WO2003086940A1 - A holding unit related to a crane arrangement - Google Patents

A holding unit related to a crane arrangement Download PDF

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Publication number
WO2003086940A1
WO2003086940A1 PCT/SE2003/000645 SE0300645W WO03086940A1 WO 2003086940 A1 WO2003086940 A1 WO 2003086940A1 SE 0300645 W SE0300645 W SE 0300645W WO 03086940 A1 WO03086940 A1 WO 03086940A1
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WO
WIPO (PCT)
Prior art keywords
pillar
chair
holding unit
unit according
seat
Prior art date
Application number
PCT/SE2003/000645
Other languages
French (fr)
Inventor
Lars Erne Holmberg
Original Assignee
Jonsered Cranes Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jonsered Cranes Ab filed Critical Jonsered Cranes Ab
Priority to AU2003235339A priority Critical patent/AU2003235339A1/en
Publication of WO2003086940A1 publication Critical patent/WO2003086940A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/52—Details of compartments for driving engines or motors or of operator's stands or cabins
    • B66C13/54—Operator's stands or cabins

Definitions

  • the present invention relates in general to a holding unit that is related to a crane arrangement and, in particular, to such a holding unit that is adapted such that it can support a control location, that is intended for carrying an operator of the crane arrangement and that makes it possible for causing the operation and manoeuvring of the crane (this control location will simply be referred in the subsequent description of this document as a "chair"), and where it is to be possible to attach the said holding unit to a pillar assigned to the crane arrangement.
  • the lower end section of the said pillar is to interact in a manner that allows a rotation with a base structure.
  • Cross is thus used to denote in the subsequent description a central control location, intended for the operation and manoeuvring of the crane arrangement, with a seat and its associated support for the back intended for and adapted to the operator, together with one or several control levers, readily accessible by hand, such that it is possible to influence, directly or indirectly, control valves that are component parts of a system, normally hydraulic, related to the crane arrangement.
  • chair is used to denote not only “open” chairs but also “enclosed” chairs, where the operator is well-shielded from the weather, and where it is to be possible, according to the proposals of the invention, for it to be used in both of the situations described above. It is calculated that the holding unit proposed according to the invention will primarily obtain advantageous use with what are known as crane vehicles - a lorry with a crane arrangement mounted onto it and using a hydraulic crane system with control valves and control levers.
  • a holding unit of the type described here is shown in more detail below and described with reference to Figure 1.
  • a technical problem also lies in the ability to realise the significance of, and the advantages associated with, allowing the basic design of the holding unit to comprise two arm sections, where at least the lower parts of the arm sections are adapted with an inner distance between the parts such that these parts can be brought into interaction with the lower part of the pillar and such that the relevant parts can be located on each side of the pillar.
  • the present invention is based on the prior art described above, in which a holding unit related to a crane arrangement is to be adapted such that it can support a chair intended for the operator of the crane, and where the said holding unit is connected with a pillar related to the crane arrangement, whereby the lower end section of the said pillar interacts via bearings with a base structure in a manner that allows rotation about a vertical axis of rotation.
  • the present invention proposes, in order to solve one or several of the technical problems specified above, in particular that the prior art is to be supplemented by allowing an attachment point for the said holding unit and that relates to the pillar to be located in the vicinity of the lower end section of the pillar and that the said holding unit is to be arranged such that it supports the said chair freely from the pillar at its upper end section.
  • the chair through the design of the holding unit, to adopt a position at an adapted distance from the upper part of the pillar.
  • the holding unit is to comprise two arms or arm sections, one on each side of the pillar, and that it should thus be possible for the holding unit to consist principally of two straight arm sections.
  • the arm sections are to be in fixed interaction with each other, at least via a centrally located central or intermediate section, or via a connecting piece that connects the upper end sections of the said arm sections.
  • the centrally located central piece is to be adapted such that it can support one or several valve units, that are components of a hydraulic system for influencing, among other items, the arms related to the crane arrangement.
  • the connecting piece is to be adapted such that it can hold a chair for the operator fixed attached to the arm sections within the holding unit.
  • the attachment point related to the pillar at its lower section is to have the form of a clamp joint, where an intermediate layer, such as of the material "Adepren”TM, is applied between the outer sections of the pillar, which face away from each other, and the said lower end sections of the arm sections that form the holding unit.
  • a bolted joint, related to the clamp joint is to be adapted such that it passes under an outer attachment that relates to the pillar, intended for a hydraulic piston-cylinder arrange- ment that is part of the crane arrangement.
  • An attachment point assigned to the clamp junction related to the pillar is to serve, among other functions, and to form a support against a collar related to the pillar, in order to absorb or take up in this way torque that is formed or caused by the operator and by the chair. Furthermore, the invention proposes that the chair is to be attached to the upper end section of the holding unit and during the use of a lower tube structure that is to interact in a manner that allows rotation with an upper tube structure that supports the seat and a back section.
  • the seat and the back section are partially surrounded by the said upper, first, tube structure.
  • the lower, second, tube structure is to interact in a manner that allows rotation with the first, upper tube structure in association with the central region of the seat.
  • first and the second tube structures are to be related to each other in a manner that allows rotation under the seat, and that the chair in this way will be collapsible or turned in a direction away from and towards the pillar, and then towards and away from its upper section.
  • one or several control levers for the various motions of the crane arrangement are to be located on one side or on both sides of the seat, and that they are to be attached to the second, lower, tube structure.
  • the first, upper, tube structure is adapted by its special design such that it is able to form protection from interference for the said control levers both when in its forwardly collapsed or turned position and in its position that allows operation.
  • Figure 1 shows a side view of a crane system, according to the prior art, mounted on a lorry and where the crane system is operated with the aid of an operator (not shown in the drawing) sitting in a chair supported by a pillar, using control levers and/or pedals located close to the operator,
  • Figure 2 shows a side view of a holding unit related to a crane attachment according to the present invention with a chair mounted, where the holding unit is fixed attached only to a lower part of the pillar, which is a component of the crane arrangement according to Figure 1 ,
  • FIG 3 shows a frontal view of the embodiment according to Figure 2
  • Figure 4 shows a side view of the holding unit related to a crane arrangement with a mounted chair, where the pillar, however, has been omitted with the aim of achieving clarity
  • FIG 5 shows a perspective view of the holding unit with the chair, according to Figure 4, and
  • Figure 6 shows the lower sections of the holding unit and the arm sections, which are intended to be able to interact, with influence from a clamp joint, at an attachment relating to the pillar, located next to the lower end section of the pillar.
  • FIG. 1 a side view of a crane arrangement 1 mounted on a lorry 4 is shown, where a forward arm or part 1a is arranged such that it can rotate relative to an intermediate arm or part 1b, via an axis of rotation 1a ' , and with the aid of piston-cylinder arrangement "A", which is a part of a hydraulic control system, the rotational position of the arm 1a relative to the arm 1b is controlled in a manner that is previously known.
  • the arm 1b is attached to the upper part 1c ' of a pillar 1c via an axis of rotation 1b ' such that it can rotate, and the rotational position of the arm 1b is controlled upwards and downwards relative to the pillar 1c with the aid of a piston-cylinder arrangement "B".
  • reference numeral 2 illustrates a chair intended for an operator, not shown in the drawing, and in an enlarged view a number of control levers is shown, one of which has been given the reference numeral 3, located next to the chair 2.
  • This control lever 3 is in direct interaction, in a manner that allows rotation, with a control valve 3a, that is connected through tube or pipes of he- avy dimensions to a hydraulic system for a working flow, with a pressure between 200 and 300 bar, in order to be able by this system to control the piston-cylinder arrangements "A" and "B", in a manner that is known.
  • the pipes 3b must thus have dimensions suitable for high pressures and a high flow of hydraulic fluid.
  • the operator for the control usually also has pedals at his or her disposal.
  • a pedal which is not shown in more detail, has here been given the reference numeral 3 ' , and where the motion of the pedals is to, similar to the motion of the levers 3, influence the control valve 3a ' , which interacts through similarly heavily dimensioned tubes or pipes with piston-cylinder arrangements for the regulation of the working flow and the control of various functions.
  • the control valves within the valve unit 20 are now to be operated. This operation can take place according to the alternatives specified in the introduction, whereby an influence on a lever 3 in the plane P1 , or on a pedal 3 ' in a depressed or a raised position, or an influence of a lever 3 in a direction represented by a second plane, or a plane that lies perpendicular to plane P1 , is to be able to influence from a distance the control valves 20.
  • Figure 2 shows a holding unit 10 related to a crane arrange- ment and designed according to the fundamental principles of the invention, where the holding unit 10 is adapted to be able to support a chair 11 , intended for an operator of the crane arrangement, as will be described in more detail below.
  • the said holding unit 10 is fixed attached, while remaining easy to remove, only to a pillar 1c related to the crane arrangement, whereby the lower end section 1d of the said pillar 1c interacts in a known manner in a manner that allows rotation around a vertical axis of rotation with a base structure 1e.
  • a horizontal line of rotation between the lower end section 1 d of the pillar and the base structure 1e has been given the reference numeral 1f.
  • a lower attachment point for the said holding unit 10 and that relates to the pillar has been given the general reference numeral 10a, and is located in the vicinity of and within the said lower end section 1d.
  • the said holding unit 10 is thus arranged to attach and support the said chair 11 at its upper end section 10b.
  • Figure 2 shows that the chair 11 , through the straight design of the holding unit 10 and its angled structure relative to the pillar 1c, adopts a position at an suitable distance from the upper part 1c ' of the pillar 1c, with the attachment that can rotate the arm 1b and the axis of rotation 1b'.
  • the holding unit 10 comprises at least two rigid arm sections 10c, 10c ' , one on each side of the pillar 1c, and that the holding unit 10 in this way is constructed as a separate unit, that principally consists of two straight arm sections that become narrower towards the top, as shown in Figure 2.
  • the rigidity can be achieved by pressing the arm sections 10c and 10c ' to an irregular cross-section in a manner that is known, and this will not be described in more detail.
  • the arm sections 10c and 10c ' interact in a fixed manner with each other primarily through a centrally located central or intermediate piece 10d, and they can also be united by a connecting piece 10e that connects the upper end sections 10b and 10b ' .
  • the centrally located central piece 10d is adapted such that it can support one or several valve units 12, which are somewhat obscured by the pillar 1 c in Figure 3, while being somewhat more clearly shown in Figure 2.
  • connecting piece 10e is included as a part of, while being adapted to hold, a chair 11 for the operator, and where this chair 1 1 will be described in more detail below.
  • the attachment point represented by the reference numerals 10a and 10a ' for the arm sections 10c and 10c ' , that relates to the pillar is shown in more detail in Figure 6. It has the design of a clamp joint, such that no mechanical processing of the pillar 1c or of its lower section 1d is required in order to be able to firmly fix and hold the holding unit 10, while ensuring that it is easy to remove, in an oblique position to the lower part 10d of the pillar.
  • One or several intermediate layers 6, 6, of a material such as the material "Adepren"TM are applied between the pillar 1c and its lower part 1d and the said lower end sections 10a and 10a ' .
  • a bolted joint related to the clamp joint may be adapted to extend under an attachment B1 that relates to the pillar (See Figure 1 and Figure 2), intended as an attachment and a support for a hydraulic piston-cylinder arrangement, here given the reference symbol "B".
  • the bolted joint 6a is adapted to pass through a hole 61 in the lower part 10a of the arm section 10c and a hole 61 ' in the lower part 10a ' of the arm section 10c ' and is thus otherwise located totally freely from the pillar 1c and its part 1d, and is located on the other side of the pillar 1c relative to the chair 11.
  • the bolted joint 6a is thus to be adapted to press the lower parts 10a, 10a ' of the arm sections 10c, 10c ' against each other.
  • An equivalent bolted joint 6b (not shown in the drawing) can be applied to the other side of the pillar 1c at its part 1d and in this case should preferably be located somewhat higher than the bolted joint 6a.
  • one additional attachment point that relates to the pillar is to offer, among other features, support sections 63, 63 ' , which are adapted to support against a collar 1g on each side of the pillar 1c, in order in this way to absorb or take up the bending loads and the torque that the operator and the chair produce.
  • the bolted joint 6a absorbs or take up torque that is directed upwards, while the support sections 63, 63' absorb torque that is directed downwards.
  • the chair 11 is fixed attached, while being easy to remove, to the upper end section 10b of the holding unit 10 through an attachment means, for example, a two-piece connector of known type, which is not shown in detail.
  • the chair 11 principally consists of two endless tube structures, given the reference numerals 35 and 37.
  • the chair 11 comprises a control location 30, in the form of a seat 31 intended for the operator, and having a back support 32 attached to the seat.
  • the first, upper, tube structure 35 is constituted by an endless length of a tube that is bent in several locations that will be conceptually divided into single sections of tube in the subsequent description, in order to facilitate understanding.
  • the second, or lower, tube structure 37 is also constituted by an endless length of a tube that is bent in several locations that will be conceptually divided into single sections of tube in the subsequent description, in order to facilitate understanding. It is clear that the different sections of tube pass into each other without joints.
  • control levers 40, 41 are proposed, in order through these to influence one or several valve units 12 that are components of a hydraulic system for influ- encing and controlling one or several piston-cylinder arrangements, components of the said crane arrangement in order, among other operations, to control the arms that relate to the crane arrangement.
  • the present invention thus proposes that the said seat 31 and the said back support 32 are partially surrounded by one of the tube structures, denoted in the following description as an "upper” tube structure or as a “first” tube structure.
  • first tube structure 35 is constituted by a number of straight sections and bent sections, forming an endless construction. This division into sections, however, is only intended to make clear the features of the invention.
  • a protecting rail 33 is constituted by an upper tube section 35a, formed as a "U" with legs 35b, 35c diverging from the back section 32 and extending out past and over the seat 31.
  • the free end sections 35b ' , 35c ' of the legs 35b and 35c interact each with a short, downwardly pointing section 35d, 35e of tube, these sections of tube being located outside of and in the vicinity of the said control lever or levers 40, 41.
  • the said short, downwardly pointing, sections of tube 35d, 35e interact with a lower section 35f of tube, shaped as a "U”, with legs 35g and 35h that converge towards the back section 32 and pass under and closely alongside the seat 31.
  • the upper section 35a displays a subsection 35i, with a form that is a partially circular line, close to the back section, to which the diverging legs 35b, 35c are connected.
  • the lower section 35f displays a straight subsection 35j, close to the back section, to which the converging legs 35g, 35h are connected.
  • the said lower sections 35g, 35h of tube support the seat 31 and an axis of rotation 36 is located under the seat 31 , in order to be able to turn the said lower section 35f of tube and the said tube structure 35 relative to an underlying tube structure 37.
  • the angle of divergence "a” has been chosen here to lie between 50° and 70°, for example approximately 60°.
  • the said sections 35a and 35f of tube are oriented obliquely relative to each other and having a greater distance between the sections that are located next to the back support 32.
  • angle "b" has been chosen to lie between 10° and 40°, for example approximately 20° - 30°.
  • the underlying tube structure 37 displays special means for at- tachment to a holding unit 10 and/or to one or several support surfaces 37a, 37b adapted for a foot.
  • the underlying tube structure 37 displays a section or stretch 37c of tube that is horizontally oriented, and converging sections 37d and 37e of tube directed upwards from this, with an angle "c" between the horizontally oriented section 37c of tube and the said converging sections 37d, 37e of tube, chosen to lie between 100° and 130°, for example approximately 110° - 120°.
  • the horizontally oriented section 37c of tube has the form of two sections 37f, 37g, in the form of a "U”, with legs that are close to each other interacting through a section 37h, serving as attachment to the upper part 10b of the holding unit 10.
  • control levers 40 and 41 interact through lines, which are only suggested in the drawing, with the valve unit 12, where it would be an advantage if this interaction were to be constituted by the regulator that is displayed and described in detail in a Swedish patent application, submitted by the present applicant on 15th. January 2002, registered under the application number 02 00095-8 and entitled "Regulator".

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  • Mechanical Engineering (AREA)
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Abstract

The present invention comprises a holding unit (10) related to a crane arrangement, adapted such that it can support a chair (11), intended for an operator of the crane arrangement, and where the said holding arrangement (10) is connected with a pillar (1c) related to the crane arrangement, whereby by the lower end section (1d) of the said pillar interacts in a manner that allows rotation with a base structure (1e). An attachment point (10a), relating to the pillar for the said holding unit (10), is located in the vicinity of the said lower end section (10d), and that the said holding unit (10) is arranged such that it can support at its upper end section (10b) the said chair (11) such that the chair can adopt, through the design of the holding unit (10), a position in which it is located at an adapted distance from the upper part (1c') of the pillar (1c).

Description

A HOLDING UNIT RELATED TO A CRANE ARRANGEMENT
Technical Field Related to the Invention
The present invention relates in general to a holding unit that is related to a crane arrangement and, in particular, to such a holding unit that is adapted such that it can support a control location, that is intended for carrying an operator of the crane arrangement and that makes it possible for causing the operation and manoeuvring of the crane (this control location will simply be referred in the subsequent description of this document as a "chair"), and where it is to be possible to attach the said holding unit to a pillar assigned to the crane arrangement.
The lower end section of the said pillar is to interact in a manner that allows a rotation with a base structure.
"Chair" is thus used to denote in the subsequent description a central control location, intended for the operation and manoeuvring of the crane arrangement, with a seat and its associated support for the back intended for and adapted to the operator, together with one or several control levers, readily accessible by hand, such that it is possible to influence, directly or indirectly, control valves that are component parts of a system, normally hydraulic, related to the crane arrangement.
The term "chair" is used to denote not only "open" chairs but also "enclosed" chairs, where the operator is well-shielded from the weather, and where it is to be possible, according to the proposals of the invention, for it to be used in both of the situations described above. It is calculated that the holding unit proposed according to the invention will primarily obtain advantageous use with what are known as crane vehicles - a lorry with a crane arrangement mounted onto it and using a hydraulic crane system with control valves and control levers.
Background to the Invention
Methods and arrangements for holding units with the properties described above and for the use described above are previously known in a number of different embodiments. Such holding units related to a crane arrangement as those that have principally been used for crane arrangements mounted onto a lorry can be mentioned as a first example of the background to the invention and the technical area or field to which the invention relates, and this application can also be regarded as describing different holding units used for other applications.
Thus the attachment of a holding unit related to a crane arrangement to the upper part of a pillar relating to the arrangement, and attaching one end section of the holding unit with the aid of bolted joints to the upper part of the pillar while the second end section of the holding unit is adapted to allow a "chair" to be attached as described previously, for the operator, is previously known.
The use of these holding units for chairs offers a high location of the operator with a good overview of the area of operation of the crane arran- gement, and over its individual functions.
A holding unit of the type described here is shown in more detail below and described with reference to Figure 1.
Description of the Present Invention Technical Problems
If the situation is considered that the technical evaluations that one skilled in the arts must carry out within the relevant technical area in order to be able to offer a solution to one or several of the technical problems that are posed, are not only an initial necessary insight into the measures and/or the sequence of measures that are to be taken, but also a necessary choice of the means (singular or plural) that are required, then the following technical problems should be, with respect to this, relevant during the development of the present invention.
When considering the prior art, as has been described above, and as is made clear by the embodiment shown in Figure 1 , therefore, it should be possible to regard as a technical problem the ability to realise the significance of, and the advantages associated with, creating the conditions required for a holding unit adapted such that it can support a chair intended for the operator of the crane arrangement, and such that the chair movement is essentially independent of movements that affect the pillar and of bending loads when working with the crane arrangement, that is, during loading and unloading goods.
It should be seen or considered as a technical problem the ability to realise the constructional measures that are necessary in order to be able to create or cause, while maintaining the elevated location of the chair, the conditions necessary to omit bolted joints at the upper section of the pillar, which compromise the durability and structural strength.
There is a technical problem associated with the ability to realise the significance of, and the advantages associated with, allowing the said holding unit to be connected to a pillar, that is related to or that belongs to a crane arrangement, to which crane arms are mounted such that they can rotate and/ or pivot via a horizontal axis of rotation, and that its lower end section interacts in a manner that allows rotation with a base structure via a vertical axis of rotation, and where the chair is well-protected and will be retained onto the pillar even in the event that the pillar breaks, for example, at its upper section and/or its central section.
Thus, there lies a technical problem in the ability to realise the significance of, and the advantages associated with, allowing one single attach- ment point, that relates to the pillar and intended for the said holding unit and chair to be at a low location, such as in the vicinity of the said lower end section.
There also lies a technical problem in the ability to realise the significance of, and the advantages associated with, allowing a holding unit, de- signed as one individual unit, to be arranged such that it offers at its upper end section various means of supporting and fixing said chair, and in this respect to carry out the attachment such that it is suitable not only for open chairs but also for covered chairs, placed centrally next to the pillar or located to the side of the said pillar. There also lies a technical problem in the ability to realise the significance of, and the advantages associated with, using a holding unit that is only or solely fixed and attached to the lower end section of the pillar, still being able to create the conditions required such that the chair is able, through the design and form of the holding unit, to adopt a position that lies at an adapted distance from the pillar, and that lies somewhat behind or to the side of the pillar.
A technical problem also lies in the ability to realise the significance of, and the advantages associated with, allowing the basic design of the holding unit to comprise two arm sections, where at least the lower parts of the arm sections are adapted with an inner distance between the parts such that these parts can be brought into interaction with the lower part of the pillar and such that the relevant parts can be located on each side of the pillar.
There also lies a technical problem in the ability to realise the sig- nificance of, and the advantages associated with, allowing the basic design of the holding unit to consist principally of two straight arm sections.
There also lies a technical problem in the ability to realise the significance of, and the advantages associated with, allowing the arm sections to interact with each other with the aim of providing rigidity to the mechanical structure of the holding unit, and in this case principally through a central or intermediate piece located at the centre.
There is also a technical problem in the ability to realise the significance of, and the advantages associated with, using where necessary, with the aim of providing rigidity to the holding unit, a connecting piece structure that joins together the upper end sections of the arm sections.
The ability to realise the significance of, and the advantages associated with, using a clamp joint that acts between the lower end sections of the two arm sections and the lower part of the pillar with the aim of providing rigidity for the holding unit should also be regarded as a technical problem. There also lies a technical problem in the ability to realise the significance of, and the advantages associated with, allowing the central piece located at the centre to be adapted such that it supports one or several control valve units that are components of a hydraulic control system.
There lies a technical problem in the ability to realise the signifi- cance of, and the advantages associated with, allowing the said connecting piece to be dimensioned and adapted such that it can hold a chair for the operator that is fixed by simple fixing means while at the same time being easy to remove. There also lies a technical problem in the ability to realise the significance of, and the advantages associated with, allowing the attachment point for the lower end sections that is related to the pillar to have the form of a clamp joint and where torque, that arises from the operator and the chair, is to be absorbed partly by a bolted joint, located outside of the lower part of the pillar and located on the other side of the pillar behind the chair, and partly by a support section located in the vicinity of the lower part of the pillar and located on the same side as the chair.
There also lies a technical problem in the ability to realise the sig- nificance of, and the advantages associated with, allowing one or several intermediate layers, for example of the material "Adepren"™, related to the clamp joint, to be applied to the surface sections of the pillar that face away and between the pillar and the said end sections of the arm sections.
There also lies a technical problem in the ability to realise the sig- nificance of, and the advantages associated with, allowing the use of a bolted joint, within the said clamp joint, which bolted joint is to be adapted to pass the pillar and under an attachment related to the pillar, such as for a piston-cylinder arrangement that is a component of the crane arrangement, and in this way allowing the said attachment primarily to absorb torque that arises from the operator and from the chair.
Thus, there also lies a technical problem in the ability to realise the significance of, and the advantages associated with, allowing one of the available attachment points for the clamp joint, related to the pillar, to offer, among other aspects, a support section related to the arms, which support section can face a collar related to the pillar, which collar constitutes a supporting part of a layer between the pillar and the base.
Thus, there also lies a technical problem in the ability to realise the significance of, and the advantages associated with, allowing a seat or a chair seat to be fixed attached in a simple manner, and in a manner that al- lows it to be easily removed, to the upper end section of the holding unit.
There also lies a technical problem in the ability to realise the significance of, and the advantages associated with, creating an attachment for a chair, assigned to the holding unit, which attachment ensures that one chair can be easily exchanged for another and that the location of the chair can be chosen to be centred related to the pillar or at either the side of the pillar.
The ability to realise the significance of, and the advantages associated with, creating a chair that is light in weight, without having to relinquish stringent requirements for durability, by constructing and designing a collapsible chair from, in principle, two specially bent and designed tube structures should also be seen as a technical problem.
In this respect, a technical problem would seem to lie in the ability to realise the significance of, and the advantages associated with, allowing the chair to consist of a first upper tube structure, that supports and/or surrounds the seat and a back-support, and which furthermore will be able to protect control levers.
Thus, there lies a technical problem in the ability to realise the significance of, and the advantages associated with, allowing the seat and the back-support of the chair and the upper tube structure to be supported in a manner that allows rotation in relation to a second, lower, tube structure.
There also lies a technical problem in the ability to realise the significance of, and the advantages associated with, allowing the upper tube section to expose a construction, as a "U", to partially surround the seat and back-support of the chair and to open out towards the pillar such that the tube structure will cover the control lever or levers.
There also lies a technical problem in the ability to realise the significance of, and the advantages associated with, allowing an upper and a lower endless tube structure to be related to each other by a rotation, with an axis of rotation located under the seat, such that the seat and back-support of the chair in this way are able to be turned or moved towards and away from the upper part of the pillar, with a first rotational position adapted for transport and a second position for the operator during operation of, among other things, the motion of the arm within the crane arrangement. Thus, there also lies a technical problem in the ability to realise the significance of, and the advantages associated with, allowing control levers for the motion of the crane arrangement to be located on one side of or on both sides of the seat and fixed attached to the second, lower, tube structure. Thus, there also lies a technical problem in the ability to realise the significance of, and the advantages associated with, allowing the first, upper tube structure to be adapted such that it in a first folded position, or position that is folded forwards towards the pillar, creates the conditions required for allowing, primarily, the first, upper, tube structure to serve as a protection from interference for the control levers.
The Solution
The present invention is based on the prior art described above, in which a holding unit related to a crane arrangement is to be adapted such that it can support a chair intended for the operator of the crane, and where the said holding unit is connected with a pillar related to the crane arrangement, whereby the lower end section of the said pillar interacts via bearings with a base structure in a manner that allows rotation about a vertical axis of rotation.
The present invention proposes, in order to solve one or several of the technical problems specified above, in particular that the prior art is to be supplemented by allowing an attachment point for the said holding unit and that relates to the pillar to be located in the vicinity of the lower end section of the pillar and that the said holding unit is to be arranged such that it supports the said chair freely from the pillar at its upper end section.
Furthermore, it is proposed that it should be possible for the chair, through the design of the holding unit, to adopt a position at an adapted distance from the upper part of the pillar. As proposed embodiments, falling within the scope of the fundamental idea of the present invention, it is proposed that the holding unit is to comprise two arms or arm sections, one on each side of the pillar, and that it should thus be possible for the holding unit to consist principally of two straight arm sections. Furthermore, it is proposed that the arm sections are to be in fixed interaction with each other, at least via a centrally located central or intermediate section, or via a connecting piece that connects the upper end sections of the said arm sections. The centrally located central piece is to be adapted such that it can support one or several valve units, that are components of a hydraulic system for influencing, among other items, the arms related to the crane arrangement. The connecting piece is to be adapted such that it can hold a chair for the operator fixed attached to the arm sections within the holding unit.
Furthermore, it is proposed that the attachment point related to the pillar at its lower section is to have the form of a clamp joint, where an intermediate layer, such as of the material "Adepren"™, is applied between the outer sections of the pillar, which face away from each other, and the said lower end sections of the arm sections that form the holding unit.
Furthermore, the invention proposes that a bolted joint, related to the clamp joint, is to be adapted such that it passes under an outer attachment that relates to the pillar, intended for a hydraulic piston-cylinder arrange- ment that is part of the crane arrangement.
An attachment point assigned to the clamp junction related to the pillar is to serve, among other functions, and to form a support against a collar related to the pillar, in order to absorb or take up in this way torque that is formed or caused by the operator and by the chair. Furthermore, the invention proposes that the chair is to be attached to the upper end section of the holding unit and during the use of a lower tube structure that is to interact in a manner that allows rotation with an upper tube structure that supports the seat and a back section.
The seat and the back section are partially surrounded by the said upper, first, tube structure.
The lower, second, tube structure is to interact in a manner that allows rotation with the first, upper tube structure in association with the central region of the seat.
Furthermore, it is proposed that the first and the second tube structures are to be related to each other in a manner that allows rotation under the seat, and that the chair in this way will be collapsible or turned in a direction away from and towards the pillar, and then towards and away from its upper section. Furthermore, it is proposed that one or several control levers for the various motions of the crane arrangement are to be located on one side or on both sides of the seat, and that they are to be attached to the second, lower, tube structure. The first, upper, tube structure is adapted by its special design such that it is able to form protection from interference for the said control levers both when in its forwardly collapsed or turned position and in its position that allows operation.
Advantages
The advantages that can be principally regarded as characteristic for the present invention and the special significant characteristics that are in this way proposed are that in this manner the conditions have been created that are required to make possible a holding unit related to a crane arrange- ment that is to support a "chair" intended for an operator of the crane arrangement and where the said holding unit will be fixed attached only to an attachment point related to the pillar, located next to the lower end section of the pillar, and that it should be possible for the holding unit to extend obliquely upwards such that the chair adopts, through the design of the holding unit, a position at a distance from the upper part of the pillar, and the operator obtains in this way a safe position, even on the rare occasions on which a breakage of the pillar occurs.
The most significant characteristics of the present invention are specified in the characterising part of the attached patent claim 1.
Brief Description of the Drawings
A crane arrangement according to the prior art, mounted on a lorry, and a currently suggested embodiment for a holding unit, with a moun- ted chair, demonstrating the significant features associated with the present invention, will now be described in more detail for the purposes of exemplification with reference to the attached drawings, where: Figure 1 shows a side view of a crane system, according to the prior art, mounted on a lorry and where the crane system is operated with the aid of an operator (not shown in the drawing) sitting in a chair supported by a pillar, using control levers and/or pedals located close to the operator,
Figure 2 shows a side view of a holding unit related to a crane attachment according to the present invention with a chair mounted, where the holding unit is fixed attached only to a lower part of the pillar, which is a component of the crane arrangement according to Figure 1 ,
Figure 3 shows a frontal view of the embodiment according to Figure 2,
Figure 4 shows a side view of the holding unit related to a crane arrangement with a mounted chair, where the pillar, however, has been omitted with the aim of achieving clarity,
Figure 5 shows a perspective view of the holding unit with the chair, according to Figure 4, and
Figure 6 shows the lower sections of the holding unit and the arm sections, which are intended to be able to interact, with influence from a clamp joint, at an attachment relating to the pillar, located next to the lower end section of the pillar.
Description of the Prior Art
With reference to Figure 1 , a side view of a crane arrangement 1 mounted on a lorry 4 is shown, where a forward arm or part 1a is arranged such that it can rotate relative to an intermediate arm or part 1b, via an axis of rotation 1a', and with the aid of piston-cylinder arrangement "A", which is a part of a hydraulic control system, the rotational position of the arm 1a relative to the arm 1b is controlled in a manner that is previously known.
The arm 1b is attached to the upper part 1c' of a pillar 1c via an axis of rotation 1b' such that it can rotate, and the rotational position of the arm 1b is controlled upwards and downwards relative to the pillar 1c with the aid of a piston-cylinder arrangement "B".
With reference numeral 2 illustrates a chair intended for an operator, not shown in the drawing, and in an enlarged view a number of control levers is shown, one of which has been given the reference numeral 3, located next to the chair 2.
This control lever 3 is in direct interaction, in a manner that allows rotation, with a control valve 3a, that is connected through tube or pipes of he- avy dimensions to a hydraulic system for a working flow, with a pressure between 200 and 300 bar, in order to be able by this system to control the piston-cylinder arrangements "A" and "B", in a manner that is known.
It is clear that a complete crane arrangement of the type here described requires further control levers than has been suggested here in order to control and to guide the various functions.
The pipes 3b must thus have dimensions suitable for high pressures and a high flow of hydraulic fluid.
The operator for the control usually also has pedals at his or her disposal. A pedal, which is not shown in more detail, has here been given the reference numeral 3', and where the motion of the pedals is to, similar to the motion of the levers 3, influence the control valve 3a', which interacts through similarly heavily dimensioned tubes or pipes with piston-cylinder arrangements for the regulation of the working flow and the control of various functions.
With reference to Figure 1 , it is also to be illustrated that it is fully possible to arrange a valve unit, which has been given the reference numeral 20, in one region, which has been given the reference numeral 20'.
The control valves within the valve unit 20 are now to be operated. This operation can take place according to the alternatives specified in the introduction, whereby an influence on a lever 3 in the plane P1 , or on a pedal 3' in a depressed or a raised position, or an influence of a lever 3 in a direction represented by a second plane, or a plane that lies perpendicular to plane P1 , is to be able to influence from a distance the control valves 20.
Description of the Embodiment Suggested Here It should initially be made clear that we have selected terms and a special terminology in the subsequent description of an embodiment suggested at the present time that demonstrates the significant characteristics associated with the invention and that is described in the drawings shown in the at- tached Figure 2 - Figure 6, in order, primarily, to make clear the innovative concept of the invention.
It should, however, be taken into consideration in this context that the expressions selected here are not to be seen as limiting to only the term selected and used here, but it is rather to be understood that each such selected term is to be interpreted such that it additionally covers all technical equivalents that act in the same manner, or in essentially the same manner, in order in this way to achieve the same intention and/or technical result, or essentially the same intention and/or technical result, With closer reference to Figure 2, the basic conditions for the present invention are shown schematically, and the significant features associated with the invention are in general exemplified through an embodiment that is now proposed and that will now be described in more detail.
Thus, Figure 2 shows a holding unit 10 related to a crane arrange- ment and designed according to the fundamental principles of the invention, where the holding unit 10 is adapted to be able to support a chair 11 , intended for an operator of the crane arrangement, as will be described in more detail below.
The said holding unit 10 is fixed attached, while remaining easy to remove, only to a pillar 1c related to the crane arrangement, whereby the lower end section 1d of the said pillar 1c interacts in a known manner in a manner that allows rotation around a vertical axis of rotation with a base structure 1e.
A horizontal line of rotation between the lower end section 1 d of the pillar and the base structure 1e has been given the reference numeral 1f.
A lower attachment point for the said holding unit 10 and that relates to the pillar has been given the general reference numeral 10a, and is located in the vicinity of and within the said lower end section 1d.
The said holding unit 10 is thus arranged to attach and support the said chair 11 at its upper end section 10b.
Figure 2 shows that the chair 11 , through the straight design of the holding unit 10 and its angled structure relative to the pillar 1c, adopts a position at an suitable distance from the upper part 1c' of the pillar 1c, with the attachment that can rotate the arm 1b and the axis of rotation 1b'. With reference to Figure 3 - Figure 6, it is there made more clear that the holding unit 10 comprises at least two rigid arm sections 10c, 10c', one on each side of the pillar 1c, and that the holding unit 10 in this way is constructed as a separate unit, that principally consists of two straight arm sections that become narrower towards the top, as shown in Figure 2.
The rigidity can be achieved by pressing the arm sections 10c and 10c' to an irregular cross-section in a manner that is known, and this will not be described in more detail.
The arm sections 10c and 10c' interact in a fixed manner with each other primarily through a centrally located central or intermediate piece 10d, and they can also be united by a connecting piece 10e that connects the upper end sections 10b and 10b'.
The centrally located central piece 10d is adapted such that it can support one or several valve units 12, which are somewhat obscured by the pillar 1 c in Figure 3, while being somewhat more clearly shown in Figure 2.
It is an advantage if the connecting piece 10e is included as a part of, while being adapted to hold, a chair 11 for the operator, and where this chair 1 1 will be described in more detail below.
The attachment point, represented by the reference numerals 10a and 10a' for the arm sections 10c and 10c', that relates to the pillar is shown in more detail in Figure 6. It has the design of a clamp joint, such that no mechanical processing of the pillar 1c or of its lower section 1d is required in order to be able to firmly fix and hold the holding unit 10, while ensuring that it is easy to remove, in an oblique position to the lower part 10d of the pillar. One or several intermediate layers 6, 6, of a material such as the material "Adepren"™ are applied between the pillar 1c and its lower part 1d and the said lower end sections 10a and 10a'.
A bolted joint related to the clamp joint, illustrated with the reference numeral 6a, may be adapted to extend under an attachment B1 that relates to the pillar (See Figure 1 and Figure 2), intended as an attachment and a support for a hydraulic piston-cylinder arrangement, here given the reference symbol "B".
The bolted joint 6a is adapted to pass through a hole 61 in the lower part 10a of the arm section 10c and a hole 61 ' in the lower part 10a' of the arm section 10c' and is thus otherwise located totally freely from the pillar 1c and its part 1d, and is located on the other side of the pillar 1c relative to the chair 11.
The bolted joint 6a is thus to be adapted to press the lower parts 10a, 10a' of the arm sections 10c, 10c' against each other.
An equivalent bolted joint 6b (not shown in the drawing) can be applied to the other side of the pillar 1c at its part 1d and in this case should preferably be located somewhat higher than the bolted joint 6a.
There is nothing to prevent double bolted joints from being arran- ged on each side of the lower part 1d of the pillar.
Furthermore, the invention proposes that one additional attachment point that relates to the pillar is to offer, among other features, support sections 63, 63', which are adapted to support against a collar 1g on each side of the pillar 1c, in order in this way to absorb or take up the bending loads and the torque that the operator and the chair produce. The bolted joint 6a absorbs or take up torque that is directed upwards, while the support sections 63, 63' absorb torque that is directed downwards.
The chair 11 is fixed attached, while being easy to remove, to the upper end section 10b of the holding unit 10 through an attachment means, for example, a two-piece connector of known type, which is not shown in detail.
With reference to Figure 4 and Figure 5, these drawings make it clear that the chair 11 principally consists of two endless tube structures, given the reference numerals 35 and 37. Thus the chair 11 comprises a control location 30, in the form of a seat 31 intended for the operator, and having a back support 32 attached to the seat.
With reference to the drawings, these make it clear that the complete control location with the chair 11 principally consists of two endless tube structures 35 and 37.
The first, upper, tube structure 35 is constituted by an endless length of a tube that is bent in several locations that will be conceptually divided into single sections of tube in the subsequent description, in order to facilitate understanding. The second, or lower, tube structure 37 is also constituted by an endless length of a tube that is bent in several locations that will be conceptually divided into single sections of tube in the subsequent description, in order to facilitate understanding. It is clear that the different sections of tube pass into each other without joints.
Furthermore, a number of control levers 40, 41 , readily accessible for the operator's hands, are proposed, in order through these to influence one or several valve units 12 that are components of a hydraulic system for influ- encing and controlling one or several piston-cylinder arrangements, components of the said crane arrangement in order, among other operations, to control the arms that relate to the crane arrangement.
The present invention thus proposes that the said seat 31 and the said back support 32 are partially surrounded by one of the tube structures, denoted in the following description as an "upper" tube structure or as a "first" tube structure.
The drawings make it perfectly clear that the first tube structure 35 is constituted by a number of straight sections and bent sections, forming an endless construction. This division into sections, however, is only intended to make clear the features of the invention.
A protecting rail 33 is constituted by an upper tube section 35a, formed as a "U" with legs 35b, 35c diverging from the back section 32 and extending out past and over the seat 31.
The free end sections 35b', 35c' of the legs 35b and 35c interact each with a short, downwardly pointing section 35d, 35e of tube, these sections of tube being located outside of and in the vicinity of the said control lever or levers 40, 41.
The said short, downwardly pointing, sections of tube 35d, 35e interact with a lower section 35f of tube, shaped as a "U", with legs 35g and 35h that converge towards the back section 32 and pass under and closely alongside the seat 31.
The upper section 35a displays a subsection 35i, with a form that is a partially circular line, close to the back section, to which the diverging legs 35b, 35c are connected. The lower section 35f displays a straight subsection 35j, close to the back section, to which the converging legs 35g, 35h are connected.
The said lower sections 35g, 35h of tube support the seat 31 and an axis of rotation 36 is located under the seat 31 , in order to be able to turn the said lower section 35f of tube and the said tube structure 35 relative to an underlying tube structure 37.
The angle of divergence "a" has been chosen here to lie between 50° and 70°, for example approximately 60°.
In particular, it is proposed that the said sections 35a and 35f of tube are oriented obliquely relative to each other and having a greater distance between the sections that are located next to the back support 32.
The value of the angle "b" has been chosen to lie between 10° and 40°, for example approximately 20° - 30°.
The underlying tube structure 37 displays special means for at- tachment to a holding unit 10 and/or to one or several support surfaces 37a, 37b adapted for a foot.
The underlying tube structure 37 displays a section or stretch 37c of tube that is horizontally oriented, and converging sections 37d and 37e of tube directed upwards from this, with an angle "c" between the horizontally oriented section 37c of tube and the said converging sections 37d, 37e of tube, chosen to lie between 100° and 130°, for example approximately 110° - 120°.
The horizontally oriented section 37c of tube has the form of two sections 37f, 37g, in the form of a "U", with legs that are close to each other interacting through a section 37h, serving as attachment to the upper part 10b of the holding unit 10.
It is in particular clear that the sections of tube in the form of a "U" each support a support surface 37a, 37b adapted for a foot.
The control levers 40 and 41 interact through lines, which are only suggested in the drawing, with the valve unit 12, where it would be an advantage if this interaction were to be constituted by the regulator that is displayed and described in detail in a Swedish patent application, submitted by the present applicant on 15th. January 2002, registered under the application number 02 00095-8 and entitled "Regulator".
The said patent application is to be regarded as a part of the present application. With respect to the design of the control location 30 or the chair
11 , reference is made to a Swedish patent application, submitted by the present applicant today, entitled "A Manoeuvring Seat Relating to a Crane
Arrangement", the contents of which are also to be regarded as a part of this application. Naturally, the invention is not limited to what has been described above, such as, for example, the specified embodiments. The invention can be subject to modifications within the framework of the innovative concept as illustrated by the attached patent claims.
Special attention should be paid to the fact that each means, device or accessory shown can be combined with each other accessory shown within the framework in order to be able to achieve the desired technical function.

Claims

1. A holding unit, related to a crane arrangement, adapted to support a chair, intended for an operator of said crane arrangement, and where the said hold- ing arrangement is connected with a pillar (1c) related to the crane arrangement, whereby the lower end section (1d) of the said pillar interacts in a manner that allows rotation with a base structure (1e), characterised in that an attachment point (10a), relating to the pillar for the said holding unit (10), is located in the vicinity of the said lower end section (1d), that the said holding unit (10) is arranged such that it can support at its upper end section the said chair (11) and that the chair can adopt, through the extended design of the holding unit, a position at an adapted distance from the pillar (1c).
2. A unit according to claim 1 , characterised in that the holding unit compri- ses two arm sections, one on each side of the pillar.
3. A unit according to claim 1 or 2, characterised in that the holding unit principally comprises two straight arm sections (10c, 10c').
4. A unit according to claim 2 or 3, characterised in that the arm sections interact with each other at least through a centrally located central piece (10d) and, where necessary, through a connection piece (10e) that connects the upper end sections.
5. A unit according to claim 4, characterised in that the centrally located central piece (10d) is adapted to support one or several valve units (12).
6. A unit according to claim 4, characterised in that the connection piece (10e) is adapted to hold a chair for the operator.
7. A unit according to claim 1 , characterised in that the attachment point that relates to the pillar has the form of a clamp joint.
8. A unit according to claim 7, characterised in that intermediate layers, such as the material "Adepren"™, are applied between the pillar and the said lower end sections of the arm sections.
9. A unit according to claim 7, characterised in that a bolted joint is adapted to pass under the attachment related to the pillar for a hydraulic piston-cylinder arrangement (B).
10. A unit according to claim 1 or 7, characterised in that the attachment point relating to the pillar comprises, among other items, a collar that relates to the pillar.
11. A unit according to claim 1 , characterised in that the chair is attached to the upper end section of the holding unit through a lower tube structure.
12. A unit according to claim 11 , characterised in that the seat and back support of the chair are partially surrounded by an upper tube structure.
13. A unit according to claim 12, characterised in that the tube structure interacts with the seat and the back support.
14. A unit according to claim 11 or 12, characterised in that the upper and the lower tube structures are related to each other in a manner that allows rotation within the forward or central subsection of the seat, and in that the seat can be collapsed or turned in a direction towards and away from the pillar.
15. A unit according to claim 1 , characterised in that one or several control levers for motion of the crane arrangement are located on each side of the seat and are attached to a lower tube structure.
16. A unit according to claim 15, characterised in that a tube structure is adapted with an extent such that it in this way offers protection from interference for the said control lever or levers.
PCT/SE2003/000645 2002-04-18 2003-04-22 A holding unit related to a crane arrangement WO2003086940A1 (en)

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SE0201175-7 2002-04-18
SE0201175A SE0201175L (en) 2002-04-18 2002-04-18 Crane arrangement associated with holder unit

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EP2088154A1 (en) 2004-03-09 2009-08-12 Ironwood Pharmaceuticals, Inc. Methods and compositions for the treatment of gastrointestinal disorders
EP2305352A1 (en) 2004-04-02 2011-04-06 Merck Sharp & Dohme Corp. 5-alpha-reductase inhibitors for use in the treatment of men with metabolic and anthropometric disorders
WO2011069038A2 (en) 2009-12-03 2011-06-09 Synergy Pharmaceuticals, Inc. Agonists of guanylate cyclase useful for the treatment of hypercholesterolemia, atherosclerosis, coronary heart disease, gallstone, obesity and other cardiovascular diseases
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WO2014151200A2 (en) 2013-03-15 2014-09-25 Synergy Pharmaceuticals Inc. Compositions useful for the treatment of gastrointestinal disorders
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WO2014197720A2 (en) 2013-06-05 2014-12-11 Synergy Pharmaceuticals, Inc. Ultra-pure agonists of guanylate cyclase c, method of making and using same
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EP3241839A1 (en) 2008-07-16 2017-11-08 Synergy Pharmaceuticals Inc. Agonists of guanylate cyclase useful for the treatment of gastrointestinal, inflammation, cancer and other disorders
EP3415460A1 (en) * 2017-06-15 2018-12-19 Cargotec Patenter AB Load handling crane with high seat and portable manoeuvring unit

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EP2088154A1 (en) 2004-03-09 2009-08-12 Ironwood Pharmaceuticals, Inc. Methods and compositions for the treatment of gastrointestinal disorders
EP2305352A1 (en) 2004-04-02 2011-04-06 Merck Sharp & Dohme Corp. 5-alpha-reductase inhibitors for use in the treatment of men with metabolic and anthropometric disorders
EP2998314A1 (en) 2007-06-04 2016-03-23 Synergy Pharmaceuticals Inc. Agonists of guanylate cyclase useful for the treatment of gastrointestinal disorders, inflammation, cancer and other disorders
EP2810951A2 (en) 2008-06-04 2014-12-10 Synergy Pharmaceuticals Inc. Agonists of guanylate cyclase useful for the treatment of gastrointestinal disorders, inflammation, cancer and other disorders
EP3241839A1 (en) 2008-07-16 2017-11-08 Synergy Pharmaceuticals Inc. Agonists of guanylate cyclase useful for the treatment of gastrointestinal, inflammation, cancer and other disorders
WO2011069038A2 (en) 2009-12-03 2011-06-09 Synergy Pharmaceuticals, Inc. Agonists of guanylate cyclase useful for the treatment of hypercholesterolemia, atherosclerosis, coronary heart disease, gallstone, obesity and other cardiovascular diseases
EP2923706A1 (en) 2009-12-03 2015-09-30 Synergy Pharmaceuticals Inc. Agonists of guanylate cyclase useful for the treatment of hypercholesterolemia
WO2013138352A1 (en) 2012-03-15 2013-09-19 Synergy Pharmaceuticals Inc. Formulations of guanylate cyclase c agonists and methods of use
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WO2014151200A2 (en) 2013-03-15 2014-09-25 Synergy Pharmaceuticals Inc. Compositions useful for the treatment of gastrointestinal disorders
WO2014151206A1 (en) 2013-03-15 2014-09-25 Synergy Pharmaceuticals Inc. Agonists of guanylate cyclase and their uses
WO2014197720A2 (en) 2013-06-05 2014-12-11 Synergy Pharmaceuticals, Inc. Ultra-pure agonists of guanylate cyclase c, method of making and using same
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RU2631732C2 (en) * 2014-05-23 2017-09-26 Эпзилон Кран Гмбх. Crane
CN105084215A (en) * 2014-05-23 2015-11-25 埃普斯隆起重机有限公司 Crane
EP3415460A1 (en) * 2017-06-15 2018-12-19 Cargotec Patenter AB Load handling crane with high seat and portable manoeuvring unit
WO2018228768A1 (en) * 2017-06-15 2018-12-20 Cargotec Patenter Ab Load handling crane

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SE0201175D0 (en) 2002-04-18
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