阅读说明：本技术 一种游梁式抽油机支撑轴总成 (Beam-pumping unit back shaft assembly ) 是由 何瑞武 王民山 陈建平 李鹏 王凤欣 邢炳利 于 2019-10-28 设计创作，主要内容包括：本发明公开的是一种游梁式抽油机支撑轴总成,可提高石油工业游梁式抽油机支撑轴总成的润滑效果。本支撑轴总成包括动轴承座、定轴承座、主轴和两个主轴承,主轴承安装在主轴中部凸台的两侧,主轴的两端安装在定轴承座中,动轴承座与主轴通过主轴承连接,两个主轴承之间注入润滑油；旋转筒和单向传动装置安装于两个主轴承之间,单向传动装置安装在主轴的中部凸台外部,旋转筒固定在单向传动装置的两侧,动轴承座的内腔装有磁铁。旋转筒可绕主轴间断转动并完成完整的圆周运动,运动过程中可将位于主轴承下部的润滑油带动到主轴承的上部,对主轴承进行充分的润滑,避免转动部件磨损。(The invention discloses a beam-pumping unit support shaft assembly which can improve the lubricating effect of the beam-pumping unit support shaft assembly in the petroleum industry. The supporting shaft assembly comprises a movable bearing seat, a fixed bearing seat, a main shaft and two main bearings, wherein the main bearings are arranged on two sides of a boss in the middle of the main shaft; the rotating cylinder and the one-way transmission device are arranged between the two main bearings, the one-way transmission device is arranged outside a middle boss of the main shaft, the rotating cylinder is fixed on two sides of the one-way transmission device, and the inner cavity of the movable bearing seat is provided with a magnet. The rotary cylinder can rotate discontinuously around the main shaft and complete circular motion, lubricating oil positioned at the lower part of the main bearing can be driven to the upper part of the main bearing in the motion process, the main bearing is sufficiently lubricated, and abrasion of rotating parts is avoided.)

1. The utility model provides a beam-pumping unit back shaft assembly, including movable bearing seat, dead axle bearing seat, main shaft and two base bearings, the both sides at main shaft middle part boss are installed to the base bearing, install in dead axle bearing seat at the both ends of main shaft, movable bearing seat passes through the base bearing with the main shaft and is connected, pour into lubricating oil between two base bearings, a rotating cylinder and one-way transmission device install between two base bearings, one-way transmission device installs in the middle part boss outside of main shaft, the both sides at one-way transmission device are fixed to the rotating cylinder, magnet is equipped with to the inner chamber of movable bearing seat.

2. The beam-pumping unit support shaft assembly as claimed in claim 1, wherein the one-way transmission device is a one-way bearing or a ratchet wheel, and the lower part of the rotary cylinder is placed in lubricating oil and can rotate in one direction under the braking of the one-way transmission device and the driving of the magnet.

3. The beam-pumping unit support shaft assembly according to claim 1 or 2, wherein the rotary cylinder is installed corresponding to the magnet, and a gap is left between the movable bearing seat and the rotary cylinder.

4. The beam-pumping unit support shaft assembly according to claim 3, wherein the rotating cylinder and the non-fixed side of the one-way transmission device are provided with oil guiding edges, and the oil guiding edges can extend into a space between the inner shell and the outer shell of the main bearing.

5. The beam-pumping unit support shaft assembly of claim 1, wherein a windage tray is disposed outside the main bearing, and the maximum diameter of the windage tray body is greater than the inner diameter of the main bearing outer housing.

6. The beam-pumping unit support shaft assembly of claim 5, wherein the windage tray is mounted on the outside of the main shaft between the main bearing and the bearing cap, and the inner circle of the windage tray is provided with a sealing ring.

7. The beam-pumping unit support shaft assembly according to claim 6, wherein the oil baffle disc is provided with an oil return groove on the outer circle of the small diameter, the oil return groove is an annular groove, and a gap is reserved between the groove opening of the oil return groove and the bearing cover.

8. The beam-pumping unit support shaft assembly as defined in claim 3, wherein the outer surface of the rotary barrel is a toothed structure.

9. The beam-pumping unit support shaft assembly as claimed in claim 1, wherein the fixed bearing seat is connected with a pumping unit bracket and serves as a lower bearing seat of the support shaft assembly, and the movable bearing seat is connected with a pumping unit beam and serves as an upper bearing seat of the support shaft assembly.

10. The beam-pumping unit support shaft assembly as claimed in claim 1, wherein the movable bearing seat is connected with a pumping unit bracket and serves as a lower bearing seat of the support shaft assembly, and the fixed bearing seat is connected with a pumping unit beam and serves as an upper bearing seat of the support shaft assembly.

Technical Field

The invention relates to a bearing part between a walking beam and a bracket of a walking beam type oil pumping machine in the petroleum industry, in particular to a supporting shaft assembly of the walking beam type oil pumping machine.

Background

The supporting shaft assembly of the beam-pumping unit is positioned at the top end of the bracket and has two motion modes of axial-moving type and seat-moving type, the middle lower plane of the beam is connected with the supporting shaft assembly through a fixing bolt, the axial-moving type supporting shaft assembly is installed at the top end of the bracket, and the seat-moving type intermediate shaft is installed on the lower plane of the beam and has the function of enabling the beam of the pumping unit to realize up-and-down reciprocating motion so as to drive the pumping rod and the oil well pump to do up-and-down. The front end of the support shaft assembly bears suspension point load through the horse head, the rear end bears balance weight generated by the crank and the balance block through the tail bearing assembly and the transverse ship, and the support shaft assembly is an important part of the beam pumping unit. The walking beam swings around the support shaft assembly in a small-range reciprocating mode in the working process, and the support shaft assembly is a transmission bearing part between the walking beam of the walking beam type oil pumping unit and the support. The revolutionary pair in the existing supporting shaft assembly can not realize circular motion, and lubricating oil can not realize the functions of circulation and cleaning. Because the alternating load born by the support shaft assembly is large, in order to improve the lubricating effect and prolong the service life, a worker only needs to be filled with lubricating grease to keep the lubricating grease.

The structure of the existing support shaft assembly comprises a bearing seat, a main shaft, a bearing gland and a bolt, and the support shaft assembly has the following defects:

1. because the main shaft and the parts on the shaft in the beam pumping unit support shaft assembly are fixed, the bearing seat swings along with the beam, circular rotation motion cannot be completed, lubricating oil cannot reach the upper part of the bearing, the upper part of the bearing cannot be circulated and replaced by the lubricating oil, the hidden danger of oil shortage lubrication and lubrication failure exists, and dry grinding faults and bearing damage often occur.

2. In order to ensure the lubricating effect, the installation method that after grease is squeezed into the bearing, the inner cavity is filled with the grease and then the grease is pressed into the bearing is adopted in field maintenance until oil is discharged from two sides of the outer surface of the bearing. However, in the rotating process of the bearing seat, the lubricating grease in the lubricating cavity changes along with the volume of the lubricating grease, and redundant parts leak out of the bearing seat to pollute the oil pumping equipment and the land around an oil well.

Because the working environment of the supporting shaft assembly is severe and is a key part of maintenance, the supporting shaft assembly is required to be maintained once every half year, new lubricating grease is required to replace old lubricating grease during each maintenance, workers wear safety belts during field operation and carry ropes to ascend for 5-7 meters, then tools such as a monkey wrench, a grease gun and the like are lifted by the ropes, about 15-20 guns of grease are used for each supporting shaft assembly, the empty grease gun is put on the ground by the ropes after each gun is hit, the ground workers fill the grease, the workers on the oil pumping unit drive the lubricating grease into the grease from the grease nozzle through the grease gun, take down the opposite emptying screw, the old lubricating grease is replaced by the new lubricating grease, the lubricating grease is qualified after the new lubricating grease is seen in the emptying position, particularly, the circular operation cannot be realized when the bearing of the supporting shaft assembly is subjected to the up-and-down reciprocating motion of a walking beam, and the upper half part of the bearing cannot be effectively, the bearing is abnormally abraded, the cost is increased, the oil well time rate is reduced, the workload of workers is increased, and the enterprise benefit is reduced.

The traditional maintenance mode has the problems of high cost, long working time and high labor intensity, particularly, new lubricating grease is required to be replaced by old lubricating grease during maintenance at each time and the pumping unit is operated, the lubricating grease is heated and overflows, the lubricating grease drips on the pumping unit to cause unnecessary workload, and the improper treatment of the lubricating grease can cause environmental pollution. When the back shaft assembly beaten butter, the operator stands on the support top, belongs to the high altitude construction, though the safety belt operation is being fastened, still takes place to skid easily and falls into the accident of tumble injury, has great risk, and the factor of safety of operation is low, and especially there is only a protective shroud in most beam-pumping unit back shaft assembly positions, and operating personnel stands on the iron rod of a diameter 16 millimeters, very easily tired, has great safe risk, and the factor of safety of operation is low.

The maintenance operation time can reach 2 to 3 hours on average, the operation time is long, the workload is large, the operation rate and the crude oil yield of an oil well are seriously influenced, and meanwhile, the safety risk of operators is increased.

At present, the production field also has the following beam-pumping unit support shaft assemblies:

application No.: 201820255689.6 application date: 2018-02-12 the invention discloses a conveniently-adjusted beam assembly of a pumping unit, which comprises a supporting seat, wherein circular through holes are formed in two sides of the outer wall of one side of the supporting seat, pin shafts are sleeved on the inner walls of the circular through holes, a connecting block is fixed to the central axis of the outer wall of the top end of the supporting seat through bolts, a beam body is fixed to the outer wall of the top end of the connecting block through bolts, lug seats are fixed to the outer wall of the bottom end of the beam body through bolts, a level meter is fixed to the outer wall of one side of the beam body through screws, and a first servo motor is fixed to the outer wall of one side of the beam body through. According to the invention, the balancing weights are added on the two sides of the top end of the cross beam, so that the cross beam can be balanced by adjusting the balancing weights, the servo motor and the two screws can adjust the balancing weights through the servo motor, and the level can directly observe whether the cross beam is balanced. The invention only solves the problem of direction adjustment of the beam assembly of the pumping unit, and can not effectively solve the problem of lubrication of the assembly.

Mechanical framework assembly of beam-pumping unit assembly direct drive motor, application number: 201020286914.6 application date: 2010-08-10. The invention relates to a mechanical framework assembly for assembling a direct drive motor of a beam-pumping unit, which comprises the direct drive motor, a reducer base fixed with the base of the pumping unit, rocker arms respectively connected with two crank connecting rods of the pumping unit, and a framework assembly consisting of cross beams, longitudinal beams, supporting frames, bearing seats provided with bearings and motor fasteners, wherein the two cross beams and the two longitudinal beams are fixed to form a cross-shaped chassis, the two longitudinal beams are respectively fixed with a trapezoidal supporting frame welded by a steel material, the two supporting frames are respectively fixed with one bearing seat, the chassis is fixed on the reducer base, the direct drive motor is fixed on the two cross beams or directly fixed on the two cross beams through four motor fasteners, and shaft heads at two ends of the direct drive motor are respectively connected with the rocker arms through the bearing seats. Its advantages are simple structure, easy manufacture, low cost and interchangeable or universal use. Due to flexible remanufacturing configuration, the direct drive motor can meet the installation technical requirements of various beam pumping units. This mechanical frame assembly cannot be used on the walking beam of a pumping unit.

The above-mentioned current situation of beam-pumping unit support shaft assemblies needs to be changed.

Disclosure of Invention

In order to solve the problems, the invention provides a support shaft assembly of a beam-pumping unit, which can fully lubricate the support shaft assembly of the beam-pumping unit and prevent rotating parts in the support shaft assembly from being abraded.

In order to achieve the above purpose, the invention provides the following technical scheme:

the utility model provides a beam-pumping unit back shaft assembly includes movable bearing seat, dead axle bearing, main shaft and two base bearings, the both sides at main shaft middle part boss are installed to the base bearing, install in dead axle bearing at the both ends of main shaft, movable bearing seat passes through the base bearing with the main shaft and is connected, pour into lubricating oil between two base bearings, rotatory section of thick bamboo and one-way transmission device install between two base bearings, one-way transmission device installs in the middle part boss outside of main shaft, rotatory section of thick bamboo is fixed at one-way transmission device's both sides, magnet is equipped with to movable bearing seat.

The one-way transmission device is a one-way bearing or a ratchet wheel, and the lower part of the rotating cylinder is arranged in lubricating oil and can rotate in a one-way mode under the braking of the one-way transmission device and the driving of the magnet.

The rotating cylinder is correspondingly installed with the magnet, and a gap is reserved between the movable bearing seat and the rotating cylinder.

The rotating cylinder and the non-fixed side of the one-way transmission device are provided with oil guiding edges, and the oil guiding edges can extend into a space between the inner shell and the outer shell of the main bearing.

An oil baffle disc is arranged on the outer side of the main bearing, and the maximum diameter of a disc body of the oil baffle disc is larger than the inner diameter of an outer shell of the main bearing.

The oil baffle disc is arranged outside the main shaft and between the main bearing and the bearing cover, and the inner circle of the oil baffle disc is provided with the sealing ring.

An oil return groove is formed in the small-diameter outer circle of the oil baffle disc, and the oil return groove is an annular groove, and a gap is reserved between the notch of the oil return groove and the bearing cover.

The outer surface of the rotary cylinder is in a tooth-shaped structure.

The fixed bearing seat is connected with a pumping unit bracket and serves as a lower bearing seat of the support shaft assembly, and the movable bearing seat is connected with a pumping unit walking beam and serves as an upper bearing seat of the support shaft assembly.

The movable bearing seat is connected with a pumping unit bracket and serves as a lower bearing seat of the support shaft assembly, and the fixed bearing seat is connected with a pumping unit walking beam and serves as an upper bearing seat of the support shaft assembly.

The invention has the following beneficial effects: the walking beam of the oil pumping unit swings in a reciprocating way, and the movable bearing seat or the fixed bearing seat can reciprocate along with the walking beam. When the rotating directions of the movable bearing seat or the fixed bearing seat and the one-way transmission device are the same, the magnet can drive the rotary cylinder to rotate; when the rotating directions of the movable bearing seat or the fixed bearing seat and the one-way transmission device are opposite, the rotating cylinder cannot move reversely due to the existence of the one-way transmission device, does not move along with the movable bearing seat or the fixed bearing seat, and stays at the current position until the movable bearing seat or the fixed bearing seat moves in the same direction as the one-way transmission device again, so that the rotating cylinder can intermittently rotate in one direction. In the rotating process of the rotating cylinder, the lubricating oil adhered to the lower part of the rotating cylinder is brought to the upper part of the main bearing to lubricate the upper part of the main bearing. The oil baffle disc can prevent excessive lubricating oil from leaking, when the lubricating oil overflows, the lubricating oil flows into the oil return grooves and flows downwards along the oil return grooves, and finally the lubricating oil is guided into the main bearing, so that waste and pollution are prevented. The main effects are as follows:

1. the rotary cylinder can rotate discontinuously around the main shaft and complete circular motion, and lubricating oil positioned at the lower part of the main bearing can be driven to the upper part of the main bearing in the motion process to fully lubricate the main bearing so as to avoid abrasion of a rotating part;

2. the structure of the invention does not need to be filled with excessive lubricating oil, and is matched with the oil baffle disc for use, thereby effectively reducing the leakage of the lubricating oil, saving the lubricating oil and reducing the pollution to the environment;

3. the invention has flexible installation mode, is suitable for beam-pumping units with different structures, and is convenient to transform.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a front view of a schematic structural diagram of the present invention;

FIG. 2 is a left side view of FIG. 1;

fig. 3 is an enlarged view of a point a in fig. 1.

Detailed Description

The present invention is described in detail below with reference to the accompanying drawings, and the detailed description and technical contents of the present invention are described below with reference to the accompanying drawings, however, the drawings are only for reference and illustration, and are not used to limit the protection scope of the present invention. The following description is only a preferred embodiment of the present invention, and other equivalent variations applying the present invention should fall within the protection scope of the present invention.

Referring to fig. 1 to 3, a beam-pumping unit back shaft assembly includes a movable bearing seat 1, a fixed bearing seat 2, a main shaft 3 and two main bearings 4, the main bearings 4 are installed at both sides of a boss at the middle part of the main shaft 3, both ends of the main shaft 3 are installed in the fixed bearing seat 2, the movable bearing seat 1 is connected with the main shaft 3 through the main bearings 4, and lubricating oil is injected between the two main bearings 4. The rotary cylinder 5 and the one-way transmission device 6 are arranged between the two main bearings 4, the one-way transmission device 6 is arranged outside a boss in the middle of the main shaft 3, the rotary cylinder 5 is fixed on two sides of the one-way transmission device 6, and the magnet 11 is arranged in the inner cavity of the movable bearing seat 1.

On the basis of the first embodiment, the invention also has the following embodiments:

example two

The unidirectional transmission device 6 is a unidirectional bearing or a ratchet wheel, and the lower part of the rotary cylinder 5 is arranged in lubricating oil and can rotate in a unidirectional way under the braking of the unidirectional transmission device 6 and the driving of the magnet 11.

EXAMPLE III

The rotating cylinder 5 is correspondingly installed with the magnet 11, and a gap is reserved between the movable bearing seat 1 and the rotating cylinder 5. The outside of the rotary cylinder 5 is made of a material which can be absorbed by the magnet 11, a gap is reserved between the movable bearing seat 1 and the rotary cylinder 5, sufficient space can be reserved between the rotary cylinder 5 and the movable bearing seat 1 to contain lubricating oil, and friction is not generated between the rotary cylinder 5 and the movable bearing seat 1.

Example four

The unfixed side of rotary drum 5 and one-way transmission 6 is equipped with leads oily limit 51, lead oily limit 51 and can stretch into between the interior casing of main bearing 4 and the shell body, in lubricating oil accessible led into main bearing 4 on leading oily limit 51, can be better with the leading-in main bearing 4 of the lubricating oil of adhesion, optimize lubricated effect.

EXAMPLE five

An oil baffle disc 9 is arranged on the outer side of the main bearing 4, and the maximum diameter of a disc body of the oil baffle disc 9 is larger than the inner diameter of an outer shell of the main bearing 4.

EXAMPLE six

The oil baffle disc 9 is arranged outside the main shaft 3 and between the main bearing 4 and the bearing cover 12, the sealing ring 91 is arranged in the inner circle of the oil baffle disc 9 to realize sealing with the main shaft 3, and the oil baffle disc 9 can prevent lubricating oil from leaking from the main shaft 3 to cause waste and pollution.

EXAMPLE seven

An oil return groove 92 is formed in the small-diameter outer circle of the oil baffle disc 9, the oil return groove 92 is an annular groove, a gap is reserved between the notch of the oil return groove 92 and the bearing cover 12, and lubricating oil overflowing outwards can flow back to the main bearing 4 along the outer side of the oil baffle disc 9 and the gap.

Example eight

The outer surface of the rotary cylinder 5 is in a tooth structure. The tooth-shaped structure can increase the contact area between the outer side of the rotary cylinder 5 and lubricating oil and increase the amount of lubricating oil adhered.

The movable bearing seat 1 and the fixed bearing seat 2 are also mounted in the following two embodiments:

example one

The fixed bearing seat 2 is connected with a pumping unit bracket 7 and serves as a lower bearing seat of the support shaft assembly, and the movable bearing seat 1 is connected with a pumping unit walking beam 8 and serves as an upper bearing seat of the support shaft assembly.

When the movable bearing seat 1 in the embodiment is connected with the walking beam 8 and rotates along with the swinging of the walking beam 8, the magnet 11 can drive the rotary cylinder 5 to rotate when the movable bearing seat 1 and the one-way transmission device 6 rotate in the same direction; when the rotating directions of the movable bearing seat 1 and the one-way transmission device 6 are opposite, the rotating cylinder 5 can only rotate in one direction relative to the main shaft 3 due to the existence of the one-way transmission device 6, and the reciprocating motion of the movable bearing seat 1 can enable the rotating cylinder 5 to intermittently complete circular motion around the main shaft 3. The rotating cylinder 5 is arranged outside the main shaft 3, and can drive lubricating oil positioned at the lower part of the main bearing 4 to the upper part of the main bearing 4, and the lubrication of the main bearing is optimized through complete circular motion.

Example two

The movable bearing seat 1 is connected with a pumping unit bracket 7 and serves as a lower bearing seat of the support shaft assembly, and the fixed bearing seat 2 is connected with a pumping unit walking beam 8 and serves as an upper bearing seat of the support shaft assembly.

When the fixed bearing seat 2 in the embodiment is connected with the beam 8 of the pumping unit and drives the main shaft 3 to rotate along with the swinging of the beam 8, the magnet 11 can drive the rotary cylinder 5 to rotate when the main shaft 3 and the one-way transmission device 6 rotate in the same direction; when the rotation direction of the main shaft 3 is opposite to that of the one-way transmission device 6, the rotary cylinder 5 and the main shaft 3 can only rotate in one direction due to the existence of the one-way transmission device 6, and the reciprocating motion of the fixed bearing seat 2 can enable the rotary cylinder 5 and the main shaft 3 to discontinuously complete the complete circular motion. The rotating cylinder 5 is arranged outside the main shaft 3, and can drive lubricating oil positioned at the lower part of the main bearing 4 to the upper part of the main bearing 4, and the lubrication of the main bearing is optimized through complete circular motion.

While only certain exemplary embodiments of this invention have been described above, it will be understood by those skilled in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.