Excavation equipment assembly and method

Abstract

The application relates to a civil engineering equipment arrangement comprising a substantially vertical mast (12) along which a drive carriage (20) with at least one rotary drive (22) is slidably mounted, at least one elongated soil cultivation tool (30) which is arranged on a rotary drive (22) for moving and inserting into the soil (5) and is driven by rotation via the rotary drive (22), and at least one cover element (50) which extends at least partially along the mast (12) and covers at least a circumferential section of the at least one elongated soil cultivation tool (30) to form a splash guard, wherein a separate auxiliary carriage (40) is mounted on the mast (12) above the drive carriage (20), wherein an upper end of the at least one cover element (50) is attached to an upper holding device (48) of the auxiliary carriage (40).wherein the drive carriage (20) with the at least one elongated soil cultivation tool (30) is movable independently of the auxiliary carriage (40), and the auxiliary carriage (40) with the attached cover element (50) is movable on the mast (12) independently of the drive carriage (20).

Description

[0001] The invention relates to a civil engineering equipment arrangement comprising a substantially vertical mast, along which a drive carriage with at least one rotary drive is displaceably mounted, at least one elongated soil cultivation tool which is arranged on the rotary drive for displacement and insertion into the ground and is rotationally driven via the rotary drive, and at least one cover element which extends at least partially along the mast and covers at least a peripheral portion of the at least one elongated soil cultivation tool to form a splash guard, according to the preamble of claim 1.

[0002] The invention further relates to a civil engineering method, in particular for implementation using a civil engineering device arrangement according to the invention, comprising at least one elongate soil cultivation tool which is driven in rotation by means of a rotary drive for displacement and insertion into the ground and is displaced along a substantially vertical mast by means of a drive carriage with the rotary drive, and at least one cover element which is arranged at least partially along the mast, wherein at least one peripheral portion of the elongate soil cultivation tool is covered to form a splash guard, according to the preamble of claim 10.

[0003] The following prior art documents each disclose the features of the generic term in different applications: CN 214 401 774, KR 2005 0040138A and CN 214 783 905.

[0004] Civil engineering equipment assemblies and methods that utilize elongated soil cultivation tools, such as continuous-feed augers or drill-mixing tools, have long been used to create foundation elements, for example, for the formation of foundation piles or bored pile walls. Such soil cultivation tools can be several meters long, for example, up to 20 meters or more. When such an elongated soil cultivation tool is repeatedly inserted into the ground and subsequently withdrawn, the problem can arise that soil material and / or suspension adhering to the soil cultivation tool is thrown out of the borehole by centrifugal force due to the rotational movement in a retraction position outside the borehole.Particularly when working along existing buildings or other objects requiring protection, this can result in unwanted splashing from soil particles and / or suspended particles. This can lead to significant contamination and even damage to a building, for example.

[0005] This applies in particular to the construction of bored pile walls with several drilling and mixing tools arranged next to one another according to the MIP ®< method, as described in DE 42 19 150 C1.

[0006] To prevent contamination from rotating drilling tools, it is known, for example, from CN 217536932 U, to construct a cover element made of plate-shaped segments along at least a portion of the mast with the elongated soil cultivation tool mounted thereon. Such a construction is labor-intensive, especially since it must be repositioned when the drilling rig is moved to a new processing location.

[0007] It is also known to provide another device, such as a crane, parallel to the civil engineering equipment arrangement, on which a plate- or tarpaulin-like cover element is constructed and arranged as a splash guard parallel to the mast with the elongated processing tool. This procedure is also relatively complex, as it requires a separate device, in particular a crane, which is then unavailable for other activities. Furthermore, at certain construction sites, space constraints prevent an additional device from being easily installed in addition to a civil engineering equipment arrangement.

[0008] Furthermore, it is generally known to attach a roller-like arrangement of a cover element to the drive carriage of a drilling rig. A free end of a rolled-up cover element is secured in the base area, so that when the drive carriage moves upwards, a sheet-like cover element is unwound from the roller-like receptacle on the drive carriage. When the drive carriage moves downwards, the sheet-like cover element can be rolled back into the receptacle by a spring-loaded device.

[0009] However, this fundamentally practical arrangement has the problem that, over time, the splashes accumulating on the cover element increasingly impair the winding and unwinding functions. The functionality of the return spring mechanism can also be impaired by increasing contamination. This arrangement is therefore very maintenance-intensive, although malfunctions can still occur, requiring regular replacement.

[0010] The invention is based on the Task The aim is to specify an arrangement of civil engineering equipment and a civil engineering method which achieves particularly efficient and reliable splash protection.

[0011] The object is achieved, on the one hand, by a civil engineering device arrangement having the features of claim 1 and, on the other hand, by a civil engineering method having the features of claim 10. Preferred embodiments of the invention are specified in the respective dependent claims.

[0012] The civil engineering device arrangement according to the invention is characterized in that the drive carriage with the at least one elongate soil working tool can be moved independently of the additional carriage, that the additional carriage with the attached cover element on the mast can be moved into an upper covering position in which the at least one cover element extends from the upper covering position along the mast to a lower covering position on or near the ground, that the additional carriage with the cover element thus clamped can be held in the upper covering position as a holding position during the civil engineering process and that the drive carriage with the at least one elongate soil working tool can be moved relative to the additional carriage with the attached cover element.

[0013] A basic idea of the invention is to provide a separate additional carriage on the mast above the drive carriage, which is largely independent of the drive carriage. An upper holding device for attaching an upper end of the at least one cover element is arranged on the additional carriage. In order to attach the cover element, the separate additional carriage can initially be moved downwards near the ground along the mast with the drive carriage. After the upper end of the cover element has been attached to the upper holding device on the additional carriage, the latter can be moved upwards along the mast together with the drive carriage or separately from it. In this way, the cover element is pulled up along the mast and extends in particular from an upper end of the mast downwards to the ground or at least close to the ground.The additional carriage with the covering element clamped in this way can remain in this upper holding position throughout the entire excavation process, allowing the elongated soil cultivation tool with the drive carriage to be moved freely along the mast, regardless of the position of the additional carriage. The upper covering position on the mast is located above the lower covering position. The upper covering position can be located at the upper end of the mast or at a location below it.

[0014] This eliminates the frequent rolling and unrolling of a sheet-like cover element and the associated problems. After soil cultivation, the additional carriage can be lowered again to remove the cover element. The cover element can be disposable or reusable, which can be cleaned of adhering dirt at specific times.

[0015] In principle, the cover element can be designed in any suitable manner, for example from articulated, interconnected slats. According to one embodiment of the invention, it is particularly preferred for the cover element to be a flexible, web-like element, in particular a film, a woven fabric, or the like. Such web-like, flexible elements can be produced cost-effectively, in particular from a polymer material such as a film, woven fabric, knitted fabric, mesh- or fabric-reinforced film, etc., in almost any length and with almost any quality and strength. Printing and thus a particularly colorful design of a web-like cover element is also readily possible, so that, for example, attractive motifs for concealing the soil cultivation tool, advertising or company logos, or other motifs can be applied.

[0016] According to a further development of the invention, it is preferred that a receiving device for the cover element is provided, in which the cover element is received in a rolled or folded arrangement, and from which the cover element attached to the additional carriage can be removed and retracted as the additional carriage moves upwards. The receiving device can in particular comprise a box or other housing in which the cover element is mounted in a rolled or folded arrangement. Preferably, a spring return mechanism can be provided, with which the cover element can be returned to the receiving device. For this purpose, a motor or a manual actuation, such as a hand crank, can also be arranged for retracting a roller-blind-like cover element.

[0017] The support device can be placed on or near the ground and secured in this position. A free end of the sheet-like cover element is attached to the additional carriage, which is moved to a lower position on the mast for this purpose. By moving the additional carriage upwards, the cover element is unrolled or unfolded from the support device and positioned along the mast.

[0018] After operation, the web-like cover element can be retracted into the receiving device by rolling or folding it, either mechanically or manually, by moving the additional carriage downwards. This allows for multiple uses of the cover element.

[0019] When designed as a disposable element, the receiving device can also be a simple box or carton from which it is taken or pulled out by the additional carriage.

[0020] In principle, the receiving device can remain stationary on the ground at the processing location. A further preferred embodiment of the invention consists in that a lower holding device is arranged on the mast, to which a lower end of the cover element can be attached. This is particularly advantageous when a cover element is pulled off the receiving device in its entirety or is cut to a desired length by cutting a longer starting material to length. The free lower end thus formed can then be fastened to the mast at the lower holding device. The holding device can preferably be arranged on a lower clamping device for the soil processing tool on the mast. In principle, it is also possible for a box-shaped receptacle with a retrieval mechanism to be held on the holding device on the civil engineering device.

[0021] A further advantageous embodiment of the invention consists in that the cover element is flat or curved during operation. The simplest embodiment is a flat arrangement. The cover element can be arranged as a flat track along the mast with a width of preferably between 1 meter and 4 meters. For this purpose, a straight holding rod or holding rail can be arranged on the additional carriage as an upper holding device. Alternatively, the upper holding device can also be designed with a bend or a fold, so that the cover element has a correspondingly curved arrangement in which the cover element extends around at least a partial circumferential area of the soil cultivation tool. In cross-section, the cover element clamped in this way can have a C-shape or U-shape.

[0022] In principle, the cover element according to the invention can be used with a wide variety of soil cultivation tools in which, in particular due to a rotary movement, contamination of the surrounding area through splashes can occur. According to a further development of the invention, it is particularly preferred that the soil cultivation tool is designed as a drilling tool for removing soil material and / or a mixing tool for mixing a borehole filling. The soil cultivation tool can in particular be a drilling auger, particularly preferably a so-called continuous auger. The soil cultivation tool can also be designed as a mixing tool in which radially projecting mixing elements are attached along a central shaft in order to mix a suspension in the soil within a borehole as homogeneously as possible.

[0023] A combination of a drilling tool for soil removal and adjoining mixing elements can also be provided. For operational reasons, such soil tillage tools, which can be up to 20 meters long or more, can find themselves in operating states where, after repeated insertion into a suspension-filled borehole, the soil tillage tool is partially inside and partially outside the borehole. In such an operating state, adhering suspension and soil material can be thrown off during rotating operation of the soil tillage tool. The cover element, in contrast, provides effective splash protection to protect adjacent buildings or other objects worthy of protection.

[0024] According to one embodiment of the invention, it is particularly expedient for several soil cultivation tools to be arranged parallel to one another and displaceable with the drive carriage. One or more drilling drives for driving the several soil cultivation tools can be arranged on the drive carriage. Preferably, three or more parallel soil cultivation tools are arranged next to one another, which particularly enables the efficient construction of a bored pile wall from soil mortar. The cover element according to the invention can be used in particular in a so-called MIP ®< process.

[0025] In principle, the additional carriage can be moved from its lower mounting position on the mast with the drive carriage underneath it into the upper holding or covering position. A locking device can be provided in the upper covering position, which secures the additional carriage with the cover element clamped to it in the upper covering position. For retrieval, the drive carriage can be moved back to the upper position, with the locking device subsequently unlocked to release the additional carriage. The unlocked additional carriage can then be moved back down together with the drive carriage.

[0026] According to a further development of the invention, particularly efficient operation is achieved in that a travel device for moving the additional carriage along the mast is arranged. The additional carriage can thus be moved along the mast almost completely independently of the drive carriage. In general, the additional carriage can be guided in the same mast guide as the drive carriage. However, different linear guides can also be provided on the mast for the drive carriage on the one hand and the additional carriage on the other. A particularly efficient embodiment of the invention consists in the travel device being designed as a cable winch device. In particular, existing drilling rigs are already equipped with one or more cable winches, so that, for example, a so-called auxiliary cable can be used to move the additional carriage.The additional carriage is simply connected to the free end of a hoist rope, which is led over the mast head to a winch device on the mast or on the carrier device.

[0027] The invention further comprises a civil engineering method, which is particularly intended for implementation with the above-described civil engineering equipment assembly according to the invention. Furthermore, the above-described civil engineering equipment assembly according to the invention is preferably designed for implementation of the civil engineering method according to the invention.

[0028] The civil engineering method is such that a separate additional carriage is mounted on the mast above the drive carriage, wherein an upper end of the covering element is attached to the additional carriage by means of an upper holding device. The civil engineering method according to the invention is characterized in that the additional carriage with the attached covering element is moved on the mast into an upper covering position in which the at least one covering element extends from the upper covering position along the mast to a lower covering position on or near the ground, that the additional carriage with the covering element thus clamped remains in the upper covering position as a holding position during the civil engineering method, and that for soil cultivation, the drive carriage is moved with the at least one elongated soil cultivation tool relative to the additional carriage with the covering element.

[0029] With the civil engineering method according to the invention, the advantages described above can be achieved when using the civil engineering equipment arrangement according to the invention.

[0030] The invention is further described below using a preferred embodiment. The drawing shows: Figures 1 to 5 each show a side view of a mast of a civil engineering equipment arrangement according to the invention with a cover element in different operating states; and Fig. 6 shows a cross-sectional view of section AA of Fig. 4 .

[0031] In Figure 1 A civil engineering equipment assembly 10 according to the invention is schematically illustrated. For the sake of simplicity, only the mast 12 is shown, while a carrier device, which may in particular be movable, is not shown. The mast 12 is preferably adjustably mounted on the carrier device (not shown).

[0032] The mast 12 can be designed as a leader with at least one linear guide 14 at its front. A drive carriage 20 with a rotary drive 22 is displaceably mounted along the linear guide 14. The drive carriage 20 can be moved along the essentially vertical mast 12 via a drive movement device 26, which in the illustrated embodiment is a cable winch drive with a cable guided over a mast head 13.

[0033] According to the invention, an additional carriage 40 is arranged for linear movement along the mast 12 above the drive carriage 20. A movement device 70 is provided for movement, which is also designed as a cable winch device with a cable, which can be guided to a cable winch via deflection pulleys on the mast head 13 of the mast 12. A sleeve-shaped drill guide 16 and / or a tensioning device can be arranged on an underside of the mast 12 near the floor 5.

[0034] To form a splash guard, the additional carriage 40 can be moved into a lower position by means of the displacement device 70, as shown in Figure 2 The drive carriage 20 with the rotary drive 22 is also in a lower position so that the additional carriage 40 can be reached as easily as possible. InIn this position, a web-shaped cover element 50, which in the illustrated embodiment is arranged rolled up in a receiving device 60 on the floor 5, can be rolled out to the additional carriage 40 and releasably fastened there by means of an upper holding device 48.

[0035] By moving the additional carriage 40 upwards by means of the displacement device 70, the web-shaped cover element 50 can be removed from the receiving device 60 and in particular unrolled. After the additional carriage 40 has reached its upper end position and thus an upper covering position for the cover element 50, as shown in Figure 3As shown, a lower end of the cover element 50 can be attached to a lower holding device 38 on the mast 12. In the illustrated embodiment, the lower holding device 38 is attached to the sleeve-like drill guide 16. In the illustrated embodiment, the receiving device 60 can be removed and spaced apart from the civil engineering equipment assembly 10 during further processing.

[0036] A soil cultivation tool 30 can be previously attached to the rotary drive 22. In the illustrated embodiment, this tool can be a drilling tool, in particular a so-called continuous auger. The soil cultivation tool 30 can be introduced into the soil 5 in a preceding work step.

[0037] The drive carriage 20 with the rotary drive 22 and the soil cultivation tool 30 arranged thereon can be moved along the mast 12 with the linear guide 14 via the drive movement device 26 independently of the additional carriage 40, as can be clearly seen from the Figures 4 and 5 emerges.

[0038] During soil cultivation, the soil cultivation tool 30 can be driven in rotation by the rotary drive 22, wherein the cover element 50 extending substantially parallel to the mast 12 forms a splash guard in the clamped position against drilling slurry from the borehole and / or soil particles being thrown out into the environment.

[0039] In the illustrated embodiment, according to the cross-sectional view according to Figure 6 three elongated soil tillage tools 30 are arranged parallel to one another on the drive carriage 20 and are driven in rotation via a common or separate rotary drive 22.

[0040] How to continue Figure 6 As can be seen, the web-shaped cover element 50 can have an approximately C-shaped contour in cross-section, wherein the cover element 50 extends in an arc around at least a partial circumferential region of the soil cultivation tools 30.

[0041] After soil cultivation is complete, the drive carriage 20 can be moved back to its lower starting position. The additional carriage 40 can then be moved back to the lower position directly above the drive carriage 20 to remove the cover element 50. The cover element 50 can then be released from the lower holding device 38, and the lower end of the cover element 50 can be re-received into the receiving device 60. The cover element 50 can then be rolled up again in the receiving device 60 for recycling. The upper end of the cover element 50 can then be released from the upper holding device 48 on the additional carriage 40.

[0042] Alternatively, the cover element 50 can also be detached as a disposable element directly from the lower holding device 38 and the upper holding device 48 and then disposed of.

Claims

1. Civil engineering machine assembly for carrying out a civil engineering method, having - a substantially vertical mast (12), along which a drive carriage (20) with at least one rotary drive (22) is mounted so as to be movable, - at least one elongate ground working tool (30), which, in order to be moved and introduced into the ground (5), is arranged on the rotary drive (22) and is driven in rotation by means of the rotary drive (22), and - at least one cover element (50) that extends along at least part of the mast (12) and which, to form a spray guard, covers at least a section of the circumference of the at least one elongate ground working tool (30), - wherein a separate additional carriage (40) is mounted on the mast (12) above the drive carriage (20), and - an upper holding device (48) for attaching an upper end of the at least one cover element (50) is arranged on the additional carriage (40), characterised in that - the drive carriage (20) with the at least one elongate ground working tool (30) is movable independently of the additional carriage (40), - in that the additional carriage (40) with the attached cover element (50) is movable on the mast (12) into an upper cover position, in which the at least one cover element (50) extends from the upper cover position along the mast (12) down to a lower cover position on or in the vicinity of the ground (5), - in that the additional carriage (40) with the cover element (50) clamped in this way can be held in the upper cover position as a holding position during the civil engineering method, and - in that the drive carriage (20) with the at least one elongate ground working tool (30) is movable relative to the additional carriage (40) with the attached cover element (50).

2. Civil engineering machine assembly according to claim 1, characterised in that the cover element (50) is a flexible web-like element, in particular a film, a fabric or the like.

3. Civil engineering machine assembly according to claim 1 or 2, characterised in that a receiving device (60) for the cover element (50) is provided, in which the cover element (50) is received in a rolled or folded arrangement, and from which the cover element (50) attached to the additional carriage (40) can be pulled off and tracked when the additional carriage (40) moves upwards.

4. Civil engineering machine assembly according to any one of claims 1 to 3, characterised in that a lower holding device (38) is arranged on the mast (12), to which a lower end of the cover element (50) can be attached.

5. Civil engineering machine assembly according to any one of claims 1 to 4, characterised in that the cover element (50) is flat or curved during operation.

6. Civil engineering machine assembly according to any one of claims 1 to 5, characterised in that the ground working tool (30) is designed as a drilling tool for removing ground material and / or a mixing tool for mixing a borehole filling.

7. Civil engineering machine assembly according to any one of claims 1 to 6, characterised in that a plurality of ground working tools (30) are arranged parallel side by side and can be moved with the drive carriage (20).

8. Civil engineering machine assembly according to any one of claims 1 to 7, characterised in that a moving device (70) is arranged for moving the additional carriage (40) along the mast (12).

9. Civil engineering machine assembly according to claim 8, characterised in that the moving device (70) is designed as a cable winch device.

10. Civil engineering method, in particular to be carried out with a civil engineering machine assembly (10) according to any one of claims 1 to 9, having - at least one elongate ground working tool (30), which, in order to be moved and introduced into the ground (5), is rotationally driven by means of a rotary drive (22) and is moved along a substantially vertical mast (12) by means of a drive carriage (20) with the rotary drive (22), and - at least one cover element (50) that is arranged along at least part of the mast (12), wherein at least one peripheral portion of the elongate ground working tool (30) is covered to form a splash guard, - wherein a separate additional carriage (40) is mounted on the mast (12) above the drive carriage (20), and an upper end of the cover element (50) is attached to the additional carriage (40) by means of an upper holding device (48), characterised in that - the additional carriage (40) with the attached cover element (50) is moved on the mast (12) into an upper cover position, in which the at least one cover element (50) extends from the upper cover position along the mast (12) down to a lower cover position on or in the vicinity of the ground (5), - in that the additional carriage (40) with the cover element (50) clamped in this way remains in the upper cover position as a holding position during the civil engineering method, and - in that the drive carriage (20) with the at least one elongate ground working tool (30) is moved relative to the additional carriage (40) with the cover element (50) for ground working.

Images