A hardness detection device for impeller side wall
Patent Information
- Application Number
- CN202522466135.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-20
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-11-20
AI Technical Summary
[0003]汽车行业要求小叶轮侧壁360°全周检测，检测点密度需达每10°1个点，现有检测方式无法满足精准与高效的双重需求：多数中小型汽车零部件企业仍采用便携式硬度计人工检测，操作人员需手持探头逐点贴合叶轮侧壁，因小叶轮尺寸小、曲面复杂，检测点定位依赖人工经验，易出现漏检或重复检测问题，且单轮检测耗时长，无法适配量产需求
本实用新型提供的一种叶轮侧壁的硬度检测装置，全程自动化运行，无需人工手持探头逐点检测，单次360°全周检测可快速完成，相比人工检测耗时缩短，转动组件与升降组件协同工作，检测点切换无需人工干预，满足中小型企业量产检测的高效需求，从而达到了改善人工手持硬度计检测叶轮表面硬度的方式，提高检测效率和精度的效果。
Smart Images
Figure CN224906555U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of impeller testing equipment, and in particular to a device for testing the hardness of impeller sidewalls. Background Technology
[0002] Impellers are core components of critical automotive fluid systems, widely used in devices such as water pumps, turbochargers, and air conditioning compressors. The hardness of their sidewalls directly determines the component's wear resistance, sealing reliability, and service life. Therefore, automotive impellers must undergo rigorous sidewall hardness testing before leaving the factory to ensure they meet the stringent quality standards of the automotive industry.
[0003] The automotive industry requires 360° full-circumference inspection of the impeller sidewalls, with a test point density of one point every 10°. Existing inspection methods cannot meet the dual requirements of accuracy and efficiency: most small and medium-sized automotive parts companies still use portable hardness testers for manual inspection. Operators need to hold the probe and place it against the impeller sidewall point by point. Because the impeller is small in size and has a complex curved surface, the positioning of the test points depends on manual experience, which can easily lead to missed inspections or repeated inspections. Moreover, the inspection of a single impeller is time-consuming and cannot meet the needs of mass production. Utility Model Content
[0004] In order to improve the method of manually testing the surface hardness of impellers with a handheld hardness tester and increase testing efficiency and accuracy, this application provides a hardness testing device for the sidewall of an impeller.
[0005] The hardness testing device for impeller sidewalls provided in this application adopts the following technical solution: A hardness testing device for impeller sidewalls includes a base, an operating table on the base, a support frame for placing the impeller connected to the operating table, a clamping block on each opposite side of the support frame, an elastic sliding assembly between the operating table and the clamping blocks, a movable block on each opposite side of the operating table, a transverse moving assembly between the base and the movable blocks, a pin for fixing the impeller rotatably connected to the movable block, a rotating assembly on the movable block, a fixed frame connected to the base, a mounting plate on the fixed frame, a lifting assembly between the fixed frame and the mounting plate, and a hardness testing probe on the mounting plate.
[0006] Preferably, the elastic sliding assembly includes a first guide rail, a first slider, a fixed block, a guide rod, and a compression spring. The first guide rail is connected to the operating table. Two first sliders are slidably arranged on the first guide rail. The first sliders are connected to the clamping block. The fixed block is connected to the end of the operating table. The guide rod is fixedly connected to the fixed block. The guide rod is arranged in a direction parallel to the first guide rail. The guide rod is slidably inserted into the clamping block. The clamping block has a guide hole. The compression spring is sleeved on the body of the guide rod. One end of the compression spring abuts against the fixed block, and the other end abuts against the clamping block.
[0007] Preferably, the transverse component includes a second guide rail, a second slider, a fixed plate, a push cylinder, and a connecting block. The second guide rail is connected to the base, and the operating table is fixedly connected to the center of the second guide rail. Two second sliders are slidably arranged on the second guide rail, and the second sliders are connected to the movable block. The fixed plate is connected to the base, and the push cylinder is connected to the fixed plate. The piston rod of the push cylinder is parallel to the second guide rail. The connecting block is connected to the movable block, and the piston rod of the push cylinder is connected to the connecting block.
[0008] Preferably, the rotating assembly includes a first bearing housing, a connecting plate, a first servo motor, a first pulley, a second pulley, and a first synchronous belt. The first bearing housing is connected to a movable block, the ejector pin is connected inside the first bearing housing, the connecting plate is connected to one of the movable blocks, the first servo motor is mounted on the connecting plate, the first pulley is connected to the output shaft of the first servo motor, the second pulley is connected to the ejector pin, and the first synchronous belt is wound between the first pulley and the second pulley.
[0009] Preferably, the lifting assembly includes a second servo motor, a third pulley, a fourth pulley, a second synchronous belt, a third guide rail, a third slider, a mounting block, and a lifting plate. The second servo motor is mounted on a fixed frame. The third pulley is connected to the output shaft of the second servo motor. A second bearing seat is connected to the fixed frame, and a rotating shaft is connected inside the second bearing seat. The fourth pulley is connected to the rotating shaft. The second synchronous belt is wound between the third pulley and the fourth pulley. The third guide rail is connected to the fixed frame and is arranged vertically. There is one third guide rail on each side of the second synchronous belt. The third slider is slidably mounted on the third guide rail. The lifting plate is connected between the two third sliders. The mounting plate is mounted on the lifting plate. The mounting block is connected to one of the third sliders. The second synchronous belt is clamped between the mounting block and the third slider.
[0010] Preferably, a pad is connected to the lifting plate, a fourth guide rail is connected to the pad, the fourth guide rail is arranged vertically, a fourth slider is connected to the fourth guide rail, the fourth slider is connected to the mounting plate, a first fixing post is connected to each of the opposite sides of the mounting plate, a second fixing post is connected to the pad corresponding to the first fixing post, the second fixing post is located below the first fixing post, and a tension spring is connected between the first fixing post and the second fixing post.
[0011] Preferably, an auxiliary plate is connected to the pad, and a photoelectric sensor is connected to the auxiliary plate. The photoelectric sensor is used to detect whether the first fixing post has moved into place.
[0012] Preferably, the support frame has a waist-shaped hole, and the support frame is connected to the operating table by bolts.
[0013] In summary, this application includes the following beneficial technical effects: This utility model provides a hardness testing device for impeller sidewalls, which operates fully automatically, eliminating the need for manual point-by-point testing with a handheld probe. A single 360° full-circle test can be completed quickly, reducing the time required compared to manual testing. The rotating and lifting components work together, and the switching of testing points requires no manual intervention, meeting the high-efficiency needs of mass production testing for small and medium-sized enterprises. This improves the method of manually testing the surface hardness of impellers with a handheld hardness tester, thereby increasing testing efficiency and accuracy. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of the hardness detection device for the impeller sidewall in an embodiment of this application; Figure 2 yes Figure 1 Enlarged view of point A in the middle; Figure 3 yes Figure 1 Enlarged view of point B in the middle; Figure 4 This is a schematic diagram used to illustrate the lifting component in the embodiments of this application.
[0015] Explanation of reference numerals in the attached drawings: 1. Base; 11. Operating table; 111. Support frame; 112. Clamping block; 113. Movable block; 12. Fixed frame; 121. Second bearing seat; 122. Rotating shaft; 13. Mounting plate; 131. Hardness testing probe; 132. First fixed column; 2. Elastic sliding assembly; 21. First guide rail; 22. First slider; 23. Fixed block; 24. Guide rod; 25. Compression spring; 3. Lateral movement assembly; 31. Second guide rail; 32. Second slider; 33. Fixed plate; 34. Push cylinder; 35. Connecting block; 4. 5. Ejector pin; 51. Rotating assembly; 52. First bearing seat; 53. Connecting plate; 54. First servo motor; 55. First pulley; 56. Second pulley; 67. First synchronous belt; 68. Lifting assembly; 69. Second servo motor; 60. Third pulley; 61. Fourth pulley; 62. Fourth pulley; 63. Fourth pulley; 64. Second synchronous belt; 65. Third guide rail; 66. Third slider; 67. Mounting block; 68. Lifting plate; 79. Pad plate; 70. Fourth guide rail; 71. Fourth slider; 72. Second fixed column; 73. Auxiliary plate; 74. Photoelectric sensor; 8. Tension spring. Detailed Implementation
[0016] To enable those skilled in the art to better understand the present invention, the solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0017] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or specific orientation structure and operation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0018] This application discloses a device for testing the hardness of an impeller sidewall. (Refer to...) Figures 1-4 The hardness testing device for the impeller sidewall includes a base 1, an operating table 11 on the base 1, a support frame 111 for placing the impeller connected to the operating table 11, a clamping block 112 on each opposite side of the support frame 111, an elastic sliding component 2 between the operating table 11 and the clamping block 112, a movable block 113 on each opposite side of the operating table 11, a transverse component 3 between the base 1 and the movable block 113, a pin 4 for fixing the impeller rotatably connected to the movable block 113, a rotating component 5 on the movable block 113, a fixed frame 12 connected to the base 1, a mounting plate 13 on the fixed frame 12, a lifting component 6 between the fixed frame 12 and the mounting plate 13, and a hardness testing probe 131 on the mounting plate 13.
[0019] The hardness testing probe 131 is electrically connected to an external testing system.
[0020] The elastic sliding assembly 2 includes a first guide rail 21, a first slider 22, a fixing block 23, a guide rod 24, and a compression spring 25. The first guide rail 21 is connected to the operating table 11. Two first sliders 22 are slidably arranged on the first guide rail 21. The first sliders 22 are connected to the clamping block 112. The fixing block 23 is connected to the end of the operating table 11. The guide rod 24 is fixedly connected to the fixing block 23. The guide rod 24 is arranged in a direction parallel to the first guide rail 21. The guide rod 24 is slidably inserted into the clamping block 112. The clamping block 112 has a guide hole. The compression spring 25 is sleeved on the rod of the guide rod 24. One end of the compression spring 25 abuts against the fixing block 23, and the other end abuts against the clamping block 112.
[0021] The transverse component 3 includes a second guide rail 31, a second slider 32, a fixed plate 33, a push cylinder 34, and a connecting block 35. The second guide rail 31 is connected to the base 1, and the operating table 11 is fixedly connected to the center of the second guide rail 31. Two second sliders 32 are slidably arranged on the second guide rail 31. The second sliders 32 are connected to the movable block 113. The fixed plate 33 is connected to the base 1. The push cylinder 34 is connected to the fixed plate 33. The piston rod of the push cylinder 34 is parallel to the second guide rail 31. The connecting block 35 is connected to the movable block 113. The piston rod of the push cylinder 34 is connected to the connecting block 35.
[0022] The rotating assembly 5 includes a first bearing housing 51, a connecting plate 52, a first servo motor 53, a first pulley 54, a second pulley 55, and a first synchronous belt 56. The first bearing housing 51 is connected to the movable block 113, the ejector pin 4 is connected inside the first bearing housing 51, the connecting plate 52 is connected to one of the movable blocks 113, the first servo motor 53 is mounted on the connecting plate 52, the first pulley 54 is connected to the output shaft of the first servo motor 53, the second pulley 55 is connected to the ejector pin 4, and the first synchronous belt 56 is wound between the first pulley 54 and the second pulley 55.
[0023] The lifting assembly 6 includes a second servo motor 61, a third pulley 62, a fourth pulley 63, a second synchronous belt 64, a third guide rail 65, a third slider 66, a mounting block 67, and a lifting plate 68. The second servo motor 61 is mounted on a fixed frame 12. The third pulley 62 is connected to the output shaft of the second servo motor 61. A second bearing seat 121 is connected to the fixed frame 12. A rotating shaft 122 is connected inside the second bearing seat 121. The fourth pulley 63 is connected to the rotating shaft 122. The second synchronous belt 64 is wound around the guide rail 65. Between the third pulley 62 and the fourth pulley 63, a third guide rail 65 is connected to the fixed frame 12. The third guide rail 65 is set in the vertical direction. There is one third guide rail 65 on each side of the second synchronous belt 64. The third slider 66 is slidably set on the third guide rail 65. The lifting plate 68 is connected between the two third sliders 66. The mounting plate 13 is set on the lifting plate 68. The mounting block 67 is connected to one of the third sliders 66. The second synchronous belt 64 is clamped between the mounting block 67 and the third slider 66.
[0024] A pad 7 is connected to the lifting plate 68, and a fourth guide rail 71 is connected to the pad 7. The fourth guide rail 71 is set in a vertical direction, and a fourth slider 72 is connected to the fourth guide rail 71. The fourth slider 72 is connected to the mounting plate 13. First fixing posts 132 are connected to opposite sides of the mounting plate 13. A second fixing post 73 is connected to the pad 7 corresponding to the first fixing post 132. The second fixing post 73 is located below the first fixing post 132. A tension spring 8 is connected between the first fixing post 132 and the second fixing post 73.
[0025] The tension spring 8 structure between the mounting plate 13 and the lifting plate 68 provides a buffer when the hardness detection probe 131 hits the impeller, avoiding excessive impact force that could damage the probe or the side wall of the impeller, extending the service life of the equipment and ensuring the integrity of the workpiece.
[0026] An auxiliary plate 74 is connected to the pad 7, and a photoelectric sensor 741 is connected to the auxiliary plate 74. The photoelectric sensor 741 is used to detect whether the first fixed column 132 has moved into place. In this way, the photoelectric sensor 741 can provide real-time feedback on the probe position, and work with the second servo motor 61 to achieve precise lifting control, so as to avoid uneven contact pressure between the probe and the impeller sidewall affecting the detection results.
[0027] The support frame 111 has a waist-shaped hole. The support frame 111 is connected to the operating table 11 by bolts. The support frame 111 is connected to the operating table 11 through the waist-shaped hole, and its position can be flexibly adjusted. With the telescopic clamping block 112 of the elastic sliding component 2, it can be adapted to small car impellers of different diameters and thicknesses, reducing equipment replacement costs.
[0028] The implementation principle of the impeller sidewall hardness testing device in this application embodiment is as follows: Equipment preparation: Check the status of each component of the device to ensure that the elastic sliding component 2, the transverse component 3, the rotating component 5, and the lifting component 6 operate smoothly, and that the photoelectric sensor 741, the hardness detection probe 131, and the external detection system are properly connected.
[0029] Impeller placement and initial positioning: Loosen the bolts on the support frame 111, adjust the position of the support frame 111 through the waist-shaped hole according to the impeller size, tighten the bolts to fix it, place the impeller on the support frame 111, align the impeller shaft hole with the axis direction of the two side pins 4, and the compression spring 25 in the elastic sliding assembly 2 pushes the clamping block 112 to move closer to the impeller along the first guide rail 21, and fits against the outer circumference of the impeller from both sides to achieve temporary positioning of the impeller.
[0030] Precise impeller fixing: Activate the push cylinder 34 of the transverse component 3. The piston rod of the push cylinder 34 drives the movable block 113 to move along the second guide rail 31 towards the impeller through the connecting block 35. The two ejector pins 4 are inserted into the shaft hole of the impeller at the same time until the ejector pins 4 tightly abut against the inner wall of the shaft hole, thus completing the precise fixing of the impeller. At this time, the clamping block 112 maintains the auxiliary limit on the impeller.
[0031] Probe position adjustment: The second servo motor 61 of the lifting assembly 6 is started, driving the third pulley 62 to rotate. The fourth pulley 63 and the rotating shaft 122 are rotated through the second synchronous belt 64. The second synchronous belt 64 drives the mounting block 67 and the third slider 66 to move vertically along the third guide rail 65, thereby driving the lifting plate 68, the mounting plate 13 and the hardness detection probe 131 to descend until the hardness detection probe 131 is close to the preset detection height of the impeller sidewall. The photoelectric sensor 741 detects the position of the first fixed column 132 in real time. When the first fixed column 132 rises to the position, that is, when the probe reaches the detection position, the photoelectric sensor 741 sends a signal and the second servo motor 61 stops running.
[0032] Automated testing: The first servo motor 53 of the rotating component 5 is started. The output shaft of the first servo motor 53 drives the first pulley 54 to rotate. The first synchronous belt 56 drives the second pulley 55 and the ejector pin 4 to rotate. The ejector pin 4 drives the impeller to rotate synchronously. The first servo motor 53 controls the rotation angle according to the preset program and pauses once every 10° rotation. At this time, the lifting component 6 can finely adjust the probe position as needed. The probe hits the side wall of the impeller to complete the hardness test. The test data is transmitted to the external testing system for recording in real time.
[0033] Full circumference testing completed: The impeller continues to rotate to the 360° full circumference testing points, a total of 36 points. After all testing is completed, the rotating component 5 stops running, the lifting component 6 drives the hardness testing probe 131 to rise and reset, the piston rod of the pushing cylinder 34 of the transverse component 3 retracts, the ejector pin 4 disengages from the impeller shaft hole, and the operator removes the tested impeller, completing a single testing process.
[0034] Finally, it should be noted that the above description is only a preferred embodiment of this utility model, and the protection scope of this utility model is not limited to the above embodiments. All technical solutions within the scope of this utility model's concept are within the protection scope of this utility model. It should be pointed out that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.
Claims
1. A device for detecting the hardness of an impeller sidewall, characterized in that: The device includes a base (1), an operating table (11) on the base (1), a support frame (111) for placing an impeller connected to the operating table (11), a clamping block (112) on each side of the support frame (111), an elastic sliding component (2) between the operating table (11) and the clamping block (112), a movable block (113) on each side of the operating table (11), a transverse component (3) between the base (1) and the movable block (113), a pin (4) for fixing the impeller rotatably connected to the movable block (113), a rotating component (5) on the movable block (113), a fixed frame (12) connected to the base (1), a mounting plate (13) on the fixed frame (12), a lifting component (6) between the fixed frame (12) and the mounting plate (13), and a hardness detection probe (131) on the mounting plate (13).
2. The hardness testing device for impeller sidewalls according to claim 1, characterized in that: The elastic sliding assembly (2) includes a first guide rail (21), a first slider (22), a fixing block (23), a guide rod (24), and a compression spring (25). The first guide rail (21) is connected to the operating table (11). Two first sliders (22) are slidably arranged on the first guide rail (21). The first sliders (22) are connected to the clamping block (112). The fixing block (23) is connected to the end of the operating table (11). The guide rod (24) is fixedly connected to the fixing block (23). The guide rod (24) is arranged in a direction parallel to the first guide rail (21). The guide rod (24) is slidably inserted into the clamping block (112). The clamping block (112) has a guide hole. The compression spring (25) is sleeved on the rod of the guide rod (24). One end of the compression spring (25) abuts against the fixing block (23), and the other end abuts against the clamping block (112).
3. The hardness testing device for impeller sidewalls according to claim 1, characterized in that: The transverse component (3) includes a second guide rail (31), a second slider (32), a fixed plate (33), a push cylinder (34), and a connecting block (35). The second guide rail (31) is connected to the base (1). The operating table (11) is fixedly connected to the center of the second guide rail (31). Two second sliders (32) are slidably arranged on the second guide rail (31). The second sliders (32) are connected to the movable block (113). The fixed plate (33) is connected to the base (1). The push cylinder (34) is connected to the fixed plate (33). The piston rod of the push cylinder (34) is parallel to the second guide rail (31). The connecting block (35) is connected to the movable block (113). The piston rod of the push cylinder (34) is connected to the connecting block (35).
4. The hardness testing device for the impeller sidewall according to claim 1, characterized in that: The rotating assembly (5) includes a first bearing housing (51), a connecting plate (52), a first servo motor (53), a first pulley (54), a second pulley (55), and a first synchronous belt (56). The first bearing housing (51) is connected to a movable block (113). The ejector pin (4) is connected inside the first bearing housing (51). The connecting plate (52) is connected to one of the movable blocks (113). The first servo motor (53) is mounted on the connecting plate (52). The first pulley (54) is connected to the output shaft of the first servo motor (53). The second pulley (55) is connected to the ejector pin (4). The first synchronous belt (56) is wound between the first pulley (54) and the second pulley (55).
5. The hardness testing device for the impeller sidewall according to claim 1, characterized in that: The lifting assembly (6) includes a second servo motor (61), a third pulley (62), a fourth pulley (63), a second synchronous belt (64), a third guide rail (65), a third slider (66), a mounting block (67), and a lifting plate (68). The second servo motor (61) is mounted on a fixed frame (12). The third pulley (62) is connected to the output shaft of the second servo motor (61). A second bearing seat (121) is connected to the fixed frame (12). A rotating shaft (122) is connected inside the second bearing seat (121). The fourth pulley (63) is connected to the rotating shaft (122). The second synchronous belt (64) is wound around... Between the third pulley (62) and the fourth pulley (63), the third guide rail (65) is connected to the fixed frame (12). The third guide rail (65) is arranged in a vertical direction. The third guide rail (65) is provided on both sides of the second synchronous belt (64). The third slider (66) is slidably arranged on the third guide rail (65). The lifting plate (68) is connected between the two third sliders (66). The mounting plate (13) is arranged on the lifting plate (68). The mounting block (67) is connected to one of the third sliders (66). The second synchronous belt (64) is sandwiched between the mounting block (67) and the third slider (66).
6. The hardness testing device for impeller sidewalls according to claim 5, characterized in that: A pad (7) is connected to the lifting plate (68), and a fourth guide rail (71) is connected to the pad (7). The fourth guide rail (71) is arranged vertically, and a fourth slider (72) is connected to the fourth guide rail (71). The fourth slider (72) is connected to the mounting plate (13). A first fixing post (132) is connected to each other on opposite sides of the mounting plate (13). A second fixing post (73) is connected to the pad (7) corresponding to the first fixing post (132). The second fixing post (73) is located below the first fixing post (132). A tension spring (8) is connected between the first fixing post (132) and the second fixing post (73).
7. The hardness testing device for impeller sidewalls according to claim 6, characterized in that: An auxiliary plate (74) is connected to the pad (7), and a photoelectric sensor (741) is connected to the auxiliary plate (74). The photoelectric sensor (741) is used to detect whether the first fixed column (132) has moved into place.
8. The hardness testing device for the impeller sidewall according to claim 1, characterized in that: The support frame (111) has a waist-shaped hole, and the support frame (111) is connected to the operating table (11) by bolts.