CN118392526B - Shock absorber fatigue resistance test board - Google Patents
Shock absorber fatigue resistance test board Download PDFInfo
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- CN118392526B CN118392526B CN202410833317.7A CN202410833317A CN118392526B CN 118392526 B CN118392526 B CN 118392526B CN 202410833317 A CN202410833317 A CN 202410833317A CN 118392526 B CN118392526 B CN 118392526B
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- connecting piece
- shock absorber
- pedestal
- lifting beam
- shock
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/04—Suspension or damping
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a fatigue resistance test board for a shock absorber, which belongs to the technical field of shock absorber testing and comprises a frame, wherein the frame comprises a pedestal and a beam frame, the beam frame is fixed on the pedestal, a testing area exists between the pedestal and the beam frame, a lower connecting piece is arranged on the pedestal, an upper connecting piece is arranged on the beam frame, a shock excitation component is arranged in the pedestal, a weighting component is arranged on the beam frame, the lower connecting piece can slide along the axis of the lower connecting piece, a first end of the lower connecting piece is connected with a first end of the shock absorber, and a second end of the lower connecting piece extends into the pedestal and is in transmission connection with the shock excitation component.
Description
Technical Field
The invention relates to a fatigue resistance test board for a shock absorber, and belongs to the technical field of shock absorber testing.
Background
The traditional shock absorber fatigue resistance test board has obvious defects when simulating the buffer state of the shock absorber of the electric tricycle under the real working condition. The test tables often cannot accurately reproduce the complex road conditions, different loads and other working conditions encountered by the vehicle in actual use, so that the test results have obvious deviation from the performance of the shock absorber in the real environment;
Shock absorbers experience a variety of complex operating conditions in actual use. Firstly, because the electric tricycle often runs on various roads such as urban roads, rural roads, mountain slopes and the like, the shock absorber needs to adapt to the impact and vibration brought by different roads. However, the existing test bench can only simulate single road surface condition, and cannot accurately simulate the comprehensive influence of multiple road surfaces.
Therefore, a fatigue resistance test board for the shock absorber is provided.
Disclosure of Invention
The invention aims to provide a fatigue resistance test board for a shock absorber, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present invention adopts the following technical scheme: a shock absorber fatigue resistance test stand comprising:
The frame comprises a pedestal and a beam frame, wherein the beam frame is U-shaped, the opening end of the beam frame is fixed on the pedestal, a testing area is arranged between the pedestal and the beam frame, and the front part and the rear part of the testing area are open due to the U-shaped beam frame, so that the shock absorber can be conveniently installed;
the lower connecting piece is arranged on the pedestal and is used for connecting the first end of the shock absorber;
The upper connecting piece is arranged on the beam frame and is used for connecting the second end of the shock absorber;
the shock assembly is arranged in the pedestal and is used for applying a shock force to the lower connecting piece so as to simulate the shock condition of the shock absorber in practice;
The weight increasing component is arranged on the beam frame and is used for applying weight to the upper connecting piece so as to simulate the load condition born by the shock absorber in practice;
Wherein, lower connecting piece is the shaft-like structure, and lower connecting piece can slide along self axis, and lower connecting piece's first end is connected with the first end of bumper shock absorber, and lower connecting piece's second end extends to in the pedestal and is connected with shock-absorbing assembly transmission.
Preferably, the shock assembly comprises:
The lifting beam is connected in a sliding manner in the pedestal, and the second end of the lower connecting piece is fixed on the side wall of the lifting beam, so that the lower connecting piece is linked with the lifting beam;
The stress frame is fixed in the pedestal and is positioned right below the lifting beam, when the lifting beam moves downwards, the lifting beam impacts on the stress frame to generate a vibration force;
the driving wheel is rotationally connected to the stress frame, the outer contour of the driving wheel is provided with a circle of vortex-shaped spiral surface, two ends of the spiral surface are connected by a plane, the plane is perpendicular to the tangential plane of the rotating shaft of the driving wheel, the stress frame is fixedly provided with a first motor, the output end of the first motor is in meshed connection with the rotating shaft of the driving wheel, and the output shaft of the first motor drives the driving wheel to rotate under the driving of the first motor;
the cross rod is connected to the lifting beam, the cross rod is arranged above the driving wheel and parallel to the rotating shaft of the driving wheel, and when the driving wheel rotates, the cross rod can slide along the spiral surface of the driving wheel, so that the cross rod can upwards lift the lifting beam.
Preferably, the shock assembly is provided with an adjusting assembly for adjusting the shock amplitude of the shock absorber, and the adjusting assembly comprises:
The two fixing sleeves are symmetrically fixed on the lifting beam, and the upper ends of the fixing sleeves penetrate through the pedestal and extend to the outside;
The screw rods are arranged in each fixing sleeve, and the upper ends of the screw rods extend out of the fixing sleeves and are provided with driving heads;
the number of the connecting blocks is two, the two connecting blocks are respectively fixed at the two ends of the cross rod, and the threaded ends of the two screw rods are respectively connected to the corresponding connecting blocks in a rotating mode.
Preferably, the cross bar is rotatably connected with a roller, and the roller is in rolling connection with the spiral surface.
Preferably, a rubber pad is fixed on the side wall of the lifting Liang Zhengdui stress frame, when the lifting beam is impacted on the stress frame, the lower surface of the rubber pad is contacted with the lifting frame, and at the moment, the rubber pad simulates the buffer of a wheel tire, so that the fatigue resistance test of the shock absorber is more similar to a real state.
Preferably, the weighting assembly comprises:
the box, box sliding connection is on the roof beam frame, and the inside of box is offered and is used for placing the chamber of placing of different weight configuration pieces, goes up the connecting piece and connects in the below of box.
Preferably, the inside of box transversely rotates and is connected with the lead screw, and the one end of lead screw runs through the box and is connected with the turning handle, goes up the connecting piece meshing and connects on the lead screw, and when rotating the lead screw, the lead screw can drive the position of adjusting the connecting piece relative to the box for adjust the gradient of installing the bumper shock absorber between lower connecting piece, last connecting piece.
Preferably, the top of the beam frame is rotationally connected with a winding wheel through a second motor, a pull rope is wound in the winding wheel, the top of the box body is fixed with a lifting ring, and the end part of the pull rope is connected to the lifting ring.
Compared with the prior art:
According to the invention, the shock absorber to be tested is connected to the lower connecting piece and the upper connecting piece, the weight on the weight increasing component directly acts on the upper connecting piece, so that the weight increasing component is directly applied to the second end of the shock absorber, the shock exciting component is operated to simulate a shock signal, and the shock signal acts on the lower connecting piece, so that the fatigue resistance test of the shock absorber under a load state is realized.
According to the invention, the weight increasing component is used for applying weight to the upper connecting piece, and the weight increasing component can simulate different loading conditions born by the shock absorber in practical application, so that the performance of the shock absorber under different loads is evaluated. Through adjusting the weight of the weight increasing component, the performance test of the shock absorber under different loads can be realized.
According to the invention, the screw rod is rotated to drive the upper connecting piece to change the position of the upper connecting piece on the box body, and the second end of the shock absorber is connected with the upper connecting piece, so that the change of the position can directly lead to the change of the inclination of the shock absorber, and the accurate control of the inclination of the shock absorber can be realized by adjusting the screw rod, so that the performance of the shock absorber under different inclination angles is simulated.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the second embodiment of the present invention.
Fig. 3 is a schematic view of the structure of the pedestal, the lower connecting piece and the lifting beam.
Fig. 4 is a cross-sectional view of the present invention at the pedestal, lower link, lifting beam, drive wheel and cross bar.
Fig. 5 is a second cross-sectional view of the pedestal, lower link, lifting beam, drive wheel and cross bar of the present invention.
Fig. 6 is a cross-sectional view of the invention at the upper connector, the housing and the lead screw.
Fig. 7 is a cross-sectional view of the invention at the lower connector, upper connector, housing and lead screw.
In the figure: 1. the device comprises a frame, 101, a pedestal, 102, a beam frame, 2, a lower connecting piece, 3, an upper connecting piece, 4, a shock excitation component, 401, a lifting beam, 402, a stress frame, 403, a driving wheel, 404, a cross rod, 405, a first motor, 406, rollers, 5, a weight increasing component, 501, a box body, 6, an adjusting component, 601, a fixed sleeve, 602, a screw rod, 603, a connecting block, 604, a locking bolt, 7, a rubber pad, 8, a screw rod, 9, a second motor, 10, a winding wheel, 11, a pull rope, 12 and a hanging ring.
Detailed Description
The invention is illustrated below by means of specific examples, without however limiting the invention.
Example 1
As shown in fig. 1 to 7, in this embodiment, a fatigue-resistant test stand for a shock absorber is provided, including a frame 1, where the frame 1 includes a base 101 and a beam 102, the beam 102 is in a U shape, an opening end of the beam 102 is fixed on the base 101, a test area exists between the base 101 and the beam 102, and the front and the rear of the test area are open due to the U shape of the beam 102, so that the shock absorber is convenient to install; the base 101 is provided with a lower connector 2 for connecting to a first end of the shock absorber; the beam frame 102 is provided with an upper connecting piece 3 and is used for connecting a second end of the shock absorber; the stand 101 is internally provided with a vibration exciting assembly 4 and is used for applying vibration force to the lower connecting piece 2 so as to simulate the vibration condition of the shock absorber in practice; the beam frame 102 is provided with a weight increasing component 5 and is used for applying weight to the upper connecting piece 3 so as to simulate the load condition born by the shock absorber in practice; wherein, the lower connecting piece 2 is in a rod-shaped structure, the lower connecting piece 2 can slide along the axis of the lower connecting piece 2, the first end of the lower connecting piece 2 is connected with the first end of the shock absorber, and the second end of the lower connecting piece 2 extends into the pedestal 101 and is in transmission connection with the shock excitation component 4;
The using process comprises the following steps:
As shown in fig. 2, the shock absorber to be tested is connected to the lower connector 2 and the upper connector 3, at this time, the weight on the weighting member 5 directly acts on the upper connector 3, so as to be directly applied to the second end of the shock absorber, the shock absorbing member 4 is operated, the shock absorbing member 4 simulates a shock signal, and the shock signal acts on the lower connector 2, so that the fatigue resistance test of the shock absorber under a load state is realized.
Example two
As shown in fig. 4 to 5, in order to simulate the vibration conditions to which the shock absorber is subjected in practice, in this embodiment, the shock assembly 4 includes a lifting beam 401, the lifting beam 401 is slidably connected to the inside of the stand 101, and the second end of the lower connecting member 2 is fixed to the side wall of the lifting beam 401, so that the lower connecting member 2 is interlocked with the lifting beam 401; the lifting beam 401 is connected to the inside of the pedestal 101 in a sliding manner to realize the reciprocating motion in the vertical direction, when the lifting beam 401 moves upwards, the lifting beam 401 drives the lower connecting piece 2 to move upwards, so that the lower connecting piece 2 lifts the shock absorber upwards, otherwise, when the lifting beam 401 moves downwards, the lifting beam 401 drives the upper connecting piece 3 to move downwards, so as to realize the downward movement of the shock absorber; the stress frame 402 is fixed in the pedestal 101 and is positioned under the lifting beam 401, when the lifting beam 401 moves downwards, the lifting beam 401 impacts on the stress frame 402 to generate a vibration force, when the lifting beam 401 moves downwards and impacts on the stress frame 402, an instant impact force is generated, and then a vibration force is formed, so that the second end of the stable and reliable lower connecting piece 2 of the vibration force source is fixed on the side wall of the lifting beam 401, and the lower connecting piece 2 can synchronously move when the lifting beam 401 moves, and therefore the vibration force is effectively transmitted to a connected shock absorber; the stress frame 402 is rotationally connected with a driving wheel 403, the outer contour of the driving wheel 403 is provided with a circle of vortex-shaped spiral surface, two ends of the spiral surface are connected by a plane, the plane is perpendicular to a tangential plane of a rotating shaft of the driving wheel 403, as shown in fig. 4-5, a first motor 405 is fixed on the stress frame 402, an output end of the first motor 405 is meshed with the rotating shaft of the driving wheel 403, and under the driving of the first motor 405, an output shaft of the first motor 405 drives the driving wheel 403 to rotate, and the rotating direction is shown in the arrow direction shown in fig. 4-5; the lifting beam 401 is connected with a cross rod 404, the cross rod 404 is arranged above the driving wheel 403 and is parallel to the rotating shaft of the driving wheel 403, and when the driving wheel 403 rotates, the cross rod 404 can slide along the spiral surface of the driving wheel 403, so that the cross rod 404 lifts the lifting beam 401 upwards;
As shown in fig. 5, the weight of the weighting assembly 5 is left and right, so that the upper connecting piece 3 presses the shock absorber to move downwards, and the shock absorber presses the lower connecting piece 2, the lifting beam 401 and the cross rod 404 to move downwards, so that the lifting beam 401 abuts against the stress frame 402, the cross rod 404 relatively slides along the spiral surface of the driving wheel 403 after driving the driving wheel 403 to rotate along the arrow direction, and the spiral surface moves upwards against the cross rod 404 in the sliding process, so that the lifting beam 401, the lower connecting piece 2, the shock absorber, the upper connecting piece 3 and the weighting assembly 5 synchronously move upwards, as shown in the state of fig. 4, when the driving wheel 403 continues to rotate along the arrow direction, the spiral surface instantaneously eliminates the support to the cross rod 404 after the cross rod 404 passes over the plane position, and under the action of the downward pressing of the weighting assembly 5, the lifting beam 401, the lower connecting piece 2, the shock absorber, the upper connecting piece 3 and the weighting assembly 5 synchronously move downwards, so that the lifting beam 401 is caused to impact on the stress frame 402, the vibration simulation of the shock absorber is realized, and powerful support is provided for the fatigue resistance test of the shock absorber.
As shown in fig. 4 to 5, in order to be able to adjust the elevation height of the elevation beam 401, thereby adjusting the vibration amplitude of the shock absorber, the shock absorbing member 4 is provided with an adjusting member 6 for adjusting the vibration amplitude of the shock absorber, the adjusting member 6 includes two fixing sleeves 601, the two fixing sleeves 601 are symmetrically fixed on the elevation beam 401, and the upper ends of the fixing sleeves 601 penetrate through the pedestal 101 and extend to the outside; a screw rod 602 is arranged in each fixing sleeve 601, and the upper end of the screw rod 602 extends out of the fixing sleeve 601 and is provided with a driving head; connecting blocks 603 are fixedly connected to two ends of the cross rod 404 respectively, and threaded ends of the two screw rods 602 are connected to the corresponding connecting blocks 603 in a rotating mode respectively;
When the screw rod 602 is rotated, the screw rod 602 moves along the axis of the fixed sleeve 601, at this time, the threaded end of the screw rod 602 drives the cross rod 404 to move on the lifting beam 401 to adjust the distance between the cross rod 404 and the lifting beam 401, and when the distance between the cross rod 404 and the lifting beam 401 is reduced, the amplitude of synchronous upward movement of the lifting beam 401, the lower connecting piece 2, the shock absorber, the upper connecting piece 3 and the weight increasing component 5 is reduced, and the vibration amplitude is reduced;
when the interval between the cross bar 404 and the lifting beam 401 is increased, the amplitude of the synchronous upward movement of the lifting beam 401, the lower connecting piece 2, the shock absorber, the upper connecting piece 3 and the weight increasing component 5 is increased, and the vibration amplitude is increased;
in addition, in order to fix the screw rod 602 relatively inside the fixing sleeve 601, a locking bolt 604 is engaged with one side of the upper end of the fixing sleeve 601, the locking bolt 604 is perpendicular to the screw rod 602, when the threaded end of the locking bolt 604 is pressed against the screw rod 602, the screw rod 602 and the fixing sleeve 601 can be relatively fixed, otherwise, after the locking bolt 604 is loosened, the screw rod 602 can relatively rotate on the fixing sleeve 601.
As shown in fig. 4-5, in order to reduce friction between the driving wheel 403 and the cross bar 404, a roller 406 is rotatably connected to the cross bar 404, and the roller 406 is in rolling connection with the spiral surface;
The roller 406 is rotatably connected to the cross bar 404 and is in rolling connection with the spiral surface of the driving wheel 403, so that when the cross bar 404 moves up and down along with the rotation of the driving wheel 403, the roller 406 directly contacts with the spiral surface instead of the cross bar 404, thereby greatly reducing sliding friction between the two, improving the efficiency and the service life of the shock assembly 4.
As shown in fig. 4 to 5, in order to make the fatigue resistance test of the shock absorber more approximate to the real state, the rubber pad 7 is fixed on the side wall of the lifting beam 401 opposite to the stress frame 402, and when the lifting beam 401 impacts on the stress frame 402, the lower surface of the rubber pad 7 contacts with the lifting beam 401, and at this time, the rubber pad 7 simulates the buffer of the wheel tire, so that the fatigue resistance test of the shock absorber is more approximate to the real state.
Example III
As shown in fig. 1-2 and fig. 6-7, in order to realize the weight balancing of the shock absorber in the first embodiment, the weight increasing component 5 includes a box 501, the box 501 is slidably connected to the beam 102, a placing cavity for placing blocks with different weights is formed in the box 501, and the upper connecting piece 3 is connected below the box 501;
the weighting assembly 5 is used for applying weight to the upper connecting piece 3, and the weighting assembly 5 can simulate different loading conditions of the shock absorber in practical application, so as to evaluate the performance of the shock absorber under different loads. By adjusting the weight of the weighting assembly 5, performance tests of the shock absorber under different loads can be realized;
The lower and upper connection members 2 and 3 have appropriate rigidity and strength, so that the stability of the connection of the shock absorber can be ensured, and the lower connection member 2 can accurately transmit the shock force generated by the shock assembly 4 to the shock absorber.
As shown in fig. 6 and 7, in order to simulate performance of the shock absorber at different inclination angles, a screw rod 8 is connected to the inside of the box 501 in a transverse rotation manner, one end of the screw rod 8 penetrates through the box 501 and is connected with a rotating handle, the upper connecting piece 3 is connected to the screw rod 8 in a meshed manner, and when the screw rod 8 is rotated, the screw rod 8 can drive the upper connecting piece 3 to adjust the position relative to the box 501 so as to adjust the inclination of the shock absorber installed between the lower connecting piece 2 and the upper connecting piece 3;
When the screw 8 is turned, the screw 8 drives the upper link 3 to change its position on the housing 501. Since the upper connector 3 is connected to the second end of the shock absorber, this change in position directly results in a change in the inclination of the shock absorber. By adjusting the screw rod 8, accurate control of the inclination of the shock absorber can be achieved, so that performance of the shock absorber under different inclination angles is simulated.
As shown in fig. 1 and 2, in order to facilitate the installation of the damper on the lower and upper connection members 2 and 3, a winding wheel 10 driven to rotate by a second motor 9 is installed at the top of the beam 102, a pull rope 11 is wound inside the winding wheel 10, one end of the pull rope 11 is connected to a suspension ring 12 at the top of the box 501, and when the damper is installed, the winding wheel 10 can be rotated by operating the second motor 9, so that the retraction of the pull rope 11 is controlled, and the box 501 and the upper connection member 3 are suspended to a certain height.
When the damper is installed, the user can suspend the case 501 and the upper link 3 to a certain height by operating the second motor 9, rotating the winding wheel 10 and releasing the pull cord 11. Allowing the user to easily mount the second end of the shock absorber on the upper link 3 without laboriously lifting or moving the heavy case 501;
During vibration testing of the shock absorber, the pull rope 11 is in a loose state and cannot affect the test, so that the box body 501 and the upper connecting piece 3 can move freely along with the movement of the shock absorber, and the accuracy and the reliability of the test are ensured.
Finally, it should be noted that the above-mentioned embodiments only illustrate rather than limit the technical solution of the present invention, and although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the present invention may be modified or equivalently replaced without departing from the spirit and scope of the present invention, and any modification or partial replacement thereof should be included in the scope of the claims of the present invention.
Claims (4)
1. A shock absorber fatigue resistance test stand, comprising:
The device comprises a rack (1), wherein the rack (1) comprises a pedestal (101) and a beam frame (102), the beam frame (102) is fixed on the pedestal (101), and a test area exists between the pedestal (101) and the beam frame (102);
a lower link (2), said lower link (2) being provided on the stand (101) and being adapted to connect to a first end of the shock absorber;
An upper connecting piece (3), wherein the upper connecting piece (3) is arranged on the beam frame (102) and is used for connecting the second end of the shock absorber;
The shock assembly (4) is arranged in the pedestal (101) and is used for applying a shock force to the lower connecting piece (2) so as to simulate the shock condition of the shock absorber in practice;
a weight increasing assembly (5), wherein the weight increasing assembly (5) is arranged on the beam frame (102) and is used for applying weight to the upper connecting piece (3) so as to simulate the load condition born by the shock absorber in practice;
The lower connecting piece (2) is in a rod-shaped structure, the lower connecting piece (2) can slide along the axis of the lower connecting piece, the first end of the lower connecting piece (2) is connected with the first end of the shock absorber, and the second end of the lower connecting piece (2) extends into the pedestal (101) and is in transmission connection with the shock excitation component (4);
The shock assembly (4) comprises:
The lifting beam (401), the lifting beam (401) is connected inside the pedestal (101) in a sliding way, and the second end of the lower connecting piece (2) is fixed on the side wall of the lifting beam (401), so that the lower connecting piece (2) is linked with the lifting beam (401);
The stress frame (402) is fixed in the pedestal (101) and is positioned right below the lifting beam (401), and when the lifting beam (401) moves downwards, the lifting beam (401) impacts on the stress frame (402) to generate a vibration force;
the driving wheel (403), the said driving wheel (403) rotates and connects to the force-bearing frame (402), the outline of the said driving wheel (403) has a spiral surface of a circle of whorls, the both ends of the spiral surface are connected by a level, the said level is perpendicular to the tangent plane of the spindle of the driving wheel (403);
The cross rod (404) is connected to the lifting beam (401), the cross rod (404) is arranged above the driving wheel (403) and parallel to the rotating shaft of the driving wheel (403), and when the driving wheel (403) rotates, the cross rod (404) can slide along the spiral surface of the driving wheel (403) to enable the cross rod (404) to lift the lifting beam (401) upwards;
An adjusting component (6) for adjusting the vibration amplitude of the damper is arranged on the vibration exciting component (4), and the adjusting component (6) comprises:
The number of the fixing sleeves (601) is two, the two fixing sleeves (601) are symmetrically fixed on the lifting beam (401), and the upper ends of the fixing sleeves (601) penetrate through the pedestal (101) and extend to the outside;
The screw rods (602) are arranged in each fixing sleeve (601), one screw rod (602) is arranged in each fixing sleeve, and the upper ends of the screw rods (602) extend out of the fixing sleeves (601) and are provided with driving heads;
The number of the connecting blocks (603) is two, the two connecting blocks (603) are respectively fixed at two ends of the cross rod (404), and the threaded ends of the two screw rods (602) are respectively connected to the corresponding connecting blocks (603) in a rotating way;
the weighting assembly (5) comprises:
the box body (501), the box body (501) is connected on the beam frame (102) in a sliding way, a placing cavity for placing blocks with different weight configurations is formed in the box body (501), and the upper connecting piece (3) is connected below the box body (501);
the inside of box (501) transversely rotates and is connected with lead screw (8), the one end of lead screw (8) runs through box (501) and is connected with the turning handle, go up connecting piece (3) meshing and connect on lead screw (8), when rotating lead screw (8), lead screw (8) can drive the position of adjusting connecting piece (3) relative box (501).
2. The shock absorber fatigue resistance test stand according to claim 1, wherein a roller (406) is rotatably connected to the cross bar (404), and the roller (406) is in rolling connection with the spiral surface.
3. The shock absorber fatigue resistance test bench according to claim 1, wherein a rubber pad (7) is fixed on the side wall of the lifting beam (401) opposite to the stress frame (402).
4. The shock absorber fatigue resistance test board according to claim 1, wherein the top of the beam frame (102) is rotatably connected with a winding wheel (10) through a second motor (9), a pull rope (11) is wound inside the winding wheel (10), a hanging ring (12) is fixed at the top of the box body (501), and the end part of the pull rope (11) is connected to the hanging ring (12).
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| CN118392526A (en) | 2024-07-26 |
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Application publication date: 20240726 Assignee: Fengxian Gerant Electric Vehicle Co.,Ltd. Assignor: Fengxian Zhonglian Electric Vehicle Technology Co.,Ltd. Contract record no.: X2025980028637 Denomination of invention: A shock absorber fatigue testing stand Granted publication date: 20241022 License type: Common License Record date: 20251020 |