CN102785359B - Apparatus and method for for on-the-spot predilation - Google Patents
Apparatus and method for for on-the-spot predilation Download PDFInfo
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- CN102785359B CN102785359B CN201110145742.XA CN201110145742A CN102785359B CN 102785359 B CN102785359 B CN 102785359B CN 201110145742 A CN201110145742 A CN 201110145742A CN 102785359 B CN102785359 B CN 102785359B
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- elastic tube
- adapter
- tube
- axial hole
- radially
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- 239000000463 material Substances 0.000 claims description 12
- 230000001050 lubricating Effects 0.000 claims description 9
- 229920001971 elastomer Polymers 0.000 claims description 4
- 239000005060 rubber Substances 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 2
- 229920002379 silicone rubber Polymers 0.000 claims description 2
- 238000000034 method Methods 0.000 description 14
- 239000000758 substrate Substances 0.000 description 7
- 238000003780 insertion Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 229920002943 EPDM rubber Polymers 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 230000000717 retained Effects 0.000 description 2
- 210000000988 Bone and Bones Anatomy 0.000 description 1
- 210000000481 Breast Anatomy 0.000 description 1
- 206010011376 Crepitations Diseases 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004301 light adaptation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000036633 rest Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229920000260 silastic Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The present invention relates to a kind of Apparatus and method for for on-the-spot predilation, described device includes: elastic tube, and described elastic tube has front end, the rear end of the most described front end and extend through the axial hole of described elastic tube, and described hole is configured to receive a stay tube；And adapter, described adapter has by radially-outer surface and the end difference of planes bound that extends radially outwardly from described radially-outer surface, and extending through the axial hole of described adapter, the axial hole of described adapter has the diameter that the axial hole with described elastic tube is substantially the same.
Description
Technical field
This invention relates generally to the Apparatus and method for for on-the-spot predilation, more particularly to
The Apparatus and method for of structural intergrity is not reduced for on-the-spot predilation.
Background technology
On-the-spot predilation is that one is known for spring-backed quill is being applied in substrate it
The front method that this spring-backed quill carries out on-the-spot expansion, the method is big by having one
A stay tube in the external diameter of the internal diameter of this sleeve pipe inserts this sleeve pipe, so that this sleeve pipe is in footpath
To expansion.Expansion on it is being had the support circumference of cannon bone of sleeve pipe after this substrate is placed, this
Stay tube is removed so that this casing shrink and wrap this substrate, thus obtains this substrate
Electricity, air and/or water insulation.This substrate can be connect cable, terminal cable or
Person needs any other to insulate or the form of protection.
Traditional sleeve for on-the-spot predilation generally includes end difference in its one end.Such as ability
Known to field technique personnel, when a stay tube inserts from the other end of this sleeve pipe, this end difference carries
For the axial location of this sleeve pipe, and this end difference is allowed to expand in response to the insertion of a stay tube
?.But, this end difference reduces the structural intergrity of sleeve pipe, thus in operation,
End difference is it may happen that stress is concentrated, and it may cause crackle in the material and cause sealing
Lost efficacy.
Other alternatives that sleeve pipe puts on substrate include prestrain shrinkage method and push
Formula method.Sleeve pipe for prestrain shrinkage method was expanded before arriving erecting bed in advance
And it is carried on one stay tube.Sleeve pipe for push-in type method need not predilation.
Sleeve pipe for prestrain shrinkage method and the sleeve pipe for push-in type method all do not have ladder
Portion, thus there is not structural integrity problems.In some cases, for convenience of install or
Other reasons, needs the sleeve pipe for prestrain shrinkage method and the set for push-in type method
Pipe carries out on-the-spot predilation.But, some are used with some for the sleeve pipe of prestrain shrinkage method
Structure in the sleeve pipe of push-in type method makes it difficult to or cannot pass through conventional on-site predilation
Method carries out on-the-spot predilation to it.
Summary of the invention
On-the-spot predilation is allowed not reduce the structural intergrity of sleeve pipe it is thus desirable to a kind of
Apparatus and method for.
On the one hand, an embodiment of the disclosure provides a kind of device, and a stay tube will pass through
Predilation equipment inserts described device, and it is radially expandable that described predilation equipment has restriction
Inner surface and the pressure from the described outward extending plane of radially expandable inner surface radial direction
Bringing device, described device includes: elastic tube, and described elastic tube has front end, relative institute
Stating the rear end of front end and extend through the axial hole of described elastic tube, described hole is configured to connect
A stay tube described in receiving；And adapter, described adapter have by radially-outer surface and from
The end difference of the planes bound that described radially-outer surface extends radially outwardly, and extend through
The axial hole of described adapter, the axial hole of described adapter has and the axle of described elastic tube
The diameter being substantially the same to hole；Described adapter is by with described elastic tube the most coaxially
It is placed between described pressure applying means and described elastic tube, thus, in response to described
Stay tube inserts described elastic tube, described adapter described from the described rear end of described elastic tube
Plane is pushed against in the described plane of described pressure applying means by described elastic tube, described suitable
Frictional force between rear end and the described front end of described elastic tube of orchestration is sufficiently high thus described
Adapter and described elastic tube radially coextend, and the described footpath of described adapter is outside
Surface applies radially outward at the described radially expandable inner surface of described pressure applying means
Pressure.
On the other hand, an embodiment of the disclosure provides a method that, including: with bullet
Adapter placed the most coaxially by property pipe, and described elastic tube has front end, the most described before
The rear end held and the axial hole extending through described elastic tube, described hole is configured to receive props up
Stay tube, described adapter have by radially-outer surface and from described radially-outer surface radially to
The end difference of the planes bound of outer extension, and extend through the axial hole of described adapter,
The axial hole of described adapter has straight with what the axial hole of described elastic tube was substantially the same
Footpath；The pressure of the described radially-outer surface and predilation equipment that engage described adapter applies dress
Put the radially expandable inner surface of restriction；And described stay tube is inserted described elastic tube,
The outer dia of described stay tube is more than the described axial hole of described elastic tube and described adapter
The diameter in described axial hole.
The summary of the invention of the invention described above is not intended as describing each disclosed real of the present invention
Execute example or each implementation.Following detailed description and accompanying drawing more specifically illustrate
The exemplary embodiment of the present invention.
Accompanying drawing explanation
It is better understood embodiments of the invention with reference to following accompanying drawing.Parts in accompanying drawing
May not be the most drawn to scale:
Fig. 1 shows that one wherein will be inserted the cross sectional view of the elastic tube of a stay tube；
Fig. 2 shows and uses traditional method that a stay tube is inserted the mistake of the elastic tube shown in Fig. 1
The partial views in cross section of journey；
Fig. 3 shows a part for the predilation equipment for the process shown in Fig. 2；
Fig. 4 shows and uses inciting somebody to action of an embodiment according to disclosed method to prop up a stay tube
Insert the partial views in cross section of the process of the elastic tube of Fig. 1；
Fig. 5 shows an embodiment of the adapter according to the disclosure；
Fig. 6 shows the cross sectional view of the adapter of Fig. 5；
Fig. 7 shows the axonometric chart of an embodiment of the adapter according to the disclosure；
Fig. 8 shows the cross sectional view of the adapter of Fig. 7；
Fig. 9 shows and uses supporting of another embodiment according to disclosed method
Pipe inserts the cross sectional view of the process of the elastic tube of Fig. 1；
Figure 10 shows the plan view of an embodiment of the spacer according to the disclosure；
In above-mentioned each accompanying drawing, similar reference should be understood to mean identical, phase
Like or corresponding feature or function.
Detailed description of the invention
In the specific descriptions of following preferred embodiment, will be with reference to constituting a present invention part
Appended accompanying drawing.Appended accompanying drawing has been illustrated by way of example and has been capable of the present invention
Specific embodiment.The embodiment of example is not intended as the limit all realities according to the present invention
Execute example.It is appreciated that without departing from the scope of the present invention, it is possible to use other
Embodiment, it is also possible to carry out the structural or amendment of logicality.Therefore, following concrete
Describe and nonrestrictive, and the scope of the present invention is defined by the claims appended hereto.
In following specific descriptions, with reference to appended accompanying drawing.Accompanying drawing constitutes the present invention
A part, be illustrated by way of example in the accompanying drawings and can implement the specific of the present invention
Embodiment.In this regard, the term of directivity, such as "left", "right" " top
Portion ", " bottom ", "front", "rear", " guiding ", " forward ", " delaying "
Deng, the direction with reference to described in accompanying drawing uses.Therefore the parts of embodiments of the invention can quilt
Being placed in multiple different direction, the term of directivity is non-limiting for illustrative purposes
's.It is appreciated that without departing from the scope of the present invention, it is possible to use other are real
Execute example, it is also possible to carry out structural or logicality amendment.Therefore, following specific descriptions
And nonrestrictive, and the scope of the present invention is defined by the claims appended hereto.
Hereinafter, for clearness purpose, the cable connected is used to describe and exemplify the present invention
Each side.But, this citing is merely exemplary, it is possible to understand that and recognize this device
Part and method may be used for various be directed to use with predilation method obtain seal or protection should
With.
Fig. 1 shows the cross sectional view of elastic tube 10, and a stay tube is (such as accompanying drawing mark in Fig. 2
Remember 30 indications) elastic tube 10 will be inserted by scene.As it is shown in figure 1, elastic tube 10 wraps
Include front end 11, the rear end 13 of opposed front end 11, and extend through the axial of elastic tube 10
Hole 12, axial hole 12 is configured to receive a stay tube 30.Elastic tube 10 also includes adjacent front end
11 and the part 14 of possibly tapered of rear end 13.Elastic tube 10 can be traditional sleeve pipe, example
As, the sleeve pipe for prestrain shrinkage method and the sleeve pipe for push-in type method.
It will be appreciated by those skilled in the art that the axial of unexpanded or lax elastic tube 10
The diameter D1 in hole 12 is designed to the outer diameter D 2 less than the stay tube 30 that will insert, thus
When a stay tube 30 inserts axial hole 12, elastic tube 10 is expanded, and when removing a stay tube 30
Time shrink and wrap substrate (such as, the cable of connection).
Fig. 2 shows that a stay tube 30 is inserted the process of elastic tube 10 by use traditional method
Partial views in cross section.In the method, prop up stay tube 30 and insert bullet by a predilation equipment
Property pipe 10, this predilation equipment consists essentially of the axle 26 coupled with actuator (not shown),
Pressure applying means 20, and pressure applying means 20 is mechanically coupled to support (not shown)
Multiple bars 25, this support is operably secured ground or other surfaces.In operation
In, actuator acts on a stay tube 30 by axle 26 thus is drawn in from rear end by a stay tube 30
Elastic tube 10, pressure applying means 20 engages elastic tube 10 with in axially location in front end 11
Elastic tube 10, and pressure applying means 20 also is expected in response to causing stay tube 30
The power moved.For the ease of inserting, as the skilled personnel can understand, a stay tube 30
It is shown as also including having the guide head 32 of tapered profiles.
Specifically, with reference to Fig. 3, pressure applying means 20 includes multiple tabular pressure elements
23, the plurality of pressure elements 23 is radially arranged into one substantially continuous cylinder of common restriction
Inner surface 21 (see Fig. 2), pressure applying means 20 also includes and multiple pressure elements 23
The turn 24 that connects of each radially outer end.Multiple pressure elements 23 each by footpath
To being removably affixed, and internal surface of column 21 is in response on multiple pressure elements 23
Radially outer pressure is expansible.
But, due to the possibly tapered front end 11 of elastic tube 10 and multiple pressure elements 23 it
Between interface constitute, the possibly tapered front end 11 of elastic tube 10 can not be at multiple pressure elements 23
The radially outer pressure of upper applying.Therefore, the bullet when a stay tube 30 is inserted into axial hole 12
Property pipe 10 front end 11 easily deformable, its may damage elastic tube 10.It is additionally, since many
The internal surface of column 21 that individual pressure elements 23 limits can not be in response to the insertion of a stay tube 30
Expansion, the guide head 32 of a stay tube 30 cannot remove from the front end 11 of elastic tube 10, and
And this scene predilation process cannot complete.
Fig. 4 shows and uses inciting somebody to action of an embodiment according to disclosed method to prop up a stay tube
The partial views in cross section of the process of 30 elastic tubes 10 inserting Fig. 1.
First, coaxial with adapter 40 or approximation places elastic tube 10 coaxially.This position
Put permissible, such as, by adapter 50, be kept, as described in more detail below.With
An embodiment in the adapter 40 performing the method illustrates in figs. 5 and 6.As schemed
Showing, adapter 40 includes end difference 41, and end difference 41 is by radially-outer surface 42 with from this footpath
The plane 43 that exterior surface 42 extends radially outwardly limits.Adapter 40 also includes axial hole
44, lax axial hole 44 has what the diameter with lax axial hole 12 was substantially the same
Diameter, thus guide head 32 and a stay tube 30 can be by wherein releasing." substantially
Identical " the meaning be axial hole 44 have slightly larger than or the diameter in slightly smaller than axial hole 12
Also it is feasible.Such as, the diameter in axial hole 44 relative to axial hole 12 diameter ±
20mm, ± 10mm, ± 5mm, ± 1mm etc..
Afterwards, the radially-outer surface 42 engaging adapter 40 limits with multiple pressure elements 23
The internal surface of column 21 of fixed pressure applying means 20.This operation is permissible, such as, real as follows
Existing: multiple pressure elements 23 each on apply force radially so that multiple pressure
The internal surface of column 21 that element 23 limits is expanded；Afterwards by the radially-outer surface of adapter 40
Within 42 are placed on internal surface of column 21；Then removing this force radially, result is, by
Turn 24 in stretching tends to shrink, and the plurality of pressure elements 23 is by turn 24 footpath
To inwardly driving, thus engage with the radially-outer surface 42 of adapter 40.
Then, prop up stay tube 30 and be inserted into the axle of elastic tube 10 from rear end 13 towards front end 11
To hole 12.Owing to the outer diameter D 2 of a stay tube is more than the diameter D1 in axial hole 12, supporting
In the insertion process of pipe 30, the radial direction that elastic tube 10 is applied thereto at stay tube 30 to
It is forced radial dilatation under the effect of external pressure.More specifically, this radial outward pressure force is applied in
In the region that a stay tube 30 and guide head 32 arrive.When a stay tube 30 is in axial hole 12
During slip, between outer surface and the surface in axial hole 12 of a stay tube 30, produce friction.
More specifically, exist in the frictional force gone up axially rearward, at elastic tube 10 on a stay tube 30
Upper existence is at the counteracting frictional force axially forwardly gone up.Thus the front end 11 of elastic tube 10 is supported
Against the rear end 45 of adapter 40, the plane 43 of adapter 40 abuts against multiple pressure elements
The plane 22 that 23 are limited.By this way, elastic tube 10 and adapter 40 are at axially quilt
Location.
Interface between rear end 45 and the front end 11 of elastic tube 10 of adapter 40 is configured
For making interface friction force sufficiently high, thus suitable before guide head 32 arrives adapter 40
Orchestration 40 can coextend with elastic tube 10.In other words, adapter 40 and elastic tube 10
Between the radial direction stiction of interface be applied to adapter 40 more than pressure applying means 20
Radially-outer surface 42 on radially inner power, thus the rear end 45 of adapter 40 and bullet
Relative motion is not had to produce between the front end 11 of property pipe 10.Once guide head 32 is by elasticity
Pipe 10 and arrive adapter 40, guide head 32 is between guide head 32 and adapter 40
Contact surface apply force radially in adapter 40.Thus, the radial direction appearance of adapter 40
Face 42 applies force radially in multiple pressure elements 23.In this way, multiple pressure elements
23 be forced to be moved radially outward and internal surface of column 21 expand to allow guide head 32 from
Elastic tube 10 is pushed out.
Should be appreciated that between the rear end 45 of adapter 40 and the front end 11 of elastic tube 10
Interface friction can realize by selecting the suitable material of adapter 40 and elastic tube 10,
The material of adapter 40 and elastic tube 10 has great friction coefficient when contacting with each other.Such as,
Adapter 40 and elastic tube 10 can be by silicone rubber, EP rubbers (EPR), EPDM
Rubber (EPDM) or any other material manufacture being suitable for.Preferably, adapter 40
Also include that the footpath extending back and terminating at the rear end 45 of adapter 40 from plane 43 is outside
Surface 46, wherein, the diameter of this second radially-outer surface 46 is more than elastic tube 10 front end 11
Diameter, to guarantee the foot between the rear end 45 of adapter 40 and elastic tube 10 front end 11
Enough big contact surfaces, and then sufficiently large frictional force.
It should be noted that, predilation equipment can be to have different forms.Such as, multiple
Pressure elements 23 each can by respective spring the most radially displaceable fix.
Or, spring 24 can be by pneumatic or fluid power system or similar replacement.According to
The Apparatus and method for of the disclosure can be used along with the predilation equipment being arbitrarily suitable for.
Preferably, before a stay tube 30 is inserted axial hole 12, lubricating layer is applied to
The surface in axial hole 12 and the outer surface of a stay tube 30, thus a stay tube 30 can be by more
Insert swimmingly.Further, this lubricating layer play axial hole 12 and cable surface to be sealed it
Between the effect of sealant.In one example, lubricating layer can include fat, glue, oil or
Any other material being suitable for of person.Advantageously, this lubricating layer has high viscosity, is greater than 3
×105MPa s, thus this lubricating layer is not easy to flowing in operation, and can protect
Hold the surface being uniformly distributed in axial hole 12.Thus, reduce or eliminate due to lubricating layer
Uneven distribution and the risk of failure of insulation that causes.
The rear end 45 of adapter 40 illustrates in Figure 5, exemplarily, for annular body
Form.But, adapter 40 is not limited to this structure.The rear end 45 of adapter 40 can have
There are the outer surface being arbitrarily suitable for shape, such as, rectangle, hexagon, octagonal etc., as long as
This structure can provide sufficiently large contact surface between the front end 11 of elastic tube 10 with
Produce and be enough to overcome the stiction of the radially-inwardly power of pressure applying means 20.
Fig. 7 and Fig. 8 shows as placing adapter 40 and elastic tube 10 purpose coaxially,
May be used for implementing an embodiment of the adapter 50 of the process described above.This is exemplary
Adapter 50 include cylindrical outer surface 51 and axial hole 52 with allow predilation equipment axle
26 by wherein.Adapter 50 has the axial hole 12 of outer diameter D 3, D3 and elastic tube 10
Diameter and the diameter in axial hole 44 of adapter 40 be substantially the same, thus adapter
50 provide adapter 40 and elastic tube 10 when being positioned over adapter 40 and elastic tube 10 inside
Between substantial co-axially align.Outside the meaning adapter 50 " being substantially the same "
Footpath D3 have slightly larger than or the slightly smaller than axial hole 12 of elastic tube 10 and adapter 40
The diameter in axial hole 44 be also feasible.Such as, axial relative to elastic tube 10 of D3
Diameter ± the 10mm in the axial hole 44 of hole 12 and adapter 40, ± 5mm, ± 1mm
Deng.
In operation, adapter is engaged during insertion when the guide head 32 of a stay tube 30
50 rear end time, adapter 50 the most upwardly, and is finally pushed out in axially forwardly side
Adapter 40, it can be re-used adapter and elastic tube for connecting other.
As shown, adapter 50 also includes the flange 53 being positioned at its front end, this flange 53
Guarantee that adapter 50 is inserted into the degree of depth that axial hole 12 is predetermined.
It should be noted that, flange 53 not necessarily feature but optional feature, it is permissible
Use when needed.It should also be noted that adapter 50 is shown as being placed on adaptation
Inside the axial hole of device 40 and elastic tube 10.But, adapter 50 is not limited to this structure,
Any other structure being suitable for also is feasible.Such as, adapter 50 can be elastic tube,
It is around at least part of isometrical outer surface and at least part of the of adapter 40 of elastic tube 10
Two radially-outer surfaces 46 place (such as, be pushed on it), form close fit respectively.
Should be appreciated that and do not use adapter 50 and by coaxial with elastic tube 10 for adapter 40
It is also feasible that ground is placed.Such as, first adapter 40 is engaged with pressure applying means,
And manually keep adapter 40 coaxial with elastic tube 10, then a stay tube 30 is inserted
Elastic tube 10, removes manual holding force afterwards.Due in the insertion process of stay tube 30,
Adapter 40 is stressed between pressure applying means 20 and elastic tube 10, elastic tube 10
With the co-axially align between adapter 40 can be kept.
In sum, employing according to an advantage of the Apparatus and method for of the disclosure is, sleeve pipe,
Such as, the sleeve pipe for prestrain shrinkage method and the sleeve pipe for push-in type method can pass through
Tradition predilation equipment is by on-the-spot predilation, and without the mould of these sleeve pipes is done any changing
Dynamic.In other words, by using the Apparatus and method for according to the disclosure, for prestrain shrinkage
The sleeve pipe of method and the sleeve pipe for push-in type method compatible at least two can apply sleeve pipe in base
Method at the end.Thus according to the Apparatus and method for of the disclosure in the application to cost sensitivity
Advantageous.
Additionally, to the such as sleeve pipe for prestrain shrinkage method and the set for push-in type method
Pipe carries out the advantage of on-the-spot predilation and is, sleeve pipe by the degree of on-the-spot predilation can by with
Family determines according to the diameter of the cable that will connect or terminate.Preferably, elastic tube 10
It is made up less than material or the percentage elongation material more than 300% of shore A45 degree of hardness, example
As, liquid silastic, thus elastic tube 10 is applicable to the cable of major diameter scope.
Further, owing to elastic tube 10 is not used for the conventional sleeve of conventional on-site method for pre-expanding
The end difference of pipe, reduces or eliminates owing at end difference, stress concentrates the insulation caused to lose
The risk of effect.
Fig. 9 shows and uses supporting of another embodiment according to disclosed method
Pipe 30 inserts the sectional view of the process of the elastic tube 10 of Fig. 1.With the process phase shown in Fig. 4
Ratio, this process also includes placing spacer 60 around the front end of a stay tube 30 for inserting
During gap is provided between the rear end 13 of elastic tube 10 and stay tube 30, its advantage exists
Following description will be apparent from.
One embodiment of the spacer 60 that may be used for the process of Fig. 9 is shown in Figure 10
In.Spacer 60 includes pad, and this pad has base portion 61 and from the extension of this base portion 61
Multiple fingers 62.Spacer 60 can be higher than the hardness of elastic tube 10 by hardness and be less than and prop up
The material of the hardness of stay tube 30 is made.Such as, spacer 60 includes that hardness is shore D40-70
Elastic tube, and elastic tube 10 includes the elastic tube that hardness is shore A50-75.Preferably,
The end of finger 62 and the connecting portion of finger 62 and base portion 61 are roundings, to reduce
Or eliminate the risk of the inner surface of infringement elastic tube 10.
In operation, spacer 60 is wrapped around the outer surface of the adjacent front end of a stay tube 30,
Afterwards, prop up stay tube 30 and be inserted into axial hole 12 together with spacer 60.Spacer 60 is inserted into
Axial hole 12 to desired depth so that it is outside that base portion 61 is retained in axial hole 12, is positioned at base
The edge of the pad in portion 61 is outwards dug away from axle, during inserting a stay tube 30,
It stops base portion 61 to be dragged into axial hole 12, and so, spacer 60 rests on elastic tube 10
Rear end 13, and between rear end 13 and stay tube 30, keep gap.At seeker 32
After being pushed out elastic tube 10, spacer 60 is removed and can be reused for insert
Other a stay tube.
Preferably, the coefficient of friction between spacer 60 and elastic tube 10 is more than spacer
Coefficient of friction between 60 and a stay tube 30, thus a stay tube can insert more swimmingly.
It should be noted that, spacer 60 is not limited to the structure shown in Figure 10.Spacer
60 can be to have the form being arbitrarily suitable for, such as, the finger of multiple separation.In operation,
The finger of multiple separation is passed through, such as adhesive tape, along propping up the outer surface of stay tube 30 the most solid
Fixed.Stay tube 30 is inserted into desired depth together with the finger of the multiple separation being fixed thereon,
The finger making certain length is retained in the outside in axial hole 12, and adhesive tape is removed afterwards.Knot
Fruit is that the exterior section of multiple separation fingers outwards tilts away from axle, is inserting a stay tube 30
During, it stops this exterior section to be dragged into axial hole 12, so, spacer 60
Rest on the rear end 13 of elastic tube 10, and between rear end 13 and a stay tube 30 between holding
Gap.
In sum, except the advantage listed, the configuration of spacer 60 reduces hole
Contact area between surface and the surface of a stay tube 30 of 12, thus a stay tube 30 can
More easily or more quickly inserted.
Additionally, due to have between the surface and the outer surface of a stay tube 30 in axial hole 12
Gap, lubricant can be stayed the surface in axial hole 12 equably.
Further, owing to the material hardness of spacer 60 is higher than the material hardness of elastic tube 10,
The gross distortion of the rear end 13 of elastic tube 10 is prevented during inserting a stay tube 30.
The elastic tube according to disclosed method and device combination with tapered portion is carried out
Describe.But, these methods and device are not limited to this.These methods and device can be used
In having the elastic tube of any other applicable structure, such as, there is the elasticity of isometrical outer surface
Pipe.
In disclosure herein, for illustrative purposes, the operation associated methods of device embodiments
Embodiment is described.It will be appreciated, however, that the operation of device and side in the disclosure
The enforcement of method can be the most independent.That is, disclosed device embodiments can be according to it
His method is run, and disclosed embodiment of the method can be implemented by other devices.
It is appreciated that the embodiment of foregoing description is only used for describing and the unrestricted present invention, this
Skilled person is appreciated that and can modify the present invention and deform, if the most inclined
From the spirit and scope of the present invention.Above-mentioned amendment and deformation are considered as the present invention and appended
The scope of claim.Protection scope of the present invention is defined by the claims appended hereto.This
Outward, any reference in claim is understood not to limitation of the present invention.Dynamic
Word " includes " and its deformation is not excluded for occurring in claim other the element beyond statement
Or step.Indefinite article " one " before element or step be not excluded for occurring multiple so
Element or step.
Claims (16)
1. a device, a stay tube will insert described device by predilation equipment, described pre-
Expansion device have restriction radially expandable inner surface and from described radially expandable in
The pressure applying means of the plane that surface extends radially outwardly, described device includes:
Elastic tube, described elastic tube has front end, the rear end of the most described front end and extension
Running through the axial hole of described elastic tube, described hole is configured to receive described stay tube；And
Adapter, described adapter has by radially-outer surface and from described radially-outer surface
The end difference of the planes bound extended radially outwardly, and extend through the axle of described adapter
Xiang Kong, the axial hole that the axial hole of described adapter has with described elastic tube is substantially the same
Diameter；
Described adapter is placed on described pressure the most coaxially with described elastic tube and is applied
Between device and described elastic tube, thus, in response to described stay tube from described elastic tube
Described elastic tube is inserted in described rear end, and the described plane of described adapter is pushed away by described elastic tube
Lean against in the described plane of described pressure applying means, the rear end of described adapter and described bullet
Frictional force between the described front end of property pipe is sufficiently high thus described adapter and described elastic tube
Radially coextend, and the described radially-outer surface of described adapter applies at described pressure
The described radially expandable inner surface of device applies radially outer pressure.
Device the most according to claim 1, also includes:
Adapter, is configured to provide for axially aligning between described elastic tube and described adapter.
Device the most according to claim 2, wherein, described adapter includes outside cylinder
Surface and be placed on described axial hole at least some of and described of described elastic tube
The described axial hole of adapter at least some of in, the diameter of described cylindrical outer surface and institute
State the diameter in the described axial hole of elastic tube and the described axial hole of described adapter substantially
Identical.
Device the most according to claim 1, wherein, described elastic tube has less than Shao
The hardness of family name's hardness A45 degree.
Device the most according to claim 1, wherein, described elastic tube is by including silicon rubber
A kind of material in glue, EP rubbers is made.
Device the most according to claim 5, wherein, described EP rubbers includes ternary
EP rubbers.
Device the most according to claim 1, wherein, described elastic tube is big by percentage elongation
Material in 300% is made.
Device the most according to claim 1, wherein, described adapter also includes from institute
The second footpath stating the rear end that the described plane of adapter extends and terminates in described adapter is outside
Surface, and wherein, the diameter of described second radially-outer surface is more than outside described elastic tube
Portion's diameter.
Device the most according to claim 8, wherein, the front end of described elastic tube is cone
Shape and described second radially-outer surface diameter more than described elastic tube foremost outside
Portion's diameter.
Device the most according to claim 1, also includes that viscosity is more than 3 × 105mPa·s
Lubricating layer, described lubricating layer be applied to the surface in the described axial hole of described elastic tube with
And the outer surface of described stay tube.
11. devices according to claim 1, also include spacer, described spacer
It is configured to during described stay tube inserts described elastic tube be placed on described elastic tube
Described rear end and between the described axial hole of described elastic tube and described stay tube.
12. devices according to claim 11, wherein, described spacer includes having
Base portion and the pad of multiple fingers extended from described base portion, described pad includes that hardness is big
Hardness in described elastic tube and the elastic tube of the hardness less than described stay tube.
13. 1 kinds of methods, including:
Place adapter the most coaxially with elastic tube, described elastic tube has front end, phase
To the rear end of described front end and the axial hole that extends through described elastic tube, described hole configures
For receiving a stay tube, described adapter has by radially-outer surface and from described radial direction appearance
Face diameter is to the end difference of outward extending planes bound, and extends through described adapter
Axial hole, the axial hole of described adapter has the axial hole substantially phase with described elastic tube
Same diameter；
The pressure of the described radially-outer surface and predilation equipment that engage described adapter applies dress
Put the radially expandable inner surface of restriction；And
Described stay tube is inserted from described rear end described elastic tube, the outside of described stay tube
Diameter is straight more than the described axial hole of the described axial hole of described elastic tube and described adapter
Footpath.
14. methods according to claim 13, also include:
Before described inserting step, apply viscosity more than 3 × 105The lubricating layer of mPa s arrives
The surface in the described axial hole of described elastic tube and the outer surface of described stay tube.
15. methods according to claim 13, also include:
Before described inserting step, spacer is placed in the front end around described stay tube.
16. methods according to claim 15, wherein, described spacer includes having
Base portion and the pad of multiple fingers extended from described base portion, described pad includes that hardness is big
Hardness in described elastic tube and the elastic tube of the hardness less than described stay tube.
Priority Applications (11)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110145742.XA CN102785359B (en) | 2011-05-20 | Apparatus and method for for on-the-spot predilation | |
| KR1020137033364A KR20140034831A (en) | 2011-05-20 | 2011-07-27 | Device and method for field expansion |
| US14/116,298 US9343893B2 (en) | 2011-05-20 | 2011-07-27 | Device and method for field expansion |
| EP11866163.6A EP2709824A4 (en) | 2011-05-20 | 2011-07-27 | Device and method for field expansion |
| JP2014510638A JP5832639B2 (en) | 2011-05-20 | 2011-07-27 | Device and method for area expansion |
| BR112013029930A BR112013029930A2 (en) | 2011-05-20 | 2011-07-27 | device and method for field expansion |
| PCT/CN2011/077689 WO2012159348A1 (en) | 2011-05-20 | 2011-07-27 | Device and method for field expansion |
| CA2835656A CA2835656A1 (en) | 2011-05-20 | 2011-07-27 | Device and method for field expansion |
| RU2013156466/13A RU2576206C2 (en) | 2011-05-20 | 2011-07-27 | Device and method for pre-installation expansion |
| MX2013013264A MX2013013264A (en) | 2011-05-20 | 2011-07-27 | Device and method for field expansion. |
| TW101117900A TWI549391B (en) | 2011-05-20 | 2012-05-18 | Device and method for field expansion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110145742.XA CN102785359B (en) | 2011-05-20 | Apparatus and method for for on-the-spot predilation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102785359A CN102785359A (en) | 2012-11-21 |
| CN102785359B true CN102785359B (en) | 2016-12-14 |
Family
ID=
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161214 Termination date: 20210520 |