CN201304633Y

CN201304633Y - Bush removing device

Info

Publication number: CN201304633Y
Application number: CNU2008202205631U
Authority: CN
Inventors: 景天豪; 朱云峰; 白小凯
Original assignee: Sinopec Henan Oilfield Branch Co No 2 Oil Production Plant
Current assignee: Sinopec Henan Oilfield Branch Co No 2 Oil Production Plant
Priority date: 2008-10-31
Filing date: 2008-10-31
Publication date: 2009-09-09
Anticipated expiration: 2018-10-31

Abstract

The utility model relates to a bush removing device. The device comprises a barrel-shaped support saddle with a rotation prohibiting structure, a screw rod helically passing through the center of the bottom of the support saddle, and a round nut screwed with the screw rod on one end of the barrel-shaped opening of the support saddle. The round nut is of a step-shaped cylindrical structure with an outward large end, and tool installing chuck is arranged on the other end of the screw rod; a support saddle screw thread section which matches with the support saddle and a round nut screw thread section which matches with the round nut are arranged on the screw rod, and the screw thread of two screw thread sections are opposite in direction. The bush removing device applicable to the removal of the bush of an oil field beam pumping unit; when construction is carried out, the bush removing device is operated only by one person on ground, thereby achieving simple, convenient and reliable operation, and effectively eliminating potential safety hazard in the operation; at the same time, the labor intensity of workers is also reduced, operating time is reduced, and the end part of the bush is protected against deformation and reject caused by knock.

Description

The lining cannibalized equipment

Technical field

The utility model relates to a kind of crank pins lining cannibalized equipment of oil field with beam pumping unit that be used to remove, and belongs to the oil pumper special tool for service.

Background technology

At present, the crank pins lining often because of transferring stroke, change reduction box and changing reasons such as crank pins, need be extracted with beam pumping unit in process of production in the oil field, this crank pins lining be a two ends band turn edge outward columnar structured.At present, when retracting this lining, adopt in lining one end pad copper rod, the way that hits with a hammer then more.This way has following deficiency: must the position when 1, requiring to pound hammer and pad copper rod accurate, operators'skills is had relatively high expectations; 2, need two people to cooperate at least, and labor intensity of operating staff is big, the operating time is longer; 3, it is serious that hammer is pounded the gasket end distortion of getting off, and often causes lining to scrap.4, need operating personnel to stand in and swing hammer on the reduction box from inside to outside, have unsafe factor.

The utility model content

The purpose of this utility model provides a kind of special-purpose cannibalized equipment that pulls out the oil field with beam type oil pumping machine crank pin lining.

For achieving the above object, the utility model adopts following technical scheme: the lining cannibalized equipment, this device comprises and is barrel-shaped, has the bearing, the coil that only revolve structure and cross the screw mandrel at center at the bottom of the bearing bucket and spinning at the round nut of screw mandrel in barrel-shaped opening one end of bearing, this round nut is to hold greatly towards outer step-like cylindrical structural, and the other end of screw mandrel is the instrument head that is installed; Bearing thread segment that cooperates with bearing and the round nut thread segment that cooperates with round nut are arranged on the screw mandrel, and the screw thread direction of two thread segments is opposite.

Screw mandrel upper bracket thread segment is that left-handed screw thread button-type, round nut thread segment are dextrorotation screw thread button-type.

The drum-shaped structure of described bearing for cutting off along the axis direction symmetry with two parallel cross sections.

Described instrument is installed head for outer six square toes.

The utility model in use, the round nut of lining cannibalized equipment is spun off, screw mandrel is put in the bush hole, to justify then on the nut to screw mandrel, the bearing of lining cannibalized equipment will be sticked in the crank pit, will justify the nut precession and put in place, with the spanner screw mandrel that turns clockwise, because screw thread is one positive one anti-, bearing and circle nut are all extracted lining to intermediary movements, enter in the bearing.The utility model is applicable to that the oil field pulls out lining operation with beam pumping unit, only needing a people to stand in to operate on the ground during construction gets final product, easy to be reliable, potential safety hazard when effectively having eliminated operation, simultaneously, also reduced working strength of workers, reduced the operating time, prevent gasket end because of knock the distortion scrap.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the left view that Fig. 1 is.

The specific embodiment

Fig. 1, lining cannibalized equipment shown in Figure 2 are mainly and pull out beam type oil pumping machine crank pin lining and use.This device comprises and is barrel-shaped, have the bearing 1 that only revolves structure, coil is crossed the screw mandrel at center at the bottom of the bearing bucket and spinning at the round nut 4 of screw mandrel in barrel-shaped opening one end of bearing, this round nut 4 is to hold greatly towards outer step-like cylindrical structural, the other end of screw mandrel is that instrument is installed 5, this instrument is installed and 5 is outer six square toes, certainly, adopt the clamping head of outer square head or other versions also can, but need be suitable with extracting tool, the external diameter of head of being installed should be slightly less than the internal diameter of rest base screwed hole, so as the head that is installed can be smoothly a screwed hole by bearing bucket bottom.The screw thread direction of round nut thread segment 3, two thread segments that the bearing thread segment 2 that cooperates with bearing arranged on the screw mandrel and cooperate with round nut is opposite, and wherein, bearing thread segment 2 is that left-handed screw thread button-type, round nut thread segment 3 are dextrorotation screw thread button-type.

The drum-shaped structure of above-mentioned bearing 1 for cutting off along its axis direction symmetry with two parallel cross sections, see shown in Figure 2, the width of the bearing 1 after cutting off is slightly less than the groove width of beam type oil pumping machine crank outer face, bearing 1 can be sticked in the groove of crank outer face, and then screw mandrel rotation of bearing 1 when preventing to operate; The internal diameter of bearing 1 and the degree of depth of endoporus be respectively greater than the largest contours external diameter and the length of lining, can " shelter oneself " wherein fully after lining is pulled out.The end diameter of step-like round nut 4 is slightly less than the lining internal diameter, can enter like this and play position-limiting action in the bush hole; Outside diameter is slightly less than the lining external diameter, also should be slightly less than the diameter of crank hole simultaneously, so that round nut 4 can be walked out from crank hole smoothly, prevents that simultaneously the round nut retaining is on crank in the operating process.

The step of using this lining cannibalized equipment to pull out beam type oil pumping machine crank pin lining is: spin off round nut → screw mandrel put in the bush hole, base clip on crank pit → load onto round nut → be pulled out with the spanner screw mandrel → lining that turns clockwise.

Claims

1. lining cannibalized equipment, it is characterized in that: this device comprises and is barrel-shaped, has the bearing, the coil that only revolve structure and cross the screw mandrel at center at the bottom of the bearing bucket and spinning at the round nut of screw mandrel in barrel-shaped opening one end of bearing, this round nut is to hold greatly towards outer step-like cylindrical structural, and the other end of screw mandrel is the instrument head that is installed; Bearing thread segment that cooperates with bearing and the round nut thread segment that cooperates with round nut are arranged on the screw mandrel, and the screw thread direction of two thread segments is opposite.

2. lining cannibalized equipment according to claim 1 is characterized in that: screw mandrel upper bracket thread segment is that left-handed screw thread button-type, round nut thread segment are dextrorotation screw thread button-type.

3. lining cannibalized equipment according to claim 1 and 2 is characterized in that: the drum-shaped structure of described bearing for cutting off along the axis direction symmetry with two parallel cross sections.

4. lining cannibalized equipment according to claim 1 and 2 is characterized in that: described instrument is installed head for outer six square toes.

5. lining cannibalized equipment according to claim 3 is characterized in that: described instrument is installed head for outer six square toes.