Disassembling and assembling equipment for large pin shaft in petroleum drilling

Abstract

The invention discloses dismounting and mounting equipment for a large pin shaft in petroleum drilling. The dismounting and mounting equipment comprises a barrel, the bottom of the barrel is connected with an outer barrel, the outer barrel is internally connected with an inner barrel, the inner barrel is internally connected with a lead screw, a first transmission mechanism and a second transmission mechanism are sequentially arranged in the barrel from top to bottom, the side wall of the barrel is connected with a gear shifting mechanism, and the gear shifting mechanism is connected with the lead screw; the gear shifting mechanism is arranged between the first transmission mechanism and the second transmission mechanism, the gear shifting mechanism is matched with the first transmission mechanism and the second transmission mechanism, and the first transmission mechanism and the second transmission mechanism are connected with a first hand-cranking device and a second hand-cranking device respectively in a matched mode; the tray is connected with the side wall of the outer barrel, and the connecting point of the tray and the outer barrel is arranged close to the bottom of the outer barrel; the pin shaft is stably mounted, the field labor intensity is relieved, and the pin shaft mounting workload is reduced. And meanwhile, the pin shaft is prevented from slipping when a rope is used for hoisting, and the operation safety is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of petroleum engineering equipment, and in particular relates to disassembly and assembly equipment for large and medium-sized pin shafts used in oil drilling. Background Art

[0002] The derrick and base of an oil rig are the main bearing parts, and the connecting pins on them are generally large pins, especially the connecting pins located at high positions. It is difficult to install or remove the pins by manpower. At present, the pins are usually wrapped with ropes, and the pins are lifted and aligned with the pin holes by cranes or forklifts. The pins are then hammered into or taken out of the pin holes by manpower, which generally requires the cooperation of multiple people to complete. The operation is time-consuming and labor-intensive. At the same time, when the pins are tied with ropes, they may slip, posing a risk of personal injury. Summary of the invention

[0003] The purpose of the present invention is to provide a disassembly and assembly device for large-sized pins in oil drilling, which solves the problem that manual disassembly and assembly of pins in existing oil drilling equipment is time-consuming and labor-intensive.

[0004] The technical solution adopted by the present invention is a disassembly and assembly device for large and medium-sized pin shafts in oil drilling, a cylinder, an outer cylinder connected to the bottom of the cylinder, an inner cylinder connected to the outer cylinder, a lead screw connected to the inner cylinder, a first transmission mechanism and a second transmission mechanism arranged in sequence from top to bottom in the cylinder, a shift mechanism connected to the side wall of the cylinder, the shift mechanism connected to the lead screw, the shift mechanism arranged between the first transmission mechanism and the second transmission mechanism, the shift mechanism matched with the first transmission mechanism and the second transmission mechanism, the first transmission mechanism and the second transmission mechanism respectively matched with a first hand-cranked device and a second hand-cranked device;

[0005] The utility model also comprises a tray, which is connected to the side wall of the outer cylinder, and the connection point between the tray and the outer cylinder is arranged close to the bottom of the outer cylinder.

[0006] The present invention is also characterized in that:

[0007] The first transmission mechanism includes a large bevel gear, which is arranged in the cylinder. The large bevel gear is meshed with a small bevel gear, and the small bevel gear is connected to a spline shaft. The spline shaft is connected to the inner wall of the cylinder through a first connecting plate. The spline shaft matches the shift mechanism, and the large bevel gear is connected to the first hand-cranked device.

[0008] The second transmission mechanism includes a turbine, which is connected to the inner wall of the cylinder through a second connecting plate, matched with the shift mechanism, matched with a worm, and connected with the second hand-cranked device.

[0009] The shift mechanism includes a shift lever, which passes through the side wall of the cylinder. The rod body of the shift lever is connected to a slip ring, which is arranged in the cylinder. The internal splines of the slip ring are meshed with the external splines of the lead screw, and the external splines of the slip ring are respectively meshed with the internal splines of the turbine and the external splines of the spline shaft.

[0010] The first hand-cranked device comprises a first rotating shaft, which passes through the side wall of the cylinder, an end of the first rotating shaft extending into the cylinder is connected to the large bevel gear, and a first connecting hole is formed at the end of the first rotating shaft outside the cylinder.

[0011] The second hand-cranked device includes a gear box, which is connected to the side wall of the cylinder. One end of the worm extends into the gear box. A gear assembly is provided in the gear box. The end of the worm extending into the gear box is connected to the gear assembly. The gear assembly is connected to a second rotating shaft, and the second rotating shaft passes through the side wall of the gear box.

[0012] The gear assembly includes a large gear, which is arranged in the gear box, connected to the worm, meshed with a small gear, connected to the second rotating shaft, and a second connecting hole is provided at the end of the second rotating shaft outside the gear box, a hand crank is connected to the second connecting hole, and the hand crank matches the first connecting hole.

[0013] The side wall of the cylinder is connected with a lifting ear, a lifting hole is opened in the middle of the lifting ear, and the lifting ear is arranged close to the top of the cylinder.

[0014] The two ends of the tray are respectively connected with a first connection block and a fixed block, the side wall of the outer tube is connected with a second connection block, the second connection block matches the fixed block, and the bottom of the inner tube is connected with a top.

[0015] The inner wall of the outer cylinder is provided with a keyway, the outer wall of the inner cylinder is connected with a key, the key is arranged close to the top of the inner cylinder, and the key matches the keyway.

[0016] The beneficial effects of the present invention are:

[0017] The present invention is used for the disassembly and assembly equipment of large and medium-sized pins in oil drilling. The pins are placed in a tray, and the pins can be installed in the pin holes by manually rotating the crank. When disassembling, the pins can be pushed out and dropped into the tray by manually rotating the crank, and the disassembly and assembly of the pins are completed. The whole operation process is time-saving and labor-saving, the pins are installed smoothly, the on-site labor intensity is reduced, and the workload of the pin installation is reduced. At the same time, the pins are prevented from slipping when hoisting with ropes, ensuring safe operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the disassembly and assembly equipment of the large and medium-sized pin shaft used in oil drilling according to the present invention;

[0019] Figure 2 It is a side view of the disassembly and assembly equipment of the present invention for medium and large pins used in oil drilling;

[0020] Figure 3 It is a schematic diagram of the retracted state of the disassembly and assembly equipment of the large and medium-sized pin shaft used in oil drilling according to the present invention;

[0021] Figure 4The present invention is a schematic diagram of the installation state of the disassembly and assembly equipment of large and medium-sized pins used in oil drilling.

[0022] In the figure: 1. cylinder; 2. large bevel gear; 3. small bevel gear; 4. first connecting plate; 5. spline shaft; 6. shift mechanism; 61. shift lever; 62. slip ring; 7. second connecting plate; 8. screw; 9. key; 10. turbine; 11. worm; 12. gear box; 13. large gear; 14. small gear; 15. hand crank; 16. tray; 161. first connecting block; 162. fixed block; 17. outer cylinder; 171. second connecting block; 18. inner cylinder; 181. top head; 19. lifting ear; 201. first device fixing block; 202. second device fixing block; 21. first rotating shaft; 22. first connecting hole; 23. second rotating shaft; 24. second connecting hole; 25. lifting hole. DETAILED DESCRIPTION

[0023] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] The present invention is used for disassembly and assembly equipment of large and medium-sized pins in oil drilling, such as Figure 1 As shown, it includes a cylinder 1, an outer cylinder 17 is connected to the bottom of the cylinder 1, an inner cylinder 18 is connected to the outer cylinder 17, a lead screw 8 is connected to the inner cylinder 18, a first transmission mechanism and a second transmission mechanism are arranged in sequence from top to bottom in the cylinder 1, a shift mechanism 6 is connected to the side wall of the cylinder 1, the shift mechanism 6 is connected to the lead screw 8, the shift mechanism 6 is arranged between the first transmission mechanism and the second transmission mechanism, the shift mechanism 6 matches the first transmission mechanism and the second transmission mechanism, and the first transmission mechanism and the second transmission mechanism are matched and connected with a first hand-cranked device and a second hand-cranked device respectively; the outer cylinder 17, the inner cylinder 18 and the lead screw 8 are coaxially arranged, when the shift mechanism 6 is connected to the first transmission mechanism, the first hand-cranked device is rotated to drive the lead screw 8 to rotate, and then the inner cylinder 18 is contracted, when the shift mechanism 6 is connected to the second transmission mechanism, the second hand-cranked device is rotated to drive the lead screw 8 to rotate, and the inner cylinder 18 is pushed out axially from the outer cylinder 17.

[0025] It also includes a tray 16, which is connected to the side wall of the outer cylinder 17, and the connection point between the tray 16 and the outer cylinder 17 is arranged near the bottom of the outer cylinder 17. The pin is placed on the tray 16, and through the movement of the inner cylinder 18, it can be pushed into the pin hole of the device.

[0026] The side wall of the cylinder 1 is connected with a lifting lug 19, and a lifting hole 25 is provided in the middle of the lifting lug 19. The lifting lug 19 is arranged near the top of the cylinder 1. The entire device can be hoisted through the lifting lug 19 and the lifting hole 25.

[0027] Example 1

[0028] The first transmission mechanism includes a large bevel gear 2, which is arranged in the cylinder 1, and is meshedly connected with a small bevel gear 3, which is connected with a spline shaft 5, which is connected to the inner wall of the cylinder 1 through a first connecting plate 4, and the spline shaft 5 is matched with a shifting mechanism 6, and the large bevel gear 2 is connected with a first hand-cranked device. When the shifting mechanism 6 is matched with the spline shaft 5, the first hand-cranked device is rotated to drive the large bevel gear 2 to rotate, and the large bevel gear 2 drives the small bevel gear 5 to rotate, and then drives the spline shaft 5 to move, and then drives the lead screw 8 to rotate through the shifting mechanism 6.

[0029] The second transmission mechanism includes a turbine 10, which is connected to the inner wall of the cylinder 1 through a second connecting plate 7. The turbine 10 is matched with the shift mechanism 6. The turbine 10 is matched with a worm 11, and the worm 11 is connected to the second hand-cranked device. When the shift mechanism 6 is matched with the turbine 10, the second hand-cranked device is rotated to drive the worm 11 to rotate, and the worm drives the turbine 10 to rotate. The turbine 10 drives the lead screw 8 to rotate through the shift mechanism 6.

[0030] Example 2

[0031] like Figure 2 As shown, the shift mechanism 6 includes a shift lever 61, which passes through the side wall of the cylinder 1. The shaft of the shift lever 61 is connected with a slip ring 62, which is arranged in the cylinder 1. The internal splines of the slip ring 62 are meshed with the external splines of the lead screw 8, and the external splines of the slip ring 62 are respectively meshed with the internal splines of the turbine 10 and the external splines of the spline shaft 5. The slip ring 62 has internal splines and external splines. When the shift lever 61 is moved, the shift lever 61 drives the slip ring 62 to move up and down, and meshes with the spline shaft 5 or the turbine 10 respectively.

[0032] Example 3

[0033] The first hand crank device includes a first rotating shaft 21, which passes through the side wall of the cylinder 1. The end of the first rotating shaft 21 extending into the cylinder 1 is connected to the large bevel gear 2, and the end of the first rotating shaft 21 outside the cylinder 1 is provided with a first connecting hole 22. The hand crank 15 is inserted into the first connecting hole 22, and then the hand crank 15 is turned to drive the first rotating shaft 21 to rotate. The first rotating shaft 21 drives the large bevel gear 2 to rotate, and then drives the small bevel gear 3 to rotate. The small bevel gear 3 drives the spline shaft 5 to move, and the spline shaft 5 engages with the slip ring 62, and then drives the lead screw 8 to rotate through the slip ring 62. The large bevel gear 2 drives the small bevel gear 3 to rotate, which can play a role in speed increase, and the inner cylinder 18 can be quickly retracted. Figure 3 shown.

[0034] The second hand-cranked device includes a gear box 12, which is connected to the side wall of the cylinder 1. One end of the worm 11 extends into the gear box 12. A gear assembly is provided in the gear box 12. The end of the worm 11 extending into the gear box 12 is connected to the gear assembly. The gear assembly is connected to a second rotating shaft 23, which passes through the side wall of the gear box 12.

[0035] The gear assembly includes a large gear 13, which is disposed in the gear box 12, connected to the worm 11, meshed with a small gear 14, connected to the second shaft 23, and a second connecting hole 24 is provided at the end of the second shaft 23 outside the gear box 12, a hand crank 15 is clamped to the second connecting hole 24, and the hand crank 15 matches the first connecting hole 22. The hand crank 15 is rotated to drive the second shaft 23 to rotate, the second shaft 23 drives the small gear 14 to rotate, the small gear 14 drives the large gear 13 to rotate, the large gear 13 drives the turbine 10 to rotate through the worm 11, and the turbine 10 is meshed with the slip ring 62, thereby driving the lead screw 8 to rotate through the slip ring 62.

[0036] Example 4

[0037] like Figure 4 As shown, the first connection block 161 and the fixing block 162 are connected to both ends of the tray 16, the side wall of the outer cylinder 17 is connected to the second connection block 171, the second connection block 171 matches the fixing block 162, and the bottom of the inner cylinder 18 is connected to the top head 181. In order to bear the weight of the pin, firstly, the first equipment fixing block 201 and the second equipment fixing block 202 are welded on the equipment where the pin is to be installed, and then the pin is placed on the tray 16, and one end of the first connection block 161 on the tray 16 is inserted into the second equipment fixing block 202 to bear the weight of the pin. The fixing block 162 at the other end of the tray 16 is matched with the second connection block 171 on the side wall of the outer cylinder 17, and the top head 181 is used to align the pin. When the inner cylinder 18 extends from the outer cylinder 17, the pin is pushed into the pin hole of the equipment.

[0038] The inner wall of the outer cylinder 17 is provided with a keyway, and the outer wall of the inner cylinder 18 is connected with a key 9, which is arranged near the top of the inner cylinder 18 and matches the keyway. When the inner cylinder 18 moves axially along the outer cylinder 17, the key 9 slides along the keyway to play a positioning role.

[0039] The working principle of the disassembly and assembly equipment of the present invention for large-scale pins in oil drilling is as follows:

[0040] When the pin shaft needs to be installed, the pin shaft is placed on the tray 16, and one end of the first connecting block 161 on the tray 16 is inserted into the second device fixing block 202 to bear the weight of the pin shaft. The fixing block 162 at the other end of the tray 16 is engaged with the second connecting block 171 on the side wall of the outer cylinder 17, and the head 181 is used to align the pin shaft. The shift mechanism 6 is in Figure 1 When in the position shown, the outer spline of the slip ring 62 in the shift mechanism 6 is meshed with the inner spline of the turbine 10, and the inner spline of the slip ring 62 is meshed with the outer spline of the lead screw 8 and is disengaged from the spline shaft 5. The hand crank 15 is rotated to drive the second rotating shaft 23 to rotate, and the second rotating shaft 23 drives the small gear 14 to rotate, and the small gear 14 drives the large gear 13 to rotate. The large gear 13 drives the turbine 10 to rotate through the worm 11. The turbine 10 is meshed with the slip ring 62, thereby driving the lead screw 8 to rotate through the slip ring 62. When the lead screw 8 rotates, the inner cylinder 18 is pushed out along the axial direction of the outer cylinder 17, and then the pin shaft is pushed into the pin shaft hole of the equipment, thereby completing the installation of the pin shaft.

[0041] After the pin is installed, the shift lever 61 is moved to place the shift mechanism 6 in the Figure 3 In the position shown, the internal spline of the slip ring 62 is meshed with the external spline of the spline shaft 5 and disengaged from the internal spline of the turbine 10. Then the hand crank 15 is installed on the first rotating shaft 22. The hand crank 15 is turned to drive the first rotating shaft 21 to rotate. The first rotating shaft 21 drives the large bevel gear 2 to rotate, and then drives the small bevel gear 3 to rotate. The small bevel gear 3 drives the spline shaft 5 to move. The spline shaft 5 is meshed with the slip ring 62, and then drives the screw 8 to rotate through the slip ring 62, driving the inner cylinder 18 to retract.

[0042] When removing the pins on the equipment, for double taper pins, install the first connection block 161 on the tray 16 to the first equipment fixing block 201, connect the second connection block 171 to the second equipment fixing block 202, and use the inner cylinder 18 to push the pin out of the pin hole, so that the pin falls on the tray 16. For single taper pins, install the second connection block 171 on the first equipment fixing block 201, push the pin in the opposite direction, so that the pin is pushed out of the pin hole and falls on the tray 16.

[0043] The present invention is used for the disassembly and assembly equipment of large and medium-sized pins in oil drilling. When installing the pins, first connect the tray to the equipment, then connect the manual disassembly and assembly tool of the pins to the tray, then place the pins on the tray and align them with the pin holes, then manually turn the crank, and through the transmission of gears, turbine worms, etc., the rotation is converted into linear motion to push the pins forward. At the same time, due to the action of the gears and the turbine worm, the output torque is increased, and a larger thrust can be obtained when a smaller torque is manually applied, so that the pins are pushed into the pin holes. After the pins are installed, the manual assembly tool is switched to the retracted state, and the manual disassembly and assembly tool of the pins can be quickly retracted through the large and small bevel gears. When disassembling the pins, the tray can be installed on the side of the equipment where the pins are withdrawn, and the manual assembly tool of the pins is directly connected to the other side of the equipment. The crank is turned to push the pins out of the pin holes and drop them onto the tray.

Claims

1. Equipment for disassembling and assembling large and medium-sized pins in oil drilling, characterized in that: The invention comprises a cylinder (1), wherein the bottom of the cylinder (1) is connected to an outer cylinder (17), the inner part of the outer cylinder (17) is connected to an inner cylinder (18), the inner part of the inner cylinder (18) is connected to a lead screw (8), a first transmission mechanism and a second transmission mechanism are arranged in sequence from top to bottom in the cylinder (1), a shift mechanism (6) is connected to the side wall of the cylinder (1), the shift mechanism (6) is connected to the lead screw (8), the shift mechanism (6) is arranged between the first transmission mechanism and the second transmission mechanism, the shift mechanism (6) matches the first transmission mechanism and the second transmission mechanism, and the first transmission mechanism and the second transmission mechanism are matched and connected to a first hand-cranked device and a second hand-cranked device respectively; It also comprises a tray (16), wherein the tray (16) is connected to the side wall of the outer cylinder (17), and the connection point between the tray (16) and the outer cylinder (17) is arranged close to the bottom of the outer cylinder (17).

2. The disassembly and assembly equipment for large and medium-sized pins used in oil drilling according to claim 1, characterized in that: The first transmission mechanism comprises a large bevel gear (2), the large bevel gear (2) is arranged in the cylinder (1), the large bevel gear (2) is meshingly connected with a small bevel gear (3), the small bevel gear (3) is connected with a spline shaft (5), the spline shaft (5) is connected to the inner wall of the cylinder (1) through a first connecting plate (4), the spline shaft (5) is matched with a shifting mechanism (6), and the large bevel gear (2) is connected to a first hand-cranked device.

3. The disassembly and assembly equipment for large and medium-sized pins used in oil drilling according to claim 1, characterized in that: The second transmission mechanism comprises a turbine (10), the turbine (10) being connected to the inner wall of the cylinder (1) via a second connecting plate (7), the turbine (10) being matched with the shifting mechanism (6), the turbine (10) being matched with a worm (11), and the worm (11) being connected to a second hand-cranked device.

4. The disassembly and assembly equipment for large and medium-sized pins used in oil drilling according to claim 3, characterized in that: The shift mechanism (6) comprises a shift lever (61), the shift lever (61) passes through the side wall of the cylinder (1), the shaft of the shift lever (61) is connected to a slip ring (62), the slip ring (62) is arranged in the cylinder (1), the internal splines of the slip ring (62) are meshed with the external splines of the lead screw (8), and the external splines of the slip ring (62) are respectively meshed with the internal splines of the turbine (10) and the external splines of the spline shaft (5).

5. The disassembly and assembly equipment for large and medium-sized pins used in oil drilling according to claim 2, characterized in that: The first hand-cranked device comprises a first rotating shaft (21), the first rotating shaft (21) passes through the side wall of the cylinder (1), the end of the first rotating shaft (21) extending into the cylinder (1) is connected to the large bevel gear (2), and the end of the first rotating shaft (21) located outside the cylinder (1) is provided with a first connecting hole (22).

6. The disassembly and assembly equipment for large and medium-sized pins used in oil drilling according to claim 3, characterized in that: The second hand-cranked device comprises a gear box (12), the gear box (12) being connected to the side wall of the cylinder (1), one end of the worm (11) extending into the gear box (12), a gear assembly being arranged in the gear box (12), the end of the worm (11) extending into the gear box (12) being connected to the gear assembly, the gear assembly being connected to a second rotating shaft (23), and the second rotating shaft (23) passing through the side wall of the gear box (12).

7. The disassembly and assembly equipment for large and medium-sized pins used in oil drilling according to claim 6, characterized in that: The gear assembly comprises a large gear (13), wherein the large gear (13) is arranged in a gear box (12), the large gear (13) is connected to a worm (11), the large gear (13) is meshingly connected to a small gear (14), the small gear (14) is connected to a second rotating shaft (23), a second connecting hole (24) is provided at an end of the second rotating shaft (23) outside the gear box (12), a hand crank (15) is clamped to the second connecting hole (24), and the hand crank (15) matches the first connecting hole (22).

8. The disassembly and assembly equipment for large and medium-sized pins used in oil drilling according to claim 1, characterized in that: The side wall of the cylinder (1) is connected with a lifting ear (19), a lifting hole (25) is opened in the middle of the lifting ear (19), and the lifting ear (19) is arranged close to the top of the cylinder (1).

9. The disassembly and assembly equipment for large and medium-sized pins used in oil drilling according to claim 1, characterized in that: The two ends of the tray (16) are respectively connected to a first connecting block (161) and a fixing block (162); the side wall of the outer tube (17) is connected to a second connecting block (171), the second connecting block (171) matches the fixing block (162); and the bottom of the inner tube (18) is connected to a top head (181).

10. The disassembly and assembly equipment for large and medium-sized pins used in oil drilling according to claim 1, characterized in that: The inner wall of the outer cylinder (17) is provided with a keyway, and the outer wall of the inner cylinder (18) is connected with a key (9). The key (9) is arranged close to the top of the inner cylinder (18), and the key (9) matches the keyway.

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