CN201214992Y - Improved rod rotor - Google Patents

Abstract

The utility model relates to an improved pumping rod rotor which is composed of a rotor main body and a lifting mechanism. A rotating body in the rotor main body is directly made into meshing with a worm and a wormwheel. Steel balls are arranged between the rotating body and a casing to form the axial and the radial supports. Two ends of the worm are provided with sliding bearings. The mean effective diameter of the lower end surface of the rotor is larger than that of the upper end surface, the upper plane skids to achieve the overload protection when in overload. The unidirectional control of the lifting mechanism is locked by the steel balls. The utility model can improve the reliability of the rotor, reduces the production cost, and has remarkable economic benefits.

Description

A kind of improved rod rotor

Technical field

The utility model relates to the oil field pumping well wellhead assembly, particularly a kind of improved rod rotor.

Background technology

Rod rotor (hereinafter to be referred as circulator) is mounted between oil pumper polished rod eye and the polish rod clamp, stroke action is used as power about utilizing oil pumper walking beam or horse head, drive the apparatus that the sucker rod in the oil well rotates by last button direction, work characteristics is: bear pressure big (can reach 100kN), output torque little (less than 1000N.m), input speed extremely slow (about per minute 1 to 2 changes), the self-locking requirement height, and must not twist bad sucker rod.The circulator of prior art is formed by turbine and worm decelerator and as the actuation mechanism of carrying of power input.Worm gear in the turbine and worm decelerator is by the thrust bearing support, and rolling bearing is equipped with at the worm screw two ends respectively, carries in the actuation mechanism being turned to by click control.Prior art has the following disadvantages: one is based on that output torque is little, rotating speed is extremely slow, and worm gear is provided with thrust bearing has increased setting height(from bottom), and has increased cost of production.The 2nd, the worm screw two ends are provided with the self-locking performance that rolling bearing reduced the worm and gear Meshing Pair (because carry actuation mechanism backhaul by the self-locking of worm and gear Meshing Pair as precondition), have also increased cost of production.The 3rd, the click structure of carrying in the actuation mechanism is complicated, and it is many that processing consumes man-hour, also can increase cost.The 4th, the circulator upper end is not obvious less than lower end surface, and the overload in case the down-hole sucker rod is hampered does not have overload protection.

Summary of the invention

The purpose of this utility model will overcome the deficiencies in the prior art part exactly, releases that a kind of layout is compacter, structure is simpler, more reliable performance, process more convenient, the rod rotor that cost is cheaper.Its technical scheme is: a kind of improved rod rotor (hereinafter to be referred as improving circulator) is by the circulator main body and carry actuation mechanism two parts and form, and the circulator main body comprises rotary body, worm screw, housing, supporting steel ball, rear end cap, anti-attrition sheet, drive end bearing bracket and sealing ring, back-up ring, screw.Putting forward actuation mechanism comprises and carries handle, retainer ring, locking steel ball, spring and sealing ring, back-up ring, screw.The rotary body bottom has deep-slotted chip breaker corresponding with deep-slotted chip breaker on the housing, be provided with the supporting steel ball therebetween, the mean screw diameter φ B of lower housing portion end face is bigger than the mean screw diameter φ A of rotary body upper end, drive end bearing bracket of worm screw and rear end cap are directly made sliding bearing with high-abrasive material, are provided with the anti-attrition sheet between the bearing thrust end of worm screw and end cap.The retainer ring of carrying actuation mechanism inside is fixed on the worm screw end, and retainer ring has the off-centre operation cylinder will lock steel ball to be clipped in this face of cylinder and to carry between the interior arc groove, and the locking steel ball is supported by spring, constitutes unidirectional continuous retaining mechanism.

Enforcement of the present utility model will make simpler, the more reliable performance of rod rotor structure, and cost is cheaper, remarkable in economical benefits.

Description of drawings

Fig. 1 looks schematic diagram for a kind of improved rod rotor master of the utility model;

Fig. 2 is the schematic top plan view of Fig. 1;

Fig. 3 is the A-A sectional view of Fig. 2;

Fig. 4 is the retainer ring schematic diagram;

Fig. 5 is the vertical view of Fig. 4.

The specific embodiment

As shown in Figure 1, 2, 3, a kind of improvement circulator comprises the circulator main body and carries actuation mechanism two parts, and the circulator main body is made up of rotary body 3, worm screw 5, housing 1, supporting steel ball 4, rear end cap 6, anti-attrition sheet 7, drive end bearing bracket 8 and sealing ring, back-up ring, screw; Carry actuation mechanism by carry lid 10, carry 11, retainer ring 9, lock steel ball 13, spring 15 and sealing ring, back-up ring, screw is formed.Rotary body 3 bottoms have arc groove corresponding with the arc groove of housing 1, between supporting steel ball 4 be housed constitute axially and radial support, directly having made worm gear 2 on the rotary body 3 is meshed with worm screw 5, drive end bearing bracket 8 of worm screw and rear end cap 6 usefulness high-abrasive materials are directly made sliding bearing, between the bearing thrust end of worm screw 5 and end cap, be provided with anti-attrition sheet 7, in order to reduce axial wearing and tearing, sliding bearing and anti-attrition sheet 7 be provided with the self-locking performance (being reliability) that helps improve the worm and gear Meshing Pair, respectively expose and be furnished with sealing ring between the axis hole and the diameter of axle and constitute airtight lubricated, worm screw 5 front ends with put forward actuation mechanism and link to each other, carry and drive worm screw 5 when carrying on 11 and drive worm gears 2 (rotary body) and press button direction rotation on the sucker rod, carry when falling 11 by deadweight, because the self-locking of worm and gear Meshing Pair constitutes idle stroke, circulator stall.The mean screw diameter φ B of lower housing portion end face is bigger than the mean screw diameter φ A of rotary body upper end, skids between circulator upper surface and the polish rod clamp during overload, realizes overload protection.

Shown in Fig. 2,3,4,5, carry 11 and carry the lid 10 skies be enclosed within worm screw 5 axle heads, carry 11 and carry and have lid retainer ring 9 to be fixed on the worm screw 5 between 10, retainer ring 9 is provided with off-centre operation cylinder 14, carries in 11 and is provided with arc groove 12, constitutes the little space of the big end of an end, be provided with locking steel ball 13 therebetween, locking steel ball 13 is supported by spring 15, and rolling causes locking to the small end space to drive locking steel ball 13 when carrying on carrying 11, rotates thereby drive worm screw 5; When carrying when falling 11 by deadweight, drive locking steel ball 13 and roll to big end spaces moment, remove locking, make worm screw 5 stalls when proposing 11 backhauls, the rotation amplitude of carrying handle is consistent with the rotation amplitude of worm screw.

Claims (2)

1. improved rod rotor, by the circulator main body and carry actuation mechanism two parts and form, the circulator main body comprises rotary body (3), worm screw (5), housing (1), supporting steel ball (4), rear end cap (6), anti-attrition sheet (7), drive end bearing bracket (8) and sealing ring, back-up ring, screw, carry actuation mechanism comprise carry the lid (10), carry (11), retainer ring (9), locking steel ball (13), spring (15) and sealing ring, back-up ring, screw, it is characterized in that: rotary body (3) bottom has deep-slotted chip breaker corresponding with deep-slotted chip breaker on the housing (1), be provided with supporting steel ball (4) therebetween, the mean screw diameter φ B of housing (1) lower end surface is bigger than the mean screw diameter φ A of rotary body (3) upper end, drive end bearing bracket of worm screw (8) and rear end cap (6) are directly made sliding bearing with high-abrasive material, are provided with anti-attrition sheet (7) between the bearing thrust end of worm screw (5) and end cap.

2. a kind of improved rod rotor as claimed in claim 1, it is characterized in that: retainer ring (9) is provided with off-centre operation cylinder (14), carry being provided with arc groove (12) in (11), be provided with locking steel ball (13) therebetween, locking steel ball (13) is supported by spring (15).

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