Base beam for supporting a self-propelled derrick rig

Abstract

Improvements to base beams and self-propelled derrick rigs are described. The base beam can have two or more stabilizer arms which can be deployed. The base beam is also designed to support the derrick rig. An optional counterweight assembly can be connected to the front of the rig. The self-propelled derrick rig can be easily and quickly mounted to the base beam, and when mounted, the assembly will be able to withstand high hook loads and wind loading without the danger of the rig coming off of its wheels or falling over.

1 . A base beam used to support a self-propelled derrick rig, comprising:
 a longitudinally extending metal main beam having first and second opposite ends, a front side, a back side, a top and a bottom, the bottom is substantially planar;   the main beam includes a central section approximately midway between the first and second ends thereof, the central section is reinforced between the top and the bottom, and the top of the central section is substantially planar;   first and second swing arms pivotally attached to the main beam, the swing arms are pivotable relative to the main beam between a retracted position where the first and second swing arms are generally parallel to the main beam and a fully extended position where the first and second swing arms are not parallel to the main beam; and   at least one guy attachment point on each of the first and second swing arms.   
     
     
         2 . A base beam as recited in  claim 1 , further comprising a plurality of guy attachment points on the main beam. 
     
     
         3 . A base beam as recited in  claim 1 , each of the first and second swing arms includes a first swing arm end that is pivotally attached to the main beam, and a second swing arm end; and the guy wire attachment point of each of the first and second swing arms is located adjacent to the second swing arm end. 
     
     
         4 . A base beam as recited in  claim 1 , further comprising weights, separate from the material forming the main beam, disposed on the main beam adjacent to each of the first and second opposite ends. 
     
     
         5 . A base beam as recited in  claim 3 , further comprising a stabilizer pad connected to each swing arm adjacent to the second swing arm end; each stabilizer pad is adjustable in height. 
     
     
         6 . A base beam as recited in  claim 1 , wherein the main beam is generally rectangular. 
     
     
         7 . A base beam as recited in  claim 1 , wherein the first and second swing arms are pivotally attached to the main beam so that the first and second arms extend from the front side of the main beam when in the fully extended position. 
     
     
         8 . A base beam as recited in  claim 1 , wherein the first and second swing arms are pivotally attached to the main beam so that the first and second arms extend from the back side of the main beam when in the fully extended position. 
     
     
         9 . A base beam as recited in  claim 7 , further comprising third and fourth swing arms pivotally attached to the main beam, the third and fourth swing arms are pivotable relative to the main beam between a retracted position where the third and fourth swing arms are generally parallel to the main beam and a fully extended position where the third and fourth swing arms are not parallel to the main beam, and the third and fourth swing arms extend from the back side of the main beam when in the fully extended position. 
     
     
         10 . A base beam as recited in  claim 1 , wherein each of the first and second swing arms includes a first section that is pivotally attached to the main beam and a second section that is pivotally attached to the first section. 
     
     
         11 . A base beam as recited in  claim 1 , further comprising first and second mounting fixtures disposed adjacent to the front side and the back side respectively of the main beam adjacent to, and on opposite sides of, the central section. 
     
     
         12 . A base beam as recited in  claim 1 , wherein each of the first and second swing arms has a length, and the combined length of the first and second swing arms is less than the longitudinal length of the main beam. 
     
     
         13 . A base beam used to support a self-propelled derrick rig, comprising:
 a longitudinally extending metal main beam having first and second opposite ends, a front side, a back side, a top and a bottom, the bottom is substantially planar; the main beam includes a central section approximately midway between the first and second ends thereof, the central section is reinforced between the top and the bottom, and the top of the central section is substantially planar;   first and second stabilizer arms attached to the main beam, the stabilizer arms extend from the main beam at an angle to a longitudinal axis of the main beam; and   at least one guy attachment point on each of the first and second stabilizer arms.   
     
     
         14 . A base beam as recited in  claim 13 , further comprising a plurality of guy attachment points on the main beam. 
     
     
         15 . A base beam as recited in  claim 13 , each of the first and second stabilizer arms includes a first stabilizer arm end that is attached to the main beam, and a second stabilizer arm end; and the guy wire attachment point of each of the first and second stabilizer arms is located adjacent to the second stabilizer arm end. 
     
     
         16 . A base beam as recited in  claim 13 , further comprising weights, separate from the material forming the main beam, disposed on the main beam adjacent to each of the first and second opposite ends. 
     
     
         17 . A base beam as recited in  claim 13 , wherein the first and second stabilizer arms extend from the front side of the main beam. 
     
     
         18 . A base beam as recited in  claim 13 , wherein the first and second stabilizer arms extend from the back side of the main beam. 
     
     
         19 . A base beam as recited in  claim 17 , further comprising third and fourth stabilizer arms attached to the main beam, and the third and fourth stabilizer arms extend from the back side of the main beam.