EP2734707A2

EP2734707A2 - Finished-part track for an inclined conveyor system for mining trucks

Info

Publication number: EP2734707A2
Application number: EP12737552.5A
Authority: EP
Inventors: Holger SETZ
Original assignee: Siemag Tecberg GmbH
Current assignee: Siemag Tecberg GmbH
Priority date: 2011-07-19
Filing date: 2012-07-19
Publication date: 2014-05-28
Anticipated expiration: 2032-07-19
Also published as: CN103842616B; EA201400082A1; WO2013011083A2; BR112014001190A2; CN103842616A; CL2014000141A1; CA2842382C; AU2012285793A1; US20140252102A1; DE102011108093A1; CA2842382A1; DE102011108093B4; UA111366C2; WO2013011083A3; AU2012285793B2; AP2014007384A0; ZA201400315B; KR20140034930A; MA35270B1; EA026169B1

Abstract

The invention relates to a method for producing a finished-part track for an inclined conveyor system having a conveying platform and a counterweight in opencast mining, comprising the following steps: providing a foundation; placing at least one base element, which comprises base members and cross members, onto the foundation; fastening the base element to the foundation; placing track elements onto the base element, while adjustable spacer elements, at least one respective shear cleat, and a support are arranged between the base element and track element; and orienting the track elements relative to one another, with respect to the respective base elements, by means of the spacer elements.

Description

description

Title: Prefabricated carriageway for inclined conveyor system for mining pressure

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 opencast mining, in particular for removing the deposit and advancing in sohlig, occurring in staircase-like paragraphs falling waste mountains, with a correspondingly strong with the increasing depth of excavation down wide excavation funnel forms. During mining operations on the surface of the earth lying over the deposit overburden and then deposit and spoil must be eliminated, including storage and overburden in so-called Strossen, 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 between the rungs are created 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 ever increasing with increasing degradation serpentines are driven upwards at about 10 km / h and down at about 35 km / h, which requires the drivers an extremely high concentration and always carries the risk of serious accidents.

In order to circumvent this problem, inclined conveyor systems have been proposed, with the help of which the dump truck empty transported to the removal parts and are conveyed 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.

[0005] The roadway of the inclined conveyor system which extends into the depth with the inclination of the funnel makes a serpentine ride unnecessary, on the one hand considerably simplifying the working conditions and, on the other hand, at the same time relieving the mining pressure. 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.

The problem of this Schrägförderanlagen, however, is that the sloping lanes must be created by means of in-situ concrete usually, which on the one hand is 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 the claims.

Accordingly, an inclined from the edge of the funnel or open pit on the surface of the earth to the funnel sole extending oblique conveyor system 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 comprises a transport platform drivable by mining pressure and a counterweight, which below This conveyor platform runs 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 guideway of precast elements, 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 basic element is placed on the created foundation. This base element is formed from at least two base plates, which are spaced by at least one cross member and the base plates are connected to the cross member. This connection of the base plates with the cross members can be done by a positive and / or non-positive connection. Advantageous are molded elements in the connection, which are supplemented by screws ben. For this purpose, preferably metal structures are provided both in the base plate and in the cross member at corresponding locations, which are particularly preferably poured in each case. Furthermore, also provided for the connection in the carriers space for the screw (pockets, recesses, etc.) can be filled by a casting with concrete or other suitable material.

For an improvement in stability, it is conceivable to create an adhesion-promoting or -erhöhende intermediate layer of suitable materials between the base member 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 installed in an overlapping area of two adjoining base elements, so that the anchors used there anchor both base elements.

When anchoring the anchors can be introduced to previously prepared structures in the respective base elements, or these structures are only at installation prepared at the installation site. 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 system to be anchored and the substrate quality.

After anchoring is placed on the base element at least one roadway element, preferably at least two roadway elements, and connected to the base member. 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, the structures extending through both the respective roadway element and the base element can. 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 with the aid of spacer elements which are interposed between the base element and the roadway element. Furthermore, then the individual joints or possibly resulting gaps, both between the adjacent base parts, as well as the adjacent roadway parts and lying on the roadway parts, juxtaposed rails filled 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 can be connected to connection structures such as tie rods, threaded connections or by any other conceivable form, force or cohesive connection. Here are also the compounds in question, with which cross member and base plate are connected.

An element of the precast carriageway comprises at least one base carrier, at least one roadway element and a plurality of spacer elements, which between the Base support and the roadway element are arranged to their orientation to each other. Furthermore, at least one push 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 touching surfaces of the sliding knob can be executed unclad from the material of the base support / roadway element, or eg 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 may have at least one structure at the two ends pointing to the next base support, which allows mutually adjacent base supports to be connected to one another preferably by positive locking so that the base support is anchored in the work for its anchoring Foundation no longer needs to be held by additional structures. 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, in the resulting spaces between the cross member and base plates for stiffening shelves can be inserted. These are preferably designed geometrically so that they are held by positive engagement between the base beams and the cross members.

The roadway elements form two differently high levels on each base support 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 the running rail is connected to a lower part of the running rail by a preferably detachable connection. 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 does not have to be laboriously welded on site eg material. 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 track 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 thread spindle with mating nut or threaded sleeve. Such a spacer element is then introduced into a base support or roadway element such that it can be adjusted 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 in question, but also a production of composites is conceivable, which may also have recycled components. On the outsides of the base plates devices for mounting handrails and staircase segments can be provided so that next to the roadway a pedestrian track can be provided.

The aforementioned features of the invention can be arbitrarily combined with one another without deviating from the gist 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 inclined conveyor system according to the invention for mining pressure, which is constructed of prefabricated parts.

FIG. 2 is a perspective sectional view of a finished part of an embodiment of the installation according to FIG. 1.

FIG. 3 is a side view from the outside of a finished part of an embodiment of the installation 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

Figure 1 shows an inclined conveyor system for mining pressure 1, the route 2 is created from the finished parts 5 according to the invention. 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 a, which is typically between 40 ° to 60 °. Figure 2 shows the finished part 5, the main elements of a base member 51 consisting of two base supports 510 (only one shown) and three cross members 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 carrier 510 and in the roadway element 52 and thus connect the elements 510 and 52 so as to be adjustable. The spacers 54 are formed as Trapezdspindelhubwerke. The supports 60 relieve, at least in part, the spacer elements 54 after the spacer elements 54 have been adjusted. The finished part 5 has, as can furthermore be seen in FIG. 2, two raceways A and B. 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 tracks 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 of rails 55 (shown schematically). In this embodiment crane rails of the type DIN 536 A 150 are used.

As can be seen in FIG. 3, the finished part 5 has a push knob, but only the push element formed between the base support 510 and the track element 52 is shown. Knagge 53. Each of the push catches of the finished part 5 has an upper part 53 a and a lower part 53 b. 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 overlapping of the two parts 53a and 53b of the sliding knob has to be so great that even with the maximum distance between the basic carrier 510 and the track element 52 there is a sufficiently large overlapping area in order to transmit the occurring static and dynamic loads.

The track member 52 further includes a plurality of holes 59, in which the anchors are set, which then connect the base member with 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. Furthermore, Figure 3 shows each overlap or engagement areas C and D, over which adjacent finished parts are engaged 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.

Figure 4 shows in cross section the substantially symmetrical structure of the finished part 5. The finished part 5 further comprises two shear force holders 56 and 57, which support the respective track 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 operation of the SchrägfÖrderanlage 1 necessary 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 connection region of the base carrier 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

-I i- claims

1. A method for producing a precast track for an inclined conveyor system with conveyor platform and counterweight in the open pit, with the steps:

• providing a foundation;

Placing at least one base element on the foundation;

Fixing the base element to the foundation;

Placing at least one roadway element on the base element with the interposition of adjustable spacer elements, at least one respective thrust knob and a support between the base element and the roadway element; and

Aligning the roadway elements to each other and to the respective base elements by means of the spacer elements.

2. The method of claim 1, wherein placing the base member comprises the steps of:

Placing at least two base plates on the foundation;

Spacing the base plates by at least two cross members; and connecting the base plates to the cross members to the base member.

3. The method according to claim 1 or 2, are inserted in which between the cross member of the base element shelves.

4. The method according to any one of the preceding claims, wherein after aligning the roadway elements to each other, the respective distance is fixed by the supports.

5. The method according to any one of the preceding claims, wherein the roadway element is placed together with the base member on the foundation, wherein spacer elements, Schubknagge and supports are already interposed between the base member and the roadway element.

6. The method according to any one of the preceding claims, wherein the adjacent base member are connected together in an overlap region.

7. The method according to any one of the preceding claims, wherein the base member is fixed in an overlapping region of two adjacent base elements with the foundation.

8. The method according to any one of the preceding claims, wherein the precast carriageway is laid starting from an upper edge of the opencast mine.

9. Prefabricated carriageway for an inclined conveyor system with conveyor platform and counterweight in surface mining, comprising:

• At least one base element for placement on a foundation;

At least one roadway element for placement on the base element;

A plurality of spacers disposed between the base member and the track member for aligning them with each other; and

At least one sliding knob, arranged between the base element and the roadway element.

10. Prefabricated carriageway according to claim 6, wherein the base element at least consists of:

• At least two base plates to be placed on a foundation; and

At least two cross beams for spacing the base plates, wherein the base plates and cross members have corresponding connection structures.

1 1. precast track according to claim 9, wherein the base carrier has transverse force consoles.

12. precast track according to one of claims 8 to 10, wherein the base support has a handrail and steps.

13. precast track according to one of claims 8 to 11, wherein at least one shelf is inserted between the cross member of the base member.

14. Prefabricated carriageway according to one of the preceding claims, wherein the respective roadway element has at least one running rail, so that in each case two roadway elements at the same level form a track for the conveyor platform or the / the counterweight (s).

15. precast track according to one of claims 8 to 13, wherein the running rail is firmly connected to the roadway element.

16. Prefabricated carriageway according to one of claims 8 to 13, wherein the running rail are in several parts, wherein the multi-part running rail and the roadway element have correspondingly defined attachment structures.

17. Prefabricated carriageway according to one of the preceding claims, wherein the base member has mounting holes which serve to receive ground anchors for fixing to the foundation.

18. Prefabricated carriageway according to one of the preceding claims, wherein the base element and / or the roadway element at their two ends each having connection structures, for a positive engagement with corresponding connection structures on adjacent elements.

19. Prefabricated carriageway according to claim 17, wherein the connecting structures of adjacent roadway parts are provided for screwing with those of the connecting structures adjacent elements.

20. Prefabricated carriageway according to one of the preceding claims, wherein the respective raceways have guide rollers.