SU1416660A1 - All-purpose power tongs - Google Patents

Abstract

The invention relates to the field of drilling wells and improves the efficiency of the key by increasing the range of pipes and couplings to be gripped. The key includes a lever 1 pivotally connected to it and between each other 6, 8 with shawls 7, suspension and latch t1, with jaws 6, 8 large 13 and 1.4 additional removable jaws are pivotally connected. The articulation of the jaws 6, 8, 13, 14 with the lever 1 is made in the form of an adjusting finger 15. The jaws 6, 8 are fastened around the pipe and snap into place. The force applied to the end of the lever 1 creates a grip. pipes with all jaws 6, 8, 13, tA, Dies 7 create contact voltages for transmitting torque to the pipe or couplings. When increasing the diameters of the pipes covered by the wrench, the center of the key of the key is removed from the section plane of the counterweight. less than 14 jaw 4 silt (L

Description

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The invention relates to the drilling of wells, namely to devices for screwing and unscrewing

The aim of the invention is to improve the efficiency of the key by increasing the range. Spud pipes and couplings

Figure 1 shows the key, general view; Fig 2 - the same, side view; in fig. 3 shows a section A-A in FIG. in Fig about 4 - section BB in Figo-3,

The key consists of a lever 1, on which is mounted an adjustable counterweight 2 with a moving weight 3 and a suspension bracket 4. The hinge 5 is attached to the jaw 6 with a die 70 The main jaw 8 to the die 7 is connected to the lever by means of an adjusting finger 9, the design of which allows fixing him in four pole xv

The key also contains jaw 10 with die 7, latch 11, jaw tooth

12 and a set of additional jaws: large 13 and small 14 ° Jaws, while the rams 7 create the necessary contact voltages that ensure the transmission of rotational moment to the pipe or coupling.

By increasing the diameters covered by the pipe wrench, the weight of the jaw increases accordingly, while the lever weight is constant. At the same time, it is necessary to push the center of the key of the key from the plane of the pipe section, which is achieved by a counterweight.

A change in the diameter of the grip is achieved by introducing a large 13 shsh small 14 additional jaws, which increase the diameter of the coverage by a certain size (, by the inter-axial distance of these jaws), which ensures coverage of the entire stepped row of pipes. To achieve a stepless grip, an additional adjustment element is required - a gap a, which is regulated by the approach of the lever 1 to the main jaw 8 (T, i.e.

These and the latch are pivotally connected to each other with% 5o fingers

The gap and the main jaw and the jaw 6 at the nominal position

 not less than the center distance of the small additional. jaw

lever 1 bb ty,

The key works in the following way, the Adjustable suspension 4 and the counterweight 2 with a displacement load 3 ensure that the key is suspended in a horizontal position. The jaws wind up around the pipe or sleeve and snap into place with the latch 11 and the serrated jaw 1i2,

The force applied to the end of the lever 1 creates a grip of the pipe by all four

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Claims (1)

Invention Formula A universal machine key, including a lever, jaws with dies, a hinge connected to it and between them, a suspension bracket and a latch, characterized in that it is equipped with large and small additional tools to increase the efficiency of the key by increasing the range of the gripped pipes and couplings. removable jaws and an adjustable counterweight placed on the lever, with additional removable jaws pivotally connected to the jaws, and the hinge connection of the main jaw to the lever is made in the form of an adjusting finger -  Jl W-I / V /// ig4 Compiled by Mo Yuriev Editor - But GorvatTechred L. OliynykKorrektor.O. Kravtsov Order 4042/30 Circulation 531 VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d, 4/5 : W. VS AND Subscription