SU15679A1 - A device for clamping and supporting pipes during drilling - Google Patents

Description

By means of two support brackets suspended on the tongues and articulated between themselves, having parts with serrated notches mounted on two axles, one of which carries an earring that is pivotally connected to the lever of the other earring, means to get a clamping and supporting device for pipes drilling so that the supporting device, instead of lifting tg, has, on the free ends of the support brackets, supporting protrusions directed, like ears, obliquely downward. To rotate the support brackets or to open and close the clamping device, the axles are connected to the piston rods of the two hydraulic cylinders.

In FIG. 1 shows a top view of a lifting device; FIG. 2 is a side view of it; FIG. 3 is a view of the device supporting and clamping the pipe when lowering it; FIG. 4 shows a hydraulically driven support device; FIG. 5 is a side view of FIG. four; FIG. 6-section view of the hydraulic drive cylinder.

The proposed device consists of two 34 supporting brackets 10 and 11 hinged on tg articulated: between themselves and having on one side an ordinary eyelet 12, and on the other side of a double forked ear 13. The ordinary and double ears of both brackets are located on opposite sides, so that the ordinary eye of one bracket enters the double eye of the other and turns in it on bolts 14 with a head 15, screwed into the inner parts of the double ears. Each support bracket has a V-shaped recess or recess 16, in which, on the through axis 18, the clamping part 17 is pivotally mounted, having a concave front side 19 provided with a serrated notch serving to grip the pipe and the couplings. To bring the support brackets to the horizon 1, the position in which the pinching parts 17 move apart and the device opens is an angular lever 29 with a handle, mounted on one of the legs 18. On the other axis 18, one end of the earring 30 is swivelly mounted. it is connected to an angular lever by means of a hinge 31 installed at the intersection of the corner portions of said lever. If you turn the lever knob 29 towards

clockwise (fig. 2), then. the support brackets will take an approximately horizontal position, and the clamping portions 17 will open apart. When this position is reached, the hinge 31 will be below the centers of the axes 18, and the pinching parts will maintain this position until the lever is turned; new in the opposite direction. By using the proposed fixture as a supporting device, the blued end of each support bracket instead of lifting lugs 34 is provided with a sticking protrusion 35, directed obliquely downwards, like ears, and each stage 35 has a rounded front side that serves as a support. The action of the device in this case will be the same as when the support brackets are suspended from the lifting tam 34. If the lever 29 is folded back to the position shown in FIG. 3, the support brackets will be screwed out and the clamping parts 17 will not clamp the tube, when moving, the swarm upwards the tooth 19 will not stick into it, because thanks to the hinged joint between the support brackets and their supporting bolts, clamping parts will not impede the movement of the pipe; at the same time, the couplings will also freely pass between the clamping parts. But as soon as the pipe starts moving downwards, the coupling and the pipe, thanks to the above-mentioned hinge joint of the support brackets, will immediately be clamped between the clamping parts 17. And so for example, if an accidental drop of the pipe occurs, the clamping parts and the support-. The brackets will be moved by the friction of the pipe j downwards, as a result of which they will press each other to the other and automatically stop the pipe.

Device for turning the support brackets; those. for opening and closing the clamping device (Fig. 4-6), differs from the previous one in that there is a pair of hydraulic actuators, each of which consists of a sleeve 40, mounted on one of the axes 18 and connected to the hydraulic cylinder 42 and the sleeve 41, sitting on the other axis 18 and connected to the other 43, which enters the cylinder 42. The pipe 44 connected

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to clamps 40 and connected by channel 45 to cylinder 42, pressurized fluid is supplied. To push the compressing parts 17 apart, fluid is supplied through hose 46 to conduit 44 and from there through channels 45 to cylinders 42. Under fluid pressure, the pistons 43 exit the cylinders 42 and force the sleeves 40, 41, and with them the axis 18, to move apart sides, thanks to which the support brackets rotate around their axes. If the fluid pressure is discontinued, the support brackets will turn about their axes down to the closed position. When regulating the discharge of fluid from the cylinders, the brackets can be gradually lowered, and the pipe will be clamped more and more. A control valve and other controls (not shown in the drawing) may be installed at a point far enough from the lifting or supporting device, so that, to service the latter, the worker may not leave his post, usually located on the crane site.

The subject of the patent.

1. A device for clamping and supporting pipes for drilling wells, characterized in that it consists of two, suspended on legs 34, support brackets 10, 11, articulated between themselves and fitted with clamping, having serrated notches, parts (FIG. 4, 5), mounted on axles 18, 18, one of which carries an earring 30, a hinge 31 articulated with a lever 29 on the other axis (Fig. 1-3).

2. Video modification of the device specified in clause 1, characterized in that, for the purpose of using it to support pipes, it is equipped with support lugs 35- instead of lifting lugs 34 (fig. 3).

3. Change of the device specified in paragraphs 1 and 2, characterized in that it is equipped, instead of the earring 30 and the lever 29, with two hydraulic cylinders 42 with pistons and rods 48 connected respectively to the axles 18 (Fig. 4 , 5, 6). E Patent of the in-house company “Giberson Corporation: No. 15679

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fig 4d. of the in-ing company "Giberson Corporation No. 15679