NL2013750B1 - Retainer system for securing a pin, a pin adapted to said retainer system, and an article suitable for use of said pin and retainer system. - Google Patents

Retainer system for securing a pin, a pin adapted to said retainer system, and an article suitable for use of said pin and retainer system. Download PDF

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Publication number
NL2013750B1
NL2013750B1 NL2013750A NL2013750A NL2013750B1 NL 2013750 B1 NL2013750 B1 NL 2013750B1 NL 2013750 A NL2013750 A NL 2013750A NL 2013750 A NL2013750 A NL 2013750A NL 2013750 B1 NL2013750 B1 NL 2013750B1
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NL
Netherlands
Prior art keywords
pin
locking system
hole
locking
end part
Prior art date
Application number
NL2013750A
Other languages
Dutch (nl)
Inventor
Dannhauser Zaayman Oswald
Kriel Louw
Original Assignee
Southwest Eng B V
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Publication date
Application filed by Southwest Eng B V filed Critical Southwest Eng B V
Priority to NL2013750A priority Critical patent/NL2013750B1/en
Application granted granted Critical
Publication of NL2013750B1 publication Critical patent/NL2013750B1/en

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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
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G15/00—Chain couplings, Shackles; Chain joints; Chain links; Chain bushes
    • F16G15/04—Quickly-detachable chain couplings; Shackles chain links with rapid junction means are classified according to the corresponding kind of chain
    • F16G15/06—Shackles designed for attachment by joint pins to chain elements, e.g. D-shackles so called harp links; the D-chain links are classified according to the corresponding kind of chain
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/10—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts
    • F16B21/16—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with grooves or notches in the pin or shaft

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)

Abstract

A retainer system for securing a pin in an operabie position within an artiele provided with a mating primary through-hole in which the pin is inserted and with a secondary through-hole transverse to the primary through-hole in which the retainer system is inserted, wherein the pin is provided at one end with a retainer cavity in which the retainer system is positioned for securing the pin, the retainer system having a rod-shaped body with a first and second end and a main axis, wherein: the first end is provided with a protruding structure for an abutting contact with a first entrance of the secondary through-hole, and the second end camprises an assembly of an integral end partand a locking end part aligned in the main axis of the pin, wherein the locking end part camprises a locking body comprising a protruding structure for an abutting contact with a secondentrance of the secondary through-hole, wherein the locking body is movable with respect to the integral end part by virtue of a screwing engagement over a trajectory between: - a secured position for retaining the pin, and - a released position for disassembling the locking end part from the integral end part.

Description

Retainer system for securing a pin, a pin adapted to said retainer system, and an article suitable for use of said pin and retainer system
The present invention relates to a retainer system for securing a pin in an operable position within an article.
The invention finds a particular application in retainer systems for load bearing pins in components such as pins used in dragline buckets and rigging, face shovel and back hoe buckets, etc. These pins are usually subject to wear and have to be replaced often requiring an easy and simple way of removal. The concept of a mechanical retaining system involves the use of mechanical devices which excludes welding or similar operations for retaining the pins in the components. A mechanical device in this sense is a device usually consisting of moving parts which will have a locked and unlocked configuration. In the global mining industry there is a universal safety requirement which necessitates the absence of hammering for retaining or removing these pins, due to numerous accident occurring during hammering operations.
The article is primarily a mechanical connector that links parts of heavy-duty equipment commonly used in earthmoving and mining equipment. The article may for instance be a shackle which is closed off by the pin, or a connector comprising two leg parts that are joined by the pin which may function as a hinging joint. The article provided with the pin and the retainer system is designed to withstand heavy loads and vibrations to which it is subjected during use.
The article, pin and retainer system in the context of the following description may therefore be referred to more specifically as a heavy-duty article, heavy-duty pin and heavy-duty retainer system. A retainer system for securing a pin in an article, is described in prior art documents US4337614 and US8104988.
In US4337614, a heavy-duty shackle is described having a pin as a closing member which is secured by a plate having the form of a ring. The plate in itself can be rotated over the end of the pin into a removable and non-removable position. In the nonremovable position, the plate interlocks with the end of the pin. The non-removable position of the plate is fixed by driving a locking lug through a hole in the plate, so that the locking lug extends at the back side of the plate into a cavity provided in the article next to the pin opening of the article. The cavity extends beyond the circumference of the fixed plate, thus forming a tapered passage. The tapered passage allows for the removal of the locking lug once it is necessary to remove the pin from the article. The locking lug is removed either by driving the lug completely forwards through the plate hole, or by inserting in the tapered passage a wedge type of tool which drives the lug backwards outside the plate hole.
This retainer system of US614 is thus based on separable lugs that have to be removed by applying substantial force in a cumbersome way. Furthermore, it requires that the article is provided with a passage way through which wedging equipment is possibly forced into. This makes the design and production of the article itself more intricate. In regard of both aspects, it is desired to develop a retainer system which does not entail these disadvantages.
In US8104988, a heavy duty shackle is described having a pin as a closing member which is secured by two retainers that interlock with mating grooves provided on both pin ends when the pin is inserted in operable position in the shackle. The retainer is of a general U-shape which comprises two leg parts that interlock with the pin end in order to secure the pin in the article. The retainer can be fixed in a securing position by a latch that can be actuated between an engaged position and a disengaged position with respect to a mating latching shoulder in the article.
This retainer system of US988 is thus based on retainers of a relatively intricate design. The article should be provided with a mating latch shoulder which further complicates the design and production of the article. In both aspects, it is desired to develop a retainer system which does not entail these disadvantages.
It is an objective of the invention to provide an improved type of retainer system that takes away in part or completely one or more of the above indicated disadvantages related to retainer systems that are known from the prior art.
In order to meet the above objective, the invention according to a first aspect thereof, provides: a retainer system for securing a pin in an operable position within an article provided with a mating primary through-hole in which the pin is inserted and with a secondary through-hole transverse to the primary through-hole in which the retainer system is inserted, wherein the pin is provided at one end with a retainer cavity in which the retainer system is positioned for securing the pin, the retainer system having a rod-shaped body with a first and second end and a main axis, wherein: the first end is provided with a protruding structure for an abutting contact with a first entrance of the secondary through-hole, and the second end comprises an assembly of an integral end part and a locking end part aligned in the main axis of the pin, wherein the locking end part comprises a locking body comprising a protruding structure for an abutting contact with a second entrance of the secondary through-hole, wherein the locking body is movable with respect to the integral end part by virtue of a screwing engagement over a trajectory between: - a secured position for retaining the pin, and - a released position for disassembling the locking end part from the integral end part.
For the sake of completeness, some specific terms as used for describing the invention as claimed are explained here after: pin in operable position: pin in a position in the article so that the article can be applied for its intended use; transverse to: under an angle between 80 to 100 degrees, preferred between 85 and 95 degrees; entrance: may also be referred to as entry side; a protruding structure from the rod-shaped body of the retainer system implies that at least in one direction its width in cross section is larger than the width of the rod-shaped body;
In the context of the invention, the engagement of the integral end part and the locking end part the invention, may also be based on a coupling means different from a screwing engagement, as long as the engagement of these coupling means permits an axial movement of the locking end part with respect to the integral end part.
The retainer system according to the invention is thus a relatively simple device in contrast to the system known from US988, which furthermore is easily deployed from a secured into a released status in contrast with the system known from US614. Furthermore the retainer system allows for a less complicated design of the article in which the retainer system is to be inserted.
Apart from these advantages, the retainer system according to the invention achieves a low risk of dust particles creeping into gaps and cavities between the article in which a pin with such retainer system is applied. As a result, the chances of the retainer system getting stuck in the pin and/or article during use of the article, are relatively low. When the retainer system is used in combination with a pin according to the invention - which will be discussed in more detail below - a further advantage is obtained in that the retainer system can be easily removed when it has accidentally got stuck in the article.
Furthermore, the retainer system according to the invention achieves a securing of the pin, based on a screwing engagement between the integral end part and the locking end part. During use of the article, the risk that heavy vibrations and forces will be effective to move the locking body into a released position, is relatively low because a specific unscrewing movement is necessary.
It is a preferred embodiment of the retainer system according to the invention, that the integral end part comprises an engagement room at the end of the integral end part which is limited by a wall structure of the integral end part, and an axially positioned bore tapped with screw thread at the bottom side of the engagement room, the locking body is vertically movable within the wall structure of the integral end part, the locking body further an axially oriented bolt with screw thread at the lower end of the body, the integral end part and the locking end part are assembled by a screwing engagement of the bolt with the bore.
Such a construction of the screwing engagement is capable of providing a screwing engagement in a practical and robust manner.
Preferably, the outer contour of the locking body closely fits within the inner side of the wall structure. As such the wall structure directs the locking body during movement over the trajectory.
It is especially preferred in the retainer system according to the invention, that in a part of the trajectory between the secured position and the released position of the locking body, the locking body and the wall structure are in mutual contact resulting in an elastic deformation of the outer surface of the locking body, and/or the inner surface of the wall structure.
In this way, the retainer system according to the invention achieves an enhanced securing of the pin, because in order to bring the locking body from a secured position into a released position, an additional force is required to overcome the shearing forces that occur during the elastic deformation of the mutual contacting surfaces.
In the context of this description, ‘elastic deformation’ means a reversible deformation, wherein in the absence of said mutual contact, the deformed structure adopts its original form.
It is further preferred in the retainer system according to the invention, that a locking relief structure is provided on the respective outer surface of the locking body at a fixed axially height, and a wall relief structure is provided on the inner surface of the wall structure at a fixed axially height, wherein each relief structure is dimensioned such that: in the secured position of the locking body the wall relief structure is above the locking relief structure and the wall relief structure encloses the locking relief structure without mutual contact, and - in a part of the trajectory between the secured position and the released position of the locking body, the locking relief structure and the wall relief structure are in mutual contact resulting in an elastic deformation of the two respective relief structures.
The following terms are further explained in the context of the invention as claimed: above: higher in axial direction towards the top of the locking end part; released position: a position when the locking relief structure is above the wall relief structure, without mutual contact and elastic deformation between the two respective relief structures; secured position: a position without mutual contact and elastic deformation between the two respective relief structures; the elastic deformation of the relief structures is primarily an elastic compression of the structures, so that the relief structures are able to pass each other in rubbing contact which creates a mutual shear force; the wall and locking relief structures are dimensioned in such a way that the relief structures contribute - in transversal direction to the main axis of the retainer system - an additional thickness to the wall structure and the locking body that is in total larger in magnitude than the maximum gap possible between the wall structure and the locking body closely fitted inside the wall structure.
In this way, the retainer system according to the invention achieves a further enhanced securing of the pin, because the secured position of the locking body is latched by the wall relief structure that enclose the locking relief structure. During use of the article heavy vibrations and forces will not be effective in moving the locking body into a released position, because a specific unscrewing movement is necessary that requires an additional force sufficient to establish a passage of the respective relief structures over each other while being elastically deformed. As in secured position the mutual relief structures are not in mutual contact, the chances are further minimized that vibrations may unlock the secured position.
It is also preferred in the retainer system according to the invention, that a sealing material is provided between the locking body and the engagement room.
As such, the integral end part and the locking end part of the retainer system are less prone to getting stuck into each other by the entry of dust particles from the environment into intermediate gaps during use.
The sealing material is for instance provided on the inner surface of the wall structure, and/or on the outer surface of the locking body.
The sealing material may be an O-ring, a grease layer or a combination of both. Preferably, the sealing material is present above the wall relief structure and above the locking relief structure, when both are present in the retainer system. A further preferred embodiment of the invention, relates to a retainer system wherein the wall relief structure and/or locking relief structure protrudes from the adjacent surface in the shape of a cam, web or bulge.
These type of shapes provide for a gradual mutual contact between the two opposed relief structures, so that during passage over each other the force needed gradually raises to a maximum and subsequently gradually lowers to zero.
Consequently, an elastic deformation of the relief structures is encountered which is optimum for the intended effect of the retainer system.
Preferably, the locking relief structure as a whole is provided on the major part of the outer surface of the locking body, and/or the wall relief structure is provided on the major part of the inner surface of the wall structure. As such, the relief structures provide an optimal interacting surface for providing the shear forces that occur during passage of the mutual relief structures over each other.
The relief structure may be of a continuous elongate structure such as a rib or ridge.
Preferably, the retainer system according to the invention is substantially cylindrical. Such a design is simple and allows easy insertion and placement of the retainer system in the mating article and pin.
More preferably, in the retainer system according to the invention, at least one end of the retainer system has a protruding structure of a contour that is non-circular in cross-section and which is designed to fit in abutting contact with a mating contour of at least one entry side of the secondary through-hole.
As such, the retainer system when fit inside the secondary through-hole, is prevented from rotating freely when in secured status.
For instance has the contour of the protruding structure a cross-sectional circumference which includes cornered parts such as a hexagon, a rectangle or a square.
Optionally, such a contour is provided on both ends of the retainer system, while a mating contour is provided on both entry sides of the secondary through-hole.
In a special embodiment of the retainer system according to the invention, the wall structure of the integral end part is provided with one or more wall slots, and the protruding structure of the locking body is dimensioned to slide vertically within said wall slots.
As such, the wall slots of the integral end part interact with the protruding structure of the locking end part, such that the locking body is guided along a predetermined orientation, which is advantageous in the assembling of the two parts and in the movement between secured and released position of the locking body.
In a further embodiment of the retainer system according to the invention, the locking body is movable into a secured position wherein the protruding structure of the locking end part abuts the bottom end of the wall slots.
Such an abutting contact results in a secured position of the locking body which is further fixed by the tension at the abutting contact by screwing of the bolt into the bore. In such an embodiment having a further fixed secured position, it is not necessary to base such a further fixation on a mutual contact between the outer surface of the locking body and the inner surface of the wall structure, which is an advantage as indicated above.
According to another preferred embodiment, the invention relates to a retainer system wherein the outer contour of the locking body is substantially of a cylindrical shape.
Consequently, it is preferred that also the wall structure of engagement room is of a cylindrical shape. Such mating cylindrical forms allow for an assembling and movement of the locking end part, which is straightforward. Furthermore, the cylindrical shape is suitable to minimize the ingress of dust particles, especially in combination with a sealing material between the locking body and the engagement room as discussed above.
It is preferred in the retainer system according to the invention, that the bolt is provided within the locking body as a component which is rotatable independently of the locking body, the bolt comprising a positioning structure above the screw thread, which is enclosed within an internal cavity in the locking body, wherein the positioning structure is capable of exerting a force in axial direction on the locking body during the movement of the locking body.
Accordingly, the locking body is movable in a vertical way without rotating.
The positioning structure consequently exerts sufficient force onto the locking body in order to overcome any shear forces at the interface between the locking body and the wall structure of the engagement room.
In a further preferred embodiment of the retainer system according to the invention, the positioning structure is a flange protruding from the bolt radially, and the internal cavity of locking body comprises a bottom and roof.
Preferably a retainer system according to the invention, comprises a sealing material which is provided between adjacent surfaces of the bolt and the locking body, which is preferably present above the internal cavity of the locking body.
Such a sealing material avoids the ingress of any dust material between the two adjacent surfaces, and thus secures a proper functioning of the bolt within the locking body.
It is further preferred in the retainer system according to the invention, that the locking body is provided as an assembly of two halves in cross section in axial direction through the internal cavity.
Such a structure is most practical to build, and also to disassemble when necessary.
With a special preference in the retainer system according to the invention, the screw thread for the bolt and the bore are trapezoidal. A trapezoidal screw thread is most suitable for transforming a screwing force with a rotational component into a translational force in a vertical direction as is required to overcome any shear forces at the interface between the locking body and the wall structure of the engagement room.
Especially preferred in the retainer system according to the invention, is that the top part of the bolt is provided with a contour for engagement with a tool.
Such a top part thus provides a practical feature in order to rotate the bolt with force as required. The contour preferably has a cornered circumference in cross-section, such as a hexagon, rectangle or square.
Advantageously, the top part of the locking body is present in a recess on top of the locking body, so that the top part is present within the outer contours of the locking body.
According to a second aspect, the invention relates to a pin that is securable by a retainer system in an operable position within an article, said article being provided with a mating primary through-hole in which the pin is inserted and with a secondary through-hole transverse to the primary through-hole and in which the retainer system is inserted, wherein the pin has a main axis and is provided at a first end with a retainer cavity in which a retainer system according to one of the preceding claims can be inserted, wherein the retainer cavity is substantially elongate and transverse to the main axis direction of the pin, the retainer cavity spanning from one side of the first pin end to the other, opposed side of the first pin end.
When the retainer cavity of a pin according to the second aspect invention, is suitable to be aligned with the secondary through-hole when the pin is positioned in the operable position in the article, a retainer system according to the first aspect of the invention can be inserted in the secondary through-hole and positioned in the retainer cavity for securing the pin. Accordingly, all the above stated advantages in relation to the retainer system are achieved by using this type of pin. The retainer cavity may for instance be a slot or a through-hole.
Preferably, in the pin according to the invention, the retainer cavity is a slot with its open side directed towards the top end of the pin, which open side is partially bridged over by a roof structure connecting both opposed side walls of the slot.
The slot may be of any shape, and is preferably a U-shape in cross-section. The roof structure may bridge over the middle part of the slot length, and preferably over a maximum length of one third of the total slot length. The roof structure is advantageously an integral part of the pin, and is made of the same material as the pin.
The bridging roof structure adds two important advantages to the pin: i) the relatively heavy-weight pin can be transported easily by hoisting using a sling that loops through the part of the slot provided with the roof structure (which part is effectively a through-hole). ii) the open parts of the slot outside the roof structure, are accessible for a user when force and possibly cutting equipment is needed to remove the pin from the article in case it has gotten stuck and cannot be removed in a normal way.
With further preference, in the pin according to the invention, one end of the pin, preferably the first end of the pin provided with the retainer cavity, has a contour that is larger than the contour of the main body of the pin between its two ends, which enlarged contour is suitable for creating an abutting contact with a mating first entry side of the primary through-hole of the article.
Such an enlarged end of the pin, also referred to as a pin head, allows for an automatic positioning when the pin is inserted in the mating first entry side. Advantageously, the retainer cavity is provided at the same end as the pin head, because the enlarged dimensions of the pin head allow for a larger retainer cavity and consequently also more room for direct access to the pin retainer when it is in secured mode within the retainer cavity.
The pin according to the invention, preferably has a main body of substantially cylindrical shape between its two ends. A cylindrical shape allows for more easy handling and inserting of the pin into the article.
With further preference, the enlarged contour of the one end of the pin is noncircular in cross-section, so that no rotation of the pin possible when in operable position.
According to a third aspect, the invention relates to an article comprising a primary through-hole suitable to insert a pin according to the second aspect of the invention, and a secondary through-hole transverse to the primary through-hole and suitable to insert a retainer system according to first part of the invention in.
Such an article is suitable to be assembled with a pin as described above, that can be secured by a retainer system as described above. Accordingly, all of the above stated advantages can be obtained when using the article according to the invention.
The article may be any connecting component in heavy-duty equipment, such as a shackle, for instance a drag shackle for dragline rigging.
The article may be cast in steel or made of machined steel.
Preferably, in the article according to the invention, the primary through-hole is at a first entry side circular cross-section, and at the second entry side has a cross-section which is larger and preferably non-circular.
Such a second entry side is suitable for achieving an abutting, non-rotating contact with an end of the pin that that has an enlarged, mating contour.
In a further preferred embodiment of the article according to the invention, the secondary through-hole has a cross section at both entry sides which is larger and which is preferably at least at one entry side non-circular.
Such entry sides of the secondary through-hole are suitable to achieve an abutting contact with both protruding ends of a retainer system according to the invention, when it is positioned in secured mode.
With particular preference the invention relates an article according to the third aspect of the invention, assembled with a pin according to the second aspect of the invention in operable position, and a retainer system according to the first aspect of the invention in secured position.
Such an assembly achieves all the advantages discussed in relation to the three constitutional parts.
The invention will be further be explained with reference to the appended drawings, in which:
Fig. 1 shows in perspective an article according to a preferred embodiment of the invention;
Fig. 2 shows in perspective a pin according to a preferred embodiment of the invention;
Fig. 3 shows in perspective a retainer system according to a preferred embodiment of the invention;
Fig. 4 shows in perspective and disassembled the constituting parts of a locking end part according to a preferred embodiment of the invention;
Fig. 5 shows in cross section a locking end part closely fitting inside an integral end part according to a preferred embodiment of the invention;
Fig. 5-1 shows in cross-section the locking end part shown in fig. 5, when it is in the secured position.
Fig. 6 shows in perspective an assembly according to a preferred embodiment of the invention of an article, a pin in operable position and a retainer system to be positioned in its securing mode.
Fig. 7 shows a cross-section of a primary through hole of an article according to a preferred embodiment of the invention;
Fig. 8 shows a cross-section of a secondary through hole of an article according to a preferred embodiment of the invention;
Fig. 9 shows in perspective an assembly according to a preferred embodiment of the invention of an article, a pin in operable position and a retainer system which is positioned in its securing mode.
In the figures, identical parts are referred to by identical reference numbers.
Fig 1 shows a heavy-duty U-shaped shackle 1, having legs 3a and 3b, the ends of which are provided with a primary through-hole 5, and one end 3 a of which is additionally provided with a secondary through-hole 8 transverse to the primary through-hole. The primary through-hole 5 at end 3b has a first entry side (accessible from the left outside of the article) of a circular cross-section, and a second entry side 6 at end 3a (accessible from the right outside of the article) which has a cross-section which that is larger than the circular cross-section of through hole 5, and which is of a square shape. The second entry side 6 has a bottom part 7 in which the circular through-hole 5 is provided.
Fig. 2 shows a pin 20 of a cylindrical main body 21 having a main axis 25 which is provided at a first end with an enlarged pin head 22, having a retainer cavity 23 in which a retainer system according to the invention can be inserted. The retainer cavity 23 is substantially elongate and transverse to the main axis direction 25 of the pin, the retainer cavity spanning from one side of the first pin end to the other, opposed side of the pin head 22. The retainer cavity 23 is in the form of a U-shaped slot having its open side directed towards the top end of the pin, which open side is partially bridged over by a roof structure 24 connecting both opposed side walls of the slot.
Fig. 3 shows a retainer system 30, comprising a rod-shaped body 31 with a first 33 and second end 34 and a main axis 32. The first end 33 is provided with a protruding structure 35, and the second end 34 comprises an assembly of an integral end part 36 and a locking end part 38 aligned in the main axis of the pin. In fig. 3 the two parts 36 and 38 are shown in their disassembled state. The integral end part 36 comprises an axially positioned bore tapped with screw thread which is provided at the bottom 42 of an engagement room 43 which is further limited by a wall structure 44. The wall structure 44 consists of two parts that are separated from each other by two wall slots. The locking end part 38 has a locking body 45 that closely fits inside the engagement room 43, so that the locking body is vertically movable within the wall structure 44. The locking body 45 comprises a protruding structure 47 for an abutting contact with a second entrance of the secondary through-hole. The locking body is provided at the bottom with an axially oriented bolt 49 with trapezoidal screw thread. The integral end part 36 and the locking end part 38 are assembled by a screwing the bolt 49 into the bore 40. When assembled, the protruding structures 47 will fit inside the wall slots between walls 44.
Fig. 4 shows the disassembled locking end part 38, consisting of two halves 45a and 45b that make up the locking body 45. The bolt 49 is provided within the locking body 45 as a component which is rotatable independently of the locking body, the bolt comprising a flange 51 above the screw thread 53, which is enclosed within an internal cavity 55 in the locking body 45, which is delimited by a roof 57 and a bottom 59. The top end of the bolt 49 is provided with a hexagonal contour 61 for engagement with a working tool.
Fig. 5 shows the locking end part 38 of Fig. 4 in assembled state, which is in itself assembled with the integral end part 36. By screwing or unscrewing of the bolt 49 in or out of the bore 40, the flange 51 will exert a force in axial direction on the bottom 59 or roof 57 of the internal cavity 55.
The inner surface of the wall structure 44 is provided with a wall relief structure 65 which is a slight protrusion in the form of a rib at a fixed axially height.
The outer surface of the locking body 45 is provided with a locking relief structure 67 which is a slight protrusion in the form of a rib at a fixed axially height.
In the shown position of the locking body, there is no mutual contact between relief structure 65 and 67, which is a released position in the context of the invention.
The small gap 70 between the locking body 45 and the wall structure 44, is such that the locking relief structure and the wall relief structure will contact each other mutually under strong shear forces, when they are brought at the same height. These forces will lead to an elastic deformation of the two structures, so that both structures can slide along each other when sufficient translational force is applied. This force is applied by the (un)screwing of the bore.
When the locking body is screwed in completely into the engagement room 43, the two structures 65 and 67 have passed each other, so that structure 67 is below 65 and there is again no mutual contact. In that final state, the wall relief structure 65 encloses the locking relief structure 67.
Fig. 5-1 shows the above described final state of a secured position of the locking body 45 within the engagement room 43. One sealing O-ring 92 is provided between the bolt and locking body surfaces, and one sealing O-ring 90 is present at the outer surface of the locking body 45 making a sealing with the engagement room 43.
Fig. 6 shows the initial phase of securing a closing pin 20 inside a shackle 10 by inserting the retainer system 30 without the locking end part 38 from one entry side of the secondary through-hole 8, and subsequently positioning the locking end part 38 from the opposing entry side of the secondary through hole 8.
Fig. 7 shows, - with reference to fig. 1 - a cross-section of the primary through hole at end 3a, which has a square cross-section with a bottom part 7 in which a circular through-hole 5 is provided. The transverse secondary through-hole 8 has different contours at different depths E, D and C, progressing from the entry side. The opposite entry side of the secondary through-hole 8 is provided in a symmetrical way with similar different contours.
Fig. 8 shows in cross-section of the entry side of the secondary through hole 8, the circular contour E which is larger than circular contour C. Intermediate contour D is rectangular and oversized to contour C. Contour D matingly abuts with the protruding structures 35 and 47 at the ends of the retainer system 30.
Fig. 9 shows the accessibility of the retainer system 30 in its secured position within the retainer cavity 23 of the pin head 22. The roof structure 24 leaves ample room for a technician to access the main body of the retainer system 30, in case the main body is stuck within the cavity 23 and has to be removed forcefully using any appropriate tools.

Claims (23)

1. Vergrendelsysteem voor het bevestigen van een pen in een werkzame positie in een artikel, dat is voorzien van een bijpassend primair doorgaand gat waar de pen in wordt gestoken en van een secundair doorgaand gat dwars op het primaire doorgaande gat waar het vergrendelsysteem in wordt gestoken, waarbij de pen aan één uiteinde is voorzien van een vergrendelholte waarin het vergrendelsysteem wordt aangebracht voor het bevestigen van de pen, waarbij het vergrendelsysteem een staafvormig lichaam heeft met een eerste en een tweede uiteinde en een hoofdas, waarbij: het eerste uiteinde is voorzien van een uitstekende structuur voor een aangrenzend contact met een eerste ingang van het secundaire doorgaande gat, en het tweede uiteinde een samenstel omvat van een integraal einddeel en een in de hoofdas van de pen uitgelijnd afsluitend einddeel, waarbij het afsluitende einddeel een afsluitlichaam omvat, omvattende een uitstekende structuur voor een aangrenzend contact met een tweede ingang van het secundaire doorgaande gat, waarbij het afsluitlichaam verplaatsbaar is ten opzichte van het integrale einddeel dankzij een schroefkoppeling over een traject tussen: - een vastgemaakte positie voor het vergrendelen van de pen, en - een losgemaakte positie voor het uitnemen van het afsluitende einddeel uit het integrale einddeel.A locking system for securing a pin in an operative position in an article, which includes a matching primary through hole into which the pin is inserted and a secondary through hole transversely of the primary through hole into which the locking system is inserted , wherein the pin is provided at one end with a locking cavity in which the locking system is arranged for attaching the pin, wherein the locking system has a rod-shaped body with a first and a second end and a main axis, wherein: the first end is provided with a protruding structure for an adjacent contact with a first entrance of the secondary through hole, and the second end comprises an assembly of an integral end part and a closing end part aligned in the main axis of the pin, the closing end part comprising a closing body, comprising a excellent structure for an adjacent contact with a second input v of the secondary through-hole, wherein the closing body is movable relative to the integral end part thanks to a screw coupling over a path between: - a fixed position for locking the pin, and - a released position for taking the closing end part out of the integral end part. 2. Vergrendelsysteem volgens conclusie 1, waarbij het integrale einddeel een aangrijpruimte aan het uiteinde van het integrale einddeel omvat, die wordt beperkt door een wandstructuur van het integrale einddeel, en een axiaal aangebracht boorgat dat met schroefdraad is getapt aan de onderzijde van de aangrijpruimte, het afsluitlichaam is verticaal verplaatsbaar in de wandstructuur van het integrale einddeel, het afsluitlichaam omvat verder een axiaal georiënteerde bout met schroefdraad aan het onderste uiteinde van het lichaam, het integrale einddeel en het afsluitende einddeel worden samengesteld door middel van een schroefaangrijping van de bout op het boorgat.2. Locking system as claimed in claim 1, wherein the integral end part comprises an engagement space at the end of the integral end part, which is limited by a wall structure of the integral end part, and an axially arranged borehole threaded on the underside of the engagement space, the closing body is vertically movable in the wall structure of the integral end part, the closing body further comprises an axially oriented bolt with screw thread at the lower end of the body, the integral end part and the closing end part are assembled by means of a screw engagement of the bolt on the borehole. 3. Vergrendelsysteem volgens conclusie 2, waarbij in een deel van het traject tussen de vastgemaakte positie en de losgemaakte positie van het afsluitlichaam, het afsluitlichaam en de wandstructuur in onderling contact zijn, wat leidt tot een elastische vervorming van het buitenvlak van het afsluitlichaam, en/of het binnenvlak van de wandstructuur.3. Locking system according to claim 2, wherein in part of the path between the fixed position and the released position of the closing body, the closing body and the wall structure are in mutual contact, which leads to an elastic deformation of the outer surface of the closing body, and / or the inner surface of the wall structure. 4. Vergrendelsysteem volgens één van de bovengaande conclusies 2 of 3, waarbij een afsluitende reliëfstructuur is voorzien aan het buitenvlak van het afsluitlichaam op een vaste axiale hoogte, en een wandreliëfstructuur is voorzien aan het binnenvlak van de wandstructuur op een vaste axiale hoogte, waarbij elke reliëfstructuur zodanige afmetingen heeft gekregen dat: - in de vastgemaakte positie van het afsluitlichaam de wandreliëfstructuur boven de afsluitende reliëfstructuur ligt en de wandreliëfstructuur de afsluitende reliëfstructuur zonder onderling contact omsluit, en - in een deel van het traject tussen de vastgemaakte positie en de losgemaakte positie van het afsluitlichaam, de afsluitende reliëfstructuur en de wandreliëfstructuur in onderling contact zijn, wat leidt tot een elastische vervorming van de twee respectievelijke reliëfstructuren.A locking system according to any of the preceding claims 2 or 3, wherein a closing relief structure is provided on the outer surface of the closing body at a fixed axial height, and a wall relief structure is provided on the inner surface of the wall structure at a fixed axial height, wherein each relief structure has been dimensioned such that: - in the fixed position of the closing body, the wall relief structure is above the closing relief structure and the wall relief structure encloses the closing relief structure without mutual contact, and - in part of the path between the fixed position and the released position of the sealing body, the sealing relief structure and the wall relief structure are in mutual contact, which leads to an elastic deformation of the two respective relief structures. 5. Vergrendelsysteem volgens één van de bovengaande conclusies 2 tot en met 4, waarbij er een afdichtmateriaal is voorzien tussen het afsluitlichaam en de aangrijpruimte.Locking system as claimed in any of the foregoing claims 2 to 4, wherein a sealing material is provided between the closing body and the engaging space. 6. Vergrendelsysteem volgens één van de bovengaande conclusies 4 of 5, waarbij de wandreliëfstructuur en/of afsluitende reliëfstructuur uitsteekt vanaf het aangrenzende oppervlak in de vorm van een kam, rib of bult.Locking system according to one of the preceding claims 4 or 5, wherein the wall relief structure and / or closing relief structure protrudes from the adjacent surface in the form of a comb, rib or hump. 7. Vergrendelsysteem volgens één van de bovengaande conclusies, waarbij het vergrendelsysteem in hoofdzaak cilindrisch is.Locking system according to one of the preceding claims, wherein the locking system is substantially cylindrical. 8. Vergrendelsysteem volgens één van de bovengaande conclusies, waarbij ten minste één uiteinde van het vergrendelsysteem een uitstekende structuur heeft van een omtrek die niet-cirkelvormig in dwarsdoorsnede is en die is ontworpen om te passen in aangrenzend contact met een bijpassende omtrek van ten minste één ingangszijde van het secundaire doorgaande gat.A locking system according to any of the preceding claims, wherein at least one end of the locking system has a protruding structure of a circumference that is non-circular in cross-section and that is designed to fit in adjacent contact with a matching circumference of at least one entrance side of the secondary through hole. 9. Vergrendelsysteem volgens één van de bovengaande conclusies 2 tot en met 8, waarbij de wandstructuur van het integrale einddeel is voorzien van één of meer wandgleuven, en de uitstekende structuur van het afsluitlichaam zodanige afmetingen heeft dat deze verticaal in de wandgleuven schuift.Locking system according to one of the preceding claims 2 to 8, wherein the wall structure of the integral end part is provided with one or more wall slots, and the protruding structure of the closing body has dimensions such that it slides vertically into the wall slots. 10. Vergrendelsysteem volgens één van de bovengaande conclusies, waarbij de buitenomtrek van het afsluitlichaam in hoofdzaak een cilindrische vorm heeft.Locking system according to one of the preceding claims, wherein the outer circumference of the closing body has substantially a cylindrical shape. 11. Vergrendelsysteem volgens één van de bovengaande conclusies 2 tot en met 10, waarbij de bout in het afsluitlichaam is voorzien als een component die onafhankelijk van het afsluitlichaam draaibaar is, waarbij de bout een positioneringsstructuur boven de schroefdraad omvat, die is omsloten in een inwendige holte in het afsluitlichaam, waarbij de positioneringsstructuur in staat is om een kracht in axiale richting op het afsluitlichaam uit te oefenen gedurende de verplaatsing van het afsluitlichaam.A locking system according to any of the preceding claims 2 to 10, wherein the bolt is provided in the shut-off body as a component that is rotatable independently of the shut-off body, wherein the bolt comprises a positioning structure above the screw thread enclosed in an internal cavity in the closure body, the positioning structure being able to exert an axial directional force on the closure body during the movement of the closure body. 12. Vergrendelsysteem volgens conclusie 11, waarbij er een afdichtmateriaal is voorzien tussen aangrenzende oppervlakken van de bout en het afsluitlichaam, dat bij voorkeur aanwezig is boven de inwendige holte van het afsluitlichaam.Locking system according to claim 11, wherein a sealing material is provided between adjacent surfaces of the bolt and the closing body, which is preferably present above the internal cavity of the closing body. 13. Vergrendelsysteem volgens conclusie 11 of 12, waarbij het afsluitlichaam is voorzien als een samenstel van twee helften in dwarsdoorsnede in axiale richting door de inwendige holte.Locking system according to claim 11 or 12, wherein the closing body is provided as an assembly of two halves in cross-section in axial direction through the inner cavity. 14. Vergrendelsysteem volgens één van de bovengaande conclusies 2 tot en met 13, waarbij de schroefdraad voor de bout en het boorgat trapezoïdaal is.Locking system according to one of the preceding claims 2 to 13, wherein the screw thread for the bolt and the borehole is trapezoidal. 15. Vergrendelsysteem volgens één van de bovengaande conclusies 2 tot en met 14, waarbij het bovenste deel van de bout is voorzien van een omtrek voor aangrijping door een gereedschap.Locking system according to one of the preceding claims 2 to 14, wherein the upper part of the bolt is provided with a circumference for engagement by a tool. 16. Pen die bevestigbaar is door middel van een vergrendelsysteem in een werkzame positie in een artikel, waarbij het artikel is voorzien van een bijpassend primair doorgaand gat waar de pin in wordt gestoken en van een secundair doorgaand gat dwars op het primaire doorgaande gat en waarin het vergrendelsysteem wordt gestoken, waarbij de pen een hoofdas heeft en bij een eerste uiteinde is voorzien van een afsluitholte waarin een vergrendelsysteem volgens één van de voorgaande conclusies kan worden gestoken, waarbij de vergrendelholte in hoofdzaak langgerekt is en dwars op de hoofdasrichting van de pen staat, waarbij de vergrendelholte zich uitstrekt vanaf één zijde van het eerste uiteinde van de pen naar de andere overliggende zijde van het eerste uiteinde van de pen.A pin attachable by means of a locking system in an operative position in an article, the article being provided with a matching primary through hole into which the pin is inserted and with a secondary through hole transversely of the primary through hole and into which the locking system is inserted, wherein the pin has a main axis and is provided with a closing cavity at a first end into which a locking system according to one of the preceding claims can be inserted, wherein the locking cavity is substantially elongated and is transverse to the main axis direction of the pin wherein the locking cavity extends from one side of the first end of the pin to the other opposite side of the first end of the pin. 17. Pen volgens conclusie 16, waarbij de vergrendelholte een gleuf is met haar open zijde gericht naar het bovenste uiteinde van de pen, welke open zijde gedeeltelijk wordt overbrugd door een dakstructuur die beide overliggende zijwanden van de gleuf verbindt.The pin of claim 16, wherein the locking cavity is a slot with its open side facing the upper end of the pin, which open side is partially bridged by a roof structure that connects both opposite side walls of the slot. 18. Pen volgens conclusie 16 of 17, waarbij één uiteinde van de pen, bij voorkeur het eerste uiteinde van de pen dat is voorzien van de vergrendelholte, een omtrek heeft die groter is dan de omtrek van het hoofdlichaam van de pen tussen zijn twee uiteinden, welke vergrote omtrek geschikt is voor het tot stand brengen van een aangrenzend contact met een bijpassende eerste ingangszijde van het primaire doorgaande gat van het artikel.The pin of claim 16 or 17, wherein one end of the pin, preferably the first end of the pin provided with the locking cavity, has a circumference greater than the circumference of the main body of the pin between its two ends which enlarged circumference is suitable for establishing an adjacent contact with a matching first input side of the primary through hole of the article. 19. Pen volgens één van de conclusies 16 tot en met 18, die een hoofdlichaam heeft van in hoofdzaak cilindrische vorm tussen zijn twee uiteinden.The pin of any one of claims 16 to 18, which has a main body of substantially cylindrical shape between its two ends. 20. Artikel omvattende een primair doorgaand gat dat geschikt is om een pen in te steken volgens het tweede aspect van de uitvinding, en een secundair doorgaand gat dwars op het primaire doorgaande gat en dat geschikt is om een vergrendelsysteem in te steken volgens het eerste deel van de uitvinding.20. Article comprising a primary through hole suitable for inserting a pin according to the second aspect of the invention, and a secondary through hole transverse to the primary through hole and adapted to insert a locking system according to the first part of the invention. 21. Artikel volgens conclusie 20, waarbij het primaire doorgaande gat bij een eerste ingangszijde een cirkelvormige doorsnede heeft, en bij de tweede ingangszijde een dwarsdoorsnede heeft die groter is en bij voorkeur niet-cirkelvormig.The article of claim 20, wherein the primary through-hole has a circular cross-section at a first entrance side, and a cross-section at the second entrance side that is larger and preferably non-circular. 22. Artikel volgens conclusie 20 of 21, waarbij het secundaire doorgaande gat een dwarsdoorsnede aan beide ingangszijden heeft die groter is en die bij voorkeur ten minste aan één inganszijde niet-cirkelvormig is.An article according to claim 20 or 21, wherein the secondary through-hole has a cross-section on both entry sides that is larger and that is preferably non-circular on at least one entry side. 23. Artikel volgens één van de conclusies 20 tot en met 22, samengesteld met een pen volgens één van de conclusies 16 tot en met 19, en een vergrendelsysteem volgens de conclusies 1 tot en met 15.An article according to any of claims 20 to 22, assembled with a pin according to one of claims 16 to 19, and a locking system according to claims 1 to 15.
NL2013750A 2014-11-07 2014-11-07 Retainer system for securing a pin, a pin adapted to said retainer system, and an article suitable for use of said pin and retainer system. NL2013750B1 (en)

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NL2013750A NL2013750B1 (en) 2014-11-07 2014-11-07 Retainer system for securing a pin, a pin adapted to said retainer system, and an article suitable for use of said pin and retainer system.

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NL2013750A NL2013750B1 (en) 2014-11-07 2014-11-07 Retainer system for securing a pin, a pin adapted to said retainer system, and an article suitable for use of said pin and retainer system.

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994017312A1 (en) * 1993-01-29 1994-08-04 Bannerdeck Pty. Ltd. Pin assembly for a component
AU2005203717A1 (en) * 2004-08-20 2006-03-09 Bradken Resources Pty Limited Locking mechanism
WO2009149503A1 (en) * 2008-06-11 2009-12-17 Cqms Pty Ltd A locking pin system
WO2013090996A1 (en) * 2011-12-21 2013-06-27 L & H Industrial Australia Pty Ltd Retainer systems

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994017312A1 (en) * 1993-01-29 1994-08-04 Bannerdeck Pty. Ltd. Pin assembly for a component
AU2005203717A1 (en) * 2004-08-20 2006-03-09 Bradken Resources Pty Limited Locking mechanism
WO2009149503A1 (en) * 2008-06-11 2009-12-17 Cqms Pty Ltd A locking pin system
WO2013090996A1 (en) * 2011-12-21 2013-06-27 L & H Industrial Australia Pty Ltd Retainer systems

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