Stick for an excavator

Abstract

The invention relates to a stick ( 14 ) for an excavator, with a stick section ( 51 ) provided at the stick end ( 48 ), which is provided on a stick main section ( 50 ), with an mounting axis ( 17 ) provided at a stick end ( 48 ) of the stick section ( 51 ), on which an mounting device ( 21 ) with an attachment bearing point ( 38 ) of a coupling device ( 33 ) is pivotably mounted about the mounting axis ( 17 ), with a deflector axis ( 29 ) provided adjacent to the mounting axis ( 17 ) at the stick end ( 48 ), with a swivel kinematics ( 27 ), which comprises a swivel axis ( 35 ) on which a deflector ( 28 ) and a coupling ( 31 ) are jointly mounted, the deflector ( 28 ) engaging opposite the swivel axis ( 35 ) on the deflector axis ( 29 ) and the coupling ( 31 ) engaging opposite a coupling bearing point ( 37 ) of the coupling device ( 33 ), wherein a fork-shaped connection ( 20 ) is provided between the stick ( 14 ) and the mounting device ( 21 ) and/or between the swivel kinematics ( 27 ) and the mounting device ( 21 ).

1 . Stick for an excavator,
 with a stick portion provided at the stick end which is provided at a stick main portion,   with a mounting axis provided at a stick end of the stick section on which an mounting device with an attachment bearing point of a coupling device is mounted pivotably about the mounting axis,   with a deflector axis provided adjacent to the mounting axis at the stick end,   with swivel kinematics comprising a swivel axis on which a deflector and a coupling are jointly mounted, the deflector engaging opposite the swivel axis on the deflector axis and the coupling engaging opposite a coupling bearing point of the coupling device   wherein a fork-shaped connection is provided between the stick and the mounting device, the fork-shaped connection between the stick and the mounting device is formed by a fork-shaped stick section pointing towards the stick end, which comprises two fork arms arranged at a distance from one another, and the mounting axis and the deflector axis are provided in the fork arms of the fork-shaped stick section, or   wherein a fork-shaped connection is provided between the swivel kinematics and the mounting device, the fork-shaped arrangement between the swivel kinematics and the mounting device comprises a fork-shaped coupling with two coupling arms which are connected in an articulated manner to the coupling device, and the fork-shaped coupling engages with each coupling arm on a respective outer side or inner side of the cheek of the coupling device.   
     
     
         2 . Stick according to  claim 1 , wherein a distance (HB) between the attachment bearing point of the coupling device and an end face or a flattening of the mounting device and/or a distance (HA) between the coupling bearing point of the coupling device and a cover surface of the mounting device is equal to or less than a factor of 2.5 of a diameter of a bearing bolt of the attachment bearing point and/or of the coupling bearing point of the coupling device 
     
     
         3 . (canceled) 
     
     
         4 . (canceled) 
     
     
         5 . Stick according to  claim 1 , wherein the fork-shaped stick section is straight or cranked relative to the main stick section. 
     
     
         6 . Stick according to  claim 1 , wherein in each case one deflector is mounted on an inner side of the fork arms on the deflector axis and in that the coupling is rod-shaped. 
     
     
         7 . (canceled) 
     
     
         8 . (canceled) 
     
     
         9 . Stick according to  claim 1 , wherein the stick section is designed as a fork-free stick section and a deflector is mounted on the deflector axis in each case on an outer side of the fork-free stick section and the deflectors are mounted on the pivot axis on each outer side of the coupling. 
     
     
         10 . Stick according to  claim 9 , wherein the fork-free stick section is straight or cranked relative to the main stick section 
     
     
         11 . Stick according to  claim 1 , wherein the coupling device is connected in an articulated manner to an attachment bearing point on the mounting axis of the stick section and a coupling bearing point is provided on the coupling device on which a coupling of the swivel kinematics engages and the attachment bearing point is arranged offset relative to the coupling bearing point in the direction of a plane of rotation of a rotary device of the mounting device. 
     
     
         12 . Stick according to  claim 11 , wherein the attachment bearing point is offset from the coupling bearing point by a height (HK). 
     
     
         13 . Stick according to  claim 11 , wherein the attachment bearing point and the coupling bearing point are arranged at an angle (β) to a plane of rotation of the rotary device or parallel to the plane of rotation of the rotary device which results from two fictitious straight lines, wherein one fictitious straight line extends through the coupling bearing point and the attachment bearing point and the other fictitious straight line lies in the plane of rotation or is aligned parallel thereto and extends through the attachment bearing point. 
     
     
         14 . Stick according to  claim 13 , wherein the fictitious straight lines are arranged at an angle (β) of 15° to 45°, or of an angle (β) of 25° to 35°. 
     
     
         15 . Stick according to  claim 1 , wherein the cranked stick section is arranged at an angle (α) to a lower side of the main stick section and the angle (α) is determined by two fictitious straight lines wherein the one fictitious straight line extends through the mounting axis and the deflector axis and the other fictitious straight line extends through the deflector axis and is aligned parallel to the lower side of the main stick section or extends through the deflector axis and the bearing point 
     
     
         16 . Stick according to  claim 15 , wherein the cranked stick section is cranked upwards at an angle (α) of 15° to 45°, or of an angle (β) of 25° to 35°, relative to the lower side or the upper side of the main stick section. 
     
     
         17 . Stick according to  claim 15 , wherein the mounting axis in the cranked stick section is arranged at a distance (HS) from the deflector axis, and the mounting axis lies above the upper side of the main stick section. 
     
     
         18 . Stick according to  claim 11 , wherein the height (HK) between the coupling bearing point and the attachment bearing point corresponds to the height (HS) between the mounting axis and the deflector axis of the cranked stick section. 
     
     
         19 . Stick according to  claim 13 , wherein the angular range of the fictitious straight line of the mounting device and the angular range of the fictitious straight line at the cranked stick portion are equal. 
     
     
         20 . Stick according to  claim 1 , wherein the deflector axis is provided in the transition region between the main stick section and the cranked stick section or in that the deflector axis is provided in the cranked stick section. 
     
     
         21 . Stick according to  claim 1 , wherein the cranked stick section has a length of less than 20% of the total length of the stick. 
     
     
         22 . Stick according to  claim 6 , wherein the coupling is rod-shaped and between two cheeks of the coupling device.