Petroleum drilling direct drive winch

Abstract

The utility model relates to the technical field of petroleum drilling equipment, in particular to a petroleum drilling direct drive winch which comprises a winch frame, a roller coupling, a main motor and a roller shaft, the roller shaft is installed in the winch frame, one end of the roller coupling is coaxially and fixedly connected with an output shaft of the main motor, and the other end of the roller coupling is coaxially and fixedly connected with the roller shaft. Compared with the prior art, according to the technical scheme, it is guaranteed that the winch can still work normally when the main motor breaks down, it is guaranteed that winch equipment can still work normally under the emergency situation, and the working efficiency and safety of the direct-drive winch are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to petroleum drilling equipment technical field especially relates to a petroleum drilling direct drive winch. BACKGROUND

[0002] Direct drive winch has been widely used in petroleum drilling operation, in order to reduce cost and improve efficiency, the direct drive winch generally adopts the motor with lower speed, this kind of motor as the main motor of driving winch does not need to be equipped with reduction gearbox again, and the drum shaft can be directly driven to rotate through the motor. The reduction gearbox reserved interface on the direct drive winch is used for installing emergency system, since the direct drive winch cancels the reduction gearbox, therefore, the emergency motor cannot be configured at the reduction gearbox reserved interface. When the main motor of winch fails, the winch cannot work again, and if there is an emergency, it also cannot be handled in time, which affects the working efficiency and safety of the direct drive winch.

[0003] Therefore, it is necessary to provide a petroleum drilling direct drive winch to improve the working efficiency and safety of the direct drive winch. SUMMARY

[0004] The utility model discloses a kind of petroleum drilling direct drive winches to solve the problem that existing direct drive winch cannot configure emergency motor, leading to the working efficiency and safety of direct drive winch is lower, and now provide a kind of petroleum drilling direct drive winch.

[0005] The technical scheme of the utility model is:

[0006] A kind of petroleum drilling direct drive winch, including winch frame, drum coupling, main motor and drum shaft, drum shaft is installed in winch frame, drum coupling one end is fixedly connected with the output shaft of main motor coaxially, the other end of drum coupling is fixedly connected with drum shaft coaxially;

[0007] Further include emergency drive system, emergency drive system includes emergency motor, speed reducer, clutch, small sprocket and large sprocket, the output shaft of emergency motor is connected with the input end of speed reducer, the output shaft of speed reducer drives small sprocket to rotate through clutch, and large sprocket is fixedly connected with drum shaft coaxially.

[0008] Further, clutch includes clutch seat, driving gear disc and driven gear disc, clutch seat is sleeved on the output shaft of speed reducer and is fixedly connected with winch frame, clutch seat is rotatably connected with the output shaft of speed reducer by bearing;

[0009] The driving gear disc and the driven gear disc are sleeved on the output shaft of the main motor, the driving gear disc is located between the driven gear disc and the clutch seat, the driving gear disc is fixed in the circumferential direction with the output shaft of the speed reducer, the driving gear disc can move axially along the output shaft of the speed reducer, a piston is arranged between the driving gear disc and the clutch seat, the piston is rotatably connected with the driving gear disc through a bearing, an air inlet is formed in the clutch seat, and the piston moves axially and pushes the driving gear disc to move axially when air enters the air inlet, and the driving gear disc is engaged with the driven gear disc.

[0010] The driven gear disc is rotatably connected with the output shaft of the speed reducer through a bearing, and the driven gear disc is fixedly connected with the small sprocket.

[0011] Further, the small sprocket is provided with a bolt, the bolt penetrates through the small sprocket and the driven gear disc, and the small sprocket and the driven gear disc are relatively fixed.

[0012] Further, the piston is sleeved with a sealing ring outside, and the sealing ring is located between the piston and the clutch seat.

[0013] Further, a closed brake is installed on one end of the drum shaft opposite to the drum shaft coupling.

[0014] Further, the speed reducer is a planetary reducer box.

[0015] Further, the main motor and the emergency motor are connected with a control system, the control system controls the main motor and the emergency motor to realize interlocking, and the two cannot be started at the same time.

[0016] Further, the emergency motor is fixedly connected with the winch frame.

[0017] Further, a return spring is installed between the driving gear disc and the driven gear disc, and the return spring drives the driving gear disc and the driven gear disc to separate.

[0018] The utility model discloses a kind of petroleum drilling direct drive winches, winch normal work is using main motor to drive drum shaft rotation to realize direct drive drum, the feature of main motor is low speed big torque, can not pass through speed reducer directly drive drum shaft to realize drilling condition, emergency drive system can be used for automatic drilling, and the energy consumption is lower when automatic drilling, wherein emergency motor power is small, speed is high, with the big reduction ratio of speed reducer It can make the speed of small sprocket reduce and torque increase, so that large sprocket drives drum shaft to rotate, when main motor fails, emergency drive system can complete lifting drilling tool, lower well frame base and other operations, avoid the risk caused by not being able to handle emergency situation in time, compared with traditional technology, the technical scheme ensures that winch can still work when main motor fails, ensures that winch equipment can still operate normally under emergency situation, improve the work efficiency and safety of direct drive winch. ACCURACY OF DRAWINGS

[0019] Figure 1This is a front view of the winch of this utility model;

[0020] Figure 2 This is a top view of the winch of this utility model;

[0021] Figure 3 This is a reference diagram of the clutch structure of this utility model.

[0022] Reference numerals: 1. Emergency drive system; 2. Closed brake; 3. Winch frame; 4. Drum coupling; 5. Main motor; 6. Drum shaft; 11. Emergency motor; 12. Reducer; 13. Clutch; 14. Small sprocket; 15. Bolt; 16. Air inlet; 131. Piston; 132. Drive gear; 133. Driven gear; 134. Return spring; 135. Clutch seat; 61. Large sprocket. Detailed Implementation

[0023] To make the technical means, technical features, utility model purpose and technical effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations.

[0024] Example 1:

[0025] like Figure 1 and Figure 2 As shown, this embodiment provides a direct-drive winch for oil drilling, including a winch frame 3, a drum coupling 4, a main motor 5, and a drum shaft 6. The drum shaft 6 is installed inside the winch frame 3. One end of the drum coupling 4 is coaxially and fixedly connected to the output shaft of the main motor 5, and the other end of the drum coupling 4 is coaxially and fixedly connected to the drum shaft 6. It also includes an emergency drive system 1, which includes an emergency motor 11, a reducer 12, a clutch 13, a small sprocket 14, and a large sprocket 61. The output shaft of the emergency motor 11 is connected to the input end of the reducer 12. The output shaft of the reducer 12 drives the small sprocket 14 to rotate through the clutch 13. The large sprocket 61 is coaxially and fixedly connected to the drum shaft 6.

[0026] Preferred, such as Figure 3As shown, the clutch 13 includes a clutch seat 135, a driving gear disc 132 and a driven gear disc 133, the clutch seat 135 is sleeved on the output shaft of the speed reducer 12 and is screw-fixedly connected with the winch frame 3, the clutch seat 135 is rotationally connected with the output shaft of the speed reducer 12 through a bearing, the driving gear disc 132 and the driven gear disc 133 are both sleeved on the output shaft of the main motor 5, the driving gear disc 132 is located between the driven gear disc 133 and the clutch seat 135, the driving gear disc 132 is fixedly opposite to the output shaft of the speed reducer 12 in the circumferential direction, the driving gear disc 132 is axially movable along the output shaft of the speed reducer 12, and the specific mode is that an axial key groove is installed on the output shaft of the speed reducer 12, the driving gear disc 132 slides in the key groove, and the piston 131 is arranged between the driving gear disc 132 and the clutch seat 135 and rotationally connected with the driving gear disc 132, an air inlet 16 is formed in the clutch seat 135, when the air inlet 16 is connected with the air path, the piston 131 moves axially and pushes the driving gear disc 132 to move axially, the driving gear disc 132 is engaged with the driven gear disc 133, the driven gear disc 133 is rotationally connected with the output shaft of the speed reducer 12 through a bearing, and the driven gear disc 133 is fixedly connected with the small sprocket 14.

[0027] As shown in the figure, the clutch 13 includes a clutch seat 135, a driving gear disc 132 and a driven gear disc 133, the clutch seat 135 is sleeved on the output shaft of the speed reducer 12 and is screw-fixedly connected with the winch frame 3, the clutch seat 135 is rotationally connected with the output shaft of the speed reducer 12 through a bearing, the driving gear disc 132 and the driven gear disc 133 are both sleeved on the output shaft of the main motor 5, the driving gear disc 132 is located between the driven gear disc 133 and the clutch seat 135, the driving gear disc 132 is fixedly opposite to the output shaft of the speed reducer 12 in the circumferential direction, the driving gear disc 132 is axially movable along the output shaft of the speed reducer 12, and the specific mode is that an axial key groove is installed on the output shaft of the speed reducer 12, the driving gear disc 132 slides in the key groove, and the piston 131 is arranged between the driving gear disc 132 and the clutch seat 135 and rotationally connected with the driving gear disc 132, an air inlet 16 is formed in the clutch seat 135, when the air inlet 16 is connected with the air path, the piston 131 moves axially and pushes the driving gear disc 132 to move axially, the driving gear disc 132 is engaged with the driven gear disc 133, the driven gear disc 133 is rotationally connected with the output shaft of the speed reducer 12 through a bearing, and the driven gear disc 133 is fixedly connected with the small sprocket 14. Figure 3 As shown, when the air inlet 16 is connected with the air path, the piston 131 pushes the driving gear disc 132 until the driving gear disc 132 is pressed against the driven gear disc 133 and the end teeth of the two gear discs are engaged, the clutch 13 is engaged to transmit power through the driven gear disc 133, drive the small sprocket 14 to rotate, after the air inlet 16 is cut off, the driving gear disc 132 is separated from the driven gear disc 133 under the action of the return spring 134, the end teeth are disengaged, and the clutch 13 is disengaged.

[0028] As shown in the figure, the clutch 13 includes a clutch seat 135, a driving gear disc 132 and a driven gear disc 133, the clutch seat 135 is sleeved on the output shaft of the speed reducer 12 and is screw-fixedly connected with the winch frame 3, the clutch seat 135 is rotationally connected with the output shaft of the speed reducer 12 through a bearing, the driving gear disc 132 and the driven gear disc 133 are both sleeved on the output shaft of the main motor 5, the driving gear disc 132 is located between the driven gear disc 133 and the clutch seat 135, the driving gear disc 132 is fixedly opposite to the output shaft of the speed reducer 12 in the circumferential direction, the driving gear disc 132 is axially movable along the output shaft of the speed reducer 12, and the specific mode is that an axial key groove is installed on the output shaft of the speed reducer 12, the driving gear disc 132 slides in the key groove, and the piston 131 is arranged between the driving gear disc 132 and the clutch seat 135 and rotationally connected with the driving gear disc 132, an air inlet 16 is formed in the clutch seat 135, when the air inlet 16 is connected with the air path, the piston 131 moves axially and pushes the driving gear disc 132 to move axially, the driving gear disc 132 is engaged with the driven gear disc 133, the driven gear disc 133 is rotationally connected with the output shaft of the speed reducer 12 through a bearing, and the driven gear disc 133 is fixedly connected with the small sprocket 14. Figure 3 As shown, the small sprocket 14 is provided with a bolt 15, the bolt 15 penetrates the small sprocket 14 and the driven gear disc 133 and relatively fixes the small sprocket 14 and the driven gear disc 133, so that the small sprocket 14 and the driven gear disc 133 can synchronously rotate, preferably, a sealing ring is sleeved and installed outside the piston 131, the sealing ring is located between the piston 131 and the clutch seat 135 and is used for sealing, when the air inlet 16 is filled with air, the sealing ring can play a sealing role and prevent the gas from leaking out of the gap between the piston 131 and the clutch seat 135.

[0029] As shown in the figure, the clutch 13 includes a clutch seat 135, a driving gear disc 132 and a driven gear disc 133, the clutch seat 135 is sleeved on the output shaft of the speed reducer 12 and is screw-fixedly connected with the winch frame 3, the clutch seat 135 is rotationally connected with the output shaft of the speed reducer 12 through a bearing, the driving gear disc 132 and the driven gear disc 133 are both sleeved on the output shaft of the main motor 5, the driving gear disc 132 is located between the driven gear disc 133 and the clutch seat 135, the driving gear disc 132 is fixedly opposite to the output shaft of the speed reducer 12 in the circumferential direction, the driving gear disc 132 is axially movable along the output shaft of the speed reducer 12, and the specific mode is that an axial key groove is installed on the output shaft of the speed reducer 12, the driving gear disc 132 slides in the key groove, and the piston 131 is arranged between the driving gear disc 132 and the clutch seat 135 and rotationally connected with the driving gear disc 132, an air inlet 16 is formed in the clutch seat 135, when the air inlet 16 is connected with the air path, the piston 131 moves axially and pushes the driving gear disc 132 to move axially, the driving gear disc 132 is engaged with the driven gear disc 133, the driven gear disc 133 is rotationally connected with the output shaft of the speed reducer 12 through a bearing, and the driven gear disc 133 is fixedly connected with the small sprocket 14. Figure 1 As shown, the drum shaft 6 is provided with a closed brake 2 at the end opposite to the drum shaft coupling 4, preferably, the speed reducer 12 is a planetary reducer box, and the planetary reducer box adopts a large reduction ratio to meet the transmission requirement.

[0030] Preferably, the main motor 5 is connected with the emergency motor 11 with a control system, the control system controls the main motor 5 and the emergency motor 11 to realize interlocking, and the two will not start at the same time, when the main motor 5 works, the clutch 13 is disengaged, and the main motor will not drive the emergency motor 11 through the chain, when the emergency motor 11 works, the clutch 13 is engaged, and the main motor 5 is driven to emit a small amount of electricity due to the very slow speed, which will not affect the main motor 5.

[0031] Preferably, the emergency motor 11 is screw-fixedly connected with the winch frame 3, and the emergency motor 11 adopts a motor with small power and high speed.

[0032] Preferably, a reset spring 134 is installed between the driving gear disc 132 and the driven gear disc 133, the reset spring 134 drives the driving gear disc 132 and the driven gear disc 133 to separate, and the reset spring 134 can control the meshing and separation of the driving gear disc 132 and the driven gear disc 133, so as to switch the driving of the main motor 5 or the driving of the emergency motor 11.

[0033] In use, the winch normally works by driving the drum shaft 6 to rotate through the main motor 5, so as to realize direct driving of the drum, the main motor 5 has the characteristics of low speed and large torque, and can directly drive the drum shaft 6 to realize the drilling working condition without a reduction box, the winch parking brake is realized by the closed brake 2, and the working brake is the energy consumption brake of the main motor 5. The closed brake 2 is a brake always closed, that is, a brake with air brake, when enough air pressure is applied to the air cylinder of the closed brake 2 to separate the dynamic and static friction discs, the brake is released, the emergency driving system 1 can be used for automatic drilling, and the energy consumption is lower during automatic drilling, wherein the emergency motor 11 has small power and high speed, and cooperates with the large reduction ratio of the speed reducer 12 to reduce the speed of the small chain wheel 14 and increase the torque, so as to rotate the drum shaft 6 driven by the large chain wheel 61, when the main motor 5 fails, the emergency driving system 1 can complete the operation of lifting the drilling tool and lowering the derrick base, and avoids the risk caused by the failure to handle the emergency situation in time. Compared with the traditional technology, the technical scheme ensures that the winch can still work normally when the main motor 5 fails, ensures that the winch equipment can still work normally in an emergency, and improves the working efficiency and safety of the direct drive winch.

[0034] The above only describes the preferred embodiments of the utility model, and is not used to limit the implementation range of the utility model. Any equivalent changes and modifications made according to the content of the utility model patent application scope shall belong to the technical scope of the utility model.

Claims

1. A direct-drive winch for oil drilling, comprising a winch frame (3), a drum coupling (4), a main motor (5), and a drum shaft (6), wherein the drum shaft (6) is installed inside the winch frame (3), characterized in that: One end of the roller coupling (4) is coaxially and fixedly connected to the output shaft of the main motor (5), and the other end of the roller coupling (4) is coaxially and fixedly connected to the roller shaft (6). It also includes an emergency drive system (1), which includes an emergency motor (11), a reducer (12), a clutch (13), a small sprocket (14) and a large sprocket (61). The output shaft of the emergency motor (11) is connected to the input end of the reducer (12). The output shaft of the reducer (12) drives the small sprocket (14) to rotate through the clutch (13). The large sprocket (61) is coaxially and fixedly connected to the roller shaft (6).

2. The direct-drive winch for oil drilling according to claim 1, characterized in that: The clutch (13) includes a clutch seat (135), a drive gear plate (132) and a driven gear plate (133). The clutch seat (135) is sleeved on the output shaft of the reducer (12) and fixedly connected to the winch frame (3). The clutch seat (135) and the output shaft of the reducer (12) are rotatably connected through bearings. Both the drive gear plate (132) and the driven gear plate (133) are mounted on the output shaft of the main motor (5). The drive gear plate (132) is located between the driven gear plate (133) and the clutch seat (135). The drive gear plate (132) and the output shaft of the reducer (12) are relatively fixed in the circumferential direction. The drive gear plate (132) can move axially along the output shaft of the reducer (12). A piston (131) is provided between the drive gear plate (132) and the clutch seat (135). The piston (131) and the drive gear plate (132) are rotatably connected by a bearing. An air inlet (16) is provided on the clutch seat (135). When air enters through the air inlet (16), the piston (131) moves axially and pushes the drive gear plate (132) to move axially. The drive gear plate (132) meshes with the driven gear plate (133). The driven gear plate (133) is rotatably connected to the output shaft of the reducer (12) via a bearing, and the driven gear plate (133) is fixedly connected to the small sprocket (14).

3. The direct-drive winch for oil drilling according to claim 2, characterized in that: A bolt (15) is provided on the small sprocket (14). The bolt (15) passes through the small sprocket (14) and the driven gear plate (133) and fixes the small sprocket (14) and the driven gear plate (133) relative to each other.

4. The direct-drive winch for oil drilling according to claim 2, characterized in that: A sealing ring is fitted on the outside of the piston (131), and the sealing ring is located between the piston (131) and the clutch seat (135).

5. The direct-drive winch for oil drilling according to claim 1, characterized in that: A closed brake (2) is installed on the end of the roller shaft (6) opposite to the roller coupling (4).

6. The direct-drive winch for oil drilling according to claim 1, characterized in that: The reducer (12) is a planetary gearbox.

7. The direct-drive winch for oil drilling according to claim 1, characterized in that: The main motor (5) and the emergency motor (11) are connected to a control system. The control system controls the main motor (5) and the emergency motor (11) to achieve interlocking, so that the two will not start at the same time.

8. The direct-drive winch for oil drilling according to claim 1, characterized in that: The emergency motor (11) is fixedly connected to the winch frame (3).

9. The direct-drive winch for oil drilling according to claim 2, characterized in that: A return spring (134) is installed between the drive gear plate (132) and the driven gear plate (133). The return spring (134) causes the drive gear plate (132) to separate from the driven gear plate (133).

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