CN2342089Y

CN2342089Y - Rotary type rope suspending device

Info

Publication number: CN2342089Y
Application number: CN 98209355
Authority: CN
Inventors: 李伟; 王渝明; 邓元富; 解学志
Original assignee: NO 5 OIL PRODUCTION FACTORY DAQING OIL ADMINISTRATION
Current assignee: NO 5 OIL PRODUCTION FACTORY DAQING OIL ADMINISTRATION
Priority date: 1998-04-20
Filing date: 1998-04-20
Publication date: 1999-10-06
Anticipated expiration: 2008-04-20

Abstract

The utility model discloses a rotary type rope suspending device which solves the problem of rod breaking or tripping caused by that the existing rope suspending device can not rotate and the torsion borne by an oil pumping rod can not be released. The rotary type rope suspending device is characterized in that an enduring element and a bearing box are designed; a thrust bearing is arranged between the enduring element and the bearing box, a conical bearing is arranged between the enduring element and an upper plate body, a square clamp is seated on the enduring element after clamping a polished rod, the enduring element corresponding to the bearing box and the upper plate body can rotate, and consequently the polished rod and the oil pumping rod, which correspond to the rope suspending device, can rotate. The rotary type rope suspending device can release the borne torsion, avoid rod breaking and tripping and reduce the economic loss.

Description

Turnable polished rod eye

The utility model relates to the polished rod eye that promotes polished rod on a kind of oil-field oil pumper, belongs to turnable polished rod eye.

At present, existing oil pumper polished rod eye is to clamp the polished rod seat on the polished rod eye upper plate body with square clamp, plays the effect of lifting by the polished rod eye interstitial hole; Because polished rod and bottom rod weight are big, the square clamp seat of clamping polished rod is on the polished rod eye upper plate body time, and the frictional force between square clamp and the upper plate body is very big, and the two can not rotate mutually; On the other hand, owing to the swing of underground reason or two wire rope causes sucker rod self to bear torsion, but since polished rod eye can not rotate, thereby torsion can't discharge, and causes disconnected bar of sucker rod or dropout, increased the operation number of times of repairing oil well, expensive time-consuming, bring economic loss.

The purpose of this utility model is exactly to provide a kind of turnable polished rod eye that can discharge the suffered torsion of sucker rod at above-mentioned deficiency of the prior art.

The purpose of this utility model reaches by the following technical programs: this turnable polished rod eye, form by upper plate body, lower body and adjusting ejector pin, be characterized in: intrinsic bearing box above the upper plate body, the mesopore of upper plate body and bearing box is built-in with the bearing piece of band mesopore, thrust bearing and sealing ring are housed between bearing box and bearing piece, between upper plate body and bearing piece conical bearing is housed, the conical bearing outer end is blocked with two back of the body caps, between external cap and upper plate body sealing ring is housed.

The utility model compared with prior art has following advantage: owing between bearing box and bearing piece thrust bearing is housed, between upper plate body and the bearing piece conical bearing is housed, thereby clamp the polished rod seat after on the bearing piece at square clamp, bearing piece can freely rotate with respect to bearing box and upper plate body by the side's of drive clamp, thereby make polished rod and bottom sucker rod freely rotate with respect to polished rod eye, discharge the suffered torsion of sucker rod, avoid disconnected bar of sucker rod or dropout, reduce economic loss.

Accompanying drawing 1 is the structure chart that partly cuts open of the present utility model;

Accompanying drawing 2 is A-A sectional views of the utility model Fig. 1.

The utility model is described in further detail below in conjunction with accompanying drawing:

By Figure 1 and Figure 2, this turnable polished rod eye, form by upper plate body 1, lower body 14 and adjusting ejector pin 16, regulating ejector pin 16 is fixed on the lower body 14 with screw thread, the upper end places in the pit of upper plate body 1 lower surface, all has groove on the ear of upper plate body 1 and lower body 14, built-in wire rope 13, and block with locking pin 15 and lock pin 12, square clamp 10 is clamped polished rod 11; The characteristics of this polished rod eye are: intrinsic bearing box 4 above the upper plate body 1, the mesopore of upper plate body 1 and bearing box 4 is built-in with the bearing piece 2 of band mesopore, thrust bearing 5 and sealing ring 3 are housed between bearing box 4 and bearing piece 2, between upper plate body 1 and bearing piece 2, conical bearing 6 is housed, conical bearing 6 outer ends are blocked with two back of the body caps (8,9), between external cap 9 and upper plate body 1 sealing ring 7 are housed.During use, polished rod 11 is passed the mesopore of lower body 14 and bearing piece 2, clamp with square clamp 10, square clamp 10 is clamped back seat on bearing piece 2, can realize that polished rod 11 and sucker rod freely rotate with respect to polished rod eye.

Claims

1, turnable polished rod eye, form by upper plate body (1), lower body (14) and adjusting ejector pin (16), it is characterized in that: intrinsic bearing box (4) above the upper plate body (1), the mesopore of upper plate body (1) and bearing box (4) is built-in with the bearing piece (2) of band mesopore, thrust bearing (5) and sealing ring (3) are housed between bearing box (4) and bearing piece (2), between upper plate body (1) and bearing piece (2), conical bearing (6) is housed, conical bearing (6) outer end is blocked with two back of the body caps (8,9), between external cap (9) and upper plate body (1) sealing ring (7) is housed.