Hydraulic hose torsion test device for simulating bending fatigue

Abstract

The utility model relates to the technical field of torsion test equipment, and discloses a hydraulic hose torsion test device for simulating bending fatigue, which comprises a base, a central support table fixedly mounted on the base, a workbench fixedly mounted on the central support table, and a controller fixedly mounted on the base close to the workbench, a transmission ring is movably installed at the bottom in the center supporting table, rotating shafts are rotationally installed at the positions, on the two sides of the transmission ring, of the bottom in the center supporting table, and driven gears are fixedly installed on the outer sides of the rotating shafts. The driving gear is arranged at the output end of the motor, the driving gear can be matched with the transmission ring and the two driven gears to synchronously drive the two swing arms to rotate in a reciprocating mode, the swing arms are arranged on the outer side of the rotating shaft, and the first clamp is further arranged on the mounting base in the swing arms, so that a fan-shaped distortion test on the hydraulic hose is achieved in cooperation with the second clamp on the rotating shaft. The angle reciprocating change of the hose in the plane can be reproduced, and the angle reciprocating change is closer to the twisting-resetting-reverse twisting circulation process in real work.

Description

Technical Field

[0001] The utility model relates to the technical field of torsion test equipment, in particular to a hydraulic hose torsion test device for simulating bending fatigue. Background Art

[0002] Hydraulic hoses are flexible pipes used to transmit hydraulic oil, hydraulic fluid and other fluids in hydraulic systems. They are mainly composed of an inner rubber layer, a reinforcement layer and an outer rubber layer. They are widely used in engineering machinery, automobiles, aerospace, metallurgy and other fields, such as excavator hydraulic systems and automobile power steering devices.

[0003] In hydraulic systems, hydraulic hoses are key components for transmitting power and fluids, and their reliability directly affects the operational safety and life of the equipment. Therefore, the produced hydraulic hoses need to be subjected to load tests such as torsion and tension. When existing equipment performs torsion tests on hydraulic hoses, most of the equipment can only achieve unidirectional rotational twisting operations, resulting in deviations between the test results and the actual stress scenario. For example, when the excavator's arm swings, the hose needs to be twisted back and forth within a certain angle range, and traditional unidirectional rotation tests are difficult to expose local fatigue problems under such cyclic stress. In addition, in actual working conditions, hose twisting is often accompanied by changes in bending radius and fluid pressure fluctuations, but traditional devices are mostly static or single load tests, which cannot simulate the combined effects of twisting-bending-pressure and are prone to missing failure risks caused by multi-stress coupling. Utility Model Content

[0004] The purpose of the utility model is to provide a hydraulic hose torsion test device for simulating bending fatigue, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A hydraulic hose torsion test device simulating bending fatigue comprises a base, a center support platform is fixedly mounted on the base, a workbench is fixedly mounted on the center support platform, a controller is fixedly mounted on the base near the workbench, a transmission ring is movably mounted on the inner bottom of the center support platform, a rotating shaft is rotatably mounted on the inner bottom of the center support platform located on both sides of the transmission ring, a driven gear is fixedly mounted on the outer side of the rotating shaft, a swing arm is fixedly mounted on the outer side of the rotating shaft, a mounting seat is movably mounted on the swing arm, a first carrier plate is fixedly mounted on the mounting seat, a first clamp is fixedly mounted on one side of the first carrier plate, a center frame is fixedly mounted on the center support platform, two second carrier plates are fixedly mounted on the center frame, and second clamps are respectively fixedly mounted on opposite sides of the two second carrier plates.

[0007] As a further preferred embodiment of the present invention, a motor is fixedly installed at the bottom of the base, the motor is electrically connected to the controller through a cable, and the output end of the motor extends into the central support platform and is fixedly installed with a driving gear, and the circumferential distribution length of the outer teeth of the driving gear along the outer contour of the driving gear is half of the circumference of the outer contour of the driving gear. The output end of the motor is passed through the base and extended into the central support platform, so that the driving gear at the output end of the motor can provide a power source for the reciprocating movement of the transmission ring.

[0008] As a further preferred solution of the present invention, two first guide rails are fixedly installed on the bottom inner side of the central support platform. The arrangement of the two first guide rails can provide a moving basis for the horizontal radial movement of the transmission ring.

[0009] As a further preferred solution of the present invention, first tooth grooves are provided on both sides of the transmission ring, second tooth grooves are provided on both sides of the transmission ring, and a plurality of second sliders are fixedly installed on the bottom of the transmission ring, the second sliders are slidably connected to one of the first guide rails, and one of the second tooth grooves is meshed with the driving gear, and the first tooth groove is meshed with one of the driven gears. By setting the transmission ring with second tooth grooves and first tooth grooves on the inner and outer sides respectively, the driving gear with half-width teeth on the outer side can be coordinated to synchronize the reciprocating rotation of the two driven gears, thereby causing the rotating shaft to rotate reciprocally.

[0010] As a further preferred solution of the present invention, a plurality of brackets are fixedly installed on the workbench, and the plurality of brackets are circumferentially arranged with the center point of the workbench as the axis, and a second guide rail is fixedly installed on the plurality of brackets, and a first slider is slidably installed on the second guide rail. The cooperation between the second guide rail and the first slider can provide additional support points for the swing arm, thereby ensuring the stability of the reciprocating fan-shaped motion of the swing arm.

[0011] As a further preferred embodiment of the present invention, an adjustment groove is provided in the swing arm, and the opening of the adjustment groove can provide conditions for the sliding installation of the mounting seat. A plurality of limit grooves are provided at the bottom of the adjustment groove, and the setting of the limit grooves can provide conditions for limiting the mounting seat slidably installed in the adjustment groove.

[0012] As a further preferred embodiment of the present invention, a slot is provided at the bottom of the mounting seat, an L-shaped insert is inserted into the slot, and the lower end of the L-shaped insert is also inserted into one of the limit slots. The mounting seat can cooperate with the first carrier plate to drive the first clamp to adjust the horizontal position, thereby adjusting it according to the length of the hydraulic hose.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In the utility model, a driving gear is provided on the output end of the motor, so that the driving gear can cooperate with the transmission ring and the two driven gears to synchronously drive the two swing arms to rotate back and forth, and the swing arm is provided on the outer side of the rotating shaft. A first clamp is also provided on the mounting seat inside the swing arm, so as to cooperate with the second clamp on the rotating shaft to realize the fan-shaped twisting test of the hydraulic hose, which can reproduce the reciprocating angle change of the hose in the plane, and is closer to the "twist-reset-reverse twist" cycle process in real work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 This is a bottom view of the main structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the active gear structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the transmission ring structure of the utility model;

[0019] Figure 5 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 6 for Figure 1 Enlarged view of point B in the middle;

[0021] Figure 7 This is a cross-sectional view of the mounting base of the present utility model.

[0022] In the figure: 1. Base; 2. Center support platform; 3. Transmission ring; 4. Rotating shaft; 5. Driven gear; 6. Swing arm; 7. Mounting seat; 8. First carrier plate; 9. First fixture; 10. Second carrier plate; 11. Second fixture; 12. Workbench; 13. Motor; 14. Driving gear; 15. First guide rail; 16. Bracket; 17. Second guide rail; 18. First slider; 19. First tooth groove; 20. Second tooth groove; 21. Second slider; 22. Adjustment slot; 23. Limiting slot; 24. Slot; 25. L-shaped plug plate; 26. Controller; 27. Center frame. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] like Figure 1-Figure 7As shown, the utility model provides a hydraulic hose torsion test device simulating bending fatigue, comprising a base 1, a central support platform 2 fixedly mounted on the base 1, a workbench 12 fixedly mounted on the central support platform 2, a controller 26 fixedly mounted on the base 1 near the workbench 12, a transmission ring 3 movably mounted on the inner bottom of the central support platform 2, a rotating shaft 4 rotatably mounted on the inner bottom of the central support platform 2 located on both sides of the transmission ring 3, a driven gear 5 fixedly mounted on the outer side of the rotating shaft 4, a swing arm 6 fixedly mounted on the outer side of the rotating shaft 4, a mounting seat 7 movably mounted on the swing arm 6, a first carrier plate 8 fixedly mounted on the mounting seat 7, a first clamp 9 fixedly mounted on one side of the first carrier plate 8, a central frame 27 fixedly mounted on the central support platform 2, two second carrier plates 10 fixedly mounted on the central frame 27, and second clamps 11 fixedly mounted on opposite sides of the two second carrier plates 10.

[0025] like Figures 1-4 As shown, a motor 13 is fixedly installed at the bottom of the base 1, and the motor 13 is electrically connected to the controller 26 through a cable, and the output end of the motor 13 extends into the center support platform 2 and is fixedly installed with a driving gear 14. The circumferential distribution length of the outer teeth of the driving gear 14 along the outer contour of the driving gear 14 is half of the circumference of the outer contour of the driving gear 14. The output end of the motor 13 passes through the base 1 and extends into the center support platform 2. The driving gear 14 at the output end of the motor 13 can provide a power source for the reciprocating movement of the transmission ring 3. Two first guide rails 15 are fixedly installed at the bottom of the center support platform 2. The setting of the two first guide rails 15 can provide a power source for the transmission ring 3 provides a movement basis, first tooth grooves 19 are provided on both sides of the transmission ring 3, second tooth grooves 20 are provided on both sides of the transmission ring 3, and a plurality of second sliders 21 are fixedly installed on the bottom of the transmission ring 3, and the second sliders 21 are slidably connected to one of the first guide rails 15, and one of the second tooth grooves 20 is meshed with the driving gear 14, and the first tooth groove 19 is meshed with one of the driven gears 5. By setting the transmission ring 3 with the second tooth grooves 20 and the first tooth grooves 19 respectively provided on the inner and outer sides, the driving gear 14 with half-width teeth provided on the outer side can be coordinated with the synchronous reciprocating rotation of the two driven gears 5, thereby causing the rotating shaft 4 to rotate reciprocatingly.

[0026] like Figure 1 、 Figure 5-Figure 7As shown, a plurality of brackets 16 are fixedly mounted on the workbench 12, and the plurality of brackets 16 are arranged circumferentially with the center point of the workbench 12 as the axis, and a second guide rail 17 is fixedly mounted on the plurality of brackets 16, and a first slider 18 is slidably mounted on the second guide rail 17. The cooperation between the second guide rail 17 and the first slider 18 can provide an additional support point for the swing arm 6 to ensure the stability of the reciprocating fan-shaped motion of the swing arm 6. An adjusting slot 22 is provided in the swing arm 6. The provision of the adjusting slot 22 can provide conditions for the sliding installation of the mounting seat 7. A plurality of limiting slots 23 are provided at the bottom of the adjusting slot 22. The provision of the limiting slot 23 can provide conditions for limiting the mounting seat 7 slidably mounted in the adjusting slot 22. A slot 24 is provided at the bottom of the mounting seat 7, and an L-shaped insert 25 is inserted in the slot 24. The lower end of the L-shaped insert 25 is also inserted in one of the limiting slots 23. The mounting seat 7 can cooperate with the first carrier plate 8 to drive the first clamp 9 to adjust the horizontal position, thereby adjusting according to the length of the hydraulic hose.

[0027] It should be noted that the present invention is a hydraulic hose torsion test device simulating bending fatigue. When performing a torsion test on a hydraulic hose, one end of the hydraulic hose can be first fixed to the first carrier plate 8 of the mounting seat 7 through a first clamp 9, and the other end can be fixed to the second carrier plate 10 of the center frame 27 through a second clamp 11. Subsequently, the controller 26 starts the motor 13, and the driving gear 14 at the output end of the motor 13 starts to rotate. Since the outer teeth of the driving gear 14 are distributed along the circumferential length of its outer contour for half of the circumference, when the driving gear 14 rotates, it engages with the second tooth groove 20 on one side of the transmission ring 3, driving the transmission ring 3 to move horizontally to one side on the first guide rail 15 at the bottom inner side of the center support platform 2. As a result, the first tooth grooves 19 on both sides of the transmission ring 3 respectively engage with the driven gears 5 on the outer sides of the rotating shaft 4 on both sides, and the transmission ring 3 is rotated. The driven gear 5 drives the rotating shaft 4 to rotate, and when the teeth on the outside of the driving gear 14 rotate to the second tooth groove 20 on the other side of the transmission ring 3, the transmission ring 3 will move in the opposite direction. Therefore, the first tooth grooves 19 on both sides of the transmission ring 3 are respectively engaged with the driven gears 5 on the outside of the rotating shaft 4 on both sides, so that the driven gear 5 drives the rotating shaft 4 to rotate in the opposite direction, thereby causing the swing arm 6 on the outside of the rotating shaft 4 to perform a fan-shaped reciprocating motion. Therefore, the fan-shaped reciprocating motion of the swing arm 6 drives the hose to perform a torsion test with a reciprocating angle change in the plane, simulating the "twist-reset-reverse twist" cycle process in real work, and the test conditions such as the torsion angle and frequency can be adjusted by replacing the transmission ring 3 and adjusting the rotation parameters of the motor 13, and by opening the second tooth grooves 20 and the first tooth grooves 19 of different lengths on the inside and outside.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic hose torsion test device simulating bending fatigue, characterized by: The invention comprises a base (1), wherein a central support platform (2) is fixedly mounted on the base (1), a workbench (12) is fixedly mounted on the central support platform (2), a controller (26) is fixedly mounted on the base (1) near the workbench (12), a transmission ring (3) is movably mounted on the inner bottom of the central support platform (2), a rotating shaft (4) is rotatably mounted on the inner bottom of the central support platform (2) located on both sides of the transmission ring (3), a driven gear (5) is fixedly mounted on the outer side of the rotating shaft (4), a swing arm (6) is fixedly mounted on the outer side of the rotating shaft (4), a mounting seat (7) is movably mounted in the swing arm (6), a first carrier plate (8) is fixedly mounted on the mounting seat (7), a first clamp (9) is fixedly mounted on one side of the first carrier plate (8), a central frame (27) is fixedly mounted on the central support platform (2), two second carrier plates (10) are fixedly mounted on the central frame (27), and second clamps (11) are fixedly mounted on opposite sides of the two second carrier plates (10).

2. A hydraulic hose torsion test device simulating bending fatigue according to claim 1, characterized in that: A motor (13) is fixedly mounted on the bottom of the base (1), and the motor (13) is electrically connected to the controller (26) via a cable. The output end of the motor (13) extends into the center support platform (2) and is fixedly mounted with a driving gear (14). The circumferential distribution length of the outer teeth of the driving gear (14) along the outer contour of the driving gear (14) is half of the circumference of the outer contour of the driving gear (14).

3. A hydraulic hose torsion test device simulating bending fatigue according to claim 2, characterized in that: Two first guide rails (15) are fixedly mounted on the inner bottom of the central support platform (2).

4. A hydraulic hose torsion test device simulating bending fatigue according to claim 3, characterized in that: The transmission ring (3) is provided with a first tooth groove (19) on both sides, and a second tooth groove (20) is provided on both sides inside the transmission ring (3). A plurality of second sliders (21) are fixedly mounted on the bottom of the transmission ring (3), and the second sliders (21) are slidably connected to one of the first guide rails (15), and one of the second tooth grooves (20) is meshed with the driving gear (14), and the first tooth groove (19) is meshed with one of the driven gears (5).

5. The hydraulic hose torsion test device for simulating bending fatigue according to claim 1, characterized in that: A plurality of brackets (16) are fixedly mounted on the workbench (12), and the plurality of brackets (16) are circumferentially arranged with the center point of the workbench (12) as the axis. A second guide rail (17) is fixedly mounted on the plurality of brackets (16), and a first slider (18) is slidably mounted on the second guide rail (17).

6. A hydraulic hose torsion test device simulating bending fatigue according to claim 5, characterized in that: An adjustment slot (22) is provided in the swing arm (6), and a plurality of limit slots (23) are provided at the bottom of the adjustment slot (22).

7. A hydraulic hose torsion test device simulating bending fatigue according to claim 6, characterized in that: The bottom of the mounting seat (7) is provided with a slot (24), an L-shaped inserting plate (25) is inserted into the slot (24), and the lower end of the L-shaped inserting plate (25) is also inserted into one of the limiting slots (23).

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