Independent driving device for turntable

Abstract

The utility model relates to the technical field of petroleum drilling equipment, and particularly discloses a turntable independent driving device which comprises a driving device, a coupler, a turntable and a chain box, a second input shaft used for driving the turntable to work is arranged at the input end of the turntable, and one end of the chain box is rotatably connected with a first input shaft. The output end of the driving device is coaxially and fixedly connected with the coupler, the coupler is coaxially and fixedly connected with the first input shaft, the other end of the chain box is rotationally connected with a small chain wheel coaxially and fixedly connected with the second input shaft, the first input shaft is coaxially and fixedly connected with a large chain wheel, and the small chain wheel and the large chain wheel are both located in the chain box and are in transmission through a chain. Compared with the prior art, according to the technical scheme, the overall length of the rotating disc independent driving device is reduced, it is not needed to spend a large amount of time to adjust the model size of each component any more, and the installation efficiency of the electrically-driven rotating disc independent driving device on the base is improved.

Description

Technical Field

[0001] This utility model relates to the field of oil drilling equipment technology, and in particular to an independent drive device for a rotary table. Background Technology

[0002] The rotary table is one of the important pieces of equipment in oil drilling rigs. The transmission principle of the existing electric rotary table independent drive device is that the motor inputs power to the gearbox through the coupling, and after the gear reduction, the rotary table is driven to work through the universal coupling. Due to the structural limitations of the gear reducer, the input shaft of the motor and the input shaft of the rotary table can only be set opposite each other, which results in a relatively long overall length of the rotary table independent drive device, which requires a relatively large base size for installation.

[0003] With the widespread use of electric workover rigs, the independent drive unit of the electric rotary table is generally installed in conjunction with the electric workover rig. Due to the small size of the base of the electric workover rig, a lot of time must be spent adjusting the model and size of each component during each installation of the independent drive unit of the electric rotary table to avoid the length of the independent drive unit of the electric rotary table exceeding the size of the base, resulting in very low installation efficiency of the independent drive unit of the electric rotary table on the base.

[0004] Therefore, it is necessary to propose an independent drive device for the turntable to improve the installation efficiency of the electric drive turntable independent drive device. Utility Model Content

[0005] The purpose of this invention is to solve the problem of low installation efficiency of existing electric rotary table independent drive devices on the workover rig base, and now provides a rotary table independent drive device.

[0006] The technical solution of this utility model is:

[0007] An independent drive device for a turntable includes a drive device, a coupling, and a turntable. The input end of the turntable is provided with a second input shaft for driving the turntable to work. The device also includes a chain box, one end of which is rotatably connected to a first input shaft. The output end of the drive device is coaxially and fixedly connected to the coupling, and the coupling is coaxially and fixedly connected to the first input shaft.

[0008] The other end of the chain box is rotatably connected to a small sprocket that is coaxially fixed to the second input shaft. A large sprocket is coaxially fixed to the first input shaft. Both the small sprocket and the large sprocket are located inside the chain box and are driven by a chain.

[0009] Furthermore, the chain box includes a left box and a right box. A first oil slinger ring is fixedly connected to the inner side of the left box, and a second oil slinger ring is fixedly connected to the inner side of the right box. A groove is provided between the first oil slinger ring and the second oil slinger ring, and an oil leakage port is provided at the bottom of the first oil slinger ring.

[0010] Furthermore, the left box is fixedly connected to a first connecting plate, and the right box is fixedly connected to a second connecting plate. The first connecting plate is provided with a sealing groove, and a sealing ring is provided in the sealing groove. The left and right boxes are tightened together by a tightening mechanism.

[0011] Furthermore, a bearing end cover is installed at the input end of the turntable, and a retaining ring is machined on the bearing end cover. The retaining ring is located between the grooves of the first oil slinger ring and the second oil slinger ring.

[0012] Furthermore, the angle between the contact surfaces of the first and second oil slingers and the bottom surface of the chain box is an acute or obtuse angle.

[0013] Furthermore, the horizontal height of the first input shaft is lower than that of the second input shaft.

[0014] Furthermore, an input flange is fixedly connected to the first input shaft.

[0015] Furthermore, it also includes a brake disc and brake caliper, with the brake disc located between the input flange and the coupling.

[0016] Furthermore, the drive unit is an AC motor, and a motor flange is mounted on the input shaft of the AC motor.

[0017] Furthermore, the chain box is equipped with a lubrication line, one end of which is connected to an electric lubricating oil pump.

[0018] This utility model discloses an independent drive device for a rotary table. The drive device drives a first input shaft to rotate via a coupling. The first input shaft drives a large sprocket in a chain box to rotate, and the large sprocket drives a small sprocket on a second input shaft to rotate. The small sprocket is connected to the second input shaft on the rotary table, thereby driving the rotary table to rotate. Since power is transmitted through the large and small sprockets in the chain box, and the large and small sprockets are connected by a chain, the relatively long chain provides sufficient space for the first and second input shafts to be set on the same side. Moreover, since the input and output ends of the chain box are on the same side, the first and second input shafts are no longer facing each other, but are instead set on the same side. This reduces the overall length of the independent drive device for the rotary table, making it more suitable for the base size of electric workover rigs. Compared with traditional technology, this technical solution reduces the overall length of the independent drive device for the rotary table, eliminates the need to spend a lot of time adjusting the model and size of various components, and improves the installation efficiency of the electric rotary table independent drive device on the base. Attached Figure Description

[0019] Figure 1 This is the front view of the present utility model;

[0020] Figure 2 This is a top view of the present invention;

[0021] Figure 3 This utility model Figure 2 Cross-sectional view at point AA;

[0022] Figure 4 This utility model Figure 2 Enlarged view of a section at point B in the middle;

[0023] Figure 5 This utility model Figure 2 Enlarged view of a section at point C.

[0024] Reference numerals: 1. Drive unit; 2. Motor flange; 3. Coupling; 4. Brake disc; 5. Brake caliper; 6. Chain box; 61. Left box; 610. First connecting plate; 611. Second connecting plate; 62. Right box; 63. Input flange; 64. First input shaft; 65. Large sprocket; 66. Tightening mechanism; 67. Sealing ring; 68. Second oil slinger ring; 69. First oil slinger ring; 7. Turntable; 71. Bearing end cover; 72. Small sprocket; 8. Oil drain port; 9. Second input shaft. Detailed Implementation

[0025] 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.

[0026] Example 1:

[0027] like Figure 1 and Figure 2 As shown, this embodiment provides an independent drive device for a turntable, including a drive device 1, a coupling 3, and a turntable 7. The input end of the turntable 7 is provided with a second input shaft 9 for driving the turntable 7. It also includes a chain box 6. One end of the chain box 6 is rotatably connected to a first input shaft 64 via a bearing. The output end of the drive device 1 is coaxially fixedly connected to the coupling 3 with screws. The coupling 3 is coaxially fixedly connected to the first input shaft 64 with screws. The other end of the chain box 6 is rotatably connected to a small sprocket 72 via a bearing. The small sprocket 72 is coaxially fixedly connected to the second input shaft 9 with screws. A large sprocket 65 is coaxially fixedly connected to the first input shaft 64 with screws. Both the small sprocket 72 and the large sprocket 65 are located inside the chain box 6 and are driven by a chain. Preferably, the drive device 1 is an AC motor. A motor flange 2 is installed on the input shaft of the AC motor. Specifically, the chain box 6 is forcibly lubricated, with a lubrication pipeline inside the box and an external electric lubricating oil pump. Preferably, the coupling 3 is a universal coupling 3.

[0028] Preferably, the chain box 6 includes a left box body 61 and a right box body 62. A first oil slinger ring 69 is welded to the inner side of the left box body 61, and a second oil slinger ring 68 is welded to the inner side of the right box body 62. A groove is machined between the first oil slinger ring 69 and the second oil slinger ring 68. Preferably, a bearing end cover 71 is screwed onto the input end of the turntable 7. A retaining ring is machined on the bearing end cover 71. The retaining ring is located in the middle of the groove between the first oil slinger ring 69 and the second oil slinger ring 68. The two form a labyrinth seal to prevent lubricating oil leakage. An oil leakage port 8 is opened at the bottom of the first oil slinger ring 69. The lubricating oil entering the seal enters the chain box 6 through the oil leakage port 8 to prevent lubricating oil from leaking from the labyrinth seal.

[0029] Preferred, such as Figure 4 As shown, a first connecting plate 610 is welded to the left housing 61, and a second connecting plate 611 is welded to the right housing 62. A sealing groove is provided on the first connecting plate 610, and a sealing ring 67 is provided inside the sealing groove. The left housing 61 and the right housing 62 are tightened together by a tightening mechanism 66 to prevent oil leakage. The tightening mechanism is as follows: Figure 4 The diagram shows a bolt-like structure that enables the locking and securing of the housing.

[0030] Preferably, the angle between the contact surface of the first oil slinger ring 69 and the second oil slinger ring 68 and the bottom surface of the chain box 6 is an acute or obtuse angle, and is not perpendicular to the bottom surface of the chain, to further prevent lubricating oil from leaking from the contact surface of the first oil slinger ring 69 and the second oil slinger ring 68.

[0031] Preferably, the horizontal height of the first input shaft 64 is lower than the horizontal height of the second input shaft 9, so as to ensure that the motor is not higher than the upper plane of the base.

[0032] Preferably, an input flange 63 is fixedly connected to the first input shaft 64. Preferably, it also includes a brake disc 4 and a brake caliper 5. The brake disc 4 is located between the input flange 63 and the coupling 3 and is used for inertial braking. The whole set of equipment is installed on the turntable beam 7 and is below the base turntable surface.

[0033] Preferably, the chain box 6 is provided with a lubrication line, one end of which is connected to an electric lubricating oil pump for lubricating the internal structure of the chain box 6.

[0034] The installation process of this equipment is as follows: After positioning the turntable 7, first install the left housing 61. During installation, ensure that the machined retaining ring on the bearing end cover 71 of the turntable 7 is located in the middle of the groove of the first oil slinger ring 69. Then install the right housing 62, tighten the clamping mechanism 66, and after positioning the AC motor according to the chain box 6, install the brake disc 4, universal coupling 3 and brake caliper 5 in sequence.

[0035] During operation, the drive unit 1 drives the first input shaft 64 to rotate via the coupling 3. The first input shaft 64 drives the large sprocket 65 in the chain box 6 to rotate, and the large sprocket 65 drives the small sprocket 72 of the second input shaft 9 to rotate. The small sprocket 72 is connected to the second input shaft 9 on the turntable 7, thereby driving the turntable 7 to rotate. Since power is transmitted through the large sprocket 65 and the small sprocket 72 in the chain box 6, and the large sprocket 65 and the small sprocket 72 are connected by a chain, the relatively long chain provides sufficient space for the first input shaft 64 and the second input shaft 9 to be positioned on the same side. Furthermore, the input and output ends of the chain box 6 are on the same side, so that the first input shaft 64 and the second input shaft 9 are no longer facing each other, but are instead set on the same side. This reduces the overall length of the independent drive device for the rotary table, making it more suitable for the base size of the electric workover rig. Compared with traditional technology, this technical solution reduces the overall length of the independent drive device for the rotary table, eliminating the need to spend a lot of time adjusting the model and size of each component, and improving the installation efficiency of the electric rotary table independent drive device on the base.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent changes and modifications made in accordance with the scope of the claims of this utility model should fall within the technical scope of this utility model.

Claims

1. A turntable independent drive device, comprising a drive device (1), a coupling (3), and a turntable (7), wherein the input end of the turntable (7) is provided with a second input shaft (9) for driving the turntable (7) to work, characterized in that: It also includes a chain box (6), one end of which is rotatably connected to a first input shaft (64), and the output end of the drive device (1) is coaxially and fixedly connected to the coupling (3). The coupling (3) is coaxially and fixedly connected to the first input shaft (64). The other end of the chain box (6) is rotatably connected to a small sprocket (72) that is coaxially fixed to the second input shaft (9). A large sprocket (65) is coaxially fixed to the first input shaft (64). The small sprocket (72) and the large sprocket (65) are both located inside the chain box (6) and are driven by a chain.

2. The independent drive device for the turntable according to claim 1, characterized in that: The chain box (6) includes a left box body (61) and a right box body (62). A first oil slinger ring (69) is fixedly connected to the inner side of the left box body (61), and a second oil slinger ring (68) is fixedly connected to the inner side of the right box body (62). A groove is provided between the first oil slinger ring (69) and the second oil slinger ring (68), and an oil leakage port (8) is provided at the bottom of the first oil slinger ring (69).

3. The independent drive device for the turntable according to claim 2, characterized in that: The left box (61) is fixedly connected to the first connecting plate (610), and the right box (62) is fixedly connected to the second connecting plate (611). The first connecting plate (610) is provided with a sealing groove, and a sealing ring (67) is provided in the sealing groove. The left box (61) and the right box (62) are tightened by the tightening mechanism (66).

4. The independent drive device for the turntable according to claim 2, characterized in that: The input end of the turntable (7) is equipped with a bearing end cover (71), and a retaining ring is machined on the bearing end cover (71). The retaining ring is located in the groove between the first oil slinger ring (69) and the second oil slinger ring (68).

5. The independent drive device for the turntable according to claim 1, characterized in that: The angle between the contact surface of the first oil-slinging ring (69) and the second oil-slinging ring (68) and the bottom surface of the chain box (6) is an acute angle or an obtuse angle.

6. The independent drive device for the turntable according to claim 1, characterized in that: The horizontal height of the first input shaft (64) is lower than the horizontal height of the second input shaft (9).

7. The independent drive device for the turntable according to claim 1, characterized in that: An input flange (63) is fixedly connected to the first input shaft (64).

8. The independent drive device for a turntable according to claim 7, characterized in that: It also includes a brake disc (4) and a brake caliper (5), with the brake disc (4) located between the input flange (63) and the coupling (3).

9. The independent drive device for a turntable according to claim 1, characterized in that: The drive unit (1) is an AC motor, and a motor flange (2) is installed on the input shaft of the AC motor.

10. The independent drive device for a turntable according to claim 1, characterized in that: The chain box (6) is equipped with a lubrication pipeline, and one end of the lubrication pipeline is connected to an electric lubricating oil pump.

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