CN212201880U

CN212201880U - Inner sleeve inserted type top driving device

Info

Publication number: CN212201880U
Application number: CN202020853258.7U
Authority: CN
Inventors: 迟秀英
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2020-12-22
Anticipated expiration: 2030-05-20

Abstract

The embodiment of the utility model relates to oil, natural gas drilling equipment technical field provides a bayonet top drive device of endotheca, including reducing gear box, gyration gear wheel, gyration head, endotheca and fastener, the box of locating the reducing gear box is inserted to the endotheca, gyration gear wheel suspension cover locate the endotheca and with gyration head fixed connection, the upper end of endotheca is equipped with the flange, fastener fixed mounting in the endotheca, with the outer terminal surface contact of reducing gear box for the box clamp of reducing gear box is located between flange and the fastener. The embodiment of the utility model provides a device is driven on bayonet top of endotheca sets up the flange through including the endotheca to install the fastener on the endotheca, utilize flange and fastener with the firm fixing of endotheca on reduction box, realize inseparable cooperation of endotheca and reducing gear box, avoid driving too big axial load when the operation on the top and make the endotheca deviate from the box of reducing gear box.

Description

Inner sleeve inserted type top driving device

Technical Field

The utility model relates to an oil, natural gas drilling equipment technical field especially relates to a bayonet top drive device of endotheca.

Background

A top drive drilling device, called top drive device for short, is petroleum drilling equipment for replacing a turntable to provide rotary power. The top drive device is provided with a rotary head for driving the hoisting ring and the elevator to move, and a series of operations are carried out on the drilling tool on the drilling platform surface.

The installation of traditional swivel head on the device is driven on the top adopts the main shaft single channel to bear, in processes such as well drilling and tripping, all loads all are used on the main shaft to on transmitting the box of reducing gear box through the base bearing, the fatigue wear of main shaft and base bearing has been accelerated to this kind of connected mode, greatly reduced the life of the device is driven on the top, very big shortening the overhaul interval cycle of the device is driven on the top, increased manufacturing cost. In order to improve the stress of the main shaft, a flange or a hoop is connected to the inner sleeve instead, but the main shaft is long in total length, not easy to detach, complex in connection and multiple in leakage points.

In order to improve the defects of the structure, an inner sleeve hot-installation insertion type structure is adopted, so that the inner sleeve and the reduction gearbox body form interference fit, the rotary head is rotationally connected with the inner sleeve, the load of the rotary head acts on the reduction gearbox through the inner sleeve, but the insertion type inner sleeve is easy to loosen under certain special working conditions and even is separated from the reduction gearbox body, and the normal operation of the top drive device is influenced.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a device is driven on bayonet top of endotheca for solve the easy not hard up problem that takes place of endotheca among the current device is driven on bayonet top of endotheca.

The embodiment of the utility model provides a device is driven on bayonet top of endotheca, including reducing gear box, gyration gear wheel, swivel head and endotheca, the endotheca is inserted and is located the box of reducing gear box, gyration gear wheel suspension cover is located the endotheca and with swivel head fixed connection still includes the fastener, the upper end of endotheca is equipped with the flange, fastener fixed mounting in the endotheca, with the outer terminal surface contact of reducing gear box for the box clamp of reducing gear box is located the flange with between the fastener.

The fastening piece is a fastening ring, and the fastening ring is in threaded connection with the inner sleeve.

Wherein, the periphery of tighrening ring distributes and has protruding structure.

The flange and the box body of the reduction box are circumferentially fixed through a pin shaft, and the axial direction of the pin shaft is the same as that of the inner sleeve.

And an upper deep groove ball bearing, a lower deep groove ball bearing and a thrust bearing are sequentially arranged between the inner sleeve and the rotary head from top to bottom.

Wherein, the embodiment of the utility model provides an bayonet top of endotheca drives device still is including bearing card key and fixing base, and is a plurality of bear card key evenly distributed in the periphery of endotheca is used for bearing the downward load that produces of revolving head, the periphery of endotheca is located the below of revolving head is equipped with and is used for the card to establish bear the positioning groove of card key, the fixing base is located bear the below of card key and with endotheca fixed connection, the fixing base is equipped with and is used for holding bear the dog of the side of card key, thrust bearing's inner circle bear in bear the card key.

And an adjusting gasket is arranged between the thrust bearing and the bearing clamp key.

And a dustproof ring is arranged between the rotary large gear and the inner sleeve.

The inner sleeve is internally provided with a hydraulic rotary oil channel of an inclined oil cylinder, the outer wall of the inner sleeve is provided with an oil inlet and an oil outlet which are communicated with the hydraulic rotary oil channel, the inner wall of the rotary head is provided with oil grooves which are respectively communicated with the oil inlet and the oil outlet, two sealing grooves are respectively arranged on two sides of each oil groove, and a sealing ring is arranged in each sealing groove.

The inner sleeve is also internally provided with an inner blowout preventer hydraulic rotary oil duct and a back-up tong hydraulic rotary oil duct which are respectively communicated with four oil ports at the bottom of the inner sleeve.

The embodiment of the utility model provides a device is driven on bayonet top of endotheca through setting up the flange on the endotheca to install the fastener on the endotheca, utilize flange and fastener with the firm fixing of endotheca on reduction box, realize inseparable cooperation of endotheca and reducing gear box, avoid driving the too big axial load when the operation on the top and make the endotheca deviate from the box of reducing gear box.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of the inner sleeve insertion type top drive device of the present invention;

FIG. 2 is a schematic structural view of the inner sleeve inserted top drive fastener of the present invention;

fig. 3 is a partially enlarged schematic view of a portion a of the inner sleeve insertion type top drive device of the present invention.

In the figure: 1. a reduction gearbox; 2. rotating the bull gear; 21. a dust ring; 3. a turret head; 31. an oil inlet groove; 32. an oil return groove; 33. a seal ring; 4. an inner sleeve; 41. a flange; 42. an oil inlet channel; 43. an oil return passage; 44. an oil inlet; 45. an oil outlet; 5. a fastener; 51. a raised structure; 61. an upper deep groove ball bearing; 62. a lower deep groove ball bearing; 63. a thrust bearing; 71. a bearing card key; 72. a fixed seat; 721. a stopper; 8. and adjusting the gasket.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be noted that the terms "first" and "second" are used for clearly indicating the numbering of the product parts and do not represent any substantial difference unless explicitly stated or limited otherwise. The directions of "up", "down", "left" and "right" are all based on the directions shown in the attached drawings. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, the structure schematic diagram of the inner sleeve insertion type top drive device of the present invention includes a reduction gearbox 1, a rotation gear wheel 2, a rotary head 3 and an inner sleeve 4, wherein the inner sleeve 4 is inserted into the box body of the reduction gearbox 1, and the rotation gear wheel 2 is suspended and sleeved on the inner sleeve 4 and fixedly connected with the rotary head 3, such as through a bolt fixed connection. The inner sleeve 4 inserted type top driving device further comprises a fastener 5, a flange 41 is arranged at the upper end of the inner sleeve 4, and the fastener 5 is fixedly installed on the inner sleeve 4 and is in contact with the outer end face of the reduction gearbox 1, so that the box body of the reduction gearbox 1 is clamped between the flange 41 and the fastener 5. Wherein, the box body of the reduction box 1 is provided with a mounting hole, the inner sleeve 4 can be inserted into the mounting hole in a hot-charging insertion mode, namely, the box body of the reduction box 1 is heated to expand the mounting hole, the inner sleeve 4 is inserted into the mounting hole, and the inner sleeve 4 is tightly held after the box body of the reduction box 1 is cooled, so that interference fit is formed between the box body and the inner sleeve 4.

The embodiment of the utility model provides a device is driven on 4 bayonet tops of endotheca through set up flange 41 in endotheca 4 upper ends to install fastener 5 on endotheca 4, utilize flange 41 and fastener 5 with the firm fixing of endotheca 4 on the reducing gear box 1 body, realize inseparable cooperation of endotheca 4 and reducing gear box 1, avoid driving the too big axial load when the operation on the top and make endotheca 4 deviate from the box of reducing gear box 1.

The embodiment of the utility model provides an in, fastener 5 can be the backing pin of nailing 4 outer walls in endotheca perpendicularly, and a plurality of backing pins evenly distributed are in 4 peripheries of endotheca to cooperation flange 41 is located between a plurality of backing pins and flange 41 with the box clamp of reducing gear box 1. The fastening member 5 may also be a fastening ring which is screw-coupled with the inner sleeve 4. Specifically, the inner sleeve 4 is provided with external threads at a position close to the end of the reduction gearbox 1, internal threads matched with the internal threads are arranged on the inner periphery of the fastening ring, the fastening ring is sleeved in from the lower end of the inner sleeve 4 and is screwed in the direction of the outer end face of the reduction gearbox 1 along the external threads of the inner sleeve 4, and therefore the box body of the reduction gearbox 1 is clamped. The fastening ring type fastener 5 can facilitate installation and removal. Wherein, as shown in fig. 2, the embodiment of the present invention provides a schematic structural diagram of a fastener, the fastener 5 is a fastening ring, and a protrusion structure 51, such as a spline, is distributed on the periphery of the fastening ring, so as to facilitate installation.

The embodiment of the utility model provides an in, flange 41 carries out circumference fixedly with the box of reducing gear box 1 through the round pin axle, and the axis direction of round pin axle is the same with the axis direction of endotheca 4 to in endotheca 4 takes place circumferential direction in the mounting hole. The pin shaft is a shear pin shaft and is used for resisting the shear force between the flange 41 and the reduction gearbox 1 when the inner sleeve 4 bears the circumferential load.

In the embodiment of the present invention, as shown in fig. 1, an upper deep groove ball bearing 61, a lower deep groove ball bearing 62 and a thrust bearing 63 are sequentially installed between the inner sleeve 4 and the rotary head 3 from top to bottom. The upper deep groove ball bearing 61 and the lower deep groove ball bearing 62 are used for realizing circumferential rotation of the rotary head 3 relative to the inner sleeve 4, and the upper deep groove ball bearing and the lower deep groove ball bearing are arranged for keeping good coaxiality of the rotary head 3 and the inner sleeve 4. The thrust bearing 63 may alternatively be a tapered roller thrust bearing 63 to take axial loads of the turret head 3 and the devices suspended thereon.

As shown in fig. 1, the inner sleeve insertion type top drive device provided by the embodiment of the present invention further includes a bearing clamp key 71 and a fixing seat 72. The plurality of bearing clamping keys 71 are uniformly distributed on the periphery of the inner sleeve 4 and are used for bearing the load generated downwards by the rotary head 3. The periphery of the inner sleeve 4 is provided with a positioning groove which is positioned below the rotary head 3 and used for clamping a bearing clamping key 71. The fixing seat 72 is located below the positioning key and is fixedly connected with the inner sleeve 4, the fixing seat 72 is provided with a stop 721 for supporting the side surface of the bearing key 71, and the inner ring of the thrust bearing 63 is supported on the bearing key 71. During the rotation of the rotary head 3, the axial load generated by the rotary head 3 and the devices suspended thereon is transferred to the bearing clamp key 71 through the thrust bearing 63, and then the load is applied to the reduction gearbox through the inner sleeve.

In the embodiment of the present invention, the adjusting shim 8 is installed between the thrust bearing 63 and the bearing key 71. The thickness of the adjusting shim 8 is configured reasonably according to the installation clearance.

Because the large rotary gear 2 is suspended and sleeved on the inner sleeve 4, a gap is formed between the large rotary gear 2 and the inner sleeve 4. The embodiment of the utility model provides an in, set up dust ring 21 between gyration gear wheel 2 and endotheca 4, avoid the dust to get into the fitting surface of gyration head 3 and endotheca 4 from this clearance, influence the rotation of gyration head 3. If the upper deep groove ball bearing 61 is installed at the upper end of the rotary head 3, it is possible to prevent dust from entering the upper deep groove ball bearing 61, which may cause bearing failure.

In the embodiment of the utility model, as shown in fig. 1, be equipped with the hydraulic pressure gyration oil duct of slope hydro-cylinder in the endotheca 4, the outer wall of endotheca 4 is equipped with oil inlet 44 and oil-out 45 with the hydraulic pressure gyration oil duct intercommunication, and the inner wall of swivel head 3 is equipped with the oil groove that communicates with oil inlet 44 and oil-out 45 respectively, and the equal twice seal groove in each oil groove both sides is equipped with sealing washer 33 in the seal groove. Wherein, the cross section of the oil groove can be U-shaped or semicircular.

Specifically, as shown in fig. 3, the partial enlarged schematic view of the part a of the plug-in top drive device of the inner sleeve of the present invention is that the hydraulic rotary oil passage of the tilt oil cylinder in the inner sleeve 4 is divided into an oil inlet passage 42 and an oil return passage 43, i.e., the oil inlet passage 42 is communicated with the oil inlet 44 of the outer wall of the inner sleeve 4, and the oil return passage 43 is communicated with the oil outlet 45 of the outer wall of the inner sleeve 4. The oil groove of the inner wall of the rotary head 3 is an annular groove and is divided into an oil inlet groove 31 and an oil return groove 32, the oil inlet groove 31 is communicated with an oil inlet 44 on the outer wall of the inner sleeve 4, and the oil return groove 32 is communicated with an oil outlet 45 on the outer wall of the inner sleeve 4. An oil inlet channel communicated with the oil inlet groove 31 and an oil return channel communicated with the oil return groove 32 are further arranged inside the rotary head 3, and an oil inlet communicated with the oil inlet channel inside the rotary head 3 and an oil outlet communicated with the oil return channel inside the rotary head 3 are correspondingly arranged on the outer wall of the rotary head 3. That is, the oil inlet channel 42 in the inner sleeve 4, the oil inlet groove 31 in the inner wall of the rotary head 3 and the oil inlet channel in the rotary head 3 together form an oil inlet channel of the tilt cylinder, and the oil return channel 43 in the inner sleeve 4, the oil return groove 32 in the inner wall of the rotary head 3 and the oil return channel in the rotary head 3 together form an oil return channel of the tilt cylinder.

The embodiment of the utility model provides an in, still be equipped with interior preventer hydraulic pressure gyration oil duct and back-up tong hydraulic pressure gyration oil duct in endotheca 4, wherein, interior preventer hydraulic pressure gyration oil duct and back-up tong hydraulic pressure gyration oil duct all include oil feed channel and oil return channel, totally four oil ducts promptly, respectively with four hydraulic fluid ports of endotheca 4 bottoms intercommunication.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The inner sleeve insertion type top driving device is characterized by further comprising a fastener, a flange is arranged at the upper end of the inner sleeve, the fastener is fixedly installed on the inner sleeve and is in contact with the outer end face of the reduction box, and the box body of the reduction box is clamped between the flange and the fastener.

2. The internally-inserted top drive of claim 1, wherein the fastener is a fastening ring, and the fastening ring is threadedly coupled to the internal sleeve.

3. The internally-inserted top drive device as claimed in claim 2, wherein the fastening ring has a raised structure distributed on its outer circumference.

4. The internally-inserted top drive device as claimed in any one of claims 1 to 3, wherein the flange and the box body of the reduction box are circumferentially fixed by a pin, and the axial direction of the pin is the same as that of the internal sleeve.

5. The internally-inserted top drive device as claimed in claim 4, wherein an upper deep groove ball bearing, a lower deep groove ball bearing and a thrust bearing are sequentially arranged between the internal sleeve and the rotary head from top to bottom.

6. The inner sleeve insertion type top drive device according to claim 5, further comprising a plurality of bearing snap keys and a fixing seat, wherein the bearing snap keys are uniformly distributed on the periphery of the inner sleeve and used for bearing the load generated downwards by the rotary head, the periphery of the inner sleeve is positioned below the rotary head and provided with a positioning groove for clamping the bearing snap keys, the fixing seat is positioned below the bearing snap keys and fixedly connected with the inner sleeve, the fixing seat is provided with a stop block for supporting the side surfaces of the bearing snap keys, and the inner ring of the thrust bearing is supported on the bearing snap keys.

7. The internally-inserted top drive device as claimed in claim 6, wherein an adjusting shim is installed between the thrust bearing and the bearing key.

8. The internally-inserted top drive device as claimed in any one of claims 1 to 3, wherein a dust ring is arranged between the rotary bull gear and the internal sleeve.

9. The inner sleeve insertion type top drive device according to any one of claims 1 to 3, wherein a hydraulic rotary oil passage of a tilt cylinder is arranged in the inner sleeve, an oil inlet and an oil outlet communicated with the hydraulic rotary oil passage are arranged on the outer wall of the inner sleeve, an oil groove communicated with the oil inlet and the oil outlet respectively is arranged on the inner wall of the rotary head, two seal grooves are arranged on two sides of each oil groove, and a seal ring is arranged in each seal groove.

10. The inner sleeve insertion type top drive device as claimed in claim 9, wherein the inner sleeve is further provided with an inner blowout preventer hydraulic rotary oil passage and a back-up tong hydraulic rotary oil passage which are respectively communicated with four oil ports at the bottom of the inner sleeve.