CN102226739B - Apparatus and method for detecting tapered roller bearing rolling element upside-down mounting and missing mounting - Google Patents
Apparatus and method for detecting tapered roller bearing rolling element upside-down mounting and missing mounting Download PDFInfo
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- CN102226739B CN102226739B CN 201110002884 CN201110002884A CN102226739B CN 102226739 B CN102226739 B CN 102226739B CN 201110002884 CN201110002884 CN 201110002884 CN 201110002884 A CN201110002884 A CN 201110002884A CN 102226739 B CN102226739 B CN 102226739B
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Abstract
Provide is an apparatus for detecting tapered roller bearing rolling element upside-down mounting and missing mounting. The apparatus is composed of a conveying mechanism, an image acquisition module, a central processing module, a position detection mechanism and an abnormity sorting mechanism. The position detection mechanism comprises a shooting proximity switch at the shooting position and a sorting proximity switch at the sorting position on the conveying mechanism. The abnormity sorting mechanism is provided at a sorting position. The annular light source of the image acquisition module and a camera are provided at the shooting position. The blanking baffle plate of the abnormity sorting mechanism is provided at the gap of the sorting position. The blanking baffle plate is connected with the abnormity sorting cylinder. The detection method is that the camera shoots the image information of the bearing to be detected; the information is transmitted to a central processing module for processing and analyses; the detected bearing whose rolling element is missing or is upside-down mounted is eliminated by the abnormity sorting mechanism. The detection apparatus is characterized by simple operation, practicality and high efficiency and strong versatility. The detection precision is improved, an automatic continuous detection is realized, abnormal detected bearings can be rapidly and accurately eliminated and the efficiencies of detection and sorting are improved.
Description
Technical field
The present invention relates to pick-up unit and detection method after a kind of taper roll bearing assembles, especially relate to pick-up unit and the detection method of the rear rolling body upside-down mounting of a kind of taper roll bearing assembling and neglected loading.
Background technology
Known, taper roll bearing is comprised of conical inner ring, retainer, conical rolling element and conical outer ring.Taper roll bearing is divergence type normally, and wherein conical inner ring, retainer and conical rolling element are assembled into inner ring assembly, cooperate with the outer ring of divergence type again.Therefore, the assembling of taper roll bearing is in fact the assembling of inner ring assembly.
The assembling of tapered roller bearing internal ring assembly is finished by artificial or rigging equipment, because the situation of conical rolling element neglected loading can appear in equipment frock or manually wait the impact of many factors inevitably.When the tapering of conical rolling element hour, the situation of the large small end upside-down mounting of conical rolling element can appear inevitably.Given this, the inner ring assembly of taper roll bearing need have the detection operation one after assembling, be used for checking the situation that whether has rolling body upside-down mounting or neglected loading.
At present the most of Production of bearing of China enterprise adopts artificial visual check conical rolling element whether upside-down mounting or neglected loading.But it is undetected that visual check easily causes: the production lot of bearing is larger, and the retainer of tapered roller bearing internal ring assembly and conical inner ring gap are smaller, can because ambient light deficiency, procurator's visual fatigue, sense of responsibility inadequate etc. cause undetected.If adopt the method for hand-turning tapered roller bearing internal ring assembly, can not exclusively cause the undetected of rolling body upside-down mounting because of rotating, and the method can't detect the neglected loading of rolling body.
Rolling body upside-down mounting or neglected loading will have a strong impact on the quality of taper roll bearing, if let alone to flow to market, user and main frame producer be sustained a loss, and also can affect economic benefit and the prestige of Production of bearing enterprise.
Application number is that 201010206359.6 patent of invention discloses " anti-pick-up unit and the detection method of filling of a kind of conical roller bearing inner ring assembly ", this pick-up unit comprises base, also comprise one with the cylindrical mandrel of ring-type step, and 1 or 2 group regulated block and screw association, the cylindrical mandrel comprises the top small core shaft, the circular step at the large mandrel in bottom and middle part, the lower end of cylindrical mandrel is fixedly connected with base, orthogonal installation, regulate block in a side of cylindrical mandrel with the level, be connected with base screw by suitable distance, the product small end that will detect is put into the cylindrical mandrel to circular step, the operator rotates with hand, can rotate by whole circle such as product, illustrate that this part Product Assembly is normal, as the large end of running into conical roller is conditioned block and blocks, and can not rotate by whole circle, and then explanation has conical roller reversed phenomenon.This mode detection efficiency is low, and can't detect simultaneously the neglected loading of rolling body.Device for detection of the rolling body neglected loading substantially all is to utilize mechanical hook-up to detect at present, if change the model of taper roll bearing, device is adjusted loaded down with trivial details, and dirigibility is relatively poor.
Application number is that 200720001975.1 utility model patent discloses a kind of " on-line detection device for missing of bearing rolling element and rivet ", whether this device exists rolling body or rivet disappearance after can detecting online the deep groove ball bearing assembling, but it can't detect the whether upside-down mounting of taper roll bearing rolling body, and detects and the efficient of getting rid of unusual bearing remains further to be improved.
Summary of the invention
Technical matters to be solved by this invention provides a kind of taper roll bearing rolling body upside-down mounting neglected loading pick-up unit and detection method, the situation that whether has rolling body upside-down mounting or neglected loading after taper roll bearing assembling that can the fast detecting different model is finished, and rapidly with its eliminating, high efficiency.
The present invention solves the problems of the technologies described above the technical scheme that adopts to be: taper roll bearing rolling body upside-down mounting neglected loading pick-up unit, by conveying mechanism, image capture module, central processing module, position detecting mechanism and unusual sorting mechanism form, position detecting mechanism comprises take pictures approach switch and sorting approach switch, take pictures approach switch and sorting approach switch is separately positioned on take pictures position and sort location on the conveying mechanism, unusual sorting mechanism is arranged on the sort location on the conveying mechanism, central processing module is connected with position detecting mechanism with image capture module by circuit, described image capture module is by the ring-type light source, video camera and image pick-up card form, ring-type light source and video camera be arranged on the position of taking pictures on the conveying mechanism directly over, video camera is connected with image pick-up card by video line, image pick-up card is connected with the corresponding interface of central processing module, described unusual sorting mechanism is comprised of discharge flapper and unusual sorting cylinder, discharge flapper is arranged on the indentation, there of sort location on the material conveying road of conveying mechanism, and discharge flapper is connected with unusual sorting cylinder.
Described ring-type light source and video camera by the height control support be arranged on conveying mechanism take pictures the position directly over.
Described conveying mechanism is comprised of material conveying road, propulsion cylinder and normal sorting cylinder, and propulsion cylinder and normal sorting cylinder are separately positioned on take pictures position and the sort location in material conveying road.
Described material conveying road is the U-shaped material road with right angle corner.
Described central processing module is comprised of computing machine and communication unit, computing machine is connected with image pick-up card by corresponding Interface and Communication unit, and communication unit is connected with the sorting mechanism of being connected with the approach switch of taking pictures, sorting approach switch, conveying mechanism respectively by circuit.
The method of utilizing taper roll bearing rolling body upside-down mounting neglected loading pick-up unit to detect, detecting step is:
(1), the large end of tested bearing roller is placed on the conveying mechanism up, it is advanced forward on conveying mechanism;
(2), the approach switch of taking pictures detects the backward central processing module output detection signal of tested bearing, the control video camera was taken pictures after central processing module was received detection signal, and by image pick-up card image information was sent to central processing module;
(3), after central processing module receives image information, the image information that receives is carried out medium filtering and binary conversion treatment and determined the center of circle of tested bearing in the image, controlling simultaneously conveying mechanism promotes tested bearing and moves ahead;
(4), the image that utilizes the central processing module analyzing and processing to cross, judge whether tested bearing lacks rolling body or rolling body upside-down mounting, central processing module is got rid of to the tested bearing that unusual sorting mechanism transmitted signal will lack rolling body or rolling body upside-down mounting after analyzing, and normal tested bearing then continues to deliver to the finished product district by conveying mechanism.
The determination methods that tested bearing lacks rolling body is, utilize the continuous black region length of each rolling body position circumferencial direction that central processing module measures successively, and compare with presupposed information, as the black region length of measuring is greater than the size of a rolling body, and central processing module judges is for lacking rolling body.
The determination methods of tested bearing roller upside-down mounting is, judges respectively according to the type of the bearing roller of prior setting:
(1), large judgement of holding with the rolling body of depression: utilize the large end depression of rolling body position in the central processing module detected image, depression rim detection to two a black picture element band then is judged as rolling body does not have upside-down mounting, if can't detect two black picture element bands then be judged as the rolling body upside-down mounting;
(2), large end do not have the judgement of the rolling body of depression: utilize the length in rolling body large end white pixel zone and black-pixel region in the central processing module detected image and compare, the length of black-pixel region then is judged as the rolling body upside-down mounting greater than the white pixel zone length.
The method of getting rid of the tested bearing that lacks rolling body or rolling body upside-down mounting is, when the tested bearing that moves ahead with conveying mechanism after taking pictures arrives sort location, the sorting approach switch detects the backward central processing module output detection signal of tested bearing, central processing module is received behind the detection signal solenoid valve transmitted signal according to graphical analysis result unusual sorting cylinder action in the unusual sorting mechanism of control, unusual sorting cylinder pulling discharge flapper makes its inclination, after the discharge flapper landing of tested bearing by inclination, unusual sorting cylinder drives discharge flapper sets back it.
The invention has the beneficial effects as follows: whether have the situation of rolling body upside-down mounting or neglected loading after the taper roll bearing that can detect different model assembles and finishes, pick-up unit is simple to operate, practicality and high efficiency, highly versatile, but the quality of Effective Raise taper roll bearing.The position of the tested bearing of position detecting mechanism Accurate Determining that arranges has been improved accuracy of detection and has been realized the robotization continuous detecting.The unusual sorting mechanism that arranges can be got rid of unusual tested bearing fast and accurately, has improved detection and the efficiency of separation.
Description of drawings
Fig. 1 is the fundamental diagram of the embodiment of the invention.
Fig. 2 is the structure principle chart of the embodiment of the invention.
Mark among the figure: 1, conveying mechanism, 101, the material conveying road, 102, propulsion cylinder, 103, normal sorting cylinder, 104, breach, 2, tested bearing, 3, ring-type light source, 4, video camera, 5, image pick-up card, 6, central processing module, 601, computing machine, 602, communication unit, 7, unusual sorting mechanism, 701, discharge flapper, 702, unusual sorting cylinder, 8, the approach switch of taking pictures, 9, the sorting approach switch, 10, the height control support.
Embodiment
As shown in Figure 1, 2, taper roll bearing rolling body upside-down mounting neglected loading pick-up unit is comprised of conveying mechanism 1, image capture module, central processing module 6, position detecting mechanism and unusual sorting mechanism 7.Central processing module 6 is connected with position detecting mechanism with image capture module by circuit, image capture module is used for gathering the image information of tested bearing 2 after receiving image pick-up signal, the image that shows tested bearing, and image is sent to central processing module 6 in real time.Central processing module 6 is used for receiving the image information of tested bearing 2 and processes in real time.
Described image capture module is comprised of ring-type light source 3, video camera 4 and image pick-up card 5, ring-type light source 3 and video camera 4 be arranged on the position of taking pictures on the conveying mechanism 1 directly over, video camera 4 is connected with image pick-up card 5 by video line, and image pick-up card 5 is connected with the corresponding interface of central processing module 6.Ring-type light source 3 and video camera 4 by height control support 10 be arranged on conveying mechanism 1 take pictures the position directly over, the ring-type light source provides suitable illuminating effect for photographic images.The height of ring-type light source 3 and the tested bearing 2 of video camera 4 distances all can independently be adjusted.
Position detecting mechanism comprises take pictures approach switch 8 and sorting approach switch 9.Take pictures approach switch 8 and sorting approach switch 9 is separately positioned on take pictures position and sort location on the conveying mechanism 1.Take approach switch 8 for detection of tested bearing 2 whether in the camera site of video camera 4, sorting approach switch 9 is for detection of tested bearing 2 sort location on conveying mechanism 1 whether, and positional information is sent to central processing module 6 in real time.
Unusual sorting mechanism 7 is arranged on the sort location on the conveying mechanism 1.Unusual sorting mechanism 7 is comprised of discharge flapper 701 and unusual sorting cylinder 702, discharge flapper 701 is arranged on breach 104 places of sort location on the material conveying road 101 of conveying mechanism 1, one end of discharge flapper 701 and breach 104 places side walls hinged, discharge flapper 701 is connected with unusual sorting cylinder 702.Unusual sorting cylinder 702 drive discharge flappers 701 back move it are tilted, thereby make tested bearing 2 landings that move on the discharge flapper 701.
Described conveying mechanism 1 is comprised of material conveying road 101, propulsion cylinder 102 and normal sorting cylinder 103, and propulsion cylinder 102 and normal sorting cylinder 103 are separately positioned on take pictures position and the sort location in material conveying road 101.Material conveying road 101 is used for guaranteeing the movement locus of tested bearing.Propulsion cylinder 102 is advanced into sort location for the tested bearing 2 after shot detection is finished; Normal sorting cylinder 103 is advanced into next station with tested bearing 2 after being used for receiving the detection normal signal of central processing module 6.The U-shaped material road of material conveying road 101 for having right angle corner, a corner is provided with breach 104 therein.The discharge flapper 701 of unusual sorting mechanism 7 is arranged on breach 104 positions, and mutually concordant with material conveying road 101.Conveying mechanism 1 also can adopt the form of conveying belt to carry out the conveying of tested bearing 2.
Described central processing module 6 is comprised of computing machine 601 and communication unit 602, computing machine 601 is connected connection by corresponding Interface and Communication unit 602 with image pick-up card, communication unit 602 is connected with the approach switch 8 of taking pictures, sorting approach switch 9, conveying mechanism 1 and the sorting mechanism of being connected 7 respectively by circuit.
The method of utilizing taper roll bearing rolling body upside-down mounting neglected loading pick-up unit to detect, detecting step is:
(1), the large end of tested bearing 2 rolling bodys is placed on the conveying mechanism 1 up, it is advanced forward on conveying mechanism 1;
(2), move to taking pictures during the position of video camera 4 belows when tested bearing 2, the approach switch 8 of taking pictures passes through communication unit 602 to computing machine 601 output detection signals of central processing module 6 after detecting tested bearing 2, control video camera 4 was taken pictures after the computing machine 601 of central processing module 6 was received detection signal, and the image information that photographs was sent to the computing machine 601 of central processing module 6 by image pick-up card 5;
(3), after central processing module 6 receives image information, the image information that receives is carried out medium filtering and binary conversion treatment and determined the center of circle of tested bearing in the image, controlling simultaneously conveying mechanism 1 promotes tested bearing 2 and moves ahead;
(4), the image that utilizes central processing module 6 analyzing and processing to cross, judge whether tested bearing 2 lacks rolling body or rolling body upside-down mounting, central processing module 6 is got rid of to the tested bearing 2 that unusual sorting mechanism 7 transmitted signals will lack rolling body or rolling body upside-down mounting after analyzing, and 2 continuation of normal tested bearing are delivered to the finished product district by conveying mechanism 1.
The processing of 6 pairs of image informations that receive of central processing module can be adopted following methods:
The disposal route of 1, carrying out medium filtering is: according to formula
Carry out medium filtering, the noise in the filtering image.
Wherein
Be a pixel in the processed image, coordinate is
,
Be with
Centered by,
The intermediate value of pixel gray-scale value in the scope that window is chosen, i.e. the output valve of medium filtering,
Be with
Centered by,
The set of pixel gray-scale value in the scope that window is chosen.
The method of 2, carrying out binary conversion treatment is: according to formula
Carry out binary conversion treatment, the image information of outstanding tested bearing 2.
Wherein
The gray-scale value of tested bearing 2 image each points,
Be the threshold value of setting,
It is the gray-scale value to exporting behind the image binaryzation.
Threshold value
Calculate according to the threshold method of the maximum equation difference, wherein
The lower limit of value
According to formula
Determine,
The upper limit of value
Determine between [210,225], the method can effectively reduce calculated amount, improves detection speed.
Wherein
The minimum gradation value in tested bearing 2 images,
The maximum gradation value in tested bearing 2 images,
It is the size of tested bearing 2 images.
3, the method for determining the center of circle of tested bearing in the image is: seek at random the monochrome pixels point of interface of inner ring in 3 tested bearing 2 images, establish its coordinate and be
, according to formula
Determine the possible center of circle of tested bearing 2 in image
With the possibility radius
Said method is repeated 3-5 time, obtain each possible center of circle and possibility radius, finally calculate repeatedly the arithmetic mean of the center of circle and radius, and with the coordinate of this mean value as the image centre bearer center of circle
And radius
Tested bearing lacks the determination methods of rolling body and is in the testing process, utilize the continuous black region length of each rolling body position circumferencial direction that central processing module measures successively, and compare with presupposed information, as the black region length of measuring is greater than the size of a rolling body, and central processing module judges is for lacking rolling body.When not having the rolling body neglected loading, the length of this black region is less than the length of a rolling body.Can judge accordingly whether tested bearing exists the situation of rolling body neglected loading.
Because the rolling body of taper roll bearing has two kinds of different versions, a kind of large end at rolling body is with depression, and another kind of large end does not have depression.Therefore the image difference that these two kinds of rolling bodys are taken has different determination methods to the taper roll bearing of these two kinds of different structure forms.The judgement of tested bearing roller upside-down mounting should be judged respectively according to the type of the bearing roller of prior setting:
(1), large judgement of holding with the rolling body of depression: utilize the large end depression of rolling body position in the central processing module detected image, the back pocket edge is processed in the relevant position two black picture element bands will occur, depression rim detection to two a black picture element band then is judged as rolling body does not have upside-down mounting, if can't detect two black picture element bands then be judged as the rolling body upside-down mounting;
(2), large end does not have the judgement of the rolling body of depression: utilize the length in rolling body large end white pixel zone and black-pixel region in the central processing module detected image and compare.Do not have the white pixel zone of its large end of rolling body of upside-down mounting longer, the black-pixel region of adjacent both sides is shorter; The white pixel zone of its large end of rolling body of upside-down mounting is relatively short, and the black-pixel region of adjacent both sides is relatively long.The length of black-pixel region then is judged as the rolling body upside-down mounting greater than the white pixel zone length accordingly.
Detecting the method for getting rid of the tested bearing that lacks rolling body or rolling body upside-down mounting after analyzing is, when the tested bearing 2 that moves ahead with conveying mechanism 1 after taking pictures arrives sort location, sorting approach switch 9 detects tested bearing 2 backward central processing module 6 output detection signals, computing machine 601 in the central processing module 6 is controlled the solenoid valve transmitted signal that unusual sorting cylinder 702 moves according to the graphical analysis result after receiving detection signal in unusual sorting mechanism 7, the unusual sorting cylinder 702 pulling discharge flappers 701 of solenoid valve action control make its inclination, fall into the blanking road of carrying unusual bearing after discharge flapper 701 landings of tested bearing 2 by inclination, unusual sorting cylinder 702 drives discharge flapper 701 sets back it, continues assorting room.
Technical scheme of the present invention can be applicable to the production scene of taper roll bearing, the situation that whether has rolling body upside-down mounting or neglected loading after finishing for detection of different model taper roll bearing assembling, pick-up unit is simple to operate, practicality and high efficiency, highly versatile, but the quality of Effective Raise taper roll bearing.
It should be noted that at last: the technical scheme of above embodiment is the technical scheme that the present invention can adopt, but is not limited to this scheme.
Claims (6)
1. taper roll bearing rolling body upside-down mounting neglected loading pick-up unit, it is characterized in that: by conveying mechanism (1), image capture module, central processing module (6), position detecting mechanism and unusual sorting mechanism (7) form, position detecting mechanism comprises the approach switch of taking pictures (8) and sorting approach switch (9), take pictures approach switch (8) and sorting approach switch (9) is separately positioned on take pictures position and sort location on the conveying mechanism (1), unusual sorting mechanism (7) is arranged on the sort location on the conveying mechanism (1), central processing module (6) is connected with position detecting mechanism with image capture module by circuit, described image capture module is by ring-type light source (3), video camera (4) and image pick-up card (5) form, ring-type light source (3) and video camera (4) be arranged on the position of taking pictures on the conveying mechanism (1) directly over, video camera (4) is connected with image pick-up card (5) by video line, image pick-up card (5) is connected with the corresponding interface of central processing module (6), described unusual sorting mechanism (7) is comprised of discharge flapper (701) and unusual sorting cylinder (702), discharge flapper (701) is arranged on the breach (104) of the upper sort location in material conveying road (101) of conveying mechanism (1) and locates, and discharge flapper (701) is connected with unusual sorting cylinder (702).Described conveying mechanism (1) is by material conveying road (101), propulsion cylinder (102) and normal sorting cylinder (103) form, the U-shaped material road of material conveying road (101) for having right angle corner, propulsion cylinder (102) and normal sorting cylinder (103) are separately positioned on take pictures position and the sort location in material conveying road (101), and lay respectively at two corners in U-shaped material road, tested bearing (2) after propulsion cylinder (102) is used for shot detection finished is advanced into sort location, and normal sorting cylinder (103) is advanced into next station with tested bearing (2) after being used for receiving the detection normal signal of central processing module (6).
2. taper roll bearing rolling body upside-down mounting neglected loading pick-up unit as claimed in claim 1 is characterized in that: described ring-type light source (3) and video camera (4) by height control support (10) be arranged on conveying mechanism (1) take pictures the position directly over.
3. taper roll bearing rolling body upside-down mounting neglected loading pick-up unit as claimed in claim 1, it is characterized in that: described central processing module (6) is comprised of computing machine (601) and communication unit (602), computing machine (601) is connected 5 by corresponding Interface and Communication unit (602) with image pick-up card) connect, communication unit (602) is connected with the approach switch of taking pictures (8), sorting approach switch (9), conveying mechanism (1) and the sorting mechanism of being connected (7) respectively by circuit.
4. the method for utilizing taper roll bearing rolling body upside-down mounting neglected loading pick-up unit as claimed in claim 1 to detect, it is characterized in that: detecting step is:
(1), the large end of tested bearing roller is placed on the conveying mechanism up, it is advanced forward on conveying mechanism;
(2), the approach switch of taking pictures detects the backward central processing module output detection signal of tested bearing, the control video camera was taken pictures after central processing module was received detection signal, and by image pick-up card image information was sent to central processing module;
(3), after central processing module receives image information, the image information that receives is carried out medium filtering and binary conversion treatment and determined the center of circle of tested bearing in the image, controlling simultaneously conveying mechanism promotes tested bearing and moves ahead;
(4), the image that utilizes the central processing module analyzing and processing to cross, judge whether tested bearing lacks rolling body or rolling body upside-down mounting, central processing module is got rid of to the tested bearing that unusual sorting mechanism transmitted signal will lack rolling body or rolling body upside-down mounting after analyzing, and normal tested bearing then continues to deliver to the finished product district by conveying mechanism;
The determination methods of tested bearing roller upside-down mounting is, judges respectively according to the type of the bearing roller of prior setting:
(1), large judgement of holding with the rolling body of depression: utilize the large end depression of rolling body position in the central processing module detected image, depression rim detection to two a black picture element band then is judged as rolling body does not have upside-down mounting, if can't detect two black picture element bands then be judged as the rolling body upside-down mounting;
(2), large end do not have the judgement of the rolling body of depression: utilize the length in rolling body large end white pixel zone and black-pixel region in the central processing module detected image and compare, the length of black-pixel region then is judged as the rolling body upside-down mounting greater than the white pixel zone length.
5. the method for utilizing taper roll bearing rolling body upside-down mounting neglected loading pick-up unit to detect as claimed in claim 4, it is characterized in that: the determination methods that tested bearing lacks rolling body is, utilize the continuous black region length of each rolling body position circumferencial direction that central processing module measures successively, and compare with presupposed information, as the black region length of measuring is greater than the size of a rolling body, and central processing module judges is for lacking rolling body.
6. the method for utilizing taper roll bearing rolling body upside-down mounting neglected loading pick-up unit to detect as claimed in claim 4, it is characterized in that: the method for getting rid of the tested bearing that lacks rolling body or rolling body upside-down mounting is, when the tested bearing that moves ahead with conveying mechanism after taking pictures arrives sort location, the sorting approach switch detects the backward central processing module output detection signal of tested bearing, central processing module is received behind the detection signal solenoid valve transmitted signal according to graphical analysis result unusual sorting cylinder action in the unusual sorting mechanism of control, unusual sorting cylinder pulling discharge flapper makes its inclination, after the discharge flapper landing of tested bearing by inclination, unusual sorting cylinder drives discharge flapper sets back it.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110002884 CN102226739B (en) | 2011-01-07 | 2011-01-07 | Apparatus and method for detecting tapered roller bearing rolling element upside-down mounting and missing mounting |
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| CN 201110002884 CN102226739B (en) | 2011-01-07 | 2011-01-07 | Apparatus and method for detecting tapered roller bearing rolling element upside-down mounting and missing mounting |
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| CN102226739A CN102226739A (en) | 2011-10-26 |
| CN102226739B true CN102226739B (en) | 2013-02-13 |
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| CN201945451U (en) * | 2011-01-07 | 2011-08-24 | 河南科技大学 | Detecting device for inverted loading and neglected loading of conical roller bearing rolling element |
-
2011
- 2011-01-07 CN CN 201110002884 patent/CN102226739B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3234443A1 (en) * | 1982-01-18 | 1983-07-21 | VEB Werkzeugmaschinenkombinat "Fritz Heckert" Karl-Marx-Stadt, DDR 9030 Karl-Marx-Stadt | Device for detecting thermally active changes of state in bearings |
| CN200993170Y (en) * | 2006-07-25 | 2007-12-19 | 河南科技大学 | Bearing rolling body and rivet missing on-line detecting device |
| CN101871841A (en) * | 2010-06-11 | 2010-10-27 | 宁波更大集团有限公司 | Reverse assembly detection device and detection method for conical roller bearing inner ring assembly |
| CN201945451U (en) * | 2011-01-07 | 2011-08-24 | 河南科技大学 | Detecting device for inverted loading and neglected loading of conical roller bearing rolling element |
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| CN102226739A (en) | 2011-10-26 |
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