CN105277156B - A kind of detection means and detection method for the abrasion of car lifting J-Horner nut - Google Patents
A kind of detection means and detection method for the abrasion of car lifting J-Horner nut Download PDFInfo
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- CN105277156B CN105277156B CN201510867897.2A CN201510867897A CN105277156B CN 105277156 B CN105277156 B CN 105277156B CN 201510867897 A CN201510867897 A CN 201510867897A CN 105277156 B CN105277156 B CN 105277156B
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Abstract
The present invention relates to a kind of detection means and detection method for the abrasion of car lifting J-Horner nut, including：One gusset piece, the body being fixed on gusset piece and the test pin for being inserted in set in vivo and can axially moving and rotate in vivo in set, test pin one end are arranged to the adaptable truncated conical shape of screw rod tooth form groove；The other end is inserted in a spring and can remain impaction state under the action of the spring；The set is provided with two cylindrical grooves, respectively cylindrical groove one and cylindrical groove two in vivo；The test pin other end is connected after the stretching of cylindrical groove one after being inserted in spring by pin with a thread bush, enables thread bush together with test pin while can move axially also rotate；Measurement apparatus is fixed on thread bush with locking nut and moved with thread bush；Mark component is fixed on gusset piece and can go out the abrasion loss of nut by the traverse measurement of measurement plate.The present invention can precisely, conveniently, in time, efficiently measure nut abrasion loss；Simple to operate and cost of manufacture is less expensive.
Description
Technical field
The present invention relates to for domestic and international locomotive, vehicle (vehicle include visitor, lorry) it is new make or repair procedures in periodically (or
It is irregular according to behaviour in service) detection car lifting J-Horner nut abrasion loss method and device, more particularly, to one kind be used for car lifting J-Horner
The detection means and detection method of nut abrasion.
Background technology
At present, railway locomotive, vehicle, which are newly made or repaired, is required for that car body is erected into certain altitude with four stand vehicle devices are synchronous
In order to install or overhaul the parts and components of vehicle bottom.Nut in car lifting J-Horner is main rapid wear attrition component, and the mill of nut
Consumption is not easy to be found and observed, production potential safety hazard is present, and the method used at present is：Visually observation nut
Underface have iron-free or copper powders, there is powder to illustrate that nut is worn away,；The screw thread that screw rod engages with nut is filled in clearance gauge
The substantially abrasion loss of nut is can obtain between tooth form；Disintegrate car lifting J-Horner during overhaul, and measurement nut thread tooth form size can obtain
To accurately abrasion loss, overhaul general 1 year or several years once, as accidental impact causes car lifting J-Horner to damage except special circumstances.
In the prior art, visual observation only knows whether nut is wearing away, but cannot get the abrasion loss of nut；Plug
It is not accurate that chi fills in method；The available accurately abrasion loss that amends the law greatly but time-consuming and increase cost, the above method be not accurate, square
Just, not in time, not quick and cost it is also high, once find that nut abrasion meet or exceed limiting quantity and can buried to production not in time
Lower potential safety hazard.
The defects of following be present in prior art：1. visual observation only knows whether nut is wearing away, but cannot get spiral shell
Female abrasion loss；2. can obtain between filling in the form of thread that screw rod engages with nut with clearance gauge the substantially abrasion loss of nut but
It is not accurate；3. disintegrate car lifting J-Horner during overhaul, measurement nut thread tooth form size can obtain accurately abrasion loss, overhaul general one
Year or several years once, not in time, not quick and cost it is also high.
The content of the invention
The above-mentioned technical problem of the present invention is mainly what is be addressed by following technical proposals：
A kind of detection means for the abrasion of car lifting J-Horner nut, it is characterised in that including：One gusset piece, it is fixed on connection
Body on plate and the test pin for being inserted in set in vivo and can axially moving and rotate in vivo in set, detection are slightly held and set
It is set to the adaptable truncated conical shape of screw rod tooth form groove；The other end is inserted in a spring and can remain pressure under the action of the spring
Tight state；The set is provided with two cylindrical grooves, respectively cylindrical groove one and cylindrical groove two in vivo；The groove depth of cylindrical groove one is more than
The groove depth of cylindrical groove two；And the groove depth of cylindrical groove two is less than the limited compression amount of spring；The both ends of the spring, which is born against, to be detected
The both ends of pin and body；The detection slightly other end is connected after the stretching of cylindrical groove one after being inserted in spring by pin with a thread bush,
Enable thread bush together with test pin while can move axially also rotate；Measurement apparatus is fixed on screw thread with locking nut
Put and moved with thread bush；Mark component is fixed on gusset piece and can go out nut by the traverse measurement of measurement plate
Abrasion loss.
In a kind of above-mentioned detection means for the abrasion of car lifting J-Horner nut, the gusset piece is fixed by soket head cap screw
On tested nut, the upper-lower position that cylinder end clamping fixed screw is used to adjust gusset piece makes the head of test pin insert screw rod tooth form
Groove and away from tooth bottom 1mm and the gapless qualified position in screw rod tooth form both sides, and it is locked by locking nut.
A guide groove is provided with below a kind of above-mentioned detection means for the abrasion of car lifting J-Horner nut, gusset piece, is led
It is fixed on into flat key insertion guide groove and by fillister head screw on nut, gusset piece work is directed to flat key when adjusting up and down and led
Correct position is in all the time from swinging to it is prevented.
In a kind of above-mentioned detection means for the abrasion of car lifting J-Horner nut, in addition to a protective cover, pass through coiled hair spiral shell
Protective cover is fixed on gusset piece by nail, and above-mentioned thread bush, part body, measurement plate and mark component are arranged at protective cover
It is interior.
In a kind of above-mentioned detection means for the abrasion of car lifting J-Horner nut, described mark component is a proximity switch
Component, including proximity switch mounting seat and proximity switch, proximity switch are fixed on gusset piece by soket head cap screw；It is close to open
Pass is installed in proximity switch mounting seat, and the measurement apparatus is a measurement version.
In a kind of above-mentioned detection means for the abrasion of car lifting J-Horner nut, the mark component is a graduated scale, institute
It is an indicator to state measurement apparatus, and graduated scale top nut is never pointed out by the movement for detecting mobile drive indicator slightly
Abrasion loss.
A kind of detection method for detecting car lifting J-Horner nut abrasion loss, it is characterised in that including：
One installation and debugging step：Screw rod tooth form groove is inserted into and away from tooth bottom 1mm and screw rod tooth form both sides in the head of test pin
Gapless is that correct position is as qualified, and the measurement plate 7 that now proximity switch 12 measures and the distance value of proximity switch are A1, number
Value A1 is arranged to zero when touch-screen is shown；
The step of one detection abrasion loss：Car lifting J-Horner nut Abrasion detecting device will decline together with the abrasion of nut, when
When the abrasion loss of nut reaches the limiting value 2mm of setting, nut will vertically decline 2.0706mm, and now the head of test pin is inserted
How many axial displacement are produced after entering screw rod tooth form groove, according to the definition of trigonometric function:Tangent tan α=h/H, H=h*tan α, its
In, α is 15 degree, result of calculation test pin and measurement plate axial displacement H, and the distance of measurement plate and proximity switch is A2=A1+H,
By H be divided into 20 parts then A2 '=A1+H/20 be abrasion loss.
In a kind of detection method of above-mentioned detection car lifting J-Horner nut abrasion loss, the liter of car lifting J-Horner when detecting nut abrasion loss
Drop function must be stopped, and be specifically：The protective cover of car lifting J-Horner nut Abrasion detecting device is first opened, holds locking nut handle
Pin is pulled out and is rotated by 90 ° in the deep trouth for being then introduced into body from the shallow slot of body, and now test pin is by the tooth with screw rod
Type is contacted, while measurement plate is also changed with proximity switch distance.
In a kind of detection method of above-mentioned detection car lifting J-Horner nut abrasion loss, in addition to：
One the step of checking and examining；Because test pin can not constantly tracing detection, checked and examined once in the time of interval user setting.
After nut Abrasion detecting is completed, hold locking nut pin is pulled out and is rotated by 90 ° from the deep trouth of body and be then introduced into
In shallow slot, make how no matter test pin contact with the tooth form of screw rod, close protective cover and locked with pan head screw and gusset piece, now
It can start shooting and carry out the lifting or decline work of car lifting J-Horner.
Therefore, the invention has the advantages that：1st, can precisely, conveniently, in time, efficiently measure nut abrasion loss；2nd, tie
Structure is reasonable, simple to operate and cost of manufacture is less expensive.
Brief description of the drawings
The diagrammatic cross-section that it is zero with proximity switch detection and nut abrasion loss that Fig. 1, which is, i.e. car lifting J-Horner and the device are newly made
The qualified position of installation and debugging.Now the elevating function of car lifting J-Horner can not work；
Fig. 2 is the lifting work(of the diagrammatic cross-section, now car lifting J-Horner that reach 2mm with proximity switch detection and nut abrasion loss
It can not can work；
Fig. 3 is the diagrammatic cross-section that proximity switch does not detect nut abrasion loss, and now car lifting J-Horner can work；
Fig. 4 is trigonometric function graph of a relation when nut wears away 2mm；
The diagrammatic cross-section that it is zero with graduated scale detection and nut abrasion loss that Fig. 5, which is, i.e. car lifting J-Horner and the device newly make peace
Adjustment tries qualified position.Now the elevating function of car lifting J-Horner can not work；
Fig. 6 is the elevating function of the diagrammatic cross-section, now car lifting J-Horner that reach 2mm with graduated scale detection and nut abrasion loss
It can not work；
Fig. 7 is the diagrammatic cross-section for not detecting nut abrasion loss with graduated scale, and now car lifting J-Horner can work.
Fig. 8 is the structural representation of the measurement plate in the present invention.
Embodiment
Below by embodiment, and with reference to accompanying drawing, technical scheme is described in further detail.In figure,
Test pin 1, proximity switch mounting seat 2, spring 3, gusset piece 4, body 5, thread bush 6, measurement plate 7, protective cover 8；8 kinds of standard components
For：Locking nut 11, proximity switch 12, pin 13, tapered end holding screw 14, soket head cap screw 15, soket head cap screw 16, socket cap
Screw 17, dive key 18, pan head screw 19, locking nut 20, cylinder end clamping fixed screw 21.
Embodiment 1：
Fig. 1 be the present invention relates to for domestic and international locomotive, vehicle (vehicle include visitor, lorry) it is new make or repair procedures in use
The method and device of proximity switch periodically (or irregular) detection car lifting J-Horner nut abrasion.The device is marked by 8 parts and 11 kinds
Quasi- part composition：8 parts have：Test pin 1, proximity switch mounting seat 2, spring 3, gusset piece 4, body 5, thread bush 6, measurement plate
7th, protective cover 8；8 kinds of standard components are：Locking nut 11, proximity switch 12, pin 13, tapered end holding screw 14, soket head cap screw 15,
Soket head cap screw 16, fillister head screw 17, dive key 18, pan head screw 19, locking nut 20 and cylinder end clamping fixed screw 21.
Drawing size and technical requirements make 8 parts, buy 11 kinds of standard components, according to car lifting J-Horner nut Abrasion detecting device total figure and
The device untill qualified (such as Fig. 1 and Fig. 5) is welded, assembles, adjusts and debugged to technical requirements group.
As shown in figure 1, gusset piece 4 is fixed on nut with 4 soket head cap screws 15, with 2 cylinder end clamping fixed screws
The upper-lower position of 21 adjustment gusset pieces 4 makes the head of test pin 1 insert screw rod tooth form groove and away from tooth bottom 1mm and screw rod tooth form both sides
Then the locked cylinder end clamping fixed screw 21 of locking nut 20 is used in gapless qualified position；Body 5 loads in gusset piece 4 and bored
The end fixation of holding screw 14 can neither move axially also not rotatable；Test pin 1, which loads to be axially movable in body 5, can also turn
Dynamic, spring 3 is mounted between test pin 1 and body 5；Thread bush 6 is inserted in body 5 and is connected as one with test pin 1 with pin 13, spiral shell
Line set 6 can be moved axially and can also rotated simultaneously together with test pin 1；Measurement plate 7 is fixed on thread bush 6 with locking nut 11
And moved with thread bush 6；Proximity switch mounting seat 2 is fixed on gusset piece 4 with 4 soket head cap screws 16；Proximity switch
12 are installed in proximity switch mounting seat 2；Dive key 18 is fixed on nut by 2 fillister head screws 17, on the work of gusset piece 4
Flat key 18 is directed to during lower adjustment and is oriented to prevents it to be in correct position all the time from swinging；With 6 pan head screws 19 protective cover 8
It is fixed on gusset piece 4.Back detection pin 1, thread bush 6, measurement plate 7, locking nut 11 and the quilt of pin 13 are assembled by the above method
It is connected as one, while can moves axially and also make radial rotating.
Screw rod tooth form groove is inserted on the head of test pin 1 and otherwise should away from tooth bottom 1mm and the equal gapless in screw rod tooth form both sides
Re-work.Opened on body 5 two mutually in 90 degree of groove and a depth it is one shallow.Test pin 1 is pressed into screw rod tooth by spring 3 all the time
In type groove.
Illustrate herein：Each enterprise of abrasion loss regulation when being scrapped due to to(for) nut is different, therefore is simply selecting
It is different different with the setting of industrial computer to select the detecting distance of proximity switch, nut abrasion loss is directly read from graduated scale
The scale of graduated scale need to only be changed during device and other constant, the nut condemning limit abrasion that the application specific embodiment is set
Measure as 2mm.
2. as shown in Fig. 1,2,3 and 4, the car lifting J-Horner nut abrasion amount detecting device and car lifting J-Horner newly made are in installation and debugging
When, screw rod tooth form groove is inserted on the head of test pin 1 and is for correct position with screw rod tooth form both sides gapless away from tooth bottom 1mm
Qualified, the measurement plate 7 that now proximity switch 12 measures and the distance value of proximity switch 12 are A1, and numerical value A1 is when touch-screen is shown
It is arranged to zero.Car lifting J-Horner nut Abrasion detecting device will decline together with the abrasion of nut, be set when the abrasion loss of nut reaches
During fixed limiting value 2mm, nut will vertically decline 2.0706mm, and now be produced after the head insertion screw rod tooth form groove of test pin 1
Raw how many axial displacements (i.e. to left dislocation), according to the definition of trigonometric function:Tangent tan α=h/H, H=h*tan α=
2.0706*tan15=7.7274mm result of calculation test pin 1 and the axial displacement of measurement plate 7 7.7274mm be (Fig. 1 and Fig. 2's
Relative position), measurement plate 7 and the distance of proximity switch 12 are A2=A1+7.7274 (see Fig. 2), and numerical value A2 is shown in touch-screen
When be 2mm, by 7.7274mm be divided into 20 parts then A2 '=A1+0.77274/2 numerical value be 0.1mm abrasion when touch-screen is shown
Amount.Other abrasion loss can similarly be shown.
The elevating function of car lifting J-Horner must be stopped when detecting nut abrasion loss.First open car lifting J-Horner nut Abrasion detecting
The protective cover 8 of device, holds locking nut 11 pin 13 is pulled out and is rotated by 90 ° from the shallow slot of body 5 and be then introduced into set
In the deep trouth of body 5, now test pin 1 contacts the tooth form with screw rod, while also position is transformed into Fig. 2 to measurement plate 7 as shown in Figure 3
It can enter row distance detection to measurement plate 7 shown position, then (elevating function of car lifting J-Horner is not starting shooting) so proximity switch of starting shooting,
There is automatic synchronous lifting interface, point " nut Abrasion detecting " key in touch-screen, and touch-screen occurs a certain specific between 0-2mm
Numerical value and " normal lifting " illustrate that the limit is not arrived in mother nut abrasion, and point " automatic synchronous lifting " key can enter " lifting " or " decline "
Interface；As can not if represent that nut abrasion loss has arrived (mistake) limit, point " automatic synchronous lifting " key can not then enter " lifting " or
" decline " interface lock machine (elevating function of car lifting J-Horner is locked) simultaneously, is only more renewing nut and is adjusting, debugs the dress
It is qualified to put, a certain concrete numerical value that could be interior between touch-screen shows 0-2mm and " normal lifting ", normal journey of being allowed for access
Sequence.
3. as shown in Figures 2 and 3, because test pin 1 can not constantly tracing detection, separated in time (as weekly, monthly or
Half a year) check and examine once.After nut Abrasion detecting is completed, hold locking nut 11 and pin 13 is pulled out simultaneously from the deep trouth of body 5
It is rotated by 90 ° and is then introduced into shallow slot, make how no matter test pin 1 contact with the tooth form of screw rod, closes protective cover 8 and with 6
Pan head screw 19 locks with gusset piece 4, can now start shooting and carry out the lifting or decline work of car lifting J-Horner.
Embodiment 2
As shown in Fig. 5,6 and 7, graduated scale directly reads the device of nut abrasion loss with being worn away with proximity switch detection nut
The device of amount is essentially identical, completes the specific steps of the device and the device also basic phase of proximity switch detection nut abrasion loss
Together, it is constant that simply measurement plate 7 changes indicator 7 into, proximity switch 12 becomes the remaining parts of graduated scale 8.The scale and number of graduated scale 8
The abrasion loss for nut that value is reflected.So the device same section with detecting nut abrasion loss with proximity switch does not repeat to retouch
State.
The setting of graduated scale 8 and nut abrasion loss and the relation of indicator 7：Nut does not wear away and indicated when i.e. abrasion loss is zero
Scale indicated by pin 7 is the zero i.e. abrasion loss of nut zero, the displacement 7.7274mm of indicator 7 when nut wears away 2mm, indicator 7
Now indicated scale is that 2 i.e. nut abrasion loss is 2mm, and the actual range on graduated scale 8 between 0-2 is 7.7274mm,
7.7274mm is divided into ten lattice so per lattice 0.77274mm, the practical significance reflected per lattice is that nut abrasion loss is 0.2mm,
The precision is enough.
Equally after the detection of nut abrasion loss is completed, pin 13 is pulled out and is rotated by 90 ° from the deep trouth of body 5 and then will
It is imported in shallow slot, makes how no matter test pin 1 contact with the tooth form of screw rod, closes protective cover 9 and with 6 pan head screws 19 with joining
Fishplate bar 4 locks, and can now start shooting and carry out the lifting or decline work of car lifting J-Horner.
Other structures and detecting step are same as Example 1, are not repeating herein.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Although test pin 1, proximity switch mounting seat 2, spring 3, gusset piece 4, body 5, screw thread have more been used herein
Set 6, measurement plate 7, protective cover 8；8 kinds of standard components are：It is locking nut 11, proximity switch 12, pin 13, tapered end holding screw 14, interior
Hex screw 15, soket head cap screw 16, fillister head screw 17, dive key 18, pan head screw 19, locking nut 20, cylindrical end
The grade term of holding screw 21, but it is not precluded from the possibility using other terms.Using these terms just for the sake of more convenient
Ground describes and explains the essence of the present invention；Being construed as any additional limitation is disagreed with spirit of the present invention
's.
Claims (9)
- A kind of 1. detection means for the abrasion of car lifting J-Horner nut, it is characterised in that including：One gusset piece, it is fixed on gusset piece On body and be inserted in set in vivo and can be in the set test pin that axially move and rotate in vivo, detection slightly end setting The truncated conical shape being adapted for screw rod tooth form groove；The other end is inserted in a spring and can remain compression under the action of the spring State；The set is provided with two cylindrical grooves, respectively cylindrical groove one and cylindrical groove two in vivo；The groove footpath of cylindrical groove one is more than post The groove footpath of shape groove two；And the groove footpath of cylindrical groove two is equal to or more than the axial diameter of spring；The both ends of the spring is born against in cylindricality The both ends of groove two；The detection slightly other end is connected after the stretching of cylindrical groove one after being inserted in spring by pin with a thread bush, makes spiral shell Line set can be moved axially and can also rotated simultaneously together with test pin；Measurement apparatus is fixed on thread bush with locking nut And moved with thread bush；Mark component is fixed on gusset piece and can go out the mill of nut by the traverse measurement of measurement plate Consumption；Two are opened on body mutually in 90 degree of groove and one deep one shallow, spring is all the time by test pin press-in screw rod tooth form groove.
- A kind of 2. detection means for the abrasion of car lifting J-Horner nut according to claim 1, it is characterised in that the connection Plate is fixed on tested nut by soket head cap screw, and the upper-lower position that cylinder end clamping fixed screw is used to adjust gusset piece makes detection The head of pin inserts screw rod tooth form groove and away from tooth bottom 1mm and the gapless qualified position in screw rod tooth form both sides, and passes through locking screw It is female locked.
- 3. a kind of detection means for the abrasion of car lifting J-Horner nut according to claim 1, is characterised by, below gusset piece Provided with a guide groove, it is fixed in dive key insertion guide groove and by fillister head screw on nut, gusset piece is made up and down Flat key is directed to during adjustment and is oriented to prevents it to be in correct position all the time from swinging.
- 4. a kind of detection means for the abrasion of car lifting J-Horner nut according to claim 1, it is characterised in that also including one Individual protective cover, protective cover is fixed on gusset piece by pan head screw, above-mentioned thread bush, part body, measurement plate and mark Know component to be arranged in protective cover.
- A kind of 5. detection means for the abrasion of car lifting J-Horner nut according to claim 1, it is characterised in that described mark Knowledge component is a proximity switch component, including proximity switch mounting seat and proximity switch, proximity switch pass through soket head cap screw It is fixed on gusset piece；Proximity switch is installed in proximity switch mounting seat, and the measurement apparatus is a measurement version.
- A kind of 6. detection means for the abrasion of car lifting J-Horner nut according to claim 1, it is characterised in that the mark Component is a graduated scale, and the measurement apparatus is an indicator, by detect the movement of mobile drive indicator slightly from The abrasion loss of graduated scale top nut is not pointed out.
- A kind of 7. detection method for detecting car lifting J-Horner nut abrasion loss, it is characterised in that including：One installation and debugging step：By the head of test pin insert screw rod tooth form groove and away from tooth bottom 1mm and screw rod tooth form both sides continuously Gap is that correct position is as qualified, now proximity switch（ 12）The measurement plate measured（ 7）Distance value with proximity switch is A1, numerical value A1 are arranged to zero when touch-screen is shown；The step of one detection abrasion loss：Car lifting J-Horner nut Abrasion detecting device will decline together with the abrasion of nut, work as nut Abrasion loss when reaching the limiting value 2mm of setting, nut will vertically decline 2.0706mm, and the now head insertion spiral shell of test pin How many axial displacement are produced after bar tooth form groove, according to the definition of trigonometric function:Tangent tan α=h/H, H=h*tan α, wherein, α For 15 degree, result of calculation test pin and measurement plate axial displacement H, the distance of measurement plate and proximity switch is A2=A1+H, by H points Into 20 parts then A2 '=A1+H/20 be abrasion loss.
- A kind of 8. detection method for detecting car lifting J-Horner nut abrasion loss according to claim 7, it is characterised in that detection spiral shell The elevating function of car lifting J-Horner must be stopped during female abrasion loss, be specifically：First open car lifting J-Horner nut Abrasion detecting device Protective cover, hold locking nut and pin pulled out and is rotated by 90 ° in the deep trouth for being then introduced into body from the shallow slot of body, Now test pin contacts the tooth form with screw rod, while measurement plate is also changed with proximity switch distance.
- 9. a kind of detection method for detecting car lifting J-Horner nut abrasion loss according to claim 7, it is characterised in that also wrap Include：One the step of checking and examining；Because test pin can not constantly tracing detection, checked and examined once in the time of interval user setting, complete Into after nut Abrasion detecting, hold locking nut pin is pulled out and is rotated by 90 ° from the deep trouth of body and be then introduced into shallow slot In, make how no matter test pin contact with the tooth form of screw rod, close protective cover and locked with pan head screw and gusset piece, now can Start carries out the lifting of car lifting J-Horner or declines work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510867897.2A CN105277156B (en) | 2015-11-30 | 2015-11-30 | A kind of detection means and detection method for the abrasion of car lifting J-Horner nut |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510867897.2A CN105277156B (en) | 2015-11-30 | 2015-11-30 | A kind of detection means and detection method for the abrasion of car lifting J-Horner nut |
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| CN105277156B true CN105277156B (en) | 2018-03-27 |
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| CN201335766Y (en) * | 2008-12-16 | 2009-10-28 | 中国矿业大学 | Frictional wear testing machine for cylinder sleeve and piston ring |
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| CN205482854U (en) * | 2015-11-30 | 2016-08-17 | 中车长江车辆有限公司 | Detection apparatus for be used for wearing and tearing of car lifting jack nut |
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| JPH04296268A (en) * | 1991-03-25 | 1992-10-20 | Nippon Gear Co Ltd | Valve actuator provided with automatic detecting means for stem nut wear |
| JP3841739B2 (en) * | 2002-10-24 | 2006-11-01 | 西部電機株式会社 | Screw wear detection device |
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|---|---|---|---|---|
| CN201335766Y (en) * | 2008-12-16 | 2009-10-28 | 中国矿业大学 | Frictional wear testing machine for cylinder sleeve and piston ring |
| CN203259672U (en) * | 2013-04-07 | 2013-10-30 | 上海德梅柯汽车装备制造有限公司 | Indirect sensor for nut detection |
| CN104006720A (en) * | 2014-06-13 | 2014-08-27 | 南车长江车辆有限公司 | Bearing axial play measuring device |
| CN205482854U (en) * | 2015-11-30 | 2016-08-17 | 中车长江车辆有限公司 | Detection apparatus for be used for wearing and tearing of car lifting jack nut |
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| 凸焊工装的结构分析及设计参数;刘昌旭;《焊接技术》;20021225;第31卷(第6期);第37-39页 * |
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| CN105277156A (en) | 2016-01-27 |
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Address after: 430212 Jiangxia Economic Development Zone, Wuhan, the new bridge area of the city of Hubei Applicant after: CRRC YANGTZE CO., LTD. Address before: 430212 Jiangxia Economic Development Zone, Wuhan, the new bridge area of the city of Hubei Applicant before: China South Locomotive & Rolling Stock Changjiang Vehicle Company |
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Effective date of registration: 20200701 Address after: No. 358, Yanling East Road, Wujin District, Changzhou City, Jiangsu Province Patentee after: CRRC Changzhou Vehicle Co., Ltd Address before: 430212 new bridge area, Jiangxia Economic Development Zone, Wuhan, Hubei Patentee before: CRRC Yangtze Co.,Ltd. |