CN210551405U - Crusher for sucker rod centralizer - Google Patents
Crusher for sucker rod centralizer Download PDFInfo
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- CN210551405U CN210551405U CN201920952390.0U CN201920952390U CN210551405U CN 210551405 U CN210551405 U CN 210551405U CN 201920952390 U CN201920952390 U CN 201920952390U CN 210551405 U CN210551405 U CN 210551405U
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Abstract
The utility model aims to provide a sucker rod centralizer crusher, which comprises a frame, wherein a synchronous centering clamping mechanism, a synchronous clamping shearing mechanism and a shearing driving mechanism are arranged on the frame; the synchronous clamping and shearing mechanism can axially move relative to the synchronous centering and clamping mechanism under the driving of the shearing driving mechanism. The utility model discloses a it is through the mutual cooperation between synchronous centering clamping mechanism, the synchronous clamping shearing mechanism and the shearing actuating mechanism, can realize the automatic shearing to the sucker rod centralizer, at the shearing in-process, the cutter is hugged closely the sucker rod all the time and is cuted the centralizer, can ensure not to damage the sucker rod body and make the centralizer break away from the sucker rod completely behind the shearing centralizer, cuts the precision height and effectual, has improved work efficiency greatly, has reduced workman's intensity of labour.
Description
Technical Field
The utility model relates to a sucker rod centralizer clears away technical field, in particular to sucker rod centralizer breaker.
Background
The sucker rod moves up and down in the oil pipe, and due to the elastic deformation of the sucker rod, the sucker rod is easy to rub against the wall of the oil pipe, the sucker rod is easy to break off, and the sucker rod is not easy to salvage after entering the oil pipe, so that the production efficiency is influenced. Therefore, people connect the sucker rod centralizer made of nylon materials on the sucker rod, the sucker rod centralizer has the characteristics of strong flexibility, friction resistance, corrosion resistance and the like, and the sucker rod centralizer is in contact with the inner wall of the oil pipe, so that the friction between the sucker rod and the oil pipe can be reduced, and the oil extraction service life of the oil pumping unit is prolonged.
At present, the centralizers mainly comprise a clamp type centralizer, a columnar centralizer, an integral injection molding centralizer and the like. The clamp type centralizer is mutually inserted and locked on the sucker rod in an interference manner through an upper nylon block and a lower nylon block, the radial locking force of the clamp type centralizer and the sucker rod is small, the centralizer is easy to loosen under the influence of the friction force and the temperature of the wall of an oil well, and the centralizer moves on the sucker rod to cause the function failure of eccentric wear prevention. The columnar centralizer can only be arranged on the coupling rings at the two ends of the sucker rod, and can not centralize and protect the weakest middle part of the sucker rod, thereby having no function of eccentric wear prevention. The two structures all adopt clamping structures, and when the structure is stressed underground, the structure is likely to fall off after being damaged, and the fallen part easily causes serious consequences of well blockage. The integral injection molding type centralizer is formed by placing the processing part of the sucker rod into a mold on an injection molding machine, and injecting nylon and other materials into a mold cavity at high temperature and high pressure; generally, three injection molding type centralizers are arranged on each sucker rod, namely, one centralizer is arranged at each of two ends and the middle position; the integral injection molding type centralizer is integrally injected on the sucker rod, is firmly combined with the sucker rod, cannot be loosened under the influence of friction force and temperature of the wall of an oil well, moves on the sucker rod, has excellent eccentric wear prevention effect, and is widely applied in practice.
As is well known, in order to ensure the downhole safety, the sucker rod needs to be lifted out of the ground for cleaning after working for a certain period in an oil well, and the solidified injection molding type centralizer on the sucker rod body needs to be removed before cleaning according to the requirements of cleaning equipment. At present, when a centralizer on a rod body is cleaned, a worker saws with a handheld saw blade, after the centralizer is longitudinally cut by the saw blade, a sucker rod is moved to one side of a material rack, a cutting mark is hit by a hammer, the centralizer is separated from the rod body after being cracked, the working efficiency is low, and the manual labor intensity is high; and, because the work proficiency differs, the body of rod after many cut off the centralizer has the kerf of different depth, loses repairing value, and then leads to the scrapping of sucker rod.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a sucker rod centralizer breaker, it is through synchronous centering clamping mechanism, the synchronous clamp is tight to be cut mechanism and is cuted mutually supporting between the actuating mechanism, can realize the automatic shearing to the sucker rod centralizer, cuts that the precision is high and effectual, has improved work efficiency greatly, has reduced workman's intensity of labour.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a crusher for a sucker rod centralizer comprises a rack, wherein a synchronous centering clamping mechanism, a synchronous clamping shearing mechanism and a shearing driving mechanism are arranged on the rack; the synchronous clamping and shearing mechanism can axially move relative to the synchronous centering and clamping mechanism under the driving of the shearing driving mechanism;
the synchronous centering and clamping mechanism comprises a first sliding block and a second sliding block which are oppositely arranged, a first clamping groove which penetrates through the first sliding block is formed in the radial inner side of the first sliding block, a second clamping groove which penetrates through the second sliding block and is oppositely arranged with the first clamping groove is formed in the radial inner side of the second sliding block, and the first clamping groove and the second clamping groove jointly form a first clamping part of the sucker rod;
the synchronous clamping and shearing mechanism comprises a third sliding block and a fourth sliding block which are oppositely arranged, a first cutter mounting groove which penetrates through the third sliding block is formed in the radial inner side of the third sliding block, and a second cutter mounting groove which penetrates through the fourth sliding block and is oppositely arranged with the first cutter mounting groove is formed in the radial inner side of the fourth sliding block; a first cutter is arranged in the first cutter mounting groove, and a first arc groove which penetrates through the first cutter and is matched with the outer diameter of the sucker rod is formed in the radial inner side of the first cutter; a second cutter is arranged in the second cutter mounting groove, a second arc groove which penetrates through the second cutter and is arranged opposite to the first arc groove is arranged on the radial inner side of the second cutter, and the first arc groove and the second arc groove jointly form a second clamping part of the sucker rod;
the first clamping part and the second clamping part are arranged concentrically;
the cutter heads of the first cutter and the second cutter extend out of the cutter mounting groove towards the first clamping part.
As an improvement of the utility model, the hydraulic pump and the pneumatic cylinder of shearing actuating mechanism including the motor, being connected with the motor, pneumatic cylinder one end articulates in the frame, and the other end articulates on the synchronous clamping shearing mechanism.
As an improvement of the utility model, the synchronous centering clamping mechanism also comprises a base I, a slide block driving device I, a front support I and a rear support I are arranged on the base I, and a guide shaft I is arranged between the front support I and the rear support I; first slider and second slider all overlap and establish on guiding axle I, first slider and second slider can follow I reciprocating motion of guiding axle under slider drive arrangement I's drive, and two reciprocating motion distances equal, opposite direction.
As an improvement of the utility model, the synchronous clamping and shearing mechanism also comprises a base II, a slide block driving device II, a front support II and a rear support II are arranged on the base II, and a guide shaft II is arranged between the front support II and the rear support II; and the third sliding block and the fourth sliding block are sleeved on the guide shaft II, can reciprocate along the guide shaft II under the driving of the sliding block driving device II, and have equal reciprocating movement distance and opposite directions.
As an improvement of the utility model, still be provided with left support and right support in the frame, be provided with guiding axle III between left support and the right support, the tight mechanism cover of shearing of synchronous clamp is established on guiding axle III to can follow guiding axle III and carry out axial displacement under shear actuating mechanism's drive.
As an improvement of the utility model, the longitudinal section of the cutter head is triangular, and the vertex angle of the triangle is the front end of the cutter head.
As an improvement of the utility model, the triangle is an isosceles triangle, and the apex angle of the triangle is 18-45 degrees.
As an improvement of the utility model, the first clamping groove and the second clamping groove are composed of the first inclined part and the second inclined part which is arranged in an up-and-down symmetrical manner with the first inclined part.
As an improvement of the present invention, the centralizer further includes a centralizer detecting element for detecting the position of the centralizer.
As an improvement of the present invention, the first cutter 53 and the second cutter 54 are respectively mounted in the corresponding cutter mounting grooves by screws.
The utility model has the advantages that: the utility model discloses a it is through the mutual cooperation between synchronous centering clamping mechanism, the synchronous clamping shearing mechanism and the shearing actuating mechanism, can realize the automatic shearing to the sucker rod centralizer, at the shearing in-process, the cutter is hugged closely the sucker rod all the time and is cuted the centralizer, can ensure not to damage the sucker rod body and make the centralizer break away from the sucker rod completely behind the shearing centralizer, cuts the precision height and effectual, has improved work efficiency greatly, has reduced workman's intensity of labour. The utility model discloses simple structure, convenient operation, safe and reliable accords with HSE's relevant requirement.
Drawings
FIG. 1 is a schematic view of the overall structure of a sucker rod centralizer crusher of the present invention;
FIG. 2 is a schematic top view of FIG. 1 with the addition of a sucker rod and centralizer;
FIG. 3 is a schematic view of the forward structure of the synchronous centering clamping mechanism of the present invention;
fig. 4 is a schematic view of the forward structure of the synchronous clamping and shearing mechanism of the present invention;
fig. 5 is the overall structure schematic diagram of the shearing assembly line of the present invention.
In the figure: 1. a frame, 2, a left support, 3, a synchronous centering clamping mechanism, 31, a base I, 32, a slide block driving device I, 33, a first slide block, 331, a first clamping groove, 34, a second slide block, 341, a second clamping groove, 35, a rear support I, 36, a front support I, 37, a guide shaft I, 4, a guide shaft III, 5, a synchronous clamping and shearing mechanism, 51, a base II, 52, a slide block driving device II, 53, a first cutter, 54, a second cutter, 55, a third slide block, 56, a fourth slide block, 57, a rear support II, 58, a front support II, 59, a guide shaft II, 6, a cylinder support I, 7, a right support, 8, a hydraulic cylinder, 9, a cylinder support II, 10, a hydraulic pump, 11, a hydraulic oil tank, 12, a motor, 13, a sucker rod, 14, a centralizer, 15, a feeding transmission line, 16, a feeding manipulator, 17, a feeding rack, 18 and a control console, 19. and the discharging conveying line comprises 20 a discharging rack 21 and a discharging manipulator.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.
It should be noted that the terms of orientation such as front, back, up, down, left and right in the embodiments of the present invention are only relative concepts or reference to the normal use status of the product, and should not be considered as limiting.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, a sucker rod centralizer crusher comprises a frame 1, wherein the frame 1 is preferably a frame cabinet body structure (as shown in the embodiment) formed by connecting sectional materials, the connecting mode can adopt welding and the like, the frame 1 can also be in other structural forms, and the utility model discloses do not limit the concrete structure of frame 1. The frame 1 is provided with a synchronous centering clamping mechanism 3, a synchronous clamping and shearing mechanism 5, a shearing driving mechanism, a left support 2 and a right support 7. The utility model discloses do not do the restriction to synchronous centering clamping mechanism 3, synchronous clamping shearing mechanism 5, shearing actuating mechanism, left support 2 and right support 7 have the position in the frame in step, if can set up at the top or the middle part of frame 1, this embodiment is the top setting. The middle clamping mechanism 3 is fixedly installed at the left end of the rack 1, the left support 2 is installed at the bottom of the synchronous centering clamping mechanism 3, the right support 7 is installed on a longitudinal beam (not shown) of the rack 1, and at least one guide shaft III 4 is arranged between the left support 2 and the right support 7. The synchronous clamping and shearing mechanism 5 is sleeved on the guide shaft III 4 and can axially move along the guide shaft III 4 under the driving of the shearing driving mechanism.
Preferably, the frame 1 is also provided with a detection element (e.g., a position sensor) for detecting the position of the centralizer 14.
Synchronous centering clamping mechanism 3 includes base I31 of fixed mounting on frame 1, and fixed mounting can adopt welding or screwed connection etc.. The base I31 is provided with a slide block driving device I32, a front support I36 and a rear support I35 opposite to the front support I36, the front support I36 and the rear support I35 are arranged in two in parallel, and a guide shaft I37 is arranged between the front support I36 and the rear support I35; the first slider 33 and the second slider 34 that set up relatively are overlapped on the guide shaft I37, and first slider 33 and second slider 34 can be followed guide shaft I37 reciprocating motion under the drive of slider drive arrangement I32, and two reciprocating motion distances are equal, and the opposite direction.
The shearing driving mechanism mainly comprises a motor 12, a hydraulic pump 10 connected with the motor 12, a hydraulic cylinder 8 and a hydraulic oil tank 11. The hydraulic cylinder 8 is horizontally arranged, one end of the hydraulic cylinder is hinged with the oil cylinder support II 9 (such as an ear seat) arranged at the right end of the frame 1, and the other end of the hydraulic cylinder is hinged with the oil cylinder support I6 (such as an ear seat) arranged at the right end of the synchronous clamping and shearing mechanism 5. In this embodiment, the hydraulic oil tank 11 is installed below the right portion of the frame 1, and the motor 12 and the hydraulic pump 10 are both installed above the hydraulic oil tank 11, for example, they can be directly installed on the upper plane of the hydraulic oil tank 11, so that the structure is compact, and the installation space is saved. The hydraulic oil tank 11 can also be arranged at other places outside the frame, and the utility model discloses do not limit its concrete installation position.
Synchronous clamping shearing mechanism 5 includes II 51 of base, and oil cylinder support I6 is installed at II 51 right-hand members of base, and II 51 covers of base are established on guiding axle III 4 to can follow guiding axle III 4 and carry out axial displacement under the drive of pneumatic cylinder 8. The base II 51 is provided with a slide block driving device II 52, a front support II 58 and a rear support II 57, the number of the front support II 58 and the number of the rear support II 57 are two, and a guide shaft II 59 is arranged between the front support II 58 and the rear support II 57; the third sliding block 55 and the fourth sliding block 56 which are oppositely arranged are sleeved on the guide shaft II 59, the third sliding block 55 and the fourth sliding block 56 can reciprocate along the guide shaft II 59 under the driving of the sliding block driving device II 52, and the reciprocating distances are equal and the directions are opposite.
A first cutter mounting groove penetrating through the third slider 55 is formed in the radial inner side of the third slider 55, a second cutter mounting groove penetrating through the fourth slider 56 and arranged opposite to the first cutter mounting groove is formed in the radial inner side of the fourth slider 56, and the first cutter mounting groove and the second cutter mounting groove are horizontally arranged; a first cutting knife 53 is installed in the first cutting knife installation groove, and a first arc groove 531 which penetrates through the first cutting knife 53 and is matched with the outer diameter of the sucker rod is formed in the radial inner side of the first cutting knife 53; a second cutter 54 is installed in the second cutter installation groove, a second arc groove 541 which penetrates through the second cutter 54 and is arranged opposite to the first arc groove 531 is arranged on the radial inner side of the second cutter 54, and the first arc groove 531 and the second arc groove 541 are horizontally arranged. Preferably, the arc lengths of the transverse section arcs of the first arc groove and the second arc groove are both smaller than half of the perimeter of the transverse section circle of the sucker rod; the first arc groove 531 and the second arc groove 541 form a second clamping part of the sucker rod together; the first clamping part and the second clamping part are concentrically arranged; the cutter heads of the first cutter 53 and the second cutter 54 extend out of the cutter mounting groove towards the first clamping part; the longitudinal section of the cutter head is triangular, the vertex angle of the triangle is the front end of the cutter head, the triangle is preferably an isosceles triangle, the vertex angle of the triangle is preferably 18-45 degrees, and the minimum width dimension of the cutter head is larger than the maximum wall thickness dimension of the centralizer. The cutter bodies of the first cutter 53 and the second cutter 54 are respectively mounted in the corresponding cutter mounting grooves through screws, so that the assembly and disassembly are convenient.
Preferably, the guide shaft i 37, the guide shaft ii 59, and the guide shaft iii 4 are all optical rods. The driving elements of the sliding block driving device I32 and the sliding block driving device II 52 are cylinders, hydraulic cylinders, motors and the like; when the motor is used, a forward and reverse lead screw structure can be adopted to realize the opposite movement between the sliding blocks, and the technology is the prior art and is not detailed here.
As shown in fig. 5, a crushing method using the sucker rod centralizer crusher specifically includes the following steps:
preparation work: firstly, operating the console 18 to enable the synchronous centering and clamping mechanism 3 and the synchronous clamping and shearing mechanism 5 to be in an opening state, namely, the first sliding block 33 and the second sliding block 34, and the third sliding block 55 and the fourth sliding block 56 are in a separation state; meanwhile, the hydraulic cylinder 8 is in a retraction state, namely the synchronous clamping and shearing mechanism 5 is positioned at the right end of the guide shaft III;
feeding: the sucker rod 13 needing to be cut into the centralizer on the feeding rack 17 is placed on a feeding transmission line 15 through an automatic feeding manipulator 16, the feeding transmission line 15 is started, the feeding transmission line 15 transmits the sucker rod 13 to move forward, and when the sucker rod centralizer 14 is located at an appointed position between the synchronous centering clamping mechanism 3 and the synchronous clamping and cutting mechanism 5, the feeding transmission line 15 stops; in this process, whether the centralizer 14 reaches the specified position is detected by means of a detection element (e.g., a position sensor);
crushing centralizer: the first sliding block 33 and the second sliding block 34 synchronously move in opposite directions, so that the first clamping part clamps the sucker rod 13; the third slide block 55 and the fourth slide block 56 synchronously move in opposite directions, so that the second clamping part clamps the sucker rod 13, namely, the cutter is tightly attached to the sucker rod 13; a piston rod of a hydraulic cylinder 8 of the shearing driving mechanism extends out to push the synchronous clamping and shearing mechanism 5 to move towards the synchronous centering and clamping mechanism 3, so that the shearing of the cutter on the centralizer 13 is completed, namely the centralizer 13 is crushed and falls off;
after the shearing is finished, the synchronous centering and clamping mechanism 3 and the synchronous clamping and shearing mechanism 5 are opened, namely the first sliding block 33 and the second sliding block 34 as well as the third sliding block 55 and the fourth sliding block 56 move back to the back, and the synchronous clamping and shearing mechanism 5 is retreated to the original position; the sucker rod 13 continues to advance, when the detection element detects that the centralizer reaches the designated position, the steps are repeated to shear the centralizer 14 until all the centralizers 14 on the sucker rod 13 are completely broken and fall off, and at the moment, the sucker rod 13 is transmitted to the discharging transmission line 19;
discharging: the discharging transmission line 19 is started, so that the sucker rod 13 is automatically placed on the discharging rack 20 by the discharging manipulator 21 after the sucker rod 13 reaches a specified position.
The control console 18 comprises a control panel, a man-machine interchange interface and a PLC control program, and is respectively connected with a driving element, a detection element, a manipulator, a transmission line and the like so as to realize actual automatic shearing, and the control console 18 can be arranged at a place far away from an operation site to carry out remote control, so that the operation is convenient, safe and reliable.
The above is a detailed introduction to the crusher of the sucker rod centralizer provided by the utility model, and the structure principle and the implementation mode of the utility model are explained by applying specific examples, and the above examples are only used for helping to understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (10)
1. The utility model provides a sucker rod centralizer breaker which characterized in that: the device comprises a rack (1), wherein a synchronous centering clamping mechanism (3), a synchronous clamping and shearing mechanism (5) and a shearing driving mechanism are arranged on the rack (1); the synchronous clamping and shearing mechanism (5) can axially move relative to the synchronous centering and clamping mechanism (3) under the driving of the shearing driving mechanism;
the synchronous centering and clamping mechanism (3) comprises a first sliding block (33) and a second sliding block (34) which are arranged oppositely, a first clamping groove (331) penetrating through the first sliding block (33) is formed in the radial inner side of the first sliding block (33), a second clamping groove (341) penetrating through the second sliding block (34) and arranged oppositely to the first clamping groove (331) is formed in the radial inner side of the second sliding block (34), and the first clamping groove (331) and the second clamping groove (341) jointly form a first clamping part of the sucker rod;
the synchronous clamping and shearing mechanism (5) comprises a third sliding block (55) and a fourth sliding block (56) which are oppositely arranged, a first cutter mounting groove which penetrates through the third sliding block (55) is formed in the radial inner side of the third sliding block (55), and a second cutter mounting groove which penetrates through the fourth sliding block (56) and is oppositely arranged with the first cutter mounting groove is formed in the radial inner side of the fourth sliding block (56); a first cutter (53) is installed in the first cutter installation groove, and a first arc groove (531) which penetrates through the first cutter (53) and is matched with the outer diameter of the sucker rod is formed in the radial inner side of the first cutter (53); a second cutter (54) is installed in the second cutter installation groove, a second arc groove (541) which penetrates through the second cutter (54) and is arranged opposite to the first arc groove (531) is arranged on the radial inner side of the second cutter (54), and the first arc groove (531) and the second arc groove (541) jointly form a second clamping part of the sucker rod;
the first clamping part and the second clamping part are arranged concentrically;
the cutter heads of the first cutter (53) and the second cutter (54) extend out of the cutter mounting grooves towards the first clamping part.
2. The sucker rod centralizer crusher of claim 1, wherein: the shearing driving mechanism comprises a motor (12), a hydraulic pump (10) and a hydraulic cylinder (8), wherein the hydraulic pump (10) is connected with the motor (12), one end of the hydraulic cylinder (8) is hinged on the rack (1), and the other end of the hydraulic cylinder is hinged on the synchronous clamping and shearing mechanism (5).
3. The sucker rod centralizer crusher of claim 1, wherein: the synchronous centering and clamping mechanism (3) further comprises a base I (31), a sliding block driving device I (32), a front support I (36) and a rear support I (35) are arranged on the base I (31), and a guide shaft I (37) is arranged between the front support I (36) and the rear support I (35); first slider (33) and second slider (34) all overlap and establish on guiding axle I (37), first slider (33) and second slider (34) can follow guiding axle I (37) reciprocating motion under the drive of slider drive arrangement I (32), and two reciprocating motion distances are equal, the opposite direction.
4. The sucker rod centralizer crusher of claim 1, wherein: the synchronous clamping and shearing mechanism (5) further comprises a base II (51), a sliding block driving device II (52), a front support II (58) and a rear support II (57) are arranged on the base II (51), and a guide shaft II (59) is arranged between the front support II (58) and the rear support II (57); the third sliding block (55) and the fourth sliding block (56) are sleeved on the guide shaft II (59), the third sliding block (55) and the fourth sliding block (56) can reciprocate along the guide shaft II (59) under the driving of the sliding block driving device II (52), the reciprocating distances of the two sliding blocks are equal, and the directions of the two reciprocating movements are opposite.
5. The sucker rod centralizer crusher of claim 1, wherein: still be provided with left support (2) and right branch seat (7) on frame (1), be provided with guiding axle III (4) between left support (2) and right branch seat (7), synchronous clamping shears mechanism (5) cover and establishes on guiding axle III (4) to can follow guiding axle III (4) and carry out axial displacement under the drive of shearing actuating mechanism.
6. The sucker rod centralizer crusher of any one of claims 1 to 5, wherein: the longitudinal section of the cutter head is triangular, and the vertex angle of the triangle is the front end of the cutter head.
7. The sucker rod centralizer crusher of claim 6, wherein: the triangle is an isosceles triangle, and the vertex angle of the triangle is 18-45 degrees.
8. The sucker rod centralizer crusher of any one of claims 1 to 5, wherein: the first clamping groove (331) and the second clamping groove (341) are both composed of a first inclined part and a second inclined part which is vertically and symmetrically arranged with the first inclined part.
9. The sucker rod centralizer crusher of any one of claims 1 to 5, wherein: a centralizer detection element for detecting a position of the centralizer is also included.
10. The sucker rod centralizer crusher of any one of claims 1 to 5, wherein: the first cutter (53) and the second cutter (54) are respectively installed in the corresponding cutter installation grooves through screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920952390.0U CN210551405U (en) | 2019-06-24 | 2019-06-24 | Crusher for sucker rod centralizer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920952390.0U CN210551405U (en) | 2019-06-24 | 2019-06-24 | Crusher for sucker rod centralizer |
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| CN210551405U true CN210551405U (en) | 2020-05-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110253642A (en) * | 2019-06-24 | 2019-09-20 | 濮阳市创立石油机械有限公司 | A kind of oil pumping rod centering device crusher and its breaking method |
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2019
- 2019-06-24 CN CN201920952390.0U patent/CN210551405U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110253642A (en) * | 2019-06-24 | 2019-09-20 | 濮阳市创立石油机械有限公司 | A kind of oil pumping rod centering device crusher and its breaking method |
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