High-pressure-resistant sucker rod with locking structure

Abstract

The invention relates to the technical field of sucker rods, and provides a high-pressure-resistant sucker rod with a locking structure, the high-pressure-resistant sucker rod comprises a connecting assembly and sucker rod assemblies, the sucker rod assemblies are fixedly mounted at the upper end and the lower end of the connecting assembly, and the connecting assembly comprises a rotating mechanism; elastic blocking assemblies are fixedly connected to the upper and lower ends of the periphery of the middle of the rotating mechanism, connecting mechanisms are rotatably connected to the peripheries of the upper and lower ends of the rotating mechanism, impact assemblies are fixedly connected to the sides, close to the middle of the rotating mechanism, of the connecting mechanisms, and adjusting assemblies are arranged on one sides of the impact assemblies. The balls II in the connecting seats at the upper end and the lower end rotate on the peripheries of the upper end and the lower end of the rotating seat, so that the connecting seats at the upper end and the lower end can easily rotate on the periphery of the rotating seat, and the twisting force of the sucker rod assembly is released; the situation that the sucker rod assembly is twisted due to the change of the direction of force acting on the sucker rod assembly in the oil pumping process, and connection between the sucker rod assembly and the connecting assembly is loosened is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sucker rod, in particular to a high-pressure-resistant sucker rod with locking structure. BACKGROUND

[0002] At present, the connection between the sucker rod and the connecting piece generally adopts a threaded connection mode, which is widely used in the industry due to its simple structure, convenient processing and high assembly efficiency. However, in the actual pumping operation process, the threaded connection between the sucker rod and the connecting piece often appears loose, and in severe cases, it even causes the sucker rod string to fall off, resulting in interruption of production and high well repair costs. The core cause of thread loosening is the inevitable torsional motion of the sucker rod during the up-and-down pumping process. The specific reasons include: first, when the sucker rod reciprocates, it is affected by factors such as the straightness deviation of the downhole casing string, the well trajectory bending, and the uneven lithology of the formation, so its axis is difficult to always coincide with the casing axis, and thus it is subjected to continuous radial eccentric load during up-and-down movement, causing the sucker rod to twist around its own axis; second, during the suction and discharge cycle of the pumping unit, the opening and closing of the pump valve will produce periodic impact load, which is transmitted to the sucker rod through the pump rod, causing the sucker rod to produce instantaneous torsional vibration while the axial force fluctuates; third, after the multi-section sucker rod is spliced, the processing errors and assembly gaps of each section of the rod body will cause uneven stress distribution of the whole rod string, and when reciprocating pumping, the torsional effect of the threaded connection is aggravated, eventually leading to thread loosening and falling off risk. SUMMARY

[0003] In view of the problems existing in the prior art, the purpose of the present application is to provide a high-pressure-resistant sucker rod with locking structure to solve the problems raised in the background art.

[0004] To solve the above problems, the present application adopts the following technical solution: a high-pressure-resistant sucker rod with locking structure, comprising a connecting assembly and a sucker rod assembly, the upper and lower ends of the connecting assembly are fixedly installed with the sucker rod assembly, the connecting assembly comprises a rotating mechanism, the upper and lower ends of the outer periphery of the rotating mechanism are fixedly connected with elastic blocking assemblies, the upper and lower ends of the outer periphery of the rotating mechanism are rotatably connected with connecting mechanisms, one side of the connecting mechanism close to the middle part of the rotating mechanism is fixedly connected with an impact assembly, one side of the impact assembly is provided with an adjusting assembly, the elastic blocking assembly comprises a sliding block, one side of the sliding block close to the other is fixedly connected with a spring one, one side of the sliding block away from the other is provided with a round hole one, the inside of the round hole one is rotatably connected with a round ball one, the impact assembly comprises an impact column, the lower end of the impact column is provided with an arc-shaped opening, one side of the impact column is fixedly connected with a straight rack, the upper end of the impact column is fixedly connected with a spring two.

[0005] Preferably, the sucker rod assembly comprises a rod body, the upper and lower ends of the rod body are provided with convex rings, the outer periphery of the convex ring is uniformly distributed with a flat mouth, and the upper and lower ends of the rod body are provided with external threaded mouths.

[0006] Preferably, the rotating mechanism comprises a rotating seat, the upper and lower ends of the middle part of the rotating seat are provided with annular grooves, the middle part of the rotating seat is uniformly distributed with sliding grooves and capillary channels, the upper and lower ends of the rotating seat are fixedly connected with gaskets, and the inner part of the annular groove is uniformly distributed with arc-shaped racks.

[0007] Preferably, the upper and lower annular grooves are communicated through the sliding grooves, and the capillary channels are communicated with the sliding grooves.

[0008] Preferably, the outer periphery of the rotating seat is slidingly connected in the inner part of the upper and lower ends of the sliding groove, and the side, away from the rotating seat, of the gasket is attached to the end, close to the rod body, of the upper and lower rod bodies.

[0009] Preferably, the connecting mechanism comprises a connecting seat, the inner part of the side, close to the impact assembly, of the connecting seat is uniformly provided with round mouths two, the inner part of the round mouth two is rotatably connected with a ball two, the inner part of the side, away from the impact assembly, of the connecting seat is provided with an internal threaded mouth, the outer periphery of the side, away from the impact assembly, of the connecting seat is uniformly provided with flat mouths two, and the side, close to the impact assembly, of the connecting seat is uniformly provided with sliding grooves two.

[0010] Preferably, the inner periphery of the internal threaded mouth is threadedly connected with the outer periphery of the external threaded mouth in the middle part, the outer periphery of the impact column is slidingly connected in the inner part of the sliding groove two, and the close-to-each-other ends of the upper and lower connecting seats are rotatably connected with the outer periphery of the upper and lower ends of the rotating seat.

[0011] Preferably, the adjusting assembly comprises a mounting seat, the side of the mounting seat is rotatably connected with a connecting column, the outer periphery of the connecting column is fixedly connected with a ratchet wheel and a gear two, the outer periphery of the ratchet wheel is rotatably connected with a rotating ring mouth, the outer periphery of the rotating ring mouth is fixedly connected with a gear one, the inner periphery of the rotating ring mouth is uniformly distributed with adjusting rods, the outer periphery of the adjusting rod is fixedly connected with a pawl, and the side, away from the ratchet wheel, of the pawl is fixedly connected with a spring three.

[0012] Preferably, the side, close to the connecting seat, of the mounting seat is fixedly connected with the inner mouth of the close-to-each-other sides of the upper and lower connecting seats, and the gear two is engaged with the straight rack.

[0013] The high-pressure-resistant sucker rod with the locking structure has the following beneficial effects: 1. When the oil pumping process, a certain section of the sucker rod assembly due to uneven stress and bending caused by the sucker rod assembly torsional force, through the upper and lower end of the connecting seat in the ball II in the rotating seat of the upper and lower end of the outer circle, so that the upper and lower end of the connecting seat can easily rotate in the outer circle of the rotating seat, and then release the torsional force of the sucker rod assembly, to avoid the change of the force direction to the sucker rod assembly during the oil pumping process caused by the sucker rod assembly twist and appear loose condition of the connection assembly and connection assembly.

[0014] 2. When the twist direction and the direction of the connection assembly and the connection assembly thread loose, the twisted sucker rod assembly will drive the connecting seat connected with it to rotate in the outer circle of the rotating seat, and then drive the impact column inside the connecting seat to rotate, the arc-shaped port at the lower end of the impact column will impact the ball I at the upper end of the sliding block, the impact will generate a counter force, which will act on the connecting seat, so that the inner thread port and the outer thread port are connected more tightly. At the same time, spring II and spring I can make the impact column and the ball I inside the sliding block impact each other, respectively, so that the impact column is retracted into the sliding groove II and the sliding block is retracted into the sliding groove I. This not only makes it impossible to affect the release of the torsional force of the sucker rod assembly, but also makes the thread connection between the outer thread port and the inner thread port not too tight, causing the sliding silk condition, and the impact can make the impact column and the sliding block reset, making the thread connection between the inner thread port and the outer thread port more tightly connected.

[0015] 3. When the twist direction and the direction of the connection assembly and the connection assembly thread tight, in order to avoid the arc-shaped port at the lower end of the impact column impacting the ball I at the upper end of the sliding block causing the thread between the inner thread port and the outer thread port to loosen, before impact, the twisted sucker rod assembly will drive the connecting seat connected with it to rotate in the outer circle of the rotating seat, and then drive the gear I to rotate through the mounting seat and the connecting column. Gear I will first engage with the arc-shaped rack. At this time, through the mutual engagement of the pawl and the ratchet, the gear I drives the gear II in the outer circle of the connecting column through the rotating ring port and the ratchet, and through the engagement with the straight rack, all the impact columns are retracted into the sliding groove II, so that the thread does not loosen. Conversely, when the twist direction and the direction of the connection assembly and the connection assembly thread loose, the rotating direction of the gear I will make all the pawls and ratchets disengage. At this time, the connecting column cannot rotate, and the impact column will not extend outward too much before impact, causing the connecting seat and the rotating seat to be unable to rotate relative to each other. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0017] Figure 1 A front view perspective schematic diagram of a high-pressure-resistant sucker rod with a locking structure provided by the present application is shown in the figure. Figure 2 A front view perspective schematic diagram of a high-pressure-resistant sucker rod with a locking structure provided by the present application is shown in the figure. Figure 3 A front view perspective schematic diagram of a high-pressure-resistant sucker rod with a locking structure provided by the present application is shown in the figure. Figure 4 A front view perspective schematic diagram of a high-pressure-resistant sucker rod with a locking structure provided by the present application is shown in the figure. Figure 5 A front view perspective schematic diagram of a high-pressure-resistant sucker rod with a locking structure provided by the present application is shown in the figure. Figure 6 A front view perspective schematic diagram of a high-pressure-resistant sucker rod with a locking structure provided by the present application is shown in the figure. Figure 7 A front view perspective schematic diagram of a high-pressure-resistant sucker rod with a locking structure provided by the present application is shown in the figure. Figure 8 A front view perspective schematic diagram of a high-pressure-resistant sucker rod with a locking structure provided by the present application is shown in the figure.

[0018] In the figure: 100, a sucker rod assembly; 110, a rod body; 120, a convex ring; 130, a flat port one; 140, an external threaded port; 200, a connecting assembly; 210, a rotating mechanism; 211, a rotating seat; 212, an annular groove; 213, a sliding groove one; 214, a capillary channel; 215, a gasket; 216, an arc-shaped rack; 220, an elastic resistance assembly; 221, a sliding block; 222, a round port one; 223, a round ball one; 224, a spring one; 230, a connecting mechanism; 231, a connecting seat; 232, a round port two; 233, a round ball two; 234, an internal threaded port; 235, a flat port two; 236, a sliding groove two; 240, a striking assembly; 241, a striking column; 242, a straight rack; 243, a spring two; 244, an arc-shaped port; 250, an adjusting assembly; 251, a mounting seat; 252, a connecting column; 253, a ratchet wheel; 254, a rotating ring port; 255, an adjusting rod; 256, a pawl; 257, a spring three; 258, a gear one; 259, a gear two. Detailed Implementation

[0019] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0020] like Figures 1-8 As shown, this embodiment proposes a high-pressure resistant sucker rod with a locking structure, including a connecting assembly 200 and a sucker rod assembly 100. The upper and lower ends of the connecting assembly 200 are fixedly mounted with the sucker rod assembly 100. The connecting assembly 200 includes a rotating mechanism 210. The upper and lower ends of the middle outer periphery of the rotating mechanism 210 are fixedly connected with elastic blocking assemblies 220. The upper and lower outer peripheries of the rotating mechanism 210 are rotatably connected with connecting mechanisms 230. The side of the connecting mechanism 230 near the middle of the rotating mechanism 210 is fixedly connected with an impact assembly 240. An adjustment assembly 250 is provided on one side of the impact assembly 240.

[0021] In this embodiment, the sucker rod assembly 100 includes a rod body 110. The upper and lower ends of the rod body 110 are provided with protruding rings 120 on their outer periphery. The outer periphery of the protruding rings 120 is evenly distributed with flat openings 130. The upper and lower ends of the rod body 110 are provided with external threaded openings 140.

[0022] Specifically, during installation, by using an adjustable wrench in conjunction with a flathead 130 and a flathead 235, the sucker rod assembly 100 and the connecting assembly 200 can be gradually connected and lowered into the oil well. The uppermost sucker rod assembly 100 is then connected to the oil pump, pumping clean crude oil from outside the well into the sucker rod assembly 100 and the connecting assembly 200 and applying continuous pressure. This prevents crude oil from entering the well through any gaps in the connecting assembly 200. During pumping, if a section of the sucker rod assembly 100 is subjected to pressure... When uneven force causes bending and generates torsional force in the sucker rod assembly 100, the ball 233 in the upper and lower end connecting seat 231 rotates on the outer periphery of the upper and lower ends of the rotating seat 211, thereby allowing the upper and lower end connecting seat 231 to easily rotate on the outer periphery of the rotating seat 211, thus releasing the torsional force of the sucker rod assembly 100. This prevents the sucker rod assembly 100 from becoming torsion due to changes in the direction of the force acting on it during the oil extraction process, which could lead to loosening of the connection between the sucker rod assembly 100 and the connecting assembly 200.

[0023] In this embodiment, the connecting mechanism 230 includes a connecting seat 231. The connecting seat 231 has a circular opening 232 evenly distributed inside on the side near the impact component 240. A round bead 233 is rotatably connected inside the circular opening 232. The connecting seat 231 has an internal thread opening 234 evenly distributed inside on the side away from the impact component 240. The connecting seat 231 has a flat opening 235 evenly distributed on the outer periphery of the side away from the impact component 240. The connecting seat 231 has a sliding groove 236 evenly distributed at the end near the impact component 240.

[0024] In this embodiment, the inner circumference of the internal threaded port 234 is threadedly connected to the outer circumference of the middle external threaded port 140, the outer circumference of the impact post 241 is slidably connected to the inside of the sliding groove 236, and the upper and lower connecting seats 231 are rotatably connected to the outer circumference of the upper and lower ends of the rotating seat 211.

[0025] In this embodiment, the elastic blocking component 220 includes a slider 221. A spring 224 is fixedly connected to the side of the upper and lower sliders 221 that are close to each other. A round opening 222 is opened on the side of the upper and lower sliders 221 that are far apart from each other. A ball 223 is rotatably connected inside the round opening 222. The impact component 240 includes an impact post 241. An arc-shaped opening 244 is opened at the lower end of the impact post 241. A straight rack 242 is fixedly connected to one side of the impact post 241. A spring 243 is fixedly connected to the upper end of the impact post 241.

[0026] In this embodiment, the rotating mechanism 210 includes a rotating seat 211. The upper and lower ends of the middle part of the rotating seat 211 are provided with annular grooves 212. The middle part of the rotating seat 211 is evenly distributed with sliding grooves 213 and capillary channels 214. Washers 215 are fixedly connected to the upper and lower ends of the rotating seat 211. Arc-shaped racks 216 are evenly distributed inside the annular grooves 212.

[0027] In this embodiment, the upper and lower annular grooves 212 are both connected through the sliding groove 213, and the capillary channels 214 are all connected to the sliding groove 213.

[0028] In this embodiment, the outer periphery of the rotating seat 211 is slidably connected to the inner ends of the upper and lower ends of the sliding groove 213, and the side of the washer 215 away from the rotating seat 211 is in contact with the end of the upper and lower rods 110.

[0029] Specifically, when the direction of torsion is consistent with the direction of thread loosening of the sucker rod assembly 100 and the connecting assembly 200, the torsion of the sucker rod assembly 100 will cause the connecting seat 231 connected to it to rotate on the outer periphery of the rotating seat 211, thereby causing the impact post 241 inside the connecting seat 231 to rotate. The arc-shaped opening 244 at the lower end of the impact post 241 will impact the ball 223 at the upper end of the slider 221. The impact will generate a reaction force, which will act on the connecting seat 231, making the threaded connection between the internal thread opening 234 and the external thread opening 140 tighter. At the same time, the spring 243 and the spring The first 224 allows the impact post 241 to retract into the second sliding groove 236 and the slider 221 to retract into the first sliding groove 213 after impact with the ball 223 inside the slider 221. This not only prevents the release of torsional force by the sucker rod assembly 100, but also prevents the threaded connection between the external thread port 140 and the internal thread port 234 from being too tight, causing stripping. Moreover, after the impact, the impact post 241 and the slider 221 can be reset, making it easier for the threaded connection between the internal thread port 234 and the external thread port 140 to be tighter in the next impact.

[0030] In this embodiment, the adjustment component 250 includes a mounting base 251. A connecting post 252 is rotatably connected to one side of the mounting base 251. A ratchet 253 and a gear 259 are fixedly connected to the outer periphery of the connecting post 252. A rotating ring 254 is rotatably connected to the outer periphery of the ratchet 253. A gear 258 is fixedly connected to the outer periphery of the rotating ring 254. Adjustment rods 255 are evenly distributed on the inner periphery of the rotating ring 254. A pawl 256 is fixedly connected to the outer periphery of the adjustment rod 255. A spring 257 is fixedly connected to the side of the pawl 256 away from the ratchet 253.

[0031] In this embodiment, the side of the mounting base 251 near the connecting base 231 is fixedly connected to the inner opening of the upper and lower connecting bases 231 that are close to each other, and the gears 259 mesh with the rack 242.

[0032] Specifically, when the direction of torsion is consistent with the direction of thread tightening of the sucker rod assembly 100 and the connecting assembly 200, in order to prevent the arc-shaped opening 244 at the lower end of the impact post 241 from impacting the ball 223 at the upper end of the slider 221, causing the threads between the internal thread opening 234 and the external thread opening 140 to loosen, before the impact, the torsion of the sucker rod assembly 100 will drive the connecting seat 231 connected to it to rotate on the outer circumference of the rotating seat 211, and then drive the gear 258 to rotate through the mounting seat 251 and the connecting post 252. The gear 258 will first mesh with the arc-shaped rack 216. At this time, through the mutual meshing of the pawl 256 and the ratchet 253, the gear 258 will rotate through the rotating ring opening 254 and the ratchet 253. 3. The gear 259 on the outer periphery of the connecting column 252 rotates. Through meshing with the rack 242, all the impact columns 241 retract into the sliding groove 236, thus preventing them from impacting the ball 233 inside the slider 221 and causing the threads to loosen. Conversely, when the direction of rotation is consistent with the direction of thread loosening of the sucker rod assembly 100 and the connecting assembly 200, the rotation direction of the gear 258 will cause all the pawls 256 and ratchet 253 to disengage. At this time, the connecting column 252 cannot rotate, and the impact column 241 will not extend outward too much before impact, causing it to press against the inside of the annular groove 212, resulting in the connecting seat 231 and the rotating seat 211 being unable to rotate relative to each other.

[0033] It should be noted that in this application, since the gap between the rotating seat 211 and the connecting seat 231 is very small, and the diameter of the capillary channel 214 is also very small, the amount of clean crude oil pumped into the oil well is negligible compared to the amount of oil pumped. This is only to prevent slag and impurities in the crude oil inside the oil well from entering the gaps and holes of the connecting component 200, thus preventing the connecting component 200 from rotating and automatically locking. In actual use, this will not affect the actual oil pumping efficiency of the oil well.

[0034] Working Principle: During actual use and installation, the sucker rod assembly 100 and connecting assembly 200 are gradually connected and lowered into the oil well by using an adjustable wrench in conjunction with the flat-end 130 and flat-end 235. The uppermost sucker rod assembly 100 is then connected to the oil pump, pumping clean crude oil from outside the oil well into the sucker rod assembly 100 and connecting assembly 200 and applying continuous pressure. This prevents crude oil from entering the oil well through any gaps in the connecting assembly 200. During the pumping process, if a section of the sucker rod assembly 100 bends due to uneven stress, causing torsional force, the ball 233 in the upper and lower connecting seats 231 rotates on the outer circumference of the upper and lower ends of the rotating seat 211, thereby causing the upper and lower connecting seats to rotate. 231 can easily rotate around the outer periphery of the rotating seat 211, thereby releasing the torsional force of the sucker rod assembly 100. This prevents the sucker rod assembly 100 from becoming loose due to changes in the direction of the force acting on it during the oil extraction process, which could cause it to twist. When the direction of twisting is consistent with the direction of loosening of the threads of the sucker rod assembly 100 and the connecting assembly 200, the twisted sucker rod assembly 100 will cause the connecting seat 231 connected to it to rotate around the outer periphery of the rotating seat 211. This will cause the impact post 241 inside the connecting seat 231 to rotate. The arc-shaped opening 244 at the lower end of the impact post 241 will strike the ball 223 at the upper end of the slider 221. The impact will generate a reaction force, which will act on the connecting seat 221. 31, making the threaded connection between the internal threaded port 234 and the external threaded port 140 tighter. Simultaneously, springs 243 and 224 ensure that after the impact pin 241 impacts the ball 223 inside the slider 221, the impact pin 241 retracts into the sliding groove 236 and the slider 221 retracts into the sliding groove 213, respectively. This not only prevents the release of torsional force from the sucker rod assembly 100, but also prevents the threaded connection between the external threaded port 140 and the internal threaded port 234 from becoming too tight, thus avoiding stripping. Furthermore, after the impact, the impact pin 241 and the slider 221 reset, facilitating a tighter threaded connection between the internal threaded port 234 and the external threaded port 140 upon the next impact. When the torsion direction is opposite to that of the sucker rod assembly 100... When the threads of the 0 and connecting assembly 200 are tightened in the same direction, to prevent the arc-shaped opening 244 at the lower end of the impact column 241 from impacting the ball 223 at the upper end of the slider 221, causing loosening of the threads between the internal thread opening 234 and the external thread opening 140, the torsion sucker rod assembly 100 will drive the connecting seat 231 connected to it to rotate on the outer periphery of the rotating seat 211 before impact. This will then drive the gear 258 to rotate through the mounting seat 251 and the connecting column 252. The gear 258 will first mesh with the arc-shaped rack 216. At this time, through the mutual meshing of the pawl 256 and the ratchet 253, the gear 258 will drive the gear 259 on the outer periphery of the connecting column 252 to rotate through the rotating ring opening 254 and the ratchet 253. Through meshing with the straight rack 242,This causes all the impact pins 241 to retract into the sliding groove 236, preventing them from impacting the balls 233 inside the slider 221 and causing the threads to loosen. Conversely, when the direction of rotation is consistent with the direction of thread loosening in the sucker rod assembly 100 and the connecting assembly 200, the rotation direction of gear 258 will cause all the pawls 256 and ratchet 253 to disengage. At this time, the connecting pin 252 cannot rotate, and the impact pins 241 will not extend outward too much before impact, thus preventing them from pressing against the inside of the annular groove 212 and causing the connecting seat 231 and the rotating seat 211 to be unable to rotate relative to each other.

[0035] The above embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Although the invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the invention do not depart from the spirit and scope of the invention and should be covered within the scope of the claims of the invention.

Claims

1. A high pressure resistant sucker rod with locking structure, comprising a connecting assembly (200) and a sucker rod assembly (100), characterized in that, The upper and lower ends of the connecting assembly (200) are fixedly installed with the sucker rod assembly (100), the connecting assembly (200) comprises a rotating mechanism (210), the outer periphery of the middle part of the rotating mechanism (210) is fixedly connected with elastic resistance assemblies (220) at the upper and lower ends, the outer periphery of the upper and lower ends of the rotating mechanism (210) is rotatably connected with connecting mechanisms (230), the side of the connecting mechanism (230) close to the middle part of the rotating mechanism (210) is fixedly connected with impact assemblies (240), one side of the impact assembly (240) is provided with an adjusting assembly (250), the elastic resistance assembly (220) comprises a sliding block (221), the side of the sliding block (221) close to the upper and lower ends is fixedly connected with a spring (224), the side of the sliding block (221) away from the upper and lower ends is provided with a round hole (222), the inner part of the round hole (222) is rotatably connected with a ball (223), the impact assembly (240) comprises an impact column (241), the lower end of the impact column (241) is provided with an arc-shaped hole (244), the side of the impact column (241) is fixedly connected with a straight gear rack (242), and the upper end of the impact column (241) is fixedly connected with a spring (243).

2. The high pressure resistant sucker rod with locking structure according to claim 1, characterized in that, The sucker rod assembly (100) comprises a rod body (110), the outer periphery of the upper and lower ends of the rod body (110) is provided with a convex ring (120), and the outer periphery of the convex ring (120) is uniformly distributed with a flat hole (130); and the upper and lower ends of the rod body (110) are provided with an external thread hole (140).

3. A high pressure resistant sucker rod with locking structure according to claim 2, characterized in that, The rotating mechanism (210) comprises a rotating seat (211), the upper and lower ends of the middle part of the rotating seat (211) are provided with an annular groove (212), the middle part of the rotating seat (211) is uniformly distributed with a sliding groove (213) and a capillary channel (214), and the upper and lower ends of the rotating seat (211) are fixedly connected with a gasket (215); and the inner part of the annular groove (212) is uniformly distributed with an arc-shaped gear rack (216).

4. The high pressure resistant sucker rod with locking structure according to claim 3, characterized in that, The upper and lower annular grooves (212) are communicated through the sliding grooves (213), and the capillary channels (214) are communicated with the sliding grooves (213).

5. The high pressure resistant sucker rod with locking structure according to claim 3, characterized in that, The outer periphery of the rotating seat (211) is slidably connected in the inner part of the upper and lower ends of the sliding groove (213), and the side of the gasket (215) away from the rotating seat (211) is attached to the end of the rod body (110) close to the upper and lower ends.

6. The high pressure resistant sucker rod with locking structure according to claim 2, characterized in that, The connecting mechanism (230) comprises a connecting seat (231), the inner part of the side of the connecting seat (231) close to the impact assembly (240) is uniformly provided with a round hole (232), the inner part of the round hole (232) is rotatably connected with a ball (233), the inner part of the side of the connecting seat (231) away from the impact assembly (240) is provided with an internal thread hole (234), the outer periphery of the side of the connecting seat (231) away from the impact assembly (240) is uniformly provided with a flat hole (235), and the side of the connecting seat (231) close to the impact assembly (240) is uniformly provided with a sliding groove (236).

7. A high pressure resistant sucker rod with locking structure according to claim 6, characterized in that, The inner periphery of the female threaded mouth (234) is threadedly connected with the outer periphery of the male threaded mouth (140), the outer periphery of the impact column (241) is slidingly connected with the inner periphery of the sliding groove two (236), and the upper and lower ends of the rotating seat (211) are rotatably connected with the upper and lower ends of the connecting seat (231).

8. The high pressure resistant sucker rod with locking structure according to claim 6, characterized in that, The adjusting assembly (250) comprises a mounting seat (251), one side of the mounting seat (251) is rotatably connected with a connecting column (252), the outer periphery of the connecting column (252) is fixedly connected with a ratchet wheel (253) and a gear two (259), the outer periphery of the ratchet wheel (253) is rotatably connected with a rotating ring mouth (254), the outer periphery of the rotating ring mouth (254) is fixedly connected with a gear one (258), the inner periphery of the rotating ring mouth (254) is uniformly distributed with an adjusting rod (255), the outer periphery of the adjusting rod (255) is fixedly connected with a ratchet pawl (256), and one side of the ratchet pawl (256) away from the ratchet wheel (253) is fixedly connected with a spring three (257).

9. A high pressure resistant sucker rod with locking structure according to claim 8, characterized in that, The mounting seat (251) is fixedly connected with the inner mouth of the upper and lower connecting seats (231) on the side close to the connecting seat (231), and the gear two (259) is engaged with the straight rack (242).

Images