CN201802746U

CN201802746U - Anti-off crank pin applied on curved beam pumping unit

Info

Publication number: CN201802746U
Application number: CN2010205020102U
Authority: CN
Inventors: 张子忠; 樊建博; 王雪玲; 郭文红; 李德伟; 王连云; 王栋; 蒋幽君; 杨继忠; 万金涛; 杨淑京
Original assignee: HG PUMPING UNIT Co Ltd
Current assignee: CNPC Bohai Equipment Manufacturing Co Ltd
Priority date: 2010-08-24
Filing date: 2010-08-24
Publication date: 2011-04-20
Anticipated expiration: 2020-08-24

Abstract

The utility model discloses an anti-off crank pin applied on a curved beam pump unit, which comprises a pin body; the end of the pin body is provided with a nut which is matched with the end of the pin body by a thread; the key improvement is as follows: the end of the pin body is also provided with a pressure plate which is parallel with the end surface of the pin body; the pressure plate is fixedly connected with the pin body through three bolts which are vertical to the pressure plate; the bolts are uniformly distributed around the axis of the pin body; and the inner side surface of the pressure plate is provided with at least two positioning columns which are matched with blind holes arranged on the end of the nut. The anti-off crank pin applied on the curved beam pumping unit has the advantages that the end of the crank pin is provided with the pressure plate; the pressure plate is provided with the positioning column and the pressure plate is fixed on the end of the pin body through the three bolts, there restricting the loosing problem of the nut when the pumping unit is used, effectively preventing the crank pin from falling off, and improving the use efficiency and service life of the pumping unit.

Description

A kind of anticreep crank pin that is applied on the curved beam pumping unit

Technical field

The utility model has related to a kind of crank pin, particularly a kind of anticreep crank pin that is applied on the curved beam pumping unit.

Background technique

Along with continually developing of petroleum resources, oil recovery technique is also being updated development, the commonly used equipment of mechanical oil recovery from the beam pumping unit to the submersible electric pump, screw pump etc., of a great variety, but various oil production equipments adaptable working environments of institute and oil well situation are had nothing in common with each other, and beam pumping unit strong with its adaptability, overhaul easily that advantage becomes the main flow equipment that generally uses in the mechanical oil recovery.At present, beam pumping unit commonly used mainly contains: the non-synchronous crank balance beam pumping unit, back-crank pumping unit and conventional beam-pumping unit, analyze as can be known from structure, more than several pumping units all belong to quadratic crank mechanism, in general, comprise in the structure: walking beam, support, horse head, rope hanger, connecting rod, retarder, crank, base and motor, support is connected on the base by means of bolt, walking beam by means of Bearing Installation in cantilever tip, the walking beam front end is installed horse head, rope hanger is fixedly connected on the horse head, and base is provided with motor, and motor is connected with retarder by belt, be arranged on crank and rod hinge connection on the reducer output shaft, the connecting rod the other end is connected with crossbeam, and crossbeam is hinged on the walking beam by the tailing axle bearing, and tailing axle bearing and walking beam tie point are located at the rear with the support tie point.

But, through the beam pumping unit working condition of different structure is analyzed discovery, adopt crank pin to be connected between connecting rod and the crank on the walking beam owing to be connected, between crank pin and the connecting rod bearing is set, crank pin and crank connecting end and its end nut engaged, motoring crank rotation in the using process, thereby drivening rod, and then drive walking beam around its spot wobble, general pumping unit is worked under unserviced situation, and be to continue to carry out work under situation about not breaking down always, crank pin is through after the periodic duty repeatedly, and the nut of its end gets loose easily, the situation that crank pin is taken off very easily occurs, and then cause that pumping unit turns over the generation of machine accident, not only directly influence the pumping unit working efficiency, also can cause damage, influence its working life pumping unit itself, serious also might cause personal injury to the maintainer, brings heavy economic losses to manufacturing enterprise.

The model utility content

The utility model provides the anticreep crank pin on the curved beam pumping unit of being applied in a kind of utilization efficiency that can effectively improve beam pumping unit and working life.

For solving the problems of the technologies described above, the technological scheme that the utility model adopted is: a kind of anticreep crank pin that is applied on the curved beam pumping unit, comprise shank, the shank end is provided with the nut with its screw-thread fit, its key improvements is: the shank end also is provided with the pressing plate that parallels with the shank end face, pressing plate is by fixedlying connected with shank with its three perpendicular bolts, and bolt is uniform around the shank axis, at least two locating columns is set on the pressing plate inner side surface cooperates with the blind hole that nut end is provided with.

Adopt the beneficial effect that technique scheme produced to be: pressing plate to be set in the shank end, locating column is set on the pressing plate, and pressing plate is bolted to the shank end by three, so limited the problem that nut becomes flexible in the pumping unit using process, prevent that effectively crank pin from coming off, improve pumping unit utilization efficiency and working life.

Description of drawings

Fig. 1 is the utility model plan view;

Fig. 2 is the pressing plate plan view;

Fig. 3 is the pressing plate left view.

1, bolt; 2, pressing plate; 2-1, locating column; 2-2, through hole; 3, nut; 4, plain cushion; 5, key; 6, shank; 7, taper hole cover; 8, back-up ring; 9, pitman shaft bearing sleeve; 10, connecting rod; 11, end cap; 12, bearing baffle; 13, bolt; 14, seal ring; 15, bearing; 16, crank.

Further the utility model is described in detail below in conjunction with accompanying drawing.

Embodiment

For making above-mentioned purpose of the present utility model, feature and beneficial effect can become apparent more, below in conjunction with the drawings and specific embodiments among the utility model embodiment, the technological scheme among the utility model embodiment are clearly and completely described.

A kind of anticreep crank pin that is applied on the curved beam pumping unit as shown in Figure 1, comprise shank 6, shank 6 ends are provided with the nut 3 with its screw-thread fit, its key improvements is: shank 6 ends also are provided with the pressing plate 2 that parallels with the shank end face, pressing plate 2 is by fixedlying connected with shank 6 with its three perpendicular bolts 1, bolt 1 is uniform around the shank axis, at least two locating column 2-1 is set on pressing plate 2 inner side surfaces cooperates with the blind hole that nut 3 ends are provided with.

The anticreep crank pin is crank and the connecting rod that is used to connect beam pumping unit, in use, the shank 6 that is connected with the connecting rod 10 of pumping unit by means of bearing 15, shank 6 is provided with bearing baffle 12 with connecting rod 10 connecting ends, bearing baffle 12 is fixedly connected on shank 6 ends by means of bolt 13, shank 6 other ends are processed into taper, conical section is connected with crank 16 with key 5 by means of taper hole cover 7, the end that shank 6 passes crank 16 is provided with screw thread, and the supporting nut 3 that is provided with, cooperate with nut 3 and to be provided with plain cushion 4, nut compresses crank by plain cushion, between described nut 3 and the shank 6 pressing plate 2 is set, as Fig. 2, fixedly connected between pressing plate 2 shown in Figure 3 and the shank 6 by means of bolt 1, three bolts 1 are set between pressing plate 2 and the shank 6, bolt 1 passes the through hole 2-2 that is located on the pressing plate 2 and cooperates along the tapped hole that its axial direction is provided with shank 6 ends, three locating column 2-1 are set on the one side of pressing plate 2 geared nuts 3 to match with the blind hole that is arranged on nut end, three bolts 1 are fixed on shank 6 ends with pressing plate 2, three bolts are in the distribution triangular in shape of shank 6 ends, and the locating column 2-1 that is provided with on the pressing plate matches with blind hole on the nut 3, restriction nut 3 gets loose, thereby prevent that crank pin from coming off, effectively improve pumping unit utilization efficiency and working life.

In concrete application process, connecting rod 10 is provided with pitman shaft bearing sleeve 9 with crank 16 connecting ends, between pitman shaft bearing sleeve 9 and the shank 6 seal ring 14 is set, and end cap 11 is set at pitman shaft bearing sleeve 9 the other ends, end cap 11 is connected pitman shaft bearing sleeve 9 ends by means of bolt, and wherein end cap 11 forms closed cavity with the pitman shaft bearing sleeve and can be used as the lubricating cup that holds the lubricant oil that is used for lubricating bearings 15.

Claims

1. anticreep crank pin that is applied on the curved beam pumping unit, comprise shank (6), shank (6) end is provided with the nut (3) with its screw-thread fit, it is characterized in that: shank (6) end also is provided with the pressing plate (2) that parallels with the shank end face, pressing plate (2) is by fixedlying connected with shank (6) with its perpendicular three bolts (1), bolt (1) is uniform around the shank axis, at least two locating columns (2-1) is set on pressing plate (2) inner side surface cooperates with the blind hole that nut (3) end is provided with.