Equipment for disassembling and assembling large pins in oil drilling

Abstract

The present invention discloses a disassembly and assembly device for large-scale pins in oil drilling. The device comprises a cylinder, an outer cylinder connected to the bottom of the cylinder, an inner cylinder connected to the inner cylinder, a lead screw connected to the inner cylinder, a first transmission mechanism and a second transmission mechanism arranged sequentially 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 matching the first transmission mechanism and the second transmission mechanism, and the first transmission mechanism and the second transmission mechanism respectively matching and connected to a first hand-cranking device and a second hand-cranking device; the device also comprises a tray connected to the side wall of the outer cylinder, and the connection point between the tray and the outer cylinder is arranged near the bottom of the outer cylinder. The pin of the present invention is stably installed, reducing on-site labor intensity and the workload of pin installation. At the same time, the pin is prevented from slipping when hoisted with a rope, ensuring safe operation.

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 drilling rig are the main load-bearing parts. The connecting pins on them are generally large pins, especially those located at high positions. It is difficult to install or remove the pins manually. Currently, the pins are usually wrapped with ropes, lifted by a crane or forklift, and aligned with the pin holes. The pins are then hammered into or removed manually. This usually requires the cooperation of multiple people to complete the operation, which 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-scale pins in oil drilling, which solves the problem of time-consuming and labor-intensive manual disassembly and assembly of pins in existing oil drilling equipment.

[0004] The technical solution adopted by the present invention is a disassembly and assembly device for large-scale pin shafts in oil drilling, comprising 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 sequentially arranged 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 matching the first transmission mechanism and the second transmission mechanism, and the first transmission mechanism and the second transmission mechanism respectively matching and connected to a first hand-cranking device and a second hand-cranking device;

[0005] The utility model further 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 is matched with 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. The turbine is matched with the shift mechanism. The turbine is matched with a worm, and the worm is connected to 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 engaged with the external splines of the lead screw, and the external splines of the slip ring are respectively engaged with the internal splines of the turbine and the external splines of the spline shaft.

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

[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 and connected to the worm. The large gear is meshed with a small gear, which is connected to the second rotating shaft. The second rotating shaft is located at the end outside the gear box and is provided with a second connecting hole. The second connecting hole is connected to a hand crank, and the hand crank matches the first connecting hole.

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

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

[0015] The inner wall of the outer cylinder is provided with a keyway, and the outer wall of the inner cylinder is connected with a key. The key is arranged near 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 disassembling and assembling large pins in oil drilling. The pins are placed in a tray and the crank is manually turned to install the pins into the pin holes. When disassembling, the crank is manually turned to eject the pins and drop them into the tray, completing the disassembly and assembly of the pins. The entire operation process is time-saving and labor-saving. The pins are installed smoothly, reducing on-site labor intensity and the workload of pin installation. At the same time, the pins are prevented from slipping when hoisted with ropes, ensuring safe operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of the disassembly and assembly equipment for large-scale pins used in oil drilling according to the present invention;

[0019] Figure 2 A side view of the disassembly and assembly equipment for large-scale pins used in oil drilling according to the present invention;

[0020] Figure 3 This is a schematic diagram of the retracted state of the disassembly and assembly equipment for large-scale pins used in oil drilling according to the present invention;

[0021] Figure 4The figure is a schematic diagram of the installation state of the disassembly and assembly equipment of the present invention for large-scale 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. Gearbox; 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. 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 will be described in detail below with reference to the accompanying drawings and specific embodiments.

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

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

[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 by 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 disposed within the cylinder 1. The large bevel gear 2 is meshed with a small bevel gear 3, which is connected to a spline shaft 5. The spline shaft 5 is connected to the inner wall of the cylinder 1 via a first connecting plate 4. The spline shaft 5 is mated with a shift mechanism 6, and the large bevel gear 2 is connected to a first hand-cranked device. When the shift mechanism 6 is mated with the spline shaft 5, rotating the first hand-cranked device drives the large bevel gear 2 to rotate. The large bevel gear 2 drives the small bevel gear 5 to rotate, which in turn drives the spline shaft 5 to move, and then drives the screw 8 to rotate through the shift mechanism 6.

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

[0030] Example 2

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

[0032] Example 3

[0033] The first hand-cranked device includes 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. The end of the first rotating shaft 21 located outside the cylinder 1 is provided with a first connecting hole 22. Insert the hand crank 15 into the first connecting hole 22, and then rotate the hand crank 15 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 engages with the slip ring 62, and then drives the 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 can make the inner cylinder 18 retract quickly, such as 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 within the gearbox 12 and connected to the worm 11. The large gear 13 is meshed with a small gear 14, which is connected to a second rotating shaft 23. The end of the second rotating shaft 23 located outside the gearbox 12 is provided with a second connecting hole 24, and a hand crank 15 is engaged with the second connecting hole 24, which matches the first connecting hole 22. Turning the hand crank 15 drives the second rotating shaft 23 to rotate, which in turn drives the small gear 14 to rotate, which in turn drives the large gear 13 to rotate. The large gear 13 drives the turbine 10 to rotate via the worm 11, and the turbine 10 meshes with the slip ring 62, thereby driving the lead screw 8 to rotate via the slip ring 62.

[0036] Example 4

[0037] like Figure 4 As shown, the two ends of the tray 16 are respectively connected to the first connecting block 161 and the fixing block 162, the side wall of the outer cylinder 17 is connected to the second connecting block 171, and the second connecting block 171 matches the fixing block 162. The bottom of the inner cylinder 18 is connected to the head 181. To bear the weight of the pin, the first equipment fixing block 201 and the second equipment fixing block 202 are first welded to the equipment where the pin is to be installed. Then the pin is placed on the tray 16, and one end of the first connecting block 161 on the tray 16 is snapped 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 snapped into the second connecting block 171 on the side wall of the outer cylinder 17. The 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 to 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, playing 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. The head 181 is used to align the pin shaft. The shift mechanism 6 is in Figure 1 In the position shown, the outer spline of the slip ring 62 in the shift mechanism 6 is engaged with the inner spline of the turbine 10, and the inner spline of the slip ring 62 is engaged 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 engaged 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, move the shift lever 61 to put the shift mechanism 6 in the Figure 3 In the position shown, the internal splines of the slip ring 62 are engaged with the external splines of the spline shaft 5 and disengaged from the internal splines of the turbine 10. Then, the hand crank 15 is installed on the first rotating shaft 22. The hand crank 15 is rotated 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 engaged 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 pin from the equipment, for a double-taper pin, install the first connecting block 161 on the tray 16 onto the first equipment fixing block 201, connect the second connecting block 171 to the second equipment fixing block 202, and use the inner cylinder 18 to push the pin out of the pin hole, allowing the pin to fall onto the tray 16. For a single-taper pin, install the second connecting block 171 onto the first equipment fixing block 201, push the pin in the opposite direction, and push it out of the pin hole and onto the tray 16.

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

Claims

1. Equipment for disassembling and assembling large pins in oil drilling, characterized by: The invention comprises a cylinder (1), wherein the bottom of the cylinder (1) is connected to an outer cylinder (17), the inner cylinder (18) is connected to the inner cylinder (17), the inner cylinder (18) is connected to a lead screw (8), a first transmission mechanism and a second transmission mechanism are sequentially arranged in the cylinder (1) from top to bottom, 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 with a first hand-cranking device and a second hand-cranking device respectively; The invention 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) being arranged in a cylinder (1), the large bevel gear (2) being meshedly connected with a small bevel gear (3), the small bevel gear (3) being connected with a spline shaft (5), the spline shaft (5) being connected to the inner wall of the cylinder (1) via a first connecting plate (4), the spline shaft (5) being matched with a shift mechanism (6), and the large bevel gear (2) being connected to a first hand-cranking 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 shift mechanism (6), the turbine (10) being matched with a worm (11), and the worm (11) being connected to a second hand-cranking 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) includes a shift lever (61), the shift lever (61) passes through the side wall of the cylinder (1), the rod body of the shift lever (61) is connected to a slip ring (62), the slip ring (62) is arranged in the cylinder (1), the internal spline of the slip ring (62) is engaged with the external spline of the lead screw (8), and the external spline of the slip ring (62) is engaged with the internal spline of the turbine (10) and the external spline of the spline shaft (5) respectively.

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 provided 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), the large gear (13) being arranged in a gear box (12), the large gear (13) being connected to a worm (11), the large gear (13) being meshed with a small gear (14), the small gear (14) being connected to a second rotating shaft (23), the end of the second rotating shaft (23) being located outside the gear box (12) being provided with a second connecting hole (24), the second connecting hole (24) being clamped with a hand crank (15), and the hand crank (15) being matched with 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 lug (19), a lifting hole (25) is provided in the middle of the lifting lug (19), and the lifting lug (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 cylinder (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 cylinder (18) is connected to a 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 near the top of the inner cylinder (18), and the key (9) matches the keyway.

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