CN109048314A - A kind of self-adaptive hydraulic stretcher - Google Patents
A kind of self-adaptive hydraulic stretcher Download PDFInfo
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- CN109048314A CN109048314A CN201811194928.2A CN201811194928A CN109048314A CN 109048314 A CN109048314 A CN 109048314A CN 201811194928 A CN201811194928 A CN 201811194928A CN 109048314 A CN109048314 A CN 109048314A
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- stretch rod
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- hydraulic cylinder
- oversheath
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- 230000005540 biological transmission Effects 0.000 claims description 15
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 12
- 239000000446 fuel Substances 0.000 claims description 9
- 239000000945 filler Substances 0.000 claims description 8
- 230000007423 decrease Effects 0.000 claims 1
- 230000036316 preload Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 241000233855 Orchidaceae Species 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010727 cylinder oil Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
Abstract
The invention discloses a kind of self-adaptive hydraulic stretchers in tools for bolts ' pretension device field, including hydraulic cylinder, cavity is offered in the middle part of hydraulic cylinder, hydraulic cylinder works end drives stretch rod axial movement, stretch rod lower end is equipped with elastic supporting mechanism, stretch rod is also sequentially connected with rotary drive mechanism, hydraulic cylinder is correspondingly provided with support sleeve radially above, nut dialing ring is equipped in support sleeve, the threaded hole that stretch rod top axial offers and matches to pretension bolt, hydraulic cylinder is arranged in tubular oversheath, elastic supporting mechanism is arranged between stretch rod lower end and oversheath bottom, pendular body is connected on stretch rod, it is equipped on the outside of pendular body and swings spherical surface, there are gaps between the cavity inner wall and stretch rod of hydraulic cylinder, drive bearing is equipped between stretch rod and pendular body.The present invention can guarantee that bolt can smoothly enter into the threaded hole of stretch rod, smoothly complete the preload of bolt on flange face.
Description
Technical field
The invention belongs to tools for bolts ' pretension device field, in particular to a kind of hydraulic elongator.
Background technique
In the prior art, bolts and nuts are that machinery field assembles indispensable components, the fixation of bolts and nuts
Mode is more stronger than other fixed forms, more reliable, thus becomes most common and two or more components are fixed on one
The mode risen.Due to certain large scale equipments use bolt it is thicker, pretightning force is very big, if the fastening and disassembly of bolt by
It is artificial come if completing, labor intensity is very high.
Currently, hydraulic elongator is mostly used to stretch bolt, hydraulic elongator includes hydraulic cylinder and stretching interconnecting piece
Part stretches connecting component and passes through its internal screw thread and be bolted, by it perpendicular to the protrusion and the work of hydraulic cylinder of bolt straight line
The end face of plug matches.Its working principle is that making to stretch connecting component and be bolted, high pressure oil is injected into hydraulic cylinder, it is living
Plug pushes the protrusion for stretching connecting component, applies drawing force to bolt, is elongated bolt, later, the fastening that bolt is carried out
Or disassembling section can be easier to realize, and can realize that the pretightning force of fastening is bigger.
Bolt is pre-tightened with saving trouble in order to more convenient, in the prior art, there is a kind of hydraulic nut stretcher,
Number of patent application: 201720731051 .0；The applying date: 2017 .06 .22；Notification number: 206899149 U of CN；The day for announcing:
2018.01.19；Its structure includes tubular shell；Bolt collar with threaded interior hole, is at least partially disposed in tubular shell,
For being nested with the bolt external screw thread in nut exterior portion, wherein threaded interior hole has mutually matched interior with bolt external screw thread
Screw thread；Positioned at the intracorporal hydraulic device of cylindrical case, for driving bolt collar to move up along bolt length direction；And it can turn
It is mounted on the support ring of tubular shell lower end dynamicly, wherein support ring circumferentially offers arc notch, and in support ring also
Magnet arrangement is installed, magnet arrangement includes the magnet being arranged on support ring internal perisporium and is fixed together with magnet and diameter
To the rotatable arms for stretching out support ring periphery wall.
The device can make nut enter in shell more quickly, but when practical operation, bolt axis and flange spiral shell
There can be the offset distance within 1.5mm between the axis of pit, two axial lines are not fully overlapped, bolt axis and Flange Plane
Verticality also have error, have the non-perpendicularity error within 1 °；During causing bolt to protrude into bolt collar threaded hole, spiral shell
Stud shaft line and bolt collar screw thread axially bored line can also have offset, not be overlapped, since hydraulic elongator is rigid, piston rod
It can not swing, bolt is eventually stuck in bolt collar threaded hole, and piston rod can not rotate, and final bolt is caused to be unable to complete
It pre-tightens.
Summary of the invention
The object of the present invention is to provide a kind of self-adaptive hydraulic stretcher, the position that stretch rod is adapted to bolt is put
It is dynamic, it can guarantee that bolt can smoothly enter into the threaded hole of stretch rod, smoothly complete the preload of bolt on flange face.
The object of the present invention is achieved like this: a kind of self-adaptive hydraulic stretcher, including hydraulic cylinder, axis in the middle part of hydraulic cylinder
To the cavity that can hold stretch rod and pass through is offered, the working end driving stretch rod axial movement of hydraulic cylinder, stretch rod lower end is corresponded to
Equipped with elastic supporting mechanism, the stretch rod is also sequentially connected with rotary drive mechanism, and the hydraulic cylinder corresponds to radially above
Equipped with support sleeve, rotatable nut dialing ring is equipped in support sleeve, the stretch rod upper end corresponds to nut dialing ring and protrudes into support sleeve,
The threaded hole that stretch rod top axial offers and matches to pretension bolt, the hydraulic cylinder are arranged in tubular oversheath,
The elastic supporting mechanism is arranged between stretch rod lower end and oversheath bottom, and pendular body, pendular body are connected on stretch rod
Outside, which is equipped with, swings spherical surface, and there are the space that can hold pendular body swing, the cavity inner wall of the hydraulic cylinder and drawings in oversheath
There are gaps between boom, and drive bearing is equipped between the stretch rod and pendular body.
When the invention works, support sleeve is pressed on flange face, is protruded into support sleeve to pretension bolt, rotary driving machine
Structure drives stretch rod rotation, and bolt screws in the threaded hole of stretch rod, and oversheath inner wall is corresponding with pendular body, and pendular body can be with
It is swung in oversheath, also there are the gaps swung for stretch rod for the cavity of hydraulic cylinder, for bolt axis relative method orchid face
Inclination angle, stretch rod is adapted to the oblique angular position of bolt by swinging, and final bolt centering enters the spiral shell of stretch rod
In pit, bolt external screw thread is sufficiently engaged with threaded hole internal screw thread, it is ensured that and bolt axis is overlapped with the axis of stretch rod threaded hole,
Prevent bolt stuck；Hydraulic cylinder oil inlet, piston mobile terminal drive stretch rod to move down, and stretch rod draws bolt axially downwards
It stretches, then nut pulls out circle and drives nut rotation, until nut and assembly flange face paste are closed；After cylinder pressure unloading, bolt is returned
Contracting, so that bolt be made to produce pretightning force.Compared with prior art, the beneficial effects of the present invention are: can be according to bolt phase
To the tilt angle positions of flange face, the deviation angle of adjust automatically stretch rod, so that bolt centering enters the threaded hole of stretch rod,
Guarantee that bolt is overlapped with the axis of the threaded hole of stretch rod, avoids bolt stuck in the threaded hole of stretch rod, complete bolt
It pre-tightens.Pendular body of the invention can be swung in oversheath, and stretch rod can be rotated relative to pendular body, not interfere with each other, and structure
It is compact.
As a further improvement of the present invention, the elastic supporting mechanism is reset spring one, and stretch rod lower end is connected with
Ring spring locating piece, spring detent is interior to be equipped with the cylindrical cavity for accommodating reset spring one, one end bullet of reset spring one
Property contradict on the cavity end face, the other end elasticity of reset spring one is contradicted in oversheath bottom.The piston of hydraulic cylinder moves
Moved end drives stretch rod to move down, and bolt is stretched, and reset spring one is compressed, and after hydraulic cylinder unloading, reset spring one will
Stretch rod pushes back home position；Reset spring one is arranged in cavity, more compact structure.
As a further improvement of the present invention, the pendular body in a ring, swings spherical surface and is located at pendular body periphery, pendular body
It is set in spring detent periphery, the drive bearing is arranged between pendular body and spring detent, spring detent periphery
Equipped with the annular positioning groove that can hold drive bearing and be caught in.The swing spherical surface of pendular body periphery is in contact with oversheath inner wall, can be with
It realizes and swings.
For the ease of installation, the pendular body includes inner ring and outer rings, and inner ring lower end is equipped with outward flange, and inner ring upper end is fixed
It is connected with circular orientation end plate, the outer ring inner wall circumferentially offers slot, the corresponding insertion of the outward flange and locating end plate of inner ring
In the slot, outward flange and slot lower end face contact, locating end plate and slot upper end face contact；The inner ring inner wall is through card slot
It is caught in retaining ring, the spring detent periphery has been caught in lower retaining ring through card slot, and drive bearing is located at upper retaining ring and lower retaining ring
Between；The upper and lower ends of the outer ring are respectively equipped with annular upper support and lower support.When stretch rod rotates, drive bearing work
Make, the oblique angular position that pendular body is adapted to bolt is swung, so that the threaded hole of stretch rod and bolt centering, are sufficiently nibbled
It closes.
As a further improvement of the present invention, the oversheath upper end is equipped with annular cover plate, and oversheath lower end is equipped with bottom plate,
Oversheath inner upper is equipped with neck bush, and neck bush inner wall is equipped with step in annular first, and hydraulic cylinder bottom is supported on interior
On rank, neck bush bottom is equipped with step in annular second, and the aperture of step is successively decreased from top to bottom in annular second, the stretch rod
Lower end be equipped with transmission umbrella, the transmission pack includes several circumferentially spaced stop blocks, correspondence second on the outside of stop block
Interior step is equipped with limit inclined-plane, and the piston of the hydraulic cylinder lower end can be with transmission umbrella upper end face contact；Upper support and neck bush
The corresponding setting in lower end surface, lower support setting corresponding with bottom plate.Hydraulic cylinder is fixed in first above step, hydraulic cylinder
Piston and transmission umbrella upper end face contact, drive transmission umbrella to move down, and stretch rod is realized bolt tension, after hydraulic cylinder unloading,
Stretch rod is pushed back home position by reset spring one, and the limit inclined-plane for being driven umbrella is contacted with the inner hole of step in second, to stretching
Bar limit, avoids pendular body from bumping against neck bush.
As a further improvement of the present invention, the hydraulic cylinder includes annular outer cylinder body and inner cylinder body, outer cylinder body and inner casing
Oil pocket is formed between body, annular piston is equipped in oil pocket, and outer cylinder body lower end is equipped with ring-shaped cylinder cover, and piston is fixedly connected with ring
Shape piston cap, cavity are located at the middle part of inner cylinder body, are connected with the fuel filler neck being connected to oil pocket on the outer cylinder body, neck bush and outer
Sheath side, which offers, can hold the through-hole that fuel filler neck passes through.By fuel filler neck to the oil pocket fuel feeding of hydraulic cylinder, hydraulic oil, which pushes, lives
Plug moves down, and driving piston is mobile.
As a further improvement of the present invention, the rotary drive mechanism includes motor one, and baseplate underside is connected with deceleration
Device one, motor one are connected with one input terminal of retarder, and one output end of retarder is connected with universal joint one, axial direction on the stretch rod
Cavity is offered, bottom plate, which is equipped with, can hold the through-hole that universal joint passes through, and the other end of universal joint one sequentially passes through bottom plate, resets bullet
Cavity is protruded into after spring one and is sequentially connected with stretch rod.Motor drives universal joint one to rotate after the deceleration of retarder one, universal
Section one drives stretch rod rotation, realizes and drives bolt rotation.
As a further improvement of the present invention, it is equipped with pedestal below the oversheath, is symmetrically set with two on pedestal
The piston rod end of telescopic cylinder, telescopic cylinder is equipped with push plate, and the backplanes support of oversheath is in two push plates.Support sleeve is pressed in method
When on blue face, there may be gap, support sleeve is pressed on flange face by push plate by telescopic cylinder for support sleeve end face and flange face
On, guarantee that support is cased with stress surface.
As a further improvement of the present invention, motor two, motor two and two input terminal of retarder are connected on the pedestal
It is connected, two output end of retarder is connected with universal joint two, and nut dialing ring periphery is equipped with driving cog, and the other end of universal joint two is through tooth
Wheel set and nut dialing ring are sequentially connected；The support sleeve is fixedly connected with hydraulic cylinder, is located at below nut dialing ring in support sleeve and is set
There is reset spring two, is equipped with check ring below reset spring two.Motor two drives two turns of universal joint after the deceleration of retarder two
Dynamic, universal joint two is rotated with moving gear, and gear drives the rotation of nut dialing ring, and nut dialing ring covers in nut periphery, realizes and drive spiral shell
Mother's rotation, after reset spring two is compressed, is resetted nut dialing ring using thrust.
As a further improvement of the present invention, the pedestal is equipped with proximity sensor one, and support sleeve is equipped with close to biography
Sensor two.Proximity sensor two detects whether support sleeve is in contact with flange face, and proximity sensor one, which detects stretcher, is integrally
It is no to retract in place.
Detailed description of the invention
Fig. 1 is perspective view of the invention.
Fig. 2 is another perspective view of the invention.
Fig. 3 is schematic diagram of internal structure of the invention.
Fig. 4 is the partial enlarged view of Fig. 3.
Fig. 5 is the structural schematic diagram of pendular body.
Fig. 6 is the structural schematic diagram of hydraulic cylinder.
Fig. 7 is the structural schematic diagram of stretch rod.
Wherein, 1 hydraulic cylinder, 1a outer cylinder body, 1b inner cylinder body, 1c piston, 1d cylinder cap, 1e piston cap, 1f oil pocket, 1g refuel
Mouth, 2 stretch rods, 2a threaded hole, 2b are driven umbrella, 3 support sleeves, 4 nut dialing rings, 4a driving cog, 5 oversheaths, 6 pendular bodies, 6a pendulum
Dynamic spherical surface, 601 inner ring, 601a outward flange, 602 outer rings, 602a upper support, 602b lower support, 603 locating end plates, 7 transmissions
Bearing, 8 reset springs one, 9 spring detents, 10 slots, retaining ring on 11,12 lower retaining rings, 13 cover boards, 14 bottom plates, 15 neck bush,
Step in 15a first, step in 15b second, 16 transmission umbrellas, 16a limit inclined-plane, 17 motors one, 18 retarders one, 19 universal joints
One, 20 pedestals, 21 telescopic cylinders, 22 push plates, 23 motors two, 24 retarders two, 25 universal joints two, 26 gear pairs, 27 reset bullet
Spring two, 28 check rings, 29 proximity sensors one, 30 proximity sensors two.
Specific embodiment
It as shown in figs. 1-7, is a kind of self-adaptive hydraulic stretcher, including hydraulic cylinder 1,1 middle part of hydraulic cylinder is axial to be offered
The cavity that stretch rod 2 passes through can be held, the working end driving stretch rod 2 of hydraulic cylinder 1 moves axially, and 2 lower end of stretch rod is correspondingly provided with
Elastic supporting mechanism, stretch rod 2 are also sequentially connected with rotary drive mechanism, and hydraulic cylinder 1 is correspondingly provided with support sleeve radially above
3, support sleeve 3 is interior to be equipped with rotatable nut dialing ring 4, and 2 upper end of stretch rod corresponds to nut dialing ring 4 and protrudes into support sleeve 3, stretch rod 2
The threaded hole 2a that top axial offers and matches to pretension bolt, hydraulic cylinder 1 are arranged in tubular oversheath 5, the bullet
Property supporting mechanism be arranged between 5 bottom of 2 lower end of stretch rod and oversheath, pendular body 6 is connected on stretch rod 2, outside pendular body 6
Side, which is equipped with, swings spherical surface 6a, and there are the space that can hold the swing of pendular body 6, the cavity inner wall of hydraulic cylinder 1 and stretchings in oversheath 5
There are gaps between bar 2, and drive bearing 7 is equipped between stretch rod 2 and pendular body 6.The elastic supporting mechanism is reset spring
One 8,2 lower end of stretch rod is connected with ring spring locating piece 9, is equipped in spring detent 9 and accommodates the cylindric of reset spring 1
One end elasticity of cavity, reset spring 1 contradicts on the cavity end face, and the other end elasticity of reset spring 1 contradicts
5 bottom of oversheath.Pendular body 6 in a ring, swings spherical surface 6a and is located at 6 periphery of pendular body, pendular body 6 is set in spring detent 9
Periphery, drive bearing 7 are arranged between pendular body 6 and spring detent 9, and 9 periphery of spring detent, which is equipped with, can hold drive bearing 7
The annular positioning groove being caught in.Pendular body 6 includes inner ring 601 and outer ring 602, and 601 lower end of inner ring is equipped with outward flange 601a, inner ring
601 upper ends are fixedly connected with circular orientation end plate 603, and 602 inner wall of outer ring circumferentially offers slot 10, the outward flange of inner ring 601
In the corresponding insertion slot 10 of 601a and locating end plate 603, outward flange 601a and 10 lower end face contact of slot, locating end plate 603 with
10 upper end face contact of slot；601 inner wall of inner ring has been caught in upper retaining ring 11 through card slot, and 9 periphery of spring detent has been caught in through card slot
Lower retaining ring 12, drive bearing 7 is between upper retaining ring 11 and lower retaining ring 12；The upper and lower ends of outer ring 602 are respectively equipped in annular
Supporter 602a and lower support 602b.
5 upper end of oversheath is equipped with annular cover plate 13, and 5 lower end of oversheath is equipped with bottom plate 14, and 5 inner upper of oversheath is equipped with interior
Bushing 15,15 inner wall of neck bush are equipped with step 15a in annular first, and 1 bottom of hydraulic cylinder is supported on interior step, neck bush 15
Bottom is equipped with step 15b in annular second, and the aperture of step 15b is successively decreased from top to bottom in annular second, and the lower end of stretch rod 2 is set
Having transmission umbrella 162b, transmission umbrella 162b includes several circumferentially spaced stop blocks, corresponds to platform in second on the outside of stop block
Rank 15b is equipped with limit inclined-plane 16a, and the piston 1c of 1 lower end of hydraulic cylinder can be with the transmission upper end umbrella 162b face contact；Upper support 602a
Setting corresponding with 15 lower end surface of neck bush, lower support 602b setting corresponding with bottom plate 14.Hydraulic cylinder 1 includes annular outer shell
Body 1a and inner cylinder body 1b forms oil pocket 1f, is equipped with annular piston 1c, outer cylinder body in oil pocket 1f between outer cylinder body 1a and inner cylinder body 1b
The lower end 1a is equipped with ring-shaped cylinder cover 1d, and the lower end piston 1c is fixedly connected with annular piston lid 1e, and cavity is located at the middle part of inner cylinder body 1b,
The fuel filler neck 1g being connected to oil pocket 1f is connected on outer cylinder body 1a, neck bush 15 and 5 side of oversheath, which offer, can hold fuel filler neck
The through-hole that 1g is passed through.
The rotary drive mechanism includes motor 1, is connected with retarder 1 on the downside of bottom plate 14, motor 1 with subtract
Fast one 18 input terminal of device is connected, and one 18 output end of retarder is connected with universal joint 1, axially offers cavity on stretch rod 2,
Bottom plate 14, which is equipped with, can hold the through-hole that universal joint passes through, and the other end of universal joint 1 sequentially passes through bottom plate 14, reset spring 1
After protrude into cavity and with stretch rod 2 be sequentially connected.It is equipped with pedestal 20 below oversheath 5, is symmetrically set with two on pedestal 20
The piston rod end of telescopic cylinder 21, telescopic cylinder 21 is equipped with push plate 22, and the bottom plate 14 of oversheath 5 is supported in two push plates 22.
Motor 2 23 is connected on pedestal 20, motor 2 23 is connected with 2 24 input terminal of retarder, and 2 24 output end of retarder is connected with
Universal joint 2 25,4 periphery of nut dialing ring are equipped with driving cog 4a, and the other end of universal joint 2 25 is through gear pair 26 and nut dialing ring 4
Transmission connection；Support sleeve 3 is fixedly connected with hydraulic cylinder 1, is located at below nut dialing ring 4 in support sleeve 3 and is equipped with reset spring 2 27,
2 27 lower section of reset spring is equipped with check ring 28.Pedestal 20 is equipped with proximity sensor 1, and support sleeve 3 is equipped with close to biography
Sensor 2 30.
When the invention works, on a robotic arm, support sleeve 3 is pressed on flange face the installation of pedestal 20 by mechanical hand-motion,
It is protruded into support sleeve 3 to pretension bolt, motor 1 drives universal joint 1 to rotate, universal joint after the deceleration of retarder 1
One 19 drive stretch rod 2 to rotate, and realize and drive bolt rotation, and bolt screws in the threaded hole 2a of stretch rod 2,5 inner wall of oversheath
Corresponding with pendular body 6, pendular body 6 can be swung in oversheath 5, and also there are swing for stretch rod 2 for the cavity of hydraulic cylinder 1
Gap, for the inclination angle in bolt axis relative method orchid face, stretch rod 2 is adapted to the tilt angle position of bolt by swinging
It sets, final bolt centering enters in the threaded hole 2a of stretch rod 2, and bolt external screw thread is sufficiently engaged with threaded hole 2a internal screw thread, really
It protects bolt axis to be overlapped with the axis of 2 threaded hole 2a of stretch rod, prevents bolt stuck；By fuel filler neck 1g to the oil of hydraulic cylinder 1
Chamber 1f refuel, piston 1c move down with transmission the upper end umbrella 162b face contact, drive stretch rod 2 moves down, stretch rod 2 by bolt to
Lower axial tension, then motor 2 23 drives universal joint 2 25 to rotate after the deceleration of retarder 2 24,2 25 band movable tooth of universal joint
Wheel set 26 is driven, and gear drives nut dialing ring 4 to rotate, and is realized and is driven nut rotation, until nut and assembly flange face paste are closed；Liquid
After 1 discharge degree of cylinder pressure, reset spring 1 shifts stretch rod 2 onto home position, and step 15b connects in limit inclined-plane 16a and second
Touching limit, bolt retraction, so that bolt be made to produce pretightning force.
The advantages of present apparatus, is: can according to bolt with respect to flange face tilt angle positions, adjust automatically stretch rod 2
Deviation angle guarantees the axis of the threaded hole 2a of bolt and stretch rod 2 so that bolt centering enters the threaded hole 2a of stretch rod 2
It is overlapped, avoids bolt stuck in the threaded hole 2a of stretch rod 2, complete the preload of bolt.Pendular body 6 of the invention can protect outside
It is swung in set 5, stretch rod 2 can be rotated relative to pendular body 6, not interfere with each other, and compact-sized.
The present invention is not limited to the above embodiments, on the basis of technical solution disclosed by the invention, the skill of this field
For art personnel according to disclosed technology contents, one can be made to some of which technical characteristic by not needing creative labor
A little replacements and deformation, these replacements and deformation are within the scope of the invention.
Claims (10)
1. a kind of self-adaptive hydraulic stretcher, including hydraulic cylinder, axial offer in hydraulic cylinder middle part can hold the sky that stretch rod passes through
Chamber, the working end driving stretch rod axial movement of hydraulic cylinder, stretch rod lower end is correspondingly provided with elastic supporting mechanism, the stretch rod
It is also sequentially connected with rotary drive mechanism, the hydraulic cylinder is correspondingly provided with support sleeve radially above, and being equipped in support sleeve can turn
Dynamic nut dialing ring, the stretch rod upper end correspond to nut dialing ring and protrude into support sleeve, stretch rod top axial offer with to pre-
The threaded hole that tight bolt matches, which is characterized in that the hydraulic cylinder is arranged in tubular oversheath, the elastic supporting mechanism
It is arranged between stretch rod lower end and oversheath bottom, pendular body is connected on stretch rod, is equipped on the outside of pendular body and swings spherical surface,
There are the spaces that can hold pendular body swing in oversheath, there are gap between the cavity inner wall and stretch rod of the hydraulic cylinder,
Drive bearing is equipped between the stretch rod and pendular body.
2. a kind of self-adaptive hydraulic stretcher according to claim 1, which is characterized in that the elastic supporting mechanism is multiple
Position spring one, stretch rod lower end are connected with ring spring locating piece, are equipped with the cylinder for accommodating reset spring one in spring detent
One end elasticity of shape cavity, reset spring one contradicts on the cavity end face, and the other end elasticity of reset spring one contradicts
Oversheath bottom.
3. a kind of self-adaptive hydraulic stretcher according to claim 2, which is characterized in that the pendular body in a ring, is put
Dynamic spherical surface is located at pendular body periphery, and pendular body is set in spring detent periphery, and the drive bearing is arranged in pendular body and bullet
Between spring locating piece, spring detent periphery, which is equipped with, can hold the annular positioning groove that drive bearing is caught in.
4. a kind of self-adaptive hydraulic stretcher according to claim 3, which is characterized in that the pendular body include inner ring and
Outer ring, inner ring lower end are equipped with outward flange, and inner ring upper end is fixedly connected with circular orientation end plate, and the outer ring inner wall circumferentially offers
Slot, the outward flange and locating end plate of inner ring are corresponding to be inserted into the slot, outward flange and slot lower end face contact, locating end plate
With slot upper end face contact；The inner ring inner wall has been caught in upper retaining ring through card slot, and the spring detent periphery is caught in through card slot
There is lower retaining ring, drive bearing is between upper retaining ring and lower retaining ring；The upper and lower ends of the outer ring are respectively equipped in annular and support
Body and lower support.
5. a kind of self-adaptive hydraulic stretcher according to claim 4, which is characterized in that the oversheath upper end is equipped with ring
Shape cover board, oversheath lower end are equipped with bottom plate, and oversheath inner upper is equipped with neck bush, and neck bush inner wall is equipped in annular first
Step, hydraulic cylinder bottom are supported on interior step, and neck bush bottom is equipped with step in annular second, the hole of step in annular second
Diameter successively decreases from top to bottom, and the lower end of the stretch rod is equipped with transmission umbrella, and the transmission pack includes several circumferentially spaced
Stop block, corresponding second on the outside of stop block in step be equipped with limit inclined-plane, the piston of the hydraulic cylinder lower end can on transmission umbrella
End face contact；Upper support setting corresponding with neck bush lower end surface, lower support setting corresponding with bottom plate.
6. a kind of self-adaptive hydraulic stretcher according to claim 5, which is characterized in that the hydraulic cylinder includes that annular is outer
Cylinder body and inner cylinder body form oil pocket, annular piston are equipped in oil pocket between outer cylinder body and inner cylinder body, outer cylinder body lower end is equipped with annular
Cylinder cap, piston are fixedly connected with annular piston lid, and cavity is located at the middle part of inner cylinder body, are connected on the outer cylinder body and oil
The fuel filler neck of chamber connection, neck bush and oversheath side, which offer, can hold the through-hole that fuel filler neck passes through.
7. a kind of self-adaptive hydraulic stretcher according to claim 5, which is characterized in that the rotary drive mechanism includes
Motor one, baseplate underside are connected with retarder one, and motor one is connected with one input terminal of retarder, and one output end of retarder is connected with
Universal joint one axially offers cavity on the stretch rod, and bottom plate, which is equipped with, can hold the through-hole that universal joint passes through, universal joint one
The other end protrudes into cavity after sequentially passing through bottom plate, reset spring one and is sequentially connected with stretch rod.
8. a kind of self-adaptive hydraulic stretcher according to claim 7, which is characterized in that be equipped with bottom below the oversheath
, two telescopic cylinders are symmetrically set on pedestal, the piston rod end of telescopic cylinder is equipped with push plate, the bottom plate branch of oversheath
Support is in two push plates.
9. a kind of self-adaptive hydraulic stretcher according to claim 8, which is characterized in that be connected with motor on the pedestal
Two, motor two is connected with two input terminal of retarder, and two output end of retarder is connected with universal joint two, and nut dialing ring periphery, which is equipped with, to be passed
The other end of movable tooth, universal joint two is sequentially connected through gear pair and nut dialing ring；The support sleeve is fixedly connected with hydraulic cylinder, branch
It is located at below nut dialing ring in support set and is equipped with reset spring two, check ring is equipped with below reset spring two.
10. a kind of self-adaptive hydraulic stretcher according to claim 8, which is characterized in that the pedestal is equipped with close
Sensor one, support sleeve are equipped with proximity sensor two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811194928.2A CN109048314B (en) | 2018-10-15 | 2018-10-15 | Self-adaptive hydraulic stretcher |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811194928.2A CN109048314B (en) | 2018-10-15 | 2018-10-15 | Self-adaptive hydraulic stretcher |
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| Publication Number | Publication Date |
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| CN109048314A true CN109048314A (en) | 2018-12-21 |
| CN109048314B CN109048314B (en) | 2024-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110788477A (en) * | 2019-11-07 | 2020-02-14 | 国机铸锻机械有限公司 | Groove beam machining system |
| WO2021093112A1 (en) * | 2019-11-14 | 2021-05-20 | 四川腾菲克科技有限公司 | Bolt tightening method and bolt tightening system |
| CN112935781A (en) * | 2021-02-24 | 2021-06-11 | 东方电气集团科学技术研究院有限公司 | Automatic stretcher with self-adaptive structure |
| CN114952263A (en) * | 2022-06-07 | 2022-08-30 | 新疆理工学院 | Mechanical automatic feeding and discharging mechanical device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110788477A (en) * | 2019-11-07 | 2020-02-14 | 国机铸锻机械有限公司 | Groove beam machining system |
| WO2021093112A1 (en) * | 2019-11-14 | 2021-05-20 | 四川腾菲克科技有限公司 | Bolt tightening method and bolt tightening system |
| CN112935781A (en) * | 2021-02-24 | 2021-06-11 | 东方电气集团科学技术研究院有限公司 | Automatic stretcher with self-adaptive structure |
| CN114952263A (en) * | 2022-06-07 | 2022-08-30 | 新疆理工学院 | Mechanical automatic feeding and discharging mechanical device |
| CN114952263B (en) * | 2022-06-07 | 2024-04-05 | 新疆理工学院 | Mechanical automatic feeding and discharging mechanical device |
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|---|---|
| CN109048314B (en) | 2024-02-27 |
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