NL2021580B1 - Method for jacking up a heavy load, and a filler used in this method - Google Patents

Method for jacking up a heavy load, and a filler used in this method Download PDF

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Publication number
NL2021580B1
NL2021580B1 NL2021580A NL2021580A NL2021580B1 NL 2021580 B1 NL2021580 B1 NL 2021580B1 NL 2021580 A NL2021580 A NL 2021580A NL 2021580 A NL2021580 A NL 2021580A NL 2021580 B1 NL2021580 B1 NL 2021580B1
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NL
Netherlands
Prior art keywords
composite
main body
fillers
stamp
filler
Prior art date
Application number
NL2021580A
Other languages
Dutch (nl)
Inventor
Helmens Wessel
Original Assignee
Mammoet Holding B V
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Publication date
Application filed by Mammoet Holding B V filed Critical Mammoet Holding B V
Priority to NL2021580A priority Critical patent/NL2021580B1/en
Application granted granted Critical
Publication of NL2021580B1 publication Critical patent/NL2021580B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/02—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising animal or vegetable substances, e.g. cork, bamboo, starch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/46—Combinations of several jacks with means for interrelating lifting or lowering movements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/12—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members
    • E04C3/122—Laminated

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Civil Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

Method for jacking up a heavy load making use of a heavy—duty climbing jack (1) comprising a main body (2) and a stamp (3), wherein the main body (2) and the stamp (3) are re— peatedly moved with respect to each other so as to cyclically have the stamp (3) protrude from the main body (2) and be re— tracted in—side the main body (2), and further making use of multiple fillers (4, 5, 6) to be placed in a predetermined se— quence under the main body (2) and stamp (3) respectively of the climbing jack (1), which placement of the fillers (4, 5, 6) is executed in concert with the repeated movement of the stamp (3) and the main body (2) of the climbing jack (1) with respect to each other so as to gradually raise the climbing jack (1) from the ground with the fillers underneath said climbing jack (1), wherein the fillers are provided as a com— posite (4, 5, 6) of bamboo strands with a resin and compressed to have a density in the range of 1100 — 1200 kg/m3.

Description

Method for jacking up a heavy load, and a filler used in this method
The invention relates to a method for jacking up a heavy load making use of a heavy-duty climbing jack comprising a main body and a stamp, wherein the main body and the stamp are repeatedly moved with respect to each other so as to cyclically have the stamp protrude from the main body and be retracted inside the main body, and further making use of multiple fillers to be placed in a predetermined sequence under the main body and stamp respectively of the climbing jack, which placement of the fillers is executed in concert with the repeated movement of the stamp and the main body of the climbing jack with respect to each other so as to gradually raise the climbing jack from the ground with the fillers underneath said climbing jack.
This method is used in practice for lifting heavy loads from the ground. The heavy-duty climbing jack used for this purpose has a lifting capacity of usually 100, 200 or 500 tons .
The fillers that are used in this method are conventionally made from hardwood taken from rainforests, which represents an appreciable burden to the environment. More and more it is undesirable and no longer considered acceptable that such hardwood is used in the known method for jacking up a heavy load.
At the website https : / ,/www .swssioet. com/news/j ackingup-on-sustainabiiity/ it has been proposed to substitute the hardwooden fillers by bamboo fillers, but practice has shown this is not. as straightforward as it may appear. Bamboo fillers are too soft and not capable to withstand the high forces that occur when heavy loads need to be lifted.
An object of the invention is therefore to provide an alternative for the use of hardwood fillers in the process of lifting a heavy load from the ground.
Also an object of the invention is to provide such an alternative which can be used to replace the known hardwood fillers and which is environmentally friendly, in particular by gaining the benefits of a high take-up of coal dioxide from the environment.
According to the invention a method and heavy-duty filler are proposed in accordance with one or more of the appended claims.
Essentially according to the invention the fillers are provided as a composite of bamboo strands with a resin and arranged to have a density in the range of 1100 - 1200 kg/m3. Using bamboo strands in the composite prevents that hardwood needs to be harvested from the rainforests. Bamboo is a material that is advantageous in terms of its high growth rate and capability to bind large amounts of carbon dioxide. It is not essential which type of resin is used, as long as the resin has gluing properties. Using said composite with a density in the range of 1100 - 1200 kg/m3 provides sufficient strength to be applied in a method for lifting heavy loads.
It is particularly desirable that the composite of the bamboo strands with the resin has a modulus of elasticity as measured in compression parallel to a grain (Ec,90) of the composite of at least 1.6 kN per square millimeter. When this parameter is satisfied the lifting of heavy loads can be executed reliably and securely also with repeated use of the composite fillers.
The composite of bamboo strands with a resin is suitably derived from a process in which the composite is press manufactured by pressing bamboo strands together with resin in a mould and subsequently cured.
The invention is also embodied in a composite as described herein, which is embodied as a composite of bamboo strands with a resin and which is compressed to a density in the range of 1100 - 1200 kg/m3, and which preferably has a modulus of elasticity as measured in compression parallel to a grain (Ec,90) of the composite of at least 1.6 kN per square millimeter .
The invention will hereinafter be further elucidated with reference to the drawing of an exemplary embodiment of an apparatus according to the invention that is not limiting as to the appended claims.
In the drawing:
-figure 1 shows a series of steps of a method according to the invention for lifting a heavy load; and
-figure 2 shows a composite filler that is used in the method of the invention.
Whenever in the figures the same reference numerals are applied, these numerals refer to the same parts.
Figure 1 shows a series of steps numbered 1 - 11, wherein the lifting of a climbing jack 1 is shown. In the first step the climbing jack in general has been referred to with reference 1. The climbing jack 1 comprises a main body 2 and a stamp 3, and in this step 1 the stamp 3 still resides within the main body 2.
In step 2 the stamp 3 is protruding from within the main body 2 so as to lift the main body 2 from the ground. Subsequently in step 3 two composite fillers 4 are provided on the left of the protruding stamp 3, and two composite fillers 5 are provided on the right of the protruding stamp 3. The composite fillers 4, 5 are derived from a process in which the composite 4, 5 is press manufactured by pressing bamboo strands together with resin in a mould and subsequently cured. This also applies to the composite fillers 6 which are mentioned in the following paragraph.
Both the composite fillers 4 on the left and the composite fillers 5 on the right of the stamp 3 have composite strips 4', 5' on top to ensure that after a subsequent step 4 in which the stamp 3 is retracted inside the main body 2 of the climbing jack 1, there is sufficient room below the stamp 3 to enable that in step 5 a series of further composite fillers 6 can be placed underneath the stamp 3 of the climbing jack 1. After this is done in step 6 the stamp 3 is made to protrude again from the main body 2 so as to support the climbing jack 1 on the composite fillers 6 below the stamp 3, which then enables that the composite strips 4' and 5' on top of the composite fillers 4 and 5 on the left and on the right of the stamp 3 can be removed.
Subsequently in steps 7-10 the same operations are performed as shown in steps 3-6 for raising the climbing jack 1 to a next level by bringing in composite fillers at the level of the arrows 7, the difference being that the operations with the composite fillers on the level of the arrows 7 are executed at right angles with reference to the composite fillers previously provided immediately underneath the level of the arrows 7.
Finally in step 11 the climbing jack 1 is made to rest on two layers of composite fillers as provided in the previous steps 1-10.
The composite fillers 4, 5, 6 used in this method of the invention are shown in figure 2. The dimensions of the composite fillers are the same as the hardwooden fillers used in the prior art, notably having a length L of approximately 1 m (1050 mm), and a square cross area W x H of 10 x 10 cm. Further preferable features of the composite filler of the invention are the following:
- the composite filler has a density in the range of 1100 - 1200 kg/m3;
- the composite filler has a modulus of elasticity as measured in compression parallel to a grain (Ec,90) of the composite (of at least 1.6 kN per square millimeter;
- the composite filler is derived from a process in which the filler is press manufactured by pressing bamboo strands together with resin in a mould and subsequently cured.
Although the invention has been discussed in the foregoing with reference to an exemplary embodiment of the method and composite filler of the invention, the invention is not restricted to this particular embodiment which can be varied in many ways without departing from the invention. The discussed exemplary embodiment shall therefore not be used to construe the appended claims strictly in accordance therewith. On the contrary the embodiment is merely intended to explain the wording of the appended claims without intent to limit the claims to this exemplary embodiment. The scope of protection of the invention shall therefore be construed in accordance with the appended claims only, wherein a possible ambiguity in the wording of the claims shall be resolved using this exemplary embodiment.
Aspects of the invention are itemized in the following section .
1. Method for jacking up a heavy load making use of a heavy-duty climbing jack (1) comprising a main body (2) and a stamp (3), wherein the main body (2) and the stamp (3) are repeatedly moved with respect to each other so as to cyclically have the stamp (3) protrude from the main body (2) and be retracted inside the main body (2), and further making use of multiple fillers (4, 5, 6) to be placed in a predetermined sequence under the main body (2) and stamp (3) respectively of the climbing jack (1), which placement of the fillers (4, 5,
6) is executed in concert with the repeated movement of the stamp (3) and the main body (2) of the climbing jack (1) with respect to each other so as to gradually raise the climbing jack (1) from the ground with the fillers underneath said climbing jack (1), characterized in that the fillers are provided as a composite (4, 5, 6) of bamboo strands with a resin and compressed to have a density in the range of 1100 - 1200 kg/m3.
2. Method according to claim 1, characterized in that the composite (4, 5, 6) has a modulus of elasticity as measured in compression parallel to a grain (Ec,90) of the composite (4, 5, 6) of at least 1.6 kN per square millimeter.
3. Method according to claim 1 or 2, characterized in that the composite (4, 5, 6) is derived from a process in which the composite (4, 5, 6) is press manufactured by pressing bamboo strands together with resin in a mould and subsequently cured.
4. Heavy-duty filler, characterized in that the filler is provided as a composite (4, 5, 6) of bamboo strands with a resin and compressed to have a density in the range of 1100 - 1200 kg/m3.
5. Heavy-duty filler according to claim 4, characterized in that the composite (4, 5, 6) has a modulus of elasticity as measured in compression parallel to a grain (Ec,90) of the composite (4, 5, 6) of at least 1.6 kN per square millimeter .
6. Heavy-duty filler according to claim 4 or 5, char acterized in that the composite (4, 5, 6) is derived from a process in which the composite (4, 5, 6) is press manufactured by pressing bamboo strands together with resin in a mould and subsequently cured.

Claims (6)

CONCLUSIESCONCLUSIONS 1. Werkwijze voor het heffen van een zware last onder gebruikmaking van een hoog vermogen klimvijzel (1) omvattende een hoofdlichaam (2) en een stempel (3), waarbij het hoofdlichaam (2) en de stempel (3) herhaald ten opzichte van elkaar bewogen worden teneinde te bewerkstelligen dat op cyclische wijze de stempel (3) zich uitstrekt vanuit het hoofdlichaam (2) en wordt ingetrokken tot in het hoofdlichaam (2), en verder gebruikmakend van meerdere vuldelen (4, 5, 6) om in een voorafbepaalde volgorde onder het hoofdlichaam (2) en de stempel (3) van de klimvijzel (1) te worden geplaatst, welke plaatsing van de vuldelen (4, 5, 6) uitgevoerd wordt afgestemd op de herhaalde beweging van de stempel (3) en het hoofdlichaam (2) van de klimvijzel (1) ten opzichte van elkaar teneinde de klimvijzel (1) geleidelijk vanaf de grond te verheffen met de vuldelen geplaatst onder genoemde klimvijzel (1), met het kenmerk, dat de vuldelen voorzien zijn als een composiet (4, 5, 6) van bamboestrengen en een hars, welke is samengedrukt tot een dichtheid in het bereik van 1100 tot 1200 kg/m3.A method for lifting a heavy load using a high power climbing jack (1) comprising a main body (2) and a punch (3), the main body (2) and the punch (3) repeated with respect to each other moved to cause the punch (3) to cyclically extend from the main body (2) and retract into the main body (2), and further using a plurality of filler parts (4, 5, 6) to form a predetermined in order to be placed under the main body (2) and the punch (3) of the climbing jack (1), which placement of the filler parts (4, 5, 6) is carried out in accordance with the repeated movement of the punch (3) and the main body (2) of the climbing auger (1) relative to each other in order to gradually elevate the climbing auger (1) from the ground with the filler parts placed under said climbing jack (1), characterized in that the filler parts are provided as a composite ( 4, 5, 6) of bamboo strands and a resin s, which is compressed to a density in the range of 1100 to 1200 kg / m3. 2. Werkwijze volgens conclusie 1, met het kenmerk, dat de composiet (4, 5, 6) een elasticiteitsmodulus bezit zoals gemeten tijdens samenpersen evenwijdig aan een vezel (Ec,90) van de composiet (4, 5, 6) van ten minste 1,6 kN per vierkante millimeter.Method according to claim 1, characterized in that the composite (4, 5, 6) has a modulus of elasticity as measured during compression parallel to a fiber (Ec, 90) of the composite (4, 5, 6) of at least 1.6 kN per square millimeter. 3. Werkwijze volgens conclusie 1 of 2, met het kenmerk, dat de composiet (4, 5, 6) verkregen wordt uit een werkwijze in welke de composiet (4, 5, 6) drukvervaardigd wordt door het samenpersen van bamboestrengen samen met een hars in een vorm en daaropvolgend uitgehard.Method according to claim 1 or 2, characterized in that the composite (4, 5, 6) is obtained from a method in which the composite (4, 5, 6) is pressure-produced by compressing bamboo strands together with a resin in a mold and subsequently cured. 4. Zwaarbelastbaar vuldeel, met het kenmerk, dat het vuldeel voorzien is als een composiet (4, 5, 6) van bamboestrengen met een hars en samengedrukt tot een dichtheid in het bereik van 1100 - 1200 kg/m3.Heavy-duty filler part, characterized in that the filler part is provided as a composite (4, 5, 6) of bamboo strands with a resin and compressed to a density in the range of 1100 - 1200 kg / m3. 5. Zwaarbelastbaar vuldeel volgens conclusie 4, met het kenmerk, dat de composiet (4, 5, 6) een elasticiteitsmodulus bezit zoals gemeten tijdens samenpersen evenwijdig aan een vezel (Ec,90) van de composiet (4, 5, 6) van ten minste 1,6 kN per vierkante millimeter.Heavy-duty filler according to claim 4, characterized in that the composite (4, 5, 6) has a modulus of elasticity as measured during compression parallel to a fiber (Ec, 90) of the composite (4, 5, 6) of at least 1.6 kN per square millimeter. 6. Zwaarbelastbaar vuldeel volgens conclusie 4 of 5, met het kenmerk, dat de composiet (4, 5, 6) verkregen wordtHeavy-duty filler according to claim 4 or 5, characterized in that the composite (4, 5, 6) is obtained 5 uit een werkwijze in welke de composiet (4, 5, 6) drukvervaardigd wordt door het samendrukken van bamboestrengen samen met hars in een vorm en daaropvolgend uitgehard.5 from a method in which the composite (4, 5, 6) is pressure-fabricated by compressing bamboo strands together with resin into a mold and subsequently cured.
NL2021580A 2018-09-07 2018-09-07 Method for jacking up a heavy load, and a filler used in this method NL2021580B1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101007420A (en) * 2007-01-26 2007-08-01 南京林业大学 Method for producing artificial hardwood by bamboo material
US20160325530A1 (en) * 2015-05-05 2016-11-10 Resource Fiber LLC Industrial products engineered from processed bamboo or vegetable cane
US20170254066A1 (en) * 2016-03-01 2017-09-07 Northern Star Industries, Inc. Modular Enclosure Transfer System Including Rollers

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101007420A (en) * 2007-01-26 2007-08-01 南京林业大学 Method for producing artificial hardwood by bamboo material
US20160325530A1 (en) * 2015-05-05 2016-11-10 Resource Fiber LLC Industrial products engineered from processed bamboo or vegetable cane
US20170254066A1 (en) * 2016-03-01 2017-09-07 Northern Star Industries, Inc. Modular Enclosure Transfer System Including Rollers

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MAMMOET: "Jacking up on sustainability | Mammoet", 31 December 2017 (2017-12-31), XP055594766, Retrieved from the Internet <URL:https://www.mammoet.com/news/2017/jacking-up-on-sustainability/> [retrieved on 20190606] *

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