Extraction installation for mineral extraction

Abstract

An extraction machine for an extraction installation is disclosed. The extraction installation may have a chain having a first chain strand section with a first end and a second chain strand section with a second end. The first and second chain ends may be connectable to the extraction machine for moving the extraction machine. The extraction machine may have a first chain mount configured to be connected to the first chain strand section. The extraction machine may also have a second chain mount configured to be connected to the second chain strand section. In addition, the extraction machine may have a first pre-tensioning device for building up a pre-tensioning force acting on the first chain mount such that a pulling force acts on the first chain strand section in the direction of the second chain mount.

1 . An extraction machine for an extraction installation including a chain having a first chain strand section with a first end and a second chain strand section with a second end, the first and second chain ends being connectable to the extraction machine for moving the extraction machine, the extraction machine comprising:
 a first chain mount configured to be connected to the first chain strand section;   a second chain mount configured to be connected to the second chain strand section; and   a first pre-tensioning device for building up a pre-tensioning force acting on the first chain mount such that a pulling force acts on the first chain strand section in the direction of the second chain mount.   
     
     
         2 . The extraction machine according to  claim 1 , wherein the first pre-tensioning device is further configured for building up a pre-tensioning force acting on the second chain mount such that a pulling force acts on the second chain strand section in the direction of the first chain mount. 
     
     
         3 . The extraction machine according to  claim 1 , further comprising:
 a machine body, wherein the first pre-tensioning device is arranged between the machine body and the first chain mount;   a second pre-tensioning device for building up a pre-tensioning force acting on the second chain mount such that a pulling force acts on the second chain strand section in the direction of the first chain mount, wherein the second pre-tensioning device is arranged between the machine body and the second chain mount; and   the first and second chain mounts are movable relative to the machine body.   
     
     
         4 . The extraction machine according to  claim 1 , further comprising:
 a machine body, wherein:
 the first pre-tensioning device is arranged between the first chain mount and the second chain mount; and 
 the first and second chain mounts are movable relative to the machine body. 
   
     
     
         5 . The extraction machine according to  claim 1 , further comprising:
 a machine body including a first machine body part and a second machine body part arranged at a distance from one another and connected to one another fixedly; and   a second pre-tensioning device for building up a pre-tensioning force acting between the second chain mount and the second machine body part such that a pulling force acts on the second chain strand section in the direction of the first chain mount, wherein:
 the first chain mount is arranged on the first machine body part and is movable relative to the first machine body part, 
 the second chain mount is arranged on the second machine body part and is movable relative to the second machine body part; and 
 the first pre-tensioning device is provided for building up a pre-tensioning force acting between the first chain mount and the first machine body part. 
   
     
     
         6 . The extraction machine according to  claim 1 , further comprising:
 a machine body,   wherein in operational use, the first chain mount and the second chain mount are guided movably in guides on the machine body parallel to the direction of movement of the extraction machine.   
     
     
         7 . The extraction machine according to  claim 1 , further comprising:
 a machine body including a first machine body part and a second machine body part movable relative to one another,   wherein the first pre-tensioning device acts and is arranged between the first machine body part and the second machine body part.   
     
     
         8 . The extraction machine according to  claim 7 , further configured such that by varying the distance a restoring force is adjustable in the pre-tensioning device and in a separate restoring device for the machine body parts. 
     
     
         9 . The extraction machine according to  claim 1 , further comprising:
 a machine body;   a traction carriage inserted into a recess in the machine body and provided with a resilient device for both directions of movement of the extraction machine indirectly connectable to the chain via the traction carriage,   wherein the first chain mount, the second chain mount, and the first pre-tensioning device are arranged on the traction carriage.   
     
     
         10 . The extraction machine according to  claim 9 , further comprising a second pre-tensioning device for building up a pre-tensioning force acting on the second chain mount such that a pulling force acts on the second chain strand section in the direction of the first chain mount, and the second pre-tensioning device is arranged on the traction carriage. 
     
     
         11 . The extraction machine according to  claim 10 , further comprising:
 a traction carriage housing for the traction carriage, wherein:   the first pre-tensioning device is arranged between the traction carriage housing and the first chain mount;   the second pre-tensioning device is arranged between the traction carriage housing and the second chain mount; and   the first and second chain mounts are movable relative to the traction carriage housing.   
     
     
         12 . The extraction machine according to  claim 1 , wherein the first pre-tensioning device is arranged between the first chain mount and the second chain mount, wherein the first chain mount and the second chain mount are movable relative to a traction carriage housing for the traction carriage. 
     
     
         13 . The extraction machine according to  claim 9 , wherein the first chain mount and the second chain mount are guided movably in guides on a traction carriage housing for the traction carriage which, in operational use, are arranged so as to be oriented parallel to the direction of movement of the extraction machine. 
     
     
         14 . The extraction machine according to  claim 1 , wherein:
 the first pre-tensioning device comprises at least one spring; and   the second pre-tensioning device comprises at least one spring.   
     
     
         15 . The extraction machine according to  claim 1 , wherein the adjustment travel of the first chain mount and the second chain mount is detected and useable for installation control or drive control. 
     
     
         16 . An extraction installation for mineral extraction, comprising:
 an extraction machine;   a chain including:
 a first chain strand section having a first end; and 
 a second chain strand section having a second end, the first and second chain ends being connectable to the extraction machine; 
   a first chain mount connected to the first chain strand section;   a second chain mount connected to the second chain strand section; and   a first pre-tensioning device configured to generate a pre-tensioning force on the first chain mount such that a pulling force acts on the first chain strand section in the direction of the second chain mount.   
     
     
         17 . A traction carriage for an extraction machine movable by means of a chain with first and second chain ends at respective first and second chain strand sections, the traction carriage comprising:
 a traction carriage body configured to be inserted into a recess in the extraction machine, the traction carriage body being provided with a first chain mount to which the first chain strand section is connectable; and   a resilient device integrated into the traction carriage for both directions of movement,   wherein the first chain mount is subjected by means of a first pre-tensioning device to a pre-tensioning force such that a pulling force acts on a first chain strand section in the direction of the second chain mount.   
     
     
         18 . The traction carriage of  claim 17 , wherein
 the traction carriage body is further provided with a second chain mount to which the second chain strand section is connectable; and   the second chain mount on the traction carriage is subjected by means of the first pre-tensioning device and a second pre-tensioning device to a pre-tensioning force such that a pulling force acts on the second chain strand section in the direction of the first chain mount.   
     
     
         19 . The extraction installation according to  claim 16 , further including:
 a machine body, wherein the first pre-tensioning device is arranged between the machine body and the first chain mount; and   a second pre-tensioning device for generating a pre-tensioning force on the second chain mount such that a pulling force acts on the second chain strand section in the direction of the first chain mount, wherein:
 the second pre-tensioning device is arranged between the machine body and the second chain mount]; and 
 the first and second chain mounts are movable relative to the machine body. 
   
     
     
         20 . The extraction installation according to  claim 16 , further including:
 a machine body;   a traction carriage inserted into a recess in the machine body and provided with a resilient device for both directions of movement of the extraction machine indirectly connectable to the chain via the traction carriage,   wherein the first chain mount, the second chain mount, and the first pre-tensioning device are arranged on the traction carriage.