SU1460185A1 - Elevator - Google Patents

Abstract

The invention relates to the mining industry and is intended for tripping operations during the drilling of wells. The goal is to increase the reliability of work. The elevator includes a housing 1 with a pivotally fixed hinge 2. It has a movable copy a / 12 7 / I but a gripping unit 3 with a copy bevel 8 in its upper part spring-loaded relative to 1. The latter has a locking assembly in the form rotary horizontal axis 11 with a roller 10 and a latch with a spring. The springs 9 of node 3 are made in the form of torsions. Node 3 is connected at free ends and has a bevel 7 on the rear lower part for engagement with a protrusion 12 made in the lower part of the housing 1. The course of the node 3 exceeds the height of the response protrusion 12. During the movement of the node 3 to the right, the lower part moves with some advance an account of the movement of the bevel 7 along the surface of the protrusion 12. The captured drill is lowered into the well. After the pipe is installed, the roller 10 is folded back, the node 3 is in its original position, and the descent process is repeated. 1 3. p. F-crystals, 3 ill. & sl 00 cl} 7 / II

Description

Fig. /

The invention relates to the mining industry, in particular to devices for the mechanization of tripping operations in the drilling of wells, and can be used to lift the drill pipe.

The purpose of the invention is to increase the reliability of operation.

FIG. 1 shows an elevator, longitudinal section; in fig. 2 - fastening of the stop knot with the ends of the torsions; in fig. 3 is a section A-A in FIG. 2

The elevator includes a housing 1 connected pivotally (wasps) with an earring 2. In the slot of the case a copy-gripping unit 3 is inserted, having a gripping landing platform 4, supporting projections 5 and lower safety projections 6, as well as a bevel 7 made on its rear parts. The upper part of the gripping unit has a coping bevel 8 and transverse channels for the free ends of the torsion springs 9. The slot of the housing 1 overlaps with the locking unit in the form of a roller 10 fixed on the horizontal axis 11 and is held in the closed position by a spring latch (not shown) . In the lower part of the housing 1, there is a counter bevel 7, a protrusion 12 of height X, which is less than the value of the vertical stroke Y of the copy-gripping unit 3.

A handle 13 is connected to the copier-gripping unit 3 to lift the latter when the bevel 7 is brought into contact with the protrusion 12. The elevator operates with drill pipes, the connecting locks of which have an annular groove for the grippers.

The elevator works as follows. Before lowering the pipes standing on the candlestick, roller 10 is folded back and a drill pipe is inserted into the slot in the housing 1. At this, the copier-gripping unit 3 is slightly lifted by the handle until the inclined bevel 7 emerges into the area of the protrusion 12 of the housing 1. Subsequently, as the pipe is inserted into the slot of the case, the copier-gripping unit 3 moves to the rear position, cocking the torsion springs 9. When In this case, the movement of the coping-gripping unit occurs in a circle upward by the value established by the adjustment. After inserting the pipe, the roller 10 is closed.

When the elevator is lifted upward, the earring 2 is deflected, turning around an axis, the drill pipe is passed through the elevator. As the coping chamfer 8 goes beyond the end of the drill pipe connecting lock, the copier-gripping unit 3 is moved by the action of torsion springs 9 along the arc of a circle to the right, as a result of which the head of the connecting lock of the drill string is inserted inside the copier-gripper unit 3 before landing on the landing pad 4. Subsequently, the copier-gripping unit 3 continues to move downward relative to the body 1 until the bearing protrusions 5 land on the upper end of the body. During movement of the copier-gripping unit 3 to the right, its lower part moves with some advance due to the fact that bevel 7 moves along the surface of the protrusion 12 having a height X less than the amount of vertical movement. At the end of the torsion spring 9 associated with the copier-gripper node 3. The seized drill pipe is lowered into the well. After the drill string is installed on the basement fork, the elevator is released by tilting the roller 10, the rider 3 is in its original position, and the descent process is repeated.

The lifting of the drill pipe by the elevator is carried out in reverse order. The drill string is gripped by lowering the elevator from above onto the coupling of the raised drill string. At the same time, under the influence of gravity of the body of the elevator, torsion springs 9 are deformed, the crown-gripping unit 3 moves to the left, passes inside the body 1 of the coupling, the coupling. When the elevator starts to lift up, the drill string is captured in the manner described. The drill string is lifted to the candle's tin and detached, followed by placement on a candlestick in the usual way. At the time of setting the candle on the candlestick, the upper end of the connecting lock (coupling) of the drill string acts on the copier bevel 8 and moves the copier-gripper assembly 3 to the left, as a result of which the elevator freely descends down the drill pipe. The descent conditions of the elevator are improved by rotating the roller 10 around the axis 11. At the same time, the presence of the projections 6 prevents the copier-gripping unit 3 from falling out. Further, the tool lifting process is repeated.

Claims (2)

1. Elevator, including a housing with a hinged earring mounted on it, a movably gripping assembly with a copying bevel in the upper part and spring-loaded relative to the housing, a locking assembly in the form of a rotatable horizontal axis with a roller and a latch with a spring, also located in casing, characterized in that, in order to increase the reliability of operation, the springs of the copy-gripping assembly are made in the form of torsions, and the copy-gripping assembly is suspended at their free ends and has a bevel on the rear lower part reacting with mating protrusion formed at the bottom of the housing. 2. An elevator according to Claim 1, characterized in that the progress of the copy-gripping unit vertically exceeds the height of the body response protrusion. Fi.Z