CN108705486A - A kind of intelligence stretcher - Google Patents
A kind of intelligence stretcher Download PDFInfo
- Publication number
- CN108705486A CN108705486A CN201810773884.2A CN201810773884A CN108705486A CN 108705486 A CN108705486 A CN 108705486A CN 201810773884 A CN201810773884 A CN 201810773884A CN 108705486 A CN108705486 A CN 108705486A
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- China
- Prior art keywords
- setting
- spring
- fixed
- stretch rod
- oil cylinder
- 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.)
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Links
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 21
- 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 abstract description 17
- 230000007704 transition Effects 0.000 claims abstract description 5
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 238000011068 loading method Methods 0.000 claims description 36
- 238000007789 sealing Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
- 239000007787 solid Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B29/00—Accessories
- B25B29/02—Bolt tensioners
Abstract
The invention discloses a kind of intelligent stretcher, an oil cylinder is connected to above pedestal, oil cylinder is fixedly arranged above a middle part connecting seat；Driving gear and transition gear and a driven gear there are one being horizontally disposed in driving chamber body；A stretch rod is vertically fixed on driven gear, the bottom end of stretch rod is stretching head, and setting is there are one upper radial deflection reseting groove on the connecting seat of middle part, and in the top design of pedestal, there are one lower radial deflection reseting grooves, the bottom end of stretching head, bottom center inner radius are provided with internal thread；In the lower portion of stretching head, there are one pulling sleeves, the top of the peripheral connection gear box of pulling sleeve, gearcase to be connected by connecting shaft and speed reducer II for setting.Structure of the invention is novel in design, simple in structure, can realize that the stretching of screw rod and fixation and the dismounting of nut and locking, whole process action are automatically performed by two driving motors and an oil cylinder, operating efficiency is high, is a kind of ideal intelligent stretcher.
Description
Technical field
The present invention relates to stretcher technical field more particularly to a kind of intelligence stretchings being used cooperatively with industrial machinery people
Device.
Background technology
It is known, in mechanical component assembling and disassembly process, it will usually dismounting and the assembling procedure of screw rod and nut are encountered,
Such work is mostly to be completed using spanner or pneumatic tool by operator, but there is technical disadvantages for such equipment
End, is mainly reflected in：1. existing extracting tool efficiency is slow, the degree of automation bottom；2. being directed to some screw rods and nut spiral shell
The component of line connection, existing dismounting component cannot achieve dismounting, can only pass through manual teardown and locking；3, existing pneumatically to tear open
Tool construction complexity is unloaded, not easy to assemble, parts are more and are susceptible to failure.
How to be designed a dedicated for screw rod and spiral shell as industry technical staff for the drawback in the prior art
The intelligent stretcher of female fast assembling-disassembling is not easy to industrialize fast assembling-disassembling to be the industry to solve screw rod in the prior art and nut
Technical staff's technical problem urgently to be resolved hurrily.
Invention content
The purpose of the present invention is to provide a kind of intelligent stretchers, to solve foregoing problems existing in the prior art.
To achieve the goals above, the technical solution adopted by the present invention is as follows：A kind of intelligence stretcher a comprising bottom
Seat, transparent design at the center of pedestal are connected to an oil cylinder above pedestal, on the leading flank of oil cylinder there are one settings
Pouring orifice, the top of oil cylinder, peripheral bolt are fixed there are one middle part connecting seat, and the top of middle part connecting seat passes through bolt and upper
Lid connection is a driving part mounting seat between middle part connecting seat and upper cover；It is set at the top of driving part mounting seat
Set there are one drive cavity, driving cavity sealed by upper cover, in driving chamber body, from left to right respectively be horizontally disposed with there are one
Driving gear and transition gear and a driven gear, the driving gear are arranged at the top of speed reducer I, and and slow down
Machine I connects, and the lower section of the speed reducer I is servo motor I；On driven gear, it is vertically fixed with a stretch rod,
The top of middle part connecting seat, around stretch rod setting, there are one upper radial deflection reseting grooves, in upper radial deflection reseting groove,
A stress set is surrounded on stretch rod, being horizontally arranged in upper radial deflection reseting groove has multiple fixed blocks, Mei Gegu
Determining setting on block, there are one spring-loaded plungers, one end of spring-loaded plunger to withstand on fixed block, and the other end withstands on stress and puts on, multiple bullets
Stretch rod surround and stretch rod is fixed at center by spring plunger；The stretch rod passes through middle part connecting seat and oil cylinder,
In the connecting seat of middle part, the transparent design of the center, inner tip is provided with one group of piston reset spring, piston reset
The underface of spring is a piston, and solid in oil cylinder, the oiling inside the oil cylinder and on front side wall is inserted in the bottom end of piston
Mouth is connected and fixed；Transparent design at the inside center of piston is internally provided with a unbalance loading pad, is provided on unbalance loading pad
One unbalance loading locknut, the unbalance loading locknut pass through the bolt and stretching rod locking to one on side；In chassis interior, stretch
The bottom end of bar is connected to a stretching head；At the top of pedestal, there are one lower radial deflections to reset with the design of oil cylinder junction
Slot is surrounded with a stress set in lower radial deflection reseting groove on stretching head, horizontal in lower radial deflection reseting groove
Multiple fixed blocks are placed with, are arranged on each fixed block there are one spring-loaded plunger, one end of spring-loaded plunger is withstood on fixed block, separately
One end withstands on stress and puts on, and stretch rod surround and stretch rod is fixed at center by multiple spring-loaded plungers；The bottom end of stretching head,
Its bottom center inner radius is provided with internal thread；In the lower portion of stretching head, around stretching head setting, there are one pulling sleeve, pulling sleeves
Outer place be provided with a circle sliding tooth, the bottom end of pulling sleeve is provided with and the matched nut card slot of nut outer diameter；On the right side of pedestal
Fixed there are one gearcase on side, the top of gearcase is connected by connecting shaft and speed reducer II, the top of speed reducer II and
Servo motor II connects.
At the top of pulling sleeve, is fixed by a pulling sleeve retaining spring, stress set is withstood at the top of pulling sleeve retaining spring
Bottom end, the bottom end of pulling sleeve retaining spring is withstood on the top end face of pulling sleeve.
The oil cylinder is one-way cylinder, and inner tip is provided with resetting spring at the top of piston.
The driven gear designs for inverted T-type, is fixed in driving chamber body by upper cover extruding；Driving gear
There are one horizontal axis pins to fix waist type groove for upper setting, and axis pin fixes setting in waist type groove, and there are one axis pins, will be drawn by axis pin
Boom is fixed.
The unbalance loading pad is a fixed pad around the setting of stretch rod annular, and bottom surface is horizontally disposed, and top is
Spherical surface is arranged, and setting is matched with unbalance loading pad, and the unbalance loading locknut at the top of unbalance loading pad is also annular setting, unbalance loading locknut bottom end shape
Also it is spherical surface setting and and unbalance loading pad matching setting.
It is horizontally arranged in upper radial deflection reseting groove there are three fixed block, there are one spring stacks for setting on each fixed block
Plug, three fixed blocks and three spring-loaded plungers are uniformly arranged around stretch rod；It is horizontally arranged in lower radial deflection reseting groove
There are five fixed block, it is arranged on each fixed block there are one spring-loaded plunger, five fixed blocks and five spring-loaded plungers are surrounded and drawn
Extension head is uniformly arranged.
The beneficial effects of the invention are as follows：The present invention drives speed reducer I to drive by designing above, by servo motor I
Stretch rod realizes that rotation, the stretching head and screw flight on the top of stretch rod are fixed, meanwhile, by the oiling into oil cylinder, will live
Plug pushes up, stretching screw, then is coordinated by pulling sleeve and nut, drives speed reducer II by servo motor II, then pass through tooth
The sliding tooth placed outside wheel box driving pull sleeve, the dismounting of nut is realized by the rotation of pulling sleeve, and in disassembly process, is passed through
Upper radial deflection reseting groove and spring in lower radial deflection reseting groove and fixed block effectively prevent from causing because screw rod is crooked
Stretch rod beat problem, to sum up, structure of the invention is novel in design, simple in structure, can pass through two driving motors and one
The stretching and fixation and the dismounting of nut and locking of oil cylinder realization screw rod, whole process action are automatically performed, and operating efficiency is high, is one
The ideal intelligent stretcher of kind.
Description of the drawings
Fig. 1 is surface structure stereoscopic schematic diagram of the present invention；
Fig. 2 is appearance side structure schematic view of the present invention；
Fig. 3 is internal structure principle schematic I of the present invention；
Fig. 4 is internal structure principle schematic II of the present invention；
Reference numeral：1, servo motor I, 2, speed reducer I, 3, upper cover, 4, servo motor II, 5, speed reducer II, 6, connecting shaft, 7,
Gearcase, 8, pouring orifice, 9, driving part mounting seat, 10, driving cavity, 11, driving gear, 12, transition gear, 13, from
Moving gear, 14, axis pin fix waist type groove, 15, axis pin, 16, upper radial deflection reseting groove, 17, spring-loaded plunger, 18, fixed block,
19, stress set, 20, middle part connecting seat, 21, piston reset spring, 22, stretch rod, 23, piston, 24, unbalance loading pad, 25, unbalance loading lock
Mother, 26, oil cylinder, 27, pulling sleeve retaining spring, 28, stretching head, 29, internal thread, 30, pulling sleeve, 31, nut card slot, 32, pedestal,
33, lower radial deflection reseting groove.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with attached drawing, to the present invention into
Row is further described.It should be appreciated that the specific embodiments described herein are only used to explain the present invention, it is not used to
Limit the present invention.
A kind of intelligence stretcher comprising a pedestal 32, transparent design at the center of pedestal 32, pedestal 32 it is upper
Side is connected to an oil cylinder 26, is arranged on the leading flank of oil cylinder 26 there are one pouring orifice 8, the top of oil cylinder 26, peripheral bolt
Fixed there are one middle part connecting seat 20, the top of middle part connecting seat 20 is connected by bolt and upper cover 3, middle part connecting seat 20 and upper
It is a driving part mounting seat 9 between lid 3, the driving part mounting seat 9 is connected also by bolt and upper cover 3；
At the top of driving part mounting seat 9, there are one drive cavity 10, driving cavity 10 to seal, driving by upper cover 3 for setting
In cavity 10, it is horizontally disposed with respectively from left to right there are one driving gear 11 and transition gear 12 and a driven gear 13,
The driven gear 13 designs for inverted T-type, is fixed in driving cavity 10 by the extruding of upper cover 3；On driving gear
It is arranged there are one horizontal axis pin fixation waist type groove 14, axis pin fixes setting in waist type groove 14, and there are one axis pins 15, pass through axis pin
15 fix stretch rod 22；The driving gear 11 is arranged at the top of speed reducer I 2, and is connected with speed reducer I 2, described
The lower section of speed reducer I 2 is servo motor I 1；On driven gear 13, it is vertically fixed with a stretch rod 22, is connected at middle part
The top of seat 20, around the setting of stretch rod 22, there are one upper radial deflection reseting grooves 16, in upper radial deflection reseting groove 16,
A stress set 19 is surrounded on stretch rod 22, being horizontally arranged in upper radial deflection reseting groove 16 there are multiple fixed blocks
18, there are one spring-loaded plungers 17, one end of spring-loaded plunger 17 to withstand on fixed block 18 for setting on each fixed block 18, other end top
On stress set 19, stretch rod 22 surround and stretch rod 22 is fixed at center by multiple spring-loaded plungers 17；
The stretch rod 22 passes through middle part connecting seat 20 and oil cylinder 26, and in middle part connecting seat 20, the center is logical up and down
Design thoroughly, inner tip are provided with one group of piston reset spring 21, and the underface of piston reset spring 21 is a piston 23,
The pouring orifice 8 that the bottom end of piston 23 is inserted on solid in oil cylinder 26, described 26 inside of oil cylinder and front side wall is connected and fixed；Piston 23
Inside center at transparent design, be internally provided with a unbalance loading pad 24, there are one unbalance loadings to lock for setting on unbalance loading pad 24
Mother 25, the unbalance loading locknut 25 pass through bolt on side and the locking of stretch rod 22 to one；
Inside pedestal 32, the bottom end of stretch rod 22 is connected to a stretching head 28；At the top of pedestal 32, with 26 knot of oil cylinder
Design is surrounded with one there are one lower radial deflection reseting groove 33 in lower radial deflection reseting groove 33 at conjunction on stretching head
A stress set 19, being horizontally arranged in lower radial deflection reseting groove 33 has multiple fixed blocks 18, is provided on each fixed block 18
One end of one spring-loaded plunger 17, spring-loaded plunger 17 is withstood on fixed block 18, and the other end is withstood on stress set 19, multiple spring stacks
Stretch rod 22 surround and stretch rod 22 is fixed at center by plug 17；The bottom end of the stretching head 28, in bottom center
Internal thread 29 is provided at diameter, internal thread locks connection with with outer screw herein；In the lower portion of stretching head 28, surround
For the setting of stretching head 28 there are one pulling sleeve 30, outer place of pulling sleeve 30 is provided with a circle sliding tooth, the bottom end of pulling sleeve 30 be provided with and
The matched nut card slot 31 of nut outer diameter, the nut card slot is used for and external nut fixes；On the right side of pedestal 32
Fixed there are one gearcase 7, the top of gearcase 7 is connected by connecting shaft 6 and speed reducer II 5, the top of speed reducer II 5 and is watched
Take the connection of motor II 4.
Embodiment 1：The present invention drives speed reducer I 2 to drive stretch rod 22 real by designing above, by servo motor I 1
It now rotates, the rotation of the stretching head 28 on the top of stretch rod 22 is simultaneously screwed with outer screw, at the same time, by oil cylinder 26
Interior oiling pushes up piston 23, tenses outer screw, then coordinate by pulling sleeve 30 and external nut, passes through servo motor
External nut is realized in II 4 driving speed reducers II 5, then the sliding tooth by being placed outside 7 driving pull sleeve 30 of gearcase, the rotation of pulling sleeve 30
Dismounting or assembling.
Further, the oil cylinder 26 is one-way cylinder, and inner tip is provided with reset bullet at the top of piston
Spring 21, after being pushed up piston by oil cylinder 26, after 26 pressure release of oil cylinder, piston 23 is automatically multiple under the action of resetting spring 21
Position.
In the dismounting of external nut or assembling process, at the top of pulling sleeve 30, pass through a pulling sleeve retaining spring
27 fix, and the top of pulling sleeve retaining spring 27 withstands on the bottom end of stress set 30, and the bottom end of pulling sleeve retaining spring 27 withstands on pulling sleeve 30
Top end face on, the effect of pulling sleeve retaining spring 27 is that control pulling sleeve 30 facilitates outer screw in the lower section of stretching head 28 always
And the fixation of external nut.
Embodiment 2：It is inclined by upper radial direction during dismounting or erection bolt on the basis of implementing structure above
Moving reseting groove 16 and spring-loaded plunger 17 in lower radial deflection reseting groove 33 and fixed block 18 effectively prevents due to screw rod is crooked
22 beat problem of caused stretch rod is horizontally arranged in upper radial deflection reseting groove 16 there are three fixed block 18, each fixed
There are one spring-loaded plungers 17 for setting on block 18, and three fixed blocks 18 and three spring-loaded plungers 17 are laid around stretch rod 22
It sets；It is horizontally arranged in lower radial deflection reseting groove 33 there are five fixed block 18, there are one springs for setting on each fixed block 18
Plunger 17, five fixed blocks 18 and five spring-loaded plungers 17 are uniformly arranged around stretching head, pass through upper radial deflection reseting groove
The pact of spring-loaded plunger 17 and fixed block 18 in 16 and the spring-loaded plunger 17 and fixed block 18 in lower radial deflection reseting groove 33
Stretch rod 22 is fixed at center by beam jointly；
The unbalance loading pad 24 is a fixed pad around 22 annular setting of stretch rod, and bottom surface is horizontally disposed, and top is
Spherical surface is arranged, and setting is matched with unbalance loading pad 24, the unbalance loading locknut 25 at 24 top of unbalance loading pad is also annular setting, unbalance loading locknut 25
Bottom end shape also be spherical surface setting and and unbalance loading pad 24 matching setting, when outer screw is crooked, pass through unbalance loading pad 24 constraint
The vertical operation always of unbalance loading locknut 25, because unbalance loading locknut 25 and stretch rod are integral type, so, the about bundle drawing always of unbalance loading pad 24
Bar moves vertically, and prevents the abrasion of stretch rod 22 and piston 23 caused by outer screw is crooked.
To sum up, structure of the invention is novel in design, simple in structure, can realize spiral shell by two driving motors and an oil cylinder
The stretching and fixation of bar and the dismounting and locking of nut, whole process action are automatically performed, and operating efficiency is high, is a kind of ideal intelligence
It can stretcher.
Claims (6)
1. a kind of intelligence stretcher comprising a pedestal, it is characterised in that：Transparent design, pedestal at the center of pedestal
Top be connected to an oil cylinder, setting is there are one pouring orifice on the leading flank of oil cylinder, the top of oil cylinder, and peripheral bolt is fixed
There are one middle part connecting seat, the top of middle part connecting seat is connected by bolt with upper cover, is one between middle part connecting seat and upper cover
A driving part mounting seat；At the top of driving part mounting seat, there are one drive cavity, driving cavity to pass through upper for setting
Lid sealing, in driving chamber body, horizontally disposed respectively from left to right there are one driving gear and transition gear and one are driven
Gear, the driving gear are arranged at the top of speed reducer I, and are connected with speed reducer I, and the lower section of the speed reducer I is
Servo motor I；On driven gear, it is vertically fixed with a stretch rod, the top of connecting seat at middle part surrounds stretch rod
Setting is surrounded with a stress set there are one upper radial deflection reseting groove in upper radial deflection reseting groove on stretch rod,
Being horizontally arranged in upper radial deflection reseting groove has multiple fixed blocks, and there are one spring-loaded plunger, springs for setting on each fixed block
One end of plunger is withstood on fixed block, and the other end withstands on stress and puts on, and stretch rod surround and by stretch rod by multiple spring-loaded plungers
It is fixed at center；The stretch rod passes through middle part connecting seat and oil cylinder, and in the connecting seat of middle part, the center is logical up and down
Design thoroughly, inner tip are provided with one group of piston reset spring, and the underface of piston reset spring is a piston, piston
Bottom end is inserted admittedly in oil cylinder, and the pouring orifice inside the oil cylinder and on front side wall is connected and fixed；On at the inside center of piston
Lower transparent design is internally provided with a unbalance loading pad, and there are one unbalance loading locknut, the unbalance loading locknut is logical for setting on unbalance loading pad
Cross the bolt and stretching rod locking to one on side；It is connected to a stretching head in the bottom end of chassis interior, stretch rod；The bottom of at
The top of seat, there are one lower radial deflection reseting grooves with the design of oil cylinder junction, in lower radial deflection reseting groove, stretching head
On be surrounded with a stress set, being horizontally arranged in lower radial deflection reseting groove has multiple fixed blocks, on each fixed block
There are one spring-loaded plunger, one end of spring-loaded plunger to withstand on fixed block for setting, and the other end withstands on stress and puts on, multiple spring-loaded plungers
Stretch rod is surround and stretch rod is fixed at center；The bottom end of stretching head, bottom center inner radius are provided with internal thread；
In the lower portion of stretching head, around stretching head setting there are one pulling sleeve, outer place of pulling sleeve is provided with a circle sliding tooth, pulling sleeve
Bottom end be provided with and the matched nut card slot of nut outer diameter；It is fixed on the right side of pedestal that there are one gearcase, gearcases
Top connected by connecting shaft and speed reducer II, the top of speed reducer II and servo motor II connect.
2. a kind of intelligent stretcher according to claim 1, it is characterised in that：At the top of pulling sleeve, dialled by one
Set retaining spring is fixed, and the bottom end of stress set is withstood at the top of pulling sleeve retaining spring, the bottom end of pulling sleeve retaining spring withstands on pulling sleeve
Top end face on.
3. a kind of intelligent stretcher according to claim 1, it is characterised in that：The oil cylinder is one-way cylinder,
Inner tip is provided with resetting spring at the top of piston.
4. a kind of intelligent stretcher according to claim 1, it is characterised in that：The driven gear is inverted T-type
Design is fixed on by upper cover extruding in driving chamber body；There are one horizontal axis pins to fix waist type groove for setting on driving gear,
Axis pin fixes setting in waist type groove, and there are one axis pins, are fixed stretch rod by axis pin.
5. a kind of intelligent stretcher according to claim 1, it is characterised in that：The unbalance loading pad is one around stretching
The fixed pad of burr shape setting, bottom surface is horizontally disposed, and top is that spherical surface is arranged, and setting, unbalance loading pad are matched with unbalance loading pad
The unbalance loading locknut at top is also annular setting, and unbalance loading locknut bottom end shape is also spherical surface setting and and unbalance loading pad matching setting.
6. a kind of intelligent stretcher according to claim 1, it is characterised in that：Level is put in upper radial deflection reseting groove
It sets there are three fixed block, there are one spring-loaded plungers for setting on each fixed block, and three fixed blocks and three spring-loaded plungers surround
Stretch rod is uniformly arranged；It is horizontally arranged in lower radial deflection reseting groove there are five fixed block, one is provided on each fixed block
A spring-loaded plunger, five fixed blocks and five spring-loaded plungers are uniformly arranged around stretching head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810773884.2A CN108705486B (en) | 2018-07-15 | 2018-07-15 | Intelligent stretcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810773884.2A CN108705486B (en) | 2018-07-15 | 2018-07-15 | Intelligent stretcher |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108705486A true CN108705486A (en) | 2018-10-26 |
| CN108705486B CN108705486B (en) | 2023-12-29 |
Family
ID=63874067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810773884.2A Active CN108705486B (en) | 2018-07-15 | 2018-07-15 | Intelligent stretcher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108705486B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109623352A (en) * | 2018-12-20 | 2019-04-16 | 华中科技大学 | A kind of tools for bolts ' pretension device having high bonding strength characteristic |
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| EP2821182A2 (en) * | 2013-07-05 | 2015-01-07 | ITH GmbH & Co. Kg | Clamping device for stretching a threaded bolt |
| CN105750897A (en) * | 2016-05-05 | 2016-07-13 | 哈尔滨工程大学 | Automatic nut tightening and returning mechanism with bolt stretching machine |
| CN106736480A (en) * | 2016-12-31 | 2017-05-31 | 马鞍山市三江机械有限公司 | A kind of hydraulic elongator and its drawing process |
| CN206677855U (en) * | 2017-04-12 | 2017-11-28 | 内蒙古久和能源装备有限公司 | Can automatic locking nut hydraulic elongator |
| CN208496894U (en) * | 2018-07-15 | 2019-02-15 | 德州德劲液压动力有限公司 | A kind of intelligence stretcher |
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2018
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|---|---|---|---|---|
| GB9414297D0 (en) * | 1994-07-15 | 1994-09-07 | Hydra Tight Ltd | Hydraulic bolt tensioning arrangement |
| DE19746034A1 (en) * | 1996-10-21 | 1998-04-23 | Ntn Toyo Bearing Co Ltd | Self-tensioning belt drive for motor vehicle internal combustion engine |
| US20080006122A1 (en) * | 2004-09-03 | 2008-01-10 | Jorg Hohmann | Hydraulic Screw Tightening or Tensioning Device |
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| CN202240422U (en) * | 2011-09-30 | 2012-05-30 | 北京科路工业装备有限公司 | Hydraulic stretcher with spring return function |
| CN103170833A (en) * | 2013-03-05 | 2013-06-26 | 马鞍山市三江机械有限公司 | Novel double-level tensioner |
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| CN106736480A (en) * | 2016-12-31 | 2017-05-31 | 马鞍山市三江机械有限公司 | A kind of hydraulic elongator and its drawing process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109623352A (en) * | 2018-12-20 | 2019-04-16 | 华中科技大学 | A kind of tools for bolts ' pretension device having high bonding strength characteristic |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108705486B (en) | 2023-12-29 |
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