Novel jig of air spring fatigue test bench
By designing a new fixture for the air spring fatigue test bench, using a quick disassembly mechanism and a motor-driven pulley system, the problems of single air spring models and slow testing speed in the existing technology are solved, and a rapid test and efficient testing process for multiple models are achieved.
Patent Information
- Application Number
- CN202422040435.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-22
AI Technical Summary
The existing air spring fatigue test bench tests have a single air spring model, which cannot cover multiple models, and the test speed is slow, making it impossible to achieve tests under fast compression or tensile conditions.
A new type of fixture for air spring fatigue test bench was designed, using a quick disassembly mechanism and a motor-driven pulley system to achieve rapid replacement and testing of multiple air spring models, and to achieve rapid compression or tensile testing through linkage arms and push rods.
A rapid test of multiple air spring models is achieved, testing efficiency is improved, and it can be quickly compressed or stretched under one motor drive, and two air springs can be tested at a time.
Smart Images
Figure CN222913049U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of air springs, in particular to a new fixture for an air spring fatigue test bench. Background Technique
[0002] An air spring fatigue test bench is a key device used to evaluate and verify the durability and performance stability of air springs during long-term use. It conducts continuous fatigue tests on air springs by simulating cyclic loads under real working conditions to detect the fatigue limit of materials, failure modes, and their life predictions. This kind of device usually combines advanced control systems and precise data acquisition technologies, which can monitor and record key parameters during the test process in real time to ensure the accuracy and reliability of the test. The development of air spring fatigue test benches not only promotes the progress and application of air spring technology but also provides important support for product design and safety assessment in fields such as automobiles, aerospace, and construction machinery;
[0003] An air spring fatigue test bench is a special device used to evaluate the durability and performance of air springs under actual use conditions. Its structure usually includes a main structure, a load application system, a data acquisition and analysis system, and a control system. The working principle is based on simulating cyclic loads in the actual working environment, and different mechanical loads are applied to the air spring in a program-controlled manner to simulate its stress state and life during long-term use. This device uses advanced engineering principles and precise measurement technologies to ensure the accuracy and repeatability of the test, providing key engineering support for air spring design and performance optimization;
[0004] In the prior art, some air spring fatigue test benches have a single type of air spring being tested, unable to cover multiple types, resulting in a significant increase in test costs; and the test speed is slow, the test cycle is long, the test of rapid compression or stretching conditions cannot be achieved, and only a single spring can be tested each time. Therefore, a new fixture for an air spring fatigue test bench is proposed to solve the above problems. Content of the Utility Model
[0005] In order to make up for the above deficiencies, the utility model provides a new fixture for an air spring fatigue test bench, aiming to improve the problems in the prior art that some air spring fatigue test benches have a single type of air spring being tested and cannot cover multiple types; and the test speed is slow and the test under rapid compression or stretching conditions cannot be achieved.
[0006] To achieve the above object, the utility model adopts the following technical solutions: A new fixture for an air spring fatigue test bench, including a bottom plate, a motor is fixedly connected to the right side of the rear part of the bottom plate, a first pulley is fixedly connected to the output end of the motor, two vertical plates are fixedly connected to the left and right sides of the upper part of the bottom plate at equal intervals, a first fixing plate is fixedly connected to the middle between the vertical plates, a second fixing plate is fixedly connected to the upper part between the vertical plates, a rotating shaft is rotatably connected between the lower sides of the middle vertical plates, a second pulley is fixedly connected to the middle of the rotating shaft, both ends of the rotating shaft penetrate through the two middle vertical plates and are fixedly connected with flywheels, one ends of short rods are fixedly connected to the middle sides of the flywheels on the far - away sides, the other ends of the short rods are rotatably connected to the lower sides of the linkage arms, mounting plates are fixedly connected to the upper parts of the linkage arms, first rotating blocks are fixedly connected to both sides of the upper parts of the mounting plates, second rotating blocks are rotatably connected between the first rotating blocks, push rods are fixedly connected to the upper parts of the second rotating blocks and penetrate through the first fixing plate, hydraulic rods are fixedly connected to the upper parts of the second fixing plates, and quick - release mechanisms are arranged at the output ends of the hydraulic rods and the upper ends of the push rods;
[0007] As a further description of the above technical solution: The quick - release mechanism includes a first circular plate, first circular plates are fixedly connected to the output ends of the hydraulic rods and the upper ends of the push rods, two clamping grooves are equidistantly opened on the relatively close sides of the first circular plates, clamping bars are slidably arranged inside the clamping grooves, second circular plates are fixedly connected to the clamping bars, long cylindrical grooves are opened on the relatively close sides inside the clamping grooves, short cylindrical grooves are opened on the relatively far - away sides inside the clamping grooves, threaded holes are opened on the outer sides of the short cylindrical grooves, cylindrical holes are opened on the front sides of the middles of the clamping bars, screw rods are threadedly connected to the threaded holes, one ends of straight rods are fixedly connected to the relatively close ends of the screw rods, and round blocks are fixedly connected to the other ends of the straight rods;
[0008] As a further description of the above technical solution: One ends of air springs are arranged in the middle of the upper parts of the lower second circular plates, the other ends of the air springs are arranged at the lower parts of the mounting frames, pressure sensors are arranged on the upper parts of the mounting frames, and the upper parts of the pressure sensors are arranged in the middle of the lower parts of the upper second circular plates;
[0009] As a further description of the above technical solution: The straight rods are slidably arranged inside the short cylindrical grooves, cylindrical holes and threaded holes;
[0010] As a further description of the above technical solution: The round blocks are slidably arranged inside the long cylindrical grooves, short cylindrical grooves, cylindrical holes and threaded holes and the round blocks are in contact with the long cylindrical grooves, short cylindrical grooves and cylindrical holes respectively;
[0011] As a further description of the above technical solution: A belt is arranged between the first pulley and the second pulley;
[0012] As a further description of the above technical solution: Two reinforcing blocks are fixedly connected between the two middle vertical plates and the bottom plate, and two reinforcing blocks are fixedly connected between the left and right vertical plates and the bottom plate on the far side;
[0013] As a further description of the above technical solution: Knobs are fixedly connected to the far ends of the screws.
[0014] The utility model has the following beneficial effects:
[0015] 1. In the utility model, through the cooperation of structures such as the quick-release mechanism, when it is necessary to test various air spring models, only need to rotate the knob on the first circular plate, pull out the screw with the straight rod from the short cylindrical groove until it is blocked by the round block to prevent loss after disassembly; then, pull out the second circular plate with the card strip together with the mounting frame, pressure sensor and air spring, which is convenient to replace different mounting frames, pressure sensors and air springs to adapt to different tests; then put the second circular plate with the card strip into the first circular plate with the card slot and fix it with the screw, so that various air spring models can be tested.
[0016] 2. In the utility model, with the cooperation of structures such as the motor, the first pulley of the motor drives the second pulley of the rotating shaft, and the flywheels arranged at both ends of the rotating shaft cooperate with the linkage arm to move, so as to drive the push rod, and the air spring can be quickly tested; only one motor is used to realize the quick compression or stretching test, and two air springs can be tested each time, effectively improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is the overall structure diagram of a new fixture for an air spring fatigue test bench proposed by the utility model;
[0018] Figure 2 It is the rear view of a new fixture for an air spring fatigue test bench proposed by the utility model;
[0019] Figure 3 It is Figure 1 The detailed expansion diagram of the quick-release mechanism in the overall structure diagram;
[0020] Figure 4 It is Figure 1 The cross-sectional view of the quick-release mechanism in the overall structure diagram;
[0021] Figure 5 It is Figure 1 The detailed enlarged view of part A in the figure.
[0022] Legend:
[0023] 1. Bottom plate; 2. Vertical plate; 3. First fixing plate; 4. Second fixing plate; 5. Hydraulic rod; 6. Quick-release mechanism; 601. First circular plate; 602. Second circular plate; 603. Card slot; 604. Card strip; 605. Cylindrical hole; 606. Screw; 607. Straight rod; 608. Round block; 609. Threaded hole; 6010. Long cylindrical groove; 6011. Short cylindrical groove; 6012. Knob; 7. Installation frame; 8. Pressure sensor; 9. Rotating shaft; 10. Flywheel; 11. Motor; 12. First pulley; 13. Second pulley; 14. Belt; 15. Air spring; 16. Short rod; 17. Linkage arm; 18. First rotating block; 19. Second rotating block; 20. Installation plate; 21. Push rod; 22. Reinforcing block. Detailed implementation manners
[0024] 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.
[0025] Refer to Figures 1-5, A new fixture embodiment of an air spring fatigue test bench provided by the present utility model: A new fixture for an air spring fatigue test bench, including a bottom plate 1. A motor 11 is fixedly connected to the right side of the rear part of the bottom plate 1. The output end of the motor 11 is fixedly connected to a first pulley 12. Two vertical plates 2 are equidistantly and fixedly connected to the upper left and right sides of the bottom plate 1. A first fixing plate 3 is fixedly connected to the middle between the vertical plates 2. A second fixing plate 4 is fixedly connected to the upper part between the vertical plates 2. A rotating shaft 9 is rotatably connected between the lower sides of the middle vertical plates 2. A second pulley 13 is fixedly connected to the middle of the rotating shaft 9. The two ends of the rotating shaft 9 penetrate through the two middle vertical plates 2 and are fixedly connected to flywheels 10. One end of a short rod 16 is fixedly connected to the middle side of one side of the flywheels 10 away from each other. The other end of the short rod 16 is rotatably connected to the lower side of one side of a linkage arm 17. An installation plate 20 is fixedly connected to the upper part of the linkage arm 17. Two first rotating blocks 18 are fixedly connected to both sides of the upper part of the installation plate 20. A second rotating block 19 is rotatably connected between the first rotating blocks 18. A push rod 21 is fixedly connected to the upper part of the second rotating block 19 and penetrates through the first fixing plate 3. A hydraulic rod 5 is fixedly connected to the upper part of the second fixing plate 4. A quick-release mechanism 6 is provided at the output end of the hydraulic rod 5 and the upper end of the push rod 21; The quick-release mechanism 6 includes a first circular plate 601. The output end of the hydraulic rod 5 and the upper end of the push rod 21 are both fixedly connected to a first circular plate 601. Two clamping grooves 603 are equidistantly opened on the side close to each other of the first circular plates 601. A clamping bar 604 slides inside each of the clamping grooves 603. The clamping bars 604 are all fixedly connected to a second circular plate 602. A long cylindrical groove 6010 is opened on the side close to each other inside the clamping groove 603. A short cylindrical groove 6011 is opened on the side away from each other inside the clamping groove 603. A threaded hole 609 is opened on the outside of the short cylindrical groove 6011. A cylindrical hole 605 is opened on the front side of the middle of each clamping bar 604. A screw 606 is threadedly connected to each threaded hole 609. One end of a straight rod 607 is fixedly connected to the end of the screw 606 close to each other. The other end of the straight rod 607 is fixedly connected to a round block 608. One end of an air spring 15 is provided in the middle of the upper part of the lower second circular plate 602. The other end of the air spring 15 is provided at the lower part of an installation frame 7. A pressure sensor 8 is provided at the upper part of the installation frame 7. The upper part of the pressure sensor 8 is provided at the middle of the lower part of the upper second circular plate 602. The straight rods 607 slide inside the short cylindrical groove 6011, the cylindrical hole 605 and the threaded hole 609. The round blocks 608 slide inside the long cylindrical groove 6010, the short cylindrical groove 6011, the cylindrical hole 605 and the threaded hole 609 and the round blocks 608 are respectively in contact with the long cylindrical groove 6010, the short cylindrical groove 6011 and the cylindrical hole 605. A belt 14 is provided between the first pulley 12 and the second pulley 13. Two reinforcing blocks 22 are fixedly connected between the two middle vertical plates 2 and the bottom plate 1. Two reinforcing blocks 22 are fixedly connected between the sides away from each other of the left and right vertical plates 2 and the bottom plate 1. One end away from each other of the screws 606 is fixedly connected to a knob 6012.
[0026] By arranging a motor 11 at the rear of the bottom plate 1, a first pulley 12 is connected to the output end of the motor 11. A rotating shaft 9 rotates between the lower sides of the middle vertical plates 2. A second pulley 13 is arranged in the middle of the rotating shaft 9. Both ends of the rotating shaft 9 penetrate through the two middle vertical plates 2 and are connected with flywheels 10. Short rods 16 are respectively connected to the outsides of the flywheels 10 on the far - away sides. The short rods 16 are connected with linkage arms 17. Upper parts of the linkage arms 17 are respectively fixed with mounting plates 20. Both sides of the upper parts of the mounting plates 20 are connected with first rotating blocks 18. Second rotating blocks 19 rotate between the first rotating blocks 18. Upper parts of the second rotating blocks 19 are respectively fixed with push rods 21. By driving the second pulley 13 of the rotating shaft 9 through the first pulley 12 of the motor 11, and the flywheels 10 arranged at both ends of the rotating shaft 13, cooperating with the movement of the linkage arms 17, the push rods 21 can be driven, so that the air springs 15 can be quickly tested. Only one motor 11 is used, which realizes the test of rapid compression or stretching, and two air springs 15 can be tested each time. And by cooperating, quick - release mechanisms 6 are arranged at the output end of the hydraulic rod 5 and the upper end of the push rod 21. Just rotate the knob 6012 on the first circular plate 601, and pull out the screw rod 606 with the straight rod 607 from the short cylindrical groove 6011 until it is blocked by the round block 608 to prevent loss after disassembly. Then, pull out the second circular plate 602 with the card strip 604 together with the mounting frame 7, the pressure sensor 8 and the air spring 15, which is convenient for replacing different mounting frames 7, pressure sensors 8 and air springs 15 to adapt to different tests. After that, put the second circular plate 602 with the card strip 604 into the first circular plate 601 with the card slot 603, and then fix it with the screw rod 606, so that various models of air springs 15 can be tested. The pressure sensor 8 adopts the TJE series pressure sensor of Honeywell company, which is a strain - gauge type sensor with high precision and high reliability.
[0027] Working principle: By arranging a motor 11 at the rear of the bottom plate 1, a first pulley 12 is connected to the output end of the motor 11. A rotating shaft 9 rotates between the lower sides of the middle vertical plates 2. A second pulley 13 is arranged in the middle of the rotating shaft 9. Both ends of the rotating shaft 9 penetrate through the two middle vertical plates 2 and are connected with flywheels 10. Short rods 16 are connected to the outside of the flywheels 10 on the far - away sides. The short rods 16 are connected with linkage arms 17. Upper parts of the linkage arms 17 are fixedly provided with mounting plates 20. Both sides of the upper parts of the mounting plates 20 are connected with first rotating blocks 18. Second rotating blocks 19 rotate between the first rotating blocks 18. Push rods 21 are fixedly provided on the upper parts of the second rotating blocks 19. The first pulley 12 of the motor 11 drives the second pulley 13 of the rotating shaft 9, and the flywheels 10 arranged at both ends of the rotating shaft 13 cooperate with the movement of the linkage arms 17, thereby driving the push rods 21, enabling rapid testing of the air springs 15. By using only one motor 11, rapid compression or stretching tests are achieved, and two air springs 15 can be tested each time. Moreover, quick - release mechanisms 6 are arranged at the output ends of the hydraulic rods 5 and the upper ends of the push rods 21. Just rotate the knob 6012 on the first circular plate 601, and pull out the screw rod 606 with the straight rod 607 from the short cylindrical groove 6011 until it is blocked by the round block 608 to prevent loss after disassembly. Then, pull out the second circular plate 602 with the card strip 604 together with the mounting frame 7, the pressure sensor 8, and the air spring 15, which is convenient for replacing different mounting frames 7, pressure sensors 8, and air springs 15 to adapt to different tests. After that, put the second circular plate 602 with the card strip 604 into the first circular plate 601 with the card slot 603, achieving rapid replacement and compression or stretching tests, and two springs can be tested each time, effectively improving the working efficiency.
[0028] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A novel fixture for an air spring fatigue test bench, comprising a bottom plate (1), characterized in that: A motor (11) is fixedly connected to the right side of the rear of the bottom plate (1), and a first pulley (12) is fixedly connected to the output end of the motor (11). Two vertical plates (2) are fixedly connected to the left and right sides of the upper part of the bottom plate (1) at equal distances. A first fixed plate (3) is fixedly connected to the middle of the vertical plates (2), and a second fixed plate (4) is fixedly connected to the upper part of the vertical plates (2). A rotating shaft (9) is rotatably connected between the lower sides of the vertical plates (2) in the middle, and a second pulley (13) is fixedly connected to the middle of the rotating shaft (9). Both ends of the rotating shaft (9) penetrate the two vertical plates (2) in the middle and are fixedly connected to a flywheel (10). The flywheel (10) on the far side is One side of each of the two linkage arms (17) is fixedly connected with one end of a short rod (16), the other end of each of the two linkage arms (17) is rotatably connected to the lower side of the linkage arm (17), the upper part of each of the two linkage arms (17) is fixedly connected with a mounting plate (20), both sides of the upper part of each of the two mounting plates (20) are fixedly connected with a first rotating block (18), a second rotating block (19) is rotatably connected between the first rotating blocks (18), the upper part of each of the two second rotating blocks (19) is fixedly connected with a push rod (21) and passes through the first fixed plate (3), the upper part of each of the two second fixed plates (4) is fixedly connected with a hydraulic rod (5), and a quick release mechanism (6) is provided at the output end of each of the two hydraulic rods (5) and the upper end of the push rod (21).
2. The novel fixture for an air spring fatigue test bench according to claim 1 is characterized in that: The quick-release mechanism (6) comprises a first circular plate (601), the output end of the hydraulic rod (5) and the upper end of the push rod (21) are both fixedly connected to the first circular plate (601), two slots (603) are equidistantly provided on the adjacent sides of the first circular plate (601), a clip strip (604) is slidably provided inside the slots (603), and the clip strips (604) are fixedly connected to the second circular plate (602), and a long cylindrical slot (6010) is provided on the adjacent sides of the slots (603). ), a short cylindrical groove (6011) is provided on the inner side of the clamping slot (603) away from the inner side, a threaded hole (609) is provided on the outer side of the short cylindrical groove (6011), a cylindrical hole (605) is provided on the middle front side of the clamping strip (604), a screw rod (606) is threadedly connected to the threaded hole (609), one end of the screw rod (606) is fixedly connected to the end of the straight rod (607), and the other end of the straight rod (607) is fixedly connected to a round block (608).
3. The novel fixture for the air spring fatigue test bench according to claim 2 is characterized by: One end of an air spring (15) is arranged at the middle of the upper part of the second circular plate (602) on the lower side, and the other end of the air spring (15) is arranged at the lower part of the mounting frame (7). A pressure sensor (8) is arranged at the upper part of the mounting frame (7), and the upper part of the pressure sensor (8) is arranged at the middle of the lower part of the second circular plate (602) on the upper side.
4. The novel fixture for an air spring fatigue test bench according to claim 2 is characterized in that: The straight rods (607) all slide inside the short cylindrical grooves (6011), the cylindrical holes (605) and the threaded holes (609).
5. The novel fixture for the air spring fatigue test bench according to claim 2 is characterized by: The round blocks (608) all slide inside the long cylindrical groove (6010), the short cylindrical groove (6011), the cylindrical hole (605) and the threaded hole (609), and the round blocks (608) are in contact with the long cylindrical groove (6010), the short cylindrical groove (6011) and the cylindrical hole (605) respectively.
6. The novel fixture for an air spring fatigue test bench according to claim 1 is characterized by: The first belt pulley (12) and the second belt pulley (13) are provided with belts (14).
7. The novel fixture for an air spring fatigue test bench according to claim 1 is characterized in that: Two reinforcement blocks (22) are fixedly connected to the bottom plate (1) between the two middle vertical plates (2), and two reinforcement blocks (22) are fixedly connected to the bottom plate (1) on the sides of the left and right vertical plates (2) that are away from each other.
8. The novel fixture for an air spring fatigue test bench according to claim 2 is characterized by: The ends of the screw rods (606) that are away from each other are fixedly connected with knobs (6012).