CN101131339A - High/low-temperature impact life testing device especially for bearing - Google Patents
High/low-temperature impact life testing device especially for bearing Download PDFInfo
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- CN101131339A CN101131339A CNA2007100715697A CN200710071569A CN101131339A CN 101131339 A CN101131339 A CN 101131339A CN A2007100715697 A CNA2007100715697 A CN A2007100715697A CN 200710071569 A CN200710071569 A CN 200710071569A CN 101131339 A CN101131339 A CN 101131339A
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- 238000012360 testing method Methods 0.000 title claims abstract description 118
- 230000005540 biological transmission Effects 0.000 claims description 14
- 238000012856 packing Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 238000004088 simulation Methods 0.000 abstract description 2
- 230000001172 regenerating effect Effects 0.000 abstract 2
- 238000009863 impact test Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 206010057071 Rectal tenesmus Diseases 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 208000012271 tenesmus Diseases 0.000 description 1
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Abstract
The invention discloses a kind of test apparatus of high and low temperature impact lifetime special used for bearings. The device use heat regenerative area, test and cold storage area three-layer structural style. In the test area installed with train institution drive by belt, can be used for life testing of multi-bearing at the same time. The temperature of the test area was regulated by the control system comprised of circulating air hole connecting the heat regenerative area and cold storage area, governor valve, temperature sensor and control circuit, through the circulating mechanism of cold and hot air flow to implement the temperature control of the test area, so as to achieve the simulation the temperature change in actual status of bearing purposes. Through the jockey pulley regulating mechanism set in test area to compensate the load swing of belt driving system due to temperature changes in test area, and the tested bearing can maintain constant load.
Description
Technical field
The present invention relates to bearing high and low temperature impact test device, particularly relate to a kind of high/low-temperature impact life testing device of bearing special use.
Background technology
Bearing is the basic components of widespread use in the engineering goods, plays crucial effects to guaranteeing product quality.According to statistics, in the rotating machinery that uses rolling bearing, nearly 30% mechanical fault is owing to bearing failure causes.For this reason, people more and more pay attention to the quality and reliability of bearing, the durability test of bearing and evaluation work have been put on agenda, and particularly to the bearing of a few thing under rugged surroundings, its durability test has become the requisite important step of quality control.
Yet, the development of bearing life rig for testing according to the survey relatively lags behind, only can carry out at present the bearing life test under some conventional environment, and to a few thing in rugged surroundings, have the durability test of bearing (as automobile bearing etc.) under extreme environment of significant impact also to lack effective research technique and rig for testing to product quality simultaneously, still do not have specially high and low temperature impact test equipment in the market at bearing.Therefore, how according to the actual condition of bearing, setting up the environmental longevity test that a cover rugged surroundings simulation system is specifically designed to bearing, make to access accurate reflection the actual life of bearing, is a problem that is worth research.
Summary of the invention
The object of the present invention is to provide a kind of high/low-temperature impact life testing device of bearing special use, provide support the serviceable life of assessing high and low temperature environment lower bearing for research.
In order to achieve the above object, the technical solution used in the present invention is to comprise:
Three box structures: comprise heat-accumulating area, test site and cold-storage district three casees, be provided with the thermal-insulating sealing district between the inwall of three box structures and its outer wall; Wherein, the test site is in the middle layer, and the inwall of test site one side is installed gear mechanism, and this side is installed gear train and governor motion simultaneously; The top of test site is heat-accumulating area, and the heat-accumulating area rear side is installed the machine that heats; The following of test site is the cold-storage district, and the rear side in cold-storage district is installed refrigeration machine; Between test site and the heat-accumulating area, respectively be provided with two circulating air discharge orifices between test site and the cold-storage district, in each circulating air discharge orifice variable valve is installed, electric cabinet, display are installed in the side of three box structures;
Gear train: comprise motor mounting plate, motor, driving pulley, negative pulley wheel, V-shape belt and final drive shaft, wherein, motor is fixedlyed connected with driving pulley is coaxial, driving pulley is connected with negative pulley wheel by V-shape belt, negative pulley wheel is fixedlyed connected with final drive shaft is coaxial, final drive shaft is installed on the sidewall of test site, by the bearing fixing on motor mounting plate and the work box internal backplane;
Gear mechanism: comprise the work box internal backplane, set nut, the main drive belt wheel, first adjusts the slide block base, second adjusts the slide block base, the 3rd adjusts the slide block base, the 4th adjusts the slide block base, belt, test bearing belt pulley assembly, wherein, the main drive belt wheel is fixed on the final drive shaft, fix first on the work box internal backplane and adjust the slide block base, second adjusts the slide block base, the 3rd adjusts slide block base and the 4th adjusts the slide block base, each adjusts the slide block base identical test bearing of set nut mount fixing structure belt pulley assembly, and second adjusts the slide block base, the 3rd test bearing of adjusting on the slide block base will intersect arranged in dislocation with the belt pulley assembly; Belt connects main drive belt wheel and each test bearing belt pulley assembly;
Governor motion: comprise counterweight, spacing adjustment plate, spacing adjustment screw, pre-bearing up pulley, pretension lever, afterburning back shaft, pretension load transmission shaft and load lever, wherein, counterweight is suspended on an end of load lever, the bottom of load lever is fixed with safety feature, the other end of load lever is fixed on an end of pretension load transmission shaft, pretension load transmission shaft be positioned at final drive shaft under, by the sidewall of the bearing fixing on motor mounting plate and the work box internal backplane in the test site; The other end of pretension load transmission shaft and the internal fixation of an end in the test site of pretension lever are connected, and the other end of pretension lever is connected with afterburning back shaft, and pre-bearing up pulley is installed on the afterburning back shaft, and pre-bearing up pulley is connected with the belt contact of gear mechanism;
Test bearing belt pulley assembly: comprise the test belt pulley, round nut, packing ring, test bearing, axle, test is with belt pulley adjustment cover, and wherein, the inner ring of test bearing is fixed on the axle, the outer ring is fixed in test and is put with the belt pulley adjustment, test is individually fixed in packing ring, set nut and bolt and adjusts on the slide block base with the external cylindrical surface installation test belt pulley of belt pulley adjustment cover, test bearing inner ring outer face, and outer face, test bearing outer ring is fixed with round nut;
Safety feature: comprise spacing adjustment plate and spacing adjustment screw, wherein, on motor mounting plate, spacing adjustment screw is installed on the spacing adjustment plate by nut spacing adjustment plate by screw retention;
The useful effect that the present invention has is: this device solves bearing under the high and low temperature shock environment, carry out the technological means problem of durability test, can make the bearing life test of under the high/low-temperature impact environment, working more accurately, reliable; Simultaneously since this device adopted can the flexible gear mechanism of arranging, can carry out the thermocyclings of many cover bearings simultaneously, improved the efficient of durability test; Filled up towards the blank of the special-purpose test unit of high low temperature of bearing.
Description of drawings
Fig. 1 is profile of the present invention and formation side view;
Fig. 2 is profile of the present invention and formation front view;
Fig. 3 is the gear mechanism figure that test bearing of the present invention is used;
Fig. 4 is the A-A cut-open view of Fig. 3;
Fig. 5 is a test bearing belt pulley assembly;
Fig. 6 is the rear view of Fig. 3;
Among the figure: 1-motor mounting plate, 2-work box internal backplane, 3-set nut, 4-main drive belt wheel, the pre-bearing up pulley of 5-, 6-pretension lever, the afterburning back shaft of 7-, 8-pretension load transmission shaft, the 9-lever of loading, the 10-motor, 11-driving pulley, 12-negative pulley wheel, 13-V type belt, 14-final drive shaft, 15-counterweight, the spacing adjustment plate of 16-, the spacing adjustment screw of 17-, 18-first adjusts the slide block base, and 19-second adjusts the slide block base, 20-the 3rd adjusts the slide block base, 21-the 4th adjusts slide block base, 22-belt, 23-test bearing belt pulley assembly, 24-test belt pulley, the 25-round nut, 26-packing ring, 27-test bearing, the 28-axle, 29-tests with belt pulley adjustment cover.
Embodiment
Embodiment of the invention bearing high and low temperature impact test comprises three box structures, gear train, gear mechanism, test bearing belt pulley assembly, governor motion and control system.
Three box structures comprise heat-accumulating area, test site and cold-storage district three casees as illustrated in fig. 1 and 2, are provided with the thermal-insulating sealing district between three box structure inwalls and its outer wall, and heat insulation wall adopts the thick polyurethane foam plastics of 100mm to make, and make the air of test site be unlikely to leak; Wherein, the test site is in the middle layer, and gear mechanism is installed in the inside of test site one side, and this side is installed gear train and governor motion simultaneously; The top of test site is heat-accumulating area, and the heat-accumulating area rear side is installed the machine that heats; The following of test site is the cold-storage district, and the rear side in cold-storage district is installed refrigeration machine; Between test site and the heat-accumulating area, respectively be provided with two circulating air discharge orifices between test site and the cold-storage district, in each circulating air discharge orifice variable valve is installed, electric cabinet, display are installed in the side of three box structures; The temperature of test site is regulated by the control system of compositions such as circulating air discharge orifice, variable valve, temperature sensor and control circuit, the temperature of test site is risen to+180 ℃ rapidly, after keeping setting-up time, cooling rapidly, the temperature of test site is reached-60 ℃, behind the maintenance setting-up time, enter next circulation, make temperature in test site alternation repeatedly in-60 ℃～+ 180 ℃ scopes, form height-low temperature circulation impact environment; Automatically stop test after the length preset time in operation,, judge the reliability situation of bearing under height-low temperature circulation impact environment by to by the check of test bearing vibration.
Gear train as shown in Figure 3, comprise motor mounting plate 1, motor 10, driving pulley 11, negative pulley wheel 12, V-shape belt 13 and final drive shaft 14, wherein, motor 10 is installed and is fixed on the motor mounting plate 1, motor 10 and driving pulley 11 coaxial fixedlying connected, driving pulley 11 is connected with negative pulley wheel 12 by V-shape belt 13, negative pulley wheel 12 and final drive shaft 14 coaxial fixedlying connected, final drive shaft 14 is installed on the sidewall of test site, by the bearing fixing on motor mounting plate 1 and the work box internal backplane 2, final drive shaft 14 adopts the labyrinth sealing circle; Gear train is used to gear mechanism that power is provided, and makes gear mechanism by certain speed rotation, satisfies the requirement of bearing test.
Gear mechanism as shown in Figure 4, comprise work box internal backplane 2, set nut 3, main drive belt wheel 4, first adjusts slide block base 18, second adjusts slide block base 19, the 3rd adjusts slide block base 20, the 4th adjusts slide block base 21, belt 22, test bearing belt pulley assembly 23, wherein, main drive belt wheel 4 is fixed on the final drive shaft 14, fix first on the work box internal backplane 2 as shown in Figure 3 and adjust slide block base 18, second adjusts slide block base 19, the 3rd adjusts slide block base 20 and the 4th adjusts slide block base 21, each is adjusted the slide block base and adjusts slide block base 19 with the identical test bearing of set nut 3 mount fixing structures with belt pulley assembly 23, the second, the 3rd test bearing of adjusting on the slide block base 20 will intersect arranged in dislocation with belt pulley assembly 23; Belt 22 connects main drive belt wheel 4 and each test bearing belt pulley assembly 23 as shown in the figure; Main drive belt wheel 4 drives belt pulley assembly 23 rotation simultaneously of 7 test bearings during test, and each adjusts the tensioning situation that the slide block base is used to adjust belt; Can arrange to adjust number and layout, the belt pulley length etc. of slide block base, belt pulley assembly according to once testing the number that needs to detect bearing.
Test bearing with the belt pulley assembly as shown in Figure 5, comprise test belt pulley 24, round nut 25, packing ring 26, test bearing 27, axle 28, test overlaps 29 with the belt pulley adjustment, wherein, the inner ring of test bearing 27 is fixed on the axle 28, and test is fixed in on the belt pulley adjustment cover 29 in the outer ring, and 29 external cylindrical surface installation test belt pulley 24 is overlapped in test with the belt pulley adjustment, test bearing 27 inner ring outer faces are individually fixed in packing ring 26, set nut 3 and bolt and adjust on the slide block base, and outer face, test bearing 27 outer ring is fixing with round nut 25.
Governor motion as shown in Figure 6, comprise counterweight 15, spacing adjustment plate 16, spacing adjustment screw 17, pre-bearing up pulley 5, pretension lever 6, afterburning back shaft 7, pretension load transmission shaft 8 and load lever 9, wherein, counterweight 15 is suspended on an end of load lever 9, the bottom of load lever 9 is fixed with safety feature, this safety feature comprises spacing adjustment plate 16 and spacing adjustment screw 17, spacing adjustment plate 16 by screw retention on motor mounting plate 1, spacing adjustment screw 17 is installed on the spacing adjustment plate 16 by nut, the other end of load lever 9 is fixed on an end of pretension load transmission shaft 8, pretension load transmission shaft 8 be positioned at final drive shaft 14 under, by the sidewall of the bearing fixing on motor mounting plate 1 and the work box internal backplane 2 in the test site; The other end of pretension load transmission shaft 8 and the internal fixation of an end in the test site of pretension lever 6 are connected, and the other end of pretension lever 6 is connected with afterburning back shaft 7, and pre-bearing up pulley 5 is installed on the afterburning back shaft 7, and pre-bearing up pulley 5 is connected with belt 22 contacts of gear mechanism; The increase and decrease of counterweight makes pretension load transmission shaft 8 produce certain moment of torsion by load lever 9, this moment of torsion is delivered on the pre-bearing up pulley 5 by pretension lever 6, afterburning back shaft 7 again, and it is moved up and down, thereby realize control to belt tension, make by the test bearing to keep constant load (moment), thereby compensation is because the test site temperature variation causes the load variations of belt drive system.In addition, disconnect under certain condition as the belt 22 of gear mechanism, governor motion moment is unbalance, and counterweight 15 tenesmus just spacing adjustment screw 17 can be held load lever 9, prevent the generation of accident.
Claims (3)
1. the high/low-temperature impact life testing device of a bearing special use is characterized in that comprising:
Three box structures: comprise heat-accumulating area, test site and cold-storage district three casees, be provided with the thermal-insulating sealing district between the inwall of three box structures and its outer wall; Wherein, the test site is in the middle layer, and the inwall of test site one side is installed gear mechanism, and this side is installed gear train and governor motion simultaneously; The top of test site is heat-accumulating area, and the heat-accumulating area rear side is installed the machine that heats; The following of test site is the cold-storage district, and the rear side in cold-storage district is installed refrigeration machine; Between test site and the heat-accumulating area, respectively be provided with two circulating air discharge orifices between test site and the cold-storage district, in each circulating air discharge orifice variable valve is installed, electric cabinet, display are installed in the side of three box structures;
Described gear train: comprise motor mounting plate (1), motor (10), driving pulley (11), negative pulley wheel (12), V-shape belt (13) and final drive shaft (14), wherein, motor (10) and coaxial the fixedlying connected of driving pulley (11), driving pulley (11) is connected with negative pulley wheel (12) by V-shape belt (13), negative pulley wheel (12) and coaxial the fixedlying connected of final drive shaft (14), final drive shaft (14) is installed on the sidewall of test site, by the bearing fixing on motor mounting plate (1) and the work box internal backplane (2);
Described gear mechanism: comprise work box internal backplane (2), set nut (3), main drive belt wheel (4), first adjusts slide block base (18), second adjusts slide block base (19), the 3rd adjusts slide block base (20), the 4th adjusts slide block base (21), belt (22), test bearing belt pulley assembly (23), wherein, main drive belt wheel (4) is fixed on the final drive shaft (14), fix first on the work box internal backplane (2) and adjust slide block base (18), second adjusts slide block base (19), the 3rd adjusts slide block base (20) and the 4th adjusts slide block base (21), each adjusts the slide block base identical test bearing of set nut (3) mount fixing structure belt pulley assembly (23), and second adjusts slide block base (19), the 3rd test bearing of adjusting on the slide block base (20) will intersect arranged in dislocation with belt pulley assembly (23); Belt (22) connects main drive belt wheel (4) and each test bearing belt pulley assembly (23);
Described governor motion: comprise counterweight (15), spacing adjustment plate (16), spacing adjustment screw (17), pre-bearing up pulley (5), pretension lever (6), afterburning back shaft (7), pretension load transmission shaft (8) and load lever (9), wherein, counterweight (15) is suspended on an end of load lever (9), the bottom of load lever (9) is fixed with safety feature, the other end of load lever (9) is fixed on an end of pretension load transmission shaft (8), pretension load transmission shaft (8) be positioned at final drive shaft (14) under, by the sidewall of the bearing fixing on motor mounting plate (1) and the work box internal backplane (2) in the test site; The other end of pretension load transmission shaft (8) and the internal fixation of an end in the test site of pretension lever (6) are connected, the other end of pretension lever (6) is connected with afterburning back shaft (7), afterburning back shaft (7) is gone up pre-bearing up pulley (5) is installed, and pre-bearing up pulley (5) is connected with belt (22) contact of gear mechanism.
2. the high/low-temperature impact life testing device of a kind of bearing special use according to claim 1, it is characterized in that described test bearing belt pulley assembly: comprise test belt pulley (24), round nut (25), packing ring (26), test bearing (27), axle (28), test is with belt pulley adjustment cover (29), wherein, the inner ring of test bearing (27) is fixed on the axle (28), test is fixed in on the belt pulley adjustment cover (29) in the outer ring, test with the external cylindrical surface installation test of belt pulley adjustment cover (29) with belt pulley (24), test bearing (27) inner ring outer face packing ring (26), set nut (3) and bolt are individually fixed in to be adjusted on the slide block base, and test bearing (27) outer face, outer ring is fixing with round nut (25).
3. the high/low-temperature impact life testing device of a kind of bearing special use according to claim 1, it is characterized in that described safety feature: comprise spacing adjustment plate (16) and spacing adjustment screw (17), wherein, on motor mounting plate (1), spacing adjustment screw (17) is installed on the spacing adjustment plate (16) by nut spacing adjustment plate (16) by screw retention.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100715697A CN100526834C (en) | 2007-10-09 | 2007-10-09 | High/low-temperature impact life testing device especially for bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100715697A CN100526834C (en) | 2007-10-09 | 2007-10-09 | High/low-temperature impact life testing device especially for bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101131339A true CN101131339A (en) | 2008-02-27 |
| CN100526834C CN100526834C (en) | 2009-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100715697A Expired - Fee Related CN100526834C (en) | 2007-10-09 | 2007-10-09 | High/low-temperature impact life testing device especially for bearing |
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| CN (1) | CN100526834C (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886978A (en) * | 2010-07-07 | 2010-11-17 | 四川大学 | Vacuum high/low temperature environmental simulation electromechanical transmission mechanism comprehensive performance experimental system |
| CN104285139A (en) * | 2012-04-24 | 2015-01-14 | Skf公司 | Bearing monitoring method and system |
| CN104535321A (en) * | 2014-12-23 | 2015-04-22 | 北京工商大学 | Device for testing fatigue life of flexible bearing |
| CN105136436A (en) * | 2015-07-29 | 2015-12-09 | 东风汽车股份有限公司 | Device and method for testing reliability of sealing ring of oil injector |
| CN106017930A (en) * | 2016-06-29 | 2016-10-12 | 宁波慈兴精密传动科技有限公司 | Bearing high-temperature and high-speed test device for automobile tensioning wheel |
| CN106840674A (en) * | 2017-02-28 | 2017-06-13 | 浙江大学 | Gear and synchronous belt type oscillating bearing experimental rig |
| CN106989831A (en) * | 2017-05-27 | 2017-07-28 | 中国航发湖南动力机械研究所 | A kind of rolling bearing Temperature Distribution on-line testing warning device and application method |
| CN108692905A (en) * | 2018-06-14 | 2018-10-23 | 明景泰 | A kind of angle impacts device |
| CN111337788A (en) * | 2020-05-21 | 2020-06-26 | 广东电网有限责任公司东莞供电局 | High-low temperature alternating test device and test method for electric power compound grease |
| CN112406484A (en) * | 2020-12-11 | 2021-02-26 | 重庆建安仪器有限责任公司 | Comprehensive protection type special vehicle |
| CN114608822A (en) * | 2022-01-18 | 2022-06-10 | 浙江辛子精工机械有限公司 | Bearing life test tool for automobile alternating current generator |
-
2007
- 2007-10-09 CN CNB2007100715697A patent/CN100526834C/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886978B (en) * | 2010-07-07 | 2011-10-05 | 四川大学 | Vacuum high/low temperature environmental simulation electromechanical transmission mechanism comprehensive performance experimental system |
| CN101886978A (en) * | 2010-07-07 | 2010-11-17 | 四川大学 | Vacuum high/low temperature environmental simulation electromechanical transmission mechanism comprehensive performance experimental system |
| CN104285139A (en) * | 2012-04-24 | 2015-01-14 | Skf公司 | Bearing monitoring method and system |
| CN104535321A (en) * | 2014-12-23 | 2015-04-22 | 北京工商大学 | Device for testing fatigue life of flexible bearing |
| CN105136436B (en) * | 2015-07-29 | 2018-01-16 | 东风汽车股份有限公司 | Device and method for testing reliability of sealing ring of oil injector |
| CN105136436A (en) * | 2015-07-29 | 2015-12-09 | 东风汽车股份有限公司 | Device and method for testing reliability of sealing ring of oil injector |
| CN106017930A (en) * | 2016-06-29 | 2016-10-12 | 宁波慈兴精密传动科技有限公司 | Bearing high-temperature and high-speed test device for automobile tensioning wheel |
| CN106840674A (en) * | 2017-02-28 | 2017-06-13 | 浙江大学 | Gear and synchronous belt type oscillating bearing experimental rig |
| CN106840674B (en) * | 2017-02-28 | 2023-09-26 | 浙江大学 | Gear and synchronous belt type joint bearing test device |
| CN106989831A (en) * | 2017-05-27 | 2017-07-28 | 中国航发湖南动力机械研究所 | A kind of rolling bearing Temperature Distribution on-line testing warning device and application method |
| CN106989831B (en) * | 2017-05-27 | 2019-05-24 | 中国航发湖南动力机械研究所 | A kind of rolling bearing Temperature Distribution on-line testing warning device and application method |
| CN108692905A (en) * | 2018-06-14 | 2018-10-23 | 明景泰 | A kind of angle impacts device |
| CN111337788A (en) * | 2020-05-21 | 2020-06-26 | 广东电网有限责任公司东莞供电局 | High-low temperature alternating test device and test method for electric power compound grease |
| CN112406484A (en) * | 2020-12-11 | 2021-02-26 | 重庆建安仪器有限责任公司 | Comprehensive protection type special vehicle |
| CN114608822A (en) * | 2022-01-18 | 2022-06-10 | 浙江辛子精工机械有限公司 | Bearing life test tool for automobile alternating current generator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100526834C (en) | 2009-08-12 |
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Owner name: MOS GROUP CO., LTD. Free format text: FORMER NAME: MOSHI GROUP CO., LTD., NINGBO CITY |
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Address after: 315201 Zhenhai Town, Zhejiang, Ningbo Co-patentee after: Zhejiang University Patentee after: MOS Group Corporation Limited Address before: 315201 Zhenhai Town, Zhejiang, Ningbo Co-patentee before: Zhejiang University Patentee before: Moshi Group Co., Ltd., Ningbo City |
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