CN102879190A - Verifying device and verifying method for abnormal sound of automobile shaft sleeves - Google Patents
Verifying device and verifying method for abnormal sound of automobile shaft sleeves Download PDFInfo
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- CN102879190A CN102879190A CN2012103694119A CN201210369411A CN102879190A CN 102879190 A CN102879190 A CN 102879190A CN 2012103694119 A CN2012103694119 A CN 2012103694119A CN 201210369411 A CN201210369411 A CN 201210369411A CN 102879190 A CN102879190 A CN 102879190A
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- automobile axle
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Abstract
The invention provides a verifying device and a verifying method for abnormal sound of automobile shaft sleeves, and relates to the technical field of detection for automobile parts. Problems that accuracy is low, cost is high, and abnormal sound of an automobile shaft sleeve cannot be pertinently eliminated in a process for detecting the abnormal sound of the automobile shaft sleeve by a pavement test are solved. The verifying device only comprises a rocker assembly, support blocks and a base, accordingly, is simple in structure, is portable, and can be placed in environments without environmental noise or noise of automobiles to verify the abnormal sound of the automobile shaft sleeves, and accuracy of the verifying device is improved. In addition, assembly of an integral automobile for a pavement test is omitted, so that cost is saved. Besides, as the rocker assembly is fixed onto a body of an automobile shaft sleeve and can drive the body to move along, a movement condition of the automobile shaft sleeve when the automobile runs on a pavement can be simulated, reasons causing abnormal sound of the automobile shaft sleeve can be found out, and the problem of the abnormal sound of the automobile shaft sleeve can be pertinently solved. The verifying device and the verifying method are mainly used for detecting various automobile shaft sleeves.
Description
Technical field
The present invention relates to auto parts machinery detection technique field, relate in particular to automobile axle sleeve abnormal sound demo plant and verification method.
Background technology
The automobile axle sleeve is fixed in the propons, back axle of automobile chassis, is used for the connection between the automobile parts, the friction and wear in the time of can reducing running car between the parts.
Fig. 1 shows the structure of automobile axle sleeve, and this automobile axle sleeve comprises: body 11, end plate 12; Body 11 is comprised of the first rubber assembly 111 and the second rubber assembly 112, and 111 interference of the first rubber assembly are socketed on the second rubber assembly 112; A centre of surface of end plate 12 is installed with minor axis 122, and another centre of surface is installed with web joint 123, and web joint 123 is provided with through hole 13, is used for being fixedly connected with the parts of automobile; Minor axis 122 is connected with 112 interference of the second rubber assembly, can be so that 112 mutual compressions in adjacent surface of end plate 12 and the second rubber assembly are seamless.
When running car passes through the distortion road surface, abnormal sound can appear in the propons of automobile chassis or back axle, in order to determine whether this abnormal sound is that the automobile axle sleeve sends, the technician need to assemble first car load, then the car load of this assembling carried out pavement test, rely on again experience to search the automobile axle sleeve that sends abnormal sound by the mode of listening sound.After determining which automobile axle sleeve sends abnormal sound, by in this automobile axle sleeve, adding lubricant, solve automobile axle sleeve abnormal sound problem.
When stating in the use automobile axle sleeve abnormal sound verification method because factors such as the neighbourhood noise that may exist, the noises of automobile own, may the influence technique personnel to the judgement of abnormal sound, the accuracy of checking is reduced.And because the assembling car load needs a large amount of manpowers, and car load is carried out pavement test need to spend the more time, so that the checking cost is higher; In addition, can only determine that by the mode of listening sound which automobile axle sleeve sends abnormal sound, and can not find out the reason of automobile axle sleeve abnormal sound, therefore can't solve targetedly automobile axle sleeve abnormal sound problem according to the abnormal sound reason.
Summary of the invention
Embodiments of the invention provide a kind of automobile axle sleeve abnormal sound demo plant and verification method, have solved detecting in the process of automobile axle sleeve abnormal sound by pavement test, and accuracy is low, cost is higher and can't solve pointedly the problem of automobile axle sleeve abnormal sound.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of automobile axle sleeve abnormal sound demo plant comprises: rocking bar assembly, back-up block and base; Described back-up block one end is fixed on the described base, and the other end is fixedly connected with the web joint of described automobile axle sleeve, described automobile axle sleeve is supported in described base top; Described rocking bar assembly suit is fixed on the body of described automobile axle sleeve, moves together so that described rocking bar assembly drives described body.
Preferably, described rocking bar assembly is provided with tapped through hole and hold-down bolt, the external thread of described hold-down bolt and the screw-internal thread fit of described tapped through hole of passing described tapped through hole.
Further, described rocking bar assembly outside surface is provided with rocking bar.
Preferably, also comprise set bolt, described set bolt passes the through hole on the described web joint, and the described back-up block other end is fixedly connected with described web joint.
A kind of automobile axle sleeve abnormal sound verification method, use above-mentioned automobile axle sleeve abnormal sound demo plant, comprise: the back-up block other end that the web joint of automobile axle sleeve to be measured is fixedly connected on described automobile axle sleeve abnormal sound demo plant, and the rocking bar assembly of described automobile axle sleeve abnormal sound demo plant suit is fixed on the body of described automobile axle sleeve to be measured, form the checking frock; Described checking frock is placed the laboratory; The end plate of described automobile axle sleeve to be measured is separated with the second rubber assembly, so that described body when motion, described the second rubber assembly does not contact with described end plate; Adjust temperature to the first temperature in the described laboratory, shake described rocking bar assembly; When described automobile axle sleeve to be measured sends abnormal sound, determine that then described body displacement friction sends one of reason of abnormal sound for described automobile axle sleeve to be measured.
Further, automobile axle sleeve abnormal sound verification method also comprises: adjust temperature in the described laboratory to the second temperature that is different from described the first temperature, shake described rocking bar assembly; When described automobile axle sleeve to be measured does not send abnormal sound, determine that then the temperature in the described laboratory is that described automobile axle sleeve to be measured sends one of reason of abnormal sound.
Preferably, when described automobile axle sleeve to be measured did not send abnormal sound, described automobile axle sleeve abnormal sound verification method also comprised: described end plate and described the second rubber assembly are compressed; Adjust temperature in the described laboratory to described the first temperature, shake described rocking bar assembly; When described automobile axle sleeve to be measured sends abnormal sound, determine that then friction of motion is that described automobile axle sleeve to be measured sends one of reason of abnormal sound between described body and the described end plate.
Further, automobile axle sleeve abnormal sound verification method also comprises: adjust temperature in the described laboratory to described the second temperature, shake described rocking bar assembly; When described automobile axle sleeve to be measured does not send abnormal sound, determine that then the temperature in the described laboratory is that described automobile axle sleeve to be measured sends one of reason of abnormal sound.
Preferably, temperature in the described laboratory of described adjustment is to described the first temperature, shake between two sub-steps in the step of described rocking bar assembly, also comprise: described checking frock is left standstill the fixed time, so that the temperature of described automobile axle sleeve to be measured equals described the first temperature.
And further, temperature in the described laboratory of described adjustment is to the second temperature that is different from described the first temperature, shake between two sub-steps in the step of described rocking bar assembly, also comprise: described checking frock is left standstill the fixed time, so that the temperature of described automobile axle sleeve to be measured equals described the second temperature.
In the automobile axle sleeve abnormal sound demo plant and verification method that the embodiment of the invention provides, owing to include only rocking bar assembly, back-up block and base, simple in structure, light, device can be placed do not exist the environment of neighbourhood noise and the noise of automobile own to verify, improved accuracy; Because not needing to assemble car load carries out pavement test, therefore saved cost; In addition owing to rocking bar assembly suit is fixed on the body of described automobile axle sleeve, and can drive body and move together, thereby can imitate the moving situation of automobile automobile axle sleeve when road traveling, find out the reason of automobile axle sleeve abnormal sound, and then can solve pointedly automobile axle sleeve abnormal sound problem.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of automobile axle sleeve in the prior art;
The structural representation of the automobile axle sleeve abnormal sound demo plant that automobile axle sleeve to be measured is installed that Fig. 2 provides for the embodiment of the invention;
The process flow diagram of a kind of automobile axle sleeve abnormal sound verification method that Fig. 3 provides for the embodiment of the invention;
The process flow diagram of the another kind of automobile axle sleeve abnormal sound verification method that Fig. 4 provides for the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work belongs to the scope of protection of the invention.
Embodiment 1
Present embodiment provides a kind of automobile axle sleeve abnormal sound demo plant, as shown in Figure 2, comprising: rocking bar assembly 21, back-up block 22 and base 23; Back-up block 22 1 ends are fixed on the base 23, and the other end is fixedly connected with the web joint 123 of automobile axle sleeve, the automobile axle sleeve is supported in base 23 tops; Rocking bar assembly 21 suits are fixed on the body 11 of automobile axle sleeve, move together so that rocking bar assembly 21 drives body 11.
The below is described in detail the principle of work of above-mentioned automobile axle sleeve abnormal sound demo plant.
Generally speaking, the reason that causes the automobile axle sleeve to produce abnormal sound mainly contains three kinds: the first, and environment temperature is on the impact of automobile axle sleeve; The second, the fricative impact of body 11 displacements of automobile axle sleeve; The third, the impact that friction of motion produces between the body 11 of automobile axle sleeve and the end plate 12.
State in the use automobile axle sleeve abnormal sound demo plant automobile shafts cover to be measured is carried out abnormal sound when checking, at first the end plate 12 with automobile axle sleeve to be measured separates with the second rubber assembly 112, so that during body 11 motion, the second rubber assembly 112 does not contact with end plate 12, again the web joint 123 of automobile axle sleeve to be measured is fixedly connected on back-up block 22 other ends of automobile axle sleeve abnormal sound demo plant, rocking bar assembly 21 suits of automobile axle sleeve abnormal sound demo plant are fixed on the body 11 of automobile axle sleeve to be measured, be assembled into the checking frock, the checking frock that will assemble again places the laboratory; Then temperature to the first temperature in the regulation experiment chamber is shaken rocking bar assembly 21 by operating personnel at last, moves together with the body 11 that drives automobile axle sleeve to be measured.
In temperature constant, body 11 and end plate 12 friction free situations, when automobile axle sleeve to be measured sends abnormal sound, determine that then the friction of body 11 displacements sends one of reason of abnormal sound for automobile axle sleeve to be measured; Temperature in subsequently can the regulation experiment chamber is to the second temperature that is different from described the first temperature, then shake rocking bar assembly 21 by operating personnel, move together with the body 11 that drives automobile axle sleeve to be measured, in temperature constant, body 11 and the end plate 12 friction free situations, when automobile axle sleeve to be measured does not send abnormal sound, determine that then the temperature in the described laboratory is that described automobile axle sleeve to be measured sends one of reason of abnormal sound.
Temperature in above-mentioned laboratory is in the situation of the first temperature, when shaking rocking bar assembly 21 by operating personnel, if automobile axle sleeve to be measured does not send abnormal sound, determine that then the friction of body 11 displacements is not the reason that automobile axle sleeve to be measured sends abnormal sound, next end plate 12 and second rubber assembly 112 of automobile axle sleeve can be compressed, so that during body 11 motion, have friction of motion between the second rubber assembly 112 and the end plate 12, will ressemble again rear checking frock and place the laboratory; Temperature to the first temperature in the regulation experiment chamber is shaken rocking bar assembly 21 by operating personnel at last, moves together with the body 11 that drives automobile axle sleeve to be measured.
In temperature constant, end plate 12 and the second rubber assembly 112 exist in the situation of friction of motion, when automobile axle sleeve to be measured sends abnormal sound, determine that then friction of motion is that automobile axle sleeve to be measured sends one of reason of abnormal sound between body 11 and the end plate 12; Temperature in the regulation experiment chamber is to the second temperature that is different from described the first temperature again, then shake rocking bar assembly 21 by operating personnel, move together with the body 11 that drives automobile axle sleeve to be measured, temperature constant, end plate 12 and the second rubber assembly 112 exist in the situation of friction of motion, when automobile axle sleeve to be measured does not send abnormal sound, determine that then the temperature in the laboratory is that automobile axle sleeve to be measured sends one of reason of abnormal sound.
In the automobile axle sleeve abnormal sound demo plant that present embodiment provides, owing to include only rocking bar assembly, back-up block and base, simple in structure, light, device can be placed do not exist the environment of neighbourhood noise and the noise of automobile own to verify, improved accuracy; Because not needing to assemble car load carries out pavement test, therefore saved cost; In addition owing to rocking bar assembly suit is fixed on the body of described automobile axle sleeve, and can drive body and move together, thereby can imitate the moving situation of automobile automobile axle sleeve when road traveling, find out the reason of automobile axle sleeve abnormal sound, and then can solve pointedly automobile axle sleeve abnormal sound problem.
In the automobile axle sleeve abnormal sound demo plant that above-described embodiment is described, hold-down bolt 24, the external thread of described hold-down bolt 24 and the screw-internal thread fit of described tapped through hole that can be provided with tapped through hole on the rocking bar assembly 21 and pass described tapped through hole.Can change rocking bar assembly 21 and be sleeved on elasticity on the body 11 by twisting hold-down bolt 24, make things convenient for fixing on body 11 of rocking bar assembly 21.
In the automobile axle sleeve abnormal sound demo plant that above-described embodiment is described, can be provided with rocking bar 25 on rocking bar assembly 21 outside surfaces.Operating personnel can finish shaking of rocking bar assembly, simple operation by manual rocking bar 25.
In the automobile axle sleeve abnormal sound demo plant that above-described embodiment is described, can also comprise set bolt 26, set bolt 26 passes the through hole 13 on the web joint 123, and back-up block 22 other ends are fixedly connected with web joint 123.Back-up block 22 other ends can be finished the structure that is fixedly connected with known to the fixed sturcture of web joint 123 also can be those skilled in the art other.
Embodiment 2
Present embodiment provides a kind of automobile axle sleeve abnormal sound verification method, the automobile axle sleeve abnormal sound demo plant that has used embodiment 1 to describe, and as shown in Figure 3, the method comprises the steps.
301, the web joint 123 of automobile axle sleeve to be measured is fixedly connected on back-up block 22 other ends of automobile axle sleeve abnormal sound demo plant, and rocking bar assembly 21 suit of automobile axle sleeve abnormal sound demo plant is fixed on the body 11 of automobile axle sleeve to be measured, form the checking frock.
302, will verify that frock places the laboratory.
303, the end plate 12 with automobile axle sleeve to be measured separates with the second rubber assembly 112, so that during body 11 motion, the second rubber assembly 112 does not contact with end plate 12.
304, temperature to the first temperature in the regulation experiment chamber is shaken rocking bar assembly 21.
305, send abnormal sound when automobile axle sleeve to be measured, determine that then the friction of body 11 displacements sends one of reason of abnormal sound for automobile axle sleeve to be measured.
In the automobile axle sleeve abnormal sound verification method that the embodiment of the invention provides, because employed automobile axle sleeve abnormal sound demo plant includes only rocking bar assembly, back-up block and base, simple in structure, light, device can be placed do not exist the environment of neighbourhood noise and the noise of automobile own to verify, improved accuracy; Because not needing to assemble car load carries out pavement test, therefore saved cost; In addition owing to rocking bar assembly suit is fixed on the body of described automobile axle sleeve, and can drive body and move together, thereby can imitate the moving situation of automobile automobile axle sleeve when road traveling, find out the reason of automobile axle sleeve abnormal sound, and then can solve pointedly automobile axle sleeve abnormal sound problem.
Embodiment 3
Present embodiment provides a kind of automobile axle sleeve abnormal sound verification method, and as shown in Figure 4, the method comprises the steps.
401, the web joint 123 of automobile axle sleeve to be measured is fixedly connected on back-up block 22 other ends of automobile axle sleeve abnormal sound demo plant, and rocking bar assembly 21 suit of automobile axle sleeve abnormal sound demo plant is fixed on the body 11 of automobile axle sleeve to be measured, form the checking frock.
402, will verify that frock places the laboratory.
403, the end plate 12 with automobile axle sleeve to be measured separates with the second rubber assembly 112, so that during body 11 motion, the second rubber assembly 112 does not contact with end plate 12.
404, temperature to the first temperature in the regulation experiment chamber.
405, will verify that frock leaves standstill the fixed time in the laboratory, so that the temperature of automobile axle sleeve to be measured equals the first temperature.
406, shake rocking bar assembly 21, move together with the body 11 that drives automobile axle sleeve to be measured.
407, judge whether automobile axle sleeve to be measured sends abnormal sound, if so, then execution in step 408; Otherwise, then execution in step 414.
408, determine that body 11 displacements frictions sends one of reason of abnormal sound for automobile axle sleeve to be measured.
409, the temperature in the regulation experiment chamber is to the second temperature that is different from the first temperature.
410, will verify that frock leaves standstill the fixed time in the laboratory, so that the temperature of automobile axle sleeve to be measured equals the second temperature.
411, shake described rocking bar assembly 21, move together with the body 11 that drives automobile axle sleeve to be measured.
412, judge whether automobile axle sleeve to be measured sends abnormal sound, if so, then execution in step 421; Otherwise, then execution in step 413.
413, determine that the temperature in the laboratory is that automobile axle sleeve to be measured sends one of reason of abnormal sound.
414, end plate 12 and the second rubber assembly 112 are compressed.
Concrete when making body 11 motion, can produce friction of motion between the second rubber assembly 112 and the end plate 12.
415, repeating step 404-406.
416, judge whether automobile axle sleeve to be measured sends abnormal sound, if so, then execution in step 417; Otherwise, then execution in step 420.
417, determine that friction of motion is that automobile axle sleeve to be measured sends one of reason of abnormal sound between body 11 and the described end plate 12.
418, repeating step 409-411.
419, judge whether automobile axle sleeve to be measured sends abnormal sound, if so, then execution in step 421; Otherwise, then execution in step 420.
420, determine that the temperature in the laboratory is that automobile axle sleeve to be measured sends one of reason of abnormal sound.
421, determine that the temperature in the laboratory is not the reason that automobile axle sleeve to be measured sends abnormal sound.
In the automobile axle sleeve abnormal sound verification method that the embodiment of the invention provides, because employed automobile axle sleeve abnormal sound demo plant includes only rocking bar assembly, back-up block and base, simple in structure, light, device can be placed do not exist the environment of neighbourhood noise and the noise of automobile own to verify, improved accuracy; Because not needing to assemble car load carries out pavement test, therefore saved cost; In addition owing to rocking bar assembly suit is fixed on the body of described automobile axle sleeve, and can drive body and move together, thereby can imitate the moving situation of automobile automobile axle sleeve when road traveling, find out the reason of automobile axle sleeve abnormal sound, and then can solve pointedly automobile axle sleeve abnormal sound problem.
The above; be the specific embodiment of the present invention only, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (10)
1. an automobile axle sleeve abnormal sound demo plant is characterized in that, comprising: rocking bar assembly, back-up block and base;
Described back-up block one end is fixed on the described base, and the other end is fixedly connected with the web joint of described automobile axle sleeve, described automobile axle sleeve is supported in described base top;
Described rocking bar assembly suit is fixed on the body of described automobile axle sleeve, moves together so that described rocking bar assembly drives described body.
2. automobile axle sleeve abnormal sound demo plant according to claim 1 is characterized in that, hold-down bolt, the external thread of described hold-down bolt and the screw-internal thread fit of described tapped through hole that described rocking bar assembly is provided with tapped through hole and passes described tapped through hole.
3. automobile axle sleeve abnormal sound demo plant according to claim 1 is characterized in that, described rocking bar assembly outside surface is provided with rocking bar.
4. each described automobile axle sleeve abnormal sound demo plant is characterized in that also comprise set bolt, described set bolt passes the through hole on the described web joint according to claim 1-3, and the described back-up block other end is fixedly connected with described web joint.
5. an automobile axle sleeve abnormal sound verification method is characterized in that, right to use requires described each the described automobile axle sleeve abnormal sound demo plant of 1-3, comprising:
The web joint of automobile axle sleeve to be measured is fixedly connected on the back-up block other end of described automobile axle sleeve abnormal sound demo plant, and the rocking bar assembly suit of described automobile axle sleeve abnormal sound demo plant is fixed on the body of described automobile axle sleeve to be measured, form the checking frock;
Described checking frock is placed the laboratory;
The end plate of described automobile axle sleeve to be measured is separated with the second rubber assembly, so that described body when motion, described the second rubber assembly does not contact with described end plate;
Adjust temperature to the first temperature in the described laboratory, shake described rocking bar assembly;
When described automobile axle sleeve to be measured sends abnormal sound, determine that then described body displacement friction sends one of reason of abnormal sound for described automobile axle sleeve to be measured.
6. automobile axle sleeve abnormal sound verification method according to claim 5 is characterized in that, also comprises:
Adjust temperature in the described laboratory to the second temperature that is different from described the first temperature, shake described rocking bar assembly;
When described automobile axle sleeve to be measured does not send abnormal sound, determine that then the temperature in the described laboratory is that described automobile axle sleeve to be measured sends one of reason of abnormal sound.
7. automobile axle sleeve abnormal sound verification method according to claim 5 is characterized in that, when described automobile axle sleeve to be measured did not send abnormal sound, described automobile axle sleeve abnormal sound verification method also comprised:
Described end plate and described the second rubber assembly are compressed;
Adjust temperature in the described laboratory to described the first temperature, shake described rocking bar assembly;
When described automobile axle sleeve to be measured sends abnormal sound, determine that then friction of motion is that described automobile axle sleeve to be measured sends one of reason of abnormal sound between described body and the described end plate.
8. automobile axle sleeve abnormal sound verification method according to claim 7 is characterized in that, also comprises:
Adjust temperature in the described laboratory to the second temperature that is different from described the first temperature, shake described rocking bar assembly;
When described automobile axle sleeve to be measured does not send abnormal sound, determine that then the temperature in the described laboratory is that described automobile axle sleeve to be measured sends one of reason of abnormal sound.
9. according to claim 5 or 7 each described automobile axle sleeve abnormal sound verification methods, it is characterized in that, temperature in the described laboratory of described adjustment is to described the first temperature, shake between two sub-steps in the step of described rocking bar assembly, also comprise: described checking frock is left standstill the fixed time, so that the temperature of described automobile axle sleeve to be measured equals described the first temperature.
10. according to claim 6 or 8 each described automobile axle sleeve abnormal sound verification methods, it is characterized in that, temperature in the described laboratory of described adjustment is to the second temperature that is different from described the first temperature, shake between two sub-steps in the step of described rocking bar assembly, also comprise: described checking frock is left standstill the fixed time, so that the temperature of described automobile axle sleeve to be measured equals described the second temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210369411.9A CN102879190B (en) | 2012-09-28 | 2012-09-28 | Verifying device and verifying method for abnormal sound of automobile shaft sleeves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210369411.9A CN102879190B (en) | 2012-09-28 | 2012-09-28 | Verifying device and verifying method for abnormal sound of automobile shaft sleeves |
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| Publication Number | Publication Date |
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| CN102879190A true CN102879190A (en) | 2013-01-16 |
| CN102879190B CN102879190B (en) | 2015-03-11 |
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| CN201210369411.9A Expired - Fee Related CN102879190B (en) | 2012-09-28 | 2012-09-28 | Verifying device and verifying method for abnormal sound of automobile shaft sleeves |
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| CN109277323A (en) * | 2018-11-08 | 2019-01-29 | 奕松杰 | A kind of axle sleeve internal screw thread detection device |
| CN112577594A (en) * | 2020-12-29 | 2021-03-30 | 上海渤元信息科技有限公司 | Automobile shaft sleeve abnormal sound verification device and verification method |
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| CN109277323A (en) * | 2018-11-08 | 2019-01-29 | 奕松杰 | A kind of axle sleeve internal screw thread detection device |
| CN112577594A (en) * | 2020-12-29 | 2021-03-30 | 上海渤元信息科技有限公司 | Automobile shaft sleeve abnormal sound verification device and verification method |
| CN112577594B (en) * | 2020-12-29 | 2023-05-16 | 上海渤元信息科技有限公司 | Verification device and verification method for abnormal sound of automobile shaft sleeve |
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| CN102879190B (en) | 2015-03-11 |
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