High-precision heavy-load fretting wear detection device
By designing a high-precision high-load micro-moving wear detection device including support, clamps, cylinders and motors, the problem of existing equipment being unable to simulate wear tests under different working conditions is solved, and high-precision micro-moving wear detection is achieved.
Patent Information
- Application Number
- CN202421236556.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-05-31
AI Technical Summary
Existing micro-moving wear detection equipment cannot effectively simulate the wear test of parts under different working conditions, resulting in low accuracy of the test results.
A high-precision high-load micro-movement wear detection device is designed. Through the combination of support, clamp, cylinder and motor, friction between parts surfaces can be achieved, and the expansion and contraction speed of the cylinder output shaft can be adjusted to simulate wear under different working conditions.
The device can detect the micro-moving wear of parts under high load state with high precision, and simulate different working states by adjusting the friction speed, thereby improving the accuracy of the detection results.
Smart Images
Figure CN222979332U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wear detection, in particular to a high-precision and large-load fretting wear detection device. Background Technique
[0002] Fretting wear refers to a composite form of wear generated due to small-amplitude vibration between mutually pressed metal surfaces. It generally occurs at the tightly fitted journal, the mating part of the steam turbine and compressor blades, the joint surfaces of bolts, rivets and other connectors affected by vibration, the rope and the rope pulley, the piston in the hydraulic device, etc.
[0003] Fretting wear detection is to detect the fretting wear degree of the above-mentioned mechanical parts, which is a test for detecting the quality of parts after production. The existing fretting wear detection equipment generally can only simulate the specific working state of parts and cannot conduct wear tests on them in different working states. For example, the friction speed between two parts cannot be adjusted, resulting in low accuracy of the detection results. Therefore, we provide a high-precision and large-load fretting wear detection device. Content of the Utility Model
[0004] (1) Technical Problems to be Solved
[0005] Aiming at the deficiencies of the prior art, the utility model provides a high-precision and large-load fretting wear detection device, which solves the problem of low accuracy of the detection results of the existing fretting wear detection equipment.
[0006] (2) Technical Solutions
[0007] To achieve the above object, the utility model provides the following technical solutions: A high-precision and large-load fretting wear detection device, including a support. A placement groove is opened on the left side of the top of the support. A first clamping member is arranged in the inner cavity of the placement groove. A support plate is arranged on the right side of the top of the support. A cylinder is arranged on the left side of the support plate. A support frame is arranged on the left side of the output shaft of the cylinder. A second clamping member is arranged in the inner cavity of the support frame. A sliding opening is opened on the right side of the support plate. A ball screw is arranged in the inner cavity of the sliding opening. A motor is arranged on the top of the support plate.
[0008] Preferably, the first clamping member includes a first clamping plate. A threaded rod is rotatably connected to the left side of the first clamping plate. The left side of the threaded rod penetrates through the left side of the inner wall of the placement groove and is provided with a turning handle.
[0009] Preferably, the left side of the support frame is open. Through openings are opened on both the front and back of the support frame. The support frame is located directly above the placement groove.
[0010] Preferably, the second clamping member includes a second clamping plate and two fixing bolts. Thread grooves are formed on both the front and back surfaces of the second clamping plate. One side of each fixing bolt close to the second clamping plate penetrates the inner cavity of the through opening and is inserted into the inner cavity of the thread groove.
[0011] Preferably, the ball screw includes a screw rod. The bottom of the screw rod is rotatably connected to the bottom of the inner wall of the sliding opening, and a movable nut is sleeved on the outer circle of the screw rod.
[0012] Preferably, a slider is arranged on the right side of the air cylinder. The slider is inserted into the inner cavity of the sliding opening. The top of the screw rod sequentially penetrates the bottom of the slider and the top of the inner wall of the sliding opening and is fixedly connected to the output shaft of the motor. The top of the movable nut is fixedly connected to the bottom of the slider.
[0013] (III) Advantageous Effects
[0014] The utility model provides a high-precision and large-load fretting wear detection device, which has the following advantageous effects:
[0015] 1. When the device is detecting, the surfaces of two parts can be made to fit together, and then the air cylinder is opened. Its output shaft can drive the parts inside through the support frame to move left and right continuously. Friction continuously occurs between the surfaces of the two parts, which can simulate the fretting wear of parts under large-load conditions to detect their wear degree. At the same time, the telescopic speed of the output shaft of the air cylinder can be adjusted through gears, so that the speed of part friction can be adjusted, and different working states of parts can be simulated to ensure the high precision of the detection result.
[0016] 2. When the device is detecting, one of the mechanical parts can be placed in the placement groove, and then the mechanical part is clamped in the placement groove by the first clamping plate to fix it. At the same time, the other mechanical part is placed between the second clamping plate and the right side of the inner wall of the support frame, and the fixing bolts are tightened to clamp the part in the support frame by the second clamping plate to fix it. The first clamping member and the placement groove, as well as the second clamping member and the support frame, can fix parts of different sizes, so that it is convenient to detect different parts. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is the overall structural schematic diagram of the utility model;
[0018] Figure 2 is the structural schematic diagram of the support and the first clamping member of the utility model;
[0019] Figure 3 is the structural schematic diagram of the second clamping plate of the utility model;
[0020] Figure 4 is the utility model Figure 1 The enlarged view at A in.
[0021] In the figure: 1, support; 11, placement groove; 2, first clamping member; 21, first clamping plate; 22, threaded rod; 23, turning handle; 3, support plate; 31, sliding opening; 4, cylinder; 41, slider; 5, support frame; 51, through opening; 6, second clamping member; 61, second clamping plate; 62, fixing bolt; 63, threaded groove; 7, ball screw; 71, screw rod; 72, movable nut; 8, motor. Specific implementation manner
[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0023] As Figures 1-4 shown, the present invention provides a technical solution: a high-precision large-load fretting wear detection device, including a support 1. A placement groove 11 is opened on the left side of the top of the support 1. A first clamping member 2 is arranged in the inner cavity of the placement groove 11. The first clamping member 2 includes a first clamping plate 21. A threaded rod 22 is rotatably connected to the left side of the first clamping plate 21. The left side of the threaded rod 22 penetrates through the left side of the inner wall of the placement groove 11 and is provided with a turning handle 23. By rotating the turning handle 23, the threaded rod 22 can be driven to rotate. When the threaded rod 22 rotates clockwise, the first clamping plate 21 can move to the right. When it rotates counterclockwise, the first clamping plate 21 can move to the left.
[0024] In specific use, during wear detection, one of the mechanical parts can be placed in the placement groove 11, and then hold the turning handle 23 and rotate the threaded rod 22 clockwise. At this time, the first clamping plate 21 can move to the right and clamp the mechanical part in the placement groove 11 to fix it. The first clamping member 2 and the placement groove 11 can fix parts of different sizes.
[0025] Among them, a support plate 3 is arranged on the right side of the top of the support 1. A cylinder 4 is arranged on the left side of the support plate 3. A motor 8 is arranged on the top of the support plate 3. The left side of the output shaft of the cylinder 4 is provided with a support frame 5. The left side of the support frame 5 is open. Through openings 51 are opened on both the front and back of the support frame 5. The support frame 5 is located directly above the placement groove 11.
[0026] Furthermore, a second clamping member 6 is arranged in the inner cavity of the support frame 5. The second clamping member 6 includes a second clamping plate 61 and two fixing bolts 62. Threaded grooves 63 are opened on both the front and back of the second clamping plate 61. The side of the fixing bolt 62 close to the second clamping plate 61 penetrates through the inner cavity of the through opening 51 and is inserted into the inner cavity of the threaded groove 63.
[0027] In specific use, when detecting wear, the fixing bolt 62 can be loosened, and then another mechanical part can be placed between the second clamping plate 61 and the right side of the inner wall of the support frame 5. Then, the second clamping plate 61 is moved to the right and fitted to the surface of the part. At the same time, the surface of the part is fitted to the right side of the inner wall of the support frame 5. Then, the fixing bolt 62 is tightened to clamp the part in the support frame 5 through the second clamping plate 61 to fix it. The second clamping part 6 and the support frame 5 can fix parts of different sizes.
[0028] Among them, a sliding opening 31 is formed on the right side of the support plate 3, and a ball screw 7 is arranged in the inner cavity of the sliding opening 31. The ball screw 7 includes a screw rod 71, the bottom of the screw rod 71 is rotatably connected to the bottom of the inner wall of the sliding opening 31, and a movable nut 72 is sleeved outside the screw rod 71. When the screw rod 71 rotates clockwise, the movable nut 72 can move downward. When the screw rod 71 rotates counterclockwise, the movable nut 72 can move upward.
[0029] Furthermore, a slider 41 is arranged on the right side of the air cylinder 4. The slider 41 is inserted into the inner cavity of the sliding opening 31. The top of the screw rod 71 sequentially penetrates through the bottom of the slider 41 and the top of the inner wall of the sliding opening 31 and is fixedly connected to the output shaft of the motor 8. The top of the movable nut 72 is fixedly connected to the bottom of the slider 41.
[0030] In specific use, after both test parts are fixed, the forward rotation switch of the motor 8 is turned on, and its output shaft can drive the screw rod 71 to rotate clockwise. At this time, the movable nut 72 can drive the air cylinder 4 to move downward through the slider 41, and at the same time drive the part inside it downward through the support frame 5, so that the surfaces of the two parts can be fitted. Then, the air cylinder 4 is turned on, and its output shaft can drive the part inside it to move left and right continuously through the support frame 5, and the surfaces of the two parts keep rubbing, which can simulate the fretting wear of the parts under a large load state to detect their wear degree. At the same time, the telescopic speed of the output shaft of the air cylinder 4 can be adjusted by gears, so that the speed of part friction can be adjusted, and different working states of the parts can be simulated to ensure the high precision of the detection results.
[0031] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.
[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A high-precision, high-load micro-motion wear detection device, comprising a support (1), characterized in that: A placement groove (11) is provided on the left side of the top of the support (1), and a first clamp (2) is arranged in the inner cavity of the placement groove (11); a support plate (3) is provided on the right side of the top of the support (1); a cylinder (4) is provided on the left side of the support plate (3); a support frame (5) is provided on the left side of the output shaft of the cylinder (4); a second clamp (6) is provided in the inner cavity of the support frame (5); a sliding opening (31) is provided on the right side of the support plate (3), and a ball screw (7) is provided in the inner cavity of the sliding opening (31); and a motor (8) is provided on the top of the support plate (3).
2. A high-precision, high-load fretting wear detection device according to claim 1, characterized in that: The first clamp (2) comprises a first clamp plate (21), the left side of the first clamp plate (21) is rotatably connected to a threaded rod (22), the left side of the threaded rod (22) passes through the left side of the inner wall of the placement groove (11) and is provided with a turning handle (23).
3. A high-precision, high-load fretting wear detection device according to claim 1, characterized in that: The left side of the support frame (5) is open, and through openings (51) are provided on the front and back sides of the support frame (5). The support frame (5) is located directly above the placement groove (11).
4. A high-precision, high-load fretting wear detection device according to claim 1, characterized in that: The second clamp (6) comprises a second clamping plate (61) and two fixing bolts (62). The front and back sides of the second clamping plate (61) are both provided with thread grooves (63). The fixing bolts (62) pass through the inner cavity of the through opening (51) on the side close to the second clamping plate (61) and are inserted into the inner cavity of the thread groove (63).
5. The high-precision, high-load fretting wear detection device according to claim 1, characterized in that: The ball screw (7) comprises a screw rod (71), the bottom of which is rotatably connected to the bottom of the inner wall of the sliding opening (31), and the outer ring of the screw rod (71) is provided with a movable nut (72).
6. A high-precision, high-load fretting wear detection device according to claim 5, characterized in that: A slider (41) is provided on the right side of the cylinder (4), and the slider (41) is inserted into the inner cavity of the sliding mouth (31). The top of the screw rod (71) passes through the bottom of the slider (41) and the top of the inner wall of the sliding mouth (31) in sequence and is fixedly connected to the output shaft of the motor (8). The top of the movable nut (72) is fixedly connected to the bottom of the slider (41).