SU1234601A1 - Device for measuring the movement of drilling rig pulley block - Google Patents

Description

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The invention relates to devices for controlling drilling processes, namely, to measuring displacements of a drilling tool for moving a traveling block.

The aim of the invention is to improve the accuracy of measuring the gear unit with layered rope on the winch drum.

The drawing schematically shows the device.

 The device consists of a housing 1, an input shaft with gear 2, gear 3 and sleeve 4, interconnected by guides 5 of a squirrel cage driving drum, fixed spindle 6 with limiting stops 7, carriage 8 with a lead driver 9 and stop 10, the system input coaxial gears 11 with internal driven drivers 2, a system of intermediate gears 13, a block of output gears 14 on the output shaft 15, an overrunning clutch 16, a friction clutch 17 and a speed sensor 18.

The device works as follows.

In the initial position, in which the rope is laid on the winch drum, the carriage 8 is in the extreme left position, which is fixed by the left stops 7 and 10. In this case, the driving leash 9 and the first inner follower leash 12 at the same side to each other. As the rope is wound, in the first layer on the winch drum, the rotation of the drum is transmitted to the input shaft 2 and gear 3, which causes the carriage 8, which carries a wide driving leash 9, to rotate and move along the lead screw. driven lead 12 slides along it to the right.

Together with the driven driver, its gear rotates, transmitting movement to the output shaft 15. At the moment of terminating the laying of the rope in the first layer, having completed the number of revolutions specified in the configuration, the lead driver 9 abuts the second inner vedo2346012

the driver 12 and is ready to rotate its gear 11 and the output shaft 15 at a reduced speed corresponding to the speed of rotation of the drum during

5 time of laying the rope in the second layer. Upon further movement, since the first and second leads of the followers of the leads 12 are kinematically connected to each other via a gear train 14,

10, the first leash moving at a higher speed than the second, moves forward from the lead leash 9 and no longer collides with it when the carriage 8 goes to the right

15 By screw pitch 6.

Similarly, the rotational speed of the output shaft 15 is switched when the ejector & bottom transition of the rope from layer to layer on the winch drum

20 during the further lifting of the traveling block.

In reverse, when the traveling block moves down, the driver, the leash 9, walks ahead of the respective follower leash 12 and their mutual pressing is provided by an additional parallel circuit with the overrunning clutch 16. and friction clutch 17 ..

Driving half overrunning clutch

The 30 rotating with the squirrel cage, the carriage 8 and the leash 9, carries the right gear 12 into rotation through the friction clutch 17. At the same time, all the driven leads 12, kinematically interconnected through the gears 14, rotate with stepwise increasing relative to each other the other, alternately resting on the lead leash 9, as the rope was taken from the corresponding layer on the drum.

Since the rotational speed of the driven leads 12 is perceived from the drum, made in the form of a white cage, along a parallel kinematic chain and exceeds the speed of the driving lead 9, when the follower driven leads 12 rest in it, the friction clutch begins to slip.

50 coupling 17, protects the mechanism from breakage.

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Editor N.Gorvat

Order 2962/39

Circulation 548 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Compiled by A. Borovitsky

Tehred O.SopkoCorrector I.Erdeyi

Claims (1)

DEVICE FOR MEASURING THE MOVEMENT OF THE DRILLING WINCH FULL BLOCK, comprising a housing, an input shaft, an output shaft with a speed sensor and a gear reducer located inside the housing, characterized in that, in order to increase the accuracy of measuring displacements; tackle block with layer-by-layer laying of a rope on a drawworks drum, the gear reducer consists of a fixed spindle with a movable nut in the form of a carriage with a driving leash, movably connected in the axial direction with the driving drum, a stepped set of output gears rigidly connected to the output shaft, a stepped set intermediate gears, a stepped set of input gears with leads, mounted coaxially with the driving drum with the possibility of engagement with the driving carriage and the kinematic friction link containing friction and overrunning clutch mounted coaxially with the driving drum with the possibility of transmitting frictional torque from the drum to the input gear of the largest diameter, while each of the output gears is meshed with the corresponding intermediate gear, and each intermediate gear is meshed with corresponding input gear of tunable gearbox. “PShZhT