JP4084868B2 - Drilling rig with drilling machine - Google Patents

Description

[0001]
The object of the present invention is in particular (but not limited to) an excavator of the type provided with a rotary drum cutter type excavator.
More precisely, the present invention relates to a platform on which the excavator support boom is mounted and a so-called flexible conduit or support cable for supplying different parts of the excavator mechanism, an electrical cable. Relates to a drilling rig or installation comprising a drum wound on top.
[0002]
[Prior art]
In particular, according to French Patent No. 2696768, a chassis that supports a rotating drum for cutting is mounted so as to rotate in relation to a supporting mechanism suspended from a lifting element, and thus a rotating drum for cutting in relation to a vertical axis. There is already known a rotary drum cutter type trench digging tool that can be oriented at will. Among such excavating machines, in particular, the hydraulic prime mover for driving the cutting drum, the measurement of certain parameters and electrical sensors for the control of the machine associated with the prime mover, and the debris as the cutting drum operates An axial suction line to induce pulling can be seen. These different mechanisms must be connected to the pump system in the case of a pressurized liquid source or electrical mechanism or even a debris suction conduit.
[0003]
Similarly, in particular, according to French Patent No. 2696767, the assembly of the means for supporting and feeding the rotating drum cutting machine is mounted on a platform supported by the traveling device, so that the drilling rig is completely autonomous and independent. Also known are instruments for drilling deep trenches into the soil using a cutting drum, the main feature of which is that they can be guided to a working position.
However, flexible debris suction conduits, flexible conduits for pressurized liquid supply and electrical cables are connected between the rotating drum where these cables or conduits are stored and their connection points on the excavating machine support mechanism. It can be seen that there is a problem to guide and maintain.
[0004]
Similarly, it is necessary that this induction be performed under conditions where there is no risk of disruption in the supply of pressurized liquid or suction of debris due to breakage or pinching of the conduit. Can also understand.
[0005]
[Problems to be solved by the invention]
It is an object of the present invention to provide a drilling rig of the type described above that includes an arrangement for guiding various conduits and electrical cables toward the drilling machine as it enters the trench being constructed. .
[0006]
[Means for Solving the Problems]
To achieve this objective, the drilling rig is
· platform,
A boom having a first end hinged on the platform and a second upper end;
A support mechanism suspended from the second end of the boom, and a vertical axis that is mounted to rotate about the axis in relation to the support equipment, and A drilling machine including a chassis having debris lifting pipes, fluid circulation hoses and electrical conductors disposed along;
A first rotating drum which is mounted on a flexible conduit adapted to be coupled to the conduit and wound on the platform about a first horizontal axis;
At least one second rotating drum with a flexible conduit wound around and connected to at least the hose and / or
At least one electrical cable adapted to be connected to the conductor,
The second drum is mounted in a manner to rotate on the platform about a second horizontal axis.
[0007]
The drilling rig further comprises a groove capable of accommodating the flexible conduit, and is near the second end about a first axis substantially parallel to the axis of the first drum. A first pulley pivotably mounted on the boom; and-a groove that can accommodate the flexible conduit and / or the electrical cable, respectively, approximately with respect to the second axis of the second drum At least one first pulley assembly mounted pivotably on the boom about a parallel second axis and near its second end;
The first and second axes of the pulley are not parallel to each other.
It can be seen that, according to the conditions of the present invention, different conduits or different cables are guided by pulleys located on the boom head of the excavator. Thus, these conduits or cables can be lowered in the same way as so-called excavating machines by being guided parallel to the supporting cables of the excavating machine.
[0008]
Thus, different conduits or cables can be prevented from tangling and the risk of disturbing the refilling of the water supply mechanism mounted on the excavating machine by similarly folding these conduits locally can also be avoided.
According to a preferred embodiment, the platform has two drums for storage of cables or flexible conduits, with a second pulley assembly at the upper end of the boom. The axis of rotation of the storage drum and pulley or pulley assembly is coincident with the central plane of the storage drum and pulley or associated pulley assembly so that the cable or conduit provides a support mechanism for the excavator frame at the upper end level of the boom. It is such that it “converges” toward the vertical axis of rotation about the center.
Due to this arrangement, the guidance of the cable and conduit from its storage drum to its end connected to the support mechanism of the excavating machine is thus optimal.
[0009]
Other features and advantages of the present invention will become more apparent upon reading the following description of a preferred embodiment of the invention, given by way of non-limiting example, with reference to the accompanying drawings. Let's go.
First, various parts of the excavator will be described with reference to FIG. This drilling rig basically comprises a platform 10 which is preferably mounted on a caterpillar 12 and is entirely self-propelled. A lifting and supporting boom 14 is hinged on the platform 10. Here, the lower end 16 of the boom is not hinged on the platform 10, and the upper end 18 is hereinafter referred to as a boom head. On the platform 10 are stored two assemblies (24 and 26, respectively) of a relatively large diameter flexible conduit stored on the drum 22 on the one hand and a smaller diameter flexible conduit and cable on the other hand, respectively. Also shown is a drum that is mounted for rotation on the platform to allow payout, wherein the two assemblies of cable and flexible conduit are stored on the rotating drums 28 and 30. The conduit 20 serves to pull up the debris extracted by the rotating drum of the cutter. Its inner diameter is typically about 15 cm.
[0010]
Also shown in this figure is a so-called excavation mechanism 32 consisting essentially of a chassis 34 that supports a cutting rotary drum 36, which chassis is centered about a vertical axis in relation to the support mechanism 40. 34 has an upper end 38 that is mechanically coupled to support mechanism 40 in a manner that allows rotation of 34. As already mentioned, the chassis 34 has electrical components, in particular a hydraulic prime mover for driving the cutter and in particular a sensor or a hydraulic prime mover control mechanism.
The chassis 34 also includes axial piping 42 that serves to pull up debris and clay water as it is extracted by the cutter 36. The different electrical conductors mounted on the chassis 34 and the water supply and pull-up pipes 42 are connected to the support mechanism 40 by the system described in the aforementioned document. In other words, the problem is to connect large diameter flexible conduits, small diameter flexible conduits and electrical cables to the support mechanism 40 in a manner that avoids confusion among these different cables and conduits. is there. Also shown in this simplified view is a tackle system 44 that allows the support mechanism 40 to be supported at the upper end 18 of the boom 14 while allowing the lowering motion of the excavating machine as the trench is excavated. Similarly, the figure also shows a cabstan driven by a prime mover 46 for controlling the operation of the cables that make up the tackle 44 to allow the excavating machine 32 to move.
[0011]
In accordance with the present invention, the assembly of cables and flexible conduits 24 and 26 and the large diameter flexible conduit 20 are connected to the cutting machine support mechanism 40 and the respective storage drum by an oriented grooved wheel which will be described in detail later. Induced between. Here it is sufficient to specify that these pulley assemblies, numbered 50, are mounted in a pivoting manner near the boom head 8. With reference now to simplified Figures 2 and 3, the induction of water conduits and electrical cables between the storage drums 22, 28 and 30 and the excavating machine 32 will be described in further detail.
In the particular example described here, the flexible conduits and electrical cables for the circulation of pressurized liquid are distributed in the form of two layers each having, for example, four water supply flexible conduits and one electrical cable. ing. Each of the two layers is stored on one of drums 28 and 30.
[0012]
In FIG. 3, storage drums 22, 28 and 30 are shown mounted in a manner that pivots about their respective axes 52, 54 and 56 in relation to the platform 10. In this embodiment, the axis of the drum 22 on the one hand and the axes of the drums 28 and 30 on the other hand are such that the common central plane P of the drums 28 and 30 and the vertical central plane Q of the drum 22 are approximately the rotational vertical axis of the chassis of the excavating machine 32. They are oriented in such a way that they intersect almost along a single vertical straight line. This intersecting straight line is indicated schematically by the reference number R. More strictly speaking, the vertical planes P and Q naturally form an angle a with the longitudinal direction of the chassis 10 including the boom 14. For the purpose of ensuring optimal guidance of the electrical cables and flexible conduits stored on the large diameter conduit 20 on the one hand and on the other drums 28 and 30 on the other hand, on the one hand a rotational axis 60 substantially parallel to the rotational axis 52 of the drum 22. There are two pulley assemblies 62 and 64 having a rotation wheel 66 and 68 that are substantially parallel to the common direction of the rotation shafts 54 and 56 of the drums 28 and 30. Moreover, the central plane of the pulley substantially coincides with the central plane of the corresponding storage drum. Thus, the large diameter conduits on the one hand and the cables and flexible conduits on the other hand converge on the rotary vertical axis of the excavating machine after passing over the groove 58 and the pulley assemblies 62 and 64, respectively.
[0013]
In FIG. 2, the arrangement of different groove wheels mounted on the boom head 18 so as to rotate along the vertical direction is shown. The first pulley assembly 64 is preferably located below the pulley 58 for the large diameter conduit, which itself is located below the pulley assembly 62 for the flexible conduit and the second layer of electrical cable. Has been. The pulley 58 is arranged in such a way that a part of the large diameter conduit 20 exiting from it is arranged along the axis of rotation ZZ 'of the excavating machine. The pulley assemblies 62 and 64 are offset so that the first and second layer conduits and cables passing over the pulley assemblies 62 and 64, respectively, are generally located on either side of the large diameter conduit 20, and thus These are actually present at right angles to the support mechanism 40 of the excavating machine 32. This figure likewise shows the pulleys 70, 72, 74 and 76 corresponding to the guidance of the lifting cable 44 in a simplified form.
[0014]
In FIGS. 4 and 5, the assembly of the pulley associated with the lifting cable 44 running along the pulleys 58, 62 and 64 is shown in more detail. The pulley assembly 62 has as many grooves as flexible conduits or electrical cables on the layers stored on the drum 30. The pulley assembly 64 corresponding to the storage drum 28 is actually constituted by two pulley assemblies 64a and 64b in order to provide the necessary horizontal offset taking into account the mechanical structure of the boom head. Each of the pulley assemblies 64 a and 64 b naturally has one axis of rotation, and these two axes of rotation are naturally parallel to each other and parallel to the axis of rotation of the drum 28.
Thanks to the arrangement according to the invention, not only large diameter flexible conduits useful for lifting debris, but also smaller diameter flexible conduits useful for watering hydraulic motors of drilling machines, and even electrical cables, are all It can be seen that the vehicle passes over a pulley mounted on the boom head 18. Moreover, the directionality and position of the rotational axes of the pulley assemblies 62 and 64 and the pulley 58 are such that they provide excellent guidance taking into account the directionality of the storage drums 20, 29 and 30, and in fact the water supply conduits. Alternatively, it is selected in such a way as to ensure convergence of the portion of the debris pulling conduit and the electric cable descending beyond the pulley. Thus, these different conduits and cable payouts are obtained in synchronism with the lowering of the excavating machine, thus avoiding any confusion in the position of these cables and conduits, and any jamming, especially for large diameter conduits 20 The danger of is avoided.
[0015]
Of course, there may be more than one flexible drum and electrical cable storage drums 28,30. In this case, the axis of the pulley assembly is parallel to the axis of rotation of the associated drum, and each “pair” of storage drum and pulley assembly has approximately one common central plane, and these central planes It is important that they intersect approximately along the vertical axis of rotation of the excavator chassis.
[Brief description of the drawings]
FIG. 1 is an elevational side view of the entire excavator. FIG.
FIG. 2 is a simplified diagram illustrating the attachment of different guide wheels at the upper end of the boom.
FIG. 3 is a schematic top view showing different drums and guide wheels for storage of cables and flexible tubes.
FIG. 4 is a first perspective view under a first angle of an upper end of a boom with different guide wheels.
FIG. 5 is a similar view under another angle.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Platform 14 Boom 20 Flexible conduit | pipe 22,28,30 Rotary drum 24 Deflection conduit | pipe 26 Electric cable 32 Excavation machine 34 Chassis 40 Supporting mechanism 42 Debris raising piping 58 Pulley 62, 64 Pulley assembly

Claims (7)

・ Platform (10),
A boom (14) having a first end and a second upper end hinged on the platform;
A support mechanism (40) suspended from the second end of the boom, and a vertical axis that is mounted to rotate about this axis in relation to the support equipment; A drilling machine (32) comprising a debris pulling pipe (42), a fluid circulation hose and a chassis (34) having electrical conductors disposed along
A first rotation in which a flexible conduit (20) adapted to be connected to the pipe is wound up and mounted on the platform about a first horizontal axis; Drum (22),
At least one second rotating drum (28, 30) wound and connected to at least a hose, and / or connected to an electrical conductor At least one electrical cable (26),
A drilling rig, wherein the second drum is mounted for rotation on the platform about a second horizontal axis;
A groove capable of accommodating the flexible conduit (20) and about the first axis (60) substantially parallel to the axis of the first drum, near its second end; A first pulley (58) pivotably mounted on the boom; and-a groove capable of accommodating the flexible conduit (24) and / or the electrical cable (26), respectively, At least one first mounted pivotally on the boom about a second axis (66, 68) substantially parallel to the second axis of the drum and near its second end. 1 pulley assembly (62, 64),
The first shaft (60) of the first pulley (58) and the second shaft (66, 68) of the first pulley assembly (62, 64) are not parallel to each other. And drilling rig. A flexible conduit (24) adapted to be connected to the hose and / or at least one electrical cable (26) adapted to be connected to a conductor is wound up on the second Comprising a second second rotating drum (28, 30) mounted on the platform about a second horizontal axis of
The second end about a second second axis substantially parallel to the axis of the second second drum, having a groove for accommodating the flexible conduit and / or the cable; The drilling rig of claim 1, further comprising a second pulley assembly (62, 64) mounted in a rotating manner near the boom on the boom.   The rotation axes of the first (28) and second second (30) drums are substantially parallel to each other, and on the one hand the axis of the first drum (22), on the other hand the first and second Drilling rig according to claim 2, characterized in that the axis of the second drum (28, 30) is at substantially the same angle as the longitudinal axis of the platform, this angle being less than 90 degrees.   The center plane of the first drum (22) orthogonal to the rotation axis substantially coincides with the center plane of the first pulley (58) orthogonal to the rotation axis, and each of the first planes orthogonal to the rotation axis. Drilling rig according to any one of claims 2 or 3, characterized in that the central plane of the two drums (28, 30) substantially coincides with the central plane of the associated pulley assembly (62, 64). .   An axis of rotation of the first pulley (58) is disposed on the boom (14) at one dimension included between the dimensions of the axis of rotation of the pulley assembly (62, 64). 4. The excavator according to 4.   The portion of the flexible conduit (20) that extends beyond the first pulley (58) is generally disposed along the vertical axis of rotation of the chassis (34) of the excavating machine (32). The excavator according to claim 5.   A portion of the flexible conduit (24, 26) that extends beyond the pulley assembly (62, 64) of the flexible conduit (24, 26) is centered around a corresponding portion of the flexible conduit (20). Drilling device according to claim 6, characterized in that it is arranged substantially opposite the support mechanism (40).

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