CN105328444B - A kind of hydraulic elongator - Google Patents
A kind of hydraulic elongator Download PDFInfo
- Publication number
- CN105328444B CN105328444B CN201510763447.9A CN201510763447A CN105328444B CN 105328444 B CN105328444 B CN 105328444B CN 201510763447 A CN201510763447 A CN 201510763447A CN 105328444 B CN105328444 B CN 105328444B
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- Prior art keywords
- nut
- hitch
- pilot hole
- nut hitch
- guide finger
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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
- B23P19/067—Bolt tensioners
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a kind of hydraulic elongator, including：Hydraulic cylinder, the cross section of the cylinder body of hydraulic cylinder is annular, and the cylinder body of hydraulic cylinder surrounds the cavity passed through for the one end of bolt to be tensioned, and the end face of the piston of hydraulic cylinder forms pushing tow face；Stretch nut, it is made up of the first nut hitch and the second nut hitch, when the first nut hitch and the second nut sleeve button are locked together, the internal thread of the internal thread of first nut hitch and the second nut hitch collectively forms the internal thread coordinated with the external screw thread of bolt, and stretching nut close to the end face of hydraulic cylinder there is the stress surface coordinated with pushing tow face stretching nut is pushed axial movement parallel to hydraulic cylinder in piston top.Present invention solves the technical problem that be to overcome the stretching nut of existing hydraulic elongator and bolt connection complex operation to be tensioned, it is time-consuming the shortcomings that, there is provided it is a kind of easy and the hydraulic elongator that stretching nut is quickly connected with bolt can be realized.
Description
Technical field
The present invention relates to Automatic manual transmission field.Specially a kind of hydraulic elongator.
Background technology
Bolts and nuts are that mechanical field assembles indispensable parts, and the fixed form of bolts and nuts is more solid than other
It is more firm, more reliable to determine mode, thus turns into the most frequently used mode that two or more parts are fixed together.Due to
The bolt that some large scale equipments use is thicker, its pretightning force is very big, if the fastening and dismounting of bolt are completed by manually
Words, labor intensity are very high.Further, since connection between part needs several, more than ten or even tens bolts to realize, manually
Bolt is fastened and dismantled successively, the stress distribution of each link position can be caused uneven, so as to influence connector
Intensity.
At present, bolt is stretched using hydraulic elongator more, hydraulic elongator includes hydraulic cylinder and stretching connecting portion
Part, stretching connection member pass through its projection and the work of hydraulic cylinder perpendicular to bolt straight line by its internal thread and bolt connection
The end face of plug is engaged.Its operation principle is to make stretching connection member and bolt connection, and hydraulic oil is injected into hydraulic jack, living
Plug promotes the projection of stretching connection member, applies tensile force to bolt, is elongated bolt, afterwards, the fastening carried out to bolt
Or disassembling section can be easier to realize, and it can realize that the pretightning force of fastening is bigger.
In connecting bolt and stretching connection member, the axis for stretching connection member is alignd with the axis of bolt, makes drawing
The external screw thread for stretching the internal thread of connection member and the end of bolt coordinates, and this operation needs set operator heavy gas with all worries set aside could be real
It is existing, if operator's hand slightly rocks or in the bad environment of light, the internal thread and bolt for stretching connection member can be caused
The external screw thread of end unmatch.Rotate and draw after the internal thread and the external screw thread of the end of bolt for stretching connection member are worked good
Connection member is stretched, bolt and stretching connection member are realized after the full thread engagement of the two.In some assembling fields, for example, it is high
Warm or underwater working environment, the operating time of operating personnel are limited, it is necessary to rapidly connect stretching connection member and bolt.
And existing bolt is with stretching the connection of connection member not only in the outer of the internal thread and the end of bolt for making stretching connection member
Screw thread needs longer time when coordinating, and the process that stretching connection member is rotated to the position of needs is needed to stretch connection member
The many circles of rotation, this also make it that the operating time is long, causes operating efficiency relatively low.
The content of the invention
Present invention solves the technical problem that it is to overcome the stretching nut of existing hydraulic elongator and bolt to be tensioned
The shortcomings that attended operation is complicated, time-consuming, there is provided a kind of easy and the hydraulic tensioning that stretching nut is quickly connected with bolt can be realized
Device.
The hydraulic elongator of the present invention, including：
Hydraulic cylinder, the cross section of the cylinder body of the hydraulic cylinder is annular, and the cylinder body of the hydraulic cylinder is surrounded for be tensioned
The cavity that the one end of bolt passes through, the end face of the piston of the hydraulic cylinder form pushing tow face；
Nut, including the first nut hitch and the second nut hitch are stretched, when the first nut hitch and described second
When nut sleeve button is locked together, the common structure of internal thread of the internal thread of the first nut hitch and the second nut hitch
Into the internal thread with the cooperation of the external screw thread of the bolt, the stretching nut has and the top close to the end face of the hydraulic cylinder
The stress surface that pushing surface coordinates makes the stretching nut to push axial movement parallel to the hydraulic cylinder in the piston top.
Preferably, the first nut sleeve fastener has the first pilot hole and the second pilot hole, first pilot hole
The diameter parallel of axis and the second pilot hole, the one end of first pilot hole away from the second nut hitch are provided with institute
State the first step of the second nut hitch；
The second nut sleeve fastener has the first pilot hole and the second pilot hole, the first assembling of the second nut hitch
The diameter parallel of the axis in hole and the second pilot hole, the first pilot hole and the second pilot hole of the second nut hitch include
Coaxial Part I and Part II, the Part I is compared with the Part II further from first nut sleeve
Button, the diameter of the Part I is more than the diameter of the Part II, and is formed in Part I and Part II junction
Towards the blocking surface of the Part I；
The stretching nut also includes：
Locking axle sleeve, has inner chamber, and the locking axle sleeve part is located at the first pilot hole of the second nut hitch
In Part I, the part of the locking axle sleeve is provided with ball hole, and another part of the locking axle sleeve passes through described second
First pilot hole of the first pilot hole of nut hitch and the first nut hitch is simultaneously fixed, the lock with the first nut hitch
One end that mandrel is enclosed on the first nut hitch is fixed is provided with the opening communicated with the inner chamber；
First guide finger, it is coaxial positioned at the interior intracavitary of the locking axle sleeve and the locking axle sleeve, and can relatively described lock
Axial movement of the mandrel set along locking axle sleeve, one end of first guide finger is by the first pilot hole of the first nut hitch
First step limit prevent guide finger from from first pilot hole be provided with the first step one end remove, described first
The end of guide finger is provided with can reach pressing component outside the second nut hitch by the opening of the inner chamber, and described the
One guide finger is provided with ball grooves in the position close to its other end, the ball grooves close to the first guide finger other end the
One side wall tilts since bottom to the other end of first guide finger, second relative with the first side wall of the ball grooves
Side wall is perpendicular to the axis of first guide finger, the end of the first guide finger other end and the first side of the ball grooves
Part between wall forms decorative pearl on top of an official cap outer rim；
First spring, positioned at the interior intracavitary of the locking axle sleeve, and positioned at first guide finger the other end with it is described
Between the inwall of inner chamber, first spring can apply towards the first step to first guide finger under compression
Power；
At least one ball, a part for the ball are located in the ball hole of the locking axle sleeve, in the locked condition,
The ball is outwards jacked up by the decorative pearl on top of an official cap outer rim of first guide finger, so as to which part is exposed to the locking axle sleeve, the rolling
The blocking surface that pearl is exposed in the part of the locking axle sleeve and the first pilot hole of the second nut hitch offsets to prevent
The locking axle sleeve moves towards the direction of the first nut hitch, and in the unlocked state, the ball part is located at the locking
In the ball hole of axle sleeve, partly in the ball grooves of the first guide finger, the ball enters institute with first guide finger
State the Part II of the first pilot hole；
Second guide finger, described second guide finger one end are located at first of the second pilot hole of the second nut hitch
In point, the other end of second guide finger passes through the second pilot hole of the second nut hitch and the first nut hitch
The second pilot hole and fixed with the first nut hitch.
Preferably, the locking axle sleeve is located at one in the Part I of the first pilot hole of the second nut hitch
End is provided with limited cap, and the diameter of the limited cap is more than the diameter of the locking axle sleeve and more than the second of first pilot hole
Partial diameter, the limited cap is formed with the locking axle sleeve junction can be with the first pilot hole of the second nut hitch
The first mating surface for coordinating of blocking surface, second guide finger is located at the first of the second pilot hole of the second nut hitch
One end in part has a limited cap, and the diameter of the limited cap of second guide finger be more than second guide finger diameter and
More than the diameter of the Part II of second pilot hole, the limited cap of second guide finger and the second guide finger junction
Form the second mating surface that can coordinate with the blocking surface of the second pilot hole of the second nut hitch.
Pushed away preferably, being provided with and can apply to the second nut hitch in the first pilot hole of the first nut hitch
The second spring of power, interior be provided with of the second pilot hole of the first nut hitch can apply thrust to the second nut hitch
3rd spring.
Preferably, being arranged with the first correction bulb outside the locking axle sleeve, the first correction bulb includes bulb and sleeve pipe,
The second nut hitch position relative with the described first correction bulb is provided with the bulb part with the described first correction bulb
The first depression to match, the second spring is enclosed on outside the sleeve pipe of the first correction bulb, and the second spring is located at
The second step of direction the second nut hitch in first pilot hole of the first nut hitch and the described first correction
Between the first limiting convex block that the bulb part of bulb is formed, second guide finger is provided with the second correction bulb, and described second
Correction bulb includes bulb and sleeve pipe, the second nut hitch with described second correct the relative position of bulb provided with it is described
The second depression that the ball head split-phase of second correction bulb is coincide, sleeve pipe of the 3rd spring housing in the described second correction bulb
Outside, the step and described second of direction the second nut hitch and in the second pilot hole of the first nut hitch
Between the second limiting convex block of bulb part formation for correcting bulb.
Preferably, the ball grooves are the endless groove around the first guide finger outer rim, the axis of the endless groove
Overlapped with the axis of first guide finger, the ball hole is around the locking axle sleeve ring-type of one week, the ball edge
The ring-type is evenly arranged in the ball hole.
Preferably, the blocking surface is inclined-plane.
Preferably, pressing component includes stretching with the rod-like members of the described first guiding pin connection and with the rod-like members
The cap member connected for one end of the first nut hitch.
Preferably, being connected through a screw thread between the locking axle sleeve and the first nut hitch, described second is oriented to
It is connected through a screw thread between pin and the first nut hitch.
Preferably, the first nut sleeve fastener has the first arc surface, the internal thread of the first nut hitch is set
On first arc surface, first pilot hole and the second pilot hole are located at the both ends of first arc surface respectively；Institute
Stating the second nut sleeve fastener has the first arc surface, the first arc surface of the second nut hitch and the first nut hitch
First arc surface is relative, and the internal thread of the second nut hitch is arranged on the first arc surface of the second nut hitch,
The first pilot hole and the second pilot hole of second nut hitch are located at the two of the first arc surface of the second nut hitch respectively
End.
Preferably, the first nut sleeve fastener has second arc surface parallel with its first arc surface, described second
Nut sleeve fastener has second arc surface parallel with its first arc surface, and the first nut hitch and the deduction of points of the second nut sleeve are other
Inserted provided with least one permission shaft in order to rotate the blind hole for the stretching nut being under locking state, the blind hole
Opening is respectively on the second arc surface of the first nut hitch and on the second arc surface of the second nut hitch.
Preferably, the first nut hitch and the second nut hitch are close to the end face of hydraulic cylinder at least a portion
For relative to the inclined inclined-plane of axis of the stretching nut under the locking state, under the stretching nut check state, institute
The inclined-plane on the inclined-plane and the second nut hitch of stating the first nut hitch forms the stress surface, the piston of the hydraulic cylinder
Pushing tow face is also inclined-plane.
Compared to the prior art the hydraulic elongator of the present invention, has the advantages that：
1st, the stretching nut of hydraulic elongator of the invention can also unlock be separated from each other the by can mutually be locked together
One nut hitch and the second nut hitch are formed, and when being fastened using the hydraulic elongator of the present invention, stretch nut and bolt
Between screw thread coordinate the locking operation by stretching nut to realize, release and fit through solution between stretching nut and bolt
Lock is operated to realize, with needing to align the axis for stretching nut with the axis of bolt in the prior art, and multipurpose rotary stretches
The operation of nut is compared, and the operation locked and unlocked is faster, under some special working environments, such as high temperature or underwater work
Industry, efficiently operation, which seems, is even more important.
2nd, one end junction of the limited cap of the stretching nut of hydraulic elongator and locking axle sleeve formation can be with the second nut
The first mating surface that the blocking surface of first pilot hole of hitch coordinates.In the unlocked state, the first nut hitch and the second nut
Hitch is separated from each other, the first nut hitch and the second nut hitch apart from it is farthest when, the first mating surface of limited cap with
First blocking surface of the first pilot hole of the second nut hitch coordinates, i.e. the first blocking surface block locking axle sleeve relative to the
The movement of one nut hitch, so as to prevent that the first nut hitch departs from locking axle sleeve in the unlocked state.
3rd, stretch the second spring of nut and the 3rd spring make it that the unblock operation for stretching nut is simpler, operator is only
Need the pressing component of the first guide finger of pressing, you can realize unblock.
4th, the deflection of locking axle sleeve can just prevented by stretching the setting of the first correction bulb of nut.Meanwhile first corrects
The sleeve portion of bulb provides stronger mounting means for second spring, can prevent from occurring partially when second spring from being compressed
Tiltedly.
5th, it is inclined-plane to stretch the blocking surface of nut and the first mating surface, and the first of the first pilot hole of the second nut hitch hinders
Block face and the first mating surface offset cooperation when, can not only produce parallel in locking axle sleeve axis, while also produce vertical
In the power of locking axle sleeve axis so that locking axle sleeve can neither produce the movement parallel to axis relative to the first pilot hole,
The movement perpendicular to axis can not be produced relative to the first pilot hole, that is, is rocked.
Brief description of the drawings
Fig. 1 is the structural representation of the hydraulic elongator of one embodiment of the invention.
Fig. 2 is the structural representation of the stretching nut of the hydraulic elongator of one embodiment of the invention.
Fig. 3 is sectional view of the stretching nut along A-A in Fig. 2.
Fig. 4 is the enlarged diagram of the part B in Fig. 3.
Fig. 5 is the first nut hitch of stretching nut and the structural representation of the second nut hitch in Fig. 3.
Fig. 6 is the mplifying structure schematic diagram of the first guide finger of the stretching nut in Fig. 2.
Fig. 7 is the mplifying structure schematic diagram of the locking axle sleeve of the stretching nut in Fig. 2.
Reference
1- stretches nut
11- the first nut hitch, the arc surfaces of 111- first, 1111- parts internal thread, the pilot holes of 112- first, 1121-
One step, 1122- second steps, 1123- second springs, the pilot holes of 113- second, the springs of 1131- the 3rd, the circular arcs of 114- second
Face, 1141,1142- assembling blind hole, 115- inclined-planes；
12- the second nut hitch, the arc surfaces of 121- first, 1211- parts internal thread, the pilot holes of 122- first, 1221-
A part, 1222- Part II, the blocking surfaces of 1223- first, the pilot holes of 123- second, the blocking surfaces of 1231- second, 1232- first
Part, 1233- Part II, the arc surfaces of 124- second, 1241,1242- assembling blind holes, 125- inclined-planes, 126- first is recessed,
127- second is recessed；
13- locking axle sleeves, 131- inner chambers, 132- ball holes, 133- limited caps, the mating surfaces of 1331- first, 134- ventilations
Hole；
The guide fingers of 14- first, 141- pressing components, 1411- rod-like members, 1412- cap members, 142- ball grooves,
1421- the first side walls, 1422- second sidewalls, 143- decorative pearl on top of an official cap outer rims；
The springs of 15- first；
16- balls；
The guide fingers of 17- second, 171- limited caps, the mating surfaces of 1711- second；
18- first corrects bulb, 181- bulbs, 182- sleeve pipes；
19- second corrects bulb, 191- bulbs, 192- sleeve pipes.
2- hydraulic cylinders
21- cylinder bodies, 22- pistons, 221- pushing tows face, 23- cavitys, 24- sealing devices, 25- support meanss, 26- holes.
3- lifting bolts
4- snap joints
5- dials rod
Embodiment
Fig. 1 is the structural representation of the hydraulic elongator of one embodiment of the invention, as shown in figure 1, the hydraulic pressure of the present invention
Stretcher includes hydraulic cylinder 2 and stretching nut 1.Wherein, hydraulic cylinder has cylinder body 21 and piston 22, and the cross section of cylinder body 21 is ring
Shape, the cross section of piston 22 is circle.The cylinder body 21 of the hydraulic cylinder 2 surrounds one for bolt (not shown) to be tensioned
The cavity 23 that end passes through.The end face of piston 22 forms pushing tow face 221.
The cylinder body 21 of hydraulic cylinder 2 is connected with snap joint 4 by transit joint and compound gasket, for being noted into cylinder body 21
Enter hydraulic oil.Sealing device 24 is provided between the inwall of piston 22 and cylinder body 2, because cylinder body is ring-type, piston 22 is with forming
Sealing device 24, sealing dress are equipped between the inwall of cylinder body 21 of inner ring and between the inwall of cylinder body 21 of piston 22 and composition outer shroud
Putting 24, generally set is on the piston 22 or embedding sealing ring on the piston 22.Lifting bolt 3 is also equipped with cylinder body 21.
The one end of hydraulic cylinder 2 away from stretching nut 1 has support meanss 25, and support meanss 25 can be with the cylinder body 21 of hydraulic cylinder
It is integrally formed.Support meanss 25 are supported on part to be tightened or on the ground, there is the hole 26 stretched into for dialling rod 5 in support meanss 25.
Operator can stretch into group rod 5 in hole 26 the nut rotation for stirring bolt, so as to clamp nut and bolt.
Stretching nut 1 includes the first nut hitch 11 and the second nut sleeve 12 is detained, when the first nut hitch 11 and institute
When stating the second nut hitch 12 and being locked together, internal thread 1111 and the second nut hitch of the first nut hitch 11
12 internal thread 1211 collectively forms the internal thread coordinated with the external screw thread of the bolt.The stretching nut 1 is close to the liquid
There is the stress surface coordinated with the pushing tow face 221 to make the stretching nut can be under the pushing tow of piston 21 for the end face of cylinder pressure 2
Axial direction parallel to the hydraulic cylinder is the axial movement of bolt.
When being stretched to bolt, the end of bolt is set to pass through what the cylinder body 21 of support meanss 25 and hydraulic cylinder 2 surrounded
Cavity 23, the first nut hitch 11 and the second nut hitch 12 of stretching nut are locked and make it and the end of bolt formation spiral shell
Line immovable fitting.Starting hydraulic cylinder 2 makes piston 21 promote stretching nut to be moved parallel to the axis of bolt, so that bolt produces
The deformation of axial direction, the nut of bolt is stirred using group rod 2 makes its fastening.When the piston of hydraulic cylinder sets back, the axle of bolt
To eliminating deformation, bolt, nut and best fastening effect is reached by fastener.
In the present invention, the screw thread between nut and bolt is stretched to coordinate by the locking operation of stretching nut to realize,
Release and fit through unblock operation between stretching nut and bolt to realize, with needing that the axle of nut will be stretched in the prior art
Line is alignd with the axis of bolt, and the operation of multipurpose rotary stretching nut is compared, and the operation locked and unlocked is faster, at some
Under special working environment, such as high temperature or underwater operation, efficiently operation, which seems, is even more important.
Fig. 2 is the structural representation of the stretching nut of the hydraulic elongator of one embodiment of the invention, and Fig. 3 is in Fig. 2
Sectional view of the nut along A-A is stretched, Fig. 4 is the enlarged diagram of the part A in Fig. 3.As shown in figs 2-4, drawing of the invention
Stretch nut, in addition to locking axle sleeve 3, the first guide finger 4, the first spring 5, the guide finger 7 of ball 6 and second.
In the present embodiment, as shown in figure 5, the first nut hitch 11 has the first arc surface 111, first circle
Cambered surface 111 has internal thread 1111.The first nut hitch 11 also has the second arc surface 114, the second arc surface 114 and
One arc surface 111 is parallel, and the radius of the second arc surface 114 is more than the radius of the first arc surface 111.The first nut hitch
11 have the first pilot hole 112 and the second pilot hole 113, and the pilot hole 113 of the first pilot hole 112 and second is located at institute respectively
The both ends of the first arc surface 111, and the diameter parallel of the axis of first pilot hole 112 and the second pilot hole 113 are stated, it is described
The one end of first pilot hole 112 away from the second nut hitch 12 is provided with the first step of the second nut hitch 12
1121。
The second nut hitch 12 has the first arc surface 121, the first arc surface 121 of the second nut hitch 12
It is relative with the first arc surface 111 of the first nut hitch 11, and the diameter of the two is identical.The second nut hitch
12 the first arc surface 121 has internal thread 1211, the nut hitch 12 of internal thread 1111 and second of the first nut hitch 11
Each parameter of screw thread of internal thread 1211 is identical.The second nut hitch 12 also has the second arc surface 124, the second circular arc
Face 124 is parallel with the first arc surface 121, and the second arc surface 114 of the radius of the second arc surface 124 and the first nut hitch 11
Radius it is identical.
In the state of the first nut hitch 11 and the locking of the second nut hitch 12, the first of the first nut hitch 11
First arc surface 121 of the nut hitch 12 of arc surface 111 and second forms a circle, the second circle of the first nut hitch 11 substantially
Second arc surface 124 of the nut hitch 12 of cambered surface 114 and second forms a circle substantially.The internal thread of first nut hitch 11
1111 and second nut hitch 12 internal thread 1211 collectively form with the external screw thread of bolt to be connected coordinate internal thread.
In the present embodiment, as shown in figure 5, the first nut hitch 11 and the second nut hitch 12 are respectively equipped with least
One allows shaft to insert in order to rotate the assembling blind hole for the stretching nut being under locking state, the opening of the blind hole
Respectively on the second arc surface 114 of the first nut hitch 11 and the second arc surface 124 of the second nut hitch 12.Such as
Shown in Fig. 5, the first nut hitch 11 has assembling blind hole 1141, and the 1142, second nut hitch 12 has assembling blind hole 1241,
1242。
The second nut hitch 12 has the first pilot hole 122 and the second pilot hole 123, and the of the second nut hitch 12
One pilot hole 122 and the second pilot hole 123 are located at the both ends of first arc surface 121 respectively, and the second nut hitch 12
The diameter parallel of the axis of first pilot hole 122 and the second pilot hole 123.The pilot hole 123 of first pilot hole 122 and second
Include coaxial Part I and Part II, the Part I is compared with the Part II further from first spiral shell
Mother set button 11.The diameter of the Part I is more than the diameter of the Part II, and is combined in Part I with Part II
Place forms the blocking surface towards the Part I.That is the first pilot hole 122 and the second pilot hole 123 are shoulder hole, ladder
Blocking surface is formed towards the face that Part I is the big part in aperture.
Specific in the present embodiment, as shown in figure 5, the first pilot hole 122 of the second nut hitch 12 has Part I
1221 and Part II 1222, Part I 1221 is formed towards the Part I 1221 with the junction of Part II 1222
First blocking surface 1223.Second pilot hole 123 of the second nut hitch 12 has Part I 1232 and Part II 1233, the
A part 1232 forms the second blocking surface 1231 towards the Part I 1232 with the junction of Part II 1233.
As shown in figs. 4 and 7, locking axle sleeve 13 has inner chamber 131, and the part of the locking axle sleeve 13 is located at described second
In the Part I 1221 of first pilot hole 122 of nut hitch 12.The part of the locking axle sleeve 13 is provided with ball hole
132, for accommodating the part of ball 16.In the present embodiment, locking axle sleeve 13 is additionally provided with passage 134, and passage 134 is located at
Between ball hole 132 and the termination of the part.
Another part of the locking axle sleeve 13 passes through the first pilot hole 122 and the first spiral shell of the second nut hitch 12
First pilot hole 112 of mother set button 11 is simultaneously fixed, the axis of locking axle sleeve 13 and the first nut with the first nut hitch 11
The axis of the axis of hitch 11 and the second nut hitch 12 overlaps.The one of the nut hitch 11 of locking axle sleeve 13 and first fixation
End is provided with the opening communicated with the inner chamber 131, and opening communicates with the outside of the first nut axle sleeve 11, and the opening of inner chamber 131
Axis overlapped with the axis of locking axle sleeve 13.
As shown in figure 4, the inner chamber 131 that the first guide finger 14 is located at the locking axle sleeve 13 is interior coaxial with locking axle sleeve 13,
And can axial movement of the relatively described locking axle sleeve 13 along locking axle sleeve 13.As shown in fig. 6, one end of first guide finger 14
Provided with the pressing component 141 that can be reached by the opening of the inner chamber 131 outside the second nut hitch 12, pressing component
141 can promote the first guide finger 14 to be moved relative to left of the locking axle sleeve 13 into Fig. 4.First guide finger 14 is provided with and pressed
One end of splenium part 141 by the first step 1121 of the first pilot hole 112 of the first nut hitch 11 be limited to this first
In pilot hole 112, the first step 1121 is located at the first pilot hole of the first nut hitch 11 away from the second nut hitch 12
One end, the step surface of first step 1121 is towards the second nut hitch 12 so that the first guide finger 14 can not be from the first assembling
The end in hole removes.
As shown in fig. 6, first guide finger 14 is provided with ball grooves 142, ball grooves 142 in the position close to its other end
Opening on the cylinder of the first guide finger 14, i.e., parallel on the face of the axis of the first guide finger 14, rather than first leads
To on the end face of pin 14.The ball grooves 142 are opened close to the first side wall 1421 of the other end of the first guide finger 14 from bottom
The other end inclination begun to first guide finger 14, the second sidewall relative with the first side wall 1421 of the ball grooves 142
1422 perpendicular to first guide finger 14 axis.The end of the other end of first guide finger 14 and the ball grooves 142
The first side wall 1421 between part form decorative pearl on top of an official cap outer rim 143.When the first guide finger 14 relative to locking axle sleeve 3 into Fig. 3
Right side movement when so that ball 16 can be moved to first along inclined the first side wall 1421 from the ball grooves 142
The decorative pearl on top of an official cap outer rim 143 of guide finger 14, is outwards jacked up by decorative pearl on top of an official cap outer rim 143.
First spring 15 is located in the inner chamber 131 of the locking axle sleeve 13, and positioned at the another of first guide finger 14
Between end and the inwall of the inner chamber 131, when the first spring 15 is in compressive state, first guide finger 14 can be applied
Towards the power of first step 1121.
Ball 16 is at least one, and a part for the ball 16 is located in the ball hole 132 of the locking axle sleeve 13.
Under locking state, ball 16 is outwards jacked up by the decorative pearl on top of an official cap outer rim 143 of the first guide finger 14, so as to which part is exposed to the lock shaft
Set 13.Ball 16 is exposed to first in the part of the locking axle sleeve 13 and the first pilot hole 122 of the second nut hitch 12
Blocking surface 1223 offsets, to prevent the locking axle sleeve 13 from being moved towards the direction of the first nut hitch 11.In the unlocked state,
The part of ball 16 is located in the ball hole 132 of the locking axle sleeve 13, partly positioned at the ball grooves 142 of the first guide finger 14
It is interior, and as first guide finger 14 enters the Part II 1222 of first pilot hole 122.
Described one end of second guide finger 17 is located at the Part I of the second pilot hole 123 of the second nut hitch 12
In 1232, the other end of second guide finger 17 is through the second pilot hole 123 of the second nut hitch 12 and described the
Second pilot hole 113 of one nut hitch 11 is simultaneously fixed with the first nut hitch 11.During locking and unblock, the
Two guide fingers 17 serve the effect of guiding, the both ends of the first nut hitch 11 and the both ends of the second nut hitch 12 is reached respectively
To stress balance.
The operation being unlocked to stretching nut is as follows：The pressing component 141 of first guide finger 14 is pressed inwards, i.e. direction
The direction of second nut hitch 12 is pressed, and the first guide finger 14 overcomes the thrust of the first spring 15 to close to the second nut hitch 12
Direction is moved, meanwhile, locking axle sleeve 13 will not move due to being fixed with the first nut hitch 11.When the first guiding
Pin 14 be moved to its ball grooves 142 it is relative with the ball hole 132 of locking axle sleeve 13 when, the part of ball 16 is along ball grooves 142
The first side wall 1421 enter ball grooves 142, ball 16 submerges to outer end in ball hole 132, departs from and the second nut hitch
The cooperation of 12 the first blocking surface 1223.Now, the first nut hitch 11 or the second nut hitch 12 are applied makes phase both it
The power mutually left, the first guide finger 14, axle sleeve and ball 16 move relative to the second nut hitch 12 together, and ball 16 enters
In the Part II of first pilot hole 122 of the second nut hitch 12.Because the diameter of Part II 1222 compares Part I
1221 diameter is small, ball 16 be limited to by the inwall of Part II 1222 in ball grooves 142 and ball hole 132 and can not be outside
It is mobile.Now, pressing component 141 is unclamped, because ball 16 can not be displaced outwardly, the outer i.e. axis away from the first guide finger 4
Direction, the first guide finger 14 just can not move under the thrust of the first spring 15 towards the first nut hitch 11, the first spring 15
It is limited at compressive state.Now just realize unblock.
When being locked in the unlocked state, the end of bolt is set to stretch into the first nut hitch 11 and the second nut hitch 12
Between, in the unlocked state, the first nut hitch 11 separates with the second nut hitch 12, therebetween with it is larger away from
From therefore, aforesaid operations can be easily achieved, it is not necessary to make the internal thread of nut and the outer spiral shell of the end of bolt in the prior art
The operation that line coordinates.Then, make the first nut hitch 11 and the second nut hitch 12 close to each other, guide finger, locking axle sleeve 13
Moved together relative to the second nut hitch 12 with ball 16, when ball 16 enters the first pilot hole of the second nut hitch 12
During 122 Part I 1221, due to the inwall restriction without Part II 1222, under the promotion of the first spring 15, lead
Moved to pin relative to locking axle sleeve 13 to close to the direction of the first nut hitch 11, side wall of the ball 16 along ball grooves 142
It is ejected, until the inner terminal of ball 16 is jacked up by decorative pearl on top of an official cap outer rim 143, as shown in Figure 4.Now, revocation makes the first nut hitch
11 and second external force close to each other of nut hitch 12, the external force can be the kneading power of hand, the blocking surface of ball 16 and first
1223 coordinate, and realize locking.
When being locked to stretching nut, operator manually pinches the first nut hitch 11 and the second nut hitch 12
It is combined, you can realize the locking of stretching nut.Manually press the pressing component of the first guide finger 14 and application makes
The unblock of stretching nut can be achieved in the power that one nut hitch 11 and the second nut hitch 12 are separated from each other.With installing prior art
In the operation of nut compare, the locking and unblock of the stretching nut of hydraulic elongator of the invention are not only easy to operate, simultaneously
The time of installation stretching nut nut can be also greatlyd save, so as to improve the efficiency of tensile bolt.
Preferably, as shown in figure 4, the locking axle sleeve 13 is located at the first pilot hole of the second nut hitch 12
One end in 122 Part I 1221 is provided with limited cap 133, and limited cap 133 can be integrally formed with locking axle sleeve 13,
It can be stationarily connected to together, in the present embodiment, limited cap 133 is integrally formed with locking axle sleeve 13.It is described spacing
The diameter of cap 133 is more than the diameter of the locking axle sleeve 13 and is more than the straight of the Part II 1222 of first pilot hole 122
Footpath.One end junction of the limited cap 133 and the locking axle sleeve 13 is formed can be with the first of the second nut hitch 12
The first mating surface 1331 that first blocking surface 1223 of pilot hole 122 coordinates.In the unlocked state, the first nut hitch 11 and
Two nut hitch 12 are separated from each other, the first nut hitch 11 and the second nut hitch 12 apart from it is farthest when, limited cap 133
The first mating surface 1331 and the first blocking surface 1223 of the first pilot hole 122 of the second nut hitch 12 coordinate, i.e., first resistance
Block face 1223 blocks the movement relative to the first nut hitch 11 of locking axle sleeve 13, so as to prevent in the unlocked state first
Nut hitch 11 departs from locking axle sleeve 13.
Similarly, second guide finger 17 is located at the Part I of the second pilot hole 123 of the second nut hitch 12
One end in 1232 is provided with limited cap 171, and the diameter of the limited cap 171 of second guide finger 17 is more than second guide finger
17 diameter and the diameter for being more than the Part II 1233 of second pilot hole 123.The limited cap 171 of second guide finger 17
Being formed with the junction of the second guide finger 17 can be with the second blocking surface of the second pilot hole of the second nut hitch 12
1231 the second mating surfaces 1711 coordinated, prevent that the first nut hitch 11 departs from the second guide finger 17 in the unlocked state.
Preferably, as shown in figure 4, be provided with the first pilot hole 112 of the first nut hitch 11 can be to described the
Two nut hitch 12 apply the second spring 1123 of thrust, and being provided with the second pilot hole 113 of the first nut hitch 11 can
Apply the 3rd spring 1131 of thrust to the second nut hitch 12.In the state of locking, second spring 1123 and the 3rd
Spring 1131 is in the state compressed.In unblock, by pressure pressing component 141, ball grooves 142 align with ball hole 132
When, ball 16 enters ball grooves 142, and the first spring 15 is in the state compressed.Now, the spring of second spring 1123 and the 3rd
1131 the second nut hitch 12 of promotion leave the first nut hitch 11, i.e., ball 16 relative to the first nut hitch 11 into Fig. 3
Right move into the second nut hitch 12 the first pilot hole 122 Part II, that is, realize unblock.Second spring
1123 and the 3rd spring 1131 cause unblock operation it is simpler, operator only need press the first guide finger 14 press section
Part 141, you can realize unblock.
Preferably, as shown in figure 4, being arranged with the first correction bulb 18 outside the locking axle sleeve 13, first corrects bulb
18 include bulb 181 and sleeve pipe 182.The second nut hitch 12 and the described first relative position of correction bulb 18 be provided with
The first depression 126 that the part of bulb 181 of the first correction bulb 18 matches.The second spring 1123 is enclosed on described
Outside the sleeve pipe 182 of one correction bulb 18, and the second spring 1123 is located at the first pilot hole of the first nut hitch 11
The part of bulb 181 of the second step 1122 of direction the second nut hitch 12 in 112 and the described first correction bulb 18
Between the first limiting convex block formed.
Second guide finger 17 is provided with the second correction bulb 19, and the second correction bulb 19 includes bulb 191 and set
Pipe 192, the second nut hitch 12 position relative with the described second correction bulb 19 are provided with and the described second correction bulb
The second depression 127 that 19 part of bulb 191 matches, the 3rd spring 1131 are enclosed on the set of the second correction bulb 19
Outside pipe 192, and the platform of direction the second nut hitch 12 in the second pilot hole 113 of the first nut hitch 11
Between the second limiting convex block that the part of bulb 191 of rank and the second correction bulb 19 is formed.
Because the length of locking axle sleeve 13 is far longer than its diameter, and locking axle sleeve 13 is the first of the first nut hitch 11
It is relative in first pilot hole 122 of the nut hitch 12 of pilot hole 112 and second to slide, therefore be not close-fitting with the cooperation of pilot hole
Close, therefore locking axle sleeve 13 easily glances off in pilot hole.In the state of stretching nut is in unblock, the first nut sleeve
Button 11 separates with the second nut hitch 12, the middle part of locking axle sleeve 13 not with the first pilot hole 112 of the first nut hitch 11 and
First pilot hole 122 of the second nut hitch 12 coordinates, it is easier to glances off.And the setting of the first correction bulb 18 just can be with
Prevent the deflection of locking axle sleeve 13.Meanwhile first correction bulb 18 the part of sleeve pipe 182 for second spring 1123 provide it is more firm
Solid mounting means, glanced off when can prevent second spring 1123 from being compressed.What the bulb 181 of the first correction bulb 18 was formed
First limiting convex block is the point of application that second spring 1123 provides the force to the second nut hitch 12.Second correction bulb 19
Effect with first correct bulb 8 effect it is similar, here is omitted.
In the present embodiment, the ball grooves 142 is around the endless groove of the outer rim of the first guide finger 14, the ring-types
The axis of groove overlaps with the axis of first guide finger 14, and the ball hole 132 is to surround the locking axle sleeve 13 1 weeks
Ring-type, the ball 16 are evenly arranged in the ball hole 132 along the ring-type.In other examples, also can be along
The excircle of one guide finger sets multiple independent ball grooves, and multiple independent ball holes, ball grooves are set on locking axle sleeve
Corresponded with the position of ball hole.Now, the structure for preventing that the first guide finger from rotating relative to locking axle sleeve, example are preferably provided
Such as, projection can be set on the excircle of the first guide finger, the track with its diameter parallel is set on the inwall of locking axle sleeve,
So, rotated when the first guide finger is still moved when either static relative to locking axle sleeve all without relative to locking axle sleeve,
So as to ensure that the position of ball grooves and ball hole corresponds.
Preferably, the first blocking surface 1223 and the second pilot hole of the first pilot hole 122 of the second nut hitch 122
Second blocking surface 1231 is inclined-plane, i.e., blocking surface tilts relative to the axis of pilot hole.When blocking surface is inclined-plane, lock shaft
The first mating surface 1331 of limited cap 133 and the second mating surface 1711 of the second guide finger 17 of set 13 are also inclined-plane.Second spiral shell
First blocking surface 1223 of the first pilot hole 122 of mother set button 12 and the first mating surface 1331 offset cooperation when, can not only produce
It is raw parallel in the axis of locking axle sleeve 13, while also produce the power perpendicular to the axis of locking axle sleeve 13 so that locking axle sleeve 13
The movement parallel to axis can neither be produced relative to the first pilot hole 122, can not produce and hang down relative to the first pilot hole 122
Directly in the movement of axis, that is, rock.Second blocking surface 1231 of the second pilot hole of the second nut hitch 12 and the second mating surface
1711 movement for coordinating and also make it that the second guide finger 17 can neither be relative to the generation of the second pilot hole parallel to axis that offsets,
Rocking perpendicular to axis can not be produced equivalent to the second pilot hole.
Certainly in other examples, blocking surface can also be perpendicular to the axis of pilot hole.Each portion described in this paragraph
Part is the part of the second nut hitch.
Pressing component 141 include the rod-like members 1411 that are connected with first guide finger 14 and with the rod-like members
1411 stretch out in the cap member 1412 of one end connection of the first nut hitch 11, and the area of cap member 1412 is larger, just
In applying pressing force, rod-like members 1411 are used to transmit pressing force.Certainly, in other examples, cap member 1412 is also
Stopping means can be set to simultaneously, when the nut hitch 11 of cap member 1412 and first offsets, ball grooves 142 just with rolling
The hole of bead 132 aligns.
It is connected through a screw thread between the locking axle sleeve 13 and the first nut hitch 11, specifically, the first nut sleeve
Part of first pilot hole 112 of button 11 between its first step 1121 and second step 1122 is provided with internal thread, lock shaft
Set 13 is connected by its external screw thread with internal thread.Pass through screw thread between second guide finger 17 and the first nut hitch 11
Connection.In the present embodiment, the first pilot hole 112 of the first nut hitch 11 is through hole, and the second pilot hole 113 is blind hole.
As shown in Fig. 2 the first nut hitch 11 and the second nut hitch 12 close to the end face of the hydraulic cylinder 2 at least
A part is the inclined inclined-plane of axis relative to the stretching nut under the locking state.As shown in Fig. 2 the first nut hitch
11 have an inclined-plane 115, and the second nut hitch 12 has an inclined-plane 125, and the vertical axis in Fig. 2 show the axis of stretching nut.
Under the stretching nut check state, the inclined-plane 115 of the first nut hitch 11 is oblique with the second nut hitch 12
Face 125 forms the stress surface, the pushing tow face 221 and inclined-plane of the piston 22 of the hydraulic cylinder 2.
During tensile bolt, piston 22 applies the axis perpendicular to stretching nut 1 to the inclined-plane for stretching nut 1
Power, i.e. the power for locking stretching nut 1.Piston 22 also promotes stretching nut 1 to be moved along its axis, and stretching nut 1 drives bolt
Elongation strain.The hydraulic elongator of the present invention makes piston promote an operation of stretching nut to can be achieved two by starting hydraulic cylinder
Individual action --- locking stretching nut and tensile bolt.Compared with prior art, nut will be stretched before tensile bolt by eliminating
The operation for coordinating the two screw thread on bolt, therefore, it may be such that operation is easier, further increase efficiency.
Above example is only the exemplary embodiment of the present invention, is not used in the limitation present invention, protection scope of the present invention
It is defined by the claims.Those skilled in the art make various in the essence and protection domain of the present invention to the present invention
Modification or equivalent substitution are also within the scope of the present invention.
Claims (10)
- A kind of 1. hydraulic elongator, it is characterised in that including：Hydraulic cylinder, the cross section of the cylinder body of the hydraulic cylinder is annular, and the cylinder body of the hydraulic cylinder is surrounded for bolt to be tensioned The cavity that passes through of one end, the end face of the piston of the hydraulic cylinder forms pushing tow face；Nut, including the first nut hitch and the second nut hitch are stretched, when the first nut hitch and second nut When hitch is locked together, the internal thread of the internal thread of the first nut hitch and the second nut hitch collectively form with The internal thread that the external screw thread of the bolt coordinates, the stretching nut have and the pushing tow face close to the end face of the hydraulic cylinder The stress surface of cooperation makes the stretching nut to push axial movement parallel to the hydraulic cylinder in the piston top；The first nut sleeve fastener has the first pilot hole and the second pilot hole, the axis of first pilot hole and the second assembling The diameter parallel in hole, the one end of first pilot hole away from the second nut hitch are provided with the second nut hitch First step；The second nut sleeve fastener has the first pilot hole and the second pilot hole, the first pilot hole of the second nut hitch The diameter parallel of axis and the second pilot hole, the first pilot hole and the second pilot hole of the second nut hitch are included coaxially Part I and Part II, the Part I is compared with the Part II further from the first nut hitch, institute The diameter for stating Part I is more than the diameter of the Part II, and is formed in Part I and Part II junction towards institute State the blocking surface of Part I；The stretching nut also includes：Locking axle sleeve, has inner chamber, and the locking axle sleeve part is located at the first of the first pilot hole of the second nut hitch In part, the part of the locking axle sleeve is provided with ball hole, and another part of the locking axle sleeve passes through second nut First pilot hole of the first pilot hole of hitch and the first nut hitch is simultaneously fixed, the lock shaft with the first nut hitch It is enclosed on and is provided with the opening communicated with the inner chamber with one end that the first nut hitch is fixed；First guide finger, it is coaxial positioned at the interior intracavitary of the locking axle sleeve and the locking axle sleeve, and can relatively described lock shaft Axial movement of the set along locking axle sleeve, one end of first guide finger is by the of the first pilot hole of the first nut hitch One step, which limits, prevents guide finger to be removed from being provided with one end of the first step from first pilot hole, and described first is oriented to The end of pin is provided with the pressing component that can be reached by the opening of the inner chamber outside the second nut hitch, and described first leads Ball grooves are provided with the position close to its other end to pin, the ball grooves are close to the first side of the first guide finger other end Wall tilts since bottom to the other end of first guide finger, the second sidewall relative with the first side wall of the ball grooves Perpendicular to the axis of first guide finger, the end of the first guide finger other end and the first side wall of the ball grooves it Between part formed decorative pearl on top of an official cap outer rim；First spring, positioned at the interior intracavitary of the locking axle sleeve, and the other end positioned at first guide finger and the inner chamber Inwall between, first spring can apply towards the first step to first guide finger under compression Power；At least one ball, a part for the ball is located in the ball hole of the locking axle sleeve, in the locked condition, described Ball is outwards jacked up by the decorative pearl on top of an official cap outer rim of first guide finger, so as to which part is exposed to the locking axle sleeve, the ball dew Offseted for the part of the locking axle sleeve and the blocking surface in the first pilot hole of the second nut hitch with described in prevention Locking axle sleeve moves towards the direction of the first nut hitch, and in the unlocked state, the ball part is located at the locking axle sleeve Ball hole in, partly in the ball grooves of the first guide finger, the ball enters described the with first guide finger The Part II of one pilot hole；Second guide finger, described second guide finger one end are located at the Part I of the second pilot hole of the second nut hitch It is interior, the second pilot hole and the first nut hitch of the other end of second guide finger through the second nut hitch Second pilot hole is simultaneously fixed with the first nut hitch；One end that the locking axle sleeve is located in the Part I of the first pilot hole of the second nut hitch is provided with limited cap, The diameter of the limited cap is more than the diameter of the diameter of the locking axle sleeve and the Part II more than first pilot hole, institute State limited cap and formed and can coordinated with the blocking surface of the first pilot hole of the second nut hitch with the locking axle sleeve junction The first mating surface, second guide finger is located at one end in the Part I of the second pilot hole of the second nut hitch With limited cap, and the diameter of the limited cap of second guide finger is more than the diameter of second guide finger and more than described second The diameter of the Part II of pilot hole, the limited cap of second guide finger and the second guide finger junction formed can with it is described The second mating surface that the blocking surface of second pilot hole of the second nut hitch coordinates.
- 2. hydraulic elongator according to claim 1, it is characterised in that：In first pilot hole of the first nut hitch Provided with the second spring that can apply thrust to the second nut hitch, it is provided with the second pilot hole of the first nut hitch The 3rd spring of thrust can be applied to the second nut hitch.
- 3. hydraulic elongator according to claim 2, it is characterised in that：The first correction ball is arranged with outside the locking axle sleeve Head, the first correction bulb include bulb and sleeve pipe, and the second nut hitch position relative with the described first correction bulb is set There is the first depression that the ball head split-phase with the described first correction bulb is coincide, the second spring is enclosed on the first correction ball Outside the sleeve pipe of head, and the second spring is located at direction second nut in the first pilot hole of the first nut hitch Between the first limiting convex block that the bulb part of the second step of hitch and the first correction bulb is formed, described second is oriented to Pin is provided with the second correction bulb, and the second correction bulb includes bulb and sleeve pipe, the second nut hitch and described second Correct the relative position of bulb and be provided with the second depression being coincide with the ball head split-phase of the described second correction bulb, the 3rd bullet Spring is enclosed on outside the sleeve pipe of the second correction bulb, and described in the direction in the second pilot hole of the first nut hitch Between the second limiting convex block that the bulb part of the step of second nut hitch and the second correction bulb is formed.
- 4. the hydraulic elongator according to Claims 2 or 3, it is characterised in that：The ball grooves are to be led around described first To the endless groove of pin outer rim, the axis of the endless groove overlaps with the axis of first guide finger, and the ball hole is circular The locking axle sleeve ring-type of one week, the ball are evenly arranged in the ball hole along the ring-type.
- 5. the hydraulic elongator according to Claims 2 or 3, it is characterised in that：The blocking surface is inclined-plane.
- 6. the hydraulic elongator according to Claims 2 or 3, it is characterised in that：Pressing component includes being oriented to described first The rod-like members of pin connection and stretch out in the cap member that one end of the first nut hitch is connected with the rod-like members.
- 7. the hydraulic elongator according to Claims 2 or 3, it is characterised in that：The locking axle sleeve and first nut It is connected through a screw thread between hitch, is connected through a screw thread between second guide finger and the first nut hitch.
- 8. the hydraulic elongator according to Claims 2 or 3, it is characterised in that：The first nut sleeve fastener has the first circle Cambered surface, the internal thread of the first nut hitch are arranged on first arc surface, first pilot hole and the second assembling Hole is located at the both ends of first arc surface respectively；The second nut sleeve fastener has the first arc surface, second nut sleeve First arc surface of button is relative with the first arc surface of the first nut hitch, and the internal thread of the second nut hitch is set On the first arc surface of the second nut hitch, the first pilot hole and the second pilot hole of the second nut hitch are located at respectively The both ends of first arc surface of the second nut hitch.
- 9. hydraulic elongator according to claim 8, it is characterised in that：The first nut sleeve fastener has and its first circle The second parallel arc surface of cambered surface, the second nut sleeve fastener has second arc surface parallel with its first arc surface, described First nut hitch and the second nut sleeve button are respectively equipped with least one permission shaft and inserted in order to rotate in locking shape The blind hole of stretching nut under state, the opening of the blind hole is respectively on the second arc surface of the first nut hitch and the On second arc surface of two nut hitch.
- 10. the hydraulic elongator according to Claims 2 or 3, it is characterised in that：The first nut hitch and the second nut Hitch is to be tilted relative to the axis of the stretching nut under the locking state close to the end face of hydraulic cylinder at least a portion Inclined-plane, it is described stretching nut check state under, the inclined-plane of the first nut hitch is oblique with the second nut hitch Face forms the stress surface, and the pushing tow face of the piston of the hydraulic cylinder is also inclined-plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510763447.9A CN105328444B (en) | 2015-11-10 | 2015-11-10 | A kind of hydraulic elongator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510763447.9A CN105328444B (en) | 2015-11-10 | 2015-11-10 | A kind of hydraulic elongator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105328444A CN105328444A (en) | 2016-02-17 |
| CN105328444B true CN105328444B (en) | 2018-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510763447.9A Active CN105328444B (en) | 2015-11-10 | 2015-11-10 | A kind of hydraulic elongator |
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| CN (1) | CN105328444B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108007782A (en) * | 2017-12-29 | 2018-05-08 | 襄阳福瑞特机械制造有限公司 | Bolt strength detection device and method |
| CN114083490B (en) * | 2022-01-25 | 2022-04-12 | 江苏华恩机械科技有限公司 | Hydraulic stretcher with intelligent calibration function and method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9726092D0 (en) * | 1997-12-09 | 1998-02-11 | Hydra Tight Ltd | Tensioning device |
| GB9909523D0 (en) * | 1999-04-27 | 1999-06-23 | More Nicholas | Quick release nut |
| CN203031251U (en) * | 2012-11-07 | 2013-07-03 | 武汉卡特工业股份有限公司 | Bolt tensioner |
| CN202922180U (en) * | 2012-11-07 | 2013-05-08 | 武汉卡特工业股份有限公司 | Hydraulic tensioner structure for deepwater bolt |
| CN203817743U (en) * | 2014-05-26 | 2014-09-10 | 邹城市辰星煤机制修有限公司 | Hydraulic bolt tensioner |
| CN205200978U (en) * | 2015-11-10 | 2016-05-04 | 北京科路工业装备股份有限公司 | Hydraulic stretching ware |
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2015
- 2015-11-10 CN CN201510763447.9A patent/CN105328444B/en active Active
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