A method and system for transporting a geotechnical apparatus

Abstract

A method of transporting a geotechnical apparatus is disclosed. The method comprises coupling a first end of a geotechnical apparatus to a leading support platform via a first coupling unit and coupling a second end of the geotechnical apparatus to a towable support platform via a second coupling unit. The method further comprises transporting the geotechnical apparatus to a desired location. During said transporting, the geotechnical apparatus bridges a distance between the leading support platform and the towable support platform and the leading support platform and the towable support platform each support at least part of the weight of the geotechnical apparatus. Unlocking insights from Geo-Data, the present invention further relates to improvements in sustainability and environmental developments: together we create a safe and liveable world.

Description

A METHOD AND SYSTEM FOR TRANSPORTING A GEOTECHNICAL APPARATUSFIELD

[0001] This disclosure relates to methods and systems for transporting a geotechnical apparatus. More particularly, the disclosure relates to a method and system for coupling a geotechnical apparatus to leading and towable support platforms to enable the geotechnical apparatus to be moved to a geological site of interest more easily, efficiently and safely. Once delivered, the geotechnical apparatus can then perform geotechnical experiments and investigations to collect valuable geodata. Unlocking insights from Geo-Data, the present invention further relates to improvements in sustainability and environmental developments: together we create a safe and liveable world.BACKGROUND

[0002] There is a general and ongoing need for systems and methods for determining sub-surface ground characteristics through the acquisition and analysis of geological data (also referred to as geodata or GeoData). In particular, there is a need for systems and methods that can be used to model the properties of a target volume beneath the surface of the earth to provide information that is useful for infrastructure planning. Determination of sub-surface ground properties during the early planning phase of construction projects reduces uncertainty during the location determination, foundation design, and construction phases of a project. This in turn reduces delays, overspend, and unnecessary use of material resources (e.g., concrete) during construction. A thorough understanding of sub-surface characteristics also enables infrastructure projects to be sited and installed appropriately, thereby improving safety.

[0003] Often, in order to obtain the required geodata, a geotechnical apparatus is required to be moved into position over or nearby the ground volume of interest. Such geotechnical apparatuses may include Cone Penetration Test (CPT) trucks, CPT crawlers, drill rigs, cabins, containers or any other vehicle, vessel or apparatus supporting the acquisition of geodata (e.g., vehicles for transportation of batteries or other components used in electric geotechnical apparatuses). Geotechnical apparatuses are often large and heavy. Some geotechnical apparatuses may not have a drive mechanism. Others may have a drive mechanism but are typically limited to driving at very low speeds, for example less than 10km / h. In both cases, therefore, transportation of the geotechnical apparatus to the location of interest is difficult. Conventional transportation methods for delivering a geotechnical apparatus into position typically involve driving or placing the geotechnical apparatus onto a lowbed or similar trailer or carriage. The lowbed trailer is then attached to a truck and towed to the geological site of interest. On arrival, the geotechnical apparatus drives or is lifted off the lowbed trailer such that it can begin acquiring geodata.

[0004] Unfortunately, transporting geotechnical apparatuses in this manner creates a variety of problems. Firstly, lowbed trailers or similar carriages need to be sturdy and rigid enough to support the weight of the geotechnical apparatuses that rest on them during transit. As a result, lowbed trailers themselves tend to be very heavy, often on the order of 20-40 tonnes or more. Once the weight of the geotechnical apparatus is added, the combined weight of the transportation system may be on the order of 40-60 tonnes. This is too heavy to drive safely on many road surfaces without risk of damaging the road. Transit over certainroad sections, for example over bridges, may also be impossible at such heigh weights. The large weight of the combined trailer and apparatus also means that transportation vehicles typically need to have larger and more numerous wheels, meaning that fuel efficiency is very low during transit. In addition to these weight- related problems, placing the geotechnical apparatus on a lowbed trailer also adds to the height of the overall load, because the lowbed trailer raises the geotechnical apparatus off the ground, in many cases by up to a meter. As a result, the total height of the combined apparatus may exceed four or five meters. This makes the apparatus unsuitable for travelling on many roadways due to the existence of low tunnels, electrical wires or other overhead obstacles. Furthermore, loading and unloading the geotechnical apparatuses onto platforms such as lowbed trailers can also be risky and may lead to accidents or damage if the geotechnical apparatus falls off the lowbed. This may be a risk particularly in case of high winds or uneven ground surface but can also occur due to simple driver error. Additionally, the high weights and dimensions of known transportation systems result in logistical challenges since these weights / dimensions often require special permits for transportation, which may result in significant inefficiencies in the project planning.

[0005] Ultimately, such difficulties in transporting geotechnical apparatuses result in delays and limitations in the acquisition of critical geodata. Often, this results in less efficient acquisition of geodata and a reduction in the amount of geodata that is ultimately available to engineers and planners during construction projects. This in turn leads to less efficient operations, a lack of reliable data and more subsurface uncertainty, which may lead to overparameterization of designs. As a result, the environmental footprint of design work which is dependent on these geodata parameters may increase.

[0006] As can be seen, existing methods and systems for transporting geotechnical apparatuses suffer from significant drawbacks. It would be advantageous to provide systems and methods which address one or more of these problems, in isolation or in combination.SUMMARY

[0007] The present disclosure provides methods and systems which address the above described problems and provide a safer, more efficient mechanism for transporting a geotechnical apparatus to a site of interest. For the reasons described above, this indirectly enables geodata to be obtained more easily, thereby increasing project efficiency and sustainability.

[0008] According to a first aspect of the present disclosure, there is provided a method of transporting a geotechnical apparatus. The method comprises coupling a first end of a geotechnical apparatus to a leading support platform via a first coupling unit and coupling a second end of the geotechnical apparatus to a towable support platform via a second coupling unit. The geotechnical apparatus may incorporate a variety of equipment including, but not limited to, a Cone Penetration Test (CPT) truck, a CPT crawler having treads or tracks, a drill rig, a cabin, a container or any other vehicle, vessel or apparatus supporting the acquisition of geodata. Accordingly, the geotechnical apparatus may comprise one or more of: a cone penetrometer test (CPT) apparatus; a geotechnical drill apparatus; a geotechnical sensing apparatus; or a housing, battery, or component part of any of the above apparatuses. It is noted that the steps described in the method of the present disclosure need not be followed chronologically. That is, the step of coupling a first end of a geotechnical apparatus to a leading support platform via a first coupling unit may occur afterthe step of coupling a second end of the geotechnical apparatus to a towable support platform via a second coupling unit.

[0009] The leading support platform may comprise an undriven platform, such as a dolly or trailer, or it can comprise a transportation vehicle which provides its own locomotion force and is thereby able to transport the geotechnical apparatus, once coupled, to a site of interest in the manner described herein. Examples of transportation vehicles that may be used include a truck or truck cab, a tractor, a large goods vehicle (LGV), or a train. Other suitable transportation vehicles can be used. The transportation vehicle may be manned or unmanned.

[0010] The couplings to each end of the geotechnical apparatus (as well as all other couplings mentioned in the present disclosure) can be any suitable mechanical arrangement capable of coupling (i.e., connecting) the disclosed apparatuses (i.e., geotechnical apparatus, leading support platform and towable support platform) together such that they can be transported to a location of interest. The couplings disclosed herein may be direct or indirect, i.e., there may or may not be an intermediate element. The couplings may be configured to allow forces to be transferred between apparatuses, for example to allow one apparatus to support another.

[0011] Concerning the coupling to an “end” of an apparatus, here and elsewhere the term “end” should not necessarily be interpreted as the most distal or proximal point of the apparatus. Rather, there can be overhang above, under or to the side of the coupling point. The term “end” is therefore to be interpreted broadly as part of the face or portion of an apparatus that faces or is closest to the other apparatus to which it is being coupled.

[0012] The method further comprises transporting the geotechnical apparatus to a desired location, wherein during said transporting the geotechnical apparatus bridges a distance between the leading support platform and the towable support platform and the leading support platform and the towable support platform each support at least part of the weight of the geotechnical apparatus.

[0013] In other words, in the presently disclosed method the geotechnical apparatus is towed in between a leading support platform, such as a transportation vehicle (e.g., a truck), and a towable support platform, such as a dolly or trailer. The leading support platform and the towable support platform are separate components that can be coupled to either end of the geotechnical apparatus. By coupling of the first end of the geotechnical apparatus to the leading support platform and the second end to the towable support platform, a structurally sound configuration for transporting the apparatus is facilitated; effectively, the geotechnical apparatus forms a chassis linking the leading support platform and the towable support platform. By enabling the geotechnical apparatus to serve as a bridging element between the leading support platform and the towable support platform in this way, the need for a lowbed trailer or other similar support mechanism is eliminated. In other words, the geotechnical apparatus is supported by the leading and towable support platforms, obviating the need for any lowbed or other form of trailer to be provided underneath the main body of the geotechnical apparatus. This has various advantages as will be apparent from the above discussion of lowbed trailers and their drawbacks above. In particular, the disclosed method results in a substantial reduction in the overall weight and height of the transportation system as a whole, as well as a reduction in the risk of an accident caused by the geotechnical apparatus falling off the lowbed.

[0014] In an implementation, the geotechnical apparatus is first coupled to the towable support platform. In such an implementation, it is possible to provide the towable support platform with an automatic brake system to prevent the system from rolling away if it is not coupled to anything (either the support platformor the geotechnical apparatus). This enhances safety, as the towable support platform cannot roll away if it is, for example, provided on a slanted surface such as a hill.

[0015] In some implementations, the geotechnical apparatus is suspended above the ground between the leading support platform and the towable support platform during said transporting of the geotechnical apparatus. In the context of the present disclosure, the term “suspended” refers to the state of the geotechnical apparatus being unsupported for at least a certain distance along its length. “Suspended” does not necessarily mean that no part of the geotechnical apparatus touches the ground, however. For example, a small part of the device (e.g., a stabilising wheel) may remain in contact with the ground. Hence, the term "suspended" should be interpreted as encompassing "partially suspended" or "mostly suspended". In some cases, the geotechnical apparatus may be wholly suspended such that no part of the geotechnical apparatus is in contact with the ground. By suspending the geotechnical apparatus above the ground during transit, the potential for damage to the apparatus due to uneven or harsh terrain is significantly reduced. The disclosed method thereby enhances the longevity and operational readiness of the apparatus, especially when being transported over long distances or through challenging environments.

[0016] Further, the versatility of the apparatuses that can be transported is enhanced. The suspension of the geotechnical apparatus above the ground enables transportation of geotechnical apparatuses that may not have their own mobility mechanisms such as wheels. In such cases, by integrating the apparatus into the overall transportation system as effectively part of the chassis, the method overcomes limitations related to the apparatus's inherent mobility capabilities. For geotechnical apparatuses that do possess drive mechanisms such as wheels or tracks, this suspension arrangement allows for transportation at speeds far greater than what the apparatus might achieve independently. This increased speed efficiency leads to a reduction in the overall time required for transportation, which can be a critical advantage in time-sensitive geotechnical operations or projects.

[0017] As noted above, at least a portion of the geotechnical apparatus' weight is supported by the leading and towable support platforms, thereby positioning the geotechnical apparatus at least partly between the platforms. In an implementation, the geotechnical apparatus’ weight is fully supported by the combination of the leading and towable support platforms. In another embodiment, the geotechnical apparatus may comprise a component which engages with the ground to carry a portion of the weight, such as a wheel. The geotechnical apparatus is thus arranged to transfer a towing force from the leading support platform to the towable support platform. The geotechnical apparatus may advantageously comprise a chassis having a stiffness which is sufficiently high to withstand such partial or whole suspension between the leading and towable support platforms.

[0018] In some implementations, the geotechnical apparatus comprises a drive mechanism. The term “drive mechanism” refers to a component or a set of components of the geotechnical apparatus responsible for facilitating its movement over terrain. Suitable drive mechanisms include, but are not limited to, one or more wheels, tracks, skids, etc. These mechanisms can be passive, merely supporting and guiding the vehicle in response to external forces, or they can be actively driven, contributing directly to the vehicle's propulsion. Such active drive mechanisms can be powered by various types of engines, with an electric engine being the preferred implementation. Other possible powering methods include, but are not limited to, a fossil fuel engine or a hydrogen engine.

[0019] In some implementations, the method further comprises raising the drive mechanism of the geotechnical apparatus off the ground following coupling of the geotechnical apparatus to the leading support platform and the towable support platform.

[0020] Raising the drive mechanism of the geotechnical apparatus may comprise transferring the weight of the geotechnical apparatus from the ground onto the leading support platform and the towable support platform.

[0021] In some implementations, the method further comprises lowering the drive mechanism of the geotechnical apparatus onto the ground prior to decoupling of the geotechnical apparatus from the leading support platform and / or the towable support platform.

[0022] Lowering the drive mechanism of the geotechnical apparatus may comprise transferring the weight of the geotechnical apparatus from the leading support platform and the towable support platform to the ground.

[0023] As noted above, an advantage of raising the drive mechanism during transit is that it allows the geotechnical apparatus to be transported at a faster speed than it can achieve independently. Most geotechnical apparatuses have limited mobility and can only move slowly, such as at a speed of 10 km / h or less. Coupling the geotechnical apparatus to the support platforms and raising the drive mechanism thus enables the geotechnical apparatus to be transported at higher speeds.

[0024] The method may further comprise decoupling the geotechnical apparatus from the leading support platform. This can be achieved by decoupling the geotechnical apparatus from the first coupling unit and / or by decoupling the first coupling unit from the leading support platform. This decoupling may be performed on arrival at the geological site of interest. After decoupling, the leading support platform can be moved away to perform other functions, such as collecting other apparatuses. The first coupling unit can remain attached to the leading support platform or to the geotechnical apparatus, as desired.

[0025] The method may further comprise decoupling the geotechnical apparatus from the towable support platform. This can be achieved by decoupling the geotechnical apparatus from the second coupling unit and / or by decoupling the second coupling unit from the towable support platform. This decoupling may similarly be performed on arrival at the geological site of interest. Alter decoupling, the towable support platform can be moved away to perform other functions, such as collecting other apparatuses. The second coupling unit can similarly remain attached to the towable support platform orto the geotechnical apparatus, as desired.

[0026] The method may further comprise, after decoupling the geotechnical apparatus from the leading support platform and from the towable support platform, coupling the leading support platform to the towable support platform. This coupling may be via the first and / or second coupling unit. In other words, the leading support platform can collect the decoupled towable support platform and can tow it away. The leading support platform and the towable support platform can then go and collect another geotechnical apparatus, for example. Advantageously, the same coupling unit or coupling interface is used to couple the leading platform to the towable support platform as was used to couple the leading platform to the geotechnical apparatus. Hence, the same connecting device (e.g., a gooseneck drawbar) can be used to tow both the geotechnical apparatus and the towable support platform. Efficient and simple logistics are thereby enabled. In an alternative implementation, the towable support platform and the leading support platform may be coupled via another appropriate means, such as a towing cable, a towing beam, or the like. In an implementation, the towable support platform may be received on and supported by the leading supportplatform. In some implementations, the leading support platform comprises the first coupling unit. In some implementations, the towable support platform comprises the second coupling unit. In some implementations, the first and second coupling units can be coupled together in order to couple the leading support platform to the towable support platform.

[0027] As described in more detail below, coupling and decoupling of one or more of the leading support platform, geotechnical apparatus and towable support platform to another apparatus may advantageously be performed manually, without requiring the use of heavy machinery. In particular, the first and / or second coupling units may be configured to be coupled and / or decoupled using a pulling or pushing force that is readily achievable by an average human operator, for example 1000N or less, preferably of 500N or less. This is highly beneficial because it means the apparatuses of the transportation system (i.e., the support platforms and the geotechnical apparatus) can be coupled and decoupled from one another easily and quickly, without the need for any heavy machinery. This is in contrast to traditional towable elements such as lowbed trailers which are not designed to be frequently coupled and uncoupled and therefore generally require heavy machinery to (de)couple.

[0028] In some implementations, manual coupling and decoupling is enabled by providing a locking element that can be manually manipulated to couple and decouple the elements of the transportation system. In one such implementation, the first and / or second coupling unit may comprise a locking element, wherein the locking element is movable from an unlocked position to a locked position to secure the respective first and / or second coupling unit to the geotechnical apparatus, towable support platform, or leading support platform. The locking element may also be movable from a locked position to an unlocked position to release the respective first and / or second coupling unit from the geotechnical apparatus, towable support platform, or leading support platform. Advantageously, the locking element may be manually movable between the unlocked and locked positions. In other words, the locking element may be readily moved between the locked and unlocked positions using a pulling or pushing force that is readily achievable by an average human operator, for example 500N or less. Put another way, the locking element may have a maximum actuation force of 500N. The locking element may have a weight of no more than 40kg such that it can be readily moved in and out of the locked position by a human operator. The locking element may similarly be no more than one meter long such that it can be readily moved in and out of the locked position by a human operator. The locking element may comprise a handle or other engagement unit that a user can manually interact with (for example by grabbing or holding onto), to facilitate movement of the locking element between the locked and unlocked positions. The locking element may be operable to be removed without any machinery.

[0029] In some implementations, one or more locking element is configured to be in contact with the ground when in the unlocked position. This advantageously provides additional support to the apparatus to which the locking element is attached, because the locking element provides an additional contact point between the apparatus and the ground. This configuration has a secondary benefit in that the locking element must be moved into the ground-contacting position before the apparatus can be uncoupled, meaning the apparatus will always be stabilised before it is unhooked.

[0030] According to another aspect of the present disclosure, there is provided a transportation system for transporting a geotechnical apparatus. The transportation system comprises a leading support platform, arranged to be coupled to a first end of a geotechnical apparatus, and a towable support platform, arranged to be coupled to a second end of the geotechnical apparatus. The transportation system further comprisesa first coupling unit arranged to couple the first end of the geotechnical apparatus to the leading support platform and a second coupling unit arranged to couple the second end of the geotechnical apparatus to the towable support platform. The first and second coupling units are arranged to couple the geotechnical apparatus to the respective leading and towable support platforms such that the geotechnical apparatus bridges a distance between the leading support platform and the towable support platform and the leading support platform and the towable support platform each support at least part of the weight of the geotechnical apparatus.

[0031] As described with respect to the method disclosed above, this transportation system provides a mechanism for transporting a geotechnical apparatus safely and efficiently without the need for a lowbed trailer or other similar carriage forthe geotechnical apparatus. Such a trailer or carriage is rendered obsolete by the disclosed transportation system and method because the geotechnical apparatus bridges and is supported by the leading and towable support platforms such that it effectively forms a chassis between the two platforms and is able to be transported without an underlying trailer.

[0032] The transportation system may be capable of transporting the geotechnical apparatus on various terrains including, but not limited to, roads, railways, rough terrains (off-road), tidal zones, or even offshore for transportation on vessels.

[0033] As noted above, the first coupling unit may be further arranged for coupling the leading support platform to the towable support platform. This advantageously means that the same coupling unit (e.g., a gooseneck drawbar) can connect the leading support platform to both the geotechnical device and the towable support platform. This allows, for example, the leading support platform to easily collect and tow the support platform away once the geotechnical apparatus has been delivered, as noted above. The geotechnical apparatus and towable support platform may therefore advantageously both comprise a coupling interface configured to couple to the first coupling unit, i.e., one to which the first coupling unit can readily couple. In one example, the leading support platform comprises the first coupling unit and the towable support platform comprises the second coupling unit. Advantageously, therefore, in some implementations the first and second coupling units are operable to be coupled together to facilitate coupling of the leading support platform to the towable support platform, as also noted above.

[0034] The transportation system described above comprises a leading and a towable support platform, as well as two coupling units. These elements provide a self-contained transportation system that is able, in use, to receive or couple to a geotechnical apparatus in order to transport the geotechnical apparatus. In some implementations, the transportation system also comprises the geotechnical apparatus itself.

[0035] Advantageously, in some implementations the total weight of the transportation system is less than 40 tonnes. This ensures that the transportation system can move on normal roads with minimal risk of damaging the roads.

[0036] Advantageously, in some implementations the total height of the transportation system is less than 4 meters. This ensures that the transportation system can move on normal roads without risk of colliding with overhead obstacles.

[0037] In the above method and system, the first and second coupling units may be integral parts of the respective support platforms or may be independent entities couplable to those support platforms. In other implementations, the first and second coupling units may be part (integral or otherwise) of the geotechnical apparatus. To that end, according to yet a further aspect there is provided a geotechnical apparatus comprising one or more geotechnical measurement devices; a first end comprising a first coupling unitarranged to be coupled to a leading support platform; and a second end comprising a second coupling unit arranged to be coupled to a towable support platform. As in the above disclosed method and transportation system, the first and second coupling units are arranged to couple the geotechnical apparatus to the respective leading and towable support platforms such that the geotechnical apparatus bridges a distance between the leading support platform and the towable support platform and the leading support platform and the towable support platform each support at least part of the weight of the geotechnical apparatus.

[0038] Accordingly, the disclosed geotechnical apparatus according to this aspect provides similar benefits to the method and transportation system disclosed above, namely of enabling the geotechnical apparatus to be easily and safely transported without need of a lowbed trailer or similar support.

[0039] The geotechnical apparatus may have a weight of at least 10 tonnes, optionally of at least 15 tonnes, further optionally of at least 18 tonnes, still further optionally of at least 20 tonnes. The present invention provides a solution to the fact that in various circumstances the weight of the total transportation system (geotechnical apparatus plus all support platforms and coupling units) must weigh no more than 40 tonnes in transit without risking damage to the road surface on which they are travelling.

[0040] The geotechnical apparatus may have a height of between about 1 and 4 meters, optionally of between about 2 and 4 meters, further optionally of between about 3 and 4 meters. The present invention provides a solution to the fact that in various circumstances the height of the total transportation system (geotechnical apparatus plus all support platforms and coupling units) must be no more than 4 meters in transit without risking collision with overhead obstacles (e.g., cables, tunnels etc.) during transit.

[0041] The geotechnical apparatus may have a length of between about 2 and 13 meters, optionally of between about 3 and 8 meters, further optionally of between about 4 and 6 meters. By transporting the geotechnical apparatus in the claimed manner, the total length of the transportation system can be reduced compared to using a lowbed trailer which typically extends beyond the length of the item which it is transporting, resulting in increased length which makes the transportation system difficult to manoeuvre.

[0042] The first and second coupling units may comprise any suitable coupling mechanism, including but not limited to protruding latching hooks, latching bars, locking blocks, magnetic couplers, ratchet-based couplers, friction-based couplers and any other type of coupling device.

[0043] In some advantageous implementations, at least the first coupling unit comprises a gooseneck drawbar. This is a known type of coupling device that is particularly suitable for use in coupling the apparatuses of the present disclosure. In some implementations, the gooseneck drawbar comprises a first portion configured for attachment to the geotechnical apparatus. This portion may be substantially vertical so as to extend downward and couple to a coupling interface provided on the geotechnical apparatus or on the towable support platform. In some implementations, the gooseneck drawbar comprises a second portion configured for attachment to the leading support platform. This portion may be substantially horizontal so as to extend horizontally and couple to a coupling interface provided on the leading support platform. The first and second portions may be integral (i.e., part of a single, whole piece) or may be separate and coupled together in any suitable manner.

[0044] The gooseneck drawbar may thus provide a useful coupling unit for coupling the leading support platform to either the geotechnical apparatus or the towable support platform. Advantageously, the gooseneck drawbar may comprise one or more retractable supports configured to be lowered into contact with the leading support platform prior to decoupling of the gooseneck drawbar from the geotechnical apparatus or towable support platform. These one or more retractable supports provide a counter-leverforce against the weight of the second portion of the gooseneck drawbar. This avoids the weight of the gooseneck drawbar tipping the leading support platform once it has been disconnected from the geotechnical apparatus or towable support platform. The one or more retractable supports can be raised again after (re)coupling to the geotechnical apparatus or towable support platform. The one or more retractable supports may perform a secondary function of raising the gooseneck drawbar to unhook its coupling interface from the coupling interface of the geotechnical apparatus or towable support platform. The one or more retractable supports may comprise one or more pistons or other similar suitable elements able to retract and extend as required. The one or more retractable supports may form part of the second portion of the gooseneck drawbar.BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to describe the manner in which the above-recited and other advantages and features of the disclosure can be obtained, a more particular description of the principles briefly described above will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Understanding that these drawings depict only exemplary implementations of the disclosure and are therefore not to be considered to be limiting of its scope, the principles herein are described and explained with additional specificity and detail by way of example to illustrate aspects of the disclosure and with reference to the accompanying drawings, in which:

[0046] Figures 1 and 2 show an example transportation system fortransporting a geotechnical apparatus according to the present disclosure;

[0047] Figure 3 represents a close-up of the section marked III in Figure 2, and shows a coupling interface between a leading support platform and a geotechnical apparatus in more detail and in partial cross-section;

[0048] Figure 4 shows an example towable support platform for use in the transportation system of the present disclosure;

[0049] Figure 5 shows a cross-section of the coupling between the towable support platform and the geotechnical apparatus according to an example of the present disclosure;

[0050] Figure 6 shows first and second locking elements that can be used to secure the couplings of the apparatuses in the present disclosure;

[0051] Figure 7 shows a method of transporting a geotechnical apparatus according to the present disclosure; and

[0052] Figures 8-11 show various configurations and couplings that may be provided through performance of the disclosed method.DETAILED DESCRIPTION

[0053] The following is a description of certain embodiments of the invention, given by way of example only and with reference to the drawings.

[0054] Various implementations of the disclosure are discussed in detail below. While specific implementations are discussed, it should be understood that this is done for illustration purposes only. A person skilled in the relevant art will recognize that other components and configurations may be usedwithout parting from the spirit and scope of the disclosure. Thus, the following description and drawings are illustrative and are not to be construed as limiting. Numerous specific details are described to provide a thorough understanding of the disclosure. However, in certain instances, well-known or conventional details are not described in order to avoid obscuring the description. A reference to an implementation in the present disclosure can be a reference to the same implementation or any other implementation. Such references thus relate to at least one of the implementations herein.

[0055] The terms used in this specification generally have their ordinary meanings in the art, within the context of the disclosure, and in the specific context where each term is used. Alternative language and synonyms may be used for any one or more of the terms discussed herein, and no special significance should be placed upon whether or not a term is elaborated or discussed herein. In some cases, synonyms for certain terms are provided. A recital of one or more synonyms does not exclude the use of other synonyms. The use of examples anywhere in this specification including examples of any terms discussed herein is illustrative only and is not intended to further limit the scope and meaning of the disclosure or of any example term. Likewise, the disclosure is not limited to various implementations given in this specification.

[0056] The present disclosure describes improved systems and methods for transporting a geotechnical apparatus. As noted above, the disclosed method and systems involve coupling a first end of a geotechnical apparatus to a leading support platform via a first coupling unit and coupling a second end of the geotechnical apparatus to a towable support platform via a second coupling unit. The geotechnical apparatus is then transported to a desired location. During transit, the geotechnical apparatus bridges a distance between the leading support platform and the towable support platform and both the leading support platform and the towable support platform support at least part of the weight of the geotechnical apparatus. As a result of this arrangement, a structurally sound configuration for transporting the geotechnical apparatus is facilitated. By enabling the geotechnical apparatus to serve as a bridging element between the leading support platform and the towable support platform, the need for a lowbed or other similar support trailer underneath the main body of the geotechnical apparatus itself is eliminated. This results in a substantial reduction in the overall weight and height of the transportation system, as well as avoiding risks associated with driving or placing the geotechnical apparatus onto and off the lowbed trailer.

[0057] Turning now to Figure 1 , a transportation system 100 is shown. The same transportation system 100 is shown from a lower angle in Figure 2. The transportation system comprises a leading support platform 102. In the present example, the leading support platform 102 comprises a transportation vehicle. In this example, the transportation vehicle is a truck cab. It will be appreciated, however, that the leading support platform 102 can be any form of platform suitable for coupling to and transporting a geotechnical apparatus. For example, in some implementations leading support platform 102 may comprise a tractor, another large goods vehicle (LGV), or a train.

[0058] Transportation system 100 also comprises a geotechnical apparatus 104. In this example, geotechnical apparatus 104 comprises a Cone Penetration Test (OPT) crawler. Accordingly, in this example geotechnical apparatus 104 comprises a housing containing one or more geotechnical measurement devices, one of which comprises a cone penetrometer configured for inserting into the ground below the geotechnical apparatus 104 so as to obtain geodata. In this example, geotechnical apparatus 104 also has its own drive mechanism 106, in this case a pair of crawler tracks.

[0059] Transportation system 100 also comprises a towable support platform 108. In this example, towable support platform 108 comprises a two-axle towable trailer, also known as a dolly.

[0060] Transportation system 100 further comprises a first coupling unit 110 arranged to couple a first end of the geotechnical apparatus 104 to the leading support platform 102. As can be seen, in this example first coupling unit 110 comprises a gooseneck drawbar. The first coupling unit 110 comprises a first, substantially vertical, portion 110a coupled to the geotechnical apparatus 104 and a second, substantially horizontal, portion 110b coupled to the leading support platform 102. The second portion 110b comprises two retractable supports 110c configured to be lowered into contact with the flatbed portion of the leading support platform 102 prior to decoupling of the gooseneck drawbar from the geotechnical apparatus. The retractable supports 110c in the example of Figure 1 are hydraulic pistons and are shown in their retracted state in Figures 1 and 2 such that only the lowermost endcaps are visible. Lowering of the pistons into contact with the truck 102 prior to decoupling of the geotechnical apparatus 104 provides a counter lever force against the weight of the first coupling unit 110, and in particular first portion 110a which overhangs the truck 102. This counter lever force avoids the weight of the first portion 110a of the first coupling unit 110 from tipping or destabilising the leading support platform 102 after decoupling from geotechnical apparatus.

[0061] Transportation system 100 further comprises a second coupling unit 112 arranged to couple a second end of the geotechnical apparatus 104 to the towable support platform 108. In this example second coupling unit 112 comprises two protruding hooks formed integrally with towable support platform 108. These hooks can couple onto a coupling interface of the geotechnical apparatus 104, as described in more detail below. Advantageously, in this implementation second coupling unit 112 is also configured to couple to the first coupling unit 110 provided on the leading support platform 102. In other words, in this implementation coupling interfaces provided on both the towable support platform 108 and the geotechnical apparatus 104 are both configured to couple with the first coupling unit 110 of leading support platform 102. This enables the leading support platform 102 to tow away the towable support platform 108 after both platforms have been decoupled from the geotechnical apparatus 104, as will be described in further detail below.

[0062] As can be seen from Figures 1 and 2, the transportation system 100 is configured such that the first 110 and second 112 coupling units couple the geotechnical apparatus 104 to the respective leading 102 and towable 108 support platforms. This results in the geotechnical apparatus 104 bridging a distance between the leading support platform 102 and the towable support platform 108. The leading support platform 102 and the towable support platform 108 each also support at least part of the weight of the geotechnical apparatus 104. Through this arrangement, the geotechnical apparatus 104 effectively becomes part of the chassis of a unitary transportation system 100 and can thus be transported to a target location as part of the transportation system 100 without need for any lowbed trailer or similar support platform to be placed underneath the main body of the geotechnical apparatus 104. This has the advantages discussed above as a result of obviating the need for such a lowbed trailer. As a result, the transportation system 100 may weigh less than 40 tonnes in total and / or be less than 4 meters high. Both of these factors makes it far easier to transport geotechnical apparatus 104 to a geological site of interest without damaging the road surface or impacting overhead obstacles.

[0063] In Figures 1 and 2, geotechnical apparatus 104 is shown with its drive mechanism 106 in the raised state, such that the geotechnical apparatus 104 is suspended above the ground between the leadingsupport platform and the towable support platform. As a result, all of the weight of the geotechnical apparatus 104 is transferred from the ground onto the leading support platform 102 and the towable support platform 108. In this configuration, the transportation system 100 is not limited by the top speed of geotechnical apparatus 104 but can instead travel at a much greater speed. On arrival at the geological site of interest, and prior to decoupling of the geotechnical apparatus 104 from the leading support platform 102 and towable support platform 108, the drive mechanism 106 can be lowered into contact with the ground so as to transfer at least some of the weight of the geotechnical apparatus from the leading support platform 102 and the towable support platform 108 to the ground. This enables the geotechnical apparatus 104 to be safely decoupled from the leading support platform 102 and / or towable support platform 108, as discussed in further detail below. It will be appreciated that in some implementations, passive (i.e., undriven) stabilising wheels or other elements of the geotechnical apparatus 104 may remain in contact with the ground to provide stability even while the main drive mechanism 106 is raised. Hence, references to “suspended” do not necessarily mean wholly suspended but also encapsulate partially suspended arrangements.

[0064] Advantageously, in the present implementation shown in Figures 1 and 2 both the first coupling unit 110 and second coupling unit 112 can be manually decoupled from geotechnical apparatus 104. For example, the coupling units may be engaged and disengaged using pulling, pushing or rotating forces that are readily achievable by an average human operator. For example, a pulling or pushing force of 500N or less may be required to couple or decouple the first and second coupling unit from geotechnical apparatus 104. This means that a human operator can couple and decouple the leading support platform 102 and towable support platform 108 as needed without requiring heavy machinery. This is very beneficial when the geotechnical apparatus 104 is being delivered to or collected from remote locations where the use of heavy machinery or power tools could be prohibitive.

[0065] Coupling mechanisms that permit manual coupling and decoupling of the apparatuses of transportation system 100 will now be described in further detail with reference to Figures 3 to 6. First, coupling of the geotechnical apparatus 104 to the leading support platform 102 will be described with reference to Figure 3. Following this, coupling of the geotechnical apparatus 104 to the towable support platform 108 will be described with reference to Figures 4 to 6. Advantageously, both couplings utilise similar coupling mechanisms and coupling interfaces as will now be explained.

[0066] Turning first to Figure 3, this figure shows a closeup detail of the portion marked III in Figure 2. An example coupling between the first coupling unit 110 of the leading support platform 102 and a coupling interface of the geotechnical apparatus 104 is shown. In this example the coupling comprises two coupling points, the nearest of which is shown in cross-section for ease of understanding. The interior of coupling unit 110 is also shown in cross-section, to reveal its inner structure. To improve visibility, the drive mechanism 106 of geotechnical apparatus 104 is not shown in the closeup of Figure 3.

[0067] As can be seen, geotechnical apparatus 104 comprises two coupling interfaces 302, which in this example comprise protruding hooks. The coupling interfaces 302 are configured to engage with corresponding coupling interfaces 304 provided at respective ends of the first portion 110a of the first coupling unit 110 of leading support platform 102. In particular, the coupling hooks are configured to be received by corresponding openings in the coupling interfaces 304 of the first coupling unit 110. Through relative vertical motion of the coupling hooks 302 and the coupling interfaces 304, the coupling hooks 302 can then be made to latch or hook onto the coupling interfaces so as to resist disengagement, therebyproviding the desired coupling force. The relative vertical movement of the interfaces to create this coupling can, in this example, be created by raising the coupling interfaces 304, for example through operation of a hydraulic piston of the first coupling unit 110. Alternatively, or additionally, the relative vertical movement can be created by lowering the coupling hooks 302, for example by lowering of the geotechnical apparatus 104 chassis relative to its drive mechanism 106. It will be appreciated that in other examples, different types of coupling interfaces can be used and the coupling may be achieved by moving the respective interfaces in a different direction.

[0068] The coupling arrangement in this example also comprises locking elements 306, which may be part of the geotechnical apparatus 104, leading support platform 102, or may be independent pieces. Once the coupling hooks 302 have latched onto the coupling interfaces 304 of the first coupling unit 110, the locking elements 306 can be inserted above or below each respective coupling hook 302 to prevent any further relative vertical movement ofthe two coupling interfaces. This prevents the coupling hooks 302 from unlatching from the coupling interfaces 304, thereby securing the geotechnical apparatus 104 to the leading support platform 102.

[0069] Later, when it is desired to uncouple the geotechnical apparatus 104 from the first coupling unit 110, locking elements 306 can be manually disengaged, in this example by pulling the locking elements 306 outwards until a gap is formed and the locking elements 306 are no longer preventing relative vertical movement between the respective coupling interfaces 302, 304. Once the locking elements 306 have been moved to this unlocked position, coupling interfaces 302, 304 can be uncoupled. This may be achieved, in the present example, using a reverse of the procedure that was used to couple the interfaces. In particular, decoupling may be achieved by lowering coupling interfaces 304 and / or raising coupling interfaces 302 such that the interfaces are disengaged. Once there is sufficient vertical clearance between the coupling interfaces 302, 304 the coupling interfaces 302 of the geotechnical apparatus 104 can be retracted from the coupling interfaces 304 of the first coupling unit 110 so as to uncouple the geotechnical apparatus 104 from the leading support platform 102.

[0070] As can be seen, therefore, each locking element 306 is manually movable between: an unlocked position, in which the locking element 306 does not block vertical relative movement of the respective coupling interfaces 302, 304; and a locked position, in which the locking element 306 does block vertical relative movement so as to prevent decoupling. Each locking element 306 is in this example a manually insertable and removable block, for example formed of metal or another robust material that can withstand the forces applied to it by interfaces 302, 304. The locking elements 306 may remain attached to the first coupling unit 110 or geotechnical apparatus 104 while in the unlocked position, or as noted may be independent units that can be removed and stored until they are needed for recoupling.

[0071] It will be appreciated that the described arrangement is only one possible implementation of the coupling interface and locking elements 306. Any suitable arrangement can be used to permit coupling and decoupling (preferably manual) of the apparatuses. There may be multiple coupling interfaces between each apparatus. For example, in the present implementation there are two hooks on the geotechnical apparatus 104 to which two corresponding coupling interfaces of the first coupling unit 110 can be coupled. In other examples, there may be only one coupling interface, or more than two coupling interfaces, on each apparatus.

[0072] Turning next to Figures 4 to 6, similar principles and features can be used to couple and decouple the towable support platform 108 to and from the other end of geotechnical apparatus 104.

[0073] Turning first to Figure 4, towable support platform 108 is shown in further detail. Second coupling unit 112 can be seen and comprises of two protruding hooks. These hooks have the same form and function as the protruding hooks which provided coupling interfaces 302 of the geotechnical apparatus 104, just described in Figure 3. This is beneficial, because it means the same coupling interfaces 304 of the first coupling unit 110 can couple to both the geotechnical apparatus 104 and the towable support platform 108, as will be described in further detail below.

[0074] The coupling arrangement between the geotechnical apparatus 104 and the towable support platform 108 is shown in more detail in Figure 5, which shows the coupling in cross-section. As can be seen, each hook of second coupling unit 112 hooks over and latches into a corresponding coupling interface 504 of the geotechnical apparatus 104. Because Figure 5 shows a side-on cross-section, only one hook of second coupling unit 112 and one coupling interface 504 are visible.

[0075] A locking element 506 is inserted at each coupling interface and prevents any further relative vertical movement of the second coupling unit 112 and the coupling interfaces 506, so that the second coupling unit 112 cannot be disengaged from coupling interfaces 504. This mirrors the form and functionality described above in respect of Figure 3 and the coupling between the geotechnical apparatus 104 and the leading support platform 102. In particular, each locking element 506 provides the same function as locking elements 306, coupling interfaces 504 mirror the function and form of coupling interfaces 304, and the protruding hooks of second coupling unit 112 mirror the function and form of the protruding hooks of coupling interfaces 302. From this, it will be apparent that the coupling of interfaces 504 to coupling unit 112 mirrors the process for coupling of coupling interfaces 304 to coupling interfaces 302.

[0076] In addition to the locking elements 306, 506 described above, one or more additional or alternative forms of locking element may be provided. Figures 4 to 6 show a second form of locking element 406 which further locks the second coupling unit 112 to geotechnical apparatus 104 by also preventing relative vertical movement between the two coupling interfaces 112, 504. In that sense, locking elements 406 provide the same function as locking elements 306 and 506. However, locking elements 406 provide an additional benefit in that they are configured to be placed in contact with the ground when in the unlocked position, whilst remaining in contact with the towable support platform 108. In one such example locking elements 406 can be manually pulled out and then rotated by 90 degrees to form stabilising stanchions on either side of towable support platform 108. This acts to prevent the towable support platform 108 from tipping due to the weight of second coupling unit 112 (in particular the protruding hooks), once the towable support platform 108 has been decoupled from geotechnical apparatus 104. Advantageously, because locking elements 406 must be removed prior to decoupling of towable support platform 108 from geotechnical apparatus 104, it can be ensured that towable support platform 108 is always stabilised prior to decoupling. This avoids accidents due to accidental tipping of the towable support platform 108 after decoupling. It will be appreciated that similar locking elements can be provided as part of the leading support platform 102 (or as part of first coupling unit 110) such that a similar benefit is provided when decoupling the leading support platform 102 from the geotechnical apparatus 104.

[0077] As noted above, all the locking elements provided in the transportation system 100 are preferably manually movable between their locked and unlocked positions. As can be seen from Figure 6, locking elements 406 and 506 preferably have handles to enable them to be easily retracted and inserted (i.e., moved between the locked and unlocked positions) as needed. The locking elements 306 described with reference to the first coupling unit 110 in Figure 3 also have handles for similar reasons.

[0078] With the above-described structure of the transportation system 100 in mind, methods of using the transportation system 100 to transport a geotechnical apparatus more efficiently and safely to a target location will now be described with reference to Figures 7-11 .

[0079] Turning to Figure 7, a method of transporting a geotechnical apparatus is shown. The method may in particular provide a method for using the above-described transportation system 100 to transport geotechnical apparatus 104.

[0080] The method begins, at step 702, by coupling a first end of a geotechnical apparatus, such as geotechnical apparatus 104, to a leading support platform, such as leading support platform 102. This coupling is provided via a first coupling unit, for example first coupling unit 110. The coupling may take the form described in reference to Figure 3 above. Step 702 may therefore involve engaging coupling interfaces, such as interfaces 302 and 304, with one another. Following this, a human operator may manually move a locking element, such as one of locking elements 306, from an unlocked (e.g., retracted) position to a locked (e.g., inserted) position to secure the coupling in the manner described above.

[0081] At step 704, the method comprises coupling a second end of the geotechnical apparatus 104 to a towable support platform, for example towable support platform 108. This coupling is provided via a second coupling unit, for example second coupling unit 112. The coupling may take the form described in reference to Figures 4-6 above. Step 704 may therefore involve engaging coupling interfaces, such as coupling unit 112 and coupling interface 504, with one another. Following this, a human operator may manually move a locking element, such as one of locking elements 406 and / or 506, from an unlocked (e.g., retracted) position to a locked (e.g., inserted) position to secure the coupling in the manner described above.

[0082] At optional step 706, the method comprises raising the drive mechanism, for example drive mechanism 106, of the geotechnical apparatus 104 following coupling of the geotechnical apparatus 104 to the leading support platform 102 and the towable support platform 108. In doing so, the weight of the geotechnical apparatus 104 is at least partially transferred from the ground onto the leading support platform 102 and the towable support platform 108. By at least partially suspending the geotechnical apparatus 104 in this manner and removing contact between the drive mechanism 106 and the ground, the geotechnical apparatus 104 can be transported at a higher speed than it would naturally be able to drive itself.

[0083] At step 708, the method comprises transporting the geotechnical apparatus 104 to a desired location, for example a geological site of interest where it is desired to use geotechnical apparatus 104 to obtain geodata. By using the disclosed system and method, the geotechnical apparatus 104 bridges a distance between the leading support platform 102 and the towable support platform 108 during transit. The leading support platform 102 and the towable support platform 108 each also support at least part of the weight of the geotechnical apparatus 104. This arrangement provides a suitably stable and rigid connection between the apparatuses such that the geotechnical apparatus 104 can be transported safely and efficiently. This arrangement avoids any need for a lowbed trailer or similar support to be provided under the main body of the geotechnical apparatus 104, and the geotechnical apparatus 104 does not need to drive onto or off any lowbed trailer.

[0084] Following arrival at the geological site of interest, the disclosed transportation system 100 permits of a variety of different coupling and decoupling possibilities, thereby providing a versatile and flexible system. Some of these potential arrangements will now be described with reference to the remaining steps of Figure 7, as well as Figures 8 to 11 .

[0085] At optional step 710, upon arrival at the geological site of interest the method may comprise lowering the drive mechanism 106 of the geotechnical apparatus 104 priorto decoupling of the geotechnical apparatus 104 from the leading support platform 102 and / orthe towable support platform 108. This lowering may comprise transferring the weight of the geotechnical apparatus 104 from the leading support platform 102 and the towable support platform 108 to the ground. The transportation system 100 at this stage, having arrived at the geological site of interest and lowered its drive mechanism 106, is shown in Figure 8.

[0086] The geotechnical apparatus 104 may at this stage proceed to obtain geodata whilst still attached to one or both of the leading support platform 102 and the towable support platform 108. More preferably, however, the leading support platform 102 and the towable support platform 108 are respectively decoupled from the geotechnical apparatus 104 such that the leading support platform 102 and towable support platform 108 can be used for other tasks while the geotechnical apparatus 104 obtains the geodata. This decoupling of the apparatuses can involve the mechanisms described above with respect to Figures 3-6. In particular, locking elements 306, 406, and 506 can be retracted (i.e., pulled out) to an unlocked position, to enable the coupling interfaces of the apparatuses to move with relative vertical motion, thereby disengaging from one another in the manner described above.

[0087] If the geotechnical apparatus 104 is to be decoupled in this manner, the method proceeds at step 712 with decoupling of the geotechnical apparatus 104 from leading support platform 102, for example in the manner discussed above with respect to Figure 3. Advantageously, prior to decoupling, one or more retractable supports (such as supports 110c in the example of Figure 1) comprised in the first coupling unit 110 are extended into contact with the leading support platform 102, to provide stability once the first coupling unit 110 is decoupled from the geotechnical apparatus 104. In particular, the supports 110c prevent the weight of coupling unit 110 from tipping or destabilising lead support platform 102 after decoupling from geotechnical apparatus. In an example embodiment, two retractable hydraulic pistons are used for this purpose.

[0088] Once decoupled from the geotechnical apparatus 104, the leading support platform 102 is free to drive away and perform other tasks, as shown schematically in Figure 9.

[0089] Next, the method proceeds at step 714 with decoupling of the geotechnical apparatus 104 from towable support platform 108, for example in the manner discussed above with respect to Figures 4-6. Once decoupled, the geotechnical apparatus 104 is free to drive around the geological site of interest (assuming it has a drive mechanism 106, as in the example shown) and obtain geodata. The towable support platform 108 remains in position, as shown schematically in Figure 10. Preferably the towable support platform 108 is stabilised prior to decoupling from the geotechnical apparatus 104. This stabilisation can be provided by one or more locking elements 406 being in contact with the ground, as described with reference to Figures 5 and 6 above.

[0090] Advantageously, at this stage the leading support platform 102 may collect the towable support platform 108 such that the leading support platform 102 and towable support platform 108 can drive away to perform another task, for example transporting a different geotechnical apparatus 104. Accordingly, the method may proceed at step 716 by coupling leading support platform 102 to towable support platform 108, as shown schematically in Figure 11. Preferably, as described above, towable support platform 108 has a similar coupling interface to geotechnical apparatus 104, such that first coupling unit 110 can couple to the towable support platform 108 in the same way as it was previously coupled to the geotechnical apparatus 104. This makes the transportation method simpler and more efficient because the same couplingmechanism (including, for example, use of one or more of locking elements 306, 406, and 506) can be used for this step.

[0091] Once it is desired to collect geotechnical apparatus 104 again for transporting away from the geological site, the leading support platform 102 and towable support platform 108 can be decoupled from one another and the method can begin again from step 702. A safe and efficient mechanism for transporting geotechnical apparatus 104 to and from a target site is thus provided. The method obviates any need for a lowbed trailer or similar support platform to be provided under the main body of geotechnical apparatus 104, and provides the associated benefits described above.

[0092] The above detailed description describes a variety of example arrangements and methods for transporting a geotechnical apparatus. However, the described arrangements and methods are merely exemplary, and it will be appreciated by a person skilled in the art that various modifications can be made without departing from the scope of the appended claims. Some of these modifications will now be briefly described, however this list of modifications is not to be considered as exhaustive, and other modifications will be apparent to a person skilled in the art.

[0093] In the detailed examples described above, the first coupling unit 110 is comprised as part of the leading support platform 102. Similarly, the second coupling unit 112 is comprised as part of the towable support platform 108. This is however optional. In some arrangements, one or both of the coupling units 110, 112 may be comprised by the geotechnical apparatus 104. In that case, the method of transportation is the same as described above, however the couplings are reversed.

[0094] In that case, a geotechnical apparatus is provided, comprising one or more geotechnical measurement devices to enable the geotechnical apparatus to collect geodata. The geotechnical apparatus comprises a first end comprising a first coupling unit, arranged to be coupled to a leading support platform, and a second end comprising a second coupling unit, arranged to be coupled to a towable support platform. The first and second coupling units are arranged to couple the geotechnical apparatus to the respective leading and towable support platforms as described above. In other words, the couplings are such that the geotechnical apparatus bridges a distance between the leading support platform and the towable support platform and the leading support platform and the towable support platform each support at least part of the weight of the geotechnical apparatus.

[0095] As noted above, the geotechnical apparatus may typically have a weight of around 20 tonnes and a height of around 4 meters. However, other dimensions are possible. The geotechnical apparatus may have a weight of at least 10 tonnes, optionally of at least 15 tonnes, further optionally of at least 18 tonnes, still further optionally of at least 20 tonnes. The geotechnical apparatus may have a height of between about 1 and 4 meters, optionally of between about 2 and 4 meters, further optionally of between about 3 and 4 meters. The geotechnical apparatus may have a length of between about 2 and 13 meters, optionally of between about 3 and 8 meters, further optionally of between about 4 and 6 meters. These weight and dimension ranges cover a broad variety of geotechnical apparatuses, ranging for example from large CPT rigs which may be around 13 meters long, all the way down to smaller, standalone drill rigs which may be only around 2 meters long. The above-described advantages of transporting the geotechnical apparatus more efficiently and safely are achieved regardless of the specific type of geotechnical apparatus, making the disclosed methods and systems highly versatile.

[0096] As noted above, the geotechnical apparatus may comprise any apparatus suitable for obtaining geodata. Examples of geotechnical apparatus therefore include a cone penetrometer test (CPT) apparatus,a geotechnical drill apparatus, a geotechnical sensing apparatus, and a housing, battery, or other component part of any of the above-described apparatuses.

[0097] While the first coupling unit in the above example comprises a gooseneck drawbar, this is optional. In some examples, the leading support platform may be a simple dolly or trailer, of the sort shown above for towable support platform 108. In that case, the leading support platform may itself be towed by another trailer or a transportation vehicle. In other words, the geotechnical apparatus may be incorporated into a chain of trailers, dollies, carriages or other support platforms which may all be towed by a lead vehicle. Stated in more general terms, the disclosed transportation system consists of coupling the geotechnical apparatus between a front and a rear support platform in a detachable manner; the precise nature of the support platforms is optional and will vary according to the implementation.

[0098] While in the above examples the first coupling unit 1 10 is advantageously configured to couple to both the geotechnical apparatus 104 and the towable support platform 108, this is not essential. In some alternative embodiments, the leading support platform 102 may couple to the geotechnical apparatus 104 and towable support platform 108 using different coupling units. Similarly, while the coupling interfaces of the apparatuses mirror one another in function and form in the above example, this is not essential and, in some examples, each coupling interface may have its own unique function and form.

[0099] While the above examples utilise locking elements, this is not essential and couplings may be suitably secure without the use of locking elements. For example, this may be the case where the couplings comprise magnetic, ratchet, or friction fits. Where locking elements are used, it is also not essential to have one locking element per coupling interface, although doing so may improve the security of the overall coupling.

[0100] The particular example apparatuses in the figures are merely examples and other types of apparatus can be used. For example, a different type oftransportation vehicle can be used as noted above. Concerning the towable support platform, this may have any number of axles and is not limited to the configuration shown.

[0101] It is to be understood that the above description is intended to be illustrative, and not restrictive. Many other implementations will be apparent to those of skill in the art upon reading and understanding the above description. Although the present disclosure has been described with reference to specific example implementations, it will be recognized that the disclosure is not limited to the implementations described but can be practiced with modification and alteration within the spirit and scope of the appended claims. Accordingly, the specification and drawings are to be regarded in an illustrative sense rather than a restrictive sense. The scope of the disclosure should, therefore, be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.

[0102] While at least one exemplary embodiment has been presented in the foregoing detailed description, it should be appreciated that a vast number of variations exist, only some of which have been mentioned above. It should also be appreciated that the exemplary embodiment or exemplary embodiments are only examples, and are not intended to limit the scope, applicability, or configuration of the disclosure in any way. Rather, the foregoing detailed description will provide those skilled in the art with a convenient road map for implementing the exemplary embodiment or exemplary embodiments. It should be understood that various changes can be made in the function and arrangement of elements without departing from the scope of the disclosure as set forth in the appended claims and the legal equivalents thereof.

Claims

CLAIMS1 . A method of transporting a geotechnical apparatus, the method comprising: coupling a first end of a geotechnical apparatus to a leading support platform via a first coupling unit; coupling a second end of the geotechnical apparatus to a towable support platform via a second coupling unit; and transporting the geotechnical apparatus to a desired location, wherein during said transporting: the geotechnical apparatus bridges a distance between the leading support platform and the towable support platform; and the leading support platform and the towable support platform each support at least part of the weight of the geotechnical apparatus.

2. The method of any preceding claim, wherein the geotechnical apparatus is suspended above the ground between the leading support platform and the towable support platform during said transporting of the geotechnical apparatus.

3. The method of any preceding claim, wherein the geotechnical apparatus comprises a drive mechanism, optionally wherein the method further comprises: raising the drive mechanism of the geotechnical apparatus following coupling of the geotechnical apparatus to the leading support platform and the towable support platform; and lowering the drive mechanism of the geotechnical apparatus prior to decoupling of the geotechnical apparatus from the leading support platform and / or the towable support platform.

4. The method of claim 3, wherein raising the drive mechanism of the geotechnical apparatus comprises transferring the weight of the geotechnical apparatus from the ground onto the leading support platform and the towable support platform, and wherein lowering the drive mechanism of the geotechnical apparatus comprises transferring the weight of the geotechnical apparatus from the leading support platform and the towable support platform to the ground.

5. The method of any preceding claim, further comprising decoupling the geotechnical apparatus from the leading support platform, the method optionally further comprising decoupling the geotechnical apparatus from the towable support platform.

6. The method of claim 5, further comprising: after decoupling the geotechnical apparatus from the leading support platform and the towable support platform, coupling the leading support platform to the towable support platform, optionally wherein the leading support platform comprises the first coupling unit and the leading support platform is coupled to the towable support platform via the first coupling unit.

7. A transportation system for transporting a geotechnical apparatus comprising: a leading support platform, arranged to be coupled to a first end of a geotechnical apparatus; a towable support platform, arranged to be coupled to a second end of the geotechnical apparatus; a first coupling unit arranged to couple the first end of the geotechnical apparatus to the leading support platform; and a second coupling unit arranged to couple the second end of the geotechnical apparatus to the towable support platform, wherein the first and second coupling units are arranged to couple the geotechnical apparatus to the respective leading and towable support platforms such that: the geotechnical apparatus bridges a distance between the leading support platform and the towable support platform; and the leading support platform and the towable support platform each support at least part of the weight of the geotechnical apparatus.

8. The transportation system of claim 7, wherein the first coupling unit is further arranged for coupling the leading support platform to the towable support platform, optionally wherein the leading support platform comprises the first coupling unit and the towable support platform comprises the second coupling unit.

9. The transportation system of claim 7 or 8, further comprising a geotechnical apparatus, optionally wherein a coupling interface provided on the towable support platform and the geotechnical apparatus are both configured to couple with the first coupling unit.

10. A geotechnical apparatus comprising: one or more geotechnical measurement devices; a first end comprising a first coupling unit, arranged to be coupled to a leading support platform; and a second end comprising a second coupling unit, arranged to be coupled to a towable support platform, wherein the first and second coupling units are arranged to couple the geotechnical apparatus to the respective leading and towable support platforms such that: the geotechnical apparatus bridges a distance between the leading support platform and the towable support platform; and the leading support platform and the towable support platform each support at least part of the weight of the geotechnical apparatus.

11. The method, transportation system, or apparatus of any preceding claim, wherein the leading support platform comprises a transportation vehicle, optionally a truck cab, a tractor, a large goods vehicle (LGV), or a train, optionally wherein the first coupling unit comprises a drawbar,optionally wherein the first coupling unit permits manual decoupling of the leading support platform from the geotechnical apparatus and / or towable support platform.

12. The method, transportation system, or apparatus of any preceding claim, wherein the first coupling unit comprises a gooseneck drawbar, optionally wherein the gooseneck drawbar comprises: a first portion configured for attachment to the geotechnical apparatus; and a second portion configured for attachment to the leading support platform, wherein the second portion comprises one or more retractable supports configured to be lowered into contact with the leading support platform prior to decoupling of the gooseneck drawbar from the geotechnical apparatus.

13. The method, transportation system, or apparatus of any preceding claim, wherein the first and / or second coupling unit comprises a locking element, wherein the locking element is movable from: an unlocked position to a locked position to secure the respective first and / or second coupling unit to the geotechnical apparatus, towable support platform, or leading support platform; and a locked position to an unlocked position to release the respective first and / or second coupling unit from the geotechnical apparatus, towable support platform, or leading support platform, wherein the locking element is manually movable between the unlocked and locked positions.

14. The method, transportation system, or apparatus of claim 13, wherein the locking element is configured to be in contact with the ground when in the unlocked position.

15. The method, transportation system, or apparatus of any preceding claim, wherein the geotechnical apparatus comprises one or more of: a cone penetrometer test (CPT) apparatus; a geotechnical drill apparatus; a geotechnical sensing apparatus; or a housing, battery, or component part of any of the above apparatuses.

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