One walks upright drilling derrick epimere fold mechanism
Technical field
The utility model belongs to technical field of petroleum machinery, relates to one and to walk upright drilling derrick epimere fold mechanism.
Background technology
The drilling derrick of rig of walking upright is upright, under base, transport tire is housed, and under the effect of tractor or self power, can realize removal of home displacement in smooth Oilfield Mining Area entirety.Rig is under whole Transporting state, about highly about 50 meters, in drilling-machine shifter process, need there is no obstruction in the scope of moving direction 50 meters of height, but often spacious You Qu overhead has the obstructions such as the electric aerial cables of net, hampers the entirety removal of home of rig.This just needs rig when designing, and considers the height reducing rig whole transport under specific circumstances, drilling derrick epimere is folded up, reduce derrick height, so that rig can pass through high-altitude obstruction smoothly.
Utility model content
The purpose of this utility model is to provide one and walks upright drilling derrick epimere fold mechanism, solves in prior art and walks upright rig when running into the obstructions such as aerial cables, the problem that cannot pass through.
The technical scheme that the utility model adopts is, one walks upright drilling derrick epimere fold mechanism, and derrick is divided into multistage, wherein in derrick epimere and derrick between epimere,
In derrick epimere front column and derrick, to fix otic placode by two groups of derrick columns hinged for epimere front column, and in derrick epimere rear column and derrick, to fix otic placode by another two groups of derrick columns hinged for epimere rear column; Two derrick epimere front columns are fixed with an oil cylinder respectively and connect otic placode, in two derricks, epimere front column is installed with jointly an oil cylinder brace table, be fixed with an oil cylinder respectively on the both sides, front end of oil cylinder brace table and fix otic placode, each oil cylinder is fixed otic placode and is connected with oil cylinder between otic placode and is connected with an oil cylinder.
The drilling derrick epimere fold mechanism that walks upright of the present utility model, is further characterized in that:
Oil cylinder brace table bottom is provided with support bar.
The beneficial effects of the utility model are, derrick epimere folding from erectility to level can be realized when rig walks upright, realize the auto-folder of derrick epimere, effectively reduce rig shipping height, enable rig smoothly by high-altitude obstruction, arrive new well location smoothly.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model derrick epimere in vertical state;
Fig. 2 is the structural representation of the utility model derrick epimere at folded state.
In figure, 1. derrick epimere front column, 2. derrick epimere rear column, 3. epimere front column in derrick, 4. epimere rear column in derrick, 5. oil cylinder connects otic placode, 6. oil cylinder, 7. oil cylinder brace table, and 8. otic placode fixed by oil cylinder, and 9. otic placode fixed by derrick column.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
With reference to Fig. 1, Fig. 2, structure of the present utility model is, derrick is divided into multistage, wherein in derrick epimere and derrick between epimere, it is hinged that derrick epimere front column 1 and epimere front column 3 in derrick fix otic placode 9 by two groups of derrick columns, and it is hinged that derrick epimere rear column 2 and epimere rear column 4 in derrick fix otic placode 9 by another two groups of derrick columns; On two derrick epimere front columns 1, fixing (welding) has an oil cylinder to connect otic placode 5 respectively, in two derricks, epimere front column 3 is installed with jointly an oil cylinder brace table 7, oil cylinder brace table 7 bottom is provided with support bar, realize support reinforcing by support bar to fix, bear the gravity during lifting of derrick epimere, on the both sides, front end of oil cylinder brace table 7, fixing (welding) has an oil cylinder to fix otic placode 8 respectively, and each oil cylinder is fixed otic placode 8 and is connected with oil cylinder between otic placode 5 and is connected with an oil cylinder 6.
Oil cylinder brace table 7, again can as the workbench safeguarding oil cylinder and dismounting oil cylinder 6 both for supporting fixed oil cylinder 6.Two oil cylinders 6 are connected simultaneously with for pressing system.
The course of work of the present utility model is,
1) when rig walks upright, two oil cylinder 6 piston rods are all in and maximumly stretch out state, and in derrick epimere and derrick, epimere relies on four derrick columns to fix otic placode 9 and hinge is fixed together, and derrick epimere is in vertical state, as Fig. 1.
2) when obstruction place walked by rig, the bearing pin in otic placode 9 fixed by the two groups of derrick columns disassembled in derrick epimere rear column 2 and derrick between epimere rear column 4, slow two oil cylinder 6 piston rods of retracting simultaneously, the bearing pin that two the derrick columns of derrick epimere under the effect of oil cylinder 6 tension in derrick epimere front column 1 and derrick between epimere front column 3 are fixed in otic placode 9 rotates, oil cylinder 6 piston rod is played a supporting role simultaneously, until derrick epimere forwards level to, thus reduce the maximum shipping height of rig, by high-altitude obstruction, as Fig. 2.
3) rig is by after the obstruction of high-altitude, utilize hydraulic coupling that oil cylinder 6 piston rod is slowly stretched out, make derrick epimere under the effect of oil cylinder 6 thrust, the bearing pin relying on two derrick columns in derrick epimere front column 1 and derrick between epimere front column 3 to fix otic placode 9 rotates, derrick epimere is made to be returned to vertical state, as Fig. 1, be namely movable to new well location.