CN108398253A - A kind of spring fatigue life test bench installation - Google Patents
A kind of spring fatigue life test bench installation Download PDFInfo
- Publication number
- CN108398253A CN108398253A CN201810213331.1A CN201810213331A CN108398253A CN 108398253 A CN108398253 A CN 108398253A CN 201810213331 A CN201810213331 A CN 201810213331A CN 108398253 A CN108398253 A CN 108398253A
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- rotation axis
- spring
- sliding clamp
- fatigue life
- test bench
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- 238000012360 testing method Methods 0.000 title claims abstract description 37
- 238000009434 installation Methods 0.000 title claims abstract description 17
- 239000004973 liquid crystal related substance Substances 0.000 claims description 8
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 7
- 230000002459 sustained effect Effects 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention provides a kind of spring fatigue life test bench installation, including dual-axle motor, gear wheel reversing case, connector sleeve, screw rod, sliding clamp, pressure sensor and strap, first rotation axis, second rotation axis, the both ends of third rotation axis and the 4th rotation axis are welded with connector sleeve, and interior perforation is offered among the front end of connector sleeve, the sliding clamp is slidably mounted on by the T-type sliding block of its lower end both sides in the T-type sliding groove on test-bed body, the centre of the sliding clamp is equipped with spring spool, and also it is inlaid with pressure sensor among the inside of sliding clamp, it is further fixed on strap on test-bed body on the outside of the sliding clamp face, and the centre of strap is also interspersed with guide rod.Under the drive of one group of motor, four groups of identical springs can be tested simultaneously, improve the accuracy of experiment, guide rod can avoid spring and deform and deviate from from the inside of spring spool after stress during the test.
Description
Technical field
The invention belongs to spring fatigue test technical fields, more specifically, more particularly to a kind of spring fatigue life examination
Test platform equipment.
Background technology
After spring is produced, before the use, can just it be come into operation by stringent test, because spring majority is
Using the critical piece in machinery, vehicles, such as the spring on vehicle, if mounted in a vehicle spring does not have by stringent
Test is at will used mounted in vehicles, and performance does not reach requirement, that is easy for causing very serious consequence；And for another example
For the spring of shock-absorbing, because of the decline of performance so that vehicle disequilibrium be easy to cause traffic accident.
The present inventor is found that similar patent during patent searching, for example, application No. is：
In 201320569519.2 Chinese patent, disclose a kind of helical spring fatigue life testing apparatus, including rack, motor,
Retarder and camshaft；The motor is connect through retarder with camshaft drive；It is equipped at intervals at least four on the camshaft
Cam member；Each cam member is mainly by cam, push rod, limiting bush, spring, mandril, positioning pin and positioning pin
Seat composition；The push rod is arranged in the lower section of cam, and the limiting bush is set on the push rod, and the spring is also set in
Lower section on push rod and positioned at limiting bush；The mandril is fixedly connected with the lower end of push rod；The positioning pin is arranged described
The lower section of mandril；And it is connect with the location key seat screw-thread fit.It is primary only that this programme solves experimental rig in the prior art
The problem of one helical spring capable of being tested, inefficiency, production requirement cannot be met.
Based on above-mentioned, the inventors discovered that, in traditional spring experimental rig, test examination can only be carried out to single spring
It tests or multigroup spring is fixed on the inside of same clamping plate and test, the accuracy of spring test is influenced, in testing experiment
During spring stress deform, be easy deviate from out of spring spool, cause the damage of personnel or equipment.
Then, in view of this, being studied improvement for existing structure and missing, a kind of spring fatigue life examination is provided
Platform equipment is tested, to achieve the purpose that with more more practical value.
Invention content
It is above-mentioned to solve in order to solve the above technical problem, the present invention provides a kind of spring fatigue life test bench installation
The a series of problems proposed in background technology.
The purpose and effect of spring fatigue life test bench installation of the present invention, are reached by technological means in detail below：
A kind of spring fatigue life test bench installation, including test-bed body, hexagon inside groove, T-type sliding groove, head cover, liquid
Crystal display, dual-axle motor, pedestal, gear wheel reversing case, the first rotation axis, the second rotation axis, third rotation axis, the 4th rotation
Axis, support plate, auxiliary bearing, connector sleeve, interior perforation, screw rod, limited block, sliding clamp, T-type sliding block, screw hole, spring spool,
Pressure sensor, strap, guide rod, outer casing, outer bearing, screw hole and adjusting screw bar, the test-bed body it is interior
It is provided with hexagon inside groove among side, and the apical lateral of hexagon inside groove is equipped with head cover, first rotation axis, second turn
Moving axis, third rotation axis, the 4th rotation axis both pass through the auxiliary bearing in support plate and are fixed on by the support plate at its both ends
The inside of hexagon inside groove, the dual-axle motor is bolted on the pedestal on the inside of hexagon inside groove, and dual-axle motor
It is connected by gear wheel reversing case between the motor shaft at both ends and third rotation axis, the 4th rotation axis, and dual-axle motor and first
Be connected by belt between rotation axis, the second rotation axis, first rotation axis, the second rotation axis, third rotation axis with
And the 4th the both ends of rotation axis be welded with connector sleeve, and interior perforation is offered among the front end of connector sleeve, the sliding clamp
It is slidably mounted in the T-type sliding groove on test-bed body by the T-type sliding block of its lower end both sides, and screw flight section passes through
Screw hole on T-type sliding block is pierced by T-type sliding groove, and the light bar segment of screw rod penetrates into outer casing outer bearing, the outer casing two
Limited block is further fixed in the screw rod light bar segment at end, the adjusting screw bar passes through the screw hole at outer casing both ends to be screwed into experiment
In internal thread hole on stage body, the centre of the sliding clamp is equipped with spring spool, and is also inlayed among the inside of sliding clamp
Embedded with pressure sensor, and it is connected by conducting wire between pressure sensor liquid crystal display corresponding on test-bed body,
Strap is further fixed on test-bed body on the outside of the sliding clamp face, and the centre of strap is also interspersed with guiding
Bar.
Further, first rotation axis and the second rotation axis are arranged on sustained height, and third rotation axis and the
Four rotation axis are also disposed at sustained height.
Further, first rotation axis, the second rotation axis and third rotation axis, the 4th rotation axis are in up and down, staggeredly
Setting.
Further, the peripheral surface of light bar segment is also dentalation on the inside of the screw rod, and the dentalation and interior perforation
It is meshed, and the centerline of the center line of screw rod and connector sleeve is on same straight line.
Further, the sliding clamp is annularly provided with four groups with strap with the center of testing stand.
Further, sliding clamp described in four groups can be under the drive of dual-axle motor simultaneously to geometrical clamp on the other side
The direction of plate is close or separate.
Further, spring spool is also equipped on the inside of the strap, and on the spring spool and sliding clamp
Spring spool be oppositely arranged.
Compared with prior art, the present invention has the advantages that：
The setting of four groups of sliding clamps and strap makes outer casing be leaned on to testing stand by rotating adjusting screw bar
Closely, and rotating screw rod makes the front end of screw rod be inserted into the interior perforation of connector sleeve, thus under the drive of one group of motor, it can be simultaneously
Four groups of identical springs are tested, the accuracy of experiment is improved, also can pull out screw rod by outer casing, by screw rod from
It is pulled out on the inside of connector sleeve, stops the work of sliding clamp as needed.
The setting of guide rod, test spring is put on the inside of two groups of spring spools tested when, can will be oriented to
Bar extends through the inside of spring, avoids spring from deforming after stress during the test and deviates from from the inside of spring spool,
Cause equipment or the damage of personnel.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
Fig. 2 is the internal structure schematic diagram of the present invention.
Fig. 3 is enlarged structure schematic diagram at the A of the present invention.
Fig. 4 is enlarged structure schematic diagram at the B of the present invention.
Fig. 5 is enlarged structure schematic diagram at the C of the present invention.
Fig. 6 is the supporting plate structure schematic diagram of the present invention.
Fig. 7 is the connecting jacket structure schematic diagram of the present invention.
Fig. 8 is the sliding clamp positive structure schematic of the present invention.
Fig. 9 is the outer casing positive structure schematic of the present invention.
In figure, the correspondence of component names and accompanying drawing number is：
1- test-bed bodies, 101- hexagon inside grooves, 102-T type sliding grooves, 103- head covers, 104- liquid crystal displays, 2- are bis-
Spindle motor, 201- pedestals, 202- gear wheel reversing casees, the first rotation axis of 301-, the second rotation axis of 302-, 303- third rotation axis,
The 4th rotation axis of 304-, 4- support plates, 401- auxiliary bearings, 5- connector sleeves, perforation in 501-, 6- screw rods, 601- limited blocks, 7-
Sliding clamp, 701-T type sliding blocks, 702- screw holes, 703- spring spools, 704- pressure sensors, 8- straps, 801- are oriented to
Bar, 9- outer casings, 901- outer bearings, 902- screw holes, 903- adjusting screw bars.
Specific implementation mode
Embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples.Following embodiment is used for
Illustrate the present invention, but cannot be used for limiting the scope of the invention.
In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more；Term "upper",
The orientation or positional relationship of the instructions such as "lower", "left", "right", "inner", "outside", " front end ", " rear end ", " head ", " tail portion " is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as pair
The limitation of the present invention.In addition, term " first ", " second ", " third " etc. are used for description purposes only, and should not be understood as instruction or
Imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " connected " " connects
Connect " it shall be understood in a broad sense, for example, it may be being fixedly connected, it may be a detachable connection, or be integrally connected；It can be machine
Tool connects, and can also be electrical connection；It can be directly connected, it can also be indirectly connected through an intermediary.For this field
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Embodiment：
As shown in attached drawing 1 to attached drawing 9：
The present invention provides a kind of spring fatigue life test bench installation, including test-bed body 1, hexagon inside groove 101, T-type
Sliding groove 102, head cover 103, liquid crystal display 104, dual-axle motor 2, pedestal 201, gear wheel reversing case 202, the first rotation axis
301, the second rotation axis 302, third rotation axis 303, the 4th rotation axis 304, support plate 4, auxiliary bearing 401, connector sleeve 5 is interior
Perforation 501, screw rod 6, limited block 601, sliding clamp 7, T-type sliding block 701, screw hole 702, spring spool 703, pressure sensor
704, strap 8, guide rod 801, outer casing 9, outer bearing 901, screw hole 902 and adjusting screw bar 903, the testing stand
Hexagon inside groove 101 is provided among the inside of body 1, and the apical lateral of hexagon inside groove 101 is equipped with head cover 103, it is described
First rotation axis 301, the second rotation axis 302, third rotation axis 303, the 4th rotation axis 304 both pass through the auxiliary in support plate 4
Bearing 401 and the inside that hexagon inside groove 101 is fixed on by the support plate at its both ends 4, the dual-axle motor 2 are solid by bolt
It is scheduled on the pedestal 201 of 101 inside of hexagon inside groove, and the motor shaft at 2 both ends of dual-axle motor and third rotation axis the 303, the 4th
It is connected by gear wheel reversing case 202 between rotation axis 304, and dual-axle motor 2 and the first rotation axis 301, the second rotation axis 302
Between be connected by belt, first rotation axis 301, the second rotation axis 302, third rotation axis 303 and the 4th turn
The both ends of moving axis 304 are welded with connector sleeve 5, and interior perforation 501 is offered among the front end of connector sleeve 5, the sliding clamp 7
It is slidably mounted in the T-type sliding groove 102 on test-bed body 1 by the T-type sliding block 701 of its lower end both sides, and the spiral shell of screw rod 6
Line section passes through the screw hole 702 on T-type sliding block 701 to be pierced by T-type sliding groove 102, and the light bar segment of screw rod 6 penetrates into outside outer casing 9
In bearing 901, limited block 601 is further fixed in 6 light bar segment of screw rod at 9 both ends of the outer casing, the adjusting screw bar 903 is worn
The screw hole 902 for crossing 9 both ends of outer casing is screwed into the internal thread hole on test-bed body 1, the intermediate installation of the sliding clamp 7
There is spring spool 703, and be also inlaid with pressure sensor 704 among the inside of sliding clamp 7, and pressure sensor 704 and examination
It tests on stage body 1 and is connected by conducting wire between corresponding liquid crystal display 104, CPS181 can be selected in pressure sensor 704, institute
It states and is further fixed on strap 8 on the test-bed body 1 on the outside of 7 face of sliding clamp, and the centre of strap 8 is also interspersed with and leads
To bar 801.
Wherein, first rotation axis, 301 and second rotation axis 302 is arranged on sustained height, and third rotation axis 303
It is also disposed at sustained height with the 4th rotation axis 304.
Wherein, first rotation axis 301, the second rotation axis 302 and third rotation axis 303, the 4th rotation axis 304 are presented
Under, be staggered, avoid the first rotation axis 301, the second rotation axis 302 with third rotation axis 303, the 4th rotation axis 304 mutually
Rotation work is influenced, while also allowing for the installation of gear wheel reversing case 202, to make dual-axle motor 2 pass through 202 band of gear wheel reversing case
Dynamic third rotation axis 303, the rotation of the 4th rotation axis 304.
Wherein, the peripheral surface of 6 inside light bar segment of the screw rod is also dentalation, and the dentalation and interior perforation 501
It is meshed, and screw rod 6 can be inserted into connector sleeve by the centerline of the center line of screw rod 6 and connector sleeve 5 on same straight line
In the interior perforation 501 of 5 insides, convenient for that also screw rod 6 can be driven to be rotated in the rotation of connector sleeve 5.
Wherein, the sliding clamp 7 is annularly provided with four groups with strap 8 with the center of testing stand 1, in one group of electricity
Under the drive of machine, can simultaneously four groups of identical springs are tested, improve the accuracy of experiment, also can by outer casing 9 to
Screw rod 6 is pulled out from 5 inside of connector sleeve, this group of sliding clamp 7 is made to be stopped by outer pulling screw rod 6.
Wherein, sliding clamp 7 described in four groups can be under the drive of dual-axle motor 2 simultaneously to strap on the other side
8 direction is close or separate.
Wherein, the inside of the strap 8 is also equipped with spring spool 703, and the spring spool 703 and sliding clamp
Spring spool 703 on 7 is oppositely arranged, and is tested convenient for test spring to be placed in two groups of opposite spring spools 703.
The specifically used mode of the present embodiment and effect：
In the present invention, keep outer casing 9 close to testing stand by rotating adjusting screw bar 903, and rotate screw rod 6 to make screw rod
6 front end is inserted into the interior perforation 501 of connector sleeve 5, and then four groups of identical springs can be put into sliding clamp 7 and fixed
In spring spool 703 on clamping plate 8, and guide rod 801 is extended through to the inside of spring, avoids spring stress during the test
It deforms and deviates from from the inside of spring spool afterwards, cause equipment or the damage of personnel, open dual-axle motor 2 and pass through respectively
First rotation axis 301 of belt or the drive of gear wheel reversing case 202, the second rotation axis 302, third rotation axis 303 and the 4th turn
Moving axis 304 is rotated, and can be tested simultaneously four groups of identical springs, be improved the accuracy of experiment, can also pass through outer shield
Plate 9 pulls out screw rod 6, and the front end of screw rod 6 is pulled out from 5 inside of connector sleeve, stops the work of sliding clamp 7 as needed,
Pressure sensor 704 shows the pressure feedback detected to corresponding liquid crystal display 104 during the test.
The embodiment of the present invention provides for the sake of example and description, and is not exhaustively or by this to send out
It is bright to be limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Choosing
It is and to make those skilled in the art to more preferably illustrate the principle of the present invention and practical application to select and describe embodiment
It will be appreciated that various embodiments with various modifications of the present invention to design suitable for special-purpose.
Claims (7)
1. a kind of spring fatigue life test bench installation, it is characterised in that：The spring fatigue life test bench installation includes experiment
Stage body (1), hexagon inside groove (101), T-type sliding groove (102), head cover (103), liquid crystal display (104), dual-axle motor (2),
Pedestal (201), gear wheel reversing case (202), the first rotation axis (301), the second rotation axis (302), third rotation axis (303), the
Four rotation axis (304), support plate (4), auxiliary bearing (401), connector sleeve (5), interior perforation (501), screw rod (6), limited block
(601), sliding clamp (7), T-type sliding block (701), screw hole (702), spring spool (703), pressure sensor (704), geometrical clamp
Plate (8), guide rod (801), outer casing (9), outer bearing (901), screw hole (902) and adjusting screw bar (903), the experiment
Hexagon inside groove (101) is provided among the inside of stage body (1), and the apical lateral of hexagon inside groove (101) is equipped with head cover
(103), first rotation axis (301), the second rotation axis (302), third rotation axis (303), the 4th rotation axis (304) are worn
The auxiliary bearing (401) crossed in support plate (4) is simultaneously fixed on the interior of hexagon inside groove (101) by the support plate at its both ends (4)
Side, the dual-axle motor (2) is bolted on the pedestal (201) on the inside of hexagon inside groove (101), and dual-axle motor
(2) it is connected by gear wheel reversing case (202) between the motor shaft at both ends and third rotation axis (303), the 4th rotation axis (304)
It connects, and dual-axle motor (2) is connected by belt with the first rotation axis (301), the second rotation axis between (302), described
One rotation axis (301), the second rotation axis (302), third rotation axis (303) and the 4th rotation axis (304) both ends weld
There is connector sleeve (5), and offer interior perforation (501) among the front end of connector sleeve (5), the sliding clamp (7) passes through its lower end
The T-type sliding block (701) of both sides is slidably mounted on the interior of the T-type sliding groove (102) on test-bed body (1), and the screw thread of screw rod (6)
Section passes through the screw hole (702) on T-type sliding block (701) to be pierced by T-type sliding groove (102), and the light bar segment of screw rod (6) penetrates into outer shield
In plate (9) outer bearing (901), it is further fixed on limited block (601) in screw rod (6) light bar segment at outer casing (9) both ends, it is described
Adjusting screw bar (903) passes through the screw hole (902) at outer casing (9) both ends to be screwed into the internal thread hole on test-bed body (1),
The centre of the sliding clamp (7) is equipped with spring spool (703), and is also inlaid with pressure among the inside of sliding clamp (7)
Sensor (704), and by leading between pressure sensor (704) liquid crystal display (104) corresponding on test-bed body (1)
Line is connected, and strap (8), and strap are further fixed on the test-bed body (1) on the outside of sliding clamp (7) face
(8) centre is also interspersed with guide rod (801).
2. spring fatigue life test bench installation as described in claim 1, it is characterised in that：First rotation axis (301) with
Second rotation axis (302) is arranged on sustained height, and third rotation axis (303) is also disposed at together with the 4th rotation axis (304)
One height.
3. spring fatigue life test bench installation as claimed in claim 2, it is characterised in that：First rotation axis (301),
Two rotation axis (302) and third rotation axis (303), the 4th rotation axis (304) are in up and down, are staggered.
4. spring fatigue life test bench installation as described in claim 1, it is characterised in that：Light bar segment on the inside of the screw rod (6)
Peripheral surface be also dentalation, and the dentalation is meshed with interior perforation (501), and the center line of screw rod (6) and connection
The centerline of (5) is covered on same straight line.
5. spring fatigue life test bench installation as described in claim 1, it is characterised in that：The sliding clamp (7) and fixation
Clamping plate (8) is annularly provided with four groups with the center of testing stand (1).
6. spring fatigue life test bench installation as claimed in claim 5, it is characterised in that：Sliding clamp (7) described in four groups is equal
It can be close or separate to the direction of strap on the other side (8) simultaneously under the drive of dual-axle motor (2).
7. spring fatigue life test bench installation as described in claim 1, it is characterised in that：The inside of the strap (8)
It is also equipped with spring spool (703), and the spring spool (703) is set relatively with the spring spool (703) on sliding clamp (7)
It sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810213331.1A CN108398253B (en) | 2018-03-15 | 2018-03-15 | Spring fatigue life test bed equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810213331.1A CN108398253B (en) | 2018-03-15 | 2018-03-15 | Spring fatigue life test bed equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108398253A true CN108398253A (en) | 2018-08-14 |
| CN108398253B CN108398253B (en) | 2020-06-12 |
Family
ID=63092478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810213331.1A Active CN108398253B (en) | 2018-03-15 | 2018-03-15 | Spring fatigue life test bed equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108398253B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082051A (en) * | 2019-04-29 | 2019-08-02 | 广州鹭源电子有限公司 | A kind of spring automatic detection device |
| CN114354171A (en) * | 2022-01-10 | 2022-04-15 | 唐秀保 | Sewage sludge scraping life detection simulation device |
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| CN103308299A (en) * | 2013-06-04 | 2013-09-18 | 浙江伊思灵双第弹簧有限公司 | Temperature-controlled multiphase horizontal spring fatigue tester |
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| CN107036805A (en) * | 2017-06-14 | 2017-08-11 | 苏州科技大学 | Spring anti-fatigue test equipment |
| CN206732843U (en) * | 2017-05-09 | 2017-12-12 | 南京瓦科机械设备有限公司 | A kind of mechanical production devices fast compressing device |
| CN107727389A (en) * | 2017-12-01 | 2018-02-23 | 佛山市子活力弹簧有限公司 | A kind of spring experimental rig |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101881693A (en) * | 2010-03-31 | 2010-11-10 | 芜湖杰锋汽车动力系统有限公司 | Spring fatigue testing equipment and testing method thereof |
| KR101407951B1 (en) * | 2013-03-19 | 2014-06-17 | 한국수력원자력 주식회사 | Test equipment for the measurement of compress force and distance of the motor operator springpack |
| CN103308299A (en) * | 2013-06-04 | 2013-09-18 | 浙江伊思灵双第弹簧有限公司 | Temperature-controlled multiphase horizontal spring fatigue tester |
| CN104535315A (en) * | 2015-01-07 | 2015-04-22 | 宁波力品格自动化科技有限公司 | Self-locking air spring compressing force and fatigue strength integrated detecting device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082051A (en) * | 2019-04-29 | 2019-08-02 | 广州鹭源电子有限公司 | A kind of spring automatic detection device |
| CN110082051B (en) * | 2019-04-29 | 2021-09-10 | 翟如相 | Automatic spring detection device |
| CN114354171A (en) * | 2022-01-10 | 2022-04-15 | 唐秀保 | Sewage sludge scraping life detection simulation device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108398253B (en) | 2020-06-12 |
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