CN209319676U - Multi-functional omnidirectional's hydraulic dismounting device - Google Patents
Multi-functional omnidirectional's hydraulic dismounting device Download PDFInfo
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- CN209319676U CN209319676U CN201821876153.2U CN201821876153U CN209319676U CN 209319676 U CN209319676 U CN 209319676U CN 201821876153 U CN201821876153 U CN 201821876153U CN 209319676 U CN209319676 U CN 209319676U
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- hydraulic
- hollow top
- lead screw
- assembling
- dismounting device
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- 230000008676 import Effects 0.000 claims description 4
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- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract description 2
- 239000007787 solid Substances 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000011900 installation process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000009527 percussion Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a kind of multi-functional omnidirectional's hydraulic dismounting devices, including the hollow top of lead screw, locking nut, one-way hydraulic, sleeve body, importing, the round Le plate, electric hydraulic pump, adapter block, gasket of export.Lead screw runs through carrier, and the vertical hole that dismounts is placed and fixed, using electric hydraulic pump as power source, transmitting forces give one-way hydraulic hollow top, in macrotype axes series, axle sleeve, bearing class disassembly process, apply an extrapolability F in the other side of assembling, the two exerts a force simultaneously.The beneficial effects of the utility model are: contraposition centering when need crawl electric hydraulic pump, after centering electric hydraulic pump can continuous oiling, installation end face it is not damaged；According to the type of attachment that the type of assembling, selection are suitble to assembling, reach the connection of lead screw from different assemblings, dismounting angle is not limited by dismounting hole placement position；Assembling through part reduces high altitude operation construction risk coefficient, is convenient to use and carry without diagonal fracture phenomenon is pulled out, and realizes omnidirectional's function fast assembling-disassembling.
Description
Technical field
The utility model belongs to machine-building and mounting technique field, is suitable for the works such as various operating condition lower axles, axle sleeve, bearing
The dismounting work of part, more particularly to a kind of multi-functional omnidirectional's hydraulic dismounting device.
Background technique
During machine-building and installation, the dismounting of axis, bearing, axle sleeve-like workpieces is frequently encountered.Small-sized axle sleeve, axis
The dismounting for holding class workpiece, which can be used, draws the equipment such as horse, and the scope of application is small, there is limitation.Axis, large-scale axle sleeve and large size bearing class work
The dismounting of part generally uses hammering method, and principle is to swing generated impact force using weight, percussion hammer or copper rod to complete axis, axis
The dismounting of set, bearing class workpiece, is not only easy to cause shaft end surface damage and gnaws through contact surface and bite, and the components such as percussion hammer is fast
Fast movement is applied by manpower, and generated impact force is limited, and there are large labor intensity, working efficiency is low, danger coefficient is high, raw
Produce it is at high cost, be easily damaged the drawbacks such as installation part.
Summary of the invention
The technical problem to be solved by the utility model is to provide it is a kind of dismounting axis, axle sleeve, bearing class workpiece it is multi-functional
Omnidirectional's hydraulic dismounting device.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is: a kind of multi-functional omnidirectional's hydraulic detachment
Fill device, including the hollow top of lead screw, locking nut I, one-way hydraulic, sleeve body, locking nut II, the round Le plate of importing, export circle
Shape strangles plate, electric hydraulic pump, adapter block, gasket.Lead screw is round bar, and diameter should be less than list in the case where meeting and dismounting stress
To the installation internal diameter on hydraulic hollow top, length should meet the functional requirement through all components thereon in dismounting.Lead screw
One end be it is rectangular, facilitate the screw thread of lead screw and assembling close.Lead screw is equipped with screw thread, spiral shell in the hollow top bearing of one-way hydraulic
Line length should meet the use function of locking nut I, when the dismounting power of assembling is big, need to be further added by a locking nut I, really
The utility model that breaks even safety, work well；The convenient disassembly of locking nut I when being withdrawn for the hollow top of one-way hydraulic, when fastening
Two screw buckle length should be reserved on lead screw；The damage in one-way hydraulic hollow top face in order to prevent, in locking nut I and unidirectionally
Gasket is set between hydraulic hollow top, and the internal diameter of gasket should ensure that lead screw penetrates, and outer diameter should be greater than the hollow top internal diameter of one-way hydraulic, thick
Degree should meet the stress in disassembly process.The other end of lead screw and assembling connecting pin are equipped with screw thread, when assembling is axis class work
When part, threads of lead screw diameter should be consistent with the lifting threaded hole of the auxiliary on axis herein, and reach cannot be less than the auxiliary on axis
Lift screw thread hole depth；When assembling is axle sleeve, bearing class workpiece, threads of lead screw diameter is less than axle sleeve and bearing bore diameter herein,
Reach should ensure that locking nut II is importing round Le plate and the round effect of being fixedly clamped for strangling board ends of export.Unidirectional liquid
Press hollow top and electric hydaulic pump type that should be selected according to the stress condition in disassembly process, the hollow top of one-way hydraulic passes through oil pipe
Connect electric hydraulic pump.In face of longer assembling, when the range on the hollow top of one-way hydraulic, which is not able to satisfy dismounting, to be required, close
Electric hydraulic pump is closed, adds an adapter block at locking nut I to extend the stroke on the hollow top of one-way hydraulic, the length of adapter block
Degree should meet assembling and reach specified position, and adapter block inner hole should meet lead screw and run through, and outer dimension should meet in installation process
Force request, adapter block installation similarly plays the role of protect one-way hydraulic hollow top face, it is all at this time
Use gasket.One-way hydraulic hollow top side is equipped with sleeve body and connect with dismounting hole, and sleeve body is welded by round steel pipe and round plate
It forms, the contraposition centering work in circular shape easy disassembly hole, pipe diameter should be greater than dismounting bore dia, and plate diameter of bore is answered
Greater than the outer diameter contacted with lead screw, plate outside diameter is not less than outer diameter of steel pipes, and thickness of steel pipe and plate plate thickness should meet dismounting
Stress in the process, the length of sleeve body should meet the length placed after demolition part disassembly when dismantling operation；In order to ensure precision,
Sleeve body should be machined with dismounting hole contact surface and the hollow top contact level of one-way hydraulic；Sleeve body is equipped with lifting lug, in large-scale workpiece
Dismounting when, play the role of lifting.In the dismounting of axle sleeve and bearing class workpiece, it is equipped with and imports round floor and export circular rib
Plate；In order to facilitate dismounting, importing round floor and export circle floor outer diameter should be 0.5- fewer than axle sleeve or bearing class workpiece outer diameter
1mm；The internal diameter for importing round floor and exporting circle floor should ensure that lead screw can run through, and plate thickness should meet in disassembly process
Stress.The inlet for importing round floor is equipped with guide angle, only works during the installation process, guide angle situation and mounting hole
Precision is related, it can be achieved that quickly, smoothly importing；It importing round floor, assembling, exporting round floor outer dimension alignment
Afterwards, it is fastened using locking nut II.
Working principle are as follows: according to the type of attachment that the type of assembling, selection are suitble to assembling, axis class passes through end
Auxiliary lifting threaded hole is connected through a screw thread with lead screw；Circle strangles plate and the round plate of strangling of export presss from both sides by importing for axle sleeve, bearing class
Tightly, both ends are fixed by locking nut II, reach the connection of lead screw from different assemblings, realize multi-functional.Lead screw is that this is practical
Novel runs through carrier, and the vertical hole that dismounts is placed and fixed, therefore dismounts angle and do not limited by dismounting hole placement position, realizes complete
To function.For the utility model using electric hydraulic pump as power source, transmitting forces give one-way hydraulic hollow top, and one-way hydraulic is hollow
Push up front end be equipped with locking nut I, when locking nut I is encountered in the hollow top extension end of one-way hydraulic, drive assembling loading or
Disassembly；But in macrotype axes series, axle sleeve, bearing class disassembly process, the pulling force that cannot be provided by the hollow top of one-way hydraulic merely,
It also needs to apply an extrapolability F in the other side of assembling, the two exerts a force simultaneously realizes dismounting function.
The beneficial effects of the utility model are:
1. structure is simple: using screw rod as through carrier, do not controlled by hydraulic pressure unit piston length, make the utility model
Application range it is wider；Structure organization form is simple, does not have to production machine frame structure, carries, is easy to assembly.
2. multi-functional: suitable for axis class, the dismounting of axle sleeve and bearing class workpiece, overcoming simple function.
3. omni-directional: lead screw is the utility model through carrier, and the vertical hole that dismounts is placed and fixed, therefore dismounts angle
It is not limited by the placement position in dismounting hole, realizes omnidirectional's function.
4. working efficiency and highly-safe: in macrotype axes series, axle sleeve, bearing class installation process, applying an extrapolability
F, the two exerts a force simultaneously can be achieved safety, quickly dismounting；It is easy to use, it is easy to carry, reduce high altitude operation construction risk system
Number.
5. product quality is high: contraposition centering when need crawl electric hydraulic pump, after centering electric hydraulic pump can continuous oiling, make
Not damaged with this utility model installation end face, installation part through part is without pulling out diagonal fracture phenomenon.
Detailed description of the invention
Fig. 1 is that a kind of multi-functional omnidirectional's hydraulic dismounting device of the utility model installs small shafts at 21 ° of horizontal sextant angle
Workpiece schematic front view；
Fig. 2 is the A view of Fig. 1；
Fig. 3 is the lead screw of the utility model and the connection schematic front view of connected axis；
Fig. 4 is the B view of Fig. 3；
Fig. 5 is that a kind of multi-functional omnidirectional's hydraulic dismounting device of the utility model installs large-scale shaft workpiece at 6 ° of horizontal sextant angle
Schematic front view；
Fig. 6 is that a kind of multi-functional omnidirectional's hydraulic dismounting device of the utility model dismantles small shafts work at 51 ° of horizontal sextant angle
Part schematic front view；
Fig. 7 is that a kind of multi-functional omnidirectional's hydraulic dismounting device of the utility model dismantles macrotype axes series work at 12 ° of horizontal sextant angle
Part schematic front view；
Fig. 8 is that a kind of multi-functional omnidirectional's hydraulic dismounting device of the utility model installs small-size shaft at 43.4 ° of horizontal sextant angle
Hold class workpiece schematic front view；
Fig. 9 is the connection schematic front view of lead screw Yu connected bearing；
Figure 10 is the I enlarged diagram of Fig. 8；
A kind of multi-functional omnidirectional's hydraulic dismounting device of Figure 11 the utility model dismantles large-scale shaft sleeve at 35.7 ° of horizontal sextant angle
Workpiece schematic front view.
In figure:
1, lead screw 2, locking nut I 3, the hollow top of one-way hydraulic
4, axle sleeve backing plate 5, hydrodynamic press pump 6, locking nut II
7, round Le plate 8 is imported, export circle strangles plate 9, adapter block
10, gasket
Specific embodiment
The multi-functional omnidirectional's hydraulic dismounting device of the utility model is illustrated below with reference to examples and drawings.
As shown in Figure 1 to 11, a kind of multi-functional omnidirectional's hydraulic dismounting device, comprising: the hollow top 3 of lead screw 1, one-way hydraulic,
Sleeve body 4, electric hydraulic pump 5,1 front end of lead screw are equipped with the external screw thread that is connected and fixed with mounted workpiece, rear end be set as with
Assembling screw thread is the rectangular of conjunction and has sequentially passed through the hollow top of sleeve body 4, one-way hydraulic and locking nut I 2, one-way hydraulic sky
Heart top is connected with electric hydraulic pump 5.Sleeve body 4 is equipped with the lifting lug for lifting.The hollow top of one-way hydraulic and locking nut I 2
Between be equipped with extend one-way hydraulic it is hollow top 3 strokes adapter block 9.
Embodiment one
It is as shown in Figure 1, Figure 2, Figure 3, Figure 4 that small shafts workpiece is installed, installation large-scale shaft workpiece is as shown in figure 5, specific
Process is as follows:
Step 1 selects the components and lifting appliance of suitable dimension model according to in-site installation situation, in work progress
Small shafts workpiece manually holds in the palm and hangs, and macrotype axes series cooperate suitable lifting equipment, has lifting lug at sleeve body 4, can cooperate lifting
Equipment provides pulling force N.
Step 2 lifts sleeve body 4, marks the position concentric locating point with mounting hole.
Step 3 interts lead screw 1 in the other side, the square end of solid lead screw 1 is clamped, by silk by axis hanging near mounting hole
Thick stick 1 is threadedly coupled in the auxiliary lifting threaded hole of axis.
Step 4, adjusting screw 1 are aligned with installation centerline hole, the shaft end of axis are embedded in mounting hole, according to step 2
On anchor point installation set cylinder 4, gasket 11 and the hollow top 3 of one-way hydraulic, it is ensured that lead screw 1 and position of mounting hole precision, it is small-sized
The installation of axis is fixed with a locking nut I, and the installation of big profile shaft is fixed with two locking nuts I, and reserves two screw buckles
Length.
Step 5, the hollow top 3 of connection one-way hydraulic and electric hydraulic pump 5.
Step 6, crawl electric hydraulic pump 5 give one-way hydraulic 3 oilings of hollow top, and dragging axis progresses into mounting hole, completes
The contraposition centering of axis.
Step 7, small shafts installation provide axis to the hollow top 3 of one-way hydraulic by the continuous oiling of electric hydraulic pump 5 and draw
Power, until being installed；In addition to this installation of macrotype axes series, will also apply an extrapolability F in the other side of axis, the two is same
When exert a force.
Step 8 turns off electric hydraulic pump 5 when the installation of macrotype axes series reaches the range on one-way hydraulic hollow top 3,
The hollow top 3 of one-way hydraulic returns initial position, to lay down locking nut I, gasket 10, installs adapter block 9, locking nut I is solid again
It is fixed, and reserve two screw buckle length.
Step 9 repeats step 7 operation and is installed until big profile shaft reaches designated position.
Embodiment two
Small shafts workpiece is dismantled as shown in fig. 6, disassembly large-scale shaft workpiece is as shown in fig. 7, detailed process is as follows:
Step 1 selects the components and lifting appliance of suitable dimension model according to in-site installation situation, in work progress
Small shafts workpiece manually holds in the palm and hangs, and macrotype axes series cooperate suitable lifting equipment, has lifting lug at sleeve body 4, can cooperate lifting
Equipment provides pulling force N.
Step 2 lifts sleeve body 4, marks the position concentric locating point with removal hole.
Step 3, lead screw 1, which is lifted into disassembly axis, auxiliary lifting threaded hole side, clamps the square end of solid lead screw 1, installs silk
In thick stick 1 to the auxiliary lifting threaded hole of axis.
Step 4, according to anchor point sleeve body 5, gasket 11 and the hollow top 3 of one-way hydraulic in step 2, small-size shaft is torn open
It unloads and is fixed with a locking nut I, the disassembly of big profile shaft is fixed with two locking nuts I, and reserves two screw buckles.
Step 5, the hollow top 3 of connection one-way hydraulic and electric hydraulic pump 5.
Step 6, crawl electric hydraulic pump 5 give one-way hydraulic 3 oilings of hollow top, and dragging axis gradually leaves mounting hole entrance
Sleeve body 4 completes the contraposition centering of axis.
Step 7, small shafts disassembly continuously oiling can provide disassembly axis pulling force by electric hydraulic pump 5, until having dismantled
At；In addition to this disassembly of macrotype axes series, will also apply an extrapolability F in the other side of axis, two force-fittings are until axis is fallen
To sleeve body 4, reach disassembly purpose.
Step 8 turns off electric hydraulic pump 5 when the disassembly of macrotype axes series reaches the range on one-way hydraulic hollow top 3,
The hollow top 3 of one-way hydraulic returns initial position, to lay down locking nut I, gasket 10, installs adapter block 9, locking nut I is solid again
It is fixed, and reserve two screw buckle length.
Step 9 repeats step 6 operation until axis is dropped down onto sleeve body 4 and reaches disassembly purpose.
Embodiment three
Axle sleeve-like workpieces and bearing class workpiece are installed, structural principle is identical with form, by taking small size bearing class workpiece as an example, such as
Shown in Fig. 8, Fig. 9, Figure 10, detailed process is as follows:
Step 1 selects the components and lifting appliance of suitable dimension model according to in-site installation situation, in work progress
Small shafts workpiece manually holds in the palm and hangs, and macrotype axes series cooperate suitable lifting equipment, has lifting lug at sleeve body 4, can cooperate lifting
Equipment provides pulling force N.
Step 2 lifts sleeve body 4, marks the position concentric locating point with removal hole.
Step 3, the plugging wire thick stick 1 at mounting hole.
Bearing class workpiece is placed on the round Le plate 7 of importing and export in the connecting pin of lead screw 1 and installation part by step 4
Between circle strangles plate 8, after adjustment outer diameter and center line are aligned, round plate 7 of strangling will be imported and be equipped with guide angle end alignment installation interface,
The setting of guide angle size is fixed on 1 one end of lead screw by locking nut II referring specifically to Figure 10, both direction, forms assembly.
Step 5 installs sleeve body 4 and the hollow top of one-way hydraulic 3, gasket 11 according to the anchor point in step 2, it is ensured that silk
Thick stick 1 and position of mounting hole precision, it is fixed with locking nut I, and reserve two screw buckle length.
Step 6, the hollow top 3 of connection one-way hydraulic and electric hydraulic pump 5.
Step 7, crawl electric hydraulic pump 5 give one-way hydraulic 5 oilings of hollow top, and dragging imports round floor 7 and progresses into
Mounting hole completes the contraposition centering of bearing.
Step 8, small shafts installation provide axis to the hollow top 3 of one-way hydraulic by the continuous oiling of electric hydraulic pump 5 and draw
Power, until being installed；In addition to this installation of macrotype axes series, will also apply an extrapolability F in the other side of axis, the two is same
When exert a force.
Step 9 turns off electric hydraulic pump 5 when the disassembly of large size bearing reaches the range on one-way hydraulic hollow top 3,
The hollow top 3 of one-way hydraulic returns initial position, to lay down locking nut I, gasket 10, installs adapter block 9, locking nut I is solid again
It is fixed, and reserve two screw buckle length.
Step 10 repeats step 8 operation and is installed until big profile shaft reaches designated position.
Example IV
Axle sleeve-like workpieces and bearing class workpiece are dismantled, structural principle is identical with form, is to dismantle large-scale axle sleeve-like workpieces
Example, as shown in figure 11, detailed process is as follows:
Step 1 selects the components and lifting appliance of suitable dimension model according to in-site installation situation, in work progress
Small shafts workpiece manually holds in the palm and hangs, and macrotype axes series cooperate suitable lifting equipment, has lifting lug at sleeve body 4, can cooperate lifting
Equipment provides pulling force N.
Step 2 lifts sleeve body 4, marks the position concentric locating point with removal hole.
Step 3, the plugging wire thick stick 1 at demolition part inner hole.
Step 4 sequentially passes through locking nut II, the round Le plate 7 of importing, axle sleeve, the round Le plate 8, locking nut II of export
Onto lead screw 1, after adjustment outer diameter and center line alignment, both direction is fixed on 1 one end of lead screw by locking nut II, is formed
Assembly.
Step 5 installs sleeve body 4 and the hollow top of one-way hydraulic 3, gasket 11 according to the anchor point in step 2, with locking
Nut I is fixed, and the disassembly of small size bearing is fixed with a locking nut I, and the bearing of large size bearing is solid with two locking nuts I
It is fixed, and reserve two screw buckle length.
Step 6, the hollow top 3 of connection one-way hydraulic and electric hydraulic pump 5.
Step 7, crawl electric hydraulic pump 5 give one-way hydraulic 3 oilings of hollow top, and dragging imports round floor 7 and gradually leaves
Removal hole completes the contraposition centering of disassembly axle sleeve.
Step 8, small-sized axle sleeve disassembly continuously oiling can provide disassembly axis pulling force by electric hydraulic pump 5, until having dismantled
At；In addition to this disassembly of large-scale axle sleeve, will also apply an extrapolability F, two force-fittings in the other side of axis.
Step 9 turns off electric hydraulic pump 5 when the disassembly of large-scale axle sleeve reaches the range on one-way hydraulic hollow top 3,
The hollow top 3 of one-way hydraulic returns initial position, to lay down locking nut I, gasket 10, installs adapter block 9, locking nut I is solid again
It is fixed, and reserve two screw buckle length.
Step 10 repeats step 6 operation until axle sleeve is dropped down onto sleeve body 4 and reaches disassembly purpose.
Claims (7)
1. a kind of multi-functional omnidirectional's hydraulic dismounting device, comprising: the hollow top (3) of lead screw (1), one-way hydraulic, sleeve body (4), electronic
Hydraulic pump (5), it is characterized in that: the lead screw (1) front end is equipped with the external screw thread being connected and fixed with mounted workpiece, rear end is set
The rectangular of conjunction and to have sequentially passed through the hollow top of sleeve body (4), one-way hydraulic and locking nut I (2), institute with assembling screw thread
The hollow top of one-way hydraulic is stated to be connected with electric hydraulic pump (5).
2. a kind of multi-functional omnidirectional's hydraulic dismounting device according to claim 1, it is characterized in that: being set on the sleeve body (4)
There is the lifting lug for lifting.
3. a kind of multi-functional omnidirectional's hydraulic dismounting device according to claim 1, it is characterized in that: the hollow top of the one-way hydraulic
The adapter block (9) for extending hollow top (3) stroke of one-way hydraulic is equipped between locking nut I (2).
4. a kind of multi-functional omnidirectional's hydraulic dismounting device according to any one of claims 1 to 3, it is characterized in that: the installation
Workpiece is axis class assembling.
5. a kind of multi-functional omnidirectional's hydraulic dismounting device according to any one of claims 1 to 3, it is characterized in that: the lead screw
(1) front end has penetrated axle sleeve or bearing class is mounted workpiece.
6. a kind of multi-functional omnidirectional's hydraulic dismounting device according to claim 5, it is characterized in that: the axle sleeve or bearing are pacified
Workpiece setting is filled to import circle Le plate (7), exporting round strangle between plate (8) and through importing circle Le plate (7), the round Le of export
Locking nut II (6) on the outside of plate (8) is fixed.
7. a kind of multi-functional omnidirectional's hydraulic dismounting device according to claim 6, it is characterized in that: the importing is round to strangle plate
(7) inlet is equipped with installation guide angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821876153.2U CN209319676U (en) | 2018-11-14 | 2018-11-14 | Multi-functional omnidirectional's hydraulic dismounting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821876153.2U CN209319676U (en) | 2018-11-14 | 2018-11-14 | Multi-functional omnidirectional's hydraulic dismounting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209319676U true CN209319676U (en) | 2019-08-30 |
Family
ID=67710268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821876153.2U Expired - Fee Related CN209319676U (en) | 2018-11-14 | 2018-11-14 | Multi-functional omnidirectional's hydraulic dismounting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209319676U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111070160A (en) * | 2020-01-17 | 2020-04-28 | 舒昕日化科技有限公司 | Method for disassembling vacuum carrier roller type shaft core of high-speed living paper machine |
-
2018
- 2018-11-14 CN CN201821876153.2U patent/CN209319676U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111070160A (en) * | 2020-01-17 | 2020-04-28 | 舒昕日化科技有限公司 | Method for disassembling vacuum carrier roller type shaft core of high-speed living paper machine |
| CN111070160B (en) * | 2020-01-17 | 2021-04-23 | 舒昕日化科技有限公司 | Method for disassembling vacuum carrier roller type shaft core of high-speed living paper machine |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190830 |