CN101419121A - System and method for measuring and selecting drive gear installation distance adjusting shim of separated main gearbox assembly - Google Patents
System and method for measuring and selecting drive gear installation distance adjusting shim of separated main gearbox assembly Download PDFInfo
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- CN101419121A CN101419121A CNA2008102286510A CN200810228651A CN101419121A CN 101419121 A CN101419121 A CN 101419121A CN A2008102286510 A CNA2008102286510 A CN A2008102286510A CN 200810228651 A CN200810228651 A CN 200810228651A CN 101419121 A CN101419121 A CN 101419121A
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Abstract
The invention relates to a method and a system for selecting and measuring driving gear mounting distance adjusting shims of a driving gear pair and a driven gear pair in a core component, namely an up-and-down split-type main reducer assembly of an automobile driving bridge assembly. The selecting and measuring system comprises an online monitoring first detection station, a second detection station of a driving gear bearing pedestal subassembly, and an electronic control system, wherein the first detection station is a displacement sensing detection station of axial data of a main differential case and adopts a displacement station device which is shifted to an online follower fixture; the second detection station is a displacement sensing detection station of axial data of a driving gear inner bearing, a driving gear outer bearing and a driving gear bearing pedestal; and the electronic control system obtains corresponding data values respectively through acquisition and conversion of an axial data signal acquisition channel of the main differential case and an axial data signal acquisition channel of a driving gear bearing pedestal assembly, and obtains the thickness Ln of the driving gear mounting distance adjusting shims by calculation through a determined mathematic model. The technical proposal realizes online monitoring in a real sense, simultaneously suppresses interference of personal factors, reduces the measuring variation, and improves the measuring precision.
Description
Technical field
What the present invention relates to is core component in the automobile drive axle assembly--driving gear locating distance main in the split main gearbox assembly up and down, the passive tooth wheel set is adjusted the pad measuring and selecting method and is realized the system and device of this measuring and selecting method.
Background technology
Automobile drive axle assembly main body constitutes critical pieces such as including differential mechanism sub-unit, main gearbox assembly core component and semiaxis, axle housing, wheel hub and brake drum and detent and constitutes.The assembling quality of main gearbox assembly and differential mechanism sub-unit is the key project that influences automobile drive axle assembly product comprehensive quality.At present, to the master, the driving gear locating distance of passive tooth wheel set is adjusted gasket measuring and is selected also to stay on the technical merit of off-line apolegamy, especially split main gearbox assembly about, because its unique product structure characteristic, in assembling process, the driving gear locating distance is adjusted to be needed in the pad option program bevel housing, driving gear shaft bearing and corresponding axis bearing outer-ring carry out the relative dimensions measurement respectively after press-fiting constituent components, make assembly move the worker with measuring to intersect between the station press-fiting station, assembly line repeatedly, so very easily being collided with because of the surface to be installed of assembly potential failure mode occurs, and production efficiency is low.In addition, the too much participation of human factor usually causes the appearance of substandard product and the processing of must in time doing over again in the existing assembling work; Moreover existing off-line apolegamy technology, also can cause the driving gear that must pairing uses and driven gear can only move the worker respectively and to differential mechanism sub-unit assembly line and main gearbox assembly assembly line, implement to attach together, be prone to and be assemblied in that same main gearbox assembly interior driving gear, driven gear are loaded in mixture and the mounting technology problem that can not obtain the best contact region accuracy of mesh.
In sum, existing offline inspection and mounting technology means are difficult to guarantee automobile drive axle assembly assembly quality, and production efficiency is also comparatively low.
Summary of the invention
The goal of the invention of patented claim of the present invention is to provide a kind of and realizes that on assembly line online detection and survey select the drive gear installation distance adjusting shim of separated main gearbox assembly measuring and selecting system and the method for work, it has been got rid of human factor the influence of work has been selected in survey, and it is applicable to that more the automobile drive axle assembly assembling product line finishes online detection, realizes assembly standardization assembling.
The drive gear installation distance adjusting shim of separated main gearbox assembly measuring and selecting system technical scheme that patented claim of the present invention provides, its major technique content is: a kind of drive gear installation distance adjusting shim of separated main gearbox assembly measuring and selecting system, and it comprises that first of online detection detects second of station, driving gear shaft bearing sub-unit and detects station and electronic control system; First detects station is provided with and this station body is moved the worker puts to the frock of moving of the online pallet of automobile drive axle assembly assembling product line, and the lower platform of station body is provided with and the fixing locating ring of bevel housing upper end through hole suit; Station body upper mounting plate is provided with the guiding elevating mechanism of horizontal mandrel, described horizontal mandrel two ends are fixed with the left and right reference measurement piece suit of the left and right bearing of simulation differential mechanism, the guiding elevating mechanism includes the interlock seat that rigidly fixes the horizontal mandrel of clamping, the interlock seat is by the driving of linear drives parts, along left and right line slideway sliding and running, interlock seat and arranged on left and right sides is arranged with the left and right displacement transducer of inductive displacement, and two displacement transducers are electrically connected with the axial data-signal acquisition channel of the two-way bevel housing of electronic control system respectively;
Second detects station: the mandrel of simulation driving gear is supported on the frame bottom plate by the bearing vertical rotation, with the base plate bearing seat driving gear shaft bearing measuring unit that has been coaxially set, mandrel connects with motor through rotation drive machine, connect the drive mandrel and be provided with the mandrel elevating mechanism, be provided with the displacement transducer of induction mandrel axial location in the mandrel elevating mechanism; Mandrel top, be provided with vertical pressure-tight mechanism with the mandrel coaxial cable, vertical pressure-tight mechanism acts on pressure on the outer bearing inner ring of driving gear shaft bearing component through connecting gland; Its displacement transducer is electrically connected with the axial data-signal acquisition channel of the bearing seat component of the driving gear of electronic control system.
Form realization drive gear installation distance adjusting shim of separated main gearbox assembly measuring and selecting method of the present invention based on above-mentioned measuring and selecting system, its method comprises:
First detects the required I type calibrating block of station: make I type calibrating block by the driving gear locating distance theoretical value of each model split main gearbox assembly, its underpart is and the fixing installation port of the first detection station locating ring suit, top is provided with the semicircle axis hole groove that cooperates with the left and right reference measurement piece of simulating the left and right bearing of differential mechanism, with driven gear axis and bevel housing upper end normal pitch value I type calibrating block upper end and lower end surface spacing is set;
First detects the demarcation of station and detect operation: first detects station moves the worker to the pallet position, the installation end muzzle dress of I type calibrating block is fixed on first and detects on the locating ring of station, the semicircle axis hole groove that the horizontal mandrel of guiding elevating mechanism drive interlock seat and clamping thereof and the left and right reference measurement piece at mandrel two ends fall within I type calibrating block cooperates, gather left and right displacement transducer induced signal respectively by the axial data-signal acquisition channel of the bevel housing of electronic control system, and conversion, calculate mean value Cs1b, demarcate and store this calibration value; This station body lower platform locating ring is fixed with the bevel housing upper end through hole suit that is clamped in pallet, the horizontal mandrel of the left and right reference measurement piece of two ends suit closely cooperates, makes the bevel housing upper surface closely to contact with locating ring by differential left, the right bearing that the guiding elevating mechanism falls into bevel housing in the hole, gather the left and right displacement transducer induced signal of this state respectively by the axial data-signal acquisition channel of the bevel housing of electronic control system, and change, calculate mean value Cs1;
Second detects the required II type calibrating block of station: the II type calibrating block that is made into the mandrel sleeve pipe with the driving gear inner bearing inner face of driving gear shaft bearing sub-unit in each model split main gearbox assembly to the normal pitch value of bearing seat upper surface;
Second detects the demarcation of station and detects operation: II type calibrating block is set in mandrel, vertical pressure-tight mechanism is descending, the inner table top and the driving gear shaft bearing measuring unit upper surface of II type calibrating block are closely cooperated, the mandrel elevating mechanism promotes mandrel, mandrel abutting end platform and II type calibrating block 62 inner faces are closely cooperated, gather displacement transducer induced signal under this demarcation state by the axial data-signal acquisition channel of the bearing seat component of electronic control system driving gear, and the value of being converted to Cs2b, demarcate and store this calibration value; Driving gear shaft bearing component is sleeved on mandrel, place on the driving gear shaft bearing measuring unit, vertical pressure-tight mechanism is descending, the driving gear outer bearing is applied axial load, inner platform of driving gear shaft bearing and driving gear shaft bearing measuring unit upper surface are closely cooperated, promote mandrel by the mandrel elevating mechanism, mandrel abutting end platform and driving gear inner bearing inner ring end face are closely cooperated, start in mandrel and the driving gear, outer bearing slowly runs and eliminates the axial displacement of bearing, gathers displacement transducer induced signal and the value of being converted to Cs2 under this state by electronic control system;
Obtain the driving gear locating distance by following mathematical model at last and adjust pad value Ln, its mathematical model is: Ln=(Cs2-Cs2b)-(Cs1-Cs1b)+Zp,
Zp wherein is that master, passive tooth wheel set actual installation are apart from deviate.
Drive gear installation distance adjusting shim of separated main gearbox assembly measuring and selecting system that patented claim of the present invention provides and method and technology scheme, gathering the first axial data of bevel housing and second that detect station simultaneously by its electronic control system detects in the driving gear of station, outer bearing and the axial related data of driving gear shaft bearing, draw driving gear locating distance adjustment pad one-tenth-value thickness 1/10 thereby detect automatically, because the technical program has been avoided the interference of human factor, reduced the measurement variation, improved measuring accuracy, particularly adopted as the underslung worker's of moving station structure design, realized the technical purpose of the online survey choosing of real meaning, for realizing that the product key project meets product technology and requires enforcement product quality indicator Comprehensive Control purpose to create condition.The technical program is to become the driving gear locating distance that is suitable for as the automobile drive axle assembly assembling product line to adjust the online survey screening device of pad, makes the whole piece assembly line realize the technical purpose of assembly standardization assembling.
Description of drawings
Fig. 1 and Fig. 2 are respectively and adopt the general assembly structural drawing of two kinds of automobile drive axle assemblies of split main gearbox assembly structure up and down
Fig. 3 selects schematic diagram for the survey that the driving gear locating distance of this split main gearbox assembly is adjusted the pad measuring and selecting method
Fig. 4 is the station structure synoptic diagram that the driving gear locating distance of this split main gearbox assembly is adjusted the pad measuring and selecting system
Fig. 5 and Fig. 6 are respectively the sectional structure chart of I type calibrating block, II type calibrating block
Fig. 7 is the sectional structure enlarged drawing that first of Fig. 4 detects station
Fig. 8 is the sectional structure enlarged drawing that second of Fig. 4 detects station
Fig. 9 is the system architecture diagram of electronic control system.
Embodiment
The driving gear locating distance of this split main gearbox assembly is adjusted the pad measuring and selecting system, mainly detect station by first, detect second of driving gear shaft bearing sub-unit and detect station, adjustment pad value to be installed rechecks station and electronic control system is formed, and its electronic control system is by the control CPU element, gather the axial data-signal acquisition channel of the bevel housing signal sampling channel of two displacement transducers of the first detection station, first detects the guiding elevating mechanism execution command output channel of station, the axial data-signal acquisition channel of bearing seat component of the driving gear of the displacement transducer of the collection second detection station, second detects the vertical pressure-tight mechanism execution command output channel of station, mandrel elevating mechanism execution command output channel, motor execution command output channel.
As shown in Figure 7, first detects station is provided with and this station body is moved the worker moves frock to the suspension type of the online pallet of automobile drive axle assembly assembling product line and put, the upper mounting plate 14 of its station body 1 is hung with coaster 12 by cable wire 10, evener 11, moves the worker to online pallet 20 station places along square guide rail 13.The lower platform 15 of station body 1 is provided with and the fixing locating ring 21 of bevel housing upper end through hole suit; The upper mounting plate 14 of station body 1 is provided with the guiding elevating mechanism of horizontal mandrel 2, and described horizontal mandrel 2 two ends are set with the left and right reference measurement piece 22,23 of the left and right bearing of simulation differential mechanism by inside and outside set nut positioning locking; The guiding elevating mechanism comprises hoist cylinder 24, rigidly fix the interlock seat 25 of the horizontal mandrel 2 of clamping, interlock seat 25 is fixedly set on hoist cylinder 24 piston rods, by hoist cylinder 24 linear drives, left side by its two symmetry, right slide block 26,27 along a left side, right line slideway 28,29 sliding and runnings, interlock seat 25 symmetria bilateralis are provided with the induction touch panel 30 parallel with the horizontal mandrel of clamping 2,31, each the induction touch panel respectively with a displacement transducer 32 that is fixed in the station body, 33 inductions are equipped with, two displacement transducers 32,33 are electrically connected with the axial data-signal acquisition channel of the two-way bevel housing of electronic control system respectively, and the axial data-signal acquisition channel of its bevel housing is by left dislocation sensor or right displacement transducer, A/D converter and COM port are electrically connected with the industrial control computer of central authorities.
Second detects station: the mandrel 4 of simulation driving gear is supported on the frame bottom plate 5 by the bearing vertical rotation, with the base plate bearing seat 50 driving gear shaft bearing measuring unit 51 that has been coaxially set, driving gear shaft bearing measuring unit 51 is fixedly connected with base plate bearing seat 50 butt end flanges, mandrel 4 lower ends are provided with the flute profile tape handler that connects with drive of motor, its mandrel orienting sleeve 40 slides with mandrel 4 axially directed key guiding and is provided with, and mandrel orienting sleeve 40 is cooperated by the bearing rotational support with base plate bearing seat 50; Connect and drive mandrel 4 liftings and be provided with the mandrel elevating mechanism, mandrel 4 lower ends are set with the guiding interlock frame that is made of the guide pillar 43 between upper mounted plate 41, bottom plate 42 and two fixed heads 41,42, guiding interlock frame drives oil cylinder 48 with lifting and is connected, respond in the bottom plate 42 of mandrel guiding interlock frame and axially be provided with displacement transducer 44 in the position, displacement transducer 44 is electrically connected with the axial data-signal acquisition channel of the bearing seat component of the driving gear of electronic control system; The support body of mandrel 4 tops is provided with coaxial vertical pressure-tight mechanism in mandrel 4, and the driving oil cylinder 45 of vertical pressure-tight mechanism is through line slideway guiding driven in rotation pressure head 46, act on pressure on the outer bearing inner ring of driving gear shaft bearing component through connecting gland 47.
Form the drive gear installation distance adjusting shim of separated main gearbox assembly measuring and selecting method of realizing of the present invention by said system, its method is:
First detects the required I type calibrating block of station, as shown in Figure 5, make I type calibrating block by the driving gear locating distance theoretical value of split main gearbox assembly about each model, its underpart is and the fixing installation port 60 of first detection station locating ring 21 suits, top is provided with the semicircle axis hole groove 61 that cooperates with the left and right reference measurement piece 22,23 of simulating the left and right bearing of differential mechanism, with bevel housing upper end normal pitch value Ls1b I type calibrating block upper end and lower end surface spacing is set with driven gear axis 6;
First detects the demarcation of station and detect operation: first detects station moves the worker to the pallet position, installation port 60 suits of I type calibrating block are fixed on first and detect on the locating ring 21 of station, hoist cylinder 24 drives interlock seat 25 and the horizontal mandrel 2 of clamping and the left side at mandrel two ends, right reference measurement piece 22, the 23 semicircle axis hole grooves 61 that fall within I type calibrating block cooperate, gather a left side respectively by the axial data-signal acquisition channel of the bevel housing of electronic control system again, right displacement transducer induced signal and conversion, calculate mean value Cs1b, demarcate and store this calibration value; The bevel housing 70 upper end through hole suits of this station body lower platform 21 locating rings and pallet 20 clampings are fixed, a fastening suit left side, two ends, right reference measurement piece 22,23 horizontal mandrel 2 drives the descending differential left that falls into bevel housing 70 by hoist cylinder 24, right bearing closely cooperates in the hole, and bevel housing 70 upper surfaces are closely contacted with locating ring 21, open a left side that bevel housing axial data-signal acquisition channel respectively gather this state by electronic control system this moment, right displacement transducer 32,33 induced signal, and conversion, calculate mean value Cs1;
Second detects the required II type calibrating block 62 of station, as shown in Figure 6, be made into the II type calibrating block 62 of mandrel sleeve pipe to the normal pitch value Ls2b of bearing seat upper surface with the driving gear inner bearing inner face of driving gear shaft bearing sub-unit in the split main gearbox assembly about each model;
Second detects the demarcation of station and detects operation: II type calibrating block 62 is set in mandrel 4, the driving oil cylinder 45 of vertical pressure-tight mechanism is descending, the inner platform and driving gear shaft bearing measuring unit 51 upper surfaces of II type calibrating block 62 are closely cooperated, mandrel 4 drives under the promotion of oil cylinder 48 in lifting, mandrel 4 abutting end platforms 49 are closely cooperated with II type calibrating block 62 inner faces, the axial data-signal acquisition channel of bearing seat component of opening driving gear by electronic control system again this moment is gathered the displacement transducer induced signal under this demarcation state, and the value of being converted to Cs2b, demarcate and store this calibration value; The actual survey chosen, driving gear inner bearing inner ring cover installs on the mandrel 4, in driving gear shaft bearing and driving gear, the component that the outer bearing outer ring constitutes is arranged on driving gear shaft bearing measuring unit 51, again driving gear outer bearing inner ring cover is installed on the mandrel, the driving oil cylinder 45 driven in rotation pressure heads 46 of vertical pressure-tight mechanism are descending, the driving gear outer bearing is applied axial load, inner platform in driving gear shaft bearing upper surface and driving gear shaft bearing measuring unit 51 are closely cooperated, drive oil cylinder 48 by the mandrel lifting and promote mandrel 4, mandrel abutting end platform 49 and driving gear inner bearing inner ring end face are closely cooperated, starter motor, drive in mandrel 4 and the driving gear, outer bearing slowly runs and eliminates the axial displacement of bearing, gathered the induced signal of the displacement transducer 44 under this state this moment again by electronic control system, and the value of being converted to Cs2.
Obtain the driving gear locating distance by following mathematical model at last and adjust pad one-tenth-value thickness 1/10 Ln, its mathematical model is: Ln=(Cs2-Cs2b)-(Cs1-Cs1b)+Zp, Zp wherein is that master, passive tooth wheel set actual installation are apart from deviate.
Claims (2)
1, a kind of drive gear installation distance adjusting shim of separated main gearbox assembly measuring and selecting system is characterized in that it comprises that first of online detection detects second of station, driving gear shaft bearing sub-unit and detects station and electronic control system; First detects station is provided with and this station body is moved the worker puts to the frock of moving of the online pallet of automobile drive axle assembly assembling product line, and the lower platform of station body (15) is provided with and the fixing locating ring (21) of bevel housing upper end through hole suit; Station body upper mounting plate (14) is provided with the guiding elevating mechanism of horizontal mandrel, described horizontal mandrel two ends and simulation differential left, the left side of right bearing, right reference measurement piece (22,23) suit is fixed, the guiding elevating mechanism includes the interlock seat (25) that rigidly fixes the horizontal mandrel of clamping, the interlock seat is driven by the linear drives parts, along a left side, right line slideway sliding and running, an interlock seat left side, right symmetria bilateralis is provided with the left side of inductive displacement, right displacement transducer (32,33), two displacement transducers are electrically connected with the axial data-signal acquisition channel of the two-way bevel housing of electronic control system respectively;
Second detects station: the mandrel (4) of simulation driving gear is supported on the frame bottom plate by the bearing vertical rotation, with base plate bearing seat (50) the driving gear shaft bearing measuring unit (51) that has been coaxially set, mandrel connects with motor through rotation drive machine, connect the drive mandrel and be provided with the mandrel elevating mechanism, be provided with the displacement transducer (44) of induction mandrel axial location in the mandrel elevating mechanism; Mandrel top, be provided with vertical pressure-tight mechanism with the mandrel coaxial cable, vertical pressure-tight mechanism acts on pressure on the outer bearing inner ring of driving gear shaft bearing component through connecting gland (47); Its displacement transducer (44) is electrically connected with the axial data-signal acquisition channel of the bearing seat component of the driving gear of electronic control system.
2,, it is characterized in that its method comprises based on the drive gear installation distance adjusting shim of separated main gearbox assembly measuring and selecting method of the described measuring and selecting system of claim 1:
First detects the required I type calibrating block of station: make I type calibrating block by the driving gear locating distance theoretical value of each model split main gearbox assembly, its underpart is and the fixing installation port of the first detection station locating ring suit, top is provided with the semicircle axis hole groove that cooperates with the left and right reference measurement piece of simulating the left and right bearing of differential mechanism, with driven gear axis and bevel housing upper end normal pitch value I type calibrating block upper end and lower end surface spacing is set;
First detects the demarcation of station and detect operation: first detects station moves the worker to the pallet position, the installation end muzzle dress of I type calibrating block is fixed on first and detects on the locating ring of station, the semicircle axis hole groove that the horizontal mandrel of guiding elevating mechanism drive interlock seat and clamping thereof and the left and right reference measurement piece at mandrel two ends fall within I type calibrating block cooperates, gather left and right displacement transducer induced signal respectively by the axial data-signal acquisition channel of the bevel housing of electronic control system, and conversion, calculate mean value Cs1b, demarcate and store this calibration value; This station body lower platform locating ring is fixed with the bevel housing upper end through hole suit that is clamped in pallet, the horizontal mandrel of the left and right reference measurement piece of two ends suit closely cooperates, makes the bevel housing upper surface closely to contact with locating ring by differential left, the right bearing that the guiding elevating mechanism falls into bevel housing in the hole, gather the left and right displacement transducer induced signal of this state respectively by the axial data-signal acquisition channel of the bevel housing of electronic control system, and change, calculate mean value Cs1;
Second detects the required II type calibrating block of station: the II type calibrating block that is made into the mandrel sleeve pipe with the driving gear inner bearing inner face of driving gear shaft bearing sub-unit in each model split main gearbox assembly to the normal pitch value of bearing seat upper surface;
Second detects the demarcation of station and detects operation: II type calibrating block is set in mandrel, vertical pressure-tight mechanism is descending, the inner table top and the driving gear shaft bearing measuring unit upper surface of II type calibrating block are closely cooperated, the mandrel elevating mechanism promotes mandrel, mandrel abutting end platform and II type calibrating block 62 inner faces are closely cooperated, gather displacement transducer induced signal under this demarcation state by the axial data-signal acquisition channel of the bearing seat component of electronic control system driving gear, and the value of being converted to Cs2b, demarcate and store this calibration value; Driving gear shaft bearing component is sleeved on mandrel, place on the driving gear shaft bearing measuring unit, vertical pressure-tight mechanism is descending, the driving gear outer bearing is applied axial load, inner platform of driving gear shaft bearing and driving gear shaft bearing measuring unit upper surface are closely cooperated, promote mandrel by the mandrel elevating mechanism, mandrel abutting end platform and driving gear inner bearing inner ring end face are closely cooperated, start in mandrel and the driving gear, outer bearing slowly runs and eliminates the axial displacement of bearing, gathers displacement transducer induced signal and the value of being converted to Cs2 under this state by electronic control system;
Obtain the driving gear locating distance by following mathematical model at last and adjust pad value Ln, its mathematical model is: Ln=(Cs2-Cs2b)-(Cs1-Cs1b)+Zp, Zp wherein is that master, passive tooth wheel set actual installation are apart from deviate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810228651A CN100590408C (en) | 2008-11-07 | 2008-11-07 | System and method for testing and selecting driving gear mounting distance adjusting shim for split type main reducing gear assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810228651A CN100590408C (en) | 2008-11-07 | 2008-11-07 | System and method for testing and selecting driving gear mounting distance adjusting shim for split type main reducing gear assembly |
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| CN101419121A true CN101419121A (en) | 2009-04-29 |
| CN100590408C CN100590408C (en) | 2010-02-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021157A (en) * | 2015-06-03 | 2015-11-04 | 机科发展科技股份有限公司 | A common-rail gear pump assembly detection system |
| CN110553606A (en) * | 2019-08-26 | 2019-12-10 | 广州供电局有限公司 | method, device and equipment for monitoring horizontal axis difference of supporting type tubular bus of transformer substation |
| CN112555396A (en) * | 2020-12-10 | 2021-03-26 | 伯朗特机器人股份有限公司 | Bevel gear clearance adjusting method |
-
2008
- 2008-11-07 CN CN200810228651A patent/CN100590408C/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021157A (en) * | 2015-06-03 | 2015-11-04 | 机科发展科技股份有限公司 | A common-rail gear pump assembly detection system |
| CN110553606A (en) * | 2019-08-26 | 2019-12-10 | 广州供电局有限公司 | method, device and equipment for monitoring horizontal axis difference of supporting type tubular bus of transformer substation |
| CN112555396A (en) * | 2020-12-10 | 2021-03-26 | 伯朗特机器人股份有限公司 | Bevel gear clearance adjusting method |
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| Publication number | Publication date |
|---|---|
| CN100590408C (en) | 2010-02-17 |
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