EP3405619B1 - Advance working and loading machine and method for quarrying rock - Google Patents

Description

The invention relates to a propulsion and loading machine with a chassis, an adjustable boom, to which a cultivation implement is exchangeably attached, a loading table, which is arranged on a front portion of the chassis and designed to receive mined rock, and a conveyor, which is centered on the chassis extends from the loading table at the front area to a rear area and is designed to convey off the mined rock to the rear area, according to the preamble of claim 1.

The invention further relates to a method for mining of rock with a propulsion and loading machine, in which with at least one cultivation implement, which is removably attached to an adjustable boom of the propulsion and loading machine, rock is mined, the mined rock is picked up by a loading table , which is arranged on a front region of the chassis of the propulsion and loading machine, and the mined rock is conveyed from the loading table by means of a conveyor via the chassis to a rear region of the chassis, according to the preamble of claim 12.

From the FR 2 342 394 A1 is a mining machine with adjustable arms is known, on which a carrier block is arranged with an alignable cutter.

In the DE 43 35 753 C1 is a hydraulically driven excavating excavator described with a pivoting rocker on which a boom is provided with a tool carrier.

Furthermore, in the ES 8 701 294 A1 describes a tracked vehicle with pivotable arms to which a loading bucket is articulated.

A generic propulsion and loading machine is from the DE 195 22 228 C2 known. There is provided a cantilever arm, which is formed from a plurality of support arms, which are connected in a row via pivot joints. On the boom of this machine are as hydraulic attachments a hydraulic hammer and a backhoe, also called obergriffiges charging system arranged. The backhoe has a direction of the landing gear of the machine receiving area. With the backhoe, mined rock material can be pushed from a working face to a loading table at the front of the landing gear. In this back-pushing of However, rock material can only be transported to the loading table in limited quantities. In addition, when moving larger quantities of rock there is the problem that the rock material laterally passes by the bucket or falls out of the receiving area of the backhoe. Complete removal of the mined rock material with such a backhoe is therefore hardly possible.

Usually, it is common in these known tunneling and loading machines that remains of mined rock material must be shoveled in a complex manner with the backhoe on the loading table. Such reworking to clean the face and bumps are time consuming and costly.

The invention has for its object to provide a propulsion and loading machine and an associated method with which a particularly efficient operation is possible.

The object we achieved on the one hand by a propulsion and loading machine with the features of claim 1 and on the other hand by a method for the degradation of rock with the features of claim 12. Preferred embodiments of the invention are specified in the respective dependent claims.

The propulsion and loading machine according to the invention is characterized in that a cantilever arm has a parallelogram arrangement of levers, wherein at least a first hydraulic cylinder for horizontal adjustment and at least a second hydraulic cylinder are provided for vertical adjustment, and that at least one arcuate support arm is articulated to the parallelogram, wherein a distal end of the support arm, the attachment is attached.

A basic idea of the invention is to distribute the movement functionality of the extension arm to different assemblies. The parallelogram arrangement of levers can be adjusted substantially horizontally via a first hydraulic cylinder. The horizontal adjustment has no or only a relatively small effect on the other orientation of the attachment.

Another aspect of the invention is that a vertical adjustment of the cultivation implement is achieved by an arcuate support arm, which is articulated to the parallelogram. About the second hydraulic cylinder on the parallelogram, the arcuate support arm can be adjusted so that a substantially vertical adjustment of the cultivation implement is achieved regardless of the position of the other assemblies of the boom. As a result, it is relatively easy for a machine operator to reliably move a bucket filled with rock material, for example, in space.

The propulsion and loading machine according to the invention is advantageously further developed in that a cultivation implement is designed as a blade with upward and away from the landing gear blade opening for receiving degraded rock, that the blade has at least a first blade portion and a second blade portion, which for forming a downwardly directed ejection opening are hinged together, and that the cantilever arm is designed for positioning and unfolding the blade over the loading table.

One advantage is to provide a blade with upwardly directed blade opening, as is known for wheel loaders. With such a blade, which is also referred to as a high-bucket, relatively large quantities of rock can be reliably absorbed. The rock may have been solved by the excavator bucket itself or by a previous separate dissolution process, such as a blast or a removal by an attached hydraulic breaker or a mounted tiller. The term "growing implement" is to be understood broadly within the meaning of the invention, and includes picking up of dissolved rock, regardless of how the rock has been released, but also other devices which serve for example for applying shotcrete.

Furthermore, the blade has at least two blade parts, which are hinged together in an upper region. In a first operating and receiving position, the two blade parts are folded and form a closed blade bottom. In this first operating position, a relatively large amount of rock material can be absorbed. The filled bucket can be moved in this first closed operating position with the boom over the loading table. In this position, a folding of the two blade parts can then take place, so that a downwardly directed ejection opening is formed on the blade. Thus, the recorded rock from the bucket targeted fall from the top of the loading table and a conveyor from there on the chassis of the propulsion and Loading machine are transported away to a rear area. The bucket may also be referred to as a flip-top bucket and under-hook loading system.

By this arrangement, mined rock can be picked up very quickly and reliably by the propulsion and loading machine and transported away from the working face. The complex clean loading of working face and joints can be omitted in the propulsion and loading machine according to the invention or at least reduced to a very considerable extent. The machine according to the invention is intended in particular for operation in narrow tunnels and mine routes, preferably for driving on for driving on routes or for the construction of lines in regrowth, by mountain pressure inquillendem mountains.

A preferred embodiment of the propulsion and loading machine according to the invention is that at one end of the cantilever arm, a pivoting device is arranged for pivoting parallel to the vertical axis of the cultivation implement. The pivoting device compensates automatically for the pivoting of the boom by a hydraulic synchronization kinematics, the transverse movements, so that a parallel attitude of the cultivation tool is ensured. This is especially important when drilling the blast holes. In an extended operating position, the attachment ear device can preferably be held parallel to the working face. The pivoting device may have one or more horizontally directed pivoting cylinders for pivoting.

A particularly compact design of the cantilever arm is achieved according to a development of the invention in that the cantilever arm has a parallelogram arrangement of levers. Preferably, the parallelogram can be combined with a toggle lever assembly. It is also possible to provide several parallelogram mechanisms in succession, so that concertina-like folding of the cantilever arm can also be achieved.

A further improvement is achieved according to an embodiment of the invention in that the cantilever arm is rotatably mounted about a substantially vertical axis of rotation on the chassis. As a result, the working range of the boom and thus the cultivation implement is increased.

According to a development of the propulsion and loading machine according to the invention, it is particularly advantageous that in a central region of the chassis a turret is arranged, which is designed for rotatable mounting of the cantilever arm. By a cylindrical base with a pivot bearing a particularly stable rotational connection between the boom and the chassis is achieved. Preferably, a passage for material and equipment may be provided in a side area.

A still compact machine structure is achieved according to an embodiment of the invention in that the conveyor is passed under the turret. The turret with its base represents, so to speak, a bridge over a conveyor belt of the conveyor.

An efficient mode of operation is achieved according to a development in that a quick-change device is arranged at a distal end of the cantilever arm, with which the cultivation implements are detachably connected to the cantilever arm. The quick-change device has elements for rapid mechanical coupling, such as hydraulically adjustable locking bolts. Preferably, the quick-change device can also have electrical and hydraulic connection elements, which enable a quick release and connection of electrical or hydraulic lines.

Basically, the loading table at the front of the chassis can be a substantially rigid plate-shaped element. A preferred embodiment of the invention, however, is that the loading table is adjustable in its inclination. In particular, the loading table can be adjusted from a downwardly inclined operating position into a substantially horizontal or an obliquely upward second operating position when the blade is folded over the loading table and the rock is emptied onto the loading table.

A further improvement in the removal of the mined rock is achieved according to an embodiment of the invention in that the loading table has on its upper side at least one conveying element with which mined rock on the loading table can be conveyed to a conveyor. Conveying elements may preferably be pivotable slides, rotating disks or stars or other feeding elements, which actively conduct excavated rock on the loading table of the conveyor.

The conveyor for conveying the mined rock to the rear of the landing gear may preferably be any continuous conveyor, in particular a chain or belt conveyor. A particularly robust embodiment is achieved according to a development of the invention in that the conveying device comprises a scraper chain conveyor. A chain conveyor is provided with web-shaped driving elements.

In a further embodiment of the invention, it is advantageous that the conveyor has an ejection device in the rear region for discharging the mined rock to a transport device. In this case, the ejection device can be arranged in particular at a raised point on the chassis. This makes it possible to arrange, for example, a dump truck, a lorry, a conveyor belt or other transport element under the ejection device. The mined rock can fall directly into the transport device and then be transported away. Preferably, the ejection device is height adjustable.

The method according to the invention is characterized in that the cantilever arm has a parallelogram arrangement of levers, wherein the parallelogram arrangement is adjusted by at least one first hydraulic cylinder in a substantially horizontal direction, and that at least one arcuate support arm is articulated to the parallelogram assembly and by means of at least one second hydraulic cylinder is adjusted in a substantially vertical direction, wherein at a distal end of the support arm, the cultivation implement is mounted. The parallelogram arrangement preferably consists of two substantially vertically directed levers and two substantially horizontally oriented levers, which are each connected in an articulated manner in several corner areas. Also, a plurality of such parallelograms of four levers may be arranged side by side to form the parallelogram arrangement. The first hydraulic cylinder is arranged on the one hand in a lower corner region of the parallelogram arrangement and on the other hand on an opposite vertical lever for a substantially horizontal adjustment. The second hydraulic cylinder is preferably articulated on the one hand to an upper corner region of the parallelogram arrangement and on the other hand to a short end portion of the arcuate support arm for its vertical adjustment. In this case, the second hydraulic cylinder is preferably directed so that it acts substantially perpendicular to the associated end portion of the support arm.

The method according to the invention can preferably be carried out with a propulsion and loading machine which has been described above. It can be achieved according to the advantages described above.

With regard to the method, the invention is thereby developed further preferably, so that a bucket is used as an attachment working device, which is designed with a blade opening directed upwards and away from the chassis and has at least a first blade part and a second blade part, which form a downward direction Ejection port are hinged together, and that the mined rock is received in the blade, that the blade is moved with the mined rock by means of the cantilever arm in a position above the loading table and that by unfolding the blade, the mined rock through the discharge opening downwards is delivered to the loading table.

A preferred embodiment of the method according to the invention is that the mined rock is conveyed from the loading table by means of the conveyor to a rear region of the chassis and delivered to a transport device. With the conveyor so the mined rock from the front to the rear area is promoted on the chassis. As a result, the tunneling and loading machine can also be used in narrow tunnels or mine routes.

According to a further embodiment of the method according to the invention, it is preferred that the mined rock is transported away from the propulsion and loading machine by means of the transport device. The transport device may be a dump truck or a rail-mounted transport vehicle or a continuous belt conveyor. According to the propulsion while the rail device or the belt conveyor of the propulsion and loading machine can be tracked. In particular, when using a rail device can also be provided a nachrückbare switch in which rail-bound transport vehicles can be redeployed for a final onward transport in Förderrichtuing.

Fig. 1:

eine perspektivische Ansicht einer ersten erfindungsgemäßen Vortriebs- und Lademaschine;

Fig. 2:

eine Seitenansicht der Vortriebs- und Lademaschine gemäß Fig. 1 mit gewechseltem Anbauarbeitsgerät;

Fig. 3:

eine perspektivische Ansicht einer weiteren erfindungsgemäßen Vortriebs- und Lademaschine;

Fig. 4:

eine perspektivische Ansicht zum Betrieb einer erfindungsgemäßen Vortriebs- und Lademaschine unter Tage;

Fig. 5:

eine perspektivische Ansicht einer erfindungsgemäßen Vortriebs- und Lademaschine bei Aufnahme von gelöstem Gestein;

Fig. 6:

eine perspektivische Ansicht der Vortriebs- und Lademaschine von Fig. 5 mit eingefahrenem Auslegerarm, wobei eine Schaufel oberhalb eines Ladetisches angeordnet ist;

Fig. 7:

eine perspektivische Ansicht der erfindungsgemäßen Vortriebs- und Lademaschine von Fig. 6 mit aufgeklappter Schaufel;

Fig. 8:

eine stark verkleinerte Ansicht einer erfindungsgemäßen Vortriebs- und Lademaschine beim Abbau von Gestein in einem Tunnel;

Fig. 9:

eine Seitenansicht einer erfindungsgemäßen Vortriebs- und Lademaschine mit abgesenkter Auswurfeinrichtung;

Fig. 10:

eine Seitenansicht einer erfindungsgemäßen Vortriebs- und Lademaschine beim Umbau eines Anbauarbeitsgerätes;

Fig. 11:

eine vergrößerte Ansicht der Vortriebs- und Lademaschine von Fig. 10 beim Umbau eines Anbauarbeitsgerätes; und

Fig. 12:

eine Seitenansicht der erfindungsgemäßen Vortriebs- und Lademaschine mit einem angebauten Hydraulikhammer.

The invention will be further described by means of preferred embodiments, which are shown schematically in the accompanying drawings. In the drawings show:

Fig. 1:

a perspective view of a first propulsion and loading machine according to the invention;

Fig. 2:

a side view of the propulsion and loading machine according to Fig. 1 with changed attachment working device;

3:

a perspective view of another propulsion and loading machine according to the invention;

4:

a perspective view of the operation of a tunneling and loading machine according to the invention underground;

Fig. 5:

a perspective view of a propulsion and loading machine according to the invention in receiving dissolved rock;

Fig. 6:

a perspective view of the propulsion and loading machine of Fig. 5 with retracted boom, wherein a blade is disposed above a loading table;

Fig. 7:

a perspective view of the propulsion and loading machine according to the invention of Fig. 6 with open blade;

Fig. 8:

a greatly reduced view of a propulsion and loading machine according to the invention in the mining of rock in a tunnel;

Fig. 9:

a side view of a propulsion and loading machine according to the invention with lowered ejection device;

Fig. 10:

a side view of a propulsion and loading machine according to the invention when converting a cultivation implement;

Fig. 11:

an enlarged view of the propulsion and loading machine of Fig. 10 when converting a cultivation implement; and

Fig. 12:

a side view of the propulsion and loading machine according to the invention with a mounted hydraulic hammer.

An advancing and loading machine 10 according to the invention FIGS. 1 and 2 has a chassis 12 with lateral crawler 14. At a front portion of the chassis 12, a wedge-shaped loading table 40 is adjustable about a horizontal Swivel axle stored. The loading table 40 has a central and recessed receiving area 42 for dissolved or removed rock material. About slider-like or rotating conveyor elements 41, 43 at the top of the loading table 40, the rock material is transported to a conveyor 50 which extends centrally from the front to the rear of the chassis 12, slightly rising to an ejector 54. The conveyor 50 is formed in the illustrated embodiment as a circumferential scraper chain conveyor 52 with driver elements.

In a front region of the chassis 12, a cylindrical base 46 of a turret 44 is arranged centrally above the conveyor 50. At the top of the cylindrical base 46, a rotary plate 47 is rotatably supported about a vertical axis of rotation via a rotary bearing. On the rotary plate 47, a boom arm 20 is attached, which will be described in more detail below. The extension arm 20 is pivotally mounted about the turret 44 about the vertical axis of rotation.

At a distal end of the cantilever arm 20, a cultivation implement 30 is replaceably mounted via a quick-change unit 29. The cultivation implement 30 is according to Fig. 1 is formed as a blade 32 with a blade opening 33 directed upwards and away from the chassis 12. At a leading edge of the blade 32 Abtragszähne 38 are arranged.

The blade 32, which may also be referred to as a flip-top or under-grip loading system, includes a first blade portion 34 connected to the quick-change unit 29. A second blade part 35 is articulated hingedly to the first blade part 36 via an upper hinged joint 36. About a non-illustrated locking device, the two blade parts 34, 35 are locked in a folded operating position, which in Fig. 1 is shown. With the blade opening 33 of the blade 32, rock material can be mined which was previously detached from a working face or is released directly from the blade 32 with the removal teeth 38. The opening of the blade 32 can be done by the weight of the rock or motor.

In a first side area, which extends along the conveyor 50 on the chassis 12, a control station 16 is arranged for a machine operator. In this first side area and partly also in the middle area below the conveyor 50, one or more drive and supply units 18 are arranged, which may include the various engines, such as internal combustion engines, hydraulic pumps and hydraulic motors and electrical systems for the individual components of the propulsion and loading machine 10 according to the invention.

In the first side region opposite the second side region extends along the chassis 12, a free space 60 with a first displacement device 61 with a linear guide 62. Along the first linear guide 62, which extends from the front to the rear of the chassis 12, a transport carriage 64 is slidably mounted , The transport carriage 64 is itself formed as a bar-shaped element with a second linear guide 65, in which via a guide shoe 67, a receiving plate 66 is mounted linearly displaceable. A linear displacement of the transport carriage 64 and the receiving plate 66 can be done manually by hand or preferably via non-illustrated linear actuators.

In the embodiment according to Fig. 1 is placed on the receiving plate 66 a drill mount 31 as a cultivation work tool 30. The drill carriage 31 is adjustably mounted on a support 56, which can be coupled via an adapter plate 57 with the quick-change unit 29 on the boom 20.

To insert the drill carriage 31 with a drill drive and a drill string, the bucket 32 is placed over the boom arm 20 on the plate-shaped loading part 40 and decoupled from the quick-change unit 29, as in Fig. 2 is shown.

Then the drill mount 31 via the displacement device 61 of the in Fig. 1 shown parked position with the beam-like transport carriage 64 in a self-supporting position in the area of the loading table 40 driven. In this position, the cantilever arm 20 is now actuated such that the quick-change unit 29 engages the adapter plate 57 on the carrier 56 of the drill carriage 31, so that the cantilever arm 20 is firmly connected to the drill carriage 31. Finally, the cantilever arm 20 can be adjusted so that the drill carriage 31 can be brought into a working position, as in Fig. 2 is shown. In a corresponding manner, the drill carriage 31 can then be returned to the parking position to again attach the bucket 32 to the boom arm 20. Alternatively, a storage of the cultivation implement 30 can also be done on the loading table 40.

At the rear of the chassis 12, a cable tow 13 is arranged to power the propulsion and loading machine 10. Furthermore, a winch 15 is mounted on a transverse slide 17 transversely to the chassis 12 slidably at the rear. A cable 19 of the cable winch 15 can be deflected via a bow-shaped deflecting element 51, which is attached to the rear end of the conveyor 50, such that by means of the winch 15 material can be pulled laterally along the chassis 12 from a front area to a rear area. In a corresponding manner, a further deflection element may also be provided in the region of the extension arm 20, so that with a corresponding deflection of the cable 19 via this further deflection by means of the winch 15 also lifted material onto the loading table and pulled to the front of the propulsion and loading machine 10 can be.

In Fig. 2 Fig. 3 shows the structure of the cantilever arm 20 with a parallelogram arrangement 22 of substantially vertically directed levers 21a and substantially horizontally directed levers 21b. The levers 21 are connected to each other in their corner areas. On the upper horizontal lever 21b of the parallelogram arrangement 22, a curved support arm 24 is pivotably articulated via a lower pivot joint 23. The parallelogram assembly 22 can be pivoted via a first hydraulic cylinder 25 in a horizontal direction. The pivot joint 23 divides the support arm 24 into a short first end portion and a long second end portion. The first free end portion of the support arm 24 is connected to a second hydraulic cylinder 26, which is articulated again to the parallelogram assembly 22 in an upper corner region. The second hydraulic cylinder 26 serves for a substantially vertical adjustment of the support arm 24.

At the opposite end portion of the support arm 24, the plate-shaped quick change unit 29 is hingedly connected via a pivoting device 28. The pivoting device 28 has at least one horizontally directed pivoting cylinder, with which the pivoting device 28 can be pivoted about a vertical pivot axis. As a result, the quick-change unit 29 and a cultivation implement 30 attached thereto can be aligned parallel to a working face independently of a pivoting angle of the extension arm 20. Along the support arm 24 are at least one break cylinder 27 in a neck cylinder arrangement on the one hand with the quick-change unit 29 and on the other hand articulated to the parallelogram 22 of the first lever 21.

According to Fig. 3 a further embodiment of a propulsion and loading machine 10 according to the invention is shown. This embodiment corresponds to the essential components of the first embodiment according to FIGS FIGS. 1 and 2 , wherein identical or functionally identical parts are provided with the same reference numerals and are not described further.

In contrast to the previously described embodiment, the operator station 16 is designed as a cab. In addition, the free space 60 is formed as a passage, wherein the displacement device 61 extends over the entire length of the driving tool 12.

On the receiving plate 66, a lifting device 68 is arranged, which is shown schematically as a laying crane. The lifting device 68 is rotatably arranged via a pivot bearing 69. The clearance 60 is formed overall such that a passage is formed in the second side area above the landing gear 12. By means of the free space 60, in particular materials such as tools, accessories can be transported from the rear area to the front area and back by means of the transport carriage 64 and the lifting device 68, even if the propulsion and loading machine 10 operates in a narrow tunnel.

A typical operating position of a propulsion and loading machine 10 according to the invention in a tunnel 1 is in Fig. 4 shown. With the cultivation implement 30 at the distal end of the extension arm 60, rock can be released and / or received at a working face 2 or the sole 3 of the tunnel 1. The ridges 4 of the tunnel 1 is supported in a known manner by expansion arches 8. According to the tunneling further expansion arches 8 of the working face 2 are to be installed following. Excavated rock is conveyed away from a front region of the loading and driving machine 10 according to the invention obliquely rearwardly above the conveyor 50 and discharged via an ejector 54 to a transport device 70.

In the illustrated embodiment, the transport device 70 is formed as a dump truck 72 with a dump body 74. Basically, however, are others Transport equipment, such as rail-bound or continuously conveying conveyor belts possible.

An operation of the propulsion and loading machine 10 according to the invention and a method according to the invention for the excavation of rock are described in connection with FIGS FIGS. 5 to 7 explained in more detail. It shows Fig. 5 a first operating position of the propulsion and loading machine 10 according to the invention with the drive and supply units 18 in the first side area. In this operating position, the boom arm 20 is extended with the blade 32 to the front for the removal and in particular for receiving rock material.

According to Fig. 5 It can be seen that the cantilever arm 20 via hinges interconnected lever 21, which form a parallelogram 22, which is mounted on the rotary plate 47 of the turret 44. At the parallelogram 22 of the first articulated lever 21, a bow-shaped support arm 24 is pivotally articulated via a lower pivot joint 23. The pivot joint 23 divides the support arm 24 into a short first end portion and a long second end portion. The first free end portion of the support arm 24 is connected to a second hydraulic cylinder 26, which in turn is articulated to the parallelogram 22 of the first lever 21. The first hydraulic cylinder for horizontal adjustment is omitted for clarity. The opposite end portion of the support arm 24 is pivotally connected to the quick change unit 29. Along an upper side of the C-shaped support arm 24, two break cylinders 27 are arranged for actuating the bucket 32. The break cylinder 27 are articulated in a neck cylinder assembly on the one hand with the quick change unit 29 and on the other hand with the parallelogram 22 of the first lever 21.

In the first operating position, the blade 32 is closed with the first blade part 34 and the second blade part 35, so that rock can be received via the blade opening 33.

According to Fig. 6 the thus received rock material is retracted in the manner of a high spoon of the blade 32 by retracting or folding the boom 20 back to the chassis 12. In this retracted operating position, the blade 32 is located immediately above the loading table 40 with the recessed receiving area 42.

Thereafter, the bucket 32 may be opened to form a downwardly directed discharge opening 37, as in FIG Fig. 7 is shown. For this purpose, the first blade part 34 and the second blade part 35 are unlocked from each other, wherein subsequently the second blade part 35 can be pivoted by a non-illustrated actuating cylinder to the hinged joint 36 upwards. The rock material located in the blade 32 drops down through the discharge opening 37 into the receiving area 42 of the loading table 40. From there, the rock material can be picked up by the conveyor 50, for example by an up-flapping of the loading table 40 and back to the rear area be transported to a transport device 70. In the exemplary embodiments illustrated, the transport device 70 is designed as a rail system 76 with a plurality of rail-bound transport carriages 78.

In Fig. 8 a tunnel 1 with a rail system 76 according to the invention is shown in more detail. The rail system 76 may preferably have a switch region 80 in which the rail-bound transport carriages 78 can be arranged in two mutually parallel rail regions. Furthermore, a changing station 82 can be provided in the tunnel 1 at a rearward position, on which interchangeable equipment can be stored laterally or in a ceiling area. For a reversing of the propulsion and loading machine 10 according to the invention in the area of the changing station 82, the conveyor 50 and in particular the ejector device 54 arranged in the rear area can be lowered downwards. As a result, unwanted collisions with a ceiling area in the tunnel 1 can be avoided, as clearly in Fig. 9 is shown. Fig. 9 In addition, the parallel arrangement 22 of the first lever 21 of the extension arm 20 can be seen again.

A change of cultivation implements 30 will be described below in connection with FIGS. 8 to 10 explained. In this case, first the original cultivation implement 30 can be raised by the cantilever arm 20 in a ceiling area of the tunnel 1, as in Fig. 9 is indicated. In such a position, the cultivation implement 30 may be delivered to a hanger 83. The suspension device 83 is in accordance with the representation of Fig. 11 arranged in a central or a lateral area on the ceiling of the tunnel 1. After hanging the cultivation implement 30 to the suspension device 83, the connection to the boom 20 can be solved via the quick-change unit 29. Then the cantilever arm 20 are moved to a new mounted attachment, as shown schematically in Fig. 10 is shown. It can then be a coupling with the new cultivation implement, which, as shown by Fig. 12 a hydraulic hammer 31 may be.

How out Fig. 11 can be seen, it can also be done in a narrow tunnel 1, whose cross section is only slightly larger than a cross section of the propulsion and loading machine 10 according to the invention, a passing of the cultivation equipment 30 on the chassis 12 in the region of the passage 60.

Claims (15)

1. Tunneling and loading machine, comprising

   - a chassis (12),

   - an adjustable jib arm (20), to which an attachment apparatus (30) is attached in an exchangeable manner,

   - a loading table (40), which is arranged on a front region of the chassis (12) and is designed to receive mined rock, and

   - a conveying means (50), which extends centrally on the chassis (12) from the loading table (40) on the front region as far as a rear region and is designed to convey away the mined rock to the rear region,

   - a jib arm (20) having a parallelogram arrangement (22) of levers (21), at least a first hydraulic cylinder (25) being provided for horizontal adjustment of the parallelogram arrangement (22),

   characterized in that

   - at least a second hydraulic cylinder (26) is provided for vertical adjustment of an arcuate support arm (24),

   - in that at least the arcuate support arm (24) is hinged on a lower pivot joint (23) for vertical adjustment on the parallelogram arrangement (22),

   - in that the lower pivot joint (23) divides the arcuate support arm (24) into a first, short end portion and a second, long end portion,

   - in that the second hydraulic cylinder (25) is hinged on an upper corner region of the parallelogram arrangement (22) and is connected to the first, short end portion of the arcuate support arm (24) and

   - in that the attachment apparatus (30) is attached at a distal end of the arcuate support arm (24).
2. Tunneling and loading machine according to claim 1,
   characterized in that

   - the attachment apparatus (30) is in the form of a bucket (32) having a bucket opening (33) which is directed upward and away from the chassis (12) for receiving mined rock,

   - in that the bucket (32) comprises at least a first bucket part (34) and a second bucket part (35) which are interconnected in a folding manner to form an ejection opening (37) which is directed downward, and

   - in that the jib arm (20) is designed to position and unfold the bucket (32) over the loading table (40).
3. Tunneling and loading machine according to claim 1 or 2,
   characterized in that
   at one end of the jib arm (20), a pivoting means (28) is arranged for vertically pivoting the attachment apparatus (30).
4. Tunneling and loading machine according to any of claims 1 to 3,
   characterized in that
   the jib arm (20) is mounted on the chassis (12) so as to be able to rotate about a substantially vertical axis of rotation.
5. Tunneling and loading machine according to claim 4,
   characterized in that
   in a central region of the chassis (12), a rotating tower (44) is arranged, which is designed for rotatably mounting the jib arm (20).
6. Tunneling and loading machine according to claim 5,
   characterized in that
   the conveying means (50) is guided under the rotating tower (44).
7. Tunneling and loading machine according to any of claims 1 to 6,
   characterized in that
   at a distal end of the jib arm (20), a quick-change means (29) is arranged, to which means the attachment apparatus (30) is detachably attached to the jib arm (20).
8. Tunneling and loading machine according to any of claims 1 to 7,
   characterized in that
   the inclination of the loading table (40) can be adjusted.
9. Tunneling and loading machine according to any of claims 1 to 8,
   characterized in that
   the loading table (40) comprises at least one conveying element on the upper side thereof, by means of which element mined rock on the loading table (40) can be conveyed to the conveying means (50).
10. Tunneling and loading machine according to any of claims 1 to 9,
    characterized in that
    the conveying means (50) comprises a scraper chain conveyor (52).
11. Tunneling and loading machine according to any of claims 1 to 10,
    characterized in that
    the conveying means (50) comprises an ejection means (54) in the rear region for discharging the mined rock to a transport means (70).
12. Method for mining rock by means of a tunneling and loading machine (10), in particular according to any of claims 1 to 11, in which,

    - by means of an attachment apparatus (30), which is attached in an exchangeable manner to an adjustable jib arm (20) of the tunneling and loading machine (10), rock is mined,

    - the mined rock is received by a loading table (40) which is arranged on a front region of a chassis (12) of the tunneling and loading machine (10), and

    - the mined rock is conveyed by a conveying means (50) from the loading table (40) over the chassis (12) to a rear region of the chassis (12),

    - the jib arm (20) comprising a parallelogram arrangement of levers (21), the parallelogram arrangement (22) being adjusted in a substantially horizontal direction by at least a first hydraulic cylinder (25),

    characterized in that

    - at least one arcuate support arm (24) is hinged on the parallelogram arrangement (22) on a lower pivot joint (23) and is adjusted in a substantially vertical direction by means of at least a second hydraulic cylinder (26),

    - the lower pivot joint (23) dividing the arcuate support arm (24) into a first, short end portion and a second, long end portion, and

    - the second hydraulic cylinder (26) being hinged on an upper corner region of the parallelogram arrangement (22) and being connected to the first, short end portion of the arcuate support arm (24), and

    - the attachment apparatus (30) being attached at a distal end of the arcuate support arm (24).
13. Method according to claim 12,
    characterized in that

    - a bucket (32) is used as the attachment apparatus (30), which bucket is formed with a bucket opening (33), which is directed upward and away from the chassis (12), and comprises at least a first bucket part (34) and a second bucket part (35) which are interconnected in a folding manner to form an ejection opening (37) which is directed downward,

    - in that the mined rock is received in the bucket (32),

    - in that the bucket (32) having the mined rock is moved into a position above the loading table (40) by means of the jib arm (20), and

    - by unfolding the bucket (32), the mined rock is discharged through the ejection opening (37) downward onto the loading table (40).
14. Method according to claim 12 or 13,
    characterized in that
    the mined rock is conveyed by the conveying means (50) from the loading table (40) to a rear region of the chassis (12) and discharged to a transport means (70).
15. Method according to claim 13,
    characterized in that
    by means of the transport means (70), the mined rock is transported away from the tunneling and loading machine (10).

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