CN210198727U

CN210198727U - Radial fatigue testing machine for wheel

Info

Publication number: CN210198727U
Application number: CN201921498070.9U
Authority: CN
Inventors: Bin Xiong; 熊斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-09
Filing date: 2019-09-09
Publication date: 2020-03-27
Anticipated expiration: 2029-09-09

Abstract

The application discloses wheel radial fatigue testing machine relates to tire test technical field. The wheel radial fatigue testing machine is used for simulating and testing the radial fatigue of a tire assembly to be tested when the tire assembly passes through a deceleration strip with dense frequency, and comprises a rack, a linear sliding table assembly, a first driving device, a rotary hub assembly and a second driving device; the linear sliding table assembly is connected to the rack, and the tire assembly to be tested is arranged on the linear sliding table assembly and can do linear reciprocating motion along the preset direction; the first driving device is connected to the rack and used for driving the tire assembly to be tested to do linear reciprocating motion along the preset direction; the rotating hub assembly is connected with the frame and comprises a rotating hub, the peripheral surface of the rotating hub is provided with an elastic roadblock, and the elastic roadblock can retract towards the center of the rotating hub; the second driving device is connected to the frame and used for driving the rotating hub to rotate. The wheel radial fatigue testing machine can simulate the wheel radial fatigue test under the condition of passing through a speed reduction roadblock with dense frequency.

Description

Radial fatigue testing machine for wheel

Technical Field

The application relates to the technical field of tire testing, in particular to a radial fatigue testing machine for a wheel.

Background

The wheel is the main bearing part of the vehicle running part and is one of the most important safety parts of the whole vehicle performance. The wheel serving as an automobile structural member has a relatively complex assembly relationship, plays an important role in realizing the functions of an automobile, meets the requirements of reliability and durability, has sufficient strength, and also needs to consider road condition specificity, for example, the arrangement frequency of the speed reduction roadblock is particularly dense, and the wheel product needs to meet the adaptability of special road conditions.

At present, a radial fatigue testing machine for wheels only simulates the radial bearing condition of the wheels under the common road condition, and a plurality of unreasonable places can be formed without considering the condition that a plurality of high-frequency-density deceleration roadblocks appear in the actual road condition, so that the traditional fatigue testing machine has great limitation, and a satisfactory scheme is difficult to obtain by taking the result of the traditional fatigue testing machine as the basis for designing and developing the wheels.

SUMMERY OF THE UTILITY MODEL

The application provides a radial fatigue testing machine of wheel can simulate and carry out the radial fatigue test of wheel under the intensive speed reduction roadblock condition of passing frequency.

The wheel radial fatigue testing machine is used for simulating and testing the radial fatigue of a tire assembly to be tested when the tire assembly passes through a deceleration strip with dense frequency, and comprises a rack, a linear sliding table assembly, a first driving device, a rotary hub assembly and a second driving device; the linear sliding table assembly is connected to the rack, and the tire assembly to be tested is arranged on the linear sliding table assembly and can do linear reciprocating motion along the preset direction; the first driving device is connected to the rack and used for driving the tire assembly to be tested to do linear reciprocating motion along the preset direction; the rotating hub assembly is connected with the frame and comprises a rotating hub, the peripheral surface of the rotating hub is provided with an elastic roadblock, and the elastic roadblock can retract towards the center of the rotating hub; the second driving device is connected to the frame and used for driving the rotating hub to rotate.

According to the technical scheme, the first driving device is used for loading the force load in the preset direction (namely simulating the radial direction of the tire assembly to be tested when the automobile runs) on the tire assembly to be tested, and can simulate the pressure of the automobile of different types on the tire assembly to be tested in the running process; the second driving device drives the rotating hub to rotate, so that the tire assembly to be tested is driven by the rotating hub to rotate (namely, the rotation situation of the tire assembly to be tested during the running of the automobile is simulated), and the rotation speed of the tire assembly to be tested in the running process of the automobile can be simulated; the linear sliding table assembly is used for the tire assembly to be tested to do linear reciprocating motion, so that the tire assemblies to be tested with different sizes can be conveniently replaced; the rotating hub is provided with the elastic roadblocks (different quantities can be set according to actual use requirements), so that the situation that the tire assembly to be tested contacts the deceleration roadblocks in the running process of the automobile can be simulated; the elastic roadblock can retract towards the center of the rotating hub, and the vibration reduction situation of the tire assembly to be tested when the vehicle runs through the deceleration roadblock in the running process can be simulated. The wheel radial fatigue testing machine can simulate and test the radial fatigue of the tire assembly to be tested when the tire assembly passes through the deceleration strip with dense frequency.

In a first possible implementation manner of the present application, the hub assembly further includes a bearing seat and a hub spindle, the bearing seat is connected to the frame, and the hub spindle is rotatably connected to the bearing seat; the rotating hub comprises a cylindrical outer ring and an inner frame arranged in the outer ring, and the outer ring is connected with a main shaft of the rotating hub; the elastic roadblock is connected with the inner frame, and the outer ring is provided with a through hole for the elastic roadblock to extend out or retract back to the outer ring.

According to the technical scheme, the rotary hub comprises the outer ring and the inner frame, the inner frame is used for setting the elastic roadblock, the outer ring is used for rotating and driving the tire assembly to be tested to rotate, and smooth radial fatigue during the simulation test of the tire assembly to be tested passing through the deceleration strip with dense frequency is guaranteed.

With reference to the first possible implementation manner of the present application, in a second possible implementation manner of the present application, the elastic roadblock includes a roadblock speed reducer, a guide rod and a spring; the guide rod is connected to the inside casing, and the guide rod is located to roadblock speed reducer movable sleeve, and the spring sets up between inside casing and roadblock speed reducer, and roadblock speed reducer can stretch out or retract the outer lane by the opening.

Above-mentioned technical scheme, the flexible steady of roadblock speed reducer can be guaranteed to the guide bar, and the relative guide bar of the roadblock speed reducer of being convenient for of spring is flexible, and the damping situation when the wheel passes through the deceleration strip in the process of actually traveling can be simulated to the spring simultaneously.

With reference to the second possible implementation manner of the present application, in a third possible implementation manner of the present application, the barrier speed reducer includes a fixing portion and a speed reducing portion; the two guide rods are connected to the inner frame at intervals, the fixing parts are L-shaped, the two fixing parts are respectively sleeved on the two guide rods, and the two fixing parts are connected to the speed reducing part at intervals; the outer ring can extend out or retract from the through hole, a movable cavity for the fixing part to move is formed between the speed reducing part and the fixing part, and a fixing cavity of the positioning spring is enclosed among the speed reducing part, the two fixing parts and the inner frame.

Above-mentioned technical scheme, roadblock reduction gear includes fixed part and speed reduction portion, and two L shape fixed parts cooperate jointly with two guide bars for form the flexible activity cavity of the relative guide bar of realization fixed part between fixed part and the speed reduction portion, and speed reduction portion, enclose into the fixed cavity that has positioning spring between two fixed parts and the inside casing, thereby guarantee roadblock reduction gear's steady flexible, radial fatigue's when guaranteeing the simulation test tire assembly that awaits measuring and passing through the intensive deceleration strip of frequency go on smoothly.

In a fourth possible implementation of the present application, in combination with the third possible implementation of the present application, four elastic barriers are provided at intervals of 90 ° along the circumferential wall of the hub.

According to the technical scheme, the four elastic roadblocks are arranged at intervals of 90 degrees, so that the deceleration strip which is dense in frequency and is passed by wheels in actual running is simulated.

With reference to the third possible implementation manner of the present application, in a fifth possible implementation manner of the present application, the speed reduction portion is made of a rubber material.

Above-mentioned technical scheme, the speed reduction portion adopts the rubber material to make for the speed reduction portion has certain damping performance, further simulates the damping situation when actually going in-process wheel through the deceleration strip.

In a sixth possible implementation manner of the present application, in combination with the first possible implementation manner of the present application, the linear sliding table assembly includes a sliding table bearing seat, a guide rail, a sliding table, a linear bearing, and a tire mounting rotating shaft; the slip table bearing frame is connected in the frame, and the guide rail is connected in the slip table bearing frame, and the slip table passes through linear bearing to be connected in the guide rail, and dress child pivot is connected in the slip table, and the tire assembly that awaits measuring is connected in dress child pivot.

Above-mentioned technical scheme, the tire assembly that awaits measuring connects the slip table through dress child pivot, and the slip table is by linear bearing sliding connection in guide rail to the realization is awaited measuring the tire assembly and is based on the guide rail and make straight reciprocating motion.

With reference to the sixth possible implementation manner of the present application, in a seventh possible implementation manner of the present application, the first driving device includes an oil cylinder and an oil cylinder rod; the hydro-cylinder is connected in the frame, and the one end of hydro-cylinder pole is connected in the hydro-cylinder, and the other end of hydro-cylinder pole can support by in the slip table and along presetting direction loading power load to the slip table on.

According to the technical scheme, the first driving device adopts the oil cylinder, the oil cylinder rod is driven to move through the oil cylinder, so that the oil cylinder rod drives the sliding table to move, meanwhile, the oil cylinder rod can load force to the sliding table along the preset direction, and therefore the pressure of automobiles of different automobile types on the tire assembly to be tested in the driving process is simulated.

With reference to the seventh possible implementation manner of the present application, in an eighth possible implementation manner of the present application, the second driving device includes a motor and a belt transmission structure, and the motor drives the hub spindle through the belt transmission structure.

According to the technical scheme, the second driving device adopts the motor and the belt transmission structure, and the motor drives the rotating hub spindle to rotate through the belt transmission structure, so that the rotation situation of the tire assembly to be tested during the running of the automobile is simulated, and different rotating speeds of the tire assembly to be tested during the running of the automobile can be simulated.

With reference to the eighth possible implementation manner of the present application, in a ninth possible implementation manner of the present application, the wheel radial fatigue testing machine further includes a control system, where the control system includes a first sensor for monitoring a force load applied by the cylinder rod, a second sensor for monitoring a rotation speed of the hub, and a data processing module; the first sensor is connected with the oil cylinder rod, and the second sensor is connected with the main shaft of the rotating hub; the first sensor and the second sensor are both in communication connection with the data processing module.

According to the technical scheme, the control system is used for carrying out classification analysis processing on the data of the rotating speed and the force load, so that the radial fatigue test of the wheel radial fatigue testing machine when the tire assembly to be tested passes through the deceleration strip with dense frequency is simulated.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required 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 application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a schematic view of a wheel radial fatigue testing machine in an alternative embodiment of the present application from a first perspective;

FIG. 2 is a schematic view of a wheel radial fatigue testing machine in an alternative embodiment of the present application from a second perspective;

fig. 3 is an enlarged view of fig. 2 at iii.

Icon: 10-wheel radial fatigue tester; 12-a tire assembly to be tested; 100-a frame; 200-a linear sliding table assembly; 210-a slip table bearing mount; 220-a guide rail; 230-a sliding table; 300-a first drive; 310-oil cylinder; 320-cylinder rod; 400-a rotating hub assembly; 410-rotating hub; 412-outer lane; 4122-through opening; 414-inner frame; 420-a bearing seat; 430-rotating hub main shaft; 440-a resilient barricade; 441-barrier deceleration; 4412-a fixed part; 4414-a deceleration section; 442-a movable cavity; 443-a fixed cavity; 444-guide bar; 446-a spring; 500-a second drive; 510-a pulley; 610-a first sensor; 620 — second sensor.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it is to be noted that the terms "inside", "below", and the like refer to orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally arranged when products of the application are used, and are used only for convenience in describing the application and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; they may be mechanically coupled, directly coupled, indirectly coupled through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In this application, unless expressly stated or limited otherwise, the first feature may be directly on or under the second feature or may include both the first and second features being in direct contact, but also the first and second features being in contact via another feature between them, not being in direct contact. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The existing wheel radial fatigue testing machine only simulates the radial bearing condition of wheels under the common road condition, does not consider the road condition of a speed reduction roadblock with dense frequency setting, and has certain limitation.

In view of the above, an alternative embodiment of the present application provides a wheel radial fatigue testing machine 10, which fully considers the adaptability of a wheel in the case of a frequency-intensive deceleration roadblock, and can simulate a wheel radial fatigue test in the case of a passing frequency-intensive deceleration roadblock, so as to obtain a satisfactory wheel design scheme.

Referring to fig. 1 to 3, fig. 1 shows a specific structure of a wheel radial fatigue testing machine 10 provided in an alternative embodiment of the present application at a first viewing angle, fig. 2 shows a specific structure of the wheel radial fatigue testing machine 10 provided in an alternative embodiment of the present application at a second viewing angle, and fig. 3 is a specific structure at iii in fig. 2.

The wheel radial fatigue testing machine 10 comprises a frame 100, a linear sliding table assembly 200, a first driving device 300, a rotary hub assembly 400, a second driving device 500 and a control system. Wherein the control system comprises a first sensor 610, a second sensor 620 and a data processing module. The first driving device 300, the linear sliding table assembly 200, the rotating hub assembly 400 and the second driving device 500 are sequentially connected to the frame 100 from left to right, and for convenience of description, a central axis direction of the frame 100 from left to right is defined as a preset direction, and the preset direction is a radial direction of the simulated tire assembly 12 to be tested when the automobile runs.

In the embodiments of the present application, terms such as "left" and "right" describing the positional relationship are determined based on the positional relationship in the drawings of the specification, and are not described in detail below.

The first driving device 300 is used for loading a force load in a preset direction (i.e. simulating a radial direction of the tire assembly 12 to be tested when the automobile runs) on the tire assembly 12 to be tested, and can simulate the pressure of the automobile of different types on the tire assembly 12 to be tested during running, and the first driving device 300 comprises an oil cylinder 310 and an oil cylinder rod 320. The cylinder 310 is connected to the frame 100, the left end of the cylinder rod 320 is connected to the cylinder 310, and the cylinder rod 320 is arranged along a preset direction, so that the cylinder rod 320 can reciprocate linearly along the preset direction under the driving of the cylinder 310. The first sensor 610 is connected to the circumferential wall of the right end of the cylinder rod 320, and the first sensor 610 is used for monitoring the force load loaded on the cylinder rod 320, and can simulate the radial pressure of the tire assemblies 12 to be tested of different vehicle types in the actual running process by loading force loads of different sizes.

The linear sliding table assembly 200 is used for the tire assembly 12 to be tested to make a linear reciprocating motion, so as to facilitate replacement of the tire assembly 12 to be tested with different sizes, and the linear sliding table assembly 200 includes four sliding table bearing seats 210, two guide rails 220, a sliding table 230, four linear bearings (not shown in the figure) and a tire mounting rotating shaft (not shown in the figure).

Every two sliding table bearing seats 210 are connected to the frame 100 at intervals along a preset direction, connecting lines of the four sliding table bearing seats 210 are rectangles with long edges parallel to the preset direction, the width of each rectangle is larger than the thickness of the tire assembly 12 to be tested, one guide rail 220 is connected between the two sliding table bearing seats 210 along the preset direction, finally, two guide rails 220 arranged at intervals are connected to the frame 100, and the oil cylinder 310 is arranged on a central line between the two guide rails 220. The sliding table 230 is connected to the two guide rails 220 through four linear bearings, respectively, so that the sliding table 230 can linearly reciprocate on the two guide rails 220 in a predetermined direction. The tire mounting rotating shaft is installed on the sliding table 230, and the tire assembly 12 to be tested is rotatably connected to the sliding table 230 through the tire mounting rotating shaft, so that the tire assembly 12 to be tested can be placed between the two guide rails 220, and the direction of the tire assembly 12 to be tested can coincide with the preset direction when rotating around the tire mounting rotating shaft.

The tire assembly 12 to be tested is connected with the sliding table 230 through the tire mounting rotating shaft, and the sliding table 230 is connected with the guide rail 220 in a sliding manner through a linear bearing, so that the tire assembly 12 to be tested can linearly reciprocate along the preset direction based on the guide rail 220; meanwhile, the to-be-tested tire assemblies 12 of different sizes or models can be conveniently disassembled and assembled so as to carry out radial fatigue tests on the to-be-tested tire assemblies 12 of different vehicle types. The right end of the cylinder rod 320 can abut against the sliding table 230, and is matched with the first sensor 610 to load a stable force load to the sliding table 230 along a preset direction, so as to drive the sliding table 230 to drive the tire assembly 12 to be tested to move along the preset direction, when the tire assembly 12 to be tested abuts against the rotating hub 410 (described in detail later), a reverse acting force of the force load acts on the tire assembly 12 to be tested along a direction opposite to the preset direction, and thus radial pressure borne by the tire assembly 12 to be tested in an actual driving process is simulated.

Hub assembly 400 includes two bearing housings 420, a hub spindle 430, and a hub 410. The two bearing seats 420 are arranged at the right end of the frame 100 along a direction perpendicular to the preset direction, the hub spindle 430 is rotatably connected to the two bearing seats 420, the hub spindle 430 is connected to a second sensor 620, and the second sensor 620 is used for monitoring the rotating speed of the hub 410. The rotating hub 410 comprises a cylindrical outer ring 412 and an inner frame 414 arranged inside the outer ring 412, the inner frame 414 is enclosed by four metal plates with the same size and is inscribed inside the outer ring 412, the center of the outer ring 412 is connected to the rotating hub main shaft 430, so that the rotating hub main shaft 430 can drive the outer ring 412 to rotate, and the rotating direction of the outer ring 412 coincides with the preset direction, so that the diameter direction of the outer ring 412, the diameter direction of the tire assembly 12 to be tested and the oil cylinder rod 320 are all located on the same plane.

The second driving device 500 includes a motor and a belt transmission structure, the belt transmission structure includes a belt pulley 510 and an annular belt, the belt pulley 510 includes a driving wheel and a driven wheel, an output end of the motor is connected with the driving wheel, the driving wheel is connected with the driven wheel through the annular belt, the driven wheel is connected with one end (upper direction in fig. 1) of the hub spindle 430, the motor drives the hub spindle 430 to rotate through the belt transmission structure, so as to drive the hub 410 to rotate, when the to-be-tested tire assembly 12 is abutted against the outer ring 412 of the hub 410 under the driving of the first driving device 300, the outer ring 412 of the hub 410 can drive the to-be-tested tire assembly 12 to rotate, so as to simulate a rotation state of the to-be-tested tire assembly 12 in an actual driving process (during actual driving, ground is stationary, wheels rotate; when the to-be-tested tire assembly 12 is subjected to radial, hub 410 corresponds to the ground and the power in this case comes from the rotation of hub 410). The second driving device 500 and the second sensor 620 cooperate to control the rotation speed of the hub spindle 430, so as to simulate the rotation of the tire assembly 12 to be tested during the actual running of the vehicle, and simulate different rotation speeds of the tire assembly 12 to be tested during the running of the vehicle.

Referring to fig. 3, the elastic barrier 440 includes a barrier decelerator 441, two guide rods 444 and a spring 446, and the barrier decelerator 441 includes a deceleration portion 4414 and two fixing portions 4412.

Two guide rods 444 are connected to the center of the inner frame 414 at intervals by screw-fitting, and a nut is provided at the upper end of the guide rods 444 (i.e., the end away from the inner frame 414). The fixing portion 4412 is an L-shaped metal block, a through hole is formed on a long side of the fixing portion 4412, the fixing portion 4412 is sleeved on the guide rod 444 through the through hole, and the fixing portion 4412 is limited by a nut and the inner frame 414 so as to prevent the fixing portion 4412 from sliding out of the guide rod 444. The sum of the lengths of the long sides of the two fixing portions 4412 is smaller than the distance between the two guide rods 444, and the speed reducing portion 4414 is a bump made of rubber, so that the speed reducing portion 4414 has certain vibration damping performance, and vibration damping situations when a wheel passes through a speed reducing belt in the actual driving process are simulated. The lower end of the decelerating portion 4414 is connected to the short sides of the two fixing portions 4412 such that a movable cavity 442 for extending and contracting the fixing portion 4412 with respect to the guide rod 444 is formed between the lower end of the decelerating portion 4414 and the fixing portion 4412, a fixing cavity 443 for positioning a spring 446 is defined between the lower end of the decelerating portion 4414, the short sides of the two fixing portions 4412 and the inner frame 414, and the spring 446 is disposed in the fixing cavity 443. The outer ring 412 of the hub 410 is correspondingly provided with a through hole 4122, the through hole 4122 allows the speed reducer 4414 to extend out of or retract into the outer ring 412, and the movable cavity 442 is sized such that when the speed reducer 4414 retracts to abut against the guide rod 444, the end surface of the speed reducer 4414 far away from the inner frame 414 does not expose too much of the through hole 4122, so that the tire assembly 12 to be tested can be smoothly driven by the outer ring 412 of the hub 410 to rotate through the area. The guide rod 444 can guarantee that the roadblock speed reducer 441 stretches stably, the spring 446 enables the roadblock speed reducer 441 to stretch relative to the guide rod 444 conveniently, and meanwhile, the spring 446 can simulate the main vibration reduction situation when a wheel passes through a speed bump in the actual driving process, so that the roadblock speed reducer 441 can stretch stably, and the radial fatigue of the tire assembly 12 to be tested in the simulation test when the tire assembly passes through the speed bump with dense frequency is guaranteed to be performed smoothly.

In the present application, four resilient barricades 440 are provided on the outer race 412 of the hub 410 at 90 ° intervals to simulate a deceleration strip with a dense frequency of wheel passage in actual driving. It should be noted that in other alternative embodiments, five or other numbers of the elastic roadblocks 440 may be provided to simulate a deceleration strip with a dense frequency of wheel passing during actual driving.

The first sensor 610 and the second sensor 620 in the control system are in communication connection with the data processing module, so that the data of the rotating speed and the force load of the tire assembly 12 to be tested are subjected to classification analysis and processing, and the radial fatigue test of the wheel radial fatigue testing machine 10 on the tire assembly 12 to be tested when the tire assembly 12 is simulated to pass through a deceleration strip with dense frequency is realized. In this application, the data Processing module is a Processor, and the Processor may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The first sensor 610 is a force sensor and the second sensor 620 is a speed sensor. The communication connection may be implemented by directly or indirectly electrically connecting the elements with each other through one or more communication buses or signal lines to realize data transmission or interaction.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The utility model provides a wheel radial fatigue testing machine for radial fatigue when simulation test tire assembly that awaits measuring passes through dense deceleration strip of frequency, its characterized in that includes:

a frame;

the linear sliding table assembly is connected to the rack, and the tire assembly to be tested is mounted on the linear sliding table assembly and can make linear reciprocating motion along a preset direction;

the first driving device is connected to the rack and used for driving the tire assembly to be tested to do linear reciprocating motion along the preset direction;

the rotating hub assembly is connected to the frame and comprises a rotating hub, the peripheral surface of the rotating hub is provided with an elastic roadblock, and the elastic roadblock can retract towards the center of the rotating hub; and

and the second driving device is connected to the rack and is used for driving the rotating hub to rotate.

2. The wheel radial fatigue testing machine of claim 1, wherein:

the rotating hub assembly further comprises a bearing seat and a rotating hub main shaft, the bearing seat is connected to the rack, and the rotating hub main shaft is rotatably connected to the bearing seat;

the rotating hub comprises a cylindrical outer ring and an inner frame arranged in the outer ring, and the outer ring is connected with the rotating hub main shaft;

the elastic roadblock is connected to the inner frame, and the outer lane is formed with the opening that supplies the elastic roadblock to stretch out or retract the outer lane.

3. The wheel radial fatigue testing machine of claim 2, wherein:

the elastic roadblock comprises a roadblock speed reducer, a guide rod and a spring;

the guide rod is connected to the inner frame, the roadblock speed reducer is movably sleeved on the guide rod, the spring is arranged between the inner frame and the roadblock speed reducer, and the roadblock speed reducer can extend out of or retract into the outer ring through the through hole.

4. The wheel radial fatigue testing machine of claim 3, wherein:

the roadblock speed reducer comprises a fixing part and a speed reducing part;

the two guide rods are connected to the inner frame at intervals, the fixing parts are L-shaped, the two fixing parts are respectively sleeved on the two guide rods, and the two fixing parts are connected to the speed reducing part at intervals;

the speed reduction part can extend out of or retract into the outer ring from the through hole, a movable cavity for the fixed part to move is formed between the speed reduction part and the fixed part, and a fixed cavity for positioning the spring is enclosed among the speed reduction part, the two fixed parts and the inner frame.

5. The wheel radial fatigue testing machine of claim 4, wherein:

the four elastic roadblocks are arranged at intervals of 90 degrees along the peripheral wall of the rotating hub.

6. The wheel radial fatigue testing machine of claim 4, wherein:

the speed reduction part is made of rubber.

7. The wheel radial fatigue testing machine of claim 2, wherein:

the linear sliding table assembly comprises a sliding table bearing seat, a guide rail, a sliding table, a linear bearing and a tire mounting rotating shaft;

the sliding table bearing seat is connected with the frame, the guide rail is connected with the sliding table bearing seat, the sliding table is connected with the guide rail through the linear bearing, the tire mounting rotating shaft is connected with the sliding table, and the tire assembly to be tested is connected with the tire mounting rotating shaft.

8. The wheel radial fatigue testing machine of claim 7, wherein:

the first driving device comprises an oil cylinder and an oil cylinder rod;

the hydro-cylinder connect in the frame, the one end of hydro-cylinder pole connect in the hydro-cylinder, the other end of hydro-cylinder pole can support by in the slip table and follow preset direction loading force load extremely on the slip table.

9. The wheel radial fatigue testing machine of claim 8, wherein:

the second driving device comprises a motor and a belt transmission structure, and the motor drives the rotary hub spindle through the belt transmission structure.

10. The wheel radial fatigue testing machine of claim 9, wherein:

the wheel radial fatigue testing machine further comprises a control system, wherein the control system comprises a first sensor for monitoring the force load loaded by the oil cylinder rod, a second sensor for monitoring the rotating speed of the rotating hub and a data processing module;

the first sensor is connected with the oil cylinder rod, and the second sensor is connected with the rotating hub main shaft;

the first sensor and the second sensor are both in communication connection with the data processing module.