WO2011009158A1 - Crampon pour dispositif d’accouplement hydraulique - Google Patents

Crampon pour dispositif d’accouplement hydraulique Download PDF

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Publication number
WO2011009158A1
WO2011009158A1 PCT/AU2010/000904 AU2010000904W WO2011009158A1 WO 2011009158 A1 WO2011009158 A1 WO 2011009158A1 AU 2010000904 W AU2010000904 W AU 2010000904W WO 2011009158 A1 WO2011009158 A1 WO 2011009158A1
Authority
WO
WIPO (PCT)
Prior art keywords
staple
legs
female part
fluid coupling
male part
Prior art date
Application number
PCT/AU2010/000904
Other languages
English (en)
Inventor
Leigh Wayne Morrison
Kon Lai
Original Assignee
Australasian Steel Products Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2009903407A external-priority patent/AU2009903407A0/en
Application filed by Australasian Steel Products Pty Ltd filed Critical Australasian Steel Products Pty Ltd
Publication of WO2011009158A1 publication Critical patent/WO2011009158A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/12—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using hooks, pawls or other movable or insertable locking members
    • F16L37/14—Joints secured by inserting between mating surfaces an element, e.g. a piece of wire, a pin, a chain
    • F16L37/142—Joints secured by inserting between mating surfaces an element, e.g. a piece of wire, a pin, a chain where the securing element is inserted tangentially
    • F16L37/144—Joints secured by inserting between mating surfaces an element, e.g. a piece of wire, a pin, a chain where the securing element is inserted tangentially the securing element being U-shaped

Definitions

  • the present invention relates to a staple for interlocking an engageable male part and a female part of a fluid coupling, and a fluid coupling that utilises this staple.
  • Fluid couplings that include an engageable male part and a female part which are interlockable by a staple are used in the mining industry and other industries to connect hydraulic hose assemblies.
  • the staple that interlocks the male part and the female part has two legs which are insertable into two bores on the female part to seat within an annular groove on the male part when the male part and female part are engaged.
  • Hoses or other components such as adapters may be connected to the male and female parts of the coupling.
  • hydraulic fluid couplings can be subject to pressures of in excess of 500 bar when fluid is static or flowing in the hose. The pressure in the fluid coupling may spike or fluctuate over time. External mechanical tension or stress to the hose may also subject the fluid coupling to pressure.
  • the male and female parts of the fluid coupling bias apart when the fluid coupling is under pressure, resulting in a force on the legs of the staple due to the male and female parts bearing against the legs of the staple.
  • a staple for interlocking an engageable male part and a female part of a fluid coupling.
  • the male part of the fluid coupling has an external annular groove.
  • the female part of the fluid coupling has a longitudinal axis, an inlet end for axially receiving an inlet end of the male part, and two bores positioned to align with the groove on the male part when the male part is engaged with the female part.
  • the staple has two legs which are insertable into the two bores on the female part to seat within the groove on the male part when the male part and female part are engaged.
  • Each of the legs has a proximal end proximate a connection between the legs and a distal end.
  • At least one protrusion is provided on or near a distal end of a leg. The protrusion is in a position that enables it to overlay an edge or adjacent surface of a bore in the female part once inserted through that bore.
  • the two legs of the staple of the present invention are inserted into two bores on the female part and seat within an annular groove on the male part to interlock the female part and male part.
  • the staple is also locked within the bores by one or more protrusions on the distal end of the legs.
  • the protrusions are in a position that can overlay and/or engage the edges and/or surface proximate the edges of the bore, resisting extraction of the staple from the bore. Accordingly, the protrusions can prevent accidental extraction of the staple or extraction of the staple due to vibration or cyclic or pressure spikes when the male and female parts of the fluid coupling bias apart, for example when the fluid coupling is under pressure.
  • the staple is generally U-shaped and the definition "outer region" of the legs means a region that is positioned outwardly of the U and in use of the staple sits outwardly of the groove on the male part.
  • the definition "inner region” of the legs means a region on each leg that is positioned inwardly of the U and in use of the staple sits within the groove.
  • Each of the legs of the staple also have an outer side, being the side of the legs positioned outwardly of the U and an inner side, being the side of the legs positioned inwardly of the U and substantially facing each other.
  • bore is to be understood as including a hole or passage in the female part that may have other than a circular cross section.
  • the protrusions of the legs can overlay an edge or adjacent surface of the corresponding bore through movement of the leg within the bore.
  • the leg is moved within the bore through the insertion of a spacer, pin, clip or other body within the bore to wedge the leg against one of the inner surfaces of the bore.
  • the spacer is sized to be same length as the staple and has two legs at the same position as the protrusions of staple.
  • the spacer is also preferably located further away from the inlet side of the female part than the staple.
  • the addition of the spacer may also be configured to lock the staple within the bores of the female part. This would lock the male part within the female part whether the fluid coupling is under pressure or not.
  • the spacer also preferably provides a visual reference that the male part is locked within the female part, an important safety feature. Without a spacer, the fluid coupling may or may not be locked. Thus, visual audits can be done to confirm the coupling connection is safe.
  • the protrusion could overlay an edge or surface of a bore in the female part once inserted through that bore when the male part and female part are biased apart.
  • one or more of the protrusions on the legs may be configured to engage an edge or surface of the respective bore of the female part when the male part and female part are biased apart.
  • the male and female part of the fluid coupling are generally biased apart when fluid pressure is applied within the coupling. The pressure in the fluid coupling force the male part and female part to move in opposite directions along the longitudinal axis, forcing the staple against a side of the bore closest to the inlet of the female part.
  • the bore of the female part may be sized and/or shaped to allow the leg and protrusion to pass through the bore, and allow the leg of the staple to move therein.
  • the male part and female part are biased apart moving the leg within the bore toward the side of the bore closest to the inlet of the female part. This also moves the protrusion to a location where it overlays an edge or adjacent surface of a bore. Therefore, the staple is locked into placed within the bores when the fluid coupling is under pressure. Any extraction force applied to the staple(s) when the fluid coupling is under pressure will cause the protrusions to engage the edge and adjacent surface of the bore, resisting extraction of the staple. Thus, it is less likely that the staple will be unintentionally removed from the fluid coupling whilst it is under pressure.
  • the protrusions on the legs of the staple are preferably located on the leg of the staple in a position that facilitates insertion of the staple within the bores of the female part and facilitates seating of the inner part of the legs of the staple within the groove of the male part.
  • the protrusion is preferably located on the legs of the staple in a position that clears the male part when the legs are inserted through that bore.
  • the protrusion can be located on the legs of the staple in a position that avoids the groove when the legs are inserted through that bore.
  • the protrusions are therefore preferably located on an outer region of the legs, and more on or proximate the outer side of the legs.
  • the legs of the staple generally have a front face which faces towards the inlet end of the female part when the legs of the staple are inserted within the bores of the female part.
  • the protrusions are located on or proximate the outer side of the legs. This orientation allows the protrusions to overlay an edge or adjacent surface of a bore as the protrusions are forced towards the inlet of the female part when the staple abuts against the front wall of the respective bore, when the male part and female part are biased apart.
  • the cross section of the legs may have a flat portion on an outer region of the legs designed to bear against a front surface of the bore closest to the inlet end of the female part when the male and female parts are biased apart. This flat section may be provided on any cross sectional leg shape. However, it is preferred for the legs have a polygon shaped cross section such as (but not limited to) triangular, square, rectangular, octagonal, hexagonal or the like cross-sections.
  • the protrusion should extend outward of the surface of the staple in order to overlay the edge or surface proximate the edge of the bore.
  • the protrusions extend proud of the outer side of the legs.
  • the protrusion can be formed from any projection, flange, bump, lump, outcrop, ledge, lug, nodule, rib, lip or similar formation attached to or extending from the ledge.
  • the protrusion can be separately attached to the leg by a fixing process such as welding, adhesive, fasteners or the like or may be integrally formed with the leg such as by stamping, moulding, casting or the like.
  • the protrusions are pressed out from the material of the legs of the staple. Where the staple is formed from a metal, the protrusion can be cold pressed out from the material of the legs of the staple.
  • the cold pressed portion can be a nodule, lump, bump, flange or similar pressed shape.
  • the cross section of the legs may have a shaped portion on an inner region of the legs, opposite to the outer region of the legs that the female part bears against that facilitates the seating of the legs within the groove.
  • This shaped portion allows the staple to be inserted and removed from the fluid coupling more easily.
  • the sides of the groove of the male part are typically flat. It can therefore be preferable for the inner region of the legs to have complementary flat sides. Having flat sides substantially matching the flat sides of the groove also allows maximisation of the cross section of the legs and therefore the strength of the staple.
  • the legs of a staple inserted in a fluid coupling can change shape over time due to the pressure and pressure fluctuations experienced. If the staple is then removed from the coupling and reinserted in a different orientation, it is more likely that the staple will fail when subject to pressure. Therefore, in some embodiments the legs of the staple can have a larger cross-section than conventional staples to provide greater mechanical strength. In some forms, the legs of the staple have a width that is at least 1.2 times greater than the depth of the legs. However, better mechanical properties would be provided with a width that is at least 1.5 times greater, and more preferably 2 times greater than the depth of the legs.
  • the legs may be parallel to each other, inclined together or partly parallel and partly inclined together.
  • Having parallel legs provides the advantage that the legs are not biased away from the groove (as occurs in many known staples that have flared legs) and are therefore not as likely to be unintentionally removed from the fluid coupling when it is under pressure.
  • Another advantage of a staple with parallel legs is that the staple may be more easily inserted into the fluid coupling as the legs do not need to be squeezed together during insertion. Inclined together or partly inclined together legs may assist in holding the legs within the fluid coupling when it is not under pressure. When the fluid coupling is under pressure, such legs may make it more difficult for the staple to be unintentionally removed from the fluid coupling.
  • the staple may have a bent portion connecting the two legs.
  • the bent portion may lie on an angle to the legs, for example an angle of substantially 90 degrees to the legs.
  • the angled configuration of the bent portion can be used to insert the staple in the correct orientation, for example where the protrusion is required to be facing in a particular orientation relative to the inlet of the female coupling. Staples are often inserted into fluid couplings in harsh environments, such as in underground mines, where factors such as poor lighting and coal dust may make it difficult to see the cross section of the legs clearly.
  • the staple may also be handled through gloves, making it difficult to feel the protrusions.
  • the bent portion provides a visual and tactile indication of the orientation in which the staple should be inserted.
  • the bent portion can also provide an area of the staple which may be labelled, for example by attaching a separate label or engraving information on the staple. It is a particularly advantageous position to place a label as it is an easily visible, low stress area of the staple that does not affect the functionality of the staple. Such labelling may be applied in order to differentiate between different sizes and types of staple, to indicate the date of manufacture, maximum working pressure or to provide other information. In some states, Government regulations or guidelines may require staples to be labelled.
  • At least one of the legs may have a recess that seat within the groove on the male part when the male and female parts are engaged and the staple is fully inserted.
  • the recess allows the legs to grip around the groove on the male part, further impeding the unintentional removal of the staple whilst the fluid coupling is under pressure and preventing the staple from falling out under nil pressure. It is desirable to restrict the insertion direction of the staple to an orientation that ensures that the protrusions are required to be facing the inlet end of the female part. This can be achieved by configuring the staple with a protrusion on each of the front side and rear side of the legs of the staple.
  • this can be achieved by placing a mechanical restriction to physically indicate that the staple with the single lug is inserted in a desired orientation relative to the inlet of the female part.
  • a mechanical restriction is provided by a locking pin which is used in conjunction with the single lug staple to indicate the orientation of the pin.
  • the locking pin may comprise any body that can be inserted in the bore of the female part which had a different configuration when the protrusions of the pin is facing the inlet end of the female part or facing away from the inlet end of the female part.
  • the locking pin comprises a U-shaped pin having legs that are inserted adjacent the legs of the staple in the bores of the female part.
  • the U- shaped pin is preferably substantially the same shape as the staple and the legs are sized to engage the protrusions if placed adjacent the protrusions in the bores.
  • the pin is typically inserted adjacent the staple between the rear of the staple and the face of the bore furthest away from the inlet end of the female part. If the staple is inserted incorrectly, the legs of the locking pin will hit the protrusions on the staple and the top of the locking pin with stand above the top of the staple. When assembled correctly, the top of the staple and the top of the locking pin are flush. It is preferred for removal of the staple to be impeded by the presence of the locking pin so that the staple cannot be removed without removing the locking pin first.
  • At least one of the legs of the pin may have a recess which seats within the groove on the male part when the male and female parts are engaged and the staple is fully inserted.
  • the recess allows the legs of the pin to grip around the groove on the male part, impeding the unintentional removal of the pin.
  • the pin may be sized to tightly fit between the rear face of the bore and the staple to force the leg toward the side of the bore closest to the inlet of the female part and move the protrusion to a location where it overlays an edge or adjacent surface of a bore.
  • the staple legs may have square ends, ramped end, chamfered ends or similar. Ramped and chamfered ends allow for ease of insertion and removal of the staple from the fluid coupling.
  • the side of the leg facing the female part, the side of the leg facing the male part or both sides of the leg could be chamfered.
  • the length of the legs may be varied to suit different sized female parts of the fluid coupling.
  • a fluid coupling including:
  • a female part having a longitudinal axis, an inlet end for axially receiving an inlet end of the male part and two bores positioned to align with the groove on the male part when the male part is engaged with the female part;
  • the two legs of the staple being inserted into the two bores on the female part to seat within the groove on the male part when the male part and female part are engaged.
  • Each of the bores of the female part may include a front surface closest to the inlet end of the female part having a flat face onto which a cooperating surface of the legs of the staple can abut.
  • the staple When the male part and female part are biased apart, the staple abuts against the front wall of the respective bore. This allows the protrusions to overlays an edge or adjacent surface of a bore, preventing accidental extraction of the staple.
  • the bores preferably have a cross-section sized to receive at least the respective leg of the staple and protrusion. This allows the leg and its protrusion to be easily inserted into and through the bore.
  • the cross-section of bore may also be sized to allow longitudinal movement of the staple and male part about the longitudinal axis of the female part. As explained above, this longitudinal movement allows the staple to abut against the front wall of the respective bore and enables the protrusions to overlays an edge or adjacent surface of a bore.
  • the bore can have any suitable cross-sectional area that can receive the staples.
  • the bores have a non-circular cross-section.
  • each of the bores has a polygon shaped cross-section, such as such as (but not limited to) triangular, square, rectangular, octagonal, hexagonal or the like cross-sections.
  • the staple, female part and male part according to the present invention and related fluid coupling can be used in high pressure, and low pressure applications.
  • the materials for the constituent parts and fluid coupling can be selected to meet the required pressure and mechanical specification for a required application.
  • some or all of the parts of the staple, female part and male part could comprise a plastic material.
  • the parts of the staple, female part and male part could be selected from metals, ceramics or the like.
  • Figure 1 is an exploded view of a fluid coupling according to an embodiment of the invention that includes a staple, a male plug and female nut.
  • Figure 2 is a perspective view of the fluid coupling shown in Figure 1 with the staple, male plug and female nut interconnected.
  • Figure 3 is a base perspective view of the fluid coupling shown in Figure 1 with the staple, male plug and female nut interconnected with no pressure applied within the fluid coupling.
  • Figure 4 is an axial cross section of a fluid coupling shown in Figure 3.
  • Figure 5 is a base perspective view of the fluid coupling shown in Figure 1 with the staple, male plug and female nut interconnected with pressure applied within the fluid coupling.
  • Figure 6 is an axial cross section of a fluid coupling shown in Figure 5.
  • Figure 7 is a perspective view of an alternative form of a staple according to the present invention.
  • Figure 8 is a perspective view of a staple and locking pin according to another embodiment of the present invention.
  • Figure 9 is a perspective view of the fluid coupling shown in Figure 1 with the staple, male plug and female nut interconnected with pressure applied within the fluid coupling and a locking ring as shown in Figure 8, the locking ring and staple being orientated in the correct position.
  • Figure 10 is a perspective view of the fluid coupling shown in Figure 1 with the staple, male plug and female nut interconnected with pressure applied within the fluid coupling and a locking ring as shown in Figure 8, the locking ring and staple being orientated in an incorrect position.
  • Figures 1 to 6, 9 and 10 shows a male plug and female nut, however, this depiction is for illustrative purposes only and it will be appreciated that the male plug and female nut could be replaced with the male part and female part of other similar fluid couplings.
  • the following description refers to the male plug and female nut as the male part 22 and female part 32 of a fluid coupling 20 and it is assumed that hoses and/or adapters are connected to the fluid coupling 20.
  • Figures 1 and 2 show a fluid coupling 20 that includes a substantially cylindrical male part 22, a substantially cylindrical female part 32 and a staple 36.
  • the male part 22 has an external annular groove 24 that has a base 26 and two flat sides 28 and 30 that are normal to the base 26.
  • the female part 32 has two bores 34 having a primarily rectangular cross section, a longitudinal axis X-X, an inlet end 25 for axially receiving an inlet end 27 of the male part 22.
  • the bores 34 are positioned to align with the groove 24 when the male part 22 and female part 32 are engaged (as shown in Figure 2).
  • a fluid conduit 29A runs axially through the male 22 and female 32 part through which fluid can pass.
  • the generally U-shaped staple 36 has legs 38 that are inserted into the two bores 34 and seated within the groove 24.
  • the legs 38 enter and exit the bores 34 via entry portion and exit portion 40. Entry portion and exit portion 40 extend from the exterior of the female part 32 to the interior of the female part 32.
  • the male part 22 and female part 32 bias apart in opposite directions along the longitudinal axis X-X, in the directions shown by arrows A and B in Figure 2, when pressure is applied within the fluid coupling 20. As represented in Figure 2, the male part 22 is biased to the left and the female part 32 is biased to the right.
  • each of the distal ends 42 of the legs 38 has a protrusion 44.
  • the protrusions 44 are configured to overlay an outer edge 46 of the respective bore 34 of the female part 32 when the male part 22 and female part 32 are biased apart. If an extraction force is applied to the staple 36, the protrusions 44 will engage the outer edge 46, preventing the staple 36 from being extracted from the bores 34 of the female part 32.
  • the protrusions 44 are located on an outer region of the legs 38 proximate the outer side 48 of the legs 38 in a position that clears the male part 22 and avoids the groove 26 when the legs 38 are inserted through that bore 34.
  • the protrusions 44 are also located on the front face 49 which faces towards the inlet end 25 of the female part 32 when the legs 38 of the staple 36 are inserted within the bores 34 of the female part 32. This orientation ensures the protrusions 44 overlay the outer edge 46 of a bore 34 when the protrusions 44 are forced towards the inlet 25 of the female part 32 when the male part 22 and female part 32 are biased apart.
  • the protrusions 44 of the legs 38 must be visually orientated by a user to be inserted in the correct orientation facing the inlet end 25 of the female part 32.
  • the staple 36A can be provided with protrusions 44 on each of the front side and rear side of the legs 38 of the staple 36. A user therefore does not need to worry about correctly orientating the protrusions 44 when inserting the staple 36A into the bores 34 of the female part 32.
  • legs 38 have a rectangular cross-section providing a flat face 39 which can abut against an adjacent front flat face 41 of the bore 34 when the male 22 and female 32 parts are biased apart.
  • the legs 38 of the staple 36 are designed with a larger cross-section than existing staples to provide greater mechanical strength.
  • the legs 38 of the illustrated embodiment have a width that is 1.4 times greater than the depth of the legs 38 to provide greater mechanical strength. However, it is thought that better mechanical properties could be provided with a width that is at least 1.2 times greater.
  • the illustrated legs 38 of the staple 36 are parallel to each other. However, it is envisaged that other embodiments of the staple 36 may include legs 38 that are inclined together or partly inclined together legs to assist in holding the legs 38 within the fluid coupling 20 when it is not under pressure.
  • the illustrated bores 34 have a square cross-section.
  • the bores 34 of the female part 32 are sized to allow the leg 38 and protrusion 44 to pass through the bore 34, and allow the leg 38 of the staple 36 to move in a longitudinal direction about the longitudinal axis X-X when received in that bore 34.
  • Each of the bores 34 of the female part 32 have a flat front surface 41 closest to the inlet end 25 of the female part 32 which a cooperating flat surface 39 of the legs 38 of the staple 36 can abut.
  • FIGS 3 to 6 illustrate the movement of the staple 36 within the bores 34 of the female part 32 when pressure is applied to the fluid coupling 20.
  • Figures 3 and 4 illustrate the fluid coupling 20 when no pressure is applied.
  • the male part 22 and female part 32 are connected loosely together with the legs 38 of the staple 36 generally centred within the bore 34.
  • the bores 34 of the female part 32 are sized to allow the leg 38 of the staple 36 to move in a longitudinal direction about the longitudinal axis X-X when received in that bore 34.
  • Figures 5 and 6 show the staple 36 interlocking the fluid coupling 20 under pressure.
  • the male part 22 is being biased to the left and the female part 32 is being biased to the right as shown by arrows A and B.
  • the male part 22 and female part 32 are biased apart when the fluid coupling 20 is under pressure, the front side 39 of the legs 38 of the staple 36 are forced against the front wall 41 of the bore 34.
  • the corresponding flat shapes of the front wall 41 of the bore 34 and the front side 39 of the leg 38 of the staple 36 distribute the force across the abutting faces 39, 41. This movement also moves the protrusion 44 to overlay the edge 46 and adjacent surface of the bore 34 (best shown in Figure 5).
  • the staple 36 is locked into placed within the bores 34 when the fluid coupling 20 is under pressure. Overlay of the protrusions 44 with the edge 46 and adjacent surface of the bore 34 will resist extraction of the staple 36. Any extraction force applied to the staple(s) 36 when the fluid coupling 20 is under pressure will cause the protrusions 44 to engage the edge and/or adjacent surface 46 of the bore 34 (as shown in Figure 5), resisting extraction of the staple 36 from the female part 32. This means that it is less likely that the staple 36 will be unintentionally removed from the fluid coupling 20 whilst it is under pressure.
  • the staple 36 may be made from steel, such as spring steel or non-corroding steel, such as stainless steel, and could be formed by extrusion and shaping.
  • Figures 8 to 10 show use of a locking pin 70 in the fluid coupling 20 to restrict the insertion direction of the staple 36 to an orientation that ensures that the protrusions 44 are required to be facing the inlet end 25 of the female part 32.
  • the illustrated locking pin 70 comprises a U shaped pin that is substantially the same shape as the illustrated staple 36.
  • the locking pin 70 includes two legs 72 that are inserted adjacent the legs 38 of the staple 36 in the bores 34 of the female part 32.
  • the legs 72 are sized to engage the protrusions 44 of the staple 36 if placed adjacent the protrusions 44 in the bores 34. Removal of the staple 36 is impeded by the presence of the locking pin 70 so that the staple 36 cannot be removed without removing the locking pin 70 first.
  • the locking pin 70 is inserted adjacent the staple 36 between the rear face 77 of the staple 36 and the rear face 78 (the face of the bore 44 furthest away from the inlet end 25 of the female part 32).
  • Each of the legs 72 of the pin 70 are bent to form a recess 74 that seats within the groove 26 on the male part 22 when the male 22 and female 32 parts are engaged and the staple 44 is fully inserted.
  • the recess 74 allows the legs 72 of the locking pin 70 to grip around the collar 31 on the male part 22, impeding the unintentional removal of the locking pin 70.
  • the locking pin 70 acts as a spacer within the bore.
  • the locking pin 70 is sized to tightly fit between the rear face 78 of the bore 34 and the staple 36 to force the leg 38 of the staple 36 toward the front side 41 of the bore 34. This moves the protrusion 44 to a location where it overlays an edge or adjacent surface of a bore 46.
  • the addition of the locking pin 70 locks the staple 36 within the bores 34, locking the male part 22 within the female part 32 whether the fluid coupling 20 is under pressure or not.
  • the locking pin 70 also preferably provides a visual reference that the male part 22 is locked within the female part 32, an important safety feature. Without a locking pin 70, the fluid coupling 20 may or may not be locked. Thus, visual audits can be done to confirm the fluid coupling 20 connection is safe.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

La présente invention se rapporte à un crampon (36) destiné à emboîter l’une dans l’autre une pièce mâle pouvant être mise en prise (22) et une pièce femelle (32) d’un dispositif d’accouplement hydraulique (20), la pièce mâle (22) comportant une rainure annulaire externe (24) et la pièce femelle (32) ayant un axe longitudinal X, une extrémité d’entrée (25) destinée à recevoir axialement une extrémité d’entrée (27) de la pièce mâle (22), et deux trous (34) positionnés pour s’aligner avec la rainure (24) située sur la pièce mâle (22) lorsque la pièce mâle (22) vient en prise avec la pièce femelle (32). Le crampon (36) comporte deux pattes (38) qui peuvent être introduites dans les deux trous (34) situés sur la pièce femelle (32) pour se loger dans la rainure (24) située sur la pièce mâle (22) lorsque la pièce mâle (22) et la pièce femelle (32) sont en prise. Chacune des pattes (36) comporte une extrémité proximale (45) se trouvant à proximité d’un raccordement entre les pattes et une extrémité distale (42). Au moins une des pattes (36) comporte au moins une saillie (44) située sur l’extrémité distale (42) de cette patte (36) ou à proximité de cette extrémité, la saillie (44) se trouvant dans un positionnement qui lui permet de recouvrir un bord ou une surface adjacente d’un trou (34) situé dans la pièce femelle (32) une fois que la patte (36) et la saillie (44) sont introduites dans ce trou (34). Figure 2
PCT/AU2010/000904 2009-07-20 2010-07-16 Crampon pour dispositif d’accouplement hydraulique WO2011009158A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2009903407A AU2009903407A0 (en) 2009-07-20 A staple for a fluid coupling
AU2009903407 2009-07-20

Publications (1)

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WO2011009158A1 true WO2011009158A1 (fr) 2011-01-27

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4244608A (en) * 1979-03-05 1981-01-13 The Gates Rubber Company Female coupling with staple lock
US4923350A (en) * 1987-08-04 1990-05-08 Hinksman Patrick B Laminated locking staple
US6634679B1 (en) * 2002-04-17 2003-10-21 Itt Manufacturing Enterprises, Inc. Fluid quick connector with retention clip for flangeless endforms
JP2007255669A (ja) * 2006-03-24 2007-10-04 Tokai Rubber Ind Ltd クイックコネクタ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4244608A (en) * 1979-03-05 1981-01-13 The Gates Rubber Company Female coupling with staple lock
US4923350A (en) * 1987-08-04 1990-05-08 Hinksman Patrick B Laminated locking staple
US6634679B1 (en) * 2002-04-17 2003-10-21 Itt Manufacturing Enterprises, Inc. Fluid quick connector with retention clip for flangeless endforms
JP2007255669A (ja) * 2006-03-24 2007-10-04 Tokai Rubber Ind Ltd クイックコネクタ

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