EP2734707B1 - Finished-part track for an inclined conveyor system for mining trucks - Google Patents

Description

Background of the invention

The invention relates to a precast carriageway and their manufacture. More specifically, the invention relates to a precast track for a mining mine for mining pressure in open pit.

The invention finds application in open-pit mining, in particular for the removal of the deposit and the progressing at salvage, occurring in step-like paragraphs mining waste accumulating mountains, which forms a correspondingly strong with the increasing depth of excavation depth down excavation funnel.

In the case of mining operations on the surface of the earth, overburden over the deposit must be disposed of, followed by storage and overburden, including deposits and overburden in so-called stems, i. stepped steps are dismantled. The height of the pile determined by the strength of the soil, the mechanical equipment and economic considerations is on average about 15m. To remove the dissolved material inclined planes are created between the rungs as traffic routes. The deeper the deposit is mined, the larger is the approximately 40 ° to 60 ° upward opening of the resulting excavation funnel. The material to be excavated by drilling or blasting (hard rock, solid ores) as well as the overburden are generally transported away from the mining sites to the earth's surface by means of mining pressure, which are heavy goods vehicles built as dump trucks, via the traffic routes established between the sterns. The increasingly longer with increasing degradation serpentines are driven upwards at about 10 km / h and down at about 35 km / h, which demands the vehicle leaders an extremely high concentration and always carries the risk of serious accidents.

To circumvent this problem, inclined conveyor systems have been proposed, with the help of which the dump truck transported empty to the mining site and are transported up again in the loaded state from the excavator. The inclined conveyor system exists essentially from a driving platform, which can be moved by means of appropriate cables on a sloping roadway up and down.

The inclination of the hopper into the depth reaching roadway of the inclined conveyor makes it a serpentine-driving unnecessary thereby, on the one hand the working conditions much easier and on the other hand, the mining pressure is relieved at the same time. Because a loaded on the funnel sole mining pressure there only needs to be parked on the lowered, equipped with locking means for the wagon wheels platform and is then transported without a driver upwards, where then again rides a driver for further transport. It can thus achieve a very flexible, economic interplay, for the other funnel on the funnel than at the surface of the earth are available.

An inclined conveyor for tippers with a rising travel is from the document US 3,034,669 A known. Furthermore, document discloses DE 4409653 A1 a fixed carriageway for rail-bound traffic and document EP 1873308 A1 discloses a rail system that is laid on concrete slabs.

The problem of the above-mentioned inclined conveyors is that the sloping roads must be created by means of in-situ concrete usually, which is both very expensive and on the other hand makes the extension or modification of the sloping roadway with progressing degradation almost impossible.

Summary of the invention

The invention is therefore an object of the invention to provide a generic conveyor system that can be easily and inexpensively built and installed directly on site.

This object is achieved by the method and the precast carriageway, as defined in claims 9 and 1, solved.

Accordingly, an inclined conveyor system extending from the edge of the funnel or open pit on the surface of the earth to the funnel sole is laid starting from an upper edge of the open pit. In this case, the travel path of the inclined conveyor system in accordance with the invention consists of finished parts. Furthermore, the inclined conveyor system comprises a transport platform drivable by mining pressure and a counterweight, which runs below this conveyor platform in the track. Conveyor platform and counterweight run in this way within the track on different, superimposed raceways, which have rails.

In the method for producing a track from prefabricated parts, a foundation is first provided. The track can be made both from the bottom of the open pit, as well as from an upper edge of the open pit to the sole. This foundation is preferably created from the open pit available overburden or directly in the wall of the mine. At least one base element is placed on the created foundation. This base element is formed from at least two basic carrier, wherein these are spaced by at least one cross member and the base support are connected to the cross member. This connection of the base support with the cross members can be done by a positive and / or non-positive connection. Advantageous are the form elements in the connection, which are supplemented by screws. For this purpose, preferably metal structures are provided both in the basic carrier, and in the cross member at corresponding locations, which are particularly preferably poured in each case. Furthermore, also provided for the connection in the carrier space for the screw (pockets, recesses, etc.) can be filled by a casting with concrete or other suitable material.

To improve the stability, it is conceivable to create an adhesion-promoting or -increasing intermediate layer of suitable materials between the base element and the foundation.

The base element is fixed on the foundation by anchors, which can also extend through the foundation in the grown underground. At least some of these anchorages can be in an overlap area of two together be installed adjacent core elements, so that the anchors anchored anchor both basic elements.

When anchoring the anchors can be introduced to previously prepared structures in the respective base elements, or these structures are prepared only when installed at the installation. Preferably, these structures are holes through which the anchors are introduced into the ground. However, other structures are conceivable with which the anchors are connected. The number of anchors depends primarily on the weight of the plant to be anchored and the nature of the substrate.

After anchoring, at least one roadway element, preferably at least two roadway elements, is placed on the base element and connected to the base element. Alternatively, the base element can be used together with the roadway elements, in which case the structures for the anchors can already be present, or can only be created at the installation location, wherein the structures can extend both through the respective roadway element and through the base element. It is advantageous that the roadway elements for the two tracks are identical parts, so that does not have to be made different parts, stored and installed.

The individual roadway elements are aligned with each other by means of spacer elements, which are interposed between the base element and the roadway element. Furthermore, then the individual shocks or any gaps may be filled, both between the adjacent base parts, as well as the adjacent roadway parts and lying on the roadway parts, adjacent rails and the parts are coupled in this way. This is advantageous, in particular in the case of the rails, since it is thus possible to reduce vibrations of the conveyor platform or of the counterweight.

Furthermore, the respective adjacent base elements and roadway elements with connection structures such as tie rods, threaded connections or by any other conceivable form-, force or cohesive connection can be connected. Come here Also the compounds in question, with which crossbeams and base beams are connected.

An element of the precast carriageway comprises at least one basic carrier, at least one roadway element and a multiplicity of spacing elements, which are arranged between the basic carrier and the roadway element for their orientation relative to one another. Furthermore, at least one sliding knob is provided, which is also arranged between the base support and the roadway element and transmits the static and dynamic loads acting on the roadway element, on the base support / base element and thus on the anchors in the foundation. The thrust pegs are preferably executed centrally and coincidentally with each other, both in the roadway element, as well as the base support. The contacting surfaces of the sliding knob can be unclad from the material of the base support / roadway element, or e.g. be executed with the interposition of metal plates. Furthermore, transverse force brackets are provided on the base support for the transverse forces occurring (not in the direction of travel of the platform / counterweight). These absorb any transverse forces that may occur and transmit them via the anchorages into the foundation.

Also, the base support at the two pointing at laying to the next base support ends have at least one structure that allows adjacent basic support together preferably by positive engagement are connected so that the base support in the work for its anchoring to the foundation no longer by additional Structures must be kept. The underside of the base element, which faces the foundation, can be calculably roughened via inserted or attached strips or similar structures formed on the base element and connected to the foundation or ground by means of local encapsulation. Furthermore, shelves can be inserted into the resulting gaps between the cross member and base support for stiffening. These are preferably geometrically designed so that they are held by positive engagement between the base beams and the cross members.

The roadway elements form on each base support two different levels and, together with another base support in a base element two raceways, which are arranged one above the other due to the different levels and are each formed by two rails. These rails can be connected either directly or through interposed structures with the roadway element. Preferably, the rails are made in two parts, so that an upper part of the track is connected by a-preferably detachable connection with a lower part of the track. This lower part is detachably or firmly connected to the roadway element. For example, the lower part of the running rail -or in the case of a one-piece design, the one running rail-can be cast directly with the roadway element. This has the advantage that a worn upper part of a running rail can be replaced and not complicated on-site, e.g. Material must be welded. Preferably, all rails for the two races each have the same type and size, so that not different types of rails must be kept on the site. The spacer elements are arranged between the base element and the roadway element such that a distance between the two elements can be varied. Furthermore, the spacer elements can be designed so that they are able to transmit the forces acting on the roadway part dynamic and static loads on the base member. Thus, the Schubknagge could be omitted. In a preferred embodiment, a spacer element consists of a trapezoidal threaded spindle with matching nut or threaded sleeve. Such a spacer element is then introduced into a base carrier or roadway element such that it is adjustable and the respective screw part can engage in the nut part in the installed state of both elements. In general, any design of the spacer elements can be used (wedges, hydraulic presses, etc.). The spacers allow accurate alignment of the routes for the platform and the counterweight even with a lower installation accuracy of the base elements. Furthermore, it may be advantageous after the adjustment of the distance to relieve the spacer elements by the use of supports between the roadway element and the base support at least partially.

Furthermore, the roadway element may have lateral force holders, which in turn may carry cable guide rollers. Preferably, each track has its own lateral force holder with cable guide rollers. However, a central shear load holder is also conceivable. Also, separate cable guides are conceivable, which are not designed to transmit the shear forces. The lateral force holders stiffen advantageously together with the transverse force consoles the finished part.

As possible materials for the precast concrete and steel come into question, however, a production of composite materials is conceivable, which may possibly also have recycled components.

Devices for fastening handrails and staircase segments can be provided on the outsides of the base carriers so that a pedestrian path can be provided next to the roadway.

The aforementioned features of the invention can be combined with one another without departing from the essence of the invention. Likewise, it is not necessary that all features be present in one embodiment.

Further features, characteristics and advantages will become apparent from the following description of a preferred embodiment of the present invention with reference to the accompanying figures, which, however, are to be considered as illustrative only and in no way restrictive.

Brief description of the figures

• FIG. 1 is an overview of an inventive Schrägförderanlage for mining pressure, which is constructed of precast.
• FIG. 2 is a perspective sectional view of a finished part of an embodiment of the system according to Fig. 1 ,
• FIG. 3 is a side view from the outside of a finished part of an embodiment of the system according to Fig. 1 ,
• FIG. 4 is a cross-sectional view of a finished part of an embodiment of the plant according to Fig. 1 ,

Detailed description of the embodiment

FIG. 1 shows an inclined conveyor system for mining pressure 1, the infrastructure 2 of the prefabricated parts 5 according to the invention is created. On this track 2 both a conveyor platform 4, which can receive a mining pressure 3, as well as a counterweight 6. The conveyor platform 4 and the counterweight 6 run on superimposed tracks A and B. The inclination of the track 2 is characterized by the angle α, which is typically between 40 ° to 60 °.

FIG. 2 shows the prefabricated part 5, whose main elements are a base member 51 consisting of two base supports 510 (only one shown) and three cross beams 520 (only one shown), and four roadway elements 52 (only two shown). The base member 51 is connected to the lane members 52 via push catches 53 and a plurality of spacers 54 and supports 60. The spacer elements 54 are anchored both in the base support 510 and in the roadway element 52 and connect the elements 510 and 52 thus adjustable. The spacers 54 are formed as Trapezspindelhubwerke. The supports 60 relieve after setting the spacer elements 54 at least partially the spacer elements 54th

The finished part 5 has, as further in FIG. 2 to see two runways A and B on. These tracks A and B are arranged one above the other, so that the counterweight 6 can pass under the conveyor platform 4 when the two meet. The different levels of the tracks are due to the shape of the base support 510 in which the recordings (Schubknaggen, spacer elements, support elements, etc.) for the roadway elements 52 are at different levels. The track width of the inner and lower track for the counterweight 6 is smaller than that of the track for the conveyor platform 4. The tracks A and B each consist of a pair Running rails 55 (shown schematically). In this embodiment crane rails of the type DIN 536 A 150 are used.

As in FIG. 3 5, the finished part 5 has a push knob, but only the push knob 53 formed between the base support 510 and the track element 52 is shown. Each of the push cams of the finished part 5 has an upper part 53a and a lower part 53b. The upper part 53a is located opposite to the lower part 53b so as to be uphill and overlapped with the lower part 53b. Thus, a static and dynamic load on the frictional engagement of the two parts 53 a and 53 b are derived in the respective base support 510 of the base member 51. The push catches are each carried out centrally in the base support 510. The overlap of the two parts 53a and 53b of the sliding knob must be so large that even with the maximum distance between the base support 510 and the track element 52, a sufficiently large overlapping surface is present in order to transmit the occurring static and dynamic loads.

The track member 52 further has a plurality of holes 59 into which the anchors are set, which then connect the base member to the foundation. The number of holes 59 and thus the anchor used per finished part 2 depends mainly on the load to be transmitted, the anchor design and the ground. The holes 59 can already be provided in the production of the finished part, or be created only at the installation site in the open pit, depending on the number of anchors in the corresponding section is needed.

Further shows FIG. 3 each overlap or engagement areas C and D, over which adjacent prefabricated parts engage with each other. Furthermore, transverse force consoles 511 of the basic carrier 510 are shown, which laterally support the roadway element 52 and, together with the transverse force holders 56, stiffen the precast element 5. A handrail 512 is attached to the lateral power consoles 511. Together with a flight of stairs 513, the handrail 512 forms a staircase next to the track of the platform. Section E shows the use of interconnected plates in the push knob.

FIG. 4 shows in cross-section the substantially symmetrical structure of the finished part 5. The finished part 5 further has two lateral force holders 56 and 57, which support the respective raceway A and B. These lateral force holders 56 and 57 prevent deformation of the finished part 5. In addition, in this embodiment, the lateral force holder 56 and 57 carry a plurality of cable guide rollers 58, with which the necessary to operate the inclined conveyor 1 ropes are performed. On the base support 510 side transverse force brackets 511 are shown. Sterkrafthalter 56, 57 and transverse power brackets 511 stiffen the roadway elements 52. By means of the holes 59, both base support 510 and cross member 520 can be anchored. A connecting portion of the base support 510 with the cross member 520 is not shown. Details E and F show concealed plotted the Schubknaggen 53 between the respective roadway elements 52 and the base beams 510th

Claims (20)

1. A method for producing a finished-part track for an inclined conveyor system having a conveyor platform (4) and counterweight (6) in opencast mining, comprising the steps:

   • Providing a foundation;

   • placing at least one base element (51) onto the foundation;

   • fixing the base element (51) to the foundation; characterized by the steps of:

   • placing at least one track element (52) onto the base element with the interposition of adjustable spacer elements (54), at least one shear cleat (53) and one support (60), respectively, between base element (51) and track element (52); and

   • aligning the track elements with one another and with respect to the respective base elements by way of the spacer elements (54).
2. The method according to claim 1, wherein the placing of the base element (51) comprises the following steps:

   • Placing at least two base plates (510) onto the foundation;

   • spacing the base plates (510) by way of at least two cross members (520); and

   • connecting the base plates (510) with the cross members (520) to the base element (51).
3. The method according to claim 2, wherein shelves are inserted between the cross members (520) of the base element (51).
4. The method according to one of the previous claims, wherein after aligning the track elements with one another, the respective space is fixed into place by the supports.
5. The method according to one of the previous claims, wherein the track element, together with the base element, is placed onto the foundation, wherein the spacer elements, shear cleat, and supports are already interposed between the base element and the track element.
6. The method according to one of the previous claims, wherein adjacent base elements are connected to one another in an overlap area.
7. The method according to one of the previous claims, wherein in an overlap area of two adjacent base elements, the base element is fixed in place on the foundation.
8. The method according to one of the previous claims, wherein the prefabricated track is installed beginning at an upper edge of the open pit.
9. A finished-part track for an inclined conveyor system having a conveyor platform (4) and counterweight (6) for opencast mining, comprising:

   • At least one base element (51) for placing onto a foundation;

   • at least one track element (52) for placing onto the base element; characterized by:

   • a plurality of spacer elements arranged between base element (51) and track element (52), for aligning same with one another; and

   • at least one shear cleat (53) arranged between base element (51) and track element (52).
10. The finished-part track according to claim 9, wherein the base element is comprised of at least:

    • Two base plates (510) for placing onto a foundation; and

    • at least two cross members (520) for spacing the base plates, wherein the base plates and the cross members are provided with corresponding connection structures.
11. The finished-part track according to claim 10, wherein the base carrier is provided with shear force consoles (511).
12. The finished-part track according to one of claims 10 or 11, wherein the base carrier is provided with a handrail (512) and steps (513).
13. The finished-part track according to one of claims 10 to 12, wherein at least one shelf is inserted between the cross members of the base element.
14. The finished-part track according to one claims 9 to 13, wherein the respective track element (52) is provided with at least one rail (A, B) so that two track elements each form a track for the conveyor platform (4) or the counterweight(s) (6) on the same level.
15. The finished-part track according to claim 14, wherein the rail (A, B) is fixedly connected to the track element (52).
16. The finished-part track according to one of claims 9 to 14, wherein the rails are of several parts, wherein the multi-part rail and the track element are provided with correspondingly defined fastening structures.
17. The finished-part track according to one of claims 9 to 16, wherein the base element is provided with fastening holes for receiving ground anchors to be fixed in place on the foundation.
18. The finished-part track according to one of claims 9 to 17, wherein the base element and/or the track element is provided with connection structures on both ends for a form-fit engagement with corresponding connection structures on adjacent elements.
19. The finished-part track according to claim 18, wherein the connection structures of adjacent track parts are provided for screw connection to the elements adjacent to the connection structures.
20. The finished-part track according to one of claims 14 to 19, wherein the respective tracks are provided with guide pulleys (58).

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