Automatic rotating traveling block hook suitable for ocean drilling and repairing operation

Abstract

The utility model provides an automatic rotating traveling block hook suitable for ocean drilling and repairing operation. The automatic rotating traveling block hook comprises a hook cylinder, a positioning gear sleeve, a hook rod, a main hook and an automatic rotating device. The positioning gear sleeve and the hook rod are linked through a key, the main hook is linked with the hook rod through a pin shaft, the automatic rotating device comprises a power motor, a motor seat, an input gear, a gear shaft, an input gear fixing block and an encoder, the output end of the power motor is connected with the input gear, the tail end of the input gear is connected with the input gear fixing block and the encoder, and the output end of the motor seat is connected with the gear shaft. The gear shaft is installed between the motor base and the plane of the hook cylinder and is in meshing transmission with the input gear and the positioning gear sleeve. The large hook locking mechanism has the beneficial effects that automatic rotation, positioning and locking of the large hook are achieved through driving of the power motor, gear transmission mechanisms are all arranged in a relatively closed space, the problems that an existing large hook locking mechanism cannot be opened due to corrosion, locking is not in place, and jamming is caused are solved, remote control is achieved, and manual operation is replaced.

Description

Technical Field

[0001] The invention relates to the technical field of oil drilling and repair machine equipment manufacturing, in particular to an automatic rotating traveling block hook suitable for offshore drilling and repair operations. Background Art

[0002] The traveling block hook is an important component of the oil drilling and repair rig. It is an important lifting equipment for lifting and lowering drill pipes, oil pipes and various drilling tools in drilling and repair operations. Due to site restrictions, offshore drilling and repair rigs need to frequently unload drill pipes from both sides of the derrick. This particularity requires the hook to be able to rotate to the side of the derrick to receive and release the drill pipe. The realization of the rotating function of the traveling block hook mainly depends on the braking device. The braking device of the traveling block hook on the market is mainly a cam plus a locking ring groove structure. The wellhead operator turns the handle to break the cam apart, and then pushes the hook to rotate to a certain position, releases the handle, and the cam is stuck in the locking ring groove to lock the hook. These operations are mainly completed manually, which is inconvenient, time-consuming and labor-intensive. In addition, due to the strong corrosiveness during the use of offshore platforms, the unlocking and locking are often not in place, cannot be opened, or even stuck. Summary of the invention

[0003] To solve the above problems, the purpose of the present invention is to provide a traveling block hook which can realize the automatic rotation function and control the rotation angle, can automatically lock after rotating into place, and can avoid rust and jamming during use.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: designing a traveling block hook with an automatic rotating device, realizing automatic rotation, positioning, and locking of the hook through remote control, and the automatic rotating device has a certain airtightness, which can slow down or avoid corrosion from the marine atmosphere.

[0005] The traveling carriage hook includes a hook cylinder, a positioning gear sleeve, a hook rod, a main hook, and an automatic rotating device; the positioning gear sleeve and the hook rod are installed in the hook cylinder, and the positioning gear sleeve and the hook rod are linked by a key; the main hook is connected to the tail end of the hook rod through a pin shaft and can be linked with the hook rod; the automatic rotating device is installed on the hook cylinder as a whole.

[0006] The automatic rotating device includes a power motor, a motor seat, an input gear, a gear shaft, an input gear fixing block, and an encoder; the power motor is installed on the motor seat, the motor output end is connected to the input gear, the input gear tail end is connected to the input gear fixing block, the gear shaft is installed between the motor seat and the hook cylinder plane, the encoder is installed on the outer side of the motor seat, and is driven to rotate by the output end of the input gear fixing block.

[0007] The middle part of the gear shaft is a tooth structure, and both ends are shafts. The shaft ends are provided with bearings. The middle tooth structure meshes with the teeth on the positioning gear sleeve for transmission.

[0008] The input gear fixing block has a hole at one end and a shaft at the other end. The hole end is fixed to the output shaft of the power motor by bolts to fix the input gear, and the shaft at the other end is inserted into the encoder to drive the encoder to rotate.

[0009] The motor seat is connected to the power motor on one side, connected to the encoder on the other side, and has another side for connecting to the hook cylinder; the mounting surfaces of the motor seat and the hook cylinder, the mounting surfaces of the power motor, and the mounting surfaces of the encoder are all designed with sealing devices, thus realizing a relatively sealed structure inside the motor seat.

[0010] The power motor may be an electric motor, a hydraulic motor or a pneumatic motor.

[0011] When the traveling block hook needs to rotate, the operating controller drives the power motor, the power motor drives the input gear, the input gear drives the gear shaft to rotate, the gear shaft drives the positioning gear sleeve to rotate, the gear sleeve is linked with the hook rod and the hook, so as to realize the rotation of the hook; at the same time, when the input gear rotates, it drives the encoder to rotate and feeds back the angle signal, and the rotation angle of the hook is adjusted according to the feedback signal of the encoder; after the hook rotates into place, the motor control valve can be operated to lock the motor at any position.

[0012] The beneficial effects of the present invention are as follows: the present invention provides a traveling block hook with an automatic rotation function, which is driven by a power motor and transmits torque through gears to drive the hook to rotate, and has an automatic locking function and a rotation angle adjustment function, and the gear transmission mechanism is in a relatively sealed space, which solves the problems of the existing hook locking mechanism being unable to be opened due to corrosion and rust, being unable to lock in place, and being stuck, and realizes remote control, replaces manual operation, and reduces labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0014] Figure 1 It is a front view of the traveling block hook.

[0015] Figure 2 It is a front view of the automatic rotating device.

[0016] Figure 1-2 1. Hook cylinder, 2. Automatic rotating device, 3. Positioning gear sleeve, 4. Key, 5. Hook rod, 6. Large hook, 7. Power motor, 8. Input gear, 9. Gear fixing block, 10. Encoder, 11. Bearing, 12. Motor seat, 13. Gear shaft DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the embodiments.

[0018] The traveling carriage hook comprises a hook cylinder (1), a positioning gear sleeve (3), a hook rod (5), a main hook (6), and an automatic rotating device (2); the positioning gear sleeve (3) and the hook rod (5) are installed in the hook cylinder (1), and the positioning gear sleeve (3) and the hook rod (5) are linked by a key (4); the main hook (6) is connected to the rear end of the hook rod (5) by a pin shaft, and can be linked with the hook rod (5); the automatic rotating device (2) is installed on the hook cylinder (1) as a whole.

[0019] The automatic rotating device (2) comprises a power motor (7), a motor seat (12), an input gear (8), a gear shaft (13), an input gear fixing block (9), and an encoder (10); the power motor (7) is installed on the motor seat (12), the output end of the power motor is connected to the input gear (8), the tail end of the input gear (8) is connected to the input gear fixing block (9), the gear shaft (13) is installed between the motor seat (12) and the plane of the hook cylinder (1), and the encoder (10) is installed on the outer side of the motor seat (12) and is driven to rotate by the output end of the input gear fixing block (9).

[0020] The gear shaft (13) has a tooth structure in the middle, shafts at both ends, and bearings (11) at the shaft ends. The tooth structure in the middle meshes with the teeth on the positioning gear sleeve (3) for transmission.

[0021] The input gear fixing block (9) has a hole at one end and a shaft at the other end. The hole end is fixed to the output shaft of the power motor (7) by bolts to fix the input gear (8). The other end of the shaft is inserted into the encoder (10) to drive the encoder to rotate.

[0022] The motor seat (12) has a power motor (7) installed on one side, an encoder (10) installed on the other side, and another side used to connect with the hook cylinder (1); the mounting surface of the motor seat and the hook cylinder, the mounting surface of the power motor, and the mounting surface of the encoder are all designed with sealing devices, thereby realizing a relatively sealed structure in the motor seat.

[0023] The power motor (7) is preferably an electric motor.

[0024] When the traveling block hook needs to rotate, the operating controller drives the power motor (7), and the power motor drives the input gear (8), the input gear (8) drives the gear shaft (13) to rotate, the gear shaft (13) drives the positioning gear sleeve (3) to rotate, and the gear sleeve (3) is linked with the hook rod (5) and the hook (6), so as to realize the rotation of the hook; at the same time, when the input gear (8) rotates, it drives the encoder (10) to rotate and feedback the angle signal, and the rotation angle of the hook is adjusted according to the feedback signal of the encoder; after the hook rotates to the right position, the motor control valve can be operated to lock the motor at any position.

[0025] The above description is only a preferred embodiment of the present invention. The above specific embodiments are not limitations of the present invention. Any modifications, changes or equivalent substitutions made by ordinary technicians in the field based on the above description, without departing from the spirit and scope of the present invention, shall fall within the protection scope of the present invention.

Claims

1. An automatic rotating traveling block hook suitable for offshore drilling and repair operations, characterized in that: It comprises a hook cylinder, a positioning gear sleeve, a hook rod, a main hook and an automatic rotating device; the positioning gear sleeve and the hook rod are installed in the hook cylinder, and the positioning gear sleeve and the hook rod are linked by a key; the main hook is connected to the tail end of the hook rod by a pin shaft and can be linked with the hook rod; the automatic rotating device is installed on the hook cylinder as a whole.

2. The automatic rotating traveling block hook suitable for offshore drilling and repair operations according to claim 1 is characterized by: The automatic rotation device comprises a positioning gear sleeve, a motor seat, an input gear, a gear shaft, an input gear fixing block, and an encoder; a power motor is installed on the motor seat, the motor output end is connected to the input gear, the input gear tail end is connected to the input gear fixing block, the gear shaft is installed between the motor seat and the hook cylinder plane, the encoder is installed on the outer side of the motor seat, and is driven to rotate by the output end of the input gear fixing block.

3. The automatic rotating traveling block hook suitable for offshore drilling and repairing operations according to claim 2 is characterized by: The gear shaft has a tooth structure in the middle and shafts at both ends. The shaft ends are provided with bearings. The tooth structure in the middle meshes with the teeth on the positioning gear sleeve for transmission.

4. The automatic rotating traveling block hook suitable for offshore drilling and repairing operations according to claim 2 is characterized by: The input gear fixing block has a hole at one end and a shaft at the other end. The hole end is fixed to the output shaft of the power motor by bolts to fix the input gear, and the shaft at the other end is inserted into the encoder to drive the encoder to rotate.

5. The automatic rotating traveling block hook suitable for offshore drilling and repairing operations according to claim 2 is characterized by: The motor seat is connected to the power motor on one side, to the encoder on the other side, and to the hook cylinder on the other side; sealing devices are designed on the mounting surfaces of the motor seat and the hook cylinder, the mounting surfaces of the power motor, and the mounting surfaces of the encoder.

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