CN114165528A - Coupling for width adjusting mechanism of reflow oven - Google Patents
Coupling for width adjusting mechanism of reflow oven Download PDFInfo
- Publication number
- CN114165528A CN114165528A CN202111421945.7A CN202111421945A CN114165528A CN 114165528 A CN114165528 A CN 114165528A CN 202111421945 A CN202111421945 A CN 202111421945A CN 114165528 A CN114165528 A CN 114165528A
- Authority
- CN
- China
- Prior art keywords
- shaft
- deflection
- sleeve
- width adjusting
- spring
- Prior art date
- 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.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 15
- 230000008878 coupling Effects 0.000 title claims abstract description 7
- 238000010168 coupling process Methods 0.000 title claims abstract description 7
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 7
- 210000004907 gland Anatomy 0.000 claims abstract description 7
- 230000033001 locomotion Effects 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005452 bending Methods 0.000 abstract description 2
- 230000008646 thermal stress Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
- F16D3/06—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/26—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/84—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
A shaft coupling for a width adjusting mechanism of a reflow oven relates to the technical field of SMT surface mounting production equipment. The sliding shaft penetrates into the linear sleeve, a spring gland sleeved with the sliding shaft is fixedly connected with the end part of the linear sleeve, and a spring is sleeved on the sliding shaft arranged on the inner side of the linear sleeve; the guide pin penetrates through the linear guide groove, is inserted into the guide pin mounting groove of the sliding shaft and is assembled; a plurality of groups of spiral guide grooves are distributed in the wall of the deflection sleeve, a spiral guide table is arranged at one end of the deflection shaft, and a spiral guide table is arranged on the outer circular surface of the deflection sliding block. Through the guide groove on the linear sleeve, the width adjusting shaft can be freely extended when being heated, and the bending deformation caused by thermal stress is avoided. Through the cooperation of spring and spiral guide way, can realize the normal atmospheric temperature down rotation synchronization, the function of rotation disconnection under the high temperature has guaranteed epaxial wide gear position front-back unanimity, and then guarantees to keep unanimous around the conveying guide rail width all the time.
Description
Technical Field
The invention relates to the technical field of SMT surface mount production equipment, in particular to a coupler for a width adjusting mechanism of a reflow oven.
Background
The reflow oven is a production device widely applied to the field of surface mounting. In order to accommodate circuit substrates of various sizes, reflow soldering apparatuses are generally equipped with a transfer module having a width-adjusting function. The conveying assembly generally comprises a conveying track, a conveying chain, a power unit, a width adjusting mechanism, a tensioning mechanism, a fixing assembly, an automatic oiling system and the like.
The working temperature of a general reflow oven is usually more than 200 ℃, when lead-free solder is used, the temperature in the oven can reach 300 ℃ or more, and the phenomena of expansion with heat and contraction with cold of the material are obvious. The inconsistent expansion amount of the width adjusting rack in the width adjusting mechanism in different temperature intervals can lead to inconsistent positions of the width adjusting gears at different temperature areas on the width adjusting shaft, so that the width of the conveying track is inconsistent before and after and is in a horn mouth shape, and the phenomenon of plate falling or clamping is caused, so that equipment is in failure.
Disclosure of Invention
The invention aims to solve the problems and provides a coupler for a width adjusting mechanism of a reflow oven, so that track deformation caused by asynchronous movement of a rotating shaft before and after expansion of a width adjusting rack can be counteracted under any process temperature condition when the reflow oven works.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a shaft coupling for a width adjusting mechanism of a reflow oven mainly comprises a deflection shaft, a deflection sleeve, a sliding shaft, a linear sleeve, a deflection slide block and a guide pin, wherein the linear sleeve and the deflection sleeve are connected together through a cross rotating center to form a universal joint, and the linear sleeve is provided with symmetrically arranged linear guide grooves;
one end of the sliding shaft is provided with a spring blocking step and a guide pin installation groove, the sliding shaft penetrates into the linear sleeve, a spring gland sleeved with the sliding shaft is fixedly connected with the end part of the linear sleeve, a spring is sleeved on the sliding shaft arranged on the inner side of the linear sleeve, and two sides of the spring are respectively abutted against the spring gland and the spring blocking step; the guide pin penetrates through the linear guide groove, is inserted into the guide pin mounting groove of the sliding shaft and is assembled;
a plurality of groups of spiral guide grooves are distributed in the wall of the deflection sleeve, a spiral guide table is arranged at one end of the deflection shaft, and a spiral guide table is arranged on the outer circular surface of the deflection sliding block; the deflection shaft rotates a certain angle to penetrate into the deflection sleeve and then returns to be positive, and then the deflection sliding block penetrates on the deflection shaft to adjust the angle to push the deflection sleeve.
As a preferred technical scheme of the invention, the coupler for the width adjusting mechanism of the reflow oven comprises:
the end parts of the sliding shaft and the deflection shaft are fixed through locking nuts, the sliding shaft is in threaded connection with the active width adjusting shaft through an end head during assembly of the coupler, the deflection shaft is in threaded connection with the driven width adjusting shaft through an end head, and the compression degree of the spring is adjusted through the screwing-in depth of threads at two ends.
Under the condition of normal temperature, under the action of spring pre-pressure, the linear sleeve and the deflection sleeve are in a locking state, when the active width adjusting shaft rotates clockwise or anticlockwise, power is transmitted to the driven width adjusting shaft through the connector, and axial component force generated on the spiral guide table is not enough to drive the spring to continue to compress, so that the driven shaft is ensured to rotate synchronously; when the width of the track is adjusted to a preset position and then stops rotating, the driving shaft is locked through a brake to keep the position unchanged; after the temperature of the furnace rises to a high temperature, the width adjusting rack of the driven shaft section is heated and extended, the width adjusting gear drives the driven shaft to rotate anticlockwise under the action of spiral guiding, the axial component force acting on the spiral guiding table drives the spring to compress and deform, and the horizontal motion of the driven shaft is converted into axial motion, so that the width adjusting gear on the driving/driven shaft is always kept at the same position, and the width of the conveying guide rail is kept consistent from front to back.
Compared with the prior art, the invention has the beneficial effects that:
1. through the guide groove on the linear sleeve, the width adjusting shaft can be freely extended when being heated, and the bending deformation caused by thermal stress is avoided.
2. The universal joint is arranged in the middle of the coupler, and can adapt to deviation generated in the process of processing and assembling a driving shaft/a driven shaft within a certain range.
3. Through the cooperation of spring and spiral guide way, can realize the normal atmospheric temperature down rotation synchronization, the function of rotation disconnection under the high temperature has guaranteed epaxial wide gear position front-back unanimity, and then guarantees to keep unanimous around the conveying guide rail width all the time.
Drawings
Fig. 1 is an exploded view of a coupler for a width adjusting mechanism of a reflow oven according to the present invention.
Fig. 2 is a schematic view of an assembly structure of the coupling in two temperature states.
The device comprises a deflection shaft 1, a cross rotation center 2, a deflection sleeve 3, a sliding shaft 4, a set screw 5, a linear sleeve 6, a spring gland 7, a locking nut 8, a hexagon socket head cap screw 9, a spring washer 10, a spring 11, a fixing nut 12, a deflection sliding block 13, a guide pin 14, a driving width adjusting shaft 15, a driven width adjusting shaft 16, a spring blocking step 17, a guide pin mounting groove 18 and a linear guide groove 19.
Detailed Description
As shown in fig. 1, a shaft coupling for a width adjusting mechanism of a reflow oven mainly comprises a deflection shaft 1, a cross rotation center 2, a deflection sleeve 3, a sliding shaft 4, a linear sleeve 6, a spring gland 7, a lock nut 8, a spring 11, a deflection slider 13 and a guide pin 14. In order to keep the cleanness and the high-temperature structural strength in the hearth, all the components are preferably made of stainless steel materials.
In order to eliminate the deviation generated in the process of processing and assembling the driving/driven shafts, the linear sleeve 6 and the deflection sleeve 3 form a universal joint through the cross-shaped rotating center 2.
One end of the sliding shaft 4 inserted into the linear sleeve 6 is provided with a spring blocking step 17 and a guide pin mounting groove 18, one end of the sliding shaft 4 is inserted into the linear sleeve 6, the guide pin 14 is inserted into the guide pin mounting groove 18 of the sliding shaft 4 from a linear guide groove 19 symmetrically arranged on the linear sleeve 6, and the guide pin 14 and the sliding shaft 4 are fixed by the fastening bolt 5 and the fixing nut 12, so that the sliding shaft 4 can only axially move in the linear guide groove 19.
The spring 11 is inserted into the sliding shaft 4 and pushed into the linear sleeve 6, and then the spring cover 7 is connected with the linear sleeve 6 by using the socket head cap screw 9 and the spring washer 10. The end of the sliding shaft 4 is then screwed with a locking nut 8. The deflection shaft 1 rotates for a certain angle and penetrates into the deflection sleeve 3 to be aligned, then the deflection sliding block 13 penetrates through the deflection shaft 1 to adjust the angle and push the deflection sleeve 3, and finally the locking nut is screwed into the deflection shaft 1. The locking nut adopts a T-shaped structure, and a plurality of groups of radial positioning holes are arranged on the circumferential surface.
Referring to fig. 2, during assembly, the sliding shaft 4 and the driving width adjusting shaft 15 in the coupler are connected through end threads, the deflecting shaft 1 and the driven width adjusting shaft 16 are connected through end threads, and the compression degree of the spring 11 can be adjusted through the screwing depth of the threads at the two ends. The working principle of the invention is as follows:
under the normal temperature condition, under the action of the spring pre-pressure in a compressed state, the linear sleeve and the deflection sleeve are in a locked state, when the active width adjusting shaft rotates clockwise or anticlockwise, power is transmitted to the driven width adjusting shaft through the connector, and at the moment, axial component force generated on the spiral guide table is not enough to drive the spring to continue to compress, so that the driven shaft is ensured to rotate synchronously.
When the track width is adjusted to a preset position and then stops rotating, the driving shaft is locked through a brake to keep the position unchanged.
After the temperature of the furnace rises to a high temperature, the width adjusting rack of the driven shaft section is heated to extend, under the action of spiral guiding, the width adjusting gear drives the driven shaft to rotate anticlockwise, the axial component force acting on the spiral guiding table drives the spring to compress and deform (further compressed compared with a normal temperature state), and the horizontal motion of the driven shaft is converted into axial motion (the coupler moves towards one side of the driven width adjusting shaft), so that the width adjusting gear on the driving/driven shaft is always kept at the same position, and the width of the transmission guide rail is kept consistent from front to back.
The foregoing is merely exemplary and illustrative of the principles of the present invention and various modifications, additions and substitutions of the specific embodiments described herein may be made by those skilled in the art without departing from the principles of the present invention or exceeding the scope of the claims set forth herein.
Claims (3)
1. A shaft coupling for a width adjusting mechanism of a reflow oven is characterized by mainly comprising a deflection shaft, a deflection sleeve, a sliding shaft, a linear sleeve, a deflection sliding block and a guide pin, wherein the linear sleeve and the deflection sleeve are connected together through a cross rotating center to form a universal joint, and the linear sleeve is provided with symmetrically arranged linear guide grooves;
one end of the sliding shaft is provided with a spring blocking step and a guide pin installation groove, the sliding shaft penetrates into the linear sleeve, a spring gland sleeved with the sliding shaft is fixedly connected with the end part of the linear sleeve, a spring is sleeved on the sliding shaft arranged on the inner side of the linear sleeve, and two sides of the spring are respectively abutted against the spring gland and the spring blocking step; the guide pin penetrates through the linear guide groove, is inserted into the guide pin mounting groove of the sliding shaft and is assembled;
a plurality of groups of spiral guide grooves are distributed in the wall of the deflection sleeve, a spiral guide table is arranged at one end of the deflection shaft, and a spiral guide table is arranged on the outer circular surface of the deflection sliding block; the deflection shaft rotates a certain angle to penetrate into the deflection sleeve and then returns to be positive, and then the deflection sliding block penetrates on the deflection shaft to adjust the angle to push the deflection sleeve.
2. The coupler for the width adjusting mechanism of the reflow oven as claimed in claim 1, wherein the ends of the sliding shaft and the deflecting shaft are fixed by locking nuts, the sliding shaft is connected with the driving width adjusting shaft through end threads during the assembly of the coupler, the deflecting shaft is connected with the driven width adjusting shaft through end threads, and the compression degree of the spring is adjusted through the screwing depth of the threads at both ends.
3. The coupler for the width adjusting mechanism of the reflow oven as claimed in claim 2, wherein under normal temperature conditions, under the action of the pre-pressure of the spring, the linear sleeve and the deflection sleeve are in a locked state, when the active width adjusting shaft rotates clockwise or counterclockwise, power is transmitted to the driven width adjusting shaft through the connector, and at the moment, the axial component force generated on the spiral guide table is not enough to drive the spring to continue to compress, so that the driven shaft is ensured to rotate synchronously; when the width of the track is adjusted to a preset position and then stops rotating, the driving shaft is locked through a brake to keep the position unchanged; after the temperature of the furnace rises to a high temperature, the width adjusting rack of the driven shaft section is heated and extended, the width adjusting gear drives the driven shaft to rotate anticlockwise under the action of spiral guiding, the axial component force acting on the spiral guiding table drives the spring to compress and deform, and the horizontal motion of the driven shaft is converted into axial motion, so that the width adjusting gear on the driving/driven shaft is always kept at the same position, and the width of the conveying guide rail is kept consistent from front to back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111421945.7A CN114165528B (en) | 2021-11-26 | 2021-11-26 | Coupling for width adjusting mechanism of reflow oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111421945.7A CN114165528B (en) | 2021-11-26 | 2021-11-26 | Coupling for width adjusting mechanism of reflow oven |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114165528A true CN114165528A (en) | 2022-03-11 |
| CN114165528B CN114165528B (en) | 2024-01-30 |
Family
ID=80481116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111421945.7A Active CN114165528B (en) | 2021-11-26 | 2021-11-26 | Coupling for width adjusting mechanism of reflow oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114165528B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114739458A (en) * | 2022-04-18 | 2022-07-12 | 中国航发沈阳发动机研究所 | Double-channel high-temperature measurement structure for simulating afterburner inlet flow field |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB171201A (en) * | 1920-08-20 | 1921-11-17 | Walter Scott | Spring drive for motor cars, motor cycles and the like |
| GB932474A (en) * | 1958-11-24 | 1963-07-24 | Dba Sa | Improvements in or relating to telescopic shafts |
| US4270367A (en) * | 1978-03-03 | 1981-06-02 | Michael Santore | Spring loaded adjustable coupling |
| GB8711700D0 (en) * | 1987-05-18 | 1987-06-24 | Green P C | Mechanical coupling |
| US20040235573A1 (en) * | 2003-05-21 | 2004-11-25 | Da Silva Jose P. | Rolling ball spline slip joint with helically shaped cage |
| DE102009010384A1 (en) * | 2009-02-26 | 2010-09-02 | Schaeffler Technologies Gmbh & Co. Kg | Adjusting device for e.g. valve camshaft, of valve-train assembly of internal-combustion engine, has inner tap-like shaped parts cooperating with chamfered section on part of shaft in relation to outer tap-like shaped parts |
| WO2011051378A2 (en) * | 2009-10-29 | 2011-05-05 | Schaeffler Technologies Gmbh & Co. Kg | Fastening assembly of a camshaft adjuster |
| US20150372563A1 (en) * | 2013-02-28 | 2015-12-24 | Nidec Sankyo Corporation | Motor device |
| CN206953680U (en) * | 2017-07-26 | 2018-02-02 | 江苏方邦机械有限公司 | A kind of axial attachment means and paper bag machine |
| CN108200732A (en) * | 2018-01-25 | 2018-06-22 | 东莞市创威自动化科技有限公司 | A kind of hot air type reflow soldering |
| CN210318297U (en) * | 2019-08-16 | 2020-04-14 | 东莞市培尔电子有限公司 | Novel damper |
-
2021
- 2021-11-26 CN CN202111421945.7A patent/CN114165528B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB171201A (en) * | 1920-08-20 | 1921-11-17 | Walter Scott | Spring drive for motor cars, motor cycles and the like |
| GB932474A (en) * | 1958-11-24 | 1963-07-24 | Dba Sa | Improvements in or relating to telescopic shafts |
| US4270367A (en) * | 1978-03-03 | 1981-06-02 | Michael Santore | Spring loaded adjustable coupling |
| GB8711700D0 (en) * | 1987-05-18 | 1987-06-24 | Green P C | Mechanical coupling |
| US20040235573A1 (en) * | 2003-05-21 | 2004-11-25 | Da Silva Jose P. | Rolling ball spline slip joint with helically shaped cage |
| DE102009010384A1 (en) * | 2009-02-26 | 2010-09-02 | Schaeffler Technologies Gmbh & Co. Kg | Adjusting device for e.g. valve camshaft, of valve-train assembly of internal-combustion engine, has inner tap-like shaped parts cooperating with chamfered section on part of shaft in relation to outer tap-like shaped parts |
| WO2011051378A2 (en) * | 2009-10-29 | 2011-05-05 | Schaeffler Technologies Gmbh & Co. Kg | Fastening assembly of a camshaft adjuster |
| US20150372563A1 (en) * | 2013-02-28 | 2015-12-24 | Nidec Sankyo Corporation | Motor device |
| CN206953680U (en) * | 2017-07-26 | 2018-02-02 | 江苏方邦机械有限公司 | A kind of axial attachment means and paper bag machine |
| CN108200732A (en) * | 2018-01-25 | 2018-06-22 | 东莞市创威自动化科技有限公司 | A kind of hot air type reflow soldering |
| CN210318297U (en) * | 2019-08-16 | 2020-04-14 | 东莞市培尔电子有限公司 | Novel damper |
Non-Patent Citations (1)
| Title |
|---|
| 储婷婷;朱德泉;朱宏;张顺;蒋锐;张俊;: "螺旋轴式移箱机构多学科协同优化与试验", 浙江农业学报, no. 11, pages 147 - 158 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114739458A (en) * | 2022-04-18 | 2022-07-12 | 中国航发沈阳发动机研究所 | Double-channel high-temperature measurement structure for simulating afterburner inlet flow field |
| CN114739458B (en) * | 2022-04-18 | 2023-11-03 | 中国航发沈阳发动机研究所 | Dual-channel high-temperature measurement structure for simulating afterburner inlet flow field |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114165528B (en) | 2024-01-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114165528A (en) | Coupling for width adjusting mechanism of reflow oven | |
| EP0171156B1 (en) | Shaft coupling | |
| KR102507323B1 (en) | Double-Flex Spline Harmonic Reducer with Limited Deformation | |
| CN110757140A (en) | Nut screwing device | |
| CN211361282U (en) | Nut screwing device | |
| CN109595333B (en) | Device for eliminating transmission gear gap in gear box | |
| CN216111824U (en) | Adjustable safety coupling | |
| CN212839233U (en) | Pretightening force adjustable high-bearing planetary roller screw pair structure | |
| CN210715525U (en) | Anti-loose combined fastener with precise structure | |
| CN212480038U (en) | Anti-backlash nut for improving precision of ball screw | |
| CN210978407U (en) | Simple gearbox | |
| CN114147659A (en) | Electric wrench capable of being adjusted in self-adaptive mode | |
| CN215890849U (en) | Adjustable high-precision limiting universal joint | |
| CN219073915U (en) | Novel connection structure of short stress line rolling mill screwdown device | |
| CN218347810U (en) | Pull rod type metal elastic coupling | |
| CN209943452U (en) | Gear rack meshing mechanism | |
| CN220081973U (en) | Hydraulic coupling | |
| CN212616121U (en) | Gear set and camera with same | |
| CN218002145U (en) | Novel torque limiter mechanism on tunnel oven driving shaft combination | |
| CN101865215B (en) | High-precision coaxial coupling mechanism | |
| CN221299877U (en) | Intermediate coupling of roller straightener | |
| CN221347661U (en) | Coupling with anti-drop structure | |
| CN220268368U (en) | Electric cylinder reduction gearbox and gear reduction box type electric cylinder | |
| CN218475113U (en) | A installation positioner for SNCR spray gun | |
| KR100569033B1 (en) | A coupling structure of rack gear and pinion gear protected from movement delay by play |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |