CN218600827U - Air spring durability test mechanism - Google Patents
Air spring durability test mechanism Download PDFInfo
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- CN218600827U CN218600827U CN202222383979.8U CN202222383979U CN218600827U CN 218600827 U CN218600827 U CN 218600827U CN 202222383979 U CN202222383979 U CN 202222383979U CN 218600827 U CN218600827 U CN 218600827U
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Abstract
The utility model discloses an air spring durability test mechanism, it includes the upper fixed block, middle mount and lower fixed block and swinging arms, the guide bar, the dwang, including a motor, an end cap, a controller, and a cover plate, middle mount is isosceles trapezoid structure and regards as top face and bottom face respectively with two inclined planes of mirror symmetry, the bottom face of upper fixed block is parallel with the top face of middle mount, the top face of lower fixed block is parallel with the bottom face of middle mount, and parallel both ends face central distance is unanimous with the design height of air spring, the swinging arms transversely passes middle mount along the center, the swinging arms is located the one end swing joint on the tip one side of middle mount on the fixture, the swinging arms other end is the free end, the guide bar embolias from the free end of swinging arms, the one end and the guide bar swing joint of dwang, the other end and the output shaft of motor; the air spring durability test device has the advantages that the air springs can be subjected to vertical and horizontal durability tests, and the energy consumption of the motor is low when the two air springs are tested simultaneously.
Description
Technical Field
The utility model relates to an automobile parts durability test technique especially relates to an air spring durability accredited testing organization.
Background
The spring uses the compressibility of the gas to achieve its spring action by charging a sealed container with compressed air. Air springs have been widely used in automotive engineering because of their ideal non-linear elastic properties. The air spring is used as an important automobile shock absorption and noise reduction element, a series of tests are required before the air spring leaves a factory to ensure the service performance of the air spring, the air spring leaves the factory after the air spring is qualified, and all the test processes comprise a durability test on the air spring.
The durability of an air spring is an important prerequisite for its proper operation. At present, there are many air spring durability testing devices or fatigue testing devices of different structures. As the utility model patent "an air spring fatigue test device" that china announced (patent number: 201822083779.4), it includes: bottom plate and set up drive arrangement, pivot, testboard and drive mechanism on the bottom plate, wherein: the test bench comprises an upper layer for loading the air spring and a lower layer for loading the transmission mechanism; the upper layer comprises an upper top plate, a lower bottom plate and a stand column arranged between the upper top plate and the lower bottom plate; the lower layer is provided with a support frame body, and the rotating shaft is erected on the support frame body; an upper cover plate and a lower cover plate are respectively arranged on the upper top plate and the lower bottom plate, and an air spring is loaded between the upper cover plate and the lower cover plate; the upper cover plate is fixedly connected with the top plate, and the lower cover plate is fixedly connected with the transmission mechanism; the transmission mechanism comprises an upper connecting rod, a lower connecting rod and a rotary table, the lower end of the lower connecting rod is eccentrically hinged with the rotary table, and the upper end of the lower connecting rod is connected with the lower end of the upper connecting rod through a pin shaft; the upper end of the upper connecting rod penetrates through the lower bottom plate and is fixedly connected with the lower cover plate; the center of the turntable is connected with a rotating shaft, a chain wheel is arranged on the rotating shaft, and the driving device is connected with the chain wheel through a chain; the two test tables and the two transmission mechanisms are respectively arranged on two sides of the rotating shaft and driven by the rotating shaft to perform synchronous test; the driving device is selected to be a three-phase asynchronous motor. When the testing device works, the three-phase asynchronous motor starts the driving rotating shaft to drive the lower connecting rod to vibrate up and down through the turntable, so that the upper connecting rod drives the lower cover plate to vibrate, and the fatigue resistance test of the air spring is carried out. However, such a test apparatus has the following problems: 1) In fact, the motion trail of the air spring is a space curve, namely the motion trail can be decomposed into vertical motion (axial compression and stretching) and transverse motion (left-right deviation), but the testing device can only test the vertical durability of the air spring, and the durability test in the transverse direction is lacked, so that the durability test result and the actual service life are larger; 2) The durability test of the air spring usually requires more than 300 million cycles, and the test device can simultaneously test the durability of two air springs, so that the test time is reduced, the test efficiency is improved, but the working load of the three-phase asynchronous motor is increased, and the problem of higher energy consumption is caused.
Disclosure of Invention
The utility model aims to solve the technical problem that an air spring durability test mechanism is provided, its durability test that can carry out vertical motion and lateral motion to the air spring, and can reduce the energy consumption of motor under the condition of carrying out the durability test simultaneously to two air springs.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides an air spring durability accredited testing organization, includes the motor, its characterized in that: the air spring fixing device comprises an upper fixing block, a middle fixing frame, a lower fixing block, a swinging rod, a guide rod and a rotating rod, wherein the upper fixing block, the middle fixing frame and the lower fixing block are sequentially distributed on the same vertical line from top to bottom, the top end of the upper fixing block is fixed, the bottom end of the lower fixing block is fixed, the middle fixing frame is of an isosceles trapezoid structure, two inclined planes which are in mirror symmetry are respectively used as a top end face and a bottom end face, the bottom end face of the upper fixing block is an inclined plane which is parallel to the top end face of the middle fixing frame, the distance between the centers of the two end faces is consistent with the design height of an air spring, the top end face of the lower fixing block is an inclined plane which is parallel to the bottom end face of the middle fixing frame, the distance between the centers of the two end faces is consistent with the design height of the air spring, the swinging rod transversely penetrates through the middle fixing frame along a symmetrical line which is in mirror symmetry with the top end face and the bottom end face of the middle fixing frame, one end of the swinging rod which is positioned on one side of the small end of the middle fixing frame is used as a free end and movably connected to a fixed end of the swinging rod, the hollow swinging rod is used as a free end of the fixing frame, the guiding rod, and the swinging rod are sleeved on the other end of the swinging rod, and the movable shaft of the swinging rod are connected to the fixed end of the motor, and the swinging rod are connected with the fixed end of the motor.
The fixed end of the swinging rod is connected to a fixed object through a ball joint, and one end of the rotating rod is hinged to the guide rod.
The bottom end face of the upper fixed block, the top end face and the bottom end face of the middle fixed frame, the inclination angle of the top end face of the lower fixed block relative to the horizontal plane, and the swing angle of the swing rod swinging vertically upwards or downwards from the horizontal position are all consistent with the deflection angle simulated by the air spring.
The middle fixing frame mainly comprises two sub fixing frames with the same structure, one end face of each sub fixing frame is a plane, the other end face of each sub fixing frame is an inclined plane, grooves are formed in the planes of the sub fixing frames, the two sub fixing frames are spliced in a mirror symmetry mode, the planes of the two sub fixing frames are attached to each other, and the two grooves are opposite to each other to form a penetrating groove for the swinging rod to penetrate through. The sub-fixing frame with the framework structure is built during assembly, and is more beneficial to fixing the air spring.
The dwang be the L type, the vertical section of dwang be platelike structure, the vertical section of dwang the free end with the side of guide bar articulated, the horizontal segment of dwang be cylindric structure, the horizontal segment of dwang the free end with the output shaft of motor be connected. In the testing mechanism, the swinging amplitude of the swinging rod can be increased by lengthening the length of the vertical section of the rotating rod, but the simulated deflection angle of different air springs is fixed, so that the swinging angle of the swinging rod in the testing mechanism can be determined, the swinging amplitude of the swinging rod can be determined, and the length of the vertical section of the rotating rod can be calculated, namely, for the air springs with different deflection angles, the testing can be realized by adjusting the length of the vertical section of the rotating rod, namely, the testing requirements of different swinging amplitudes can be met by changing the length of the vertical section of the rotating rod; the vertical section of dwang is designed into platelike structure, designs the horizontal segment of dwang for cylindric structure, all is for being connected with other parts for convenience.
The air spring fixing device is characterized in that an air spring is respectively fixed between the bottom end face of the upper fixing block and the top end face of the middle fixing frame and between the top end face of the lower fixing block and the bottom end face of the middle fixing frame, an upper cover plate of the air spring above the upper fixing block is fixedly connected with the bottom end face of the upper fixing block, a piston piece of the air spring above the upper fixing block is fixedly connected with the top end face of the middle fixing frame, an upper cover plate of the air spring below the upper fixing block is fixedly connected with the top end face of the lower fixing block, a piston piece of the air spring below the upper fixing block is fixedly connected with the bottom end face of the middle fixing frame, and the upper cover plate of any air spring is coaxial with the piston piece in a static state. When the test is carried out, the piston parts of the two air springs are fixed with the middle fixing frame, or the upper cover plates of the two air springs are fixed with the middle fixing frame, but when the test is carried out, the upper cover plates of the air springs are coaxial with the piston parts, so that the durability of the air springs can be accurately tested.
Compared with the prior art, the utility model has the advantages of:
1) The bottom end face of the upper fixing block, the top end face and the bottom end face of the middle fixing frame and the top end face of the lower fixing block are designed to be inclined planes, an air spring is fixed between the bottom end face of the upper fixing block and the top end face of the middle fixing frame, another air spring is fixed between the bottom end face of the middle fixing frame and the top end face of the lower fixing block, the rotating rod is driven by a motor to rotate for 360 degrees, the guide rod moves linearly back and forth on the oscillating rod, the oscillating rod swings up and down under the action of force, namely the rotation of the rotating rod is converted into the up-down swing of the oscillating rod, the vertical and transverse durability tests of the air springs are realized, and therefore the durability test result is closer to the actual service life.
2) Although the two air springs are tested simultaneously by utilizing the motor, the two air springs are symmetrically arranged, so that the stress characteristic that the air springs are always in a compression state in the use process is fully utilized, the acting forces of the two air springs are mutually offset, the working load of the motor is reduced, and the energy consumption is reduced.
3) The middle fixing frame can be replaced by a fixing block, namely, the durability test of the air spring cannot be influenced by the weight of the middle fixing frame, but the middle fixing frame can be designed into a simpler structure on the premise of ensuring that the middle fixing frame is not deformed in consideration of material cost and fixing convenience of the air spring.
4) The distance between the center of the bottom end face of the upper fixing block and the center of the top end face of the middle fixing frame and the distance between the center of the top end face of the lower fixing block and the center of the bottom end face of the middle fixing frame are consistent with the design height of the air spring, so that the durability test of the air springs with different heights can be realized by changing the fixing positions of the upper fixing block or the lower fixing block, and the applicability is wide.
Drawings
Fig. 1 is a first schematic structural diagram of an air spring durability testing mechanism according to the present invention;
fig. 2 is a schematic structural diagram of an air spring durability testing mechanism according to the present invention;
FIG. 3 is a schematic view of a portion of the air spring durability testing mechanism of the present invention;
fig. 4 is a schematic diagram of a simple structure of the air spring tested by the air spring durability testing mechanism of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 4, the air spring 9 generally mainly comprises an upper cover plate 91, a rubber bag skin 93, and a piston member 92 (or a lower cover plate), wherein the upper cover plate 91 and the piston member 92 (or the lower cover plate) play a role of fixed support, and the rubber bag skin 93 is responsible for bearing the force of compressed air.
The utility model provides an air spring durability testing mechanism, as shown in the figure, which comprises an upper fixing block 1, a middle fixing frame 2 and a lower fixing block 3 which are sequentially distributed on the same vertical line from top to bottom, and a swing rod 4, a guide rod 5, a rotating rod 6 and a motor (not shown in the figure), wherein the top end of the upper fixed block 1 is fixed, the top end of the upper fixed block 1 can be horizontally fixed on a fixed object, the bottom end of the lower fixed block 3 is fixed, the bottom end of the lower fixed block 3 can be horizontally fixed on another fixed object, the middle fixed frame 2 is suspended between the upper fixed block 1 and the lower fixed block 3, the middle fixed frame 2 is in an isosceles trapezoid structure, two inclined planes which are in mirror symmetry are respectively used as a top end plane 21 and a bottom end plane 22, the bottom end plane 11 of the upper fixed block 1 is an inclined plane which is parallel to the top end plane 21 of the middle fixed frame 2, the distance between the centers of the two end planes is consistent with the design height of the air spring 9, the swing rod 4 transversely penetrates through the middle fixed frame 2 along a symmetrical line which is in mirror symmetry with the top end plane 21 and the bottom end plane 22 of the middle fixed frame 2, one end plane 31 of the swing rod 4 on one side of the small end of the middle fixed frame 2 is used as a fixed end 41 and is connected to the swing rod 4 through a movable ball head (not shown in the figure), the fixed frame 4, the other end of the swing rod 4 is connected to the fixed frame 5, the free end of the swing rod 5, and the fixed frame 5, and the free end of the fixed frame 5, and the guide rod 5 are connected to the fixed frame 5, and the free end of the fixed frame 5.
The further optimized scheme is as follows: the inclination angles of the bottom end surface 11 of the upper fixing block 1, the top end surface 21 and the bottom end surface 22 of the middle fixing block 2, and the top end surface 31 of the lower fixing block 3 relative to the horizontal plane, and the swing angle of the swing rod 4 swinging vertically upwards or downwards from the horizontal position are consistent with the simulated deflection angle of the air spring 9.
One specific scheme is as follows: the middle fixing frame 2 mainly comprises two sub-fixing frames 23 with the same structure, one end face of each sub-fixing frame 23 is a plane, the other opposite end face of each sub-fixing frame 23 is an inclined plane, a groove 24 is formed in the plane of each sub-fixing frame 23, the two sub-fixing frames 23 are spliced in a mirror symmetry mode, so that the planes of the two sub-fixing frames 23 are attached to each other, and the two grooves 24 are opposite to each other to form a through groove 25 for the swing rod 4 to penetrate through. The sub-fixing frame 23 of the frame structure is constructed during assembly, and is more beneficial to fixing the air spring 9.
Another specific scheme is as follows: the dwang 6 is the L type, and the vertical section 61 of dwang 6 is platelike structure, and the free end of the vertical section 61 of dwang 6 is articulated with the side of guide bar 5, and the horizontal segment 62 of dwang 6 is cylindric structure, the free end of the horizontal segment 62 of dwang 6 and the output shaft of motor. In the test mechanism, the swing amplitude of the swing rod 4 is increased by lengthening the length of the vertical section 61 of the rotating rod 6, but the simulated deflection angle of different air springs 9 is fixed, so that the swing angle of the swing rod 4 in the test mechanism can be determined, the swing amplitude of the swing rod 4 can be determined, and the length of the vertical section 61 of the rotating rod 6 can be calculated, namely, for the air springs 9 with different deflection angles, the test can be realized by adjusting the length of the vertical section 61 of the rotating rod 6, namely, the test requirements of different swing amplitudes can be met by changing the length of the vertical section 61 of the rotating rod 6; the vertical section 61 of the rotating rod 6 is designed to be a plate-shaped structure, and the horizontal section 62 of the rotating rod 6 is designed to be a cylindrical structure, so that the vertical section and the horizontal section are conveniently connected with other parts.
Specifically, air springs 9 are respectively fixed between the bottom end face 11 of the upper fixed block 1 and the top end face 21 of the middle fixed frame 2 and between the top end face 31 of the lower fixed block 3 and the bottom end face 22 of the middle fixed frame 2, an upper cover plate 91 of the upper air spring 9 is fixedly connected with the bottom end face 11 of the upper fixed block 1, a piston element 92 of the upper air spring 9 is fixedly connected with the top end face 21 of the middle fixed frame 2, an upper cover plate 91 of the lower air spring 9 is fixedly connected with the top end face 31 of the lower fixed block 3, a piston element 92 of the lower air spring 9 is fixedly connected with the bottom end face 22 of the middle fixed frame 2, and the upper cover plate 91 and the piston element 92 of any air spring 9 are coaxial in a static state. During testing, the piston pieces 92 of the two air springs 9 are fixed with the middle fixing frame 2, or the upper cover plates 91 of the two air springs 9 are fixed with the middle fixing frame 2, but when the upper cover plates 91 of the air springs 9 are fixed, the upper cover plates 91 of the air springs 9 are coaxial with the piston pieces 92, so that the durability of the air springs 9 can be accurately tested.
The process of using the testing mechanism to test the durability of two identical air springs comprises the following steps: starting the motor; an output shaft of the motor rotates to drive the rotating rod 6 to rotate, and the vertical section 61 of the rotating rod 6 rotates 360 degrees in the plane where the vertical section is located; because the guide rod 5 is sleeved on the swing rod 4 and limited by the swing rod 4, when the rotating rod 6 rotates, the guide rod 5 moves back and forth on the swing rod 4, and the swing rod 4 swings up and down; the swing rod 4 swings up and down to enable the middle fixing frame 2 to extrude or stretch the air spring 9, and durability tests of vertical movement (axial compression and stretching) and transverse movement (left and right deviation) are achieved.
Claims (6)
1. The utility model provides an air spring durability accredited testing organization, includes the motor, its characterized in that: the air spring is characterized by further comprising an upper fixing block, a middle fixing frame, a lower fixing block, a swinging rod, a guide rod and a rotating rod which are sequentially distributed on the same vertical line from top to bottom, wherein the top end of the upper fixing block is fixed, the bottom end of the lower fixing block is fixed, the middle fixing frame is of an isosceles trapezoid structure, two inclined planes in mirror symmetry are respectively used as a top end face and a bottom end face, the bottom end face of the upper fixing block is an inclined plane which is parallel to the top end face of the middle fixing frame, the distance between the centers of the two end faces is consistent with the design height of the air spring, the top end face of the lower fixing block is an inclined plane which is parallel to the bottom end face of the middle fixing frame, the distance between the centers of the two end faces is consistent with the design height of the air spring, the swinging rod transversely penetrates through the middle fixing frame along a symmetry line in mirror symmetry of the top end face and the bottom end face of the middle fixing frame, one end, which is located on one side of the small end of the middle fixing frame, of the swinging rod is used as a free end and movably connected to the fixed end of the hollow fixing frame, the swinging rod, the other end of the swinging rod is connected to the output shaft of the motor, and the guide rod sleeved in the swinging rod, and the swinging rod are connected to the other end of the motor.
2. The air spring durability testing mechanism according to claim 1, characterized in that: the fixed end of the swinging rod is connected to a fixed object through a ball joint, and one end of the rotating rod is hinged to the guide rod.
3. An air spring durability testing mechanism according to claim 1 or 2, characterized in that: the bottom end face of the upper fixed block, the top end face and the bottom end face of the middle fixed frame, the inclination angle of the top end face of the lower fixed block relative to the horizontal plane, and the swing angle of the swing rod swinging vertically upwards or downwards from the horizontal position are all consistent with the deflection angle simulated by the air spring.
4. An air spring durability testing mechanism according to claim 3, characterized in that: the middle fixing frame mainly comprises two sub fixing frames with the same structure, one end face of each sub fixing frame is a plane, the other end face of each sub fixing frame is an inclined plane, grooves are formed in the planes of the sub fixing frames, the two sub fixing frames are spliced in a mirror symmetry mode, the planes of the two sub fixing frames are attached to each other, and the two grooves are opposite to each other to form a penetrating groove for the swinging rod to penetrate through.
5. An air spring durability testing mechanism according to claim 3, characterized in that: the dwang be the L type, the vertical section of dwang be platelike structure, the vertical section of dwang the free end with the side of guide bar articulated, the horizontal segment of dwang be cylindric structure, the horizontal segment of dwang the free end with the output shaft of motor be connected.
6. The air spring durability testing mechanism according to claim 1, wherein: an air spring is respectively fixed between the bottom end face of the upper fixed block and the top end face of the middle fixed frame and between the top end face of the lower fixed block and the bottom end face of the middle fixed frame, an upper cover plate of the air spring positioned above is fixedly connected with the bottom end face of the upper fixed block, a piston piece of the air spring positioned above is fixedly connected with the top end face of the middle fixed frame, an upper cover plate of the air spring positioned below is fixedly connected with the top end face of the lower fixed block, a piston piece of the air spring positioned below is fixedly connected with the bottom end face of the middle fixed frame, and the upper cover plate of any air spring is coaxial with the piston piece in a static state.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222383979.8U CN218600827U (en) | 2022-09-07 | 2022-09-07 | Air spring durability test mechanism |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222383979.8U CN218600827U (en) | 2022-09-07 | 2022-09-07 | Air spring durability test mechanism |
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| CN218600827U true CN218600827U (en) | 2023-03-10 |
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| CN202222383979.8U Active CN218600827U (en) | 2022-09-07 | 2022-09-07 | Air spring durability test mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117109829A (en) * | 2023-08-31 | 2023-11-24 | 扬州东升汽车零部件股份有限公司 | Truck cab suspension air spring shock absorber testing device |
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2022
- 2022-09-07 CN CN202222383979.8U patent/CN218600827U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117109829A (en) * | 2023-08-31 | 2023-11-24 | 扬州东升汽车零部件股份有限公司 | Truck cab suspension air spring shock absorber testing device |
| CN117109829B (en) * | 2023-08-31 | 2024-01-30 | 扬州东升汽车零部件股份有限公司 | Truck cab suspension air spring shock absorber testing device |
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