Bending fatigue test device for wheels

Abstract

The utility model provides a bending fatigue test device for wheels, which comprises a box body, the upper part of the box body is provided with a wheel clamping mechanism, the lower part of the wheel clamping mechanism is provided with a loading mechanism in the box body, the loading mechanism is connected with a driving mechanism, and the driving mechanism is connected with a lifting mechanism; the device is mainly used for a car wheel bending fatigue test, the height of the loading main shaft assembly can be freely increased and decreased, the test requirements of wheels with different offset distances are met, and the universality of the device is improved; preferably, through cooperation of the first centering sleeve and the second centering sleeve, the device has the automatic centering and phase function at the same time, and has the advantages of saving manpower, being high in efficiency and applicability and the like.

Description

Technical Field

[0001] The present application relates to the technical field of wheel bending fatigue testing, and in particular to a wheel bending fatigue testing device. Background Art

[0002] The wheel is a rotating load-bearing component between the tire and the axle. The wheel and tire form an integral unit, jointly bearing the vehicle's gravity, braking force, driving force, lateral force generated by the vehicle's steering, and the resulting torque. The working conditions of the wheel are harsh, and its quality directly affects the safety of the vehicle during driving. Therefore, it should have a certain strength, rigidity and working durability. In the actual use of automobile wheels, more than 80% of wheel damage is caused by fatigue damage. In tests that measure fatigue performance, bending fatigue failure rate has the highest failure rate. For this reason, relevant wheel bending fatigue test standards such as GB / T, ISO, SAE, and JIS have been established, which stipulate the wheel bending test method to simulate the load conditions of the wheel under the action of bending moment.

[0003] Application number: 201420751827.1 discloses a technical solution in a wheel bending fatigue test device based on a single-chip microcomputer. A strain sensor is arranged on a bending shaft, a pressure plate is arranged at one end of the bending shaft, a turntable is arranged in the middle of the bending shaft, and a motor is connected to the bottom of the bending shaft. The pressure plate is connected to an amplifier, the amplifier is connected to an A / D converter, the A / D converter is connected to a single-chip microcomputer, the single-chip microcomputer is connected to a D / A converter, the D / A converter is connected to a frequency converter, and the frequency converter is connected to the motor. The utility model uses a single-chip microcomputer as the control core to form a closed-loop measurement and control system with feedback, so that the entire adjustment process is automatically controlled, meeting the requirements of automobile manufacturers for wheel bending fatigue strength testing, and providing experience and basis for the future development of wheel bending fatigue testing systems. The utility model has reliable performance, high control accuracy, and strong practicality.

[0004] However, in the above application, the wheel fixing device cannot achieve height adjustment, cannot meet the test requirements of wheels with different offsets, and has poor versatility.

[0005] In summary, it is necessary to provide a new technical solution to solve the above technical problems. Utility Model Content

[0006] The present application provides a bending fatigue testing device for wheels, comprising a box body, wherein a wheel clamping mechanism is provided on the upper portion of the box body, and a loading mechanism is provided in the box body at the lower portion of the wheel clamping mechanism, wherein the loading mechanism is connected to a driving mechanism, and the driving mechanism is connected to a lifting mechanism.

[0007] As a preferred solution, a counterweight seat is provided at the bottom of the box.

[0008] As a preferred solution, the loading mechanism includes a loading spindle assembly, the upper part of the loading spindle assembly is connected to a connecting plate, the lower part of the loading spindle assembly is connected to a rotating bearing seat, the rotating bearing seat is respectively connected to the loading screw and the driving mechanism, and a weight is provided on the loading screw.

[0009] As a preferred solution, the driving mechanism includes a driving motor, the output end of the driving motor is connected to a driving wheel, a driven wheel is provided on one side of the driving wheel, a transmission belt is provided on the driving wheel and the driven wheel, the driven wheel is connected to a universal joint assembly, one end of the universal joint assembly is connected to a rotating bearing seat, the other end of the universal joint assembly is connected to a bearing seat, and the bearing seat is connected to a lifting mechanism.

[0010] As a preferred solution, the lifting mechanism includes a servo motor, the servo motor is connected to the electric push rod, the electric push rod is connected to the lifting frame, the bearing seat is fixed to the bottom of the lifting frame, the electric push rod is also connected to the fixed plate, the fixed plate is connected to the shell, and the driving wheel is arranged in the shell.

[0011] As a preferred solution, a centering sleeve is connected to the upper part of the lifting frame, and a centering sleeve 1 is arranged inside the centering sleeve. The interior of the centering sleeve is connected to the interior of the lifting frame; a centering sleeve 2 is arranged on the outside of the loading spindle assembly to cooperate with the centering sleeve 1, and a phase pin is arranged on the outside of the centering sleeve 2.

[0012] As a preferred solution, a slide groove or a slide seat is provided on one side of the lifting frame, and a slide rail cooperating with the slide groove or the slide seat is provided inside the box.

[0013] As a preferred solution, the wheel clamping mechanism includes at least two sets of clamping devices arranged on the top of the box body, and the clamping devices include a locking bolt and an adjusting bolt, and pressure plates are installed on the locking bolt and the adjusting bolt.

[0014] As a preferred solution, a pressure ring is provided at the contact point between the lower portion of the pressure plate and the wheel.

[0015] As a preferred solution, the bottom of the wheel contacts a backing ring, which is arranged on the outside of the loading spindle assembly.

[0016] As a preferred solution, a counterweight seat is provided at the bottom of the box.

[0017] This application is mainly used for bending fatigue testing of car wheels. The height of the loading spindle assembly can be freely raised and lowered to meet the test requirements of wheels with different offsets, thereby improving the versatility of this application. Preferably, the combination of centering sleeve one and centering sleeve two enables this application to have automatic centering and phase functions at the same time, which has the characteristics of saving manpower, high efficiency and strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a structural schematic diagram of the loading mechanism of the present application;

[0019] Figure 2 is a front view of the box of the present application;

[0020] Figure 3 is a structural schematic diagram of the loading mechanism of the present application;

[0021] Figure 4 is a structural schematic diagram of the driving mechanism of the present application;

[0022] Figure 5 is a structural schematic diagram of the lifting mechanism of the present application;

[0023] Figure 6 is a structural schematic diagram of the wheel clamping mechanism of the present application;

[0024] 1, box; 2, counterweight seat; 3, workbench; 4, wheel clamping mechanism; 5, wheel; 6, loading mechanism; 7, driving mechanism; 8, lifting mechanism; 9, loading spindle assembly; 10, connecting disc; 11, rotating bearing seat; 12, loading screw; 13, weight; 14, driving motor; 15, driving wheel; 16, driven wheel; 17, transmission belt; 18, universal joint assembly; 19, bearing seat; 20, servo motor; 21, electric push rod; 22, lifting frame; 23, fixed plate; 24, shell; 25, centering sleeve; 26, centering sleeve I; 27, centering sleeve II; 28, phase pin; 29, sliding seat; 30, laser sensor; 31, locking bolt; 32, adjusting bolt; 33, T-shaped groove; 34, pressing plate; 35, pressing ring; 36, grommet. DETAILED DESCRIPTION

[0025] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. Figure 1 to the accompanying drawings Figure 6 The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0026] Example One:

[0027] As Figure 1As shown, the embodiment provides a bending fatigue test device for vehicle wheel, comprising a box body 1, preferably, the bottom of the box body 1 is provided with a counterweight seat 2, the counterweight seat 2 is connected with the bottom of the box body 1 through the connection mode commonly used in the prior art such as welding, bolt connection, screw connection, etc., the setting of the counterweight seat 2 can reduce the gravity center of the equipment, so that the equipment runs stably and reliably; the top of the box body 1 is a workbench 3, the workbench 3 is provided with a wheel clamping mechanism 4, which is used for clamping the wheel 5 to be tested, the lower part of the wheel clamping mechanism 4 is provided with a loading mechanism 6 in the box body 1, the loading mechanism 6 is connected with a driving mechanism 7, the driving mechanism 7 is connected with a lifting mechanism 8; the lifting mechanism 8 drives the wheel clamping mechanism 4, the loading mechanism 6 and the driving mechanism 7 to adjust the height as a whole, so as to meet the test requirements of different offset distance wheels and improve the universality of the embodiment.

[0028] Embodiment two:

[0029] The embodiment describes the specific structure of the loading mechanism 6, specifically:

[0030] As shown in Figure 2 , the loading mechanism 6 comprises a loading spindle assembly 9, as known, a strain gauge is attached in the loading spindle assembly 9, which detects the bending moment of the wheel test by transmitting and receiving signals; the upper part of the loading spindle assembly 9 is connected with a connecting disc 10, the connecting disc 10 is used for connecting with the wheel 5 to be tested, the loading spindle assembly 9 is connected with the connecting disc 10 through the connection mode commonly used in the prior art such as bolt, etc., the lower part of the loading spindle assembly 9 is connected with a rotating bearing seat 11, the rotating bearing seat 11 is respectively connected with a loading screw 12 and the driving mechanism 7, the loading screw 12 is provided with a weight 13, the bending moment of the loading spindle assembly 9 is generated by the high-speed rotation of the weight 13, the loading screw 12 and the weight 13 cooperate with each other, utilize the principle of lever, and can accurately exert the required bending moment on the wheel 5, so as to provide necessary loading conditions for accurately evaluating the bending fatigue performance of the wheel, etc.

[0031] Embodiment three:

[0032] The embodiment describes the specific structure of the driving mechanism 7, specifically:

[0033] As shown in Figure 4As shown, the driving mechanism 7 includes a driving motor 14, which adopts a variable frequency motor in the prior art. The variable frequency motor is energy-saving and efficient, easy to adjust the speed, and meets the requirements of different test bending moments; the output end of the driving motor 14 is connected to a driving wheel 15, and a driven wheel 16 is provided on one side of the driving wheel 15. A transmission belt 17 is provided on the driving wheel 15 and the driven wheel 16. Preferably, the transmission belt 17 adopts a multi-V belt, and the driven wheel 16 is connected to the universal coupling assembly 18, and the universal coupling assembly 18 can adapt to high-speed rotation; one end of the universal coupling assembly 18 is connected to the rotating bearing seat 11, and the other end of the universal coupling assembly 18 is connected to the bearing seat 19, and the bearing seat 19 is connected to the lifting mechanism 8.

[0034] The drive motor 14 is started, the driving wheel 15 rotates, and the driven wheel 16 is driven to rotate through the transmission belt 17, thereby driving the universal joint assembly 18 to rotate, compensating for the wheel offset during the wheel test and the misalignment of the loading spindle assembly 9.

[0035] Example 4:

[0036] This embodiment describes the specific structure of the lifting mechanism 8, specifically:

[0037] like Figure 5 As shown, the lifting mechanism 8 includes a servo motor 20, which is fixed on the outside of the box 1. The present application adopts a servo motor 20 with an encoder, which can accurately measure the lifting height of the equipment; the servo motor 20 is connected to the electric push rod 21, and the servo motor 20 provides power for the electric push rod 21. The electric push rod 21 is connected to the lifting frame 22, and the bearing seat 19 is fixed to the bottom of the lifting frame 22. The loading mechanism 6 is arranged in the lifting frame 22, and the electric push rod 21 is also connected to the fixed plate 23, and the fixed plate 23 is connected to the shell 24. The driving wheel 15 is arranged in the shell 24; when the servo motor 20 is started, the lifting frame 22 and the fixed plate 23 are driven up and down by the electric push rod 21, thereby driving the loading mechanism 6, the driving mechanism 7, and the wheel clamping mechanism 4 to move up and down as a whole, and the height can be adjusted arbitrarily to meet the installation requirements of different wheel offsets, thereby improving the adaptability of the present application; according to different wheel offsets, the lifting mechanism 8 can move the wheel 5 to a suitable test position.

[0038] Preferably, the upper part of the lifting frame 22 is connected with a centering sleeve 25, a centering sleeve one 26 is arranged in the centering sleeve 25, the inside of the centering sleeve 25 is communicated with the inside of the lifting frame 22; the outside of the loading spindle assembly 9 is provided with a centering sleeve two 27, the outside of the centering sleeve two 27 is provided with a phase pin 28; the phase pin 28, the centering sleeve two 27 and the centering sleeve one 26 are matched; the centering sleeve 25, the centering sleeve one 26, the centering sleeve two 27 and the phase pin 28 have the functions of centering and phase positioning, so that the wheel 5 does not need to be manually adjusted each time, and is automatically centered and phased, which has the characteristics of saving manpower, high efficiency and strong applicability.

[0039] Preferably, in order to facilitate movement, one side of the lifting frame 22 is provided with a sliding groove or sliding seat 29, and the inside of the box body 1 is provided with a sliding rail matched with the sliding groove or sliding seat 29.

[0040] Preferably, two sets of laser sensors 30 are installed on the lifting frame 22, and the two sets of laser sensors 30 are installed at 90° on the lifting frame 22, and the detection of the wheel test deviation is achieved through the emission and reception of signals.

[0041] Example five:

[0042] This embodiment describes the structure of the wheel clamping mechanism 4, in particular:

[0043] As shown in Figure 6 The wheel clamping mechanism 4 includes at least two sets of clamping devices arranged on the top of the box body 1, the clamping devices include locking bolts 31 and adjusting bolts 32, preferably, the workbench 3 is provided with a T-shaped groove 33, the locking bolts 31 and the adjusting bolts 32 can be embedded in the T-shaped groove 33 and adjusted according to the specifications, thereby realizing the locking of different models of wheels and improving the applicability; the locking bolts 31 and the adjusting bolts 32 are installed with a pressing plate 34, and the locking bolts 31 and the adjusting bolts 32 are tightened, which can realize the positioning of the locking bolts 31 and the adjusting bolts 32, and also can realize the locking of the wheel 5 by the pressing plate 34; the lower part of the pressing plate 34 is provided with a pressing ring 35 at the contact position with the wheel 5, preferably, the bottom of the wheel 5 is in contact with a gasket 36, and the gasket 36 is arranged on the outside of the loading spindle assembly 9; the pressing ring 35 and the gasket 36 can make the wheel 5 be installed firmly and reliably, and not loose for a long time, which meets the overload requirement of the bending fatigue test.

[0044] The present application is mainly used for the bending fatigue test of car wheels, the height of the loading spindle assembly can be freely lifted, which meets the test requirements of different offset distance wheels and improves the universality of the present application; preferably, the cooperation of the centering sleeve one and the centering sleeve two makes the present application have the functions of automatic centering and phasing, which has the characteristics of saving manpower, high efficiency and strong applicability.

[0045] The device, connection relationship and the like not specifically described above are all in the prior art, and the utility model does not make specific superfluous repetition here.

[0046] The standard parts used in the present application can be purchased from the market, and can be ordered according to the description and the drawings, and the specific connection mode of each part adopts the conventional means such as bolt, rivet and welding in the prior art, and the mechanical, part and equipment adopt the conventional type in the prior art.

[0047] The preferred mode of the present application is described in detail above in combination with the drawings, but the present application is not limited to the specific details in the above-described embodiments, and various simple modifications can be made to the technical scheme of the present application within the technical concept of the present application, and these simple modifications all belong to the protection scope of the present application.

[0048] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction, and in order to avoid unnecessary repetition, various possible combinations of the present application are not described again.

[0049] In addition, various different embodiments of the present application can also be combined in any manner, as long as it does not deviate from the idea of the present application, and the application should also be considered as disclosed content of the present application.

Claims

1. A wheel bending fatigue test device, comprising a box (1), wherein a wheel clamping mechanism (4) is provided on the upper portion of the box (1), characterized in that: A loading mechanism (6) is provided at the lower portion of the wheel clamping mechanism (4) in the box (1); the loading mechanism (6) is connected to a driving mechanism (7); and the driving mechanism (7) is connected to a lifting mechanism (8).

2. A wheel bending fatigue testing device according to claim 1, characterized in that: The loading mechanism (6) comprises a loading spindle assembly (9), the upper portion of the loading spindle assembly (9) is connected to a connecting plate (10), the lower portion of the loading spindle assembly (9) is connected to a rotating bearing seat (11), the rotating bearing seat (11) is respectively connected to a loading screw (12) and a driving mechanism (7), and a weight (13) is provided on the loading screw (12).

3. The wheel bending fatigue testing device according to claim 2, characterized in that: The driving mechanism (7) includes a driving motor (14), an output end of the driving motor (14) is connected to a driving wheel (15), a driven wheel (16) is provided on one side of the driving wheel (15), a transmission belt (17) is provided on the driving wheel (15) and the driven wheel (16), the driven wheel (16) is connected to a universal joint assembly (18), one end of the universal joint assembly (18) is connected to a rotating bearing seat (11), the other end of the universal joint assembly (18) is connected to a bearing seat (19), and the bearing seat (19) is connected to the lifting mechanism (8).

4. The wheel bending fatigue testing device according to claim 3, characterized in that: The lifting mechanism (8) includes a servo motor (20), the servo motor (20) is connected to an electric push rod (21), the electric push rod (21) is connected to a lifting frame (22), a bearing seat (19) is fixed to the bottom of the lifting frame (22), the electric push rod (21) is also connected to a fixed plate (23), the fixed plate (23) is connected to a housing (24), and the driving wheel (15) is arranged in the housing (24).

5. The wheel bending fatigue testing device according to claim 4, characterized in that: The upper part of the lifting frame (22) is connected to a centering sleeve (25), a centering sleeve (26) is arranged inside the centering sleeve (25), and the interior of the centering sleeve (25) is communicated with the interior of the lifting frame (22); the outer side of the loading spindle assembly (9) is provided with a centering sleeve (27) that cooperates with the centering sleeve (26), and the outer side of the centering sleeve (27) is provided with a phase pin (28).

6. The wheel bending fatigue testing device according to claim 4, characterized in that: A slide groove or a slide seat (29) is provided on one side of the lifting frame (22), and a slide rail cooperating with the slide groove or the slide seat (29) is provided inside the box (1).

7. The wheel bending fatigue testing device according to claim 1, characterized in that: The wheel clamping mechanism (4) comprises at least two groups of clamping devices arranged on the top of the box body (1), the clamping devices comprising a locking bolt (31) and an adjusting bolt (32), and a pressure plate (34) is installed on the locking bolt (31) and the adjusting bolt (32).

8. The wheel bending fatigue testing device according to claim 7, characterized in that: A pressure ring (35) is provided at the contact point between the lower part of the pressure plate (34) and the wheel (5).

9. The wheel bending fatigue testing device according to claim 2, characterized in that: The bottom of the wheel (5) contacts a backing ring (36) which is arranged on the outside of the loading spindle assembly (9).

10. The wheel bending fatigue testing device according to claim 1, characterized in that: A counterweight seat (2) is provided at the bottom of the box body (1).

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