CN114323700B - Tire testing machine - Google Patents
Tire testing machine Download PDFInfo
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- CN114323700B CN114323700B CN202111580469.3A CN202111580469A CN114323700B CN 114323700 B CN114323700 B CN 114323700B CN 202111580469 A CN202111580469 A CN 202111580469A CN 114323700 B CN114323700 B CN 114323700B
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- 238000012360 testing method Methods 0.000 title claims abstract description 50
- 238000001514 detection method Methods 0.000 claims description 12
- 238000011065 in-situ storage Methods 0.000 claims description 4
- 230000033001 locomotion Effects 0.000 description 13
- 238000005259 measurement Methods 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 9
- 238000009434 installation Methods 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000011056 performance test Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
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- 238000012546 transfer Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
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- 238000000429 assembly Methods 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Abstract
The invention discloses a tire testing machine, wherein a drum part comprises a drum, a station shaft is used for installing a tire to be tested, a loading part is used for driving the station shaft to move towards a direction close to or far away from the drum, a sliding angle functional system is used for realizing the vertical inclination of the station shaft and detecting the inclination angle of the station shaft, and an inclination angle functional system is used for realizing the swinging of the station shaft in the plane of the station shaft and detecting the swinging angle of the station shaft. The tire testing machine can test the durability, the inclination angle and the sliding angle of the tire, is multifunctional and integrated, meets the market demand, and improves the competitiveness of products.
Description
Technical Field
The invention relates to the technical field of tire testing, in particular to a tire durability testing machine with dip angle and slip angle testing functions.
Background
To ensure the safety and comfort of vehicle operation, each batch of tires developed or produced is sampled for performance testing, including mounting the tire to a tire testing machine for performance testing of the finished tire.
In the performance test machine applied to the giant engineering machinery (such as a seven-meter drum engineering machinery tire), the performance test machine generally has only a performance test function of durability, cannot simulate the requirements of working condition tests such as road inclination, sideslip and the like, has a single performance test function, and cannot meet the test requirements of the market on the giant engineering machinery tire.
The above information disclosed in this background section is only for enhancement of understanding of the background section of the application and therefore it may not form the prior art that is already known to those of ordinary skill in the art.
Disclosure of Invention
Aiming at the problems pointed out in the background art, the invention provides a tire testing machine which can carry out durability test on tires under the working conditions of simulating inclination and sideslip of a road surface, has multiple functions, meets market demands and improves product competitiveness.
In order to achieve the aim of the invention, the invention is realized by adopting the following technical scheme:
the present invention provides a tire testing machine, comprising:
a drum unit including a drum;
the station shaft is used for installing a tire to be tested;
the loading part is used for driving the station shaft to move towards or away from the rotary drum;
the sliding angle function system is used for realizing the up-and-down inclination of the station shaft and detecting the inclination angle of the station shaft;
and the inclination angle function system is used for realizing the swinging of the station shaft in the plane where the station shaft is positioned and detecting the swinging angle of the station shaft.
In some embodiments of the present application, the slide angle functional system includes a frame and a slide angle driving assembly, the station shaft is disposed on the frame, the slide angle driving assembly is used for driving the frame to rotate, and a rotation axis of the frame extends along a horizontal direction.
In some embodiments of the present application, the sliding angle driving assembly includes a sliding angle driving part, the sliding angle driving part is rotationally connected with the base of the tire testing machine, and a power output end of the sliding angle driving part is hinged with the frame;
the sliding angle driving part is provided with at least two sets and is respectively arranged at two sides of the frame.
In some embodiments of the present application, the sliding angle functional system further includes a sliding angle detecting device, configured to detect a rotation angle of the frame.
In some embodiments of the present application, the tilt angle functional system includes a tilt angle driving assembly, which is configured to drive the moving end of the station shaft to move back and forth relative to the drum, and drive the rotating end of the station shaft to rotate in situ, where a rotation axis of the rotating end extends in a vertical direction.
In some embodiments of the present application, the tilt driving assembly includes a tilt driving portion, a moving seat and a rotating seat, the moving end of the station shaft is connected with the moving seat, and the rotating end of the station shaft is connected with the rotating seat;
the movable seat is connected with the power output end of the inclination angle driving part and is arranged on the frame in a sliding manner, and the movable seat can move back and forth relative to the rotary drum;
the rotating seat is rotationally arranged on the frame, and the rotating axis of the rotating seat extends along the vertical direction.
In some embodiments of the present application, the tilt driving assembly further includes a tilt detecting device, configured to detect a rotation angle of the rotating base;
the machine frame is provided with a rotating shaft, the rotating shaft can rotate relative to the machine frame, the rotating seat is fixedly connected with the rotating shaft, and the inclination angle detection device is arranged on the rotating shaft.
In some embodiments of the present application, a bearing sleeve is disposed in the rotating seat, and the rotating end of the station shaft rotationally penetrates through the bearing sleeve and has an extending end extending out of the rotating seat, and an axial force sensor for detecting an axial force of the station shaft is disposed on one side of the extending end.
In some embodiments of the present application, an end shell is disposed on the rotating base, the extending end extends into the end shell, an axial force sensor and an axial bearing part are disposed in the end shell, the axial bearing part is connected with the extending end, and the axial bearing part is used for bearing an axial force of the station shaft and transmitting the axial force to the axial force sensor.
In some embodiments of the present application, the drum part further includes a drum driving motor, a power output end of the drum driving motor is connected with a gear, a gear ring is arranged on the drum along a circumferential direction of the drum, and the gear is meshed with an inner circumference of the gear ring.
Compared with the prior art, the invention has the advantages and positive effects that:
the tire testing machine disclosed by the application can realize that the giant engineering machinery tire performs functional tests under working conditions of inclination, sideslip and the like of a road surface through sliding angles (-5 degrees) and inclination angles (-5 degrees), integrates the functions of tire durability test, sliding angle test and inclination angle test, realizes the function of sliding angle detection through rotation of a second frame in a vertical plane, realizes the function of inclination angle detection through movement of one end of a station shaft and rotation of the other end of the station shaft, has a simple and compact whole realization structure, and solves the problem that no pain point of the tire testing machine with comprehensive performance aiming at the giant engineering machinery tire exists in the prior art.
Other features and advantages of the present invention will become apparent upon review of the detailed description of the invention in conjunction with the drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.
FIG. 1 is a schematic view of a tire testing machine according to an embodiment;
FIG. 2 is a schematic diagram of the structure of a first frame and a second frame portion according to an embodiment;
fig. 3 is a schematic structural view of the structure shown in fig. 2 after being cut along a cutting plane P;
FIG. 4 is an enlarged view of portion A of FIG. 3;
fig. 5 is a schematic view of a mounting structure of the tilt angle detecting apparatus according to the embodiment;
FIG. 6 is a schematic view of a station shaft, a mobile station, and a rotary station according to an embodiment;
FIG. 7 is an assembled cross-sectional view between a station shaft and a mobile station according to an embodiment;
FIG. 8 is an assembled cross-sectional view between a station shaft and a swivel base according to one embodiment;
FIG. 9 is an assembled cross-sectional view between a station shaft and a swivel base according to the second embodiment;
FIG. 10 is an assembled cross-sectional view between a station shaft and a swivel base according to the third embodiment;
FIG. 11 is an assembled cross-sectional view of an axial force transmitting portion according to a third embodiment;
FIG. 12 is a schematic structural view of a load coupling device according to an embodiment;
FIG. 13 is an assembled cross-sectional view of a load coupling device according to an embodiment;
fig. 14 is a schematic structural view of a drum portion according to an embodiment.
Reference numerals:
1-a tyre to be tested;
100-frame parts, 110-fixed frames, 120-first frames, 121-first supporting frames, 122-second supporting frames, 130-second frames, 131-first second frame parts, 132-second frame parts, 133-second frame parts, 134-slide ways, 135-rotating shafts, 136-supporting shafts and 137-rotating shafts;
200-station shafts, 210-moving seats, 211-second bearing sleeves, 212-second cylindrical roller bearings, 220-rotating seats, 221-first bearing sleeves, 222-first cylindrical roller bearings, 230-end shells, 231-axial support flanges, 232-end connecting flanges, 240-moving ends of station shafts, 250-rotating ends of station shafts and 251-extending ends;
300-loading part, 310-third hydraulic cylinder, 320-cylinder seat;
400-drum part, 410-drum, 420-drum driving motor, 430-gear and 440-gear ring;
500-sliding angle driving part, 510-first hydraulic cylinder, 520-sliding angle detecting device, 530-first hinge, 540-second hinge;
600-inclination driving part, 610-second hydraulic cylinder, 620-inclination detecting device;
700-loading connecting device, 710-force sensor, 720-force sensor connecting flange, 730-force sensor fixing seat, 740-joint bearing, 750-joint shaft and 760-joint bearing seat;
810-axial bearing parts, 811-axial bearing sleeves, 812-axial bearing flanges, 813-bearings, 814-first flanges, 815-second flanges, 816-spherical flanges, 817-tooth-shaped sleeves, 818-tooth-shaped spherical flanges;
820-axial force sensor, 821-first mount, 822-second mount.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.
[ tire testing machine ]
The present embodiment discloses a tire testing machine that can realize the testing of durability, slip angle, and inclination angle of a tire.
The tire testing machine can be applied to performance testing of giant engineering machinery tires, such as seven-meter drum engineering machinery tires.
Referring to fig. 1 and 2, the tire testing machine mainly includes a loading part 300, a drum part 400, a frame part 100, a station shaft 200, a slip angle driving assembly, an inclination angle driving assembly, and the like. The loading unit 300, the drum unit 400, and the station shaft 200 are arranged in a straight line.
The sliding angle function system is used for realizing the up-and-down inclination of the station shaft 200 and detecting the inclination angle of the station shaft 200;
the dip angle function system is used for realizing the swinging of the station shaft 200 in the plane where the station shaft is located, and detecting the swinging angle of the station shaft 200.
The frame portion 100 includes a fixed frame 110 and a movable frame. The fixed frame 110 corresponds to the base of the whole testing machine, and the movable frame, the loading part 300 and the drum part 400 are all arranged on the fixed frame 110.
The drum part 400 includes a drum 410, the station shaft 200 for mounting the tire 1 to be tested, and the loading part 300 for generating a driving force to bring the station shaft 200 and the drum 410 toward or away from each other.
During the test, the loading part 300 acts, the station shaft 200 and the rotary drum 410 are close to each other, the tyre 1 to be tested on the station shaft 200 and the rotary drum 410 are in a compression and tangency state, the radial loading of the tyre is realized, and the two rotate relatively to finish the related performance test.
The movable rack comprises a first rack 120 and a second rack 130, the second rack 130 is rotatably arranged on the first rack 120, and the second rack 130 is positioned above the first rack 120. The station shaft 20 is disposed on the second frame 130.
A certain gap is provided between the first frame 120 and the second frame 130 to avoid interference of the first frame 120 to the movement of the second frame 130.
As can be seen from the above, the relative movement between the first frame 120 and the drum 410 is realized by the driving of the loading unit 300.
The sliding angle driving assembly is used for driving the second rack 130 to rotate around the supporting shaft 136, and the rotation axis of the second rack 130 extends along the horizontal direction to drive the station shaft 200 and the tire 1 to be tested thereon to synchronously rotate, so as to realize the sliding angle detection function.
The tilt angle driving assembly is used for driving the moving end 240 of the station shaft 200 to move back and forth relative to the rotary drum 410, and driving the rotating end 250 of the station shaft 200 to rotate in situ, and the rotating axis of the rotating end 250 extends along the vertical direction, so as to realize the tilt angle detection function.
The sliding angle is measured through the sliding angle detection device, the inclination angle is measured through the inclination angle detection device, and the angle detection information is uploaded to the control system to realize closed-loop control.
The tire testing machine disclosed by the embodiment can realize the function test of the giant engineering machinery tire under the working conditions of road surface inclination, sideslip and the like through the sliding angle (-5 degrees) and the inclination angle (-5 degrees), integrates the functions of tire durability test, sliding angle test and inclination angle test, realizes the function of sliding angle detection through the rotation of the second frame 130 in the vertical plane, realizes the function of inclination angle detection through the movement of one end of the station shaft 200 and the rotation of the other end, has simple and compact whole realization structure, and solves the problem that the prior art does not have the pain point of the tire testing machine with comprehensive performance for the giant engineering machinery tire.
[ first frame, second frame ]
The rotational connection structure between the first frame 120 and the second frame 130 is specifically as follows:
referring to fig. 2 and 3, the first frame 120 has a first support frame 121 and a second support frame 122 arranged at intervals, a support shaft 136 is disposed between the first support frame 121 and the second support frame 122, the support shaft 136 is perpendicular to the station shaft 200, and the second frame 130 is rotatably disposed on the support shaft 136 to realize rotation in a vertical plane.
As can be seen from the figure, the two sliding angle driving parts are disposed at two sides of the front end (near the drum 410) of the second frame 130, the supporting shaft 136 is disposed at the rear end (far from the drum 410) of the second frame 130, the second frame 130 is supported at three points, and the whole structure is more stable and reliable.
For the specific structure of the second rack 130, in some embodiments of the present application, the second rack 130 is in a C-shaped structure, which includes a first second rack portion 131, a second rack portion 132, and a third second rack portion 133, the first second rack portion 131 is rotatably disposed on the support shaft 136, one end of the station shaft 200 is connected to the second rack portion 132, and the other end of the station shaft 200 is connected to the third second rack portion 133.
Corresponding to the C-shaped structure of the second frame 130, the first frame 120 is also in a C-shaped structure, and the C-shaped frame structure is more stable on one hand, and on the other hand, provides an installation space for the tire 1 to be tested on the station shaft 200.
Referring to fig. 2, the second frame second portion 132 and the second frame third portion 133 are rotatably connected to the first frame 120 through the rotation shaft 135 at ends far from the second frame first portion 131, respectively, to increase rotation connection points, and further improve rotation reliability of the second frame 130.
For the relative movement between the first frame 120 and the drum 410, the loading part 300 may drive the drum part 400 to move, or the loading part 300 may drive the first frame 120 to move.
For testing a giant engineering machine tire, the size of the drum 400 is correspondingly large, and the loading force required for driving the drum 400 to move is larger and is not easy to control accurately, so in this example, the loading part 300 is used for driving the first frame 120 to move.
Specifically, the power output end of the loading portion 300 is connected to the first frame 120, and directly drives the first frame 120 to move in a direction approaching or separating from the drum 410, so as to drive the tire 1 to be tested disposed on the second frame 130 to move in a direction approaching or separating from the drum 410. The power output end of the loading part 300 is specifically connected with the first supporting frame 121 on the first frame 120.
The first frame 120 is slidably disposed on the fixed frame 110, a slide way is disposed on the fixed frame 110, and the first frame 120 is slidably disposed in the slide way.
A position sensor (not shown) is provided on the fixed frame 110 for detecting displacement of the first frame 120.
[ sliding Angle drive Assembly ]
In some embodiments of the present application, referring to fig. 2, the sliding angle driving assembly includes a sliding angle driving part 500, the sliding angle driving part 500 is rotatably connected with the first frame 120, and a power output end of the sliding angle driving part 500 moves in a vertical direction and is hinged with the second frame 130.
In a specific embodiment, the sliding angle driving part 500 is a hydraulic cylinder (denoted as a first hydraulic cylinder 510), the cylinder body of the first hydraulic cylinder 510 is rotatably connected to the first frame 120 through a first hinge 530, and the power output end (i.e. a piston rod) of the first hydraulic cylinder 510 is rotatably connected to the second frame 130 through a second hinge 540. The piston rod of the first hydraulic cylinder 510 extends to rotate the second frame 130 in the vertical plane.
Further, the sliding angle driving assembly has at least two sets of sliding angle driving assemblies, which are respectively arranged at two sides of the second rack 130, that is, two sides of the second rack 130 are respectively provided with a first hydraulic cylinder 510.
When the second stand 130 is driven to rotate, the piston rod of the first hydraulic cylinder 510 on one side moves upwards, and the piston rod of the first hydraulic cylinder 510 on the other side moves downwards, so that both sides of the second stand 130 can be effectively driven and supported in a rotating way, and the rotating reliability of the second stand 130 is improved.
Referring to fig. 3 and 4, the second frame 130 is provided with a slip angle detecting device 520 for detecting a rotation angle of the second frame 130. In this embodiment, the sliding angle detecting device 520 is a sliding angle displacement sensor, and when the second frame 130 rotates, the sliding angle displacement sensor is driven to rotate synchronously, and the sliding angle is measured by gravity, and the sliding angle information is uploaded to the control system to realize closed-loop control.
[ Tilt drive Assembly ]
The tilt driving assembly includes a tilt driving part 600, a moving base 210, and a rotating base 220.
Referring to fig. 6, one end of the station shaft 200 is a moving end 240, the other end is a rotating end 250, the moving end 240 of the station shaft is rotatably connected with the moving base 210, and the rotating end 250 of the station shaft is rotatably connected with the rotating base 220.
The movable seat 210 is connected to the power output end of the tilt driving part 600 and is slidably disposed on the second frame 130 (specifically, the second frame two part 132), and the movable seat 210 can move in a direction approaching or separating from the drum 410, that is, the movable seat 210 moves back and forth relative to the drum 410, and drives the station shaft to rotate in situ, and the rotation axis of the rotation end extends in the vertical direction.
The rotating base 220 is rotatably disposed on the second frame 130 (specifically, the third portion 133 of the second frame), and the rotating base 220 can rotate in a plane formed by the front-back movement of the rotating end 250 and the moving end 240.
The inclination driving part 600 is specifically a hydraulic cylinder (denoted as a second hydraulic cylinder) 610, a cavity (not denoted) is installed on the second frame 130, a cylinder body of the second hydraulic cylinder 610 is fixedly arranged in the installation cavity, and a piston rod of the second hydraulic cylinder 610 directly drives the moving seat 210 to move.
The second frame 132 is provided with a slide 134, and the moving seat 210 is slidably disposed in the slide 134, so as to perform the functions of installation and movement guiding on the moving seat 210.
The moving seat 210 and the rotating seat 220 are structured, so that the installation of the station shaft 200 is realized, the functions of moving one end of the working shaft 200 and rotating the other end to perform the inclination angle test are realized, and the structure is relatively simple and the cost is low.
For the rotation structure of the rotation seat 220 in the horizontal plane, in some embodiments of the present application, referring to fig. 8, the third portion 133 of the second frame is provided with a rotation shaft 137, and the rotation shaft 137 can rotate relative to the second frame 130, and the rotation seat 220 is fixedly connected with the rotation shaft 137.
When the moving seat 210 drives the moving end 240 of the station shaft to move toward or away from the drum 410, the rotating end 250 of the station shaft can drive the rotating seat 220 and the rotating shaft 137 connected with the rotating seat 220 to rotate, so as to realize the tilt angle function, because the distance between the rotating seat 220 and the drum 410 is unchanged.
Referring to fig. 5 again, an inclination angle detecting device 620 is disposed on the rotating shaft 137, and is used for detecting the rotation angle of the rotating seat 220, in this embodiment, the inclination angle detecting device 620 is an inclination angle displacement sensor, and is located on the rotation axis of the rotating shaft 137, and when the rotating seat 220 drives the rotating shaft 137 to rotate, the inclination angle displacement sensor can measure the inclination angle information and upload the inclination angle information to the control system, so as to realize closed-loop control.
[ Assembly Structure of moving end and rotating end of station shaft ]
For the rotational connection structure between the moving end 240 of the station shaft and the moving seat 210, in some embodiments of the present application, referring to fig. 7, a second bearing sleeve 211 is disposed in the moving seat 210, the moving end 240 of the station shaft rotatably penetrates through the second bearing sleeve 211 and has an extending end 251 extending out of the rotating seat 220, and an axial force sensor 820 for detecting an axial force of the station shaft 200 is disposed at one side of the extending end 251. A second cylindrical roller bearing 212 is provided between the second bearing housing 211 and the moving end 240.
For the rotational connection structure between the rotating end 250 of the station shaft and the rotating seat 220, in some embodiments of the present application, referring to fig. 8, a first bearing sleeve 221 is disposed in the rotating seat 220, the rotating end 250 of the station shaft rotationally penetrates through the first bearing sleeve 221, and a first cylindrical roller bearing 222 is disposed between the first bearing sleeve 221 and the rotating end 250.
The cylindrical roller bearing can effectively reduce the adverse effect of friction force and improve the measurement accuracy.
[ motion Compensation Structure of station shaft ]
The tire in the test generates lateral forces due to the inclination and slip angle, which force creates axial forces on the station shaft. The force is a key parameter in the tire test, the force provides strength requirements for the axial structure, the accurate measurement of the axial force has a feedback protection function for the axial structure, and the accurate measurement of the axial force needs to avoid various friction influences as much as possible, so that the accuracy of data is ensured.
Based on this, this embodiment also provides a compensating motion structure of the station shaft, which can compensate for the misalignment of the installation of the station shaft 200 and the axial force sensor 820 and accurately measure the axial force of the station shaft 200 while satisfying the functions of measuring the inclination angle and the slip angle of the station shaft.
Specifically, referring to fig. 8, an end housing 230 is fixedly disposed on the outer side of the rotating base 220, and an installation space is defined between the end housing 230 and the side wall of the rotating base 220. The rotating end 250 of the station shaft rotatably extends through the rotary base 220 and has an extended end 251 extending outwardly from the rotary base 220, the extended end 251 being located within the end housing 230.
An axial force sensor 820 and an axial bearing part 810 are further arranged in the end shell 230, the axial bearing part 810 is connected with the extending end 251, and the axial bearing part 810 is used for bearing the axial force of the station shaft 200 and transmitting the axial force to the axial force sensor 820 so as to realize accurate measurement of the axial force.
For the specific structure of the end shell 230, in some embodiments of the present application, the end shell 230 includes an axial support flange 231 and an end connection flange 232, one end of the axial support flange 231 is fixedly connected with the rotating base 220, the other end is fixedly connected with the end connection flange 232, an axial force sensor 820 is fixedly arranged on the end connection flange 232, and the axial force sensor 820 is opposite to the extending end 251 of the station shaft.
For the specific construction of the axial bearing 810, it includes, in some embodiments of the present application, an axial bearing sleeve 811, an axial bearing flange 812, and an axial force transfer portion.
The axial bearing sleeve 811 is fixedly arranged in the end shell 230, specifically, the axial bearing sleeve 811 is fixedly arranged on the axial support flange 231, the axial bearing flange 812 is fixedly arranged at the end part of the axial support flange 231, and the extending end 251 of the station shaft extends into the space surrounded by the axial bearing sleeve 811 and the axial bearing flange 812.
A step structure is formed between the extending end 251 of the station shaft and the rotating end 250 of the station shaft, a bearing 813 is arranged between the extending end 251 and the axial bearing sleeve 811, one end of the bearing 813 abuts against the step structure, and the other end is fixedly arranged on the extending end 251 by a locking nut.
The bearing 813 is a spherical thrust roller bearing and can bear a large axial force.
The axial force transmission part acts between the axial load flange 812 and the axial force sensor 820, when the tire generates axial force, the axial force is mainly borne by the bearing 813, the bearing 813 transmits the axial force to the axial load sleeve 811 and the axial load flange 812, and then the axial force transmission part transmits the axial force to the axial force sensor 820, so that the real-time measurement of the axial force is realized.
The axial force bearing part consisting of the axial bearing sleeve 811, the axial bearing flange 812 and the axial force transmission part can bear larger axial force, and the force is transmitted through the bearing, so that the influence of friction force is reduced, and the measurement accuracy of the axial force is improved.
While three specific embodiments are presented herein for the specific construction of the axial force transmitting portion.
The first type of axial force transmission portion is referred to in fig. 8.
The axial force transmission part comprises a first flange 814 and a second flange 815, the first flange 814 and the second flange 815 are fixedly connected through bolts, the first flange 814 is arranged between the axial bearing flange 812 and the extending end 251, and the second flange 815 is arranged between the axial bearing flange 812 and the axial force sensor 820 and is abutted against the axial force sensor 820. Gaps are respectively arranged between the first flange 814 and the axial bearing flange 812 and between the second flange 815 and the axial bearing flange 812.
When the tire generates a leftward axial force (in the direction of illustration), the tire drives the station shaft 200 to generate a leftward movement trend, the cylindrical roller bearings on the station shaft moving end 240 and the rotating end 250 can move left and right freely, the roller resistance is small, the leftward acting force of the tire is mainly borne by the bearing 813, and acts on the second flange 815 through the axial bearing sleeve 811 and the axial bearing flange 812, and then acts on the axial force sensor 820, so that the measurement of the axial force is realized.
When the tire generates rightward axial force, the tire drives the station shaft 200 to generate rightward movement trend, and the force is mainly borne by the bearing 813, acts on the first flange 814 through the axial bearing sleeve 811 and the axial bearing flange 812, and then acts on the axial force sensor 820 through the second flange 815, so as to realize measurement of the axial force.
Radial and flexibility compensation is achieved by the gaps between the first flange 814, the second flange 815, and the axial bearing flange 812.
The second type of axial force transmission portion is referred to in fig. 9.
The axial force transfer portion includes a first flange 814, a second flange 815, and a spherical flange 816.
The first flange 814 and the second flange 815 are fixedly connected through bolts, and the first flange 814 is disposed between the axial bearing flange 812 and the protruding end 251, and the second flange 815 is disposed between the axial bearing flange 812 and the axial force sensor 820. Gaps are respectively arranged between the first flange 814 and the axial bearing flange 812 and between the second flange 815 and the axial bearing flange 812.
The spherical flange 818 is rotatably disposed in the first flange 814 and the second flange 815, and one end of the spherical flange 816 abuts against the axial force sensor 820.
In order to improve the structural reliability, further, one end of the spherical flange 816 is fixedly provided with a first mounting seat 821 by a bolt, and the first mounting seat 821 abuts against the axial force sensor 820.
When the tire generates a leftward axial force (in the direction of illustration), the tire drives the station shaft 200 to generate a leftward movement trend, the cylindrical roller bearings on the station shaft moving end 240 and the rotating end 250 can move left and right freely, the roller resistance is small, the leftward acting force of the tire is mainly borne by the bearing 813, acts on the second flange 815 through the axial bearing sleeve 811 and the axial bearing flange 812, and then acts on the axial force sensor 820 through the spherical flange 816 and the first mounting seat 821, so that the axial force measurement is realized.
When the tire generates rightward axial force, the tire drives the station shaft 200 to generate rightward movement trend, the force is mainly borne by the bearing 813, acts on the first flange 814 through the axial bearing sleeve 811 and the axial bearing flange 812, and then acts on the axial force sensor 820 through the second flange 815, the spherical flange 816 and the first mounting seat 821, so as to realize measurement of the axial force.
By the arrangement of the spherical flange 816, radial compensation is achieved by the clearances between the first flange 814, the second flange 815 and the axial bearing flange 812, while flexural compensation is achieved by the spherical surfaces between the first flange 814, the second flange 815 and the spherical flange 816.
A third axial force transmission portion, refer to fig. 10 to 12.
The axial force transfer portion includes a toothed sleeve 817, a toothed spherical flange 818, and a second mount 822.
The tooth-shaped sleeve 817 is fixedly arranged on the axial bearing flange 812 through bolts, the tooth-shaped spherical flange 818 is arranged in a space surrounded by the tooth-shaped sleeve 817 and the axial bearing flange 812, the tooth-shaped structure of the tooth-shaped spherical flange 818 extends out from a circumferential gap of the tooth-shaped sleeve 817 and is fixedly connected with the second mounting seat 822 through bolts, and one side of the second mounting seat 822 is abutted against the axial force sensor 820.
The transmission of the axial force is substantially the same as the two above constructions and will not be described in detail. The contact between the toothed spherical flange 818 and the toothed sleeve 817 and the axial bearing flange 812 is spherical contact for flexibility compensation in the rotation process of the station shaft 200, and radial compensation is realized through radial clearance between the toothed spherical flange 818 and the toothed sleeve 817.
[ Loading portion ]
Referring to fig. 1, the loading part 300 includes a cylinder block 320 and a hydraulic cylinder (denoted as a third hydraulic cylinder 310), the cylinder block 320 is fixedly disposed on the fixed frame 110, a cylinder body of the third hydraulic cylinder 310 is fixedly disposed on the cylinder block 320, and a piston rod (i.e., a power output end of the loading part) of the third hydraulic cylinder 310 is connected to a first support frame 121 on the first frame 120 to drive the first frame 120 to move in a direction approaching or separating from the drum 410.
The first support frame 121 is connected to the power output end of the loading unit 300 through the loading connection device 700.
Referring to fig. 12 and 13, the loading connection device 700 includes a force sensor 710, one side of the force sensor 710 is fixedly connected with a power output end of the loading unit 300 through a connection flange 720, a force sensor fixing seat 730 is fixedly arranged on the other side of the force sensor 710, the force sensor fixing seat 730 is connected with a joint bearing seat 760 through a joint shaft 750 and a joint bearing 740, the joint bearing seat 760 is fixedly connected with the first support frame 121, and connection of the loading unit 300 and the first frame 120 is achieved.
The joint bearing seat 760 and the force sensor fixing seat 730 are directly connected with the joint bearing 740 through the joint shaft 750, the joint bearing 740 can perform angle compensation in the horizontal and vertical directions, the non-parallelism error between the loading force direction and the sliding direction of the first rack 120 is effectively eliminated, and the service life of the device is prolonged.
The loading force is transmitted through the spherical surface, the stress is uniform, the pressure on the spherical surface is small, the stress concentration is small, the crushing is not easy, and the service life is prolonged.
Knuckle bearing 740 may be an oilless knuckle bearing or a rolling knuckle bearing.
[ Drum section ]
Referring to fig. 14, the drum part 400 further includes a drum driving motor 420, the drum driving motor 420 is fixedly disposed on the fixed frame 110, a power output end of the drum driving motor 420 is connected with a gear 430, a gear ring 440 is disposed on the drum 410 along a circumferential direction thereof, and the gear 430 is engaged with an inner circumference of the gear ring 440.
The reduction transmission device formed by the drum driving motor 420, the gear 430 and the gear ring 440 has compact structure, low cost and high modularization degree.
In the description of the above embodiments, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (7)
1. A tire testing machine comprising:
a drum unit including a drum;
the station shaft is used for installing a tire to be tested;
the loading part is used for driving the station shaft to move towards or away from the rotary drum;
the testing machine is characterized by further comprising:
the sliding angle function system is used for realizing the up-and-down inclination of the station shaft and detecting the inclination angle of the station shaft;
the inclination angle function system is used for realizing the swing of the station shaft in the plane where the station shaft is positioned and detecting the swing angle of the station shaft;
the sliding angle functional system comprises a rack and a sliding angle driving assembly, the station is arranged on the rack in a shaft mode, the sliding angle driving assembly is used for driving the rack to rotate, and the rotating axis of the rack extends along the horizontal direction;
the sliding angle driving assembly comprises a sliding angle driving part, the sliding angle driving part is rotationally connected with the base of the tire testing machine, and the power output end of the sliding angle driving part is hinged with the frame;
the dip angle functional system comprises a dip angle driving assembly, a dip angle adjusting assembly and a dip angle adjusting assembly, wherein the dip angle driving assembly is used for driving the moving end of the station shaft to move back and forth relative to the rotary drum and driving the rotating end of the station shaft to rotate in situ, and the rotating axis of the rotating end extends along the vertical direction;
the dip angle driving assembly comprises a dip angle driving part, a movable seat and a rotary seat, wherein the movable end of the station shaft is connected with the movable seat, and the rotary end of the station shaft is connected with the rotary seat;
the movable seat is connected with the power output end of the inclination angle driving part and is arranged on the frame in a sliding manner, and the movable seat can move back and forth relative to the rotary drum;
the rotating seat is rotationally arranged on the frame, and the rotating axis of the rotating seat extends along the vertical direction.
2. The tire testing machine of claim 1, wherein,
the sliding angle driving part is provided with at least two sets and is respectively arranged at two sides of the frame.
3. The tire testing machine of claim 1, wherein,
the sliding angle functional system further comprises a sliding angle detection device used for detecting the rotation angle of the frame.
4. The tire testing machine of claim 1, wherein,
the inclination driving assembly further comprises an inclination detecting device, and the inclination detecting device is used for detecting the rotation angle of the rotating seat;
the machine frame is provided with a rotating shaft, the rotating shaft can rotate relative to the machine frame, the rotating seat is fixedly connected with the rotating shaft, and the inclination angle detection device is arranged on the rotating shaft.
5. The tire testing machine of claim 1, wherein,
the rotary seat is internally provided with a bearing sleeve, the rotating end of the station shaft rotationally penetrates through the bearing sleeve and is provided with an extending end extending outwards from the rotary seat, and one side of the extending end is provided with an axial force sensor for detecting the axial force of the station shaft.
6. The tire testing machine of claim 5, wherein,
the rotary seat is provided with an end shell, the extending end extends into the end shell, an axial force sensor and an axial bearing part are arranged in the end shell, the axial bearing part is connected with the extending end, and the axial bearing part is used for bearing the axial force of the station shaft and transmitting the axial force to the axial force sensor.
7. The tire testing machine of any one of claims 1 to 6, wherein,
the rotary drum part also comprises a rotary drum driving motor, the power output end of the rotary drum driving motor is connected with a gear, a gear ring is arranged on the rotary drum along the circumferential direction of the rotary drum, and the gear is meshed with the inner circumference of the gear ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111580469.3A CN114323700B (en) | 2021-12-22 | 2021-12-22 | Tire testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111580469.3A CN114323700B (en) | 2021-12-22 | 2021-12-22 | Tire testing machine |
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| Publication Number | Publication Date |
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| CN114323700A CN114323700A (en) | 2022-04-12 |
| CN114323700B true CN114323700B (en) | 2024-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111580469.3A Active CN114323700B (en) | 2021-12-22 | 2021-12-22 | Tire testing machine |
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| CN (1) | CN114323700B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7934421B2 (en) * | 2008-08-05 | 2011-05-03 | Link Engineering Company | Biaxial wheel test assembly |
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| JP2007121160A (en) * | 2005-10-28 | 2007-05-17 | Kobe Steel Ltd | Tire-running test machine |
| CN102401743A (en) * | 2010-09-16 | 2012-04-04 | 软控股份有限公司 | Sliding angle detection device and detection method for tire durablity |
| CN102401744A (en) * | 2010-09-16 | 2012-04-04 | 软控股份有限公司 | Inclination detection device and method for tire durability |
| CN102323069A (en) * | 2011-08-31 | 2012-01-18 | 吉林大学 | Arc-shaped guide rail lateral-deviation side-tipping high-speed tire tester |
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| CN114323700A (en) | 2022-04-12 |
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