is installed at the end of the clamping rod far from the bearing platform, and two reset springs are installed between the rebound plate and the support plate.

[0013] A limiting ring is installed between the rebound plate and the support plate on the clamping rod.

[0014] Preferably, threaded rods penetrating through the triangular support column are installed between the sliding guide rail and the top of the control console along the length direction of the sliding guide rail. A threaded block is installed at the bottom of the sliding guide rail, and the threaded rod is rotatably connected with the threaded block.

[0015] A support block rotatably connected with the threaded rod is installed on the top of the control console.

[0016] Preferably, a plurality of linkage lifting blocks are installed on each side of the control console. Linkage rods are jointly rotatably installed between the same-side linkage lifting blocks, and the two ends of the linkage rod are respectively meshed and driven with the adjacent threaded rod bevel gears.

[0017] Preferably, synchronous lifting blocks are installed on the two side walls of the triangular support column far from the bearing platform. Rotating rods are jointly rotatably installed between the synchronous lifting blocks and the triangular support column.

[0018] One end of the rotating rod far from the triangular support column is connected with the linkage rod through a bevel gear meshing transmission method.

[0019] Preferably, the protective mechanism includes a synchronous pulley installed on the rotating rod. A rotating rod is also rotatably installed at the top end of the triangular support column, and a synchronous pulley is installed on this rotating rod.

[0020] Preferably, the protective mechanism further includes a protective plate. The protective plate is slidably installed between adjacent triangular support columns on the same side.

[0021] A synchronous clamping plate is installed on the side of the protective plate close to the triangular support column.

[0022] A synchronous belt is installed between two synchronous pulleys and a synchronous clamping plate, and a rack meshing with the synchronous belt is installed on the synchronous clamping plate.

[0023] Preferably, arc-shaped convex strips are installed on both sides of the protective plate close to the triangular support column, and arc-shaped grooves for sliding connection with the arc-shaped convex strips are provided at positions corresponding to the arc-shaped convex strips on the triangular support column.

[0024] Preferably, a blocking plate is installed between the top of the control console and two triangular support columns on the same side, and the blocking plate and the protective plate are staggeredly installed on the triangular support column.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The clamping mechanism designed in the present invention can adjust the length adaptively 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 adjusting rod and the rubber pad for angle adjustment. In this way, the powder metallurgy part can be firmly clamped during the clamping process, avoiding compression displacement during the strength test, thereby ensuring the accuracy of the test results.

[0027] 2. The protection mechanism designed in the present invention can move synchronously when the clamping mechanism moves, ensuring that when the clamping mechanism clamps the powder metallurgy part, the protective plate and the blocking plate can form a complete protection surface, thereby providing effective protection for the test personnel. This design improves the safety of the test process and reduces the risk of accidental contact.

[0028] 3. Through the mutual cooperation of the designed arc-shaped convex strips and arc-shaped grooves in the present invention, it is ensured 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, so as to ensure that the protective plate can slide smoothly on the triangular support column and effectively protect the test personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural diagram of the present invention.

[0030] Figure 2 is a schematic structural diagram among a hydraulic press, a hydraulic rod, a top cover plate, a triangular support column and a pressure round block of the present invention.

[0031] Figure 3 is a schematic structural diagram of the clamping mechanism of the present invention.

[0032] Figure 4 is the present invention Figure 3 partial enlarged view of A.

[0033] Figure 5 is the present invention Figure 3 partial enlarged view of B.

[0034] Figure 6 It is a schematic structural diagram among the triangular support column, the linkage lifting block and the linkage rod of the present invention.

[0035] Figure 7 It is the present invention Figure 6 A partial enlarged view of part C.

[0036] Figure 8 It is a schematic structural diagram of the protection mechanism of the present invention.

[0037] Figure 9 It is a schematic structural diagram among the triangular support column, the linkage rod, the synchronous lifting block, the rotating rod, the synchronous pulley and the synchronous belt of the present invention.

[0038] Figure 10 It is a schematic structural diagram among the synchronous clamping plate, the synchronous belt and the rack of the present invention.

[0039] Figure 11 It is a schematic structural diagram among the protection plate, the arc-shaped convex strip and the arc-shaped groove of the present invention.

[0040] Explanation of reference numerals: 1, control console; 11, linkage lifting block; 12, linkage rod; 13, linkage bevel gear; 2, bearing 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, rebounding plate; 49, return 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 pulley; 54, protection plate; 55, synchronous clamping plate; 56, synchronous belt; 57, rack; 58, arc-shaped convex strip; 59, arc-shaped groove; 510, blocking plate; 6, top cover plate; 7, hydraulic press; 71, hydraulic rod; 72, pressure round block. Detailed implementation manners

[0041] The following further elaborates on this application Figures 1 to 11 in conjunction with the appended drawings.

[0042] The embodiment of this application discloses a strength testing device for powder metallurgy parts, which can ensure the strength testing under the conditions of firmly clamping the powder metallurgy parts and protecting the testers.

[0043] Embodiment 1:

[0044] Referring to Figure 1 , a strength testing device for powder metallurgy parts includes a control console 1, a bearing platform 2 is installed in 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.

[0045] Clamping mechanisms 4 are installed at the bottom ends of the triangular support columns 3 to clamp and fix the powder metallurgy parts, preventing them from shifting under pressure. A protective mechanism 5 is jointly installed between adjacent triangular support columns 3 to block the fragments that are ejected during the test of the powder metallurgy parts and prevent the fragments from injuring the test personnel.

[0046] Refer to Figure 3 , the clamping mechanism 4 includes a sliding guide rail 41. One end of the sliding guide rail 41 faces the bearing platform 2 and slidably penetrates through the triangular support column 3. A support plate 42 is installed at the end of the sliding guide rail 41 close to the bearing platform 2. A plurality of clamping rods 43 are slidably penetrated through the support plate 42 along its length direction. A threaded block 44 is installed at the bottom of the sliding guide rail 41.

[0047] Refer to Figure 2 , a top cover plate 6 is jointly installed at the top of the triangular support columns 3. A hydraulic press 7 is installed at the center of the top of the top cover plate 6. A plurality of hydraulic rods 71 penetrating through the top cover plate 6 are installed at one end of the hydraulic press 7 close to the bearing platform 2. A pressure round block 72 is jointly installed at the bottom of the hydraulic rods 71 to perform a downward pressure test on the powder metallurgy parts and convey the obtained strength data to the test personnel.

[0048] Among them, a pressure sensor (not shown in the figure) is installed inside the pressure round block 72, which can convey the measured strength data of the powder metallurgy parts to the control panel (not shown in the figure) of the control console 1.

[0049] During the specific implementation process, first place the powder metallurgy parts to be subjected to strength testing on the bearing platform 2. After placement, start the clamping mechanism 4, and all the sliding guide rails 41 start to move synchronously towards the bearing platform 2. When the clamping rods 43 contact the powder metallurgy parts and clamp and fix them, the hydraulic press 7 starts. The hydraulic rods 71 drive the pressure round block 72 to perform a downward pressure test on the powder metallurgy parts. The clamping rods 43 fixing the powder metallurgy parts can prevent the powder metallurgy parts from shifting under pressure when being pressed by the pressure round block 72, thereby avoiding inaccurate strength data obtained from the test of the powder metallurgy parts by the pressure round block 72 and also avoiding damage to the powder metallurgy parts, thus improving the test efficiency and the accuracy of the test.

[0050] During the process of the clamping rods 43 moving towards the powder metallurgy parts, the protective mechanism 5 is also activated, gradually enclosing the control console 1. When the clamping rods 43 complete the fixation of the powder metallurgy parts, the protective mechanism 5 also synchronously completes the enclosure of the control console 1. The protective mechanism 5 can block the fragments of the powder metallurgy parts that are damaged and ejected by the downward pressure of the pressure round block 72 during the test, avoiding these fragments from injuring the test personnel, improving the safety of the test process, and at the same time avoiding these fragments from impacting the pressure round block 72, thereby causing errors in the result of the strength test, thus improving the accuracy of the test.

[0051] After the pressure round block 72 presses down on the powder metallurgy part, the strength data of the obtained 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.

[0052] Referring to Figure 3 and Figure 4 In order to enable the clamping rod 43 to firmly clamp the powder metallurgy part, one end of the clamping rod 43 close to the bearing platform 2 is rotatably installed with an adjusting rod 45 through a hinge shaft, which rotates according to the shape of the powder metallurgy part to adapt to the shape of the powder metallurgy part. One end of the adjusting rod 45 close to the bearing platform 2 is installed with a rubber pad 46, and two torsion springs 47 are jointly installed between the two ends of the hinge shaft on the clamping rod 43 and the rubber pad 46.

[0053] In the specific implementation process, after the clamping mechanism 4 contacts the powder metallurgy part, the adjusting rod 45 can make an adaptive rotation 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, effectively preventing displacement due to pressure during the strength test, thereby ensuring the accuracy of the test results and reducing possible damage to the powder metallurgy part during the test process.

[0054] After the pressure round 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 for the next clamping operation.

[0055] This design not only reduces potential damage to the sample during the test process, but also improves the efficiency and repeatability of the test process, enhancing the reliability and accuracy of the test results.

[0056] Referring to Figure 3 and Figure 5 Considering the diversity of the 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, one end of the clamping rod 43 far from the bearing platform 2 is installed with a resilient plate 48, and two reset springs 49 with relatively large stiffness coefficients are installed between the resilient plate 48 and the support plate 42; a limiting ring 410 is installed between the clamping rod 43, the resilient plate 48 and the support plate 42. When the reset spring 49 is stretched, it can provide a greater restoring force, thereby increasing the clamping force on the powder metallurgy part.

[0057] Wherein, a sliding groove (not shown in the figure) is formed on one 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. A resilient 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.

[0058] During the specific implementation process, after the clamping rod 43 contacts the powder metallurgy part, different clamping rods 43 on the same support plate 42 will adjust their lengths according to the shape of the powder metallurgy part. Eventually, the clamping rods 43 will form a mutually misaligned state. For example, if one of the clamping rods 43 contacts a protruding part of the powder metallurgy part, this 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 is still driving the support plate 42 and other clamping rods 43 to move towards the powder metallurgy part. Therefore, this clamping rod 43 will slide backward relative to the support plate 42, thereby driving the resilient plate 48 to retreat and making 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 misaligned state according to the shape of the powder metallurgy part. And because the spring constant of the return spring 49 is relatively large, the clamping force on the powder metallurgy part by the return spring 49 will become larger and larger during the stretching process.

[0059] Meanwhile, under the joint clamping of the four clamping mechanisms 4 at the four corner positions of the square, the powder metallurgy part can be firmly fixed, so that when the pressure round block 72 is performing a strength test, the powder metallurgy part will not be displaced under pressure, improving the test efficiency and test accuracy.

[0060] After the test is completed, the clamping rod 43 leaves the powder metallurgy part, and the return spring 49 drives the resilient 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, thus meeting the requirements of subsequent operations.

[0061] Refer to 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, threaded rods 411 passing through the triangular support column 3 are installed between the sliding guide rail 41 and the top of the console 1 along the length direction of the sliding guide rail 41. The threaded rods 411 are rotatably connected to the threaded blocks 44.

[0062] A support block 412 is installed on the top of the console 1, and the non-threaded section of the threaded rod 411 near the end of the bearing platform 2 is rotatably connected to the support block 412 through a bearing.

[0063] In the specific implementation process, driven externally (not shown in the figure), the threaded rod 411 starts to rotate. Then, the threaded block 44 drives the sliding guide 41 to slide on the triangular support column 3. When performing the clamping operation, the threaded rod 411 rotates forward, and at the same time, the threaded block 44 drives the sliding guide 41 to move towards the bearing platform 2. After the strength test is completed, the threaded rod 411 rotates in reverse, and at the same time, the threaded block 44 drives the sliding guide 41 to move away from the bearing platform 2. Thus, during a complete reciprocating movement of the sliding guide 41, the clamping rod 43 can perform the clamping operation on the powder metallurgy part, improving the test efficiency and test accuracy.

[0064] Referring to Figure 6 and Figure 7 , in order to enable the clamping mechanism 4 on the console 1 to operate synchronously, so as to simultaneously complete the clamping of the powder metallurgy part, a driving bevel gear 413 is installed at one end of the threaded rod 411 away from the bearing platform 2.

[0065] A plurality of linkage lifting blocks 11 are installed on each side of the console 1. A linkage rod 12 is rotatably installed between the linkage lifting blocks 11 on the same side. Linkage bevel gears 13 meshing with the driving bevel gear 413 are installed at both ends of the linkage rod 12.

[0066] In the specific implementation process, the threaded rod 411 drives the driving bevel gear 413 to rotate. The driving bevel gear 413 drives the linkage bevel gear 13 to rotate synchronously through the synchronous belt 56. Thus, 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. Then, the clamping mechanisms 4 at the four corners of the console 1 can simultaneously perform the clamping operation on the powder metallurgy part, and the clamping force received by the powder metallurgy part is more uniform. Therefore, the powder metallurgy part can be clamped more firmly, and during the test process of the powder metallurgy part, the obtained test results will also be more accurate.

[0067] Embodiment 2:

[0068] Referring to Figure 8 and Figure 9 , in order to enable the clamping mechanism 4 to drive the protection mechanism 5 to operate synchronously while operating, synchronous lifting blocks 51 are installed on both side walls of the triangular support column 3 away from the bearing platform 2. A rotating rod 52 is rotatably installed between the synchronous lifting block 51 and the triangular support column 3.

[0069] 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 method.

[0070] The protection mechanism 5 includes a synchronous wheel 53 installed on the rotating rod 52. A rotating rod 52 is also rotatably installed at the top of the triangular support column 3, and a synchronous wheel 53 is installed on this rotating rod 52.

[0071] The protection mechanism 5 further includes a protection plate 54, which blocks the flying fragments of the powder metallurgy parts to avoid harm to the test personnel. The protection plate 54 is slidably installed between the adjacent triangular support columns 3 on the same side.

[0072] Refer to Figure 10 , a synchronous clamping plate 55 is installed on one side of the protection plate 54 close to the triangular support column 3.

[0073] A synchronous belt 56 is jointly installed between the two synchronous pulleys 53 and the synchronous clamping plate 55, and a rack 57 meshing with the synchronous belt 56 is installed on the synchronous clamping plate 55.

[0074] Among them, the moving range of the synchronous clamping plate 55 is always within the spacing range between the two synchronous pulleys 53. In 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. The rotating rod 52 then drives the corresponding synchronous pulley 53 to rotate. The synchronous pulley 53 drives the synchronous belt 56 to move through the gear meshing transmission method. Furthermore, the synchronous belt 56 drives the synchronous pulley 53 at the top of the triangular support column 3 to rotate, and at the same time drives the synchronous clamping plate 55 to move up and down. Thus, the synchronous clamping plate 55 can drive the protection plate 54 to move up and down along the height direction of the support column.

[0075] When the sliding guide rail 41 drives the clamping rod 43 to move towards the powder metallurgy part, the protection plate 54 moves down synchronously. When the clamping rod 43 clamps the powder metallurgy part, the protection plate 54 just moves to a specific position to protect the test personnel, avoiding harm to the test personnel caused by the flying fragments of the powder metallurgy parts that may occur during the test, improving the safety of the test. At the same time, it can also avoid the impact of the powder metallurgy part fragments on the pressure round block 72, thereby making the test result inaccurate, and improving the test efficiency and test accuracy.

[0076] 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 protection plate 54 rises synchronously, which is convenient for the test personnel to take the tested powder metallurgy part and clean the bearing platform 2 for the next use.

[0077] Refer to Figure 1 and Figure 11 , in order to enable the protection plate 54 to slide along the height direction of the triangular support column 3 so that the protection plate 54 can accurately protect the test personnel, arc-shaped convex strips 58 are installed on both sides of the protection plate 54 close to the triangular support column 3, and arc-shaped grooves 59 slidably connected to the arc-shaped convex strips 58 are provided at the corresponding positions on the triangular support column 3.

[0078] A baffle plate 510 is jointly installed between the top of the console 1 and two triangular support columns 3 on the same side. The baffle plate 510 and the protection plate 54 are misaligned and installed on the triangular support columns 3.

[0079] During the specific implementation process, when the synchronous pulley 53 and the synchronous belt 56 drive the synchronous clamping plate 55 to move, the arc-shaped convex strips 58 on both sides of the protection plate 54 can slide in the arc-shaped grooves 59 of the triangular support columns 3, so as to ensure that the protection plate 54 can always slide along the height direction of the triangular support columns 3, and ensure that the protection plate 54 will not be skewed during the movement, resulting in other situations where it cannot protect the test personnel.

[0080] Among them, when the clamping rod 43 enters the position of the bearing platform 2, the protection plate 54 and the baffle plate 510 form a complete blocking surface. Specifically, during work, since the shapes and sizes of powder metallurgy parts are different, the time when the clamping rod 43 contacts the powder metallurgy part is also different. In order to ensure that the protection mechanism 5 can form a complete blocking surface in the face of powder metallurgy parts of any shape and size, so as to avoid threatening the safety of test personnel, the baffle plate 510 set on the console 1 has a certain protection height and can cooperate with the protection plate 54. When the clamping rod 43 enters the bearing platform 2, the protection plate 54 can jointly form a complete blocking surface with the baffle plate 510 to protect the test personnel.

[0081] In addition, when facing large powder metallurgy parts, the initial position of the protection plate 54 on the triangular support column 3 can be adjusted, and by adjusting the position of the meshing rack 57 between the synchronous clamping plate 55 and the synchronous belt 56, the time when the protection plate 54 reaches the height of the baffle plate 510 can be controlled, so as to ensure that the protection plate 54 can always form a complete blocking surface with the baffle plate 510.

[0082] The implementation principle of the present invention is as follows:

[0083] (1) Place the powder metallurgy part to be subjected to strength test on the bearing platform 2. After placement, start the clamping mechanism 4, and all the sliding guide rails 41 start to move synchronously towards the bearing platform 2. After the clamping rod 43 contacts the powder metallurgy part and clamps and fixes the powder metallurgy part, the hydraulic press 7 starts, and the hydraulic rod 71 drives the pressure round block 72 to start pressing and testing the powder metallurgy part.

[0084] (2) During the process of the clamping rod 43 moving towards the powder metallurgy part, the protection mechanism 5 also starts to close the console 1 as the clamping rod 43 moves. When the clamping rod 43 fixes the powder metallurgy part, the protection mechanism 5 also synchronously closes the console 1. The protection mechanism 5 can block the fragments of the powder metallurgy part that are damaged and fly off by the pressure of the pressure round block 72 during the test.

[0085] After the pressure round block 72 presses down on the powder metallurgy part, the strength data of the obtained 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.

[0086] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the matters referred to.

[0087] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments 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, wherein: a clamping mechanism is installed at the bottom of each triangular support column, a protective mechanism is installed between adjacent triangular support columns, a top cover plate is installed on the top of each triangular support column, and a hydraulic press is installed in the center of the top of the top cover plate; The clamping mechanism includes a sliding guide rail, one end of which faces the load-bearing platform and slides through the triangular support column, and a support plate is installed at one end of the sliding guide rail close to the load-bearing platform, and a plurality of clamping rods are uniformly slidably penetrated along the length direction of the support plate; 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; 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 support block rotatably connected to the threaded rod is installed on the top of the console; Multiple linkage lifting blocks are installed on each side of the console, and linkage rods are installed between the linkage lifting blocks on the same side for common rotation, and the two ends of the linkage rods are respectively meshed with adjacent threaded rod bevel gears for transmission; 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 to the linkage rod through a bevel gear meshing transmission mode; The protection mechanism includes a synchronous wheel mounted on a rotating rod, and a rotating rod is also rotatably mounted on the top of the triangular support column, and the rotating rod is mounted with a synchronous wheel; 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; 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.

2. 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.

3. A powder metallurgy parts strength testing device according to claim 1, 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.

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