阅读说明：本技术 抽油机的游梁维修组合工装及维修方法 (Beam maintenance combined tool and maintenance method of pumping unit ) 是由 赵邦 张青 周巨标 朱国建 韩刚 周洪亮 徐刚 于 2021-09-10 设计创作，主要内容包括：本发明涉及一种抽油机的游梁维修组合工装及维修方法,工装包括游梁支撑平台、中轴维修平台及尾轴维修平台,游梁支撑平台包括游梁平台底座,游梁平台底座左右两端的中部分别焊接有方管承插座,两方管承插座中分别插接有游梁支撑立柱,两游梁支撑立柱上分别套装有方管套,两方管套的相向端面之间通过几字形支架固定连接,几字形支架的底部横杆上铰接有游梁支撑机构；两游梁支撑立柱的顶部分别固定有定滑轮,两方管承插座相背的外壁分别固定有钢丝绳绞盘,从钢丝绳绞盘中引出的钢丝绳分别向上绕过定滑轮,再向下连接在几字形支架的上部横杆顶部。本发明可以在不用吊车的情况下,很方便地维修游梁上连接的各部件,杜绝在吊臂下危险作业,安全性高。(The invention relates to a walking beam maintenance combination tool and a maintenance method of a pumping unit, wherein the tool comprises a walking beam supporting platform, a middle shaft maintenance platform and a tail shaft maintenance platform, the walking beam supporting platform comprises a walking beam platform base, the middle parts of the left end and the right end of the walking beam platform base are respectively welded with a square pipe socket, walking beam supporting upright posts are respectively inserted into the two square pipe socket sockets, square pipe sleeves are respectively sleeved on the two walking beam supporting upright posts, the opposite end surfaces of the two square pipe sleeves are fixedly connected through a reversed V-shaped bracket, and a walking beam supporting mechanism is hinged on a bottom cross bar of the reversed V-shaped bracket; fixed pulleys are respectively fixed on the tops of the two beam supporting columns, steel wire rope winches are respectively fixed on the outer walls of the two square pipe socket seats opposite to each other, and steel wire ropes led out from the steel wire rope winches respectively go upwards around the fixed pulleys and are downwards connected to the tops of the cross rods on the upper portions of the support shaped like a Chinese character ji. The invention can conveniently maintain all parts connected on the walking beam without a crane, thereby avoiding dangerous operation under the suspension arm and having high safety.)

1. The utility model provides a walking beam maintenance combination frock of beam-pumping unit, includes walking beam supporting platform, axis maintenance platform and tail-shaft maintenance platform, its characterized in that: the walking beam supporting platform comprises a walking beam platform base, square pipe socket seats extending upwards are welded at the middle parts of the left end and the right end of the walking beam platform base respectively, walking beam supporting upright posts are inserted into the square pipe socket seats respectively, square pipe sleeves are sleeved on the two walking beam supporting upright posts respectively, opposite end faces of the two square pipe sleeves are fixedly connected through inverted V-shaped supports with upward openings, and a walking beam supporting mechanism is hinged to a cross rod at the bottoms of the inverted V-shaped supports; fixed pulleys are respectively fixed on the tops of the two beam supporting columns, steel wire rope winches are respectively fixed on the outer walls of the two square pipe socket seats opposite to each other, and steel wire ropes led out from the steel wire rope winches respectively go upwards around the fixed pulleys and are downwards connected to the tops of the cross rods on the upper portions of the support shaped like a Chinese character ji.

2. The walking beam maintenance combination tool of the pumping unit according to claim 1, characterized in that: a plurality of upright post positioning holes are respectively distributed on the two beam supporting upright posts, the bottoms of the two square pipe sleeves are respectively supported on height limiting bolts, and the height limiting bolts are respectively inserted into one pair of upright post positioning holes; socket locking screws are respectively screwed on at least two outer walls of the square pipe socket, and the inner ends of the socket locking screws are respectively tightly propped against the outer walls of the beam supporting columns.

3. The walking beam maintenance combination tool of the pumping unit according to claim 1, characterized in that: the fixed pulleys are provided with two parallel fixed pulley shafts, the front ends and the rear ends of the two fixed pulley shafts are respectively welded on the tops of the pulley square seats, and the bottom sockets of the two pulley square seats are respectively sleeved on the top square tenons of the corresponding walking beam supporting stand columns.

4. The walking beam maintenance combination tool of the pumping unit according to claim 1, characterized in that: two long edges of the walking beam platform base are formed by welding two square pipes respectively, telescopic arms extending in opposite directions are inserted into the two square pipes respectively, the outer end of each telescopic arm is connected with a screw rod supporting leg in a screwed mode respectively, a hand wheel is fixed to the upper end of each screw rod supporting leg respectively, and a supporting plate is arranged at the lower end of each screw rod supporting leg respectively.

5. The walking beam maintenance combination tool of the pumping unit according to claim 1, characterized in that: the two n-shaped brackets are respectively supported at the head end and the tail end of the walking beam, the walking beam supporting mechanism close to the head end of the walking beam is a steerable supporting plate, and the walking beam supporting mechanism close to the tail end of the walking beam is a rotatable carrier roller; two beam supporting columns positioned on the same side of the beam are connected with each other through a connecting cross rod respectively, two ends of the connecting cross rod are fixed in transverse sockets of the two-dimensional connecting seat respectively, and cross rod locking screws are screwed on the side walls of the transverse sockets respectively; vertical sockets of the two-dimensional connecting seat are respectively sleeved on corresponding beam supporting stand columns, and side walls of the vertical sockets are respectively screwed with connecting seat locking screws.

6. The walking beam maintenance combination tool of the pumping unit according to claim 1, characterized in that: the middle shaft maintenance platform comprises middle shaft platform cross beams which are parallel to each other, two ends of each middle shaft platform cross beam are connected with each other through a longitudinal connecting rod to form a middle shaft platform base, two middle shaft steering shafts which are parallel to each other are connected between the middle parts of the two middle shaft platform cross beams, and two ends of each middle shaft steering shaft are supported on the corresponding middle shaft platform cross beam through a middle shaft steering shaft bearing seat; the outer sides of the bearing seats of the two middle axle steering shafts at the same side are respectively fixed with a middle axle platform stand column, the top of each middle axle platform stand column is respectively provided with a bearing seat guide roller, two ends of a cross beam of the two middle axle platforms are respectively provided with a hanging ring, the hanging rings are respectively connected with springs, the springs at the same side are connected through hanging belts, and the middle sections of the hanging belts are respectively wrapped on the two bearing seat guide rollers at the same side.

7. The walking beam maintenance combination tool of the pumping unit according to claim 6, characterized in that: the two ends of each middle shaft steering shaft are respectively provided with a square tenon, the two middle shaft steering shafts are respectively sleeved with a pair of rubber conical sleeves, and the small ends of each pair of rubber conical sleeves are opposite.

8. The walking beam maintenance combination tool of the pumping unit according to claim 6, characterized in that: the middle shaft platform base is positioned on a top platform of the hydraulic lifting trolley; and two ends of the longitudinal connecting rod are respectively provided with a threaded section, each threaded section is respectively screwed with a pair of adjusting nuts, and each pair of adjusting nuts are respectively pressed on two side walls of the corresponding middle shaft platform beam.

9. The walking beam maintenance combination tool of the pumping unit according to claim 1, characterized in that: the tail shaft maintenance platform comprises a tail shaft platform base, tail shaft platform upright columns which are erected upwards are symmetrically welded on two long edges of the tail shaft platform base, the tops of the tail shaft platform upright columns at two ends are connected with each other through tail shaft platform beam seats respectively, the tail shaft platform beam seats are parallel to the short edges of the tail shaft platform base, each tail shaft platform beam seat comprises a pair of tail shaft platform beams which are parallel to each other and spaced from each other, two ends of each tail shaft platform beam are connected with each other through tail shaft platform beam connecting seats respectively, adjusting screws are arranged in seams between the two tail shaft platform beams respectively, positive and negative threads are symmetrically arranged on the two adjusting screws, positive and negative nuts are screwed on the positive and negative threads respectively, adjusting rib plates which extend out of the seams upwards are connected on the positive and negative nuts respectively, tail beam limiting plates are welded at the upper ends of the two adjusting rib plates respectively, the limiting planes of the two tail beam limiting plates are opposite and perpendicular to the axis of the tail shaft platform crossbeam seat.

10. The walking beam maintenance combination tool of the pumping unit according to claim 9, characterized in that: the tail shaft platform beam connecting seat comprises a connecting base and a connecting gland, the bottom of the connecting base is located at the top of a tail shaft platform stand column, two ends of an adjusting screw rod are embedded in a semicircular hole of the connecting base, the connecting gland is pressed above the connecting base and the end of the adjusting screw rod, and a screw penetrates through the connecting gland from top to bottom and is screwed at the top of the tail shaft platform stand column through a screw hole of the connecting gland and the connecting base.

11. The beam-pumping unit of claim 10, wherein: adjusting screw bosses are respectively arranged at two ends of each adjusting screw and abut against the outer walls of the corresponding tail shaft platform beam connecting seats respectively, and a Z-shaped crank is connected to the center of the outer end face of one adjusting screw boss.

12. The walking beam maintenance combination tool of the pumping unit according to claim 9, characterized in that: four groups of tail shaft platform wheels are arranged below the tail shaft platform base, and each tail shaft platform wheel is respectively positioned below the corresponding tail shaft platform upright post; the connecting rod trolley is characterized by further comprising a connecting rod trolley for respectively bearing the connecting rod flange, wherein two arc-shaped plates are welded on a bottom plate of the connecting rod trolley and are respectively clamped in the outer circle and the inner hole of the connecting rod flange.

13. A beam maintenance method of an oil pumping unit is characterized by sequentially comprising the following steps: s1, respectively placing walking beam supporting platforms at positions, close to a horse head and a tail shaft, below a walking beam;

s2, lifting the walking beam to a horizontal state through the two walking beam supporting platforms, and enabling the bottom of the horse head to be separated from the ground;

s3, disassembling the horse head pin to finish maintenance of the horse head;

s4, placing the middle shaft maintenance platform on a top platform of the hydraulic lifting trolley, moving the middle shaft maintenance platform to the position below the middle shaft, and withdrawing the middle shaft after the middle shaft is disassembled and replaced;

s5, moving the tail shaft maintenance platform to the lower part of the tail beam;

s6, lowering the two beam supporting platforms to enable the horse heads to be supported on the ground, then continuously lowering the beam supporting platform close to the tail shaft to enable the tail beam to continuously descend and fall on the tail shaft maintenance platform, and completing separation of the tail shaft bearing seat and the tail of the walking beam;

s7, placing flanges of connecting rods at two ends of the tail beam on a connecting rod trolley respectively, and moving the tail beam out through a tail shaft maintenance platform and the connecting rod trolley to complete maintenance of the tail shaft;

s7, after the tail shaft and the tail beam are reset and assembled, the walking beam supporting platform close to the tail shaft ascends first, and the tail shaft maintenance platform is withdrawn first;

and S8, descending the walking beam supporting platform close to the tail shaft to enable the tail beam to fall on the ground, and then continuously descending and withdrawing the walking beam supporting platform close to the tail shaft.

Technical Field

The invention relates to a walking beam maintenance combined tool of an oil pumping unit, and also relates to a walking beam maintenance method of the oil pumping unit, belonging to the technical field of oil pumping unit maintenance.

Background

The walking beam type oil pumping machine is integrally like a balance, the middle part of the walking beam is hinged to the top end of the support through the middle bearing, and the walking beam operates in a reciprocating mode at a certain angle from front to back by taking the middle bearing as a fulcrum in the operation process. The head end of the walking beam is connected with a horse head which bears the oil pumping load; a tail shaft bearing seat is fixed below the tail end of the walking beam, a cross beam is fixed below the tail shaft bearing seat, the axis of the cross beam is perpendicular to the axis of the walking beam, connecting rods are hinged to the front end and the rear end of the cross beam respectively, connecting rod flanges are arranged at the lower ends of the two connecting rods respectively, and the two connecting rod flanges are connected with a crank mechanism through crank pins respectively and are provided with balance weight loads. When the pumping unit works, the crank mechanism drives the tail end of the walking beam to swing up and down through the two connecting rods and the cross beam, the horse head at the head end of the walking beam also moves up and down, and the horse head drives the plunger of the underground deep well pump to move up and down through the rope braid, the polished rod and the pumping rod, so that crude oil in a well is continuously pumped out of a shaft.

The beam of pumping unit is bulky, weight is heavy, and common trouble has in the daily production process that walking beam axis, tail-shaft damage, and connecting rod, horse head appear the crack, and horse head round pin wearing and tearing scheduling problem just needs in time to change. The walking beam of the oil pumping unit is generally processed by integrally returning to the field when the walking beam, the horse head, the cross beam and the connecting rod are in an assembled state.

Two ways of beam maintenance are provided, one is to return the pumping unit manufacturer for maintenance, so that the maintenance cost is high; second, the oil recovery factory or beam-pumping unit installation maintenance professional team maintain by oneself, generally adopt truck crane, go to hang and carry out the maintenance after the hoist and mount, maintain under this kind of state and usually not accord with the safety regulation, oil field maintenance safety operation regulation: people cannot stand under the lifting arm of the crane, the crane cannot operate in a suspension state, traditional illegal operation is carried out, and the risk is extremely high.

Disclosure of Invention

The invention aims to overcome the problems in the prior art, and provides a walking beam maintenance combined tool of an oil pumping unit, which can conveniently maintain all parts connected on a walking beam without a crane, avoids dangerous operation under a suspension arm and has high safety.

In order to solve the technical problems, the walking beam maintenance combination tool for the pumping unit comprises a walking beam supporting platform, a middle shaft maintenance platform and a tail shaft maintenance platform, wherein the walking beam supporting platform comprises a walking beam platform base, the middle parts of the left end and the right end of the walking beam platform base are respectively welded with an upward extending square pipe socket, walking beam supporting upright posts are respectively inserted into the two square pipe socket sockets, square pipe sleeves are respectively sleeved on the two walking beam supporting upright posts, the opposite end surfaces of the two square pipe sleeves are fixedly connected through a reversed V-shaped support with an upward opening, and a walking beam supporting mechanism is hinged to a bottom cross rod of the reversed V-shaped support; fixed pulleys are respectively fixed on the tops of the two beam supporting columns, steel wire rope winches are respectively fixed on the outer walls of the two square pipe socket seats opposite to each other, and steel wire ropes led out from the steel wire rope winches respectively go upwards around the fixed pulleys and are downwards connected to the tops of the cross rods on the upper portions of the support shaped like a Chinese character ji.

As an improvement of the invention, a plurality of upright post positioning holes are respectively distributed on the two beam supporting upright posts, the bottoms of the two square pipe sleeves are respectively supported on height limiting bolts, and the height limiting bolts are respectively inserted into one pair of upright post positioning holes; socket locking screws are respectively screwed on at least two outer walls of the square pipe socket, and the inner ends of the socket locking screws are respectively tightly propped against the outer walls of the beam supporting columns.

As a further improvement of the invention, the fixed pulleys are provided with two parallel fixed pulleys, the front ends and the rear ends of the axles of the two fixed pulleys are respectively welded on the top of the pulley square seat, and the bottom sockets of the two pulley square seats are respectively sleeved on the top square tenons of the corresponding walking beam supporting upright posts.

As a further improvement of the invention, two long sides of the walking beam platform base are respectively formed by welding two square pipes, telescopic arms extending in opposite directions are respectively inserted into the two square pipes, the outer end of each telescopic arm is respectively screwed with a screw rod supporting leg, the upper end of each screw rod supporting leg is respectively fixed with a hand wheel, and the lower end of each screw rod supporting leg is respectively provided with a supporting disc.

As a further improvement of the invention, the two n-shaped brackets are respectively supported at the head end and the tail end of the walking beam, the walking beam supporting mechanism close to the head end of the walking beam is a steerable supporting plate, and the walking beam supporting mechanism close to the tail end of the walking beam is a rotatable carrier roller; two beam supporting columns positioned on the same side of the beam are connected with each other through a connecting cross rod respectively, two ends of the connecting cross rod are fixed in transverse sockets of the two-dimensional connecting seat respectively, and cross rod locking screws are screwed on the side walls of the transverse sockets respectively; vertical sockets of the two-dimensional connecting seat are respectively sleeved on corresponding beam supporting stand columns, and side walls of the vertical sockets are respectively screwed with connecting seat locking screws.

As a further improvement of the invention, the middle shaft maintenance platform comprises middle shaft platform cross beams which are parallel to each other, two ends of the two middle shaft platform cross beams are connected with each other through longitudinal connecting rods to form a middle shaft platform base, two middle shaft steering shafts which are parallel to each other are connected between the middle parts of the two middle shaft platform cross beams, and two ends of each middle shaft steering shaft are supported on the corresponding middle shaft platform cross beam through a middle shaft steering shaft bearing seat; the outer sides of the bearing seats of the two middle axle steering shafts at the same side are respectively fixed with a middle axle platform stand column, the top of each middle axle platform stand column is respectively provided with a bearing seat guide roller, two ends of a cross beam of the two middle axle platforms are respectively provided with a hanging ring, the hanging rings are respectively connected with springs, the springs at the same side are connected through hanging belts, and the middle sections of the hanging belts are respectively wrapped on the two bearing seat guide rollers at the same side.

As a further improvement of the invention, two ends of each middle shaft steering shaft are respectively provided with a square tenon, a pair of rubber conical sleeves are respectively sleeved on the two middle shaft steering shafts, and the small ends of each pair of rubber conical sleeves are opposite.

As a further improvement of the invention, the middle shaft platform base is positioned on a top platform of the hydraulic lifting trolley; and two ends of the longitudinal connecting rod are respectively provided with a threaded section, each threaded section is respectively screwed with a pair of adjusting nuts, and each pair of adjusting nuts are respectively pressed on two side walls of the corresponding middle shaft platform beam.

As a further improvement of the invention, the tail shaft maintenance platform comprises a tail shaft platform base, tail shaft platform upright posts which are erected upwards are symmetrically welded on two long sides of the tail shaft platform base, the tops of the tail shaft platform upright posts at two ends are respectively connected with each other through tail shaft platform cross beam seats, the tail shaft platform cross beam seats are parallel to the short sides of the tail shaft platform base, each tail shaft platform cross beam seat comprises a pair of tail shaft platform cross beams which are parallel to each other and are spaced from each other, two ends of each tail shaft platform cross beam are respectively connected with each other through tail shaft platform cross beam connecting seats, adjusting screws are respectively arranged in seams between the two tail shaft platform cross beams, positive and negative threads are symmetrically arranged on the two adjusting screws, positive and negative nuts are respectively screwed on the positive and negative threads, adjusting rib plates which extend out of the seams upwards are respectively connected on the positive and negative nuts, tail beam limiting plates are respectively welded at the upper ends of the two adjusting rib plates, the limiting planes of the two tail beam limiting plates are opposite and perpendicular to the axis of the tail shaft platform crossbeam seat.

As a further improvement of the invention, the connecting seat of the tail shaft platform beam comprises a connecting base and a connecting gland, the bottom of the connecting base is positioned at the top of the tail shaft platform upright post, two ends of the adjusting screw rod are embedded in a semicircular hole of the connecting base, the connecting gland is pressed above the connecting base and the end of the adjusting screw rod, and a screw passes through the connecting gland and the screw hole of the connecting base from top to bottom and is screwed at the top of the tail shaft platform upright post.

As a further improvement of the invention, two ends of the adjusting screw are respectively provided with an adjusting screw boss, the adjusting screw bosses respectively abut against the outer walls of the corresponding tail shaft platform beam connecting seats, and the center of the outer end face of one adjusting screw boss is connected with a Z-shaped crank.

As a further improvement of the invention, four groups of tail shaft platform wheels are arranged below the tail shaft platform base, and each tail shaft platform wheel is respectively positioned below the corresponding tail shaft platform upright post; the connecting rod trolley is characterized by further comprising a connecting rod trolley for respectively bearing the connecting rod flange, wherein two arc-shaped plates are welded on a bottom plate of the connecting rod trolley and are respectively clamped in the outer circle and the inner hole of the connecting rod flange.

Another object of the present invention is to provide a beam maintenance method for an oil pumping unit, which can conveniently maintain components connected to a beam without using a crane, thereby preventing dangerous work under a boom and achieving high safety.

In order to solve the technical problems, the invention discloses a beam maintenance method of an oil pumping unit, which sequentially comprises the following steps: s1, respectively placing walking beam supporting platforms at positions, close to a horse head and a tail shaft, below a walking beam;

s2, lifting the walking beam to a horizontal state through the two walking beam supporting platforms, and enabling the bottom of the horse head to be separated from the ground;

s3, disassembling the horse head pin to finish maintenance of the horse head;

s4, placing the middle shaft maintenance platform on a top platform of the hydraulic lifting trolley, moving the middle shaft maintenance platform to the position below the middle shaft, and withdrawing the middle shaft after the middle shaft is disassembled and replaced;

s5, moving the tail shaft maintenance platform to the lower part of the tail beam;

s6, lowering the two beam supporting platforms to enable the horse heads to be supported on the ground, then continuously lowering the beam supporting platform close to the tail shaft to enable the tail beam to continuously descend and fall on the tail shaft maintenance platform, and completing separation of the tail shaft bearing seat and the tail of the walking beam;

s7, placing flanges of connecting rods at two ends of the tail beam on a connecting rod trolley respectively, and moving the tail beam out through a tail shaft maintenance platform and the connecting rod trolley to complete maintenance of the tail shaft;

s7, after the tail shaft and the tail beam are reset and assembled, the walking beam supporting platform close to the tail shaft ascends first, and the tail shaft maintenance platform is withdrawn first;

and S8, descending the walking beam supporting platform close to the tail shaft to enable the tail beam to fall on the ground, and then continuously descending and withdrawing the walking beam supporting platform close to the tail shaft.

Compared with the prior art, the invention has the following beneficial effects: 1. the two beam supporting platforms can lift the walking beam of the oil pumping unit, can adjust the height and are convenient to detach the horse head pin.

2. Each part frock easy dismounting, the transportation and the equipment of being convenient for are fit for beam-pumping unit installation maintenance professional team and carry out the maintenance work.

3. The ends of the two ends of the center shaft extending out of the bearing seats are respectively placed on the hanging strips, the hanging strips have an automatic centering function, can automatically adapt to center shafts with different diameters and specifications, and are high in adaptability. The width of the middle shaft platform base can be adjusted through the longitudinal connecting rod, and middle shafts with different lengths can also adapt to the width.

4. The tail beam can be stably lifted by the maintenance tool, the two sides of the tail beam are limited, the tail shaft and the tail beam can be conveniently transferred and replaced, and rollover in the transferring process is avoided.

5. The maintenance of each part all adopts the mode of lifting, avoids the maintenance process to use the crane, avoids the maintenance personal at the dangerous operation of davit below, also avoids the axis etc. to promote the in-process in the handling to drop, has improved the construction security.

Drawings

The invention will be described in further detail with reference to the following drawings and detailed description, which are provided for reference and illustration purposes only and are not intended to limit the invention.

Fig. 1 is a front view of a first embodiment of the walking beam support platform of the present invention.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a left side view of fig. 1.

Fig. 4 is a perspective view of fig. 1.

Fig. 5 is a perspective view of a second embodiment of the walking beam support platform of the present invention.

Fig. 6 is a working state diagram of the walking beam supporting platform of the invention.

FIG. 7 is a front view of the bottom bracket service platform of the present invention.

Fig. 8 is a top view of fig. 7.

Fig. 9 is a left side view of fig. 7.

Fig. 10 is a perspective view of the present invention.

FIG. 11 is a state diagram of the middle shaft maintenance platform arranged on the top of the hydraulic lifting trolley.

Fig. 12 is a use state diagram of the bottom bracket center maintenance platform in the invention.

FIG. 13 is a front view of a main body portion of the tail shaft service platform of the present invention.

Fig. 14 is a left side view of fig. 13.

Fig. 15 is a perspective view of fig. 13.

Fig. 16 is a perspective exploded view of the tail shaft service platform of the present invention.

FIG. 17 is a view showing the operation of the platform for repairing the tail shaft according to the present invention.

In the figure: 1. a walking beam platform base; 2. a telescopic arm; 3. a support disc; 3a, supporting legs of a screw rod; 3b, a hand wheel; 4. a square pipe socket; 4a, socket locking screws; 5. a walking beam support column; 5a, a height limiting bolt; 6. a square pipe sleeve; 7. a bracket shaped like a Chinese character 'ji'; 8. a steerable fascia; 9. the carrier roller can be rotated; 10. a fixed pulley; 10a, a pulley square seat; 11. a wire rope winch; 12. a wire rope; 13. a two-dimensional connecting seat; a connecting seat locking screw; a cross bar locking screw; 14. connecting the cross bars; 15. a walking beam; 16. a donkey head; 17. a middle shaft; 18. a tail shaft; 19. a tail boom; 20. a connecting rod; 20a, a connecting rod flange; 21. a middle shaft platform beam; 21a, hanging ring; 22. a longitudinal connecting rod; 22a, adjusting nut; 23. a middle shaft platform upright post; 24. a center shaft platform inclined frame; 25. a center shaft steering shaft; 25a, a square tenon; 26. a bearing block guide roller; 27. a sling; 28. a spring; 29. a rubber conical sleeve; 30. a hydraulic lifting trolley; 31. a tail shaft platform base; 32. a tail shaft platform upright post; 33. a tail shaft platform inclined frame; 34. a tail shaft platform beam; 35. connecting a base; 36. connecting a gland; 37. adjusting the screw rod; 37a, adjusting the screw boss; a 37b.Z shaped crank; 38a, an orthodontic nut; 38b, a counter-threaded nut; 38c, adjusting rib plates; 38d, a tail beam limiting plate; 39. a tail shaft platform wheel; 40. a connecting rod trolley; arc plate 40a.

Detailed Description

As shown in fig. 1 to 5, the walking beam supporting platform in the walking beam maintenance combined tool of the pumping unit comprises a walking beam platform base 1, two long sides of the walking beam platform base 1 are respectively formed by welding two square pipes, telescopic arms 2 extending in opposite directions are respectively inserted into the two square pipes, and during transportation, the telescopic arms 2 are inserted into the square pipes to reduce the size. The outer end of each telescopic arm 2 is respectively screwed with a screw support leg 3a, the upper end of each screw support leg 3a is respectively fixed with a hand wheel 3b, and the lower end of each screw support leg 3a is respectively provided with a support plate 3. When the walking beam platform arrives at a working position, the telescopic arms 2 are pulled out outwards, the length of each screw supporting leg 3a is adjusted by rotating the hand wheel 3b, so that the walking beam platform base 1 is in a horizontal state, the support area is increased by the telescopic arms 2 and the support disc 3, the stability of the tool is improved, and the danger of side turning after lifting the walking beam 15 is prevented.

The middle parts of the left end and the right end of the walking beam platform base 1 are respectively welded with square pipe socket sockets 4 extending upwards, the walking beam supporting upright posts 5 are respectively inserted into the square pipe socket sockets 4, at least two outer walls of the square pipe socket sockets 4 are respectively screwed with socket locking screws 4a, and the inner ends of the socket locking screws 4a are respectively tightly propped against the outer walls of the walking beam supporting upright posts 5. The walking beam support upright post 5 and the square pipe socket 4 are arranged in a split mode, transportation is facilitated, the walking beam platform base 1 is placed below the tail portion of the walking beam 15 conveniently, the walking beam support upright post 5 is inserted into the square pipe socket 4, and then socket locking screws 4a in at least two directions are screwed on the outer wall of the bottom of the walking beam support upright post 5 to lock the walking beam support upright post 5.

The two walking beam supporting columns 5 are respectively sleeved with square pipe sleeves 6, the opposite end faces of the two square pipe sleeves 6 are fixedly connected through inverted V-shaped supports 7 with upward openings, two upper cross rods of the inverted V-shaped supports 7 are respectively welded on the opposite end faces of the corresponding square pipe sleeves 6, and the bottom cross rod of the inverted V-shaped supports 7 is hinged with a walking beam supporting mechanism.

Fixed pulleys 10 are respectively fixed on the tops of the two beam supporting columns 5, steel wire rope winches 11 are respectively fixed on the outer walls of the two square pipe socket seats 4, which are opposite to each other, steel wire ropes 12 led out of the steel wire rope winches 11 are respectively wound around the fixed pulleys 10 upwards and then are downwards connected to the tops of the cross bars on the upper portions of the n-shaped supports 7.

The fixed pulleys 10 are arranged in parallel, the front ends and the rear ends of wheel shafts of the two fixed pulleys are respectively welded to the tops of the pulley square seats 10a, and the bottom sockets of the two pulley square seats 10a are respectively sleeved on the top square tenons of the corresponding walking beam supporting columns 5, so that the assembly and the separation are facilitated.

A plurality of upright post positioning holes are respectively distributed on the two beam supporting upright posts 5, the bottoms of the two square pipe sleeves 6 are respectively supported on height limiting bolts 5a, and the height limiting bolts 5a are respectively inserted into one pair of upright post positioning holes.

As shown in fig. 6, two walking beam support columns 5 located on the same side of the walking beam 15 are connected with each other through a connecting cross rod 14, two ends of the connecting cross rod 14 are fixed in the transverse sockets of the two-dimensional connecting base 13, and cross rod locking screws 13b are screwed on the side walls of the transverse sockets; vertical sockets of the two-dimensional connecting seat 13 are respectively sleeved on the corresponding beam supporting upright posts 5, and side walls of the vertical sockets are respectively screwed with connecting seat locking screws 13a.

A walking beam platform base 1 is arranged between a horse head 16 and a middle shaft 17 of a walking beam 15, another walking beam platform base is arranged between the middle shaft 17 and a tail shaft 18 and a tail beam 19 of the walking beam 15, a telescopic arm 2 extends out in the direction perpendicular to the axis of the walking beam, when walking beam support columns 5 on the two walking beam platform bases 1 are respectively inserted into corresponding square pipe socket seats 4, two-dimensional connecting seats 13 are sleeved on the walking beam support columns 5, after the walking beam support columns 5 are locked, the two-dimensional connecting seats 13 are adjusted to proper heights, connecting seat locking screws 13a are screwed to lock the two-dimensional connecting seats 13 on the walking beam support columns 5, cross rods 14 are inserted into transverse sockets of the two-dimensional connecting seats 13 on the same side of the walking beam 15, and cross rod locking screws 13b are screwed to fixedly connect two ends of the connecting cross rods 14 with the two-dimensional connecting seats 13. Therefore, a stable and wide supporting structure is formed below the walking beam, the walking beam and the supporting platform cannot overturn in the maintenance process, and the shaking ratio is small.

The steel wire rope 12 is contracted by rotating the steel wire rope winch 11, the steel wire rope 12 is turned by the fixed pulley 10, and then the n-shaped supports 7 are lifted upwards until the two n-shaped supports 7 are respectively supported at the head end and the tail end of the walking beam 15, the walking beam supporting mechanism close to the head end of the walking beam 15 is a steerable supporting plate 8, and the walking beam supporting mechanism close to the tail end of the walking beam is a rotatable carrier roller 9. The steel wire rope 12 on the tool between the middle shaft 17 and the tail shaft 18 is firstly contracted, so that the rotatable carrier roller 9 gradually supports the tail of the walking beam 15, and in the lifting process of the tail of the walking beam, the rotatable carrier roller 9 rolls to compensate the distance change between the rotatable carrier roller and the head end.

When the walking beam 15 reaches the horizontal state, the wire rope winches 11 at the head end and the tail end are synchronously rotated, so that the steerable supporting plate 8 and the rotatable carrier roller 9 lift the walking beam 15 to be horizontally lifted, and the horse head 16 at the head end leaves the ground. After the lifting is finished, the height limiting bolt 5a is inserted into the upright post positioning hole below the square pipe sleeve 6, and the steel wire rope 12 can be unloaded. Therefore, the walking beam 15 can be lifted to a horizontal state without a crane, the horse head 16 is separated from the ground, the horse head pin is convenient to detach, and the horse head 16 is maintained or replaced, or the middle shaft 17 is replaced.

As shown in fig. 7 to 12, the middle axle maintenance platform of the present invention includes middle axle platform beams 21 parallel to each other, two ends of the two middle axle platform beams 21 are connected to each other through longitudinal connecting rods 22 to form a middle axle platform base, two ends of the longitudinal connecting rods 22 are respectively provided with a threaded section, each threaded section is respectively screwed with a pair of adjusting nuts, and each pair of adjusting nuts 22a are respectively pressed on two side walls of the corresponding middle axle platform beam 21.

Two parallel middle shaft steering shafts 25 are connected between the middle parts of the two middle shaft platform cross beams 21, and two ends of each middle shaft steering shaft 25 are respectively supported on the corresponding middle shaft platform cross beam 21 through a middle shaft steering shaft bearing seat; the two ends of each middle shaft steering shaft 25 are respectively provided with a square tenon 25a. The two middle shaft steering shafts 25 are respectively sleeved with a pair of rubber conical sleeves 29, and the small ends of each pair of rubber conical sleeves 29 face each other, so that the bearing seat of the middle shaft steering shaft is conveniently and stably supported, the automatic centering of the bearing seat is facilitated, and the stable support is realized.

The outer sides of the bearing seats of the two middle axle steering shafts on the same side are respectively fixed with a middle axle platform upright post 23, the top of each middle axle platform upright post 23 is respectively welded with a middle axle platform inclined frame 24, and the lower end of each middle axle platform inclined frame 24 is respectively welded at the end part of a middle axle platform cross beam 21. Bearing seat guide rollers 26 are respectively arranged at the tops of the middle shaft platform upright columns 23, hanging rings 21a are respectively arranged at two ends of the two middle shaft platform cross beams 21, springs 28 are respectively connected on the hanging rings 21a, the springs 28 on the same side are connected through hanging belts 27, and the middle sections of the hanging belts 27 are respectively wrapped on the two bearing seat guide rollers 26 on the same side.

The base of the middle shaft platform is arranged on a top platform of a hydraulic lifting trolley 30, the ends of the two ends of the middle shaft extending out of the bearing seats are respectively placed on the hanging strips 27, the hanging strips 27 sink after being stressed, the springs 28 at the two ends of the hanging strips 27 provide supporting force for the hanging strips 27, the flexible hanging strips 27 can automatically adapt to the diameter of the end of the middle shaft, the end of the middle shaft with different diameters can be stably lifted, and automatic centering can be realized. The middle section of the middle shaft is positioned in a middle shaft bearing seat, and chamfers at two ends of the middle shaft bearing seat are respectively supported on the rubber conical sleeve 29 so as to be stably supported. The square tenon 25a of the middle shaft steering shaft 25 is rotated by a wrench, so that the middle shaft steering shaft 25 drives the rubber conical sleeve 29 on the middle shaft steering shaft to rotate, the rubber conical sleeve 29 drives the middle shaft bearing seat to rotate, a bottom plate of the middle shaft bearing seat is convenient to be attached to a bottom plate of a walking beam, a screw hole in the bottom plate of the middle shaft bearing seat is convenient to align with a screw hole in the bottom of the walking beam, a screw is inserted into the screw hole in the bottom plate of the middle shaft bearing seat from bottom to top and screwed into the screw hole in the bottom of the walking beam, and the middle shaft bearing can be fixed at the bottom of the middle section of the walking beam by screwing the screw.

The distance between the two middle shaft platform cross beams 21 can be adjusted through the screwing positions of the adjusting nuts 22a on the longitudinal connecting rods 22, the adjusting nuts 22a on the inner walls of the two middle shaft platform cross beams are close to each other, and the adjusting nuts 22a on the outer walls of the two middle shaft platform cross beams tightly press and fix the middle shaft platform cross beams 21, so that the middle shaft platform cross beams can adapt to shorter middle shafts. If the centre shaft is longer, the distance between the two centre shaft platform cross beams 21 is increased.

The tail shaft maintenance platform comprises a tail shaft platform base 31, tail shaft platform upright posts 32 which are erected upwards are symmetrically welded on two long sides of the tail shaft platform base 31, tail shaft platform inclined frames 33 are respectively welded on two sides of the upper portion of each tail shaft platform upright post 32, and the lower ends of the tail shaft platform inclined frames 33 are respectively welded on the corresponding long sides of the tail shaft platform base 31.

Interconnect through tail axle platform crossbeam seat respectively between the top of both ends tail axle platform stand 32, and tail axle platform crossbeam seat is on a parallel with the minor face of tail axle platform base 31, and tail axle platform crossbeam seat includes a pair of tail axle platform crossbeam 34 that is parallel to each other and spaced each other, and tail axle platform crossbeam connection seat interconnect is passed through respectively at the both ends of two tail axle platform crossbeams 34. Tail shaft platform crossbeam connecting seat is including connecting base 35 and connecting gland 36, and the bottom of connecting base 35 is located the top of tail shaft platform stand 32, and the base 35 welding is as an organic whole is connected respectively at the both ends of two tail shaft platform crossbeams 34.

Adjusting screw rods 37 are respectively arranged in seams between the two tail shaft platform cross beams 34, positive and negative threads are symmetrically arranged on the two adjusting screw rods 37, positive and negative threads are respectively screwed with positive and negative nuts 38a and 38b, adjusting rib plates 38c which extend out of the seams upwards are respectively connected to the positive and negative threads 38a and 38b, tail beam limiting plates 38d are respectively welded at the upper ends of the two adjusting rib plates 38c, and limiting planes of the two tail beam limiting plates 38d are opposite and perpendicular to the tail shaft platform cross beam seat axis.

Two ends of the adjusting screw 37 are embedded in the semicircular holes of the connecting base 35, the connecting gland 36 is pressed above the connecting base 35 and the end of the adjusting screw, and a screw passes through the screw holes of the connecting gland 36 and the connecting base 35 from top to bottom and is screwed on the top of the tail shaft platform upright post 32.

Adjusting screw bosses 37a are respectively arranged at two ends of the adjusting screw 37, the adjusting screw bosses 37a respectively abut against the outer walls of the corresponding tail shaft platform beam connecting seats, and a Z-shaped crank 37b is connected to the center of the outer end face of one of the adjusting screw bosses 37a.

Four sets of tail shaft platform wheels 39 are arranged below the tail shaft platform base 31, and each tail shaft platform wheel 39 is respectively positioned below the corresponding tail shaft platform upright post 32.

During the frock equipment, earlier place connection base 35 and tail shaft platform crossbeam 34 at tail shaft platform stand 32 top, embedding adjusting screw 37, adjusting screw boss 37a supports and leans on the outer wall of connecting base 35 respectively, plays axial positioning's effect, then presses on and connects gland 36, connects the semicircle orifice of gland 36 and surrounds with the semicircle orifice of connecting base 35, will connect gland 36, connect base 35 and fix jointly at tail shaft platform stand 32 top through the screw.

When moving this frock to tail-boom 19 below, the opening between two pairs of tail-boom limiting plates 38d is greater than the width of tail-boom 19, reduces the walking beam and makes tail-boom 19 fall on tail-boom platform crossbeam 34 and be located between two pairs of tail-boom limiting plates 38d, detaches the connecting screw of the bearing frame of tail-boom 18 and walking beam. The Z-shaped crank 37b is rotated to enable the adjusting screw rod 37 to rotate, the adjusting rib plates 38c are limited in a seam between the two tail shaft platform cross beams 34, the bottom of the tail beam limiting plate 38d is limited above the tail shaft platform cross beams 34, and the adjusting screw rod 37 rotates to enable the orthodontic nut 38a and the anti-orthodontic nut 38b to synchronously move towards each other until the two pairs of tail beam limiting plates 38d are clamped on two side walls of the tail beam 19, so that the tail beam 19 is firmly fixed, and the tail beam 19 is moved out through the tail shaft platform wheels 39. Although the tail beam 19 has a certain distance from the ground and the width is far less than the length, the side turning cannot occur in the moving process due to the fixture.

The connecting rods 20 hinged at two ends of the tail beam 19 are transferred by adopting a connecting rod trolley 40, a connecting rod flange 20a is placed on the connecting rod trolley 40, two arc-shaped plates 40a are welded on a bottom plate of the connecting rod trolley 40, and the two arc-shaped plates 40a are respectively clamped in the excircle and the inner hole of the connecting rod flange 20a. When the tail beam 19 is transported, the connecting rod flanges 20a at the two ends of the two connecting rods 20 are supported on the connecting rod trolley 40 and move synchronously, so that the labor intensity of an operator is further reduced, the boom of a crane is not required to be matched in the whole process, and the operation safety is improved.

The invention relates to a beam maintenance method of an oil pumping unit, which sequentially comprises the following steps: s1, respectively placing walking beam supporting platforms at positions, close to a horse head 16 and a tail shaft 18, below a walking beam 15;

s2, lifting the walking beam 15 to a horizontal state through the two walking beam supporting platforms, and enabling the bottom of the horse head 16 to be separated from the ground, as shown in fig. 6;

s3, disassembling the horse head pin to finish the maintenance of the horse head 16;

s4, placing the middle shaft maintenance platform on a top platform of the hydraulic lifting trolley, moving the middle shaft maintenance platform to the position below the middle shaft 17, and withdrawing the middle shaft 17 after the middle shaft 17 is disassembled and replaced, as shown in FIG. 12;

s5, moving the tail shaft maintenance platform to the position below the tail beam 19;

s6, lowering the two walking beam supporting platforms to enable the horse head 16 to be supported on the ground, then continuously lowering the walking beam supporting platform close to the tail shaft 18 to enable the tail beam 19 to continuously descend and fall on the tail shaft maintenance platform, as shown in figure 17, and then completing separation of the tail shaft bearing seat and the tail of the walking beam;

s7, as shown in figure 17, flanges of connecting rods 20 at two ends of the tail beam 19 are respectively placed on a connecting rod trolley 40, and the tail beam 19 is moved out through a tail shaft maintenance platform and the connecting rod trolley 40 to complete maintenance of the tail shaft 18;

s7, after the tail shaft 18 and the tail beam 19 are reset and assembled, the walking beam supporting platform close to the tail shaft 18 ascends first, and the tail shaft maintenance platform is withdrawn first;

s8, descending the walking beam supporting platform close to the tail shaft 18 to enable the tail beam 19 to fall on the ground, and then continuously descending and withdrawing the walking beam supporting platform close to the tail shaft 18.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention. In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.