CN113701685A - Method for detecting jumping property of synchronous wheel by adopting synchronous wheel jumping property test board - Google Patents
Method for detecting jumping property of synchronous wheel by adopting synchronous wheel jumping property test board Download PDFInfo
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- CN113701685A CN113701685A CN202110977745.3A CN202110977745A CN113701685A CN 113701685 A CN113701685 A CN 113701685A CN 202110977745 A CN202110977745 A CN 202110977745A CN 113701685 A CN113701685 A CN 113701685A
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- 230000009191 jumping Effects 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000001360 synchronised effect Effects 0.000 title abstract description 17
- 238000001514 detection method Methods 0.000 claims abstract description 92
- 238000006073 displacement reaction Methods 0.000 claims abstract description 74
- 238000003825 pressing Methods 0.000 claims abstract description 13
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000003028 elevating effect Effects 0.000 description 3
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
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Abstract
The invention relates to a method for detecting the jumping property of a synchronous wheel by adopting a synchronous wheel jumping property test platform, which is characterized by comprising the following steps: s1, setting a zero point; s2, pressing a start button, fixing the tested workpiece by the detection tool, descending the first jumping detection device, and moving the second jumping detection device; s3, operating a driving mechanism, and recording an end face run-out value and a V-shaped groove end face run-out value; s4, driving the workpiece to rotate for a circle by the driving mechanism, and stopping running; s5, moving the second bounce detection device, recording the current value by the displacement sensor, and recording the workpiece slot space through PLC operation; s6, taking out the workpiece after the test is finished; the invention has the beneficial effects that: the method for detecting the jumping property of the synchronizing wheel by using the synchronizing wheel jumping property test board is provided, the jumping property of the suction end face and the V-shaped groove of the synchronizing wheel can be automatically detected, compared with the prior art, the detection efficiency is higher, the accuracy is higher, the detection difficulty is greatly reduced, and the proficiency requirement on workers is lower.
Description
Technical Field
The invention relates to the technical field of machinery, in particular to a method for detecting the jumping property of a synchronous wheel by using a synchronous wheel jumping property test bench.
Background
The synchronizing wheel is an important accessory in an electromagnetic clutch. The structure of the synchronizing wheel comprises an annular body with a suction plane at one end, and a synchronizing wheel groove (V-shaped groove) is arranged on the outer wall of the annular body.
In order to improve the smoothness and stability of rotation of the installed synchronizing wheel, the jumping detection of a suction plane and a V-shaped groove of the synchronizing wheel can be generally carried out before the synchronizing wheel is installed. At present, the detection that present detection mode is mostly the percentage table or use corresponding utensil of examining to detect, for example the footpath jump appearance, these detection modes though can satisfy certain detection requirement, nevertheless, foretell both detection modes not only detect loaded down with trivial details and accuracy nature lower, detect the higher production detection requirement that just can't satisfy the enterprise of the degree of difficulty.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method for detecting the jumping property of the synchronizing wheel by using the synchronizing wheel jumping property test platform aiming at the defects of the prior art, which can automatically detect the jumping property of the attraction end surface and the V-shaped groove of the synchronizing wheel.
Adopt synchronizing wheel jumping nature testboard to carry out synchronizing wheel jumping nature detection's method, synchronizing wheel plane jumping testboard, including the frame, but be equipped with the detection frock of clamping synchronizing wheel in the frame, the frame is located and detects the detection frock top and is equipped with the jumping nature of detectable synchronizing wheel terminal surface run-out detection device, the frame is located and detects V type groove terminal surface run-out detection device that jumping nature of frock one side is equipped with detectable synchronizing wheel V type groove terminal surface, the frame is located and detects the jumping nature V type groove face run-out detection device that frock opposite side is equipped with detectable synchronizing wheel V type groove face, the frame is located and is equipped with between V type groove terminal surface run-out detection device and the V type groove face run-out detection device and drive mechanism that can drive synchronizing wheel pivoted, its characterized in that includes following step:
s1, setting a zero point, placing the standard workpiece on a detection tool, and sequentially carrying out 'setting a zero point on the end surface of the standard workpiece', 'setting a zero point on the end surface of a V-shaped groove of the standard workpiece', 'setting a zero point on the surface of a V-shaped groove of the standard workpiece';
s2, pressing a start button, fixing a tested workpiece by a detection tool, descending an end face run-out detection device, wherein the end face run-out detection device comprises an end face run-out test displacement sensor which is in contact with the end face of the workpiece, and simultaneously moving a V-shaped groove end face run-out detection device which comprises a V-shaped groove end face run-out displacement sensor, so that the V-shaped groove end face run-out displacement sensor is in contact with the end face of the V-shaped groove;
s3, the driving mechanism operates to drive the workpiece to rotate, the end face run-out test displacement sensor and the V-shaped groove end face run-out displacement sensor record the maximum value and the minimum value of one circle of rotation of the workpiece, and the end face run-out value and the V-shaped groove end face run-out value are recorded through PLC operation;
s4, driving the workpiece to rotate for a circle by the driving mechanism, stopping running, and separating the driving mechanism from the workpiece;
s5, moving the V-shaped groove surface jumping detection device, wherein the V-shaped groove surface jumping detection device comprises a V-shaped groove surface jumping displacement sensor, the V-shaped groove surface jumping displacement sensor is made to contact the middle of a tested V-shaped groove of a standard workpiece, the displacement sensor records the current value, and the workpiece grooves are recorded through PLC operation;
and S6, loosening the workpiece after the test is finished, and manually taking out the workpiece.
Adopt above-mentioned technical scheme, but the jump nature of actuation terminal surface, V type groove face and the V type groove terminal surface of automated inspection synchronizing wheel, prior art compares, and it is more comprehensive to detect data, and detection efficiency is higher, and the accuracy is higher, and greatly reduced detects the degree of difficulty, and is lower to workman's proficiency requirement, and can once only detect the completion, need not to dismantle many times or change detection instrument and detection anchor clamps.
The method for detecting the skip property of the sync wheel by using the skip property test platform of the sync wheel may further be configured that the step S1 specifically operates as follows:
f1, setting a zero point on the end surface of the standard workpiece, including pressing a displacement cylinder button to make the end surface bounce test displacement sensor contact the tested end surface of the standard workpiece, setting the current position as the zero point through a zero point setting button, wherein the displacement value displayed by the end surface bounce test displacement sensor is displayed by the end surface bounce test displacement sensor;
f2, setting a zero point in the standard workpiece V-shaped groove comprises pressing a displacement cylinder button to enable a V-shaped groove end face jumping displacement sensor to contact the end face of the tested V-shaped groove of the standard workpiece, setting the current position as the zero point through a zero point setting button according to the displacement value displayed by the V-shaped groove end face jumping displacement sensor;
f3, the step of setting the zero point of the standard workpiece V-shaped groove distance comprises the step of pressing a displacement cylinder button to enable a V-shaped groove surface jumping displacement sensor to contact the middle of a tested V-shaped groove of a standard workpiece, and the current position is set to be the zero point through a zero point setting button according to the displacement value displayed by the displacement sensor.
By adopting the technical scheme, the zero point is set before detection, the accuracy of each parameter of the synchronizing wheel is ensured, and the method is suitable for large-batch detection.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic flow chart of an embodiment of the present invention;
FIG. 2 is a schematic view of the overall structure of the jumping test stand of the present invention;
FIG. 3 is a schematic view of a V-shaped groove end face run-out detection device of the run-out test bench of the present invention;
FIG. 4 is a schematic view of a V-shaped groove face jumping detection device of the jumping test bench of the present invention;
FIG. 5 is an exploded view of the detection tool of the jump test stand of the present invention;
FIG. 6 is a schematic view of the drive mechanism of the jump test stand of the present invention;
fig. 7 is a schematic diagram of an end face run-out detection device of the run-out test bench of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 invention.
Adopt synchronizing wheel jumping nature testboard to carry out synchronizing wheel jumping nature detection's method, synchronizing wheel plane jumping testboard, including frame 1, but be equipped with the detection frock 2 of clamping synchronizing wheel in frame 1, frame 1 is located and detects the jumping nature face runout detection device 3 that 2 tops of frock are equipped with the detectable synchronizing wheel terminal surface, frame 1 is located and detects jumping nature V type groove face runout detection device 43 that 2 one side of frock was equipped with detectable synchronizing wheel V type groove terminal surface, frame 1 is located and detects jumping nature V type groove face runout detection device 5 that 2 opposite sides of frock were equipped with the detectable synchronizing wheel V type groove face, frame 1 is located and is equipped with between V type groove face runout detection device 43 and the V type groove face runout detection device 5 and drive mechanism 6 that can drive synchronizing wheel pivoted, including following step:
s1, setting a zero point, placing the standard workpiece on the detection tool 2, and sequentially carrying out 'setting a zero point on the end surface of the standard workpiece', 'setting a zero point on the end surface of the V-shaped groove of the standard workpiece', 'setting a zero point on the surface of the V-shaped groove of the standard workpiece'; specifically, the step of setting the zero point on the end face of the standard workpiece includes pressing a displacement cylinder button to make the end face runout test displacement sensor 31 contact the tested end face of the standard workpiece, setting the current position as the zero point through a zero point setting button according to the displacement value displayed by the end face runout test displacement sensor 31; the step of setting the zero point of the V-shaped groove of the standard workpiece comprises the steps of pressing a displacement cylinder button to enable a V-shaped groove end face jumping displacement sensor 41 to be in contact with the end face of the tested V-shaped groove of the standard workpiece, setting the current position as the zero point through a zero point setting button according to a displacement value displayed by the V-shaped groove end face jumping displacement sensor 41; the step of setting the zero point of the distance between the standard workpiece V-shaped grooves comprises the steps of pressing a displacement cylinder button to enable a V-shaped groove surface jumping displacement sensor 51 to be in contact with the middle of a tested V-shaped groove of the standard workpiece, setting the displacement value displayed by the displacement sensor to be the zero point through a zero point setting button and setting the current position to be the zero point.
S2, pressing a start button, fixing the tested workpiece by the detection tool 2, descending the end face run-out detection device 3, wherein the end face run-out detection device 3 comprises an end face run-out detection displacement sensor 31, the end face run-out detection displacement sensor 31 contacts the end face of the workpiece, meanwhile, the V-shaped groove end face run-out detection device 43 moves, the V-shaped groove end face run-out detection device 43 comprises a V-shaped groove end face run-out displacement sensor 41, and the V-shaped groove end face run-out displacement sensor 41 contacts the end face of the V-shaped groove;
s3, the driving mechanism 6 operates to drive the workpiece to rotate, the end face run-out test displacement sensor 31 and the V-shaped groove end face run-out displacement sensor 41 record the maximum value and the minimum value of one circle of rotation of the workpiece, and the end face run-out value and the V-shaped groove end face run-out value are recorded through PLC operation;
s4, the driving mechanism 6 drives the workpiece to rotate for a circle, the operation is stopped, and the driving mechanism 6 is separated from the workpiece;
s5, the V-shaped groove face jumping detection device 5 moves, the V-shaped groove face jumping detection device 5 comprises a V-shaped groove face jumping displacement sensor 51, the V-shaped groove face jumping displacement sensor 51 is made to contact the middle of a tested V-shaped groove of a standard workpiece, the displacement sensor records the current value, and the workpiece groove space is recorded through PLC operation;
and S6, loosening the workpiece after the test is finished, and manually taking out the workpiece.
Fig. 1 is a flowchart of the method for detecting the skip property of the synchronous wheel.
As shown in fig. 2 to 7 synchronizing wheel plane jump testboard, including frame 1, but be equipped with the detection frock 2 of clamping synchronizing wheel in frame 1, frame 1 is located and detects the jump mobility's of frock 2 top and is equipped with the jump mobility's of detectable synchronizing wheel terminal surface runout detection device 3, frame 1 is located and detects the jumping mobility's of frock 2 one side and is equipped with the V type groove terminal surface runout detection device 4 of detectable synchronizing wheel V type groove terminal surface, frame 1 is located and detects the jumping mobility's of frock 2 opposite side and is equipped with the V type groove terminal surface runout detection device 5 of detectable synchronizing wheel V type groove surface, frame 1 is located and is equipped with between V type groove terminal surface runout detection device 4 and the V type groove terminal surface runout detection device 5 and drive synchronizing wheel pivoted actuating mechanism 6.
The end face runout detection device 3 comprises an end face runout displacement sensor 31 and a first detection cylinder 32 linked with the end face runout displacement sensor 31, the first detection cylinder 32 is linked with a first slide rod 33, the first slide rod 33 is linked with a first slide block assembly 34, the first slide block assembly 34 is linked with a second slide rod 36, and the axes of the second slide rod 36 and the first slide rod 33 are perpendicular to each other. The first sliding block assembly 34 comprises a first sliding block 341 linked with the first sliding rod 33 and a second sliding block 342 in threaded linkage with the second sliding rod 36, the first sliding block 341 and the second sliding block 342 are relatively and fixedly connected, a first limiting torsion piece 343 is arranged on the first sliding block 341, a second limiting torsion piece 344 is arranged on the second sliding block 342, and a first thumb wheel 35 is linked with the end of the second sliding rod 36. Through arranging the first detection cylinder 32, the first slide bar 33, the second slide bar 36 and the first slide block assembly 34 and depending on the connection relationship among the first detection cylinder, the end face runout displacement sensor 31 can be driven to move to the synchronous wheel for detection, and the synchronous wheel can be withdrawn after the detection is finished, so that the end face runout detection of the synchronous wheel can be completed in an auxiliary manner.
V type groove end face runout detection device 4 includes V type groove end face runout displacement sensor 41 and detects cylinder 42 with the second of V type groove end face runout displacement sensor 41 linkage, the second detects cylinder 42 linkage and has elevating system 43, elevating system 43 linkage has reciprocal glide machanism. The lifting mechanism 43 comprises a third sliding rod 431 fixedly connected with the second detection cylinder 42 relatively, and a fourth sliding rod 432 arranged on the reciprocating sliding mechanism relatively and fixedly at two ends respectively, one end of the third sliding rod 431 is in transition fit with a first lifting diagonal draw bar 433, the other end of the first lifting diagonal draw bar 433 is hinged at one end of the fourth sliding rod 432, the other end of the third sliding rod 431 is hinged with a second lifting diagonal draw bar 434, the other end of the second lifting diagonal draw bar 434 is in transition fit with the other end of the fourth sliding rod 432, the first lifting diagonal draw bar 433 and the second lifting diagonal draw bar 434 are in an X shape, the middle parts of the first lifting diagonal draw bar 433 and the second lifting diagonal draw bar 434 are hinged, and the fourth sliding rod 432 is linked with the reciprocating sliding mechanism. The reciprocating sliding mechanism comprises a third sliding block 44 which is relatively fixedly connected with a fourth sliding rod 432, a fifth sliding rod 45 is in threaded linkage with the third sliding block 44, a second thumb wheel is in linkage with the end part of the fifth sliding rod 45, and a third limiting torsion piece 46 is arranged on the third sliding block 44. The matching form of the lifting mechanism 43 and the reciprocating sliding mechanism is utilized to enable the V-shaped groove end face jumping displacement sensor 41 to move to the end face of the V-shaped groove of the synchronizing wheel, so that the V-shaped groove end face jumping displacement sensor 41 can conveniently detect the jumping property of the end face of the V-shaped groove; and elevating system 43 can drive V type groove runout displacement sensor 41 and go up and down along the axis of synchronizing wheel, can detect to each group V type groove terminal surface according to actual demand, and it is more comprehensive, accurate, effective to detect data, and whole V type groove runout detection device structure is simple and easy, and the cost is low to integrate in the frame together with runout detection device, area is little
The V-shaped groove face jumping detection device 5 comprises a V-shaped groove face jumping displacement sensor 51 and a first slide rail assembly 52 which is linked with the V-shaped groove face jumping displacement sensor 51 and distributed along the axial direction of a synchronous wheel, the first slide rail assembly 52 is linked with a third detection air cylinder 53 distributed along the axial direction perpendicular to the axial direction of the synchronous wheel, the third detection air cylinder 53 is linked with a fourth sliding block 54, the fourth sliding block 54 is in threaded linkage with a sixth sliding rod 55, a fourth limiting torsion piece 56 is arranged on the fourth sliding block 54, and a third shifting wheel 57 is linked with the end part of the sixth sliding rod 55.
The detection tool 2 comprises a cylindrical linkage clamp 21 fixedly installed on the frame 1, the end portion of the cylindrical linkage clamp 21 is provided with a connecting column 211 capable of being linked with an inner hole of a synchronizing wheel, a linkage hole 212 penetrates through the middle portion of the cylindrical linkage clamp 21 and is distributed, a conical linkage clamp 22 is embedded in the linkage hole 212, the end portion of the conical linkage clamp 22 is linked with a clamping cylinder 23 installed on the frame 1, and multiple groups of clamping tight-fitting grooves 213 distributed along the axial direction are uniformly distributed on the connecting column 211. The synchronizing wheel is installed on connecting column 211, and clamping cylinder 23 stimulates toper linkage anchor clamps 22 and moves downwards, and connecting column 211 is pushed under the effect of clamping tight fit groove 213 and expands until conflicting with the synchronizing wheel and be connected towards the synchronizing wheel side, realizes spacing to the synchronizing wheel, prevents that the synchronizing wheel from following the axial departure.
The driving mechanism 6 comprises a sliding linkage plate 61 and 2 groups of driving wheels 62 uniformly distributed on the sliding linkage plate 61, the driving wheels 62 are linked with a synchronous belt (not shown in the figure), the sliding linkage plate 61 is linked with a second slide rail assembly, and the sliding linkage plate 61 is linked with a pushing cylinder 63. The sliding linkage plate 61 is provided with a yielding groove 611 on one side facing the detection tool 2. The sliding linkage plate 61 is driven by the second slide rail assembly to move to the side of the synchronizing wheel until the synchronous belt is contacted with the synchronizing wheel, and then the driving wheel 62 rotates, and the synchronous belt drives the synchronizing wheel to rotate.
Claims (2)
1. Adopt synchronizing wheel jumping nature testboard to carry out synchronizing wheel jumping nature detection's method, synchronizing wheel plane jumping testboard, including the frame, but be equipped with the detection frock of clamping synchronizing wheel in the frame, the frame is located and detects the detection frock top and is equipped with the jumping nature of detectable synchronizing wheel terminal surface run-out detection device, the frame is located and detects V type groove terminal surface run-out detection device that jumping nature of frock one side is equipped with detectable synchronizing wheel V type groove terminal surface, the frame is located and detects the jumping nature V type groove face run-out detection device that frock opposite side is equipped with detectable synchronizing wheel V type groove face, the frame is located and is equipped with between V type groove terminal surface run-out detection device and the V type groove face run-out detection device and drive mechanism that can drive synchronizing wheel pivoted, its characterized in that includes following step:
s1, setting a zero point, placing the standard workpiece on a detection tool, and sequentially carrying out 'setting a zero point on the end surface of the standard workpiece', 'setting a zero point on the end surface of a V-shaped groove of the standard workpiece', 'setting a zero point on the surface of a V-shaped groove of the standard workpiece';
s2, pressing a start button, fixing a tested workpiece by a detection tool, descending an end face run-out detection device, wherein the end face run-out detection device comprises an end face run-out test displacement sensor which is in contact with the end face of the workpiece, and simultaneously moving a V-shaped groove end face run-out detection device which comprises a V-shaped groove end face run-out displacement sensor, so that the V-shaped groove end face run-out displacement sensor is in contact with the end face of the V-shaped groove;
s3, the driving mechanism operates to drive the workpiece to rotate, the end face run-out test displacement sensor and the V-shaped groove end face run-out displacement sensor record the maximum value and the minimum value of one circle of rotation of the workpiece, and the end face run-out value and the V-shaped groove end face run-out value are recorded through PLC operation;
s4, driving the workpiece to rotate for a circle by the driving mechanism, stopping running, and separating the driving mechanism from the workpiece;
s5, moving the V-shaped groove surface jumping detection device, wherein the V-shaped groove surface jumping detection device comprises a V-shaped groove surface jumping displacement sensor, the V-shaped groove surface jumping displacement sensor is made to contact the middle of a tested V-shaped groove of a standard workpiece, the displacement sensor records the current value, and the workpiece grooves are recorded through PLC operation;
and S6, loosening the workpiece after the test is finished, and manually taking out the workpiece.
2. The method for detecting the skip property of the sync wheel by using the skip property test platform of the sync wheel as claimed in claim 1, wherein the step S1 specifically comprises the following operations:
f1, setting a zero point on the end surface of the standard workpiece, including pressing a displacement cylinder button to make the end surface bounce test displacement sensor contact the tested end surface of the standard workpiece, setting the current position as the zero point through a zero point setting button, wherein the displacement value displayed by the end surface bounce test displacement sensor is displayed by the end surface bounce test displacement sensor;
f2, setting a zero point in the standard workpiece V-shaped groove comprises pressing a displacement cylinder button to enable a V-shaped groove end face jumping displacement sensor to contact the end face of the tested V-shaped groove of the standard workpiece, setting the current position as the zero point through a zero point setting button according to the displacement value displayed by the V-shaped groove end face jumping displacement sensor;
f3, the step of setting the zero point of the standard workpiece V-shaped groove distance comprises the step of pressing a displacement cylinder button to enable a V-shaped groove surface jumping displacement sensor to contact the middle of a tested V-shaped groove of a standard workpiece, and the current position is set to be the zero point through a zero point setting button according to the displacement value displayed by the displacement sensor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110977745.3A CN113701685A (en) | 2021-08-24 | 2021-08-24 | Method for detecting jumping property of synchronous wheel by adopting synchronous wheel jumping property test board |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110977745.3A CN113701685A (en) | 2021-08-24 | 2021-08-24 | Method for detecting jumping property of synchronous wheel by adopting synchronous wheel jumping property test board |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102589495A (en) * | 2012-02-29 | 2012-07-18 | 昆山佳铭自动化科技有限公司 | Detection device for jumping degree of brake disc |
| CN103776403A (en) * | 2014-01-23 | 2014-05-07 | 日丰机械有限公司 | Automatic belt pulley bounce detection device |
| US20190162630A1 (en) * | 2017-11-30 | 2019-05-30 | Citic Dicastal Co., Ltd | Device for detecting wheel hop |
| CN209069237U (en) * | 2018-12-26 | 2019-07-05 | 重庆英之拓智能***有限公司 | A kind of flywheel comprehensive detection device |
| US20200271444A1 (en) * | 2019-02-27 | 2020-08-27 | Citic Dicastal Co., Ltd. | Verification hub and verification method for motor vehicle hub runout tester |
-
2021
- 2021-08-24 CN CN202110977745.3A patent/CN113701685A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589495A (en) * | 2012-02-29 | 2012-07-18 | 昆山佳铭自动化科技有限公司 | Detection device for jumping degree of brake disc |
| CN103776403A (en) * | 2014-01-23 | 2014-05-07 | 日丰机械有限公司 | Automatic belt pulley bounce detection device |
| US20190162630A1 (en) * | 2017-11-30 | 2019-05-30 | Citic Dicastal Co., Ltd | Device for detecting wheel hop |
| CN209069237U (en) * | 2018-12-26 | 2019-07-05 | 重庆英之拓智能***有限公司 | A kind of flywheel comprehensive detection device |
| US20200271444A1 (en) * | 2019-02-27 | 2020-08-27 | Citic Dicastal Co., Ltd. | Verification hub and verification method for motor vehicle hub runout tester |
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