CN105716516A - Automobile transmission shaft length detection device with elastic element - Google Patents
Automobile transmission shaft length detection device with elastic element Download PDFInfo
- Publication number
- CN105716516A CN105716516A CN201610169832.5A CN201610169832A CN105716516A CN 105716516 A CN105716516 A CN 105716516A CN 201610169832 A CN201610169832 A CN 201610169832A CN 105716516 A CN105716516 A CN 105716516A
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- Prior art keywords
- drive shaft
- truck drive
- slide rail
- fixed
- portable plate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
Abstract
The invention discloses an automobile transmission shaft length detection device with an elastic element. The automobile transmission shaft length detection device comprises a base, a sliding rail, a fixed plate, a movable plate, cylinder clamping devices, the elastic element, a motor driving device, a force sensor and a supporting device. The sliding rail is fixed to the upper portion of the base and provided with the fixed plate and the movable plate, the fixed plate is fixed to one end of the sliding rail, the bottom of the movable plate is provided with a sliding block matched with the sliding rail, and the motor driving device is fixed to the sliding rail. The elastic element is fixed to the bottom of the movable plate, one end of the force sensor is connected with a motor head connected with the motor driving device, and the other end of the force sensor is connected with the elastic element. The upper portion of the fixed plate and the upper portion of the movable plate are provided with the cylinder clamping devices for clamping the two ends of a to-be-measured automobile transmission shaft, and the supporting device is arranged on the sliding rail between the fixed plate and the movable plate. The problem that an ordinary motor cannot guarantee force stability in the automobile transmission shaft length detection process is solved, the accuracy of measurement results is improved, and the production cost is reduced.
Description
Technical field
The present invention relates to mechanical detection equipment technical field, more specifically, particularly relate to the truck drive shaft device for detecting length that a kind of band has elastic component.
Background technology
Truck drive shaft be universal driving device power transmission shaft in can transmit the axle of power, it is the rotary body of a high rotating speed, few supporting, truck drive shaft is the most important parts transmitting power in car transmissions, the power of electromotor is passed to wheel by it together with change speed gear box, drive axle, makes automobile produce driving force.
Truck drive shaft is usually made up of central siphon, telescopic and universal joint, and telescopic is arranged on the two ends of central siphon, and two telescopics connect the two ends of central siphon respectively through two universal joints.Telescopic can be automatically adjusted the distance change between variator and drive axle, and universal joint is for ensureing that transmission output shaft and drive axle power shaft connect the change of axis angle, and realizes the constant velocity tramsmission of two axles；Central siphon has one and is connected axle bowl with the junction of universal joint, is provided with a back-up ring in axle bowl, and universal joint is blocked by back-up ring, makes universal joint and central siphon link together.
Truck drive shaft is before use, whether it qualified must be detected, the very important detection project of one of which is exactly the length detecting truck drive shaft under a certain pressure, and the required precision of this length is very high, and can be directly connected to truck drive shaft normally use.Owing to the two ends of truck drive shaft are provided with universal joint, generally cannot ensure that the axle center of the central siphon of truck drive shaft and two telescopics is on same straight line, therefore how to feel relieved, namely ensure that the pipe of truck drive shaft and the axle center of telescopic are the design difficulties of the present invention on same straight line, it does not have the length value recorded when centering is inaccurate.Simultaneously when centering, measure truck drive shaft in length process and can not be subject to excessive instantaneous pressure.In the process that truck drive shaft is carried out linear measure longimetry, typically require and under the effect of constant pressure, truck drive shaft is measured, and when applying this power, the excessive meeting of instantaneous force value directly produces bending at universal joint place, the axle center causing central siphon and telescopic offsets, thus affecting centering effect, causing that measurement result is inaccurate, therefore how to ensure that the force value when measuring also is a difficult point of the present invention not over preset value.
Meanwhile, in the process of truck drive shaft length detection, if using motor that truck drive shaft is compressed, although ensure that constant pressure, but cost is very high；And in the detection process of vehicle transmission shaft length, the stability requirement of pressure is very high, force value can not fluctuate, and common electric machine is difficulty with stablizing of power.
Summary of the invention
It is an object of the invention to solve common electric machine in the process of existing truck drive shaft length detection and cannot ensure the stable shortcoming of power, it is proposed that the truck drive shaft device for detecting length that a kind of band has elastic component.
The technical scheme is that and be achieved in that: truck drive shaft device for detecting length that a kind of band has elastic component, including base, slide rail, fixing plate, portable plate, cylinder clamping device, flexible member, motor driver, force transducer and a support arrangement, described slide rail is fixed on above base, described slide rail arranges fixing plate and portable plate, described fixing plate is fixed on one end of slide rail, the sliding shoe matched with described slide rail it is provided with bottom portable plate, described motor driver is fixed on described slide rail, the bottom of described portable plate is fixed with flexible member, one end of described force transducer connects the motor head of motor driver, the other end connects described flexible member, portable plate is driven to move on described slide rail by described flexible member during the motion of described motor driver；Being equipped with the cylinder clamping device for clamping truck drive shaft two ends to be measured above described fixing plate and portable plate, described support arrangement is arranged on the slide rail between fixing plate and portable plate, and described support arrangement is for supporting the central siphon in the middle part of truck drive shaft to be measured；Described postive stop baffle is provided with two, is separately positioned on the upper of described fixing plate and portable plate, and two postive stop baffles are for carrying out spacing to the two ends of truck drive shaft to be measured；Base below described slide rail is additionally provided with the magnetic railings ruler for measuring vehicle transmission shaft length to be measured.
Further, described flexible member is elastic cylinder.
Further, described motor driver includes motor, shaft coupling, ball-screw and movable block, described motor connects one end of ball-screw by shaft coupling, described movable block is provided with the screwed hole matched with described ball-screw, described movable block connects described flexible member, driving described movable block rectilinear motion by described ball-screw when described motor rotates, movable block drives portable plate along slide rail rectilinear motion by described flexible member.
Further, described cylinder clamping device includes driving cylinder and fixture, described fixture includes fixed chuck and active chuck, fixed chuck is fixed on fixing plate or portable plate, active chuck is fixed on the piston rod end driving cylinder, drives cylinder to drive described active chuck to move to fixed chuck direction.
Further, the V-shaped design of contact surface of described active chuck and truck drive shaft to be measured.
Further, described support arrangement includes gripper shoe, two spring bearings and two bearing sliders, the T-shaped chute being perpendicular to slide rail direction is had above described gripper shoe, two spring bearings are separately fixed on two bearing sliders, two bearing sliders are arranged in described T-shaped chute and can along described T-shaped chute rectilinear motions, being equipped with hole, location on two bearing sliders, two bearing sliders are fixed in described gripper shoe by the bolt matched with hole, described location.
Further, described portable plate is also connected with for manual adjustments portable plate wind of position on slide rail.
The beneficial effects of the present invention is:
1, present configuration is simply compact, and production cost is low, and it is little to take up room, it is possible to realize the linear measure longimetry of truck drive shaft, and certainty of measurement is high, will not be subject to the impact of automobile driving shaft bending.
2, the present invention utilizes the power that motor is provided by flexible member to be controlled, it is ensured that the stability of power, improves the accuracy of measurement, and greatly reduces production cost.
3, the present invention is in the linear measure longimetry process of truck drive shaft, first truck drive shaft to be measured is elongated, ensure the axle center of the central siphon of truck drive shaft to be measured and telescopic on the same line, impose the pressure consistent with axis direction again, this process is forced stretched by the truck drive shaft to be measured being likely to bending, the accuracy of measurement result, on same straight line, is improved in the central siphon of guarantee truck drive shaft and the axle center of telescopic.
4, the present invention utilizes driving cylinder to realize the centering to truck drive shaft and clamping simultaneously, the two gap edge needed is very big, and same driving cylinder generally cannot realize loading two power varied in size under normal circumstances, the present invention utilizes and drives the venthole of cylinder to carry out air inlet and giving vent to anger respectively to realize changing the force value that same driving cylinder exports, save equipment occupation space, reduce the cost of equipment.
5, the whole measurement apparatus of the present invention is arranged on slide rail, by the fixing distance between plate and portable plate of wind manual adjustments, it is possible to meet the detection of different size truck drive shaft.
6, the two ends driving cylinder to clamp truck drive shaft with less power are first adopted when the present invention operates, realize the centering of truck drive shaft, two postive stop baffle compression truck drive shafts are driven again through stepping electricity, when reaching the force value set, motor continues to move through the balance of flexible member retentivity, the length of truck drive shaft is measured after force value a period of time that force transducer keeps constant, improve the accuracy of measurement result, avoid in measurement process because truck drive shaft to be measured press-bending is caused the inaccurate problem of measurement result by bigger power simultaneously.
7, the middle part of truck drive shaft is supported by the present invention by a support arrangement, adopt and first clamp two ends again to the method being supported in the middle part of power transmission shaft, when the truck drive shaft of same batch of different size is detected, when only a support arrangement need to be adjusted when detecting first truck drive shaft, the detection of the truck drive shaft of this batch of same specification, facilitates detection process.
8, the present invention adopts magnetic railings ruler to carry out measurement of length and can effectively prevent the external interference impact on measurement effect, improves the accuracy of measurement.
9, in the process of the actual measurement of truck drive shaft, the datum level of measurement generally cannot be determined in the two ends of truck drive shaft；And the present invention by the two ends of truck drive shaft against two pieces of postive stop baffles, the face of postive stop baffle and two end contacts of truck drive shaft is set as two datum levels, magnetic railings ruler is actual, and what measure is the distance of two datum levels, and it is convenient to measure, and greatly improves the accuracy of measurement.
10, the present invention arranges elastic cylinder between motor driver and portable plate, constant force is controlled by elastic cylinder, it is simple to operate, motor only need to carry out rectilinear motion, the constant of its power is realized by elastic cylinder, adjusted the size of constant force by air pressure, reduce the positioning accuracy request of motor.
11, the force transducer of the present invention is arranged between motor driver and elastic cylinder, is prevented effectively from when force transducer is directly installed between fixing seat and base and is deformed, thus the problem that certainty of measurement is produced impact；Force transducer is arranged between motor driver and elastic cylinder, even if force transducer produces the precision that deformation is measured without impact, improves the accuracy of measurement result.
Accompanying drawing explanation
Below in conjunction with the embodiment in accompanying drawing, the present invention is described in further detail, but is not intended that any limitation of the invention.
Fig. 1 is the structural representation of truck drive shaft of the present invention.
Fig. 2 is the axonometric drawing of the truck drive shaft device for detecting length that a kind of band of the present invention has elastic component.
Fig. 3 is the upward view of the truck drive shaft device for detecting length that a kind of band of the present invention has elastic component.
In figure, 1-base, 2-slide rail, 3-fix plate, 4-portable plate, 5-postive stop baffle, 6-sliding shoe, 7-driving cylinder, 8-fixed chuck, 9-active chuck, 10-motor, 11-truck drive shaft to be measured, 12-fixing slide block, 13-force transducer, 14-postive stop baffle, 15-motor mounting plate, 16-gripper shoe, 17-spring bearing, 18-bearing slider, 19-air inlet, 20-venthole, 21-flexible member, 22-ball-screw.
Detailed description of the invention
Consult shown in Fig. 1-Fig. 3, the truck drive shaft device for detecting length that a kind of band of the present invention has elastic component, including base 1, slide rail 2, fixing plate 3, portable plate 4, cylinder clamping device, flexible member 21, motor driver, force transducer 13 and a support arrangement, described slide rail 2 is fixed on above base 1, described slide rail 2 arranges fixing plate 3 and portable plate 4, described fixing plate 3 is fixed on one end of slide rail 2, the sliding shoe 6 matched with described slide rail 2 it is provided with bottom portable plate 4, described motor driver is fixed on described slide rail 2, the bottom of described portable plate 4 is fixed with flexible member 21, one end of described force transducer 13 connects the motor head of motor driver, the other end connects described flexible member 21, portable plate 4 is driven to move on described slide rail 2 by described flexible member 21 during the motion of described motor driver；The cylinder clamping device for clamping truck drive shaft 11 two ends to be measured it is equipped with above described fixing plate 3 and portable plate 4, described support arrangement is arranged on the slide rail 2 between fixing plate 3 and portable plate 4, and described support arrangement is for supporting the central siphon in the middle part of truck drive shaft 11 to be measured；Described postive stop baffle 14 is provided with two, is separately positioned on the upper of described fixing plate 3 and portable plate 4, and two postive stop baffles 14 are for carrying out spacing to the two ends of truck drive shaft 11 to be measured；Base 1 below described slide rail 2 is additionally provided with the magnetic railings ruler for measuring truck drive shaft 11 length to be measured.
Described flexible member 21 is elastic cylinder.
Described motor driver includes motor 10, shaft coupling, ball-screw 22 and movable block 12, described motor 10 connects one end of ball-screw 22 by shaft coupling, described movable block 12 is provided with the screwed hole matched with described ball-screw 22, described movable block 12 connects described flexible member 21, driving described movable block 12 rectilinear motion by described ball-screw 22 when described motor 10 rotates, movable block 12 drives portable plate 4 along slide rail 2 rectilinear motion by described flexible member 21.Motor 10 is fixed on slide rail 2 by motor mounting plate 15.
Described cylinder clamping device includes driving cylinder 7 and fixture, described fixture includes fixed chuck 8 and active chuck 9, fixed chuck 8 is fixed on fixing plate 3 or portable plate 4, active chuck 9 is fixed on the piston rod end driving cylinder 7, drives cylinder 7 to drive described active chuck 9 to move to fixed chuck 8 direction.
The V-shaped design of contact surface of described active chuck 9 and truck drive shaft 11 to be measured.
Described support arrangement includes 16, two spring bearings 17 of gripper shoe and two bearing sliders 18, the T-shaped chute being perpendicular to slide rail direction is had above described gripper shoe 16, two spring bearings 17 are separately fixed on two bearing sliders 18, two bearing sliders 18 are arranged in described T-shaped chute and can along described T-shaped chute rectilinear motions, being equipped with hole, location on two bearing sliders 18, two bearing sliders 18 are fixed in described gripper shoe 16 by the bolt matched with hole, described location.
Described portable plate 4 is also connected with for manual adjustments portable plate 4 wind of position on slide rail 2.
The method using this measurement device vehicle transmission shaft length is as follows:
(1) wind is used to regulate portable plate 4 to suitable position, put into standard component, standard component is the stiff shaft identical with the central siphon diameter of truck drive shaft 11 to be measured, the two ends of standard component are respectively put in the fixture of two cylinder clamping device front ends, air inlet in two air inlets 19 driving cylinder 7, two drive the two ends that cylinder 7 drives fixture to clamping standard component；Bearing slider 18 below mobile spring bearing 17, regulate the position of spring bearing 17, make two pairs of spring bearings 17 against standard component locking positioning bolt, complete the location of spring bearing 17, now stop driving the supply of cylinder 7, fixture restPoses, and takes standard component away, completes the spring bearing 17 before detection and positions work；
(2) truck drive shaft 11 to be measured is put into, air inlet in two air inlets 19 driving cylinder 7, two drive the two ends that cylinder 7 drives two clamp truck drive shafts 11 to be measured, run motor 10, motor 10 drives portable plate 4 to deviate from fixing plate 3 direction along slide rail 2 direction and moves, and truck drive shaft 11 to be measured stretches gradually；
(3) motor 10 runs stop motion after 2-3s, and now truck drive shaft 11 to be measured is in elongated condition, and the axle center of its central siphon and telescopic is on same straight line；Switching two blowing models driving cylinders 7, drive the air inlets 19 of cylinders 7 and venthole 20 to supply to two simultaneously, two drive cylinder 7 to provide to provide less centering power to fixture, and two fixtures clamp the two ends of truck drive shaft 11 to be measured gently；
(4) antiport motor 10, motor 10 drives portable plate 4 to move along slide rail 2 direction to fixing plate 3 direction, in this process, portable plate 4 contacts and compresses gradually truck drive shaft 11 to be measured with two postive stop baffles 5 above fixing plate 3 with truck drive shaft 11 both ends of the surface to be measured, force transducer 13 is utilized to measure truck drive shaft 11 pressure experienced to be measured in this process, and by force transducer 13, motor 10 is carried out closed loop control, when the power that force transducer 13 detects reaches preset value, motor 10 continues the balance of the power in moving and utilize flexible member 21 to ensure, the power that force sensor 13 detects is made to be always certain value；
(5) reading of magnetic railings ruler is read, the data that magnetic railings ruler reads are the distance value of motor 10 motion, this distance value is in the scope of fluctuation, in the process that force transducer 13 retentivity is constant, the excursion detected when magnetic railings ruler is in the scope of ± 0.01mm and after stablizing more than 3s, read the reading of magnetic railings ruler, and using this reading length as truck drive shaft 11 to be measured；
(6) antiport motor 102-3s after magnetic railings ruler measurement, stops two supply driving cylinders 7, and now fixture unclamps, and manually or automatically mode takes off truck drive shaft 11 to be measured, completes the detection of single truck drive shaft to be measured 11；
(7) detection of next truck drive shaft to be measured 11 is carried out, it is only necessary to repeat step 2-6.
The internal diameter of cylinder driving cylinder 77 is 100mm, diameter of piston rod is 30mm, cylinder 77 is driven to be provided with centering and two mode of operations of clamping, clamping pattern is the normal mode of operation of cylinder, now drive air inlet 1919 air inlet of cylinder 77, venthole 2020 is given vent to anger, and drives the clamping force that cylinder 77 provides to be sized to 3150-3800N；Under centering pattern, the air inlet while of air inlet 1919 and venthole 2020, the pressure of the two air inlet is identical, and the lifting surface area that band is piston is different, now drives the centering power that cylinder 77 provides
F=P × SPiston-P×(SPiston-SPiston rod)=P × SPiston rod
Wherein P is pressure, SPistonFor piston cross-section area, SPiston rodFor piston rod cross-sectional area, the centering power that F provides for cylinder, centering power is sized to 100-120N, and centering power is only for stretching truck drive shaft, the telescopic of guarantee truck drive shaft and the axle center of central siphon are on same straight line, but do not affect truck drive shaft and horizontally slip in fixture.
Embodiment provided above is the better embodiment of the present invention, only it is used for the present invention is conveniently described, not the present invention is done any pro forma restriction, any art has usually intellectual, if in the scope without departing from the carried technical characteristic of the present invention, utilize the Equivalent embodiments that the done local of disclosed technology contents is changed or modified, and without departing from the technical characteristic content of the present invention, all still fall within the scope of the technology of the present invention feature.
Claims (7)
1. the truck drive shaft device for detecting length that a band has elastic component, it is characterized in that: include base, slide rail, fixing plate, portable plate, cylinder clamping device, flexible member, motor driver, force transducer and a support arrangement, described slide rail is fixed on above base, described slide rail arranges fixing plate and portable plate, described fixing plate is fixed on one end of slide rail, the sliding shoe matched with described slide rail it is provided with bottom portable plate, described motor driver is fixed on described slide rail, the bottom of described portable plate is fixed with flexible member, one end of described force transducer connects the motor head of motor driver, the other end connects described flexible member, portable plate is driven to move on described slide rail by described flexible member during the motion of described motor driver；Being equipped with the cylinder clamping device for clamping truck drive shaft two ends to be measured above described fixing plate and portable plate, described support arrangement is arranged on the slide rail between fixing plate and portable plate, and described support arrangement is for supporting the central siphon in the middle part of truck drive shaft to be measured；Described postive stop baffle is provided with two, is separately positioned on the upper of described fixing plate and portable plate, and two postive stop baffles are for carrying out spacing to the two ends of truck drive shaft to be measured；Base below described slide rail is additionally provided with the magnetic railings ruler for measuring vehicle transmission shaft length to be measured.
2. the truck drive shaft device for detecting length that a kind of band according to claim 1 has elastic component, it is characterised in that: described flexible member is elastic cylinder.
3. the truck drive shaft device for detecting length that a kind of band according to claim 1 has elastic component, it is characterized in that: described motor driver includes motor, shaft coupling, ball-screw and movable block, described motor connects one end of ball-screw by shaft coupling, described movable block is provided with the screwed hole matched with described ball-screw, described movable block connects described flexible member, described movable block rectilinear motion is driven by described ball-screw when described motor rotates, movable block drives portable plate along slide rail rectilinear motion by described flexible member.
4. the truck drive shaft device for detecting length that a kind of band according to claim 1 has elastic component, it is characterized in that: described cylinder clamping device includes driving cylinder and fixture, described fixture includes fixed chuck and active chuck, fixed chuck is fixed on fixing plate or portable plate, active chuck is fixed on the piston rod end driving cylinder, drives cylinder to drive described active chuck to move to fixed chuck direction.
5. the truck drive shaft device for detecting length that a kind of band according to claim 4 has elastic component, it is characterised in that: the V-shaped design of contact surface of described active chuck and truck drive shaft to be measured.
6. the truck drive shaft device for detecting length that a kind of band according to claim 1 has elastic component, it is characterized in that: described support arrangement includes gripper shoe, two spring bearings and two bearing sliders, the T-shaped chute being perpendicular to slide rail direction is had above described gripper shoe, two spring bearings are separately fixed on two bearing sliders, two bearing sliders are arranged in described T-shaped chute and can along described T-shaped chute rectilinear motions, two bearing sliders are equipped with hole, location, two bearing sliders are fixed in described gripper shoe by the bolt matched with hole, described location.
7. the truck drive shaft device for detecting length that a kind of band according to claim 1 has elastic component, it is characterised in that: described portable plate is also connected with for manual adjustments portable plate wind of position on slide rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610169832.5A CN105716516B (en) | 2016-03-23 | 2016-03-23 | The truck drive shaft device for detecting length that a kind of band has elastic component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610169832.5A CN105716516B (en) | 2016-03-23 | 2016-03-23 | The truck drive shaft device for detecting length that a kind of band has elastic component |
Publications (2)
| Publication Number | Publication Date |
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| CN105716516A true CN105716516A (en) | 2016-06-29 |
| CN105716516B CN105716516B (en) | 2018-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610169832.5A Active CN105716516B (en) | 2016-03-23 | 2016-03-23 | The truck drive shaft device for detecting length that a kind of band has elastic component |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105526897A (en) * | 2016-01-18 | 2016-04-27 | 中国石油化工股份有限公司 | Pipe and rod length measuring device for work-over work |
| CN107869950A (en) * | 2017-12-20 | 2018-04-03 | 南阳淅减汽车减振器有限公司 | A kind of damper piston pole length automatic detection device |
| CN112326007A (en) * | 2020-10-21 | 2021-02-05 | 浙江欧迪恩传动科技股份有限公司 | Detection method of weighing and drawing detection device applied to driving shaft |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526897A (en) * | 2016-01-18 | 2016-04-27 | 中国石油化工股份有限公司 | Pipe and rod length measuring device for work-over work |
| CN107869950A (en) * | 2017-12-20 | 2018-04-03 | 南阳淅减汽车减振器有限公司 | A kind of damper piston pole length automatic detection device |
| CN107869950B (en) * | 2017-12-20 | 2023-11-21 | 南阳淅减汽车减振器有限公司 | Automatic detection device for length of piston rod of shock absorber |
| CN112326007A (en) * | 2020-10-21 | 2021-02-05 | 浙江欧迪恩传动科技股份有限公司 | Detection method of weighing and drawing detection device applied to driving shaft |
| CN112326007B (en) * | 2020-10-21 | 2022-04-19 | 浙江欧迪恩传动科技股份有限公司 | Detection method of weighing and drawing detection device applied to driving shaft |
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|---|---|
| CN105716516B (en) | 2018-05-29 |
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Application publication date: 20160629 Assignee: Yichang Junwang Group Co.,Ltd. Assignor: JIANG University OF TECHNOLOGY Contract record no.: X2023980035832 Denomination of invention: A length detection device for automotive transmission shaft with elastic components Granted publication date: 20180529 License type: Common License Record date: 20230520 |
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Application publication date: 20160629 Assignee: FOSHAN YAOYE TECHNOLOGY Co.,Ltd. Assignor: JIANG University OF TECHNOLOGY Contract record no.: X2023980035955 Denomination of invention: A length detection device for automotive transmission shaft with elastic components Granted publication date: 20180529 License type: Common License Record date: 20230526 |
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Application publication date: 20160629 Assignee: Shandong precision product quality inspection Co.,Ltd. Assignor: JIANG University OF TECHNOLOGY Contract record no.: X2023980042381 Denomination of invention: A length detection device for automotive transmission shaft with elastic components Granted publication date: 20180529 License type: Common License Record date: 20230925 |
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