Pneumatic rocker arm of well drilling and workover racking platform

Abstract

The utility model provides a well drilling and workover racking platform pneumatic rocker arm, which relates to the technical field of petroleum drilling and comprises a pneumatic rocker arm and a pneumatic control system for controlling the pneumatic rocker arm to act. The pneumatic rocker arm comprises a base, an upper cover, a rack, a first gear and a second gear. By designing a pneumatic rocker arm and an air pressure control system, when a racking platform operates a drill rod to be pulled into a finger board, a user steps on a first pedal air switch to enable the rocker arm to rotate outwards so as to limit a drill column from sliding outwards, and in this way, personal injury events caused by slippage of the drill column in the operation process can be avoided; a user can step on the second pedal air switch to enable the rocker arm to rotate inwards, the process can assist in pushing the drill rod into the finger board, and therefore labor is saved for the user, and safety is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of oil drilling, in particular to a pneumatic rocker arm for a second-layer drilling and repairing platform and a use method thereof. Background Art

[0002] In recent years, with the continuous increase in drilling depth, the load on the drilling rig has become heavier, the number of drilling tools placed in the drill pipe box on the drilling platform has increased, and the distance from the center of the wellhead has become farther. When drilling, after the lower end of the drill pipe male buckle enters the drill pipe box, the angle between the lower end and the upper end of the drill string is 60°-70°. When the second-floor platform operators are operating, the inclination angle is large. The derrick workers pull the drill string into the finger beam from the wellhead direction, which is labor-intensive, inefficient, and has great safety risks.

[0003] According to statistics, personal injury incidents and attempted incidents caused by drill string slippage have been increasing in recent years. The occurrence of these incidents has to take into account the research and application of equipment technology. At present, when operators operate the drill pipe to pull into the finger beam on the second-floor platform, they cannot use their hands to achieve effective safety anti-slip support because their hands are pulling the drill bit into the finger beam. As the pulling time increases, the operator's strength increases, the remaining strength is insufficient, and the safety risk is extremely high. For this reason, the utility model provides a pneumatic rocker arm applied to a second-floor platform for drilling and repairing wells and a use method thereof. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a pneumatic rocker arm for a second-level drilling and repair platform and a method for using the same, which solves the problem that when an operator on the second-level platform operates the drill pipe to pull it into the finger beam, because both hands are used to pull the drill tool into the finger beam, and the operator cannot use both hands to achieve effective and safe anti-slip support. As the pulling time becomes longer, the operator's strength increases, and the remaining strength is insufficient, posing a great safety risk.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a pneumatic rocker arm for a second-layer drilling and repairing platform, comprising: a pneumatic rocker arm, and a pneumatic control system for controlling the movement of the pneumatic rocker arm;

[0006] The pneumatic rocker arm includes: a base and an upper cover. The upper cover is fixedly installed on the top of the base. A rack guiding groove is formed in the inner bottom of the base. A rack is slidably connected to the inner side of the rack guiding groove. A first mounting block and a second mounting block are slidably connected to the inner bottom of the base. The first mounting block and the second mounting block are symmetrically arranged with respect to the length direction of the rack. The sliding directions of the first mounting block and the second mounting block are both perpendicular to the length direction of the rack. A first rotating shaft is rotatably connected to the first mounting block through a bearing. The top end of the first rotating shaft is rotatably connected to a first sliding member through a bearing. A first gear is fixedly connected to the first rotating shaft. A first rocker arm is fixedly connected to the side surface of the first gear. The top of the second mounting block is rotatably connected to a second rotating shaft through a bearing. The top end of the second rotating shaft is rotatably connected to a second sliding member through a bearing. A second gear is fixedly connected to the second rotating shaft. A second rocker arm is fixedly connected to the side surface of the second gear. A second cylinder mounting bracket is fixedly connected to the top of the rack guiding groove. A second cylinder is fixedly connected to the top of the second cylinder mounting bracket. The second cylinder is a single-piston double-acting cylinder. The two telescopic ends of the second cylinder are respectively fixedly connected to the first sliding member and the second sliding member;

[0007] A first cylinder is fixedly installed on the inner bottom of the base. The first cylinder is a double-acting cylinder. The telescopic end of the first cylinder is fixedly connected to the rack;

[0008] A pneumatic locking structure is fixedly installed on the inner bottom of the base. The pneumatic locking structure is used to lock the movement of the rack or the telescopic rod of the first cylinder;

[0009] The pneumatic locking structure includes: a third cylinder. The third cylinder is a single-acting cylinder. A rolling bearing is fixedly connected to one end of the clear rod of the cylinder piston of the third cylinder close to the first cylinder. A spring is sleeved on the clear rod of the cylinder piston between the rolling bearing and the housing of the third cylinder. The end of the clear rod of the cylinder piston of the third cylinder away from the first cylinder corresponds to the triggering part of the relay. A clamping groove corresponding to the rolling bearing is formed on the side surface of the first cylinder;

[0010] The pneumatic control system includes a main air path. The air outlet end of the main air path is connected to a first air path, a second air path, a third air path, and a fourth air path and a fifth air path controlled by a directional valve for switching. The first air path is used to supply air to the first cylinder to make the telescopic rod of the first cylinder extend. A first foot-operated air switch is installed on the first air path. The second air path is used to supply air to the first cylinder to make the telescopic rod of the first cylinder retract. A relay is installed on the second air path. The relay is fixedly connected to the base. The third air path is used to supply air to the third cylinder. The fourth air path and the fifth air path respectively supply air to both ends of the second cylinder;

[0011] One-way air release valves are provided on the first air passage, the second air passage, the third air passage, the fourth air passage, and the fifth air passage;

[0012] The pneumatic rocker arm is fixedly installed at the bottom of the second floor platform, so that the first rocker arm and the second rocker arm correspond to the finger beams of the second floor platform, and the first foot-operated air switch and the second foot-operated air switch are fixedly installed on the tabletop of the second floor platform.

[0013] Preferably, the top of the upper cover is provided with a first sliding hole and a second sliding hole, the first sliding member is slidably connected to the first sliding hole, and the second sliding member is slidably connected to the second sliding hole.

[0014] Preferably, a locking notch is provided on the side of the telescopic rod of the first cylinder, and the locking notch corresponds to the rolling bearing.

[0015] Preferably, a pressure regulating valve is installed on the main air passage.

[0016] Preferably, tooth portions are provided on both sides of the rack and are respectively engaged with the first gear and the second gear.

[0017] Preferably, the working ranges of the first rocker arm and the second rocker arm are within a 90° area for swinging.

[0018] Preferably, the sides of the first rocker arm and the second rocker arm close to the rack are set to be concave arcs.

[0019] A method for using a pneumatic rocker arm of a drill and workover second floor platform, using the pneumatic rocker arm of the drill and workover second floor platform as described above, includes the following steps:

[0020] S1. Control the reversing valve in advance to make the second cylinder act, drive the first sliding member and the second sliding member to slide synchronously, and make one of the first gear and the second gear engage with the rack;

[0021] SS2. When operating the drill pipe to pull it into the finger beam on the second floor platform, the operator steps on the first foot-operated air switch to make the telescopic rod of the first cylinder extend, push the rack to slide linearly, and synchronously drive the first gear or the second gear engaged with the rack to rotate, so that the first rocker arm or the second rocker arm rotates outwards to form a 90° angle with the rack. At this time, the piston rod of the third cylinder moves forward under the action of the spring, so that the rolling bearing catches the rack or the telescopic rod of the first cylinder;

[0022] S3. The operator steps on the second foot-operated air switch, enabling the third air path to supply air. The piston rod of the No. 3 cylinder pulls back the piston rod of the cylinder, and the rolling bearing loses its locking effect on the rack or the telescopic rod of the No. 1 cylinder. Moreover, the tail of the piston rod of the cylinder piston presses the relay valve, enabling the second air path to supply air, causing the telescopic rod of the No. 1 cylinder to retract, driving the rack to slide linearly, synchronously driving the first gear or the second gear meshing with the rack to rotate, causing the first rocker arm or the second rocker arm to rotate outwards and making it parallel to the rack.

[0023] The utility model provides a pneumatic rocker arm for the second floor platform of drilling and workover, which has the following beneficial effects:

[0024] 1. In the utility model, by designing the pneumatic rocker arm and the pneumatic control system, when pulling the drill pipe into the finger board on the second floor platform, the user steps on the first foot-operated air switch, causing the rocker arm (referring to the first rocker arm or the second rocker arm) to rotate outwards, thereby restricting the outward sliding of the drill string. This method can avoid personal injury incidents caused by the slippage of the drill string during the operation. When pulling the drill pipe into the finger board, the user can step on the second foot-operated air switch, causing the rocker arm to rotate inwards. This process can assist in pushing the drill pipe into the finger board, making it more labor-saving and safer for the user.

[0025] 2. In the utility model, by optimizing the pneumatic control system, a relay valve is arranged on the second air path, corresponding to the rolling bearing driven by the piston rod of the piston of the No. 3 cylinder. The user controls the third air path to be connected through the second foot-operated air switch. After the piston rod of the cylinder returns to its position, it directly pushes the piston of the relay valve, enabling the second air path to conduct, thereby driving the No. 1 cylinder to act. The above control operation is relatively simple, and at the same time, the locking structure can be retained, making it have the advantages of convenient operation and safe use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the use position of a pneumatic rocker arm for the second floor platform of drilling and workover proposed by the utility model;

[0027] Figure 2 It is a three-dimensional view of a pneumatic rocker arm for the second floor platform of drilling and workover proposed by the utility model;

[0028] Figure 3 It is a schematic diagram of the principle of a pneumatic rocker arm for the second floor platform of drilling and workover proposed by the utility model;

[0029] Figure 4 is Figure 3 The partial enlarged view at A in

[0030] Among them, 1. Second-story platform; 2. Drill pipe; 3. Pneumatic swing arm; 301. Upper cover; 302. Base; 303. Rack guide groove; 304. No. 2 cylinder mounting bracket; 305. No. 2 cylinder; 306. First sliding hole; 307. First sliding part; 308. Second sliding part; 309. First gear; 310. First swing arm; 311. Second gear; 312. Second swing arm; 313. Pneumatic locking structure; 3131. Rolling bearing; 3132. No. 3 cylinder; 3133. Cylinder piston open rod; 3134. Spring; 314. No. 1 cylinder; 315. Second sliding hole; 316. Rack; 4. Main air passage; 5. First air passage; 6. Second air passage; 7. Relay; 8. Third air passage; 9. First foot-operated air switch; 10. Second foot-operated air switch; 11. Fourth air passage; 12. Fifth air passage; 13. Directional valve; 14. Wellhead. Specific embodiments

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] Embodiment 1:

[0033] As Figures 1 - 4 shown, the embodiment of the present invention provides a pneumatic swing arm for a drill and workover second-story platform, including: a pneumatic swing arm 3 and a pneumatic control system for controlling the movement of the pneumatic swing arm 3. The pneumatic control system is relied on to control the movement of the pneumatic swing arm 3, which is used to limit the outward inclination of the drill pipe 2 when operating the drill pipe to pull it into the finger beam on the second-story platform, and at the same time assist the operator to pull the drill pipe into the finger beam when in use.

[0034] Specifically, the pneumatic rocker arm 3 includes: a base 302 and an upper cover 301. The upper cover 301 is fixedly installed on the top of the base 302. A rack guide groove 303 is formed in the inner bottom of the base 302. The rack guide groove 303 is located at the symmetry line position of the base 302. A rack 316 is slidably connected to the inner side of the rack guide groove 303. Relying on the rack guide groove 303, it can ensure that the rack 316 can slide smoothly. A first mounting block and a second mounting block are slidably connected to the inner bottom of the base 302. The first mounting block and the second mounting block are symmetrically arranged with respect to the length direction of the rack 316. The sliding directions of the first mounting block and the second mounting block are both perpendicular to the length direction of the rack 316, that is, the connection line of the positions where the first mounting block and the second mounting block are located is perpendicular to the rack 316, and the first mounting block and the second mounting block slide along the connection line direction of the positions where they are located. A first rotating shaft is rotatably connected to the first mounting block through a bearing. The top end of the first rotating shaft is rotatably connected to a first sliding member 307 through a bearing. A first gear 309 is fixedly connected to the first rotating shaft. The first gear 309 cooperates with the rack 316. A first rocker arm 310 is fixedly connected to the side surface of the first gear 309. When the rack 316 makes a linear motion, it can drive the first gear 309 to make a rotational motion, causing the first rocker arm 310 to rotate. A second rotating shaft is rotatably connected to the top of the second mounting block through a bearing. The top end of the second rotating shaft is rotatably connected to a second sliding member 308 through a bearing. A second gear 311 is fixedly connected to the second rotating shaft. A second rocker arm 312 is fixedly connected to the side surface of the second gear 311. A second cylinder mounting bracket 304 is fixedly connected to the top of the rack guide groove 303. A second cylinder 305 is fixedly connected to the top of the second cylinder mounting bracket 304. The second cylinder 305 is a single-piston double-acting cylinder. The two telescopic ends of the second cylinder 305 are respectively fixedly connected to the first sliding member 307 and the second sliding member 308.

[0035] Tooth portions are provided on both sides of the rack 316 and respectively cooperate with the first gear 309 and the second gear 311.

[0036] By supplying air to the second cylinder 305, its telescopic end moves, thereby controlling the synchronous sliding of the first sliding member 307 and the second sliding member 308, so that one of the first gear 309 and the second gear 311 meshes with the rack 316 for transmission.

[0037] A first cylinder 314 is fixedly installed on the inner bottom of the base 302. The first cylinder 314 is a double-acting cylinder. The telescopic end of the first cylinder 314 is fixedly connected to the rack 316. By supplying air to the first cylinder 314, the rack 316 can be pushed to slide linearly.

[0038] An air-operated locking structure 313 is fixedly installed on the inner bottom of the base 302. The air-operated locking structure 313 is used to lock the movement of the rack or the telescopic rod of the first cylinder 314. When the first rocker arm 310 or the second rocker arm 312 rotates outward by 90°, the air-operated locking structure 313 can lock the rack or the telescopic rod of the first cylinder 314, thereby restricting the rotation of the first gear 309 and the second gear 311, and can keep the position of the first rocker arm 310 or the second rocker arm 312 unchanged, so as to well restrict the drill pipe from tilting outward.

[0039] The air-operated locking structure 313 includes: a third cylinder 3132. The third cylinder 3132 is a single-acting cylinder. One end of the exposed rod 3133 of the cylinder piston of the third cylinder 3132 close to the first cylinder 314 is fixedly connected with a rolling bearing 3131. A spring 3134 is sleeved on the exposed rod 3133 of the cylinder piston and between the rolling bearing 3131 and the housing of the third cylinder 3132. The end of the exposed rod 3133 of the cylinder piston of the third cylinder 3132 far from the first cylinder 314 corresponds to the trigger of the relay valve 7. A card slot corresponding to the rolling bearing 3131 is opened on the side of the first cylinder 314.

[0040] The retraction of the rolling bearing 3131 is controlled by the pushing action of the exposed rod 3133 of the cylinder piston of the third cylinder 3132. Depending on the elastic force of the spring 3134, at an appropriate position, the rolling bearing 3131 can be stuck to the rack or the telescopic rod of the first cylinder 314.

[0041] In one way, a locking notch is opened on the side of the telescopic rod of the first cylinder 314. The rolling bearing 3131 corresponds to the locking notch, and the telescopic rod of the first cylinder 314 is fixed by inserting the rolling bearing 3131 into the locking notch.

[0042] In another way, the length of the rack 316 is reasonably set, and the rolling bearing 3131 is inserted into the first tooth space on the side of the rack 316, so as to fix the position of the rack 316.

[0043] The air pressure control system includes a main air passage 4. A pressure regulating valve is installed on the main air passage 4 to regulate the air pressure of the main air supply in the air pressure control system and ensure the stability of the air pressure. The outlet end of the main air passage 4 is connected to a first air passage 5, a second air passage 6, a third air passage 8, a fourth air passage 11 and a fifth air passage 12 controlled by switching of the reversing valve 13.

[0044] One-way air release valves are provided on the first air passage 5, the second air passage 6, the third air passage 8, the fourth air passage 11 and the fifth air passage 12. When the air pressure in each air passage is too high, the air pressure in the air passage can be released.

[0045] The first air passage 5 is used to supply air to the first cylinder 314, causing the telescopic rod of the first cylinder 314 to extend. A first foot-operated air switch 9 is installed on the first air passage 5. The second air passage 6 is used to supply air to the first cylinder 314, causing the telescopic rod of the first cylinder 314 to retract. A relay 7 is installed on the second air passage 6, and the relay 7 is fixedly connected to the base 302. The third air passage 8 is used to supply air to the third cylinder 3132. The fourth air passage 11 and the fifth air passage 12 supply air to both ends of the second cylinder 305 respectively.

[0046] The pneumatic rocker arm 3 is fixedly installed at the bottom of the second deck 1, so that the first rocker arm 310 and the second rocker arm 312 correspond to the finger beams of the second deck 1. The first foot-operated air switch 9 and the second foot-operated air switch 10 are fixedly installed on the tabletop of the second deck 1, facilitating the operation of the pneumatic rocker arm 3 by the operators on the second deck 1.

[0047] Before use, select to use the first rocker arm 310 or the second rocker arm 312 according to the position of the drill pipe 2 placed on the second deck. For example, when the second rocker arm 312 needs to be used, the second sliding member 308 at the position of the second rocker arm 312 can be controlled to move towards the rack 316, so that the second gear 311 meshes with the rack 316, and at the same time the first gear 309 will be separated from the rack 316.

[0048] A first sliding hole 306 and a second sliding hole 315 are opened at the top of the upper cover 301. The first sliding member 307 is slidably connected to the first sliding hole 306, and the second sliding member 308 is slidably connected to the second sliding hole 315.

[0049] The first sliding hole 306 and the second sliding hole 315 are used to further restrict the sliding of the first sliding member 307 and the second sliding member 308, enabling the first sliding member 307 and the second sliding member 308 to slide smoothly.

[0050] The working range of the first rocker arm 310 and the second rocker arm 312 is to swing within a 90° area. When not in use, the rocker arms remain parallel to the first cylinder 314. When in use, the rocker arms remain perpendicular to the first cylinder 314, and during use, the rocker arms rotate inward and finally become parallel to the first cylinder 314.

[0051] The sides of the first rocker arm 310 and the second rocker arm 312 close to the rack 316 are set as concave arcs, which can well hold the drill pipe 2.

[0052] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pneumatic rocker arm for a second-layer drilling and repairing platform, characterized in that: include: A pneumatic rocker arm (3), and a pneumatic pressure control system for controlling the movement of the pneumatic rocker arm (3); The pneumatic rocker arm (3) comprises: a base (302) and an upper cover (301), wherein the upper cover (301) is fixedly mounted on the top of the base (302), a rack guide groove (303) is provided at the inner bottom of the base (302), a rack (316) is slidably connected to the inner side of the rack guide groove (303), a first mounting block and a second mounting block are slidably connected to the inner bottom of the base (302), the first mounting block and the second mounting block are symmetrically arranged with respect to the length direction of the rack (316), the sliding directions of the first mounting block and the second mounting block are both perpendicular to the length direction of the rack (316), a first rotating shaft is rotatably connected to the first mounting block via a bearing, a first sliding member (307) is rotatably connected to the top end of the first rotating shaft via a bearing, and a first gear is fixedly connected to the first rotating shaft. The first gear (309) is fixedly connected to a first rocker arm (310) on the side of the first gear (309), the top of the second mounting block is rotatably connected to a second rotating shaft via a bearing, the top of the second rotating shaft is rotatably connected to a second sliding member (308) via a bearing, the second rotating shaft is fixedly connected to a second gear (311), the side of the second gear (311) is fixedly connected to a second rocker arm (312), the top of the rack guide groove (303) is fixedly connected to a No. 2 cylinder mounting frame (304), the top of the No. 2 cylinder mounting frame (304) is fixedly connected to a No. 2 cylinder (305), the No. 2 cylinder (305) is a single-piston double-acting cylinder, and the two telescopic ends of the No. 2 cylinder (305) are respectively fixedly connected to the first sliding member (307) and the second sliding member (308); A first cylinder (314) is fixedly mounted on the inner bottom of the base (302); the first cylinder (314) is a double-acting cylinder; the telescopic end of the first cylinder (314) is fixedly connected to a rack (316); A pneumatic locking structure (313) is fixedly mounted on the inner bottom of the base (302), and the pneumatic locking structure (313) is used to lock the movement of the telescopic rod of the rack or the first cylinder (314); The pneumatic locking structure (313) comprises: a No. 3 cylinder (3132), wherein the No. 3 cylinder (3132) is a single-acting cylinder, wherein one end of the cylinder piston rising rod (3133) of the No. 3 cylinder (3132) close to the No. 1 cylinder (314) is fixedly connected to a rolling bearing (3131), a spring (3134) is sleeved on the cylinder piston rising rod (3133) and located between the rolling bearing (3131) and the housing of the No. 3 cylinder (3132), and one end of the cylinder piston rising rod (3133) of the No. 3 cylinder (3132) away from the No. 1 cylinder (314) corresponds to the triggering position of the air relay (7), and a slot corresponding to the rolling bearing (3131) is provided on the side of the No. 1 cylinder (314); The air pressure control system comprises a main air circuit (4), the air outlet end of the main air circuit (4) is connected to a first air circuit (5), a second air circuit (6), a third air circuit (8), and a fourth air circuit (11) and a fifth air circuit (12) switched and controlled by a reversing valve (13), the first air circuit (5) being used to supply air to the first air cylinder (314) so ​​that the telescopic rod of the first air cylinder (314) is extended, the first air circuit (5) is provided with a first foot-operated air switch (9), the second air circuit (6) is used to supply air to the first air cylinder (314) so ​​that the telescopic rod of the first air cylinder (314) is retracted, the second air circuit (6) is provided with an air relay (7), the air relay (7) being fixedly connected to the base (302), the third air circuit (8) being used to supply air to the third air cylinder (3132), and the fourth air circuit (11) and the fifth air circuit (12) are respectively used to supply air to both ends of the second air cylinder (305); One-way air release valves are provided on the first air path (5), the second air path (6), the third air path (8), the fourth air path (11), and the fifth air path (12); The pneumatic rocker arm (3) is fixedly mounted on the bottom of the second-layer platform (1), so that the first rocker arm (310) and the second rocker arm (312) correspond to the finger beam of the second-layer platform (1), and the first foot-operated air switch (9) and the second foot-operated air switch (10) are fixedly mounted on the surface of the second-layer platform (1).

2. The pneumatic rocker arm for the second-level drilling and repairing platform according to claim 1 is characterized by: A first sliding hole (306) and a second sliding hole (315) are provided on the top of the upper cover (301); the first sliding member (307) is slidably connected to the first sliding hole (306); and the second sliding member (308) is slidably connected to the second sliding hole (315).

3. The pneumatic rocker arm for the second-level drilling and repairing platform according to claim 1 is characterized by: A locking notch is provided on the side of the telescopic rod of the No. 1 cylinder (314), and the locking notch corresponds to the rolling bearing (3131).

4. The pneumatic rocker arm for the second-level drilling and repairing platform according to claim 1 is characterized by: A pressure regulating valve is installed on the main gas circuit (4).

5. The pneumatic rocker arm for the second-level drilling and repairing platform according to claim 1 is characterized by: The rack (316) is provided with teeth on both sides, and respectively cooperates with the first gear (309) and the second gear (311).

6. The pneumatic rocker arm for the second-level drilling and repairing platform according to claim 1 is characterized by: The working range of the first rocker arm (310) and the second rocker arm (312) is a swing within a 90° area.

7. The pneumatic rocker arm for the second-level drilling and workover platform according to claim 1 is characterized by: A side of the first rocker arm (310) and the second rocker arm (312) close to the rack (316) is configured to be an inwardly concave arc shape.

Images