Compact inertia brake for turntable drive

Abstract

The invention discloses a compact inertia brake for a turntable driving device, which comprises a first crowned tooth coupling and a second crowned tooth coupling, the first crowned tooth coupling and the second crowned tooth coupling are fixedly connected through a connecting disc, the outer wall of the connecting disc is fixedly connected with a friction hub, and the outer wall of the friction hub is provided with a pneumatic tire clutch; the first crowned tooth coupling is in key connection with the turntable driving shaft, and the second crowned tooth coupling is fixedly connected with the drum shaft. The compact inertia brake is simple and compact in structure and convenient to install and maintain, braking force directly acts on a transmission chain through the crowned tooth coupler in the braking process, the braking reaction speed is high, and reliability is high.

Description

Technical Field

[0001] The present invention belongs to the technical field of oil drilling equipment, and particularly relates to a compact inertial brake for a rotary table drive device. Background Art

[0002] The rotary table drive device is an important component of the rotary system of an oil drilling rig, which can be used to drive the drill string in the well to rotate, providing the necessary torque and required rotational speed. The inertial brake is an essential supporting component for the rotary table drive device, which can ensure that the rotary table stops rotating quickly when the power input stops, preventing accidents caused by the inability of the rotary table to stop quickly due to the action of inertial force during the transmission process; at the same time, it can prevent the downhole drill string from reversing and releasing the torque, and has the function of releasing the reverse torque of the drill string.

[0003] Currently, the rotary table drive device mostly uses a ventilation-type clutch as the actuator of the rotary table inertial brake, which is installed between the motor and the reduction gearbox. It has the advantages of high structural reliability and low production cost. However, the ventilation-type clutch requires adding a connecting hub at the output shaft end of the rotary table drive device motor, resulting in complex forces on the output shaft of the rotary table drive device motor, which is not conducive to the efficient transmission of power. During the braking process, the braking reaction speed is slow, the reliability is low, and the overall dimensions of the rotary table drive device increase, and the number of components increases, which is not conducive to the quick installation and maintenance of the rotary table drive device inertial brake. Summary of the Invention

[0004] The purpose of the present invention is to provide a compact inertial brake for a rotary table drive device, which solves the problems of slow braking reaction speed and low reliability in the existing braking process.

[0005] The technical solution adopted by the present invention is that the compact inertial brake for a rotary table drive device includes a first drum gear coupling and a second drum gear coupling. The first drum gear coupling and the second drum gear coupling are fixedly connected through a connecting plate. The outer wall of the connecting plate is fixedly connected with a friction hub, and an air-tire clutch is arranged on the outer wall of the friction hub; the first drum gear coupling is key-connected to the rotary table drive shaft, and the second drum gear coupling is fixedly connected to the reel shaft.

[0006] The characteristics of the present invention also lie in that:

[0007] It further includes a bracket for fixing the air-tire clutch.

[0008] A keyway is arranged on the inner wall of the first drum gear coupling, and the keyway is connected to the rotary table drive shaft through a key.

[0009] A plurality of first bolts are arranged along the circumferential direction inside the second drum gear coupling, and the second drum gear coupling is connected to the reel shaft through the plurality of first bolts.

[0010] An annular groove is provided along the circumferential direction on the outer wall of the connecting plate, the friction hub is arranged in the annular groove, several second bolts are provided along the circumferential direction in the annular groove, and the connecting plate is fixedly connected with the friction hub through the several second bolts.

[0011] The pneumatic tire clutch is arranged in alignment with the friction hub.

[0012] The inner diameter of the pneumatic tire clutch is larger than the outer diameter of the friction hub.

[0013] The beneficial effects of the present invention are as follows:

[0014] The compact inertial brake for the rotary table drive device provided by the present invention has a simple and compact structure, is convenient for installation and maintenance. During the braking process, the braking force directly acts on the transmission chain through the drum tooth coupling, with a fast braking reaction speed and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the compact inertial brake for the rotary table drive device of the present invention;

[0016] Figure 2 is Figure 1 a schematic connection diagram of the drum tooth coupling and the friction hub in

[0017] In the figure, 1. keyway, 2. first drum tooth coupling, 3. bracket, 4. pneumatic tire clutch, 5. friction hub, 6. first bolt, 7. second bolt, 8. second drum tooth coupling, 9. connecting plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following will describe the specific embodiments of the present invention in detail with reference to the drawings.

[0019] The compact inertial brake for the rotary table drive device provided by the present invention, as Figure 1 shown, includes a first drum tooth coupling 2 and a second drum tooth coupling 8. The first drum tooth coupling 2 and the second drum tooth coupling 8 are fixedly connected through a connecting plate 9. The outer wall of the connecting plate 9 is fixedly connected with a friction hub 5. During operation, synchronous movement of the friction hub 5 with the first drum tooth coupling 2 and the second drum tooth coupling 8 can be achieved. An outer wall of the friction hub 5 is provided with a pneumatic tire clutch 4. The pneumatic tire clutch 4 is arranged in alignment with the friction hub 5. The inner diameter of the pneumatic tire clutch 4 is larger than the outer diameter of the friction hub 5. The pneumatic tire clutch 4 and the friction hub 5 are not in contact and are in a separated state. The pneumatic tire clutch 4 is an execution component for the braking action; the first drum tooth coupling 2 is key-connected to the rotary table drive shaft to transmit torque, and the second drum tooth coupling 8 is fixedly connected to the reel shaft; it further includes a bracket 3. The bracket 3 fixes the pneumatic tire clutch 4, and the bracket 3 can withstand the reaction force during the entire braking process. As Figure 2As shown in the figure, a keyway 1 is provided on the inner wall of the first drum gear coupling 2, and the keyway 1 is connected to the rotary table drive shaft through a key; a number of first bolts 6 are provided along the circumferential direction inside the second drum gear coupling 8, and the second drum gear coupling 8 is connected to the drum shaft through a number of first bolts 6 to transmit torque; an annular groove is provided along the circumferential direction on the outer wall of the connecting disc 9, the friction hub 5 is arranged in the annular groove, a number of second bolts 7 are provided along the circumferential direction in the annular groove, and the connecting disc 9 is fixedly connected to the friction hub 5 through a number of second bolts 7.

[0020] The compact inertial brake of the present invention for the rotary table drive device has the following working principle: when the rotary table drive device brakes, the pneumatic tire clutch 4 expands and holds the friction hub 5. Due to the frictional force between the pneumatic tire clutch 4 and the friction hub 5, the friction hub 5 stops rotating, and the first drum gear coupling 2 and the second drum gear coupling 8 that rotate synchronously with the friction hub 5 also stop rotating simultaneously, achieving the purpose of braking.

[0021] Embodiment 1

[0022] The compact inertial brake for the rotary table drive device proposed in this embodiment, as Figure 1 shown, includes a first drum gear coupling 2 and a second drum gear coupling 8. The first drum gear coupling 2 and the second drum gear coupling 8 are fixedly connected through a connecting disc 9. A friction hub 5 is fixedly connected to the outer wall of the connecting disc 9. A pneumatic tire clutch 4 is provided on the outer wall of the friction hub 5. The pneumatic tire clutch 4 is arranged in alignment with the friction hub 5, and the inner diameter of the pneumatic tire clutch 4 is larger than the outer diameter of the friction hub 5; the first drum gear coupling 2 is key-connected to the rotary table drive shaft, and the second drum gear coupling 8 is fixedly connected to the drum shaft.

[0023] Embodiment 2

[0024] The compact inertial brake for the rotary table drive device proposed in this embodiment, as Figure 1 shown, includes a first drum gear coupling 2 and a second drum gear coupling 8. The first drum gear coupling 2 and the second drum gear coupling 8 are fixedly connected through a connecting disc 9. A friction hub 5 is fixedly connected to the outer wall of the connecting disc 9. A pneumatic tire clutch 4 is provided on the outer wall of the friction hub 5. The pneumatic tire clutch 4 is arranged in alignment with the friction hub 5, and the inner diameter of the pneumatic tire clutch 4 is larger than the outer diameter of the friction hub 5; the first drum gear coupling 2 is key-connected to the rotary table drive shaft, and the second drum gear coupling 8 is fixedly connected to the drum shaft; it further includes a bracket 3 that fixes the pneumatic tire clutch 4.

[0025] Embodiment 3

[0026] The compact inertial brake for the rotary table drive device proposed in this embodiment, as Figure 1As shown, it includes a first drum tooth coupling 2 and a second drum tooth coupling 8. The first drum tooth coupling 2 and the second drum tooth coupling 8 are fixedly connected through a connecting disc 9. The outer wall of the connecting disc 9 is fixedly connected with a friction hub 5. An air-tire clutch 4 is arranged on the outer wall of the friction hub 5. The air-tire clutch 4 is arranged in alignment with the friction hub 5, and the inner diameter of the air-tire clutch 4 is larger than the outer diameter of the friction hub 5. The first drum tooth coupling 2 is key-connected to the turntable drive shaft, and the second drum tooth coupling 8 is fixedly connected to the drum shaft. It further includes a bracket 3 that fixes the air-tire clutch 4. As Figure 2 shown, a keyway 1 is arranged on the inner wall of the first drum tooth coupling 2, and the keyway 1 is connected to the turntable drive shaft through a key. A number of first bolts 6 are arranged along the circumferential direction inside the second drum tooth coupling 8, and the second drum tooth coupling 8 is connected to the drum shaft through the number of first bolts 6.

[0027] Embodiment 4

[0028] The compact inertial brake for the turntable drive device proposed in this embodiment, as Figure 1 shown, it includes a first drum tooth coupling 2 and a second drum tooth coupling 8. The first drum tooth coupling 2 and the second drum tooth coupling 8 are fixedly connected through a connecting disc 9. The outer wall of the connecting disc 9 is fixedly connected with a friction hub 5. An air-tire clutch 4 is arranged on the outer wall of the friction hub 5. The air-tire clutch 4 is arranged in alignment with the friction hub 5, and the inner diameter of the air-tire clutch 4 is larger than the outer diameter of the friction hub 5. The first drum tooth coupling 2 is key-connected to the turntable drive shaft, and the second drum tooth coupling 8 is fixedly connected to the drum shaft. It further includes a bracket 3 that fixes the air-tire clutch 4. As Figure 2 shown, a keyway 1 is arranged on the inner wall of the first drum tooth coupling 2, and the keyway 1 is connected to the turntable drive shaft through a key. A number of first bolts 6 are arranged along the circumferential direction inside the second drum tooth coupling 8, and the second drum tooth coupling 8 is connected to the drum shaft through the number of first bolts 6. An annular groove is arranged along the circumferential direction on the outer wall of the connecting disc 9, the friction hub 5 is arranged in the annular groove, and a number of second bolts 7 are arranged along the circumferential direction in the annular groove. The connecting disc 9 is fixedly connected to the friction hub 5 through the number of second bolts 7.

Claims

1. A compact inertial brake for a turntable drive device, characterized in that, It includes a first drum gear coupling (2) and a second drum gear coupling (8). The first drum gear coupling (2) and the second drum gear coupling (8) are fixedly connected through a connecting disc (9). A friction hub (5) is fixedly connected to the outer wall of the connecting disc (9), and a pneumatic tyre clutch (4) is arranged on the outer wall of the friction hub (5); the first drum gear coupling (2) is key-connected to the turntable drive shaft, and the second drum gear coupling (8) is fixedly connected to the reel shaft.

2. The compact inertial brake for a turntable drive device according to claim 1, characterized in that, It further includes a bracket (3), and the bracket (3) fixes the pneumatic tyre clutch (4).

3. The compact inertial brake for a turntable drive device according to claim 1 or 2, characterized in that, A keyway (1) is arranged on the inner wall of the first drum gear coupling (2), and the keyway (1) is connected to the turntable drive shaft through a key.

4. The compact inertial brake for a turntable drive device according to claim 3, characterized in that, A plurality of first bolts (6) are arranged along the circumferential direction inside the second drum gear coupling (8), and the second drum gear coupling (8) is connected to the reel shaft through the plurality of first bolts (6).

5. The compact inertial brake for a turntable drive device according to claim 4, characterized in that, An annular groove is arranged along the circumferential direction on the outer wall of the connecting disc (9), the friction hub (5) is arranged in the annular groove, a plurality of second bolts (7) are arranged along the circumferential direction in the annular groove, and the connecting disc (9) is fixedly connected to the friction hub (5) through the plurality of second bolts (7).

6. The compact inertial brake for a turntable drive device according to claim 5, characterized in that, The pneumatic tyre clutch (4) is arranged in alignment with the friction hub (5).

7. The compact inertial brake for a turntable drive device according to claim 6, characterized in that, The inner diameter of the pneumatic tyre clutch (4) is larger than the outer diameter of the friction hub (5).

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