CN2439552Y

CN2439552Y - Block cylinder type polish rod joint

Info

Publication number: CN2439552Y
Application number: CN 00235383
Authority: CN
Inventors: 王自治
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-05-23
Filing date: 2000-05-23
Publication date: 2001-07-18
Anticipated expiration: 2010-05-23

Abstract

The utility model relates to an oil-pumping rope hanging device for sucker rod pumps for oil fields and a hoisting and hanging clamp apparatus of an oil-pumping polished rod. The utility model is composed of a clamp barrel being tightly fixed with two cylindrical ends through screw bolts. A clamp barrel type polished rod clamp has the performances and the characteristics of simple structure, no tooth blocks, no damage on the polished rod, direct change of the diameter of the polished rod when the polished rod is exchanged, no clamp exchange, convenient, rapid and flexible operation, no division of the up, down, left and right directions, convenient operation, no mutual influence of the contacted horse heads, no oil dirt care, and safety. The utility model basically alters the problems of the traditional clamp plate type structural form and complicated structure. The utility model provides a completely novel clamp apparatus for the mechanical oil production of the sucker-rod pump.

Description

Card cartridge type polished rod clamp

The utility model relates to a kind of lifting hangs jig, particularly oil field rod pump mechanical oil recovery pumping unit rope hanger and is connected with suspension between the oil pumping polish rod and uses the polished rod clamp.

Must hang rope hanger with oil pumping polish rod during the oil-field oil pumper oil pumping and be connected, connecting means is: after polished rod penetrates from the rope hanger circular hole from bottom to top, on rope hanger, stamp the polished rod clamp, usually all be referred to as " square clamp ", used what is called side clamp, although varied, principle all is one, and that is exactly " front and back formula clamping plate add the front and back block teeth " to use the tight way of two bolts ropes again.This polished rod clamp one is that block teeth injury polished rod is serious; The 2nd, polished rod vary in diameter, the also necessary corresponding replacing of clamp or card tooth; The 3rd, can not contact with pumping unit " horse head ", above-below direction is fixing can not put upside down; The 4th, greasy dirt influences using effect more; The 5th, the block teeth rapid wear skids dangerous; The 6th, the structure more complicated uses operation more loaded down with trivial details.

In order to overcome the problems referred to above, the common practice is in order to prevent that card dent trauma polished rod from causing break-off accident, the general way of all taking on polished rod, to stamp successively several clamps, make a polished rod clamp again on the polished rod below rope hanger simultaneously, be referred to as safety clamp, disconnected taking off in case take place, the oil pumping polish rod whereabouts in top clamp and polished rod, safety clamp will be located on the blowout prevention box, prevents that polished rod from falling into the accident in the well thereby reach.In test and uninstall process, generally all need stamp clamp on polished rod in addition, the place of making clamp will produce burr, and is necessary with wrong cutter polishing, otherwise the filler of polished rod seal box will be destroyed in moment, causes the oily accident of leaking.About " pincers type polished rod clamp " (the former patent No. is ZL93214936) is advanced at present polished rod clamp, not only broken away from the old model of " clamping plate " basically, and the technical measures of closely-pitched block teeth or block teeth have been taked, the degree of injury of polished rod is alleviated greatly, but problem does not thoroughly solve.

The purpose of this utility model provides a kind of novel anodontia polished rod jig, and it can protect polished rod effectively, does not make polished rod be subjected to any damage, overcomes existing polished rod clamp problem and shortcoming in use simultaneously.

The purpose of this utility model is achieved like this: at card tube two ends and centre three steps of being with circular arcs are arranged, at two external upset (EU)s two socket cap tight fixed bolts are arranged partly, thereby the relative squeezing action of step by two bolts, three band circular arcs makes polished rod produce the tight polished rod of micro-elastic bending deflection rope and keeps firm connection, reaches the oil pumping polish rod purpose that safety hangs under pumping unit rope hanger stand under load situation.

The utility model is because have only three parts, so structure is very simple, also have simultaneously change polished rod time shank diameter become clamp without conversion, clamp itself up and down direction be regardless of use more convenient, intersect to contact with " horse head " and be independent of each other, be not afraid of safe and reliable, the easy to maintenance long-lived advantage of greasy dirt.

Concrete structure of the present utility model is provided by following embodiment and accompanying drawing.

Accompanying drawing 1 is the front view of the utility model " card cartridge type polished rod clamp ".

Accompanying drawing 2 is plan views of the utility model " card cartridge type polished rod clamp ".

Can describe details and working condition in the accompanying drawing 1,2 in detail according to the concrete device that the utility model proposes.

From accompanying drawing 1 as can be seen: this device comprises a card tube main body (1), two and the middle step (4) (5) (6) that three band circular arcs are arranged in the main body card tube, blocking has thickening band (7) (8) outside the tube, having two socket cap tight fixed bolts (2) (3) center line all to pass through main center first together.

From accompanying drawing 2 as can be seen: A/F AB is slightly larger than main body internal channel diameter or width AC, and BC is to be the center of circle with the A point, is the circular arc of radius with AC, is 45 ° of angles between A point and the card tube center line.

When vertically leaning against on the oil pumping polish rod clamp opening AB, polished rod can enter in the main body groove from opening AB, then tight fixed bolt (2) (3) is tightened successively, be critical to making polished rod to a certain degree resiliently deformable in allowed band, what at this moment polished rod was not only blocked is very tight, and it is curved to make polished rod form three roads, thereby reaches oil pumping polish rod and pumping unit rope hanger suspension purpose of connecting.This is the novel jig of update that current structure is the simplest, the operation most convenient fast, has thoroughly been eliminated damage polished rod factor, safety reliability is high.

Claims

1, jig, particularly oil-field oil pumper rope hanger are connected usefulness with the suspension between the oil pumping polish rod polished rod clamp is hung in a kind of lifting, it is characterized in that: card tube (1) has two cylindrical end tight fixed bolts (2) (3) up and down in the one side.

2, polished rod clamp according to claim 1 is characterized in that; In the card tube (1) circle or square trench are arranged, the step (4) (5) (6) of three band circular arcs is arranged in the middle of the two ends in the groove, opening AB is slightly larger than groove internal diameter or width AC, and the A point is 45 ° with card tube axis angle, and thickening band (7) (8) are arranged outward.

3, polished rod clamp according to claim 1 is characterized in that; The center line of bolt (2) (3) is parallel to each other, with the axis normal of card tube (1).