An automobile part fatigue test device

Abstract

The utility model discloses a kind of automobile parts fatigue test devices, including base and the multiple light poles of circumferential fixed connection in each corner of base, multiple light poles are slidably provided with movable plate, driving assembly is provided on base and is connected and drives movable plate vertical reciprocating movement, the top of multiple light poles is detachably installed with top plate;At least one stand is provided on movable plate, through-hole coaxial with stand is provided on top plate, vertical pipe coaxial with through-hole is provided on top plate upper surface, first outer thread is provided outside vertical pipe, top cover is provided on the upper end of vertical pipe and is threadedly connected with first outer thread, sliding hole slidingly cooperated between top cover and stand is provided on top cover. The automobile parts fatigue test device can be stable fatigue test on spring component on vehicle.

Description

Technical Field

[0001] This utility model relates to the field of fatigue testing devices, specifically to a fatigue testing device for automotive parts. Background Technology

[0002] Fatigue testing equipment for automotive components is a core device for verifying the durability and reliability of various parts in the chassis, body, and powertrain under alternating loads. For example, spring components in a vehicle frequently expand and contract during driving, so fatigue testing is necessary to understand their durability.

[0003] Patent CN216116634U discloses a fatigue testing mechanism for energy storage springs of GIS circuit breakers, comprising: a support assembly; a power assembly including a motor, a test shaft, a test elliptical plate fixed to the test shaft, and a weight adjustment plate, wherein the weight adjustment plate is detachably mounted on the test shaft; and a test assembly including a spring seat, a spring center column fixed to the spring seat, a test spring sleeved on the spring center column, and a movable plate movably connected to the spring center column.

[0004] The fatigue testing mechanism for the energy storage spring of the GIS circuit breaker has the following drawbacks: when it is necessary to replace the test spring, all the components above the spring must be disassembled and the movable plate must be removed before the test can be performed, which is very cumbersome. Therefore, it is necessary to provide a fatigue testing device that is easy to replace the spring to be tested. Utility Model Content

[0005] The purpose of this invention is to provide a fatigue testing device for automotive parts. This device can perform stable fatigue tests on spring components in vehicles, and the detachable top cover makes it easier to install and remove the spring to be tested.

[0006] To achieve the above objectives, this utility model provides a fatigue testing device for automotive parts, including a base and a plurality of optical rods circumferentially fixed to each corner of the base. Movable plates are slidably mounted on the optical rods. A driving assembly is provided on the base to connect to and drive the movable plates to reciprocate vertically. A top plate is detachably mounted on the top of each optical rod. At least one column is provided on the movable plate. A through hole coaxial with the column is provided on the top plate. A vertical tube coaxial with the through hole is provided on the upper surface of the top plate. A first external thread is provided on the outside of the vertical tube. A top cover threadedly connected to the first external thread is provided at the upper end of the vertical tube. A sliding hole is provided on the top cover for sliding engagement with the column.

[0007] Preferably, the movable plate is provided with an annular retaining ring coaxial with the column.

[0008] Preferably, a retaining ring is provided at the upper end of the column; the top plate is provided with an insertion hole for inserting the column, and the upper end of the column is provided with a second external thread, on which a nut is fitted.

[0009] Preferably, the drive assembly includes a motor and a crankshaft shafted thereto; the motor is mounted on the base, a connecting rod is sleeved on the eccentric shaft of the crankshaft, and a bearing seat rotatably connected to the connecting rod is provided on the bottom surface of the movable plate.

[0010] Preferably, the base is provided with a bearing seat that is rotatably connected to the end of the crankshaft.

[0011] Preferably, one side of the base is provided with a side protrusion plate that protrudes from the movable plate; the motor is mounted on the side protrusion plate.

[0012] Preferably, a water-cooled plate is installed on the side convex plate, and a gate-shaped protrusion covering the surface of the motor is provided in the middle of the water-cooled plate. An inlet water nozzle and an outlet water nozzle are respectively provided at both ends of the water-cooled plate.

[0013] Preferably, the columns are arranged in a matrix of four.

[0014] According to the above technical solution, this utility model provides a fatigue testing device for automotive parts. The fatigue testing device includes a base and a plurality of smooth rods circumferentially fixed to each corner of the base. Movable plates are slidably arranged on the plurality of smooth rods. A driving assembly is provided on the base to connect to and drive the movable plates to move vertically back and forth. A top plate is detachably installed at the top of the plurality of smooth rods. At least one column is provided on the movable plate. A through hole coaxial with the column is provided on the top plate. A vertical tube coaxial with the through hole is provided on the upper surface of the top plate. A first external thread is provided on the outside of the vertical tube. A top cover threadedly connected to the first external thread is provided at the upper end of the vertical tube. A sliding hole is provided on the top cover to slide with the column.

[0015] The usage and beneficial effects of this automotive component fatigue testing device are as follows: When in use, open the top cover, insert the spring to be tested into the vertical tube, and make the column inside the spring. Then close the top cover, so that both ends of the spring are pressed against the movable plate and the top cover respectively. The column is set through the sliding hole. Finally, the movable plate is driven to move vertically back and forth through the drive assembly to continuously compress and fatigue the spring to be tested.

[0016] During the fatigue testing of automotive parts, the upper end of the spring under test remains within the vertical tube, preventing it from popping outwards during compression. Furthermore, the column effectively limits the spring's displacement, improving testing accuracy. Since the column slides within the sliding hole throughout the test, its stability is also ensured. Additionally, the detachable top cover facilitates the easy installation and removal of the spring under test.

[0017] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention from a first perspective;

[0020] Figure 2 This is a schematic diagram of a preferred embodiment of the present invention from a second perspective;

[0021] Figure 3 This is a structural schematic diagram of a preferred embodiment of the present invention from a third perspective.

[0022] Explanation of reference numerals in the attached figures

[0023] 1-Base; 2-Movable plate; 3-Top plate; 4-Smooth rod; 5-Bearing seat; 6-Motor; 7-Crankshaft; 8-Retaining ring; 9-Nut; 10-Column; 11-Top cover; 12-Vertical tube; 13-First external thread; 14-Annular retaining ring; 15-Spring to be tested; 16-Water cooling plate; 17-Inlet water nozzle; 18-Outlet water nozzle; 19-Connecting rod; 20-Side convex plate; 21-Through hole; 22-Shaft seat. Detailed Implementation

[0024] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0025] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside" in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as a limitation on the term.

[0026] See Figure 1-3The automotive component fatigue testing device shown includes a base 1 and multiple guide rods 4 circumferentially fixed to each corner of the base 1. Movable plates 2 are slidably mounted on the multiple guide rods 4. A drive assembly is provided on the base 1 to connect to and drive the movable plates 2 to move vertically back and forth. A top plate 3 is detachably mounted on the top of the multiple guide rods 4. At least one column 10 is provided on the movable plate 2. A through hole 21 coaxial with the column 10 is provided on the top plate 3. A vertical tube 12 coaxial with the through hole 21 is provided on the upper surface of the top plate 3. A first external thread 13 is provided on the outside of the vertical tube 12. A top cover 11 threadedly connected to the first external thread 13 is provided at the upper end of the vertical tube 12. A sliding hole is provided on the top cover 11 to slide with the column 10.

[0027] By implementing the above technical solution, when using the automotive component fatigue testing device, the top cover 11 is opened, the spring 15 to be tested is inserted into the vertical tube 12, and the column 10 is placed inside the spring. Then, the top cover 11 is closed, so that both ends of the spring are pressed against the movable plate 2 and the top cover 11 respectively. The column 10 is set through a sliding hole. Finally, the movable plate 2 is driven to move vertically back and forth through the drive assembly to continuously compress and fatigue test the spring 15 to be tested. During the test, the upper end of the spring 15 to be tested is always inside the vertical tube 12, and it will not break outward during the compression process. In addition, the column 10 can also limit the spring 15 to be tested within a certain range, limiting the offset of the spring 15 to be tested and improving the test accuracy. Since the column 10 slides within the sliding hole throughout the test, the stability of the column 10 is also guaranteed. In order to facilitate the rotation of the top cover 11, a regular hexagonal surface can be provided on the outside of the top cover 11 to facilitate the wrench engagement. In addition, the detachable top cover 11 makes it easier to install and remove the spring 15 to be tested.

[0028] To prevent the top cover 11 from vibrating and loosening, an anti-loosening internal thread can be provided on the inside of the top cover 11, or thread-locking adhesive can be used.

[0029] In this embodiment, the movable plate 2 is provided with an annular retaining ring 14 coaxial with the column 10. This arrangement provides lateral restraint to the bottom of the spring 15 to be tested.

[0030] In this embodiment, a retaining ring 8 is provided at the upper end of the column 10; the top plate 3 is provided with an insertion hole for inserting the column 10, and the upper end of the column 10 is provided with a second external thread, on which a nut 9 is fitted. With this arrangement, the retaining ring 8 is used to limit the lower position of the top plate 3, and the nut 9 is used to lock the top plate 3 to achieve a detachable connection.

[0031] In this embodiment, the drive assembly includes a motor 6 and a crankshaft 7 axially connected thereto. The motor 6 is mounted on the base 1, and a connecting rod 19 is sleeved on the eccentric shaft of the crankshaft 7. A bearing seat 22 rotatably connected to the connecting rod 19 is provided on the bottom surface of the movable plate 2. The motor 6 drives the crankshaft 7 to rotate, causing the eccentric shaft to rotate eccentrically, thereby driving the connecting rod 19 to push the movable plate 2 to move vertically.

[0032] In this embodiment, a bearing seat 5 is provided on the base 1 and is rotatably connected to the end of the crankshaft 7. The bearing seat 5 improves the stability of the crankshaft 7 rotation.

[0033] In this embodiment, a side protrusion plate 20 protruding from the movable plate 2 is provided on one side of the base 1; the motor 6 is mounted on the side protrusion plate 20. The side protrusion plate 20 allows the motor 6 to be mounted on the outside of the base 1, minimizing the coverage by the movable plate 2 and increasing the heat dissipation effect of the motor 6 during operation.

[0034] In this embodiment, a water-cooled plate 16 is installed on the side convex plate 20. A gate-shaped protrusion covering the surface of the motor 6 is provided in the middle of the water-cooled plate 16. An inlet nozzle 17 and an outlet nozzle 18 are respectively provided at both ends of the water-cooled plate 16. With this arrangement, coolant is introduced into the water-cooled plate 16 through the inlet nozzle 17, carrying away a portion of the heat generated by the motor 6 during operation through heat transfer.

[0035] In addition, the surfaces of the water-cooled plate 16 and the motor 6 are made flat, and thermal grease can be applied to the contact surface between them to improve heat transfer. Copper tubing is preferred for the water-cooled plate 16. The structure of the water-cooled plate 16 can be a single flat tube or multiple flat tubes connected in parallel, with water manifolds at both ends, which are connected to the inlet water nozzle 17 and the outlet water nozzle 18, respectively.

[0036] In this embodiment, four columns 10 are arranged in a matrix. This arrangement allows for the simultaneous testing of four springs 15 to be tested.

[0037] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0038] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0039] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A fatigue testing device for automotive parts, characterized in that, The fatigue testing device for automotive parts includes a base (1) and a plurality of light rods (4) circumferentially fixed at each corner of the base (1). Movable plates (2) are slidably arranged on the plurality of light rods (4). A drive assembly is provided on the base (1) to connect and drive the movable plates (2) to move vertically back and forth. A top plate (3) is detachably installed on the top of the plurality of light rods (4). The movable plate (2) is provided with at least one column (10), the top plate (3) is provided with a through hole (21) coaxial with the column (10), the upper surface of the top plate (3) is provided with a vertical tube (12) coaxial with the through hole (21), the vertical tube (12) is provided with a first external thread (13), the upper end of the vertical tube (12) is provided with a top cover (11) threadedly connected to the first external thread (13), and the top cover (11) is provided with a sliding hole that slides with the column (10).

2. The fatigue testing device for automotive parts according to claim 1, characterized in that, The movable plate (2) is provided with an annular retaining ring (14) coaxial with the column (10).

3. The fatigue testing device for automotive parts according to claim 1, characterized in that, A retaining ring (8) is provided at the upper end of the column (10); The top plate (3) is provided with an insertion hole for inserting the column (10), and the upper end of the column (10) is provided with a second external thread, on which a nut (9) is fitted.

4. The fatigue testing device for automotive parts according to claim 1, characterized in that, The drive assembly includes a motor (6) and a crankshaft (7) connected thereto; The motor (6) is mounted on the base (1), and a connecting rod (19) is sleeved on the eccentric shaft of the crankshaft (7). The bottom surface of the movable plate (2) is provided with a bearing seat (22) that is rotatably connected to the connecting rod (19).

5. The fatigue testing device for automotive parts according to claim 4, characterized in that, The base (1) is provided with a bearing seat (5) that is rotatably connected to the end of the crankshaft (7).

6. The fatigue testing device for automotive parts according to claim 4, characterized in that, The base (1) is provided with a side protrusion plate (20) protruding from the movable plate (2) on one side; The motor (6) is mounted on the side convex plate (20).

7. The fatigue testing device for automotive parts according to claim 6, characterized in that, A water-cooled plate (16) is installed on the side convex plate (20). A gate-shaped protrusion covering the surface of the motor (6) is provided in the middle of the water-cooled plate (16). An inlet water nozzle (17) and an outlet water nozzle (18) are respectively provided at both ends of the water-cooled plate (16).

8. The fatigue testing device for automotive parts according to claim 1, characterized in that, The columns (10) are arranged in a matrix of four.

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