NL2011615C2 - Saw for sawing through an object, notably an offshore object or onshore object. - Google Patents

Saw for sawing through an object, notably an offshore object or onshore object. Download PDF

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Publication number
NL2011615C2
NL2011615C2 NL2011615A NL2011615A NL2011615C2 NL 2011615 C2 NL2011615 C2 NL 2011615C2 NL 2011615 A NL2011615 A NL 2011615A NL 2011615 A NL2011615 A NL 2011615A NL 2011615 C2 NL2011615 C2 NL 2011615C2
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NL
Netherlands
Prior art keywords
main pin
bush
saw
elements
saw according
Prior art date
Application number
NL2011615A
Other languages
Dutch (nl)
Inventor
Feike Oebele Brouwer
Wessel Helmens
Nicolaas Lamphen
Original Assignee
Mammoet Engineering B V
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
Application filed by Mammoet Engineering B V filed Critical Mammoet Engineering B V
Priority to NL2011615A priority Critical patent/NL2011615C2/en
Application granted granted Critical
Publication of NL2011615C2 publication Critical patent/NL2011615C2/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/18—Sawing tools of special type, e.g. wire saw strands, saw blades or saw wire equipped with diamonds or other abrasive particles in selected individual positions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D57/00—Sawing machines or sawing devices not covered by one of the preceding groups B23D45/00 - B23D55/00
    • B23D57/0084—Sawing machines or sawing devices not covered by one of the preceding groups B23D45/00 - B23D55/00 specially adapted for sawing under water or at places accessible with difficulty
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/12—Saw-blades or saw-discs specially adapted for working stone
    • B28D1/124—Saw chains; rod-like saw blades; saw cables
    • B28D1/125—Saw chains; rod-like saw blades; saw cables with exchangeable cutter bits or cutter segments

Description

Saw for sawing through an object, notably an offshore object or onshore object
The invention relates to a saw for sawing through an object, notably an offshore object or onshore object, such as a shipwreck or similar, comprising a cable or chain provided with elements with an abrasive and/or cutting surface. The invention also relates to a method of assembling such a saw.
Such a saw for sawing through an object is known from W003/009960. This known saw comprises a wire, such as a wire cable, having a end connection at each end; a plurality of bushes threaded on the wire; and stop means provided at each end of the wire for holding the bushes on the wire. The circumferential surfaces of the bushes are provided with cutting means. The passage of each bush has a cross section larger than the cross section of the wire such that each bush is slidable on said wire. The stop means engage, at least are engageable, on the one hand with the respective end connection and on the other hand with the respective terminal bush.
There are notable disadvantages to this known saw.
During its use play may occur between the bushes of the saw which may cause that the saw gets stuck in the material being sawn, and that the wire of the saw gets damaged. One of the other problems is that when it requires repair, a complete dismantling and reassembling is required to replace the parts that have worn out by parts that make the reassembled saw fit for reuse. Further, if the wire breaks the bushes that are provided on the wire may get lost. Still another disadvantage is that the wire suffers from relatively high wear and tear due to the movement of the bushes along the wire.
It is an object of the invention to improve or provide an alternative to this known saw, which is more resistant to damage of its wire, is less likely to get stuck in the material being sawn, and is easier to assemble and/or which is easier to repair and/or which is less sensitive to wear and tear.
The saw of the invention is provided with one or more of the features of the appended claims.
In a first' aspect of the invention the cable or chain that is provided with elements with an abrasive and/or cutting surface, has the feature that the elements are interconnected with screw connections. With this in retrospect relatively simple measure it is shown possible to improve the resistance of the saw of the invention against wear and tear, to prevent that the saw gets stuck during operation in the material being sawn, and that the assembly, but particularly the repair of the saw of the invention is tremendously simplified in comparison with the prior art.
Another aspect of the invention is that the elements are of at least two types, a first type constituted as a main pin, and a second type constituted as a bush, wherein a series of main pins and bushes are alternated and connected to each other to form the cable or chain. This feature promotes the strength of the saw of the invention and also its ease of manufacturing and/or repairing since the elements can easily be threaded together, without the need to take the now obviated central continuous wire of the prior art into account. The construction further promotes the resistance of the saw the invention against wear and tear, and enables the ease of replacing intermediate elements should nevertheless the need arise to carry out a repair of the saw.
It is advantageous that each main pin has two opposed extremities, wherein each extremity is provided with screw thread for making the screw connections with the adjacent bushes on the opposing sides of the main pin. A further preferable feature is that on each extremity of a main pin a spherical ring is mounted or mountable that engages an inner surface of the bush that connects to said extremity of the main pin. This secures the connection between the main pin and the bush, particularly in the embodiment wherein on each extremity of the main pin a nut is mountable to prevent dislodging of the spherical ring from the extremity of the main pin.
Another preferential feature is that each bush has two spherical surfaces, each such spherical surface being provided on a side facing an adjacent bush. In this construe- tion the adjacent bushes with the connecting main pin in between may form a so-called pivot bearing which allows rotation of the elements of the saw in several directions, yet limiting the extent of possible angular rotation.
For the ease of manufacturing and repair of the saw the invention it is further beneficial that each bush is assembled from two separable bush parts that in the assembled bush connect to each other with a connection socket.
In a preferred embodiment the connection socket is provided with screw thread at its outer circumference that cooperates with screw threads at the inner surfaces of the separable bush parts.
It is advantageous that one of the elements is a spacer provided around a main pin and between two adjacent bushes. This spacer provides for a reduction in diameter transition between neighbouring bushes and minimizes the impact loads that may occur on the bushes during a saw-ing/cutting operation. In addition, the spacer reduces the risk of scrap getting stuck or clamped between the neighbouring bushes during a sawing operation. Optionally the spacer can be provided with an elastic material to seal off the gap between the neighbouring bushes. It is then also possible to enclose a lubricant in the closed of connection between the neighbouring bushes and the connecting main pin.
The invention also relates to a method for assembling a saw for sawing through an object, comprising a cable or chain provided with elements with an abrasive and/or cutting surface, which has the steps of -providing elements of at -least two types, a first type constituted as a main pin, and a second type constituted as a bush, wherein a series of main pins and bushes are alternated and connected to each other using screw connections to form the cable or chain; -providing that each bush is assembled from two separable bush parts that are to be connected to each other with a connection socket to provide an assembled bush; -providing the connection socket with screw thread at its outer circumference and providing screw threads at the inner surfaces of the separable bush parts to cooperate with the screw thread of the connection socket to form the assembled bush; -providing each bush with two spherical surfaces, each such spherical surface being provided on a side facing an adjacent bush; -providing each main pin with two opposed extremities, each extremity being provided with screw thread for making the screw connections with the adjacent bush parts on the opposing sides of the main pin; -providing on each extremity of a main pin a spherical ring to engage an inner surface of the bush part that is to be connected to said extremity οΐ the main pin; and -providing on each extremity of such main pin a nut to prevent dislodging of the spherical ring from the extremity of the main pin.
The invention will hereinafter be further elucidated with reference to the drawing showing a schematic representation of the saw of the invention.
In the drawing: -figure 1 schematically shows a three-dimensional view at a part of a saw according to the invention; -figure 2 shows two neighbouring bushes and an intermediate main pin connecting said bushes, as forming part of a saw according to the invention.
Whenever in the figures the same reference numerals are applied, these numerals refer to the same parts.
Referring first to figure 1 a saw for sawing through an object is shown basically constituted as a a cable or chain of elements which may be provided with an abrasive and/or cutting surface. Although not shown the cable or chain preferably forms a closed loop so that the saw may be operated as described in the nonpublished Dutch patent application NL-2009954.
Referring now to figure 2 the elements are shown that make up. the cable or chain forming the saw the invention. At least some elements, notably the elements identified as the bushes 1, are provided with an abrasive and/or cutting surface.
The elements are of at least two types, a first type constituted as a main pin 4, and a second type constituted as a bush 1, wherein a series of main pins 4 and bushes 1 are alternated and interconnected with screw connections to form the cable or chain.
Each main pin 4 has two opposed extremities 4.1 and 4.2, wherein each extremity 4.1; 4.2 is provided with screw thread 8 for making the screw connections with the adjacent bushes 1.1; 1.2 on the opposing sides of the main pin 4. It is further shown that on each extremity 4.1; 4.2 of a main pin 4 a spherical ring 6 is mounted or mountable that engages an inner surface of the bush 1.1; 1.2 that connects to said extremity 4.1; 4.2 of the main pin 4. Further on each extremity 4.1; 4.2 of the main pin 4 a nut 5 is mountable to prevent dislodging of the spherical ring 6 from the concerning extremity 4.1; 4.2 of the main pin 4.
It is further shown that each bush 1.1; 1.2 has two spherical surfaces A, B, each such spherical surface A, B being provided on a side facing an adjacent bush. In figure 2 the spherical surfaces of adjacent bushes 1.1; 1.2 that face each other are both indicated with letter A.
It is further noteworthy that preferably each bush 1.1; 1.2 is assembled from two separable bush parts 1.1A; 1.1B and 1.2A; 1.2B that in the assembled bush 1.1; 1.2 connect to each other with a connection socket 2 inside of the bush 1.1; 1.2. The connection socket 2 is to this end preferably provided with screw thread at its outer circumference that cooperates with screw threads at the inner surfaces of the separable bush parts 1.1A; 1. IB and 1.2A; 1.2B.
Figure 2 further shows that one of the elements is a spacer 3 provided around the main pin 4 and between two adjacent bushes 1.1 and 1.2.
Further it is remarked that the invention also relates to a method for assembling a saw for sawing through an object, comprising a cable or chain provided with elements with an abrasive and/or cutting surface, with the features of -providing elements 1, 2, 3, 4 of at least two types, a first type constituted as a main pin 4, and a second type constituted as a bush 1, wherein a series of main pins 4 and bushes 1.1; 1.2 are alternated and connected to each other using screw connections to form the cable or chain; -providing that each bush 1.1; 1.2 is assembled from two separable bush parts 1.1A; 1. IB and 1.2A; 1.2B that are to be connected to each other with a connection socket 2 to provide an assembled bush 1.1; 1.2; -providing the connection socket 2 with screw thread at its outer circumference and providing screw threads at the inner surfaces of the separable bush parts 1. IA; 1. IB and 1.2A; 1.2B to cooperate with the screw thread of the connection socket 2 to form the assembled bush; -providing each bush 1.1; 1.2 with two spherical surfaces A, B, each such spherical surface being provided on a side facing an adjacent bush; -providing each main pin 4 with two opposed extremities 4.1; 4.2, each extremity being provided with screw thread 8 for making the screw connections with the adjacent bush parts 1.1A; 1.2A on the opposing sides of the main pin 4; -providing on each extremity 4.1; 4.2 of a main pin 4 a spherical ring 6 to engage an inner surface of the bush part 1.1A; 1.2A that is to be connected to said extremity of the main pin 4; and -providing on each extremity 4.1; 4.2 of such main pin 4 a nut 5 to prevent dislodging of the spherical ring 6 from the extremity 4.1; 4.2 of the main pin 4.
It is explicitly remarked that the foregoing description and elucidation is not to be considered restrictive as to the appended claims. Said description and elucidation merely serve to remove any possible ambiguity with respect to the wording of the claims. The scope of protection that merits the invention is however entirely determined by the appended claims, which embrace any possible variation to the offered description and elucidation.

Claims (10)

1. Zaag voor het door een object zagen in het bijzonder een offshore object of een object aan de vaste wal, zoals een scheepswrak of vergelijkbaar, omvattende een kabel of ketting voorzien van elementen waarvan ten minste enkele een schurend en/of snij oppervlak bezitten, met het kenmerk, dat de elementen (1, 4) onderling verbonden zijn met schroefverbindingen .1. Saw for sawing through an object, in particular an offshore object or an object on the fixed shore, such as a shipwreck or similar, comprising a cable or chain provided with elements of which at least some have an abrasive and / or cutting surface, characterized in that the elements (1, 4) are mutually connected with screw connections. 2. Zaag volgens conclusie 1, met het kenmerk, dat de elementen voorzien zijn in ten minste twee types, een eerste type gevormd als een hoofdpen (4), en een tweede type gevormd als een bus (1), waarbij een serie van hoofdpennen (4) en bus- sen (1) alternerend met elkaar verbonden zijn voor het vormen van de kabel of ketting.Saw according to claim 1, characterized in that the elements are provided in at least two types, a first type formed as a main pin (4), and a second type formed as a bush (1), wherein a series of main pins (4) and buses (1) are alternately connected to each other to form the cable or chain. 3. Zaag volgens conclusie 2, met het kenmerk, dat iedere hoofdpen (4) twee tegenover gestelde uiteinden (4.1/ 4.2) bezit, waarbij ieder uiteinde voorzien is van schroefdraad (8) voor het maken van de schroefverbindingen met de naastliggende bussen (1.1; 1.2) aan de tegenover gelegen zijden van hoofdpen (4) .A saw according to claim 2, characterized in that each main pin (4) has two opposite ends (4.1 / 4.2), each end being provided with screw thread (8) for making the screw connections with the adjacent bushes (1.1) 1.2) on the opposite sides of main pin (4). 4. Zaag volgens één der conclusies 2-3, met het kenmerk, dat op ieder uiteinde (4.1; 4.2) van een hoofdpen (4) een sferische ring (6) gemonteerd is of monteerbaar is die raakt aan een binnenoppervlak van de bus (1.2; 1.2) welke verbindt met genoemd uiteinde (4.1; 4.2) van de hoofdpen (4).A saw according to any one of claims 2-3, characterized in that a spherical ring (6) is mounted on each end (4.1; 4.2) of a main pin (4) or can be mounted which touches an inner surface of the bush ( 1.2; 1.2) which connects to said end (4.1; 4.2) of the main pin (4). 5. Zaag volgens conclusie 4, met het kenmerk, dat aan ieder uiteinde (4.1; 4.2) van de hoofdpen (4) een moer (5) monteerbaar is voor het voorkomen dat de sferische ring (6) los komt van het uiteinde (4.1; 4.2) van de hoofdpen (4).Saw according to claim 4, characterized in that a nut (5) can be mounted on each end (4.1; 4.2) of the main pin (4) to prevent the spherical ring (6) from coming loose from the end (4.1) 4.2) of the main pin (4). 6. Zaag volgens één der conclusies 2-5, met het kenmerk, dat iedere bus (1.1; 1.2) twee sferische oppervlakken (A; B) bezit, waarbij ieder van dergelijke sferische oppervlakken (A; B) voorzien is van een zijde die gericht is naar een naastliggende bus.A saw according to any one of claims 2 to 5, characterized in that each bush (1.1; 1.2) has two spherical surfaces (A; B), each of such spherical surfaces (A; B) having a side that is directed to an adjacent bus. 7. Zaag volgens één der conclusies 2-6, met het kenmerk, dat iedere bus (1.1; 1.2) is geassembleerd uit twee van elkaar scheidbare busdelen (1.1A, 1.1B; 1.2A, 1.2B) die in de samengestelde bus (1.1/ 1.2) met elkaar verbonden zijn met een verbindingssok (2).A saw according to any one of claims 2-6, characterized in that each bush (1.1; 1.2) is assembled from two mutually separable bush parts (1.1A, 1.1B; 1.2A, 1.2B) which are mounted in the assembled bush ( 1.1 / 1.2) are connected to each other with a connection socket (2). 8. Zaag volgens conclusie 7, met het kenmerk, dat de verbindingssok (2) voorzien is van schroefdraad aan haar buitenomtrek die samenwerkt met schroefdraden aan de binnenopper-vlakken van de van elkaar scheidbare busdelen (1.1A, 1.1B; 1.2A, 1.2B).A saw according to claim 7, characterized in that the connecting socket (2) is provided with screw thread on its outer circumference which cooperates with screw threads on the inner surfaces of the separable bush parts (1.1A, 1.1B; 1.2A, 1.2 B). 9. Zaag volgens één der voorgaande conclusies 1-8, met het kenmerk, dat één van de elementen een afstandstuk (3) is dat voorzien is rond een hoofdpen (4) en tussen twee naastliggende bussen (1.1; 1.2).A saw according to any one of the preceding claims 1-8, characterized in that one of the elements is a spacer (3) provided around a main pin (4) and between two adjacent bushes (1.1; 1.2). 10. Werkwijze voor het samenstellen van een zaag voor het door een object zagen, omvattende een kabel of ketting voorzien van elementen met een schurend en/of snijdend oppervlak gekenmerkt door -het verschaffen van elementen van ten minste twee typen, een eerste type gevormd als een hoofdpen (4), en een tweede type gevormd als een bus (1), waarbij een serie hoofdpennen (4) en bussen (1) gealterneerd zijn en met elkaar verbonden zijn onder gebruikmaking van schroefverbindingen voor het vormen van de kabel of ketting; -voorzien dat iedere bus (1.1; 1.2) is samengesteld uit twee van elkaar scheidbare busdelen (1.1A, 1.1B; 1.2A, 1.2B) die met elkaar verbonden worden met een verbindingssok (2) voor het verschaffen van een samengestelde bus (1.1; 1.2); -voorzien van schroefdraad aan de buitenomtrek van de verbindingssok (2) en voorzien van schroefdraden aan de bin-nenoppervlakken van de van elkaar scheidbare busdelen (1.1A, 1.1B; 1.2A, 1.2B) voor samenwerking met de schroefdraad van de verbindingssok (2) voor het vormen van de samengestelde bus (1.1; 1.2); -voorzien van twee sferische oppervlakken (A; B) aan iedere bus (1.1; 1.2) waarbij ieder sferische oppervlak voorzien is aan een zijde die gericht is naar een naastliggende bus ; -verschaffen van twee tegenover liggende uiteinden (4.1; 4.2) aan iedere hoofdpen (4), waarbij ieder uiteinde voorzien is van schroefdraad (8) voor het maken van de schroefverbindingen met de naastliggende busdelen (1.IA, 1.1B; 1.2A, 1.2B) aan de tegenover gelegen zijden van de hoofdpen (4) ; -verschaffen van een sferische ring (6) aan ieder uiteinde (4.1/ 4.2) van een hoofdpen (4) voor samenwerking met een binnenoppervlak van het busdeel (1.1A, 1.1B; 1.2A, 1.2B) die verbonden dient te worden met genoemd uiteinde van de hoofdpen (4)/ en -verschaffen van een moer (5) op ieder uiteinde (4.1/ 4.2) van een dergelijke hoofdpen (4) om losmaken van de sferisch ring (6) van het uiteinde (4.1/ 4.2) van de hoofdpen (4) te voorkomen.10. Method for assembling a saw for sawing through an object, comprising a cable or chain provided with elements with an abrasive and / or cutting surface characterized by providing elements of at least two types, a first type formed as a main pin (4), and a second type formed as a bushing (1), wherein a series of main pins (4) and bushes (1) are alternative and connected to each other using screw connections to form the cable or chain; - providing that each bus (1.1; 1.2) is composed of two bus parts (1.1A, 1.1B; 1.2A, 1.2B) that can be separated from each other and which are connected to each other with a connecting socket (2) to provide a composite bus ( 1.1; 1.2); - provided with threads on the outer circumference of the connecting socket (2) and provided with threads on the inner surfaces of the separable sleeve parts (1.1A, 1.1B; 1.2A, 1.2B) for cooperation with the threads of the connecting socket ( 2) for forming the composite bus (1.1; 1.2); - provided with two spherical surfaces (A; B) on each bushing (1.1; 1.2), each spherical surface being provided on a side facing an adjacent bushing; - providing two opposite ends (4.1; 4.2) on each main pin (4), each end being provided with screw thread (8) for making the screw connections with the adjacent bush parts (1.IA, 1.1B; 1.2A, 1.2B) on the opposite sides of the main pin (4); - providing a spherical ring (6) at each end (4.1 / 4.2) of a main pin (4) for cooperation with an inner surface of the bushing part (1.1A, 1.1B; 1.2A, 1.2B) to be connected to said end of the main pin (4) / and providing a nut (5) on each end (4.1 / 4.2) of such a main pin (4) to release the spherical ring (6) from the end (4.1 / 4.2) of the main pin (4).
NL2011615A 2013-10-15 2013-10-15 Saw for sawing through an object, notably an offshore object or onshore object. NL2011615C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL2011615A NL2011615C2 (en) 2013-10-15 2013-10-15 Saw for sawing through an object, notably an offshore object or onshore object.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2011615 2013-10-15
NL2011615A NL2011615C2 (en) 2013-10-15 2013-10-15 Saw for sawing through an object, notably an offshore object or onshore object.

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NL2011615C2 true NL2011615C2 (en) 2015-04-16

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001076797A1 (en) * 2000-04-07 2001-10-18 Smit Engineering B.V. Chain for sawing through an object, such as an object located in or on the water, and sawing installation provided with such a chain
WO2008133529A1 (en) * 2007-04-30 2008-11-06 Beerenberg Frontier As Link element for a cutting chain, and a chain with cutting link elements
NL2002451C2 (en) * 2009-01-26 2010-07-27 Mammoet Holding B V Chain saw.
US20110072944A1 (en) * 2009-09-29 2011-03-31 Jeffrey Eggers Flexible linked cutting system
US20110314979A1 (en) * 2010-06-29 2011-12-29 Bisso Iv William A Cutting apparatus and method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001076797A1 (en) * 2000-04-07 2001-10-18 Smit Engineering B.V. Chain for sawing through an object, such as an object located in or on the water, and sawing installation provided with such a chain
WO2008133529A1 (en) * 2007-04-30 2008-11-06 Beerenberg Frontier As Link element for a cutting chain, and a chain with cutting link elements
NL2002451C2 (en) * 2009-01-26 2010-07-27 Mammoet Holding B V Chain saw.
US20110072944A1 (en) * 2009-09-29 2011-03-31 Jeffrey Eggers Flexible linked cutting system
US20110314979A1 (en) * 2010-06-29 2011-12-29 Bisso Iv William A Cutting apparatus and method

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