CN110967198A - Automobile rear axle assembly semi-axis rotating bending fatigue test device - Google Patents
Automobile rear axle assembly semi-axis rotating bending fatigue test device Download PDFInfo
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- CN110967198A CN110967198A CN201911197988.4A CN201911197988A CN110967198A CN 110967198 A CN110967198 A CN 110967198A CN 201911197988 A CN201911197988 A CN 201911197988A CN 110967198 A CN110967198 A CN 110967198A
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- rear axle
- axle assembly
- automobile rear
- bending moment
- wheel
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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
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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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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a device for testing the rotary bending fatigue of a half shaft of an automobile rear axle assembly, which is used for detecting the rotary bending fatigue performance of the half shaft of the automobile rear axle assembly and comprises a motor and a bending moment applying component, wherein the motor is in transmission connection with the automobile rear axle assembly, the bending moment applying component comprises a bending moment applying bearing seat, a wheel edge substitute wheel and a driver, one output end of the automobile rear axle assembly is in transmission connection with the bending moment applying bearing seat, the wheel edge substitute wheel is sleeved outside the bending moment applying bearing seat, and the driver applies lateral force to the wheel edge substitute wheel. The invention simulates the running state of the automobile by controlling the output rotating speed of the motor, controls the output load of the driver to transmit the load to the half shaft and the corresponding bearing through the bending moment applying bearing seat to generate a bending moment effect, and thereby realizes the half shaft rotating bending fatigue bench test of the rear axle assembly in the running state.
Description
Technical Field
The invention relates to a test technology of an automobile rear axle assembly, in particular to a rotary bending fatigue test device for a half shaft of the automobile rear axle assembly.
Background
The automobile rear axle assembly transmits power, reduces speed and increases torsion, also plays a role in supporting the whole automobile, and is a key assembly on the automobile. In a user use scene, the reaction of a road surface is transmitted to a half shaft of a rear axle through wheels in the turning process of an automobile, additional bending moment is generated on the half shaft (particularly a semi-floating half shaft), the half shaft is subjected to bending fatigue damage, and a half shaft rotating bending fatigue bench test under the operation state of a rear axle assembly is required to be carried out in order to check the fatigue performance under the working conditions.
Disclosure of Invention
The invention aims to provide a half shaft rotation bending fatigue test device capable of performing a half shaft rotation bending fatigue test under an automobile rear axle assembly operation state.
The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
According to one aspect of the invention, the device for testing the rotary bending fatigue of the half shaft of the rear axle assembly of the automobile is used for detecting the rotary bending fatigue performance of the half shaft of the rear axle assembly of the automobile and comprises a motor and a bending moment applying component, wherein the motor is in transmission connection with the rear axle assembly of the automobile, the bending moment applying component comprises a bending moment applying bearing seat, a wheel edge substitute wheel and a driver, one output end of the rear axle assembly of the automobile is in transmission connection with the bending moment applying bearing seat, the wheel edge substitute wheel is sleeved outside the bending moment applying bearing seat, and the driver applies lateral force to the wheel edge substitute wheel.
In one embodiment, the wheel edge substitute wheel of the device is provided with a hole matched with the bending moment applying bearing seat, and the bending moment applying bearing seat is sleeved in the hole.
In one embodiment, the point of application of force by the drive of the apparatus to the edgewheel is located below the bending moment application bearing support.
In one embodiment, the device further comprises a tension and pressure sensor, wherein the tension and pressure sensor is arranged at the contact position of the wheel edge substitute wheel and the bending moment application bearing seat.
In one embodiment, the actuator of the device is an electro-hydraulic servo cylinder.
In one embodiment, the other output end of the automobile rear axle assembly of the device is fixedly connected with the wheel rim fixing device.
In one embodiment, the electric motor of the device is in transmission connection with a transmission shaft of the automobile rear axle assembly.
In one embodiment, the device further comprises a rear axle plate spring seat fixing assembly, and the two output ends of the automobile rear axle assembly are erected on the rear axle plate spring seat fixing assembly.
In an embodiment, the rear axle leaf spring fixing assembly of the device comprises a supporting seat and a limiting plate, the limiting plate is fixedly connected with the supporting seat, and two output ends of the automobile rear axle assembly respectively penetrate through the limiting plate and the supporting seat.
The embodiment of the invention has the beneficial effects that: the invention simulates the running state of the automobile by controlling the output rotating speed of the motor, controls the output load of the driver to transmit the load to the half shaft and the corresponding bearing through the bending moment applying bearing seat to generate a bending moment effect, and thereby realizes the half shaft rotating bending fatigue bench test of the rear axle assembly in the running state.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
The above features and advantages of the present disclosure will be better understood upon reading the detailed description of embodiments of the disclosure in conjunction with the following drawings. In the drawings, components are not necessarily drawn to scale, and components having similar relative characteristics or features may have the same or similar reference numerals.
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
wherein: 1-wheel edge fixing device; 2-rear axle plate spring seat fixing device A; 3-a rear axle assembly; 4-wheel edge substituted wheel; 5-an electro-hydraulic servo actuating cylinder; 6-bending moment applying bearing seat; 7-a transmission shaft; 8-motor.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. It is noted that the aspects described below in connection with the figures and the specific embodiments are only exemplary and should not be construed as imposing any limitation on the scope of the present invention.
As shown in FIG. 1, the embodiment of the invention discloses a device for testing the rotational bending fatigue of a half shaft of an automobile rear axle assembly, which is used for detecting the rotational bending fatigue performance of the half shaft of the automobile rear axle assembly 3 (sample), and comprises a motor 8 and a bending moment applying component, wherein the motor 8 is in transmission connection with a transmission shaft 7 of the automobile rear axle assembly 3 so as to simulate the running state of an automobile and meet the test requirements. The bending moment applying assembly comprises a bending moment applying bearing seat 6, a wheel edge substitute wheel 4 and a driver, one output end of the automobile rear axle assembly 3 is in transmission connection with the bending moment applying bearing seat 6, the wheel edge substitute wheel 4 is sleeved outside the bending moment applying bearing seat 6, and the driver applies lateral force to the wheel edge substitute wheel 4.
Specifically, the wheel edge substitute wheel 4 is provided with a hole matched with the bending moment application bearing seat 6, and the bending moment application bearing seat 6 is sleeved in the hole, so that when the driver pushes one side of the wheel edge substitute wheel 4, the wheel edge substitute wheel 4 can apply bending moment to the bending moment application bearing seat 6, and the bending moment is transmitted to the half shaft or the wheel hub, thereby realizing the rotary bending fatigue test of the half shaft of the rear axle assembly.
In this embodiment, the actuator is an electro-hydraulic servo cylinder 5 to ensure the accuracy of the magnitude of the applied force. Preferably, the point of application of the drive to the edgewise proxy wheel 4 is located below the bending moment application bearing mount 6 to simulate the side loading at the ground contact point of the edgewise proxy wheel 4 when the vehicle is turning.
In a possible embodiment, the testing device further comprises a tension and pressure sensor (not shown in the figure), wherein the tension and pressure sensor is arranged at a contact position between the wheel edge substitute wheel 4 and the bending moment application bearing seat 6, so that the stress condition of the bending moment application bearing seat 6 can be monitored in real time.
In a possible embodiment, the other output end of the automobile rear axle assembly 3 is fixedly connected with the wheel edge fixing device 1 to prohibit the rotation of the wheel edge fixing device, so that the test working condition of the detection end can be ensured.
As is readily understood by those skilled in the art, the device may further comprise a rear axle plate spring seat fixing component 2, and two output ends of the automobile rear axle assembly 3 are erected on the rear axle plate spring seat fixing component 2 and used for fixing the rear axle assembly and simulating the loading state. In this embodiment, fixed subassembly 2 of rear axle leaf spring includes supporting seat and limiting plate, limiting plate and supporting seat fixed connection, and two output of car rear axle assembly 3 pass between limiting plate and the supporting seat respectively.
In addition, the motor 8 and the electro-hydraulic servo cylinder 5 can be controlled in a linkage mode to simulate stress conditions under various vehicle conditions.
The working process of the device is briefly described as follows:
the automobile rear axle assembly 3 is fixed on the rear axle plate spring seat fixing device 2 according to the loading state, and the output end on one side of the automobile rear axle assembly 3 is fixed by the wheel edge fixing device 1 to prohibit rotation. The motor 8 inputs the rotating speed to the automobile rear axle assembly 3 through the transmission shaft 7, so that one end of the automobile rear axle assembly 3 which is not fixed rotates at a certain speed; the electro-hydraulic servo actuator 5 applies a side load simulating vehicle turning, the side load is applied to a simulated wheel grounding point of a wheel edge substitute wheel 4, and the side force is transmitted to a half shaft or a hub of the automobile rear axle assembly 3 through the bending moment application bearing seat 6, so that the rotation bending fatigue test of the half shaft of the automobile rear axle assembly is realized.
While, for purposes of simplicity of explanation, the methodologies are shown and described as a series of acts, it is to be understood and appreciated that the methodologies are not limited by the order of acts, as some acts may, in accordance with one or more embodiments, occur in different orders and/or concurrently with other acts from that shown and described herein or not shown and described herein, as would be understood by one skilled in the art.
The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The above description is only a preferred example of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present application should be included in the scope of the present application.
Claims (9)
1. The utility model provides a car rear axle assembly semi-axis rotating bending fatigue test device for detect car rear axle assembly's semi-axis rotating bending fatigue performance, its characterized in that: the automobile rear axle assembly comprises a motor and a bending moment applying assembly, wherein the motor is in transmission connection with the automobile rear axle assembly, the bending moment applying assembly comprises a bending moment applying bearing seat, a wheel edge replacing wheel and a driver, one output end of the automobile rear axle assembly is in transmission connection with the bending moment applying bearing seat, the wheel edge replacing wheel is sleeved outside the bending moment applying bearing seat, and the driver applies lateral force to the wheel edge replacing wheel.
2. The device for testing the rotary bending fatigue of the half shaft of the automobile rear axle assembly according to claim 1, is characterized in that: and the wheel edge substitute wheel is provided with a hole matched with the bending moment applying bearing seat, and the bending moment applying bearing seat is sleeved in the hole.
3. The device for testing the rotary bending fatigue of the half shaft of the automobile rear axle assembly according to claim 1, is characterized in that: the force application point of the driver on the wheel edge substitute wheel is positioned below the bending moment application bearing seat.
4. The device for testing the rotary bending fatigue of the half shaft of the automobile rear axle assembly according to claim 1, is characterized in that: the bending moment applying bearing seat is characterized by further comprising a pulling pressure sensor, wherein the pulling pressure sensor is arranged at the contact position of the wheel edge substitute wheel and the bending moment applying bearing seat.
5. The device for testing the rotary bending fatigue of the half shaft of the automobile rear axle assembly according to claim 1, is characterized in that: the driver is an electro-hydraulic servo actuating cylinder.
6. The device for testing the rotary bending fatigue of the half shaft of the automobile rear axle assembly according to claim 1, is characterized in that: and the other output end of the automobile rear axle assembly is fixedly connected with the wheel edge fixing device.
7. The device for testing the rotary bending fatigue of the half shaft of the automobile rear axle assembly according to claim 1, is characterized in that: the motor is in transmission connection with a transmission shaft of the automobile rear axle assembly.
8. The device for testing the rotary bending fatigue of the half shaft of the automobile rear axle assembly according to claim 1, is characterized in that: the automobile rear axle assembly is characterized by further comprising a rear axle plate spring seat fixing assembly, and two output ends of the automobile rear axle assembly are erected on the rear axle plate spring seat fixing assembly.
9. The device for testing the rotary bending fatigue of the half shaft of the automobile rear axle assembly according to claim 8, is characterized in that: the rear axle plate spring fixing assembly comprises a supporting seat and a limiting plate, the limiting plate is fixedly connected with the supporting seat, and two output ends of the automobile rear axle assembly respectively penetrate through the limiting plate and the supporting seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911197988.4A CN110967198A (en) | 2019-11-29 | 2019-11-29 | Automobile rear axle assembly semi-axis rotating bending fatigue test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911197988.4A CN110967198A (en) | 2019-11-29 | 2019-11-29 | Automobile rear axle assembly semi-axis rotating bending fatigue test device |
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| Publication Number | Publication Date |
|---|---|
| CN110967198A true CN110967198A (en) | 2020-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911197988.4A Pending CN110967198A (en) | 2019-11-29 | 2019-11-29 | Automobile rear axle assembly semi-axis rotating bending fatigue test device |
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| CN (1) | CN110967198A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432853A (en) * | 2021-06-17 | 2021-09-24 | 四川建安工业有限责任公司 | Drive axle assembly-based semi-floating half shaft rotation bending fatigue test device and method |
-
2019
- 2019-11-29 CN CN201911197988.4A patent/CN110967198A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432853A (en) * | 2021-06-17 | 2021-09-24 | 四川建安工业有限责任公司 | Drive axle assembly-based semi-floating half shaft rotation bending fatigue test device and method |
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