CN116411792A - Rotary body mechanism of driving device for well drilling, driving device for well drilling and application - Google Patents

Abstract

The invention relates to a revolving body mechanism of a driving device for well drilling, the driving device for well drilling and application thereof, comprising at least one elastic component, a fixing piece, an inner sleeve assembly, a bearing, a gear component, a main shaft, a revolving body and a pressure-bearing component which are coaxially arranged from top to bottom; the rotary body is connected with the gear assembly through the elastic assembly; the inner sleeve assembly and the gear assembly are respectively connected with the fixing piece; the bearing is arranged in a limited area of the inner sleeve assembly and the gear assembly; the main shaft is connected with the fixing piece and the pressure-bearing component. The invention omits a bearing group and a matched assembly space in the revolving body, reduces the processing difficulty of the revolving body, saves the cost, reduces the volume and the weight of the revolving body, and is convenient for the compact design of the driving device for drilling.

Description

Rotary body mechanism of driving device for well drilling, driving device for well drilling and application

Technical Field

The invention relates to a revolving body mechanism of a driving device for well drilling and the driving device for well drilling and application thereof.

Background

The driving device for drilling comprises a power structure, a revolving body structure, a circulating structure and a torsion-bearing structure, wherein the revolving body structure generally needs to have revolving and bearing functions. From the prior well drilling driving device, external power is generally adopted to drive a revolving body structure to realize the revolving function, and the difference in the revolving body structure is different from an interface of external power; the bearing group is adopted to bear the load born by the body, so that the bearing function is realized.

Disclosure of Invention

The inventor of the invention discovers that the revolving body adopts a bearing group to bear the load born by the body, so that the processing difficulty of the revolving body mechanism is high, the volume and the weight are large, the processing cost is increased, and the compact design of the driving device for drilling is not facilitated. In order to at least partially solve the technical problems existing in the prior art, the inventor provides a revolving body mechanism of a driving device for drilling, the driving device for drilling and application thereof.

In a first aspect, an embodiment of the present invention provides a revolving body mechanism of a driving device for drilling, including at least one elastic component, and a fixing piece, an inner sleeve assembly, a bearing, a gear component, a main shaft, a revolving body and a pressure-bearing component coaxially arranged from top to bottom;

the rotary body is connected with the gear assembly through the elastic assembly;

the inner sleeve assembly and the gear assembly are respectively connected with the fixing piece;

the bearing is arranged in a limited area of the inner sleeve assembly and the gear assembly;

the main shaft is connected with the fixing piece and the pressure-bearing component;

the revolving body mechanism at least has a first working state and a second working state:

in a first working state, the elastic component is in a first compression state, the upper end face of the rotary body is in contact with the gear set, and a first adjusting gap is formed between the lower end face of the rotary body and the pressure-bearing component;

in a second working state, the elastic component is in a second compression state, a second adjusting gap is formed between the upper end face of the rotary body and the gear component, and the lower end face of the rotary body is in contact with the pressure-bearing component.

In one or some alternative embodiments, the resilient assembly includes a spring, a spring spindle, and a spring gland;

the rotary body comprises a gear connecting lug, the gear assembly comprises a gear body and a spring groove, through holes are respectively formed in the positions, corresponding to the gear connecting lug and the spring groove, of the gear connecting lug, the spring mandrel penetrates through the through holes and is connected with the spring pressing cover, the spring is arranged in the spring groove and is sleeved on the spring mandrel, and the spring pressing cover is arranged above the spring and is fixed to the gear body.

In one or some alternative embodiments, the resilient assembly further comprises an upper spring seat and a lower spring seat;

the spring is positioned in a cavity formed by the upper spring seat and the lower spring seat;

the spring gland is fixed on the spring upper seat, and the spring upper seat is fixed on the gear body;

the lower end face of the spring upper seat is contacted with the upper end face of the spring lower seat, and the lower end face of the spring lower seat is contacted with the upper end face of the spring groove.

In one or some alternative embodiments, the resilient assembly further comprises a sprung seat fitting; the sprung seat fitting is for securing the sprung seat to the gear body to place the spring in a first compressed state when the sprung seat fitting is disengaged.

In one or some alternative embodiments, the lower part of the spindle is provided with a spindle groove, and the spindle 7 is connected with the pressure-bearing assembly through the spindle groove.

In one or some alternative embodiments, the pressure bearing assembly includes a pressure bearing snap ring and a support sleeve, the pressure bearing snap ring being connected to the support sleeve.

In one or some alternative embodiments, the inner sleeve assembly includes an inner sleeve coupled to the securing member, the inner sleeve defining an inner sleeve retaining groove.

In one or some alternative embodiments, the gear assembly further comprises a gear gland secured above the gear body and a gland bolt; the spring groove is formed along the circumferential surface of the gear body.

In one or some alternative embodiments, the rotator mechanism further comprises a stop collar; the limit ring is connected with the limit groove of the inner sleeve.

In one or some alternative embodiments, the bearing upper end surface is in contact with the inner sleeve and the gear gland, and the bearing lower end surface is in contact with the stop collar and the gear body.

In one or some alternative embodiments, the swivel body further includes a main body and a bearing lug, the gear connection lug and the bearing lug are disposed at both sides of the main body, and the gear connection lug is disposed at an upper portion of the main body.

In one or some alternative embodiments, the number of gear connection lugs corresponds to the number of elastic assemblies.

In one or some alternative embodiments, the number of the elastic assembly and the gear connection lugs is 4.

In a second aspect, an embodiment of the present invention provides a driving device for drilling, including the above-mentioned revolving body mechanism of the driving device for drilling.

In a third aspect, an embodiment of the present invention provides an application of the revolving body mechanism of the driving device for drilling in the driving device for drilling.

The embodiment of the invention at least realizes the following technical effects:

according to the revolving body mechanism of the driving device for drilling, the weight of the gear assembly is transferred to the fixing piece through the bearing and the inner sleeve assembly, and the weight of the pressure-bearing assembly is also acted on the fixing piece through the main shaft, so that the bearing group and the matched assembly space in the revolving body are omitted, the processing difficulty of the revolving body is reduced, the cost is saved, meanwhile, the volume and the weight of the revolving body are reduced, and the compact design of the driving device for drilling is facilitated.

According to the revolving body mechanism of the driving device for drilling, when the revolving body bears external load, the revolving body is in the second working state, namely the bearing state, the revolving body is in the second compression state through the compression elastic assembly, the second adjustment gap between the gear assembly and the revolving body is opened, at the moment, the revolving body is connected with the bearing assembly, and the revolving body can meet the requirement of bearing operation. The revolving body mechanism of the driving device for drilling provided by the embodiment is in a first working state, namely a floating working state, when the revolving body does not bear external load, the weight of the gear assembly is transmitted to the fixing piece through the bearing and the inner sleeve assembly, the elastic assembly is connected with the gear assembly, the elastic assembly is in a first compression state, the height of the revolving body is lifted under the action of the pre-pressure of the elastic assembly, so that a second adjusting gap between the gear assembly and the revolving body is closed, at the moment, the revolving body structure can meet the requirement of revolving operation, the first adjusting gap between the pressure-bearing assembly and the revolving body is opened, the revolving body cannot be contacted with the pressure-bearing assembly during revolving, friction is avoided between the revolving body and the pressure-bearing assembly, and the service life of the revolving body is prolonged.

According to the revolving body mechanism of the driving device for drilling provided by the embodiment of the invention, under the condition that no external load exists, the revolving body 8 is lifted by the spring force of the spring assembly 6, so that the revolving body 8 is separated from the pressure-bearing assembly 9, at the moment, the revolving body structure is in a floating state, the revolving body mechanism can complete revolving operation, under the condition that the revolving body 8 bears the external load, the spring assembly 6 is compressed under the gravity action of the external load, the revolving body 8 is contacted with the pressure-bearing assembly 9, at the moment, the revolving body structure is in a bearing state, and the revolving body mechanism cannot complete revolving operation. Safety interlocking of different working states of the revolving body mechanism is realized through compression and rebound of the spring assembly 6.

The revolving body mechanism of the driving device for well drilling provided by the embodiment is provided with three interfaces, wherein the fixing piece is used as a bearing interface, and a proper connecting interface can be adopted according to the design requirement of the fixing piece; the gear component is used as a rotary power interface, and the interface space is large in size, the periphery is free from interference, and various types of driving devices can be used for driving the gears to rotate; and the bearing lug on the revolving body is used as a second bearing interface, and is connected with the bearing lug through various connection modes due to the large bearing area of the bearing lug, so that the bearing operation requirement of the revolving body structure is met. By arranging three interfaces, the rotary mechanism can be better matched with other external mechanisms when the rotary operation is performed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art. Elements in the figures having the same reference numerals are denoted by similar elements and the figures in the figures do not constitute a scale limitation unless specifically indicated.

FIG. 1 is a schematic view of the appearance of the present invention;

FIG. 2 is a partial cross-sectional view of the present invention;

FIG. 3 is a bottom view of the exterior of the present invention;

FIG. 4 is a cross-sectional view of the spring assembly of the present invention;

FIG. 5 is a schematic view of the elastic assembly of the present invention.

In the figure: 1-mounting, 2-inner sleeve assembly, 201-inner sleeve, 202-inner sleeve bolt, 203-inner sleeve limit groove, 3-bearing, 4-limit ring, 5-gear assembly, 501-gear body, 502-gear gland, 503-spring groove, 504-gland bolt, 6-elastic assembly, 601-spring, 602-spring mandrel, 603-spring gland, 604-spring upper seat, 605-spring lower seat, 606-spring gland positioning member, 607-spring upper seat assembly, 7-spindle, 701-spindle groove, 8-swivel body, 801-gear connecting lug, 802-bearing lug, 803-main body, 9-bearing assembly, 901-bearing clamp ring, 902-support sleeve.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

It should be noted that, if not in conflict, the features of the embodiments of the present invention may be combined with each other, which are all within the protection scope of the present invention. In addition, while the division of functional blocks is performed in a device diagram and the logic sequence is shown in a flowchart, in some cases, the steps shown or described may be performed in a different order than the block division in a device diagram or the sequence in a flowchart.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.

The embodiment provides a revolving body mechanism of a driving device for well drilling, which is shown by referring to fig. 1 and 2 and comprises at least one elastic component 6, a fixing piece 1, an inner sleeve assembly 2, a bearing 3, a gear component 5, a main shaft 7, a revolving body 8 and a pressure-bearing component 9 which are coaxially arranged from top to bottom;

the rotary body 8 is connected with the gear assembly 5 through the elastic assembly 6;

the inner sleeve assembly 2 and the gear assembly 5 are respectively connected with the fixing piece 1;

the bearing 3 is arranged in a limited area of the inner sleeve assembly 2 and the gear assembly 5;

the main shaft 7 is connected with the fixing piece 1 and the pressure-bearing assembly 9;

the revolving body mechanism at least has a first working state and a second working state:

in the first working state, the elastic component 6 is in a first compression state, the upper end surface of the rotary body 8 is in contact with the gear component 5, and a first adjusting gap is formed between the lower end surface of the rotary body 8 and the pressure-bearing component 9;

in the second working state, the elastic component 6 is in a second compression state, a second adjustment gap is formed between the upper end surface of the rotary body 8 and the gear component 5, and the lower end surface of the rotary body 8 is in contact with the pressure-bearing component 9.

In the embodiment of the invention, when the rotary body 8 does not bear external load, the elastic component 6 is in a first compression state, at the moment, the rotary body 8 is lifted up under the elastic force of the elastic component 6, a first adjusting gap between the bearing component 9 and the rotary body 8 is opened, the upper end surface of the rotary body 8 is contacted with the gear component 5, the rotary body structure is in a first working state, which can be called as a floating state, and in the state, friction is not generated between the rotary body 8 and the bearing component 9, so when the external driving device drives the gear component 8, the rotary body 8 can complete rotary operation;

when the revolving body 8 bears external load, the revolving body 8 compresses the elastic component 6, so that the elastic component 6 is switched from a first compression state to a second compression state, at this time, a second adjusting gap between the gear component 5 and the revolving body 8 is opened, the lower end surface of the revolving body 8 contacts with the bearing component 9, the revolving body structure is in a second working state, which can also be called as a bearing state, in this state, the revolving body 8 and the bearing component 9 are tightly attached, and the gravity of the external load of the revolving body 8 is applied to the bearing component 9, at this time, the revolving body 8 can finish the bearing operation requirement.

According to the revolving body mechanism of the driving device for drilling provided by the embodiment of the invention, under the condition that no external load exists, the revolving body 8 is lifted by the spring force of the spring assembly 6, so that the revolving body 8 is separated from the pressure-bearing assembly 9, at the moment, the revolving body structure is in a floating state, the revolving body mechanism can complete revolving operation, under the condition that the revolving body 8 bears the external load, the spring assembly 6 is compressed under the gravity action of the external load, the revolving body 8 is contacted with the pressure-bearing assembly 9, at the moment, the revolving body structure is in a bearing state, and the revolving body mechanism cannot complete revolving operation. The safety interlocking of different working states of the revolving body mechanism is realized through the compression and rebound of the spring assembly 6.

In the revolving body mechanism of the driving device for well drilling provided by the embodiment of the invention, the weight of the gear assembly 6 is transferred to the fixing piece 1 through the bearing 3 and the inner sleeve assembly 2, and the weight of the pressure-bearing assembly 9 also acts on the fixing piece 1 through the main shaft 7. Therefore, the bearing group and the matched assembly space inside the rotary body 8 are omitted, the processing difficulty of the rotary body mechanism is reduced, the cost is saved, and meanwhile, the volume and the weight of the rotary body mechanism are reduced, so that the compact design of the driving device for drilling is facilitated.

In the embodiment of the present invention, referring to fig. 2, the inner sleeve assembly 2 includes an inner sleeve 201, wherein the inner sleeve 201 is connected with the fixing member 1, and the inner sleeve 201 is provided with an inner sleeve limiting groove 203. Specifically, the inner sleeve assembly 2 may further include an inner sleeve bolt 202, and the inner sleeve 201 is fixedly connected to the fixing member 1 through the inner sleeve bolt 202.

In the embodiment of the invention, referring to fig. 2, the revolving body mechanism further comprises a limit ring 4, and the limit ring 4 is connected with the inner sleeve limit groove 203. The limit ring 4 is clamped in the inner sleeve limit groove 203 and contacts with the lower end surface of the bearing 3 to limit the bearing 3.

In the embodiment of the present invention, referring to fig. 2, the gear assembly 5 includes a gear body 501, a gear gland 502, and a spring groove 503, where the gear gland 502 is fixed above the gear body 501; the spring groove 503 is formed along the circumferential surface of the gear body 501. Specifically, the gear assembly 5 may further include a gland bolt 504, and the gear gland 502 is fixed above the gear body 501 by the gland bolt 504.

In the embodiment of the present invention, referring to fig. 2, the upper end surface of the bearing 3 contacts with the inner sleeve 201 and the gear gland 502, and the lower end surface of the bearing 3 contacts with the stop collar 4 and the gear body 501, so as to fix the bearing 3 between the inner sleeve assembly 2 and the gear assembly 5.

In the embodiment of the invention, because the upper end face and the lower end face of the bearing 3 are respectively abutted against the gear body 501 and the gear gland 502, the axial limit of the bearing 3 to the gear assembly 5 can be realized while the bearing 3 is fixed through the fixed connection between the gear body 501 and the gear gland 502.

In the embodiment of the present invention, the bearing 3 may be a load bearing or other structural forms described in the prior art, and the specific implementation may refer to the detailed description in the prior art, which may not be limited herein. In the embodiment of the invention, the fixing piece 1 is a bearing interface, which is a matched structure of a structural unit arranged in the upper space of the drilling driving device, and the structural unit arranged in the upper space is a power structural unit of the drilling driving device in general. The weight of the fastening element 1 itself does not act on the swivel body 8, but rather on the structural unit arranged in the upper space. Meanwhile, since the inner sleeve assembly 2 is connected with the fixing piece 1 through the inner sleeve bolt 201, the limit ring 4 is arranged in the inner sleeve limit groove 203 of the inner sleeve assembly 2, and the bearing 3 is fixed between the inner sleeve assembly 2 and the gear assembly 5, so that the weight of the gear assembly 5 is transferred to the fixing piece 1 through the bearing 3 and the inner sleeve assembly 2. That is, the weight of the inner sleeve assembly 2, the bearing 3, the limit ring 4 and the gear assembly 5 is all transferred to the fixing member 1.

In the embodiment of the present invention, referring to fig. 2, the rotary body 8 includes a gear connection lug 801, a pressure-bearing lug 802, and a main body 803, wherein the gear connection lug 801 and the pressure-bearing lug 802 are disposed on a side wall of the main body 803, and the gear connection lug 801 is disposed on an upper portion of the main body 803. The elastic component 6 is connected through the gear connecting lug 801, so that the connection between the gear component 5 and the rotary body 8 is realized, and the pressure bearing lug 802 is used as a bearing interface for bearing external load. Referring to fig. 1, the pressure receiving ears 802 may be provided at a middle or lower portion of the body 803.

In the embodiment of the present invention, the number of the gear connection lugs 801 provided on the rotating body 8 may be three or more, and the number of the bearing lugs 802 provided on the rotating body 8 may be two or more.

In one embodiment, referring to fig. 2 to 4, the elastic assembly 6 includes a spring 601, a spring mandrel 602, and a spring gland 603;

through holes are respectively formed in the gear connecting lugs 801 of the rotary body 8 and the corresponding positions of the spring grooves 503, the spring mandrel 602 penetrates through the through holes and is connected to the spring press cover 603, the spring 601 is arranged in the spring grooves 503 and is sleeved on the spring mandrel 602, and the spring press cover 603 is arranged above the spring 601 and is fixed to the gear body 501.

In the embodiment of the invention, the spring 601 arranged in the spring groove 503 is sleeved on the spring mandrel 602 by penetrating the gear connecting lug 801 and the spring groove 503 from bottom to top through the spring mandrel 602, and the spring 601 is limited in the spring groove 503 by the spring gland 603, so that the limit of the spring 601 is realized.

In a specific embodiment, the number of gear lugs 801 of the swivel body 8 corresponds to the number of elastic assemblies 6. The number of the gear connecting lugs 801 and the number of the elastic assemblies 6 can be adjusted according to actual needs, and the distance between any two elastic assemblies 6 can also be adjusted according to needs. In a specific embodiment, referring to fig. 1, the number of the elastic assemblies 6 and the gear connection lugs 801 is 4, and the 4 elastic assemblies 6 are uniformly arranged along the circumferential surface of the gear body 501.

In one embodiment, the spring assembly 6 further comprises a sprung base 604, a sprung base 605 and a sprung gland retainer 606;

the lower end surface of the spring upper seat 604 is contacted with the upper end surface of the spring lower seat 605, and the lower end surface of the spring lower seat 605 is contacted with the upper end surface of the spring groove 503;

the spring 601 is located in a cavity formed by the upper spring seat 604 and the lower spring seat 605;

the spring gland 603 is secured to the sprung base 604 by a spring gland retainer 606.

In the embodiment of the invention, the spring 601 is limited in the cavity formed by the upper spring seat 604 and the lower spring seat 605, so that uneven circumferential stress of the spring 601 caused by radial movement of the spring 601 is avoided.

As a specific embodiment, the spring gland retainer 606 is a retainer bolt, and the spring gland 603 is fixed to the spring seat 604 by the retainer bolt.

In one particular embodiment, the resilient assembly 6 further comprises a sprung seat fitting 607;

the sprung base 604 is secured to the gear body 501 by the sprung base fitting 607.

In an embodiment of the present invention, the sprung base 604 is secured to the gear body 501 by a sprung base fitting 607 such that the spring 601 is in a first compressed state when the sprung base fitting 607 is disengaged.

As a specific example, the sprung base fitting 607 is a mounting bolt, and the sprung base 604 is fixed to the gear body 501 by the mounting bolt.

In the embodiment of the invention, the spring mandrel 602 penetrates through the whole elastic assembly 6, so that the elastic assembly 6 is integrally connected with the spring groove 503, and the spring mandrel 602 is connected with the gear connecting lug 801 of the rotary body 8, so that the connection between the gear assembly 5 and the rotary body 8 is realized. Since the spring 601 in the elastic assembly 6 is spring-compressed by the sprung seat assembly 607 upon assembly to complete the configuration of the pre-compression upon disengagement of the sprung seat assembly 607, the spring 601 is brought into a first compressed state such that the second adjustment gap between the gear assembly 5 and the swivel body 8 is closed, i.e. the weight of the swivel body 8 is supported by the spring 601 and transferred to the fixing member 1 via the gear assembly 5 and the inner sleeve assembly 2.

In the embodiment of the invention, the spring pre-compression forming process is as follows:

first, sequentially connecting a spring mandrel 602, a spring lower seat 605, a spring 601 and a spring upper seat 604 with a spring groove 503;

next, the sprung base 604 is fixed to the gear body 501 with sprung base fitting bolts, at which time the spring 601 is compressed, then the sprung gland 603 is connected to the sprung base 604, and the sprung gland 603 is fixed with sprung gland positioning bolts,

finally, the sprung seat mounting bolts are removed, bringing the spring 601 into a first compressed state, up to which the spring pre-compression, which lifts the weight of the slewing body 8, has been established.

In the embodiment of the present invention, referring to fig. 2, a spindle groove 701 is formed in the lower portion of the spindle 7, and the spindle 7 is connected to the pressure-bearing assembly 9 through the spindle groove 701.

In one embodiment, the pressure bearing assembly 9 includes a pressure bearing snap ring 901 and a support sleeve 902, the pressure bearing snap ring 901 being connected to the support sleeve 902.

As a specific implementation manner of the embodiment of the present invention, the lower end of the spindle 7 may be connected to the pressure-bearing snap ring 901 through a spindle groove 701, and the outer side of the pressure-bearing snap ring 901 is connected to the inner side of the support sleeve 902. Since the pressure-bearing assembly 9 is fixed to the main shaft 7, the weight of the pressure-bearing snap ring 901 and the support sleeve 902 of the pressure-bearing assembly 9 acts on the fixing member 1 through the main shaft 7.

The revolving body mechanism of the present embodiment has two working states:

the first operating condition is a floating condition (at this time, the elastic assembly 6 is in a first compressed condition):

the weight of the gear assembly 5 is transferred to the fixing piece 1 through the bearing 3 and the inner sleeve assembly 2, and the elastic assembly 6 is connected with the spring groove 503 of the gear assembly 5, so when the pressure bearing lug 802 of the rotary body 8 does not bear external load, the pre-pressure of the spring is transferred to the rotary body 8 through the spring mandrel 602, the height of the rotary body 8 is lifted, the second adjusting gap between the gear assembly 5 and the rotary body 8 is closed, at the moment, the rotary body mechanism can meet the requirement of rotary operation, the first adjusting gap between the pressure-bearing snap ring 901 and the rotary body 8 is opened, the rotary body mechanism can not contact with the pressure-bearing snap ring 901 during rotation, friction is not generated with the pressure-bearing snap ring 901, and the service life of the rotary body 8 is prolonged. .

The second working state is a bearing state (at this time, the elastic component 6 is in a second compression state), the bearing snap ring 901 is connected with the spindle 7 through the spindle groove 701, the outer side of the bearing snap ring 901 is connected with the supporting sleeve 902, the weights of the bearing snap ring 901 and the supporting sleeve 902 are all acted on the fixing piece 1 through the spindle 7, therefore, when the bearing lug 802 of the rotary body 8 bears external load, the rotary body 8 compresses the spring 601 through the spring mandrel 602, a second adjusting gap between the gear component 5 and the rotary body 8 is opened, at this time, a first adjusting gap between the bearing snap ring 901 and the rotary body 8 is closed, the rotary body 8 is connected with the bearing snap ring 901, the rotary body 8 can finish bearing operation requirements, and in this state, the rotary body 8 and the spindle 7 form linkage, and the operation mode depends on the spindle operation mode. The sum of the compression amount of the bearing state of the spring 601 and the compression amount corresponding to the pre-compression force should meet the characteristic requirement of the spring, and the irreversible damage is not generated. The compression state of the spring 601 at the time of pre-compression is a first compression state; the compressed state of the spring 601 in the loaded state is the second compressed state.

Based on the same inventive concept, the embodiment of the invention also provides a driving device for drilling, which comprises the revolving body mechanism of the driving device for drilling.

The suitability of the present rotary mechanism, which is essentially part of the overall structure of the drilling drive, will also affect its utility. The revolving body mechanism in the embodiment of the invention is provided with three interfaces because of simple and effective working principle: the fixing piece 1 is used as a bearing interface, the interface form of the bearing interface with the inner sleeve assembly 2 and the main shaft 7 is not limited to bolt connection, and a proper connecting interface can be adopted according to the design requirement of the fixing piece 1; the gear assembly 5 is used as a rotary power interface, and because the interface space is large in size and the periphery is not interfered, a plurality of types of driving devices can be adopted to drive the gear assembly 5 to rotate; the bearing lug 802 on the revolving body 8 is used as a second bearing interface, and the bearing lug 802 has a large bearing area and is connected with the bearing lug 802 through various connection modes, so that the bearing operation requirement of the revolving body mechanism can be met.

The specific implementation manner of the driving device for drilling provided by the embodiment of the present invention may refer to the detailed description of the revolving body mechanism of the driving device for drilling in the foregoing embodiment, and of course, in the implementation process, those skilled in the art may refer to the detailed description in the prior art, and the repetition is omitted.

Based on the same inventive concept, the embodiment of the invention also provides an application of the revolving body mechanism of the driving device for drilling in the driving device for drilling.

The specific implementation manner of the application of the revolving body mechanism of the driving device for drilling provided by the embodiment of the invention in the driving device for drilling can refer to the detailed description of the revolving body mechanism of the driving device for drilling and the driving device for drilling in the embodiment, of course, in the implementation process, a person skilled in the art can refer to the detailed description in the prior art, and the repetition is omitted.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the invention, the steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims (15)

1. A revolving body mechanism of a driving device for well drilling, which is characterized in that: comprises at least one elastic component (6), a fixing piece (1), an inner sleeve assembly (2), a bearing (3), a gear component (5), a main shaft (7), a rotary body (8) and a pressure-bearing component (9) which are coaxially arranged from top to bottom;

the rotary body (8) is connected with the gear assembly (5) through the elastic assembly (6);

the inner sleeve assembly (2) and the gear assembly (5) are respectively connected with the fixing piece (1);

the bearing (3) is arranged in a limited area of the inner sleeve assembly (2) and the gear assembly (5);

the main shaft (7) is connected with the fixing piece (1) and the pressure-bearing assembly (9);

the revolving body mechanism at least has a first working state and a second working state:

in a first working state, the elastic component (6) is in a first compression state, the upper end surface of the rotary body (8) is in contact with the gear component (5), and a first adjusting gap is formed between the lower end surface of the rotary body (8) and the pressure-bearing component (9);

in a second working state, the elastic component (6) is in a second compression state, a second adjusting gap is formed between the upper end face of the rotary body (8) and the gear component (5), and the lower end face of the rotary body (8) is in contact with the pressure-bearing component (9).

2. The rotary mechanism of a drilling drive device according to claim 1, wherein: the elastic component (6) comprises a spring (601), a spring mandrel (602) and a spring gland (603); the rotary body (8) comprises a gear connecting lug (801), the gear assembly (5) comprises a gear body (501) and a spring groove (503), and through holes are respectively formed in the corresponding positions of the gear connecting lug (801) and the spring groove (503);

the spring spindle (602) penetrates through the through hole and is connected to the spring gland (603), the spring (601) is arranged in the spring groove (503) and sleeved on the spring spindle (602), and the spring gland (603) is arranged above the spring (601) and is fixed to the gear body (501).

3. The rotary mechanism of a drilling drive device according to claim 1, wherein: the elastic component (6) further comprises a spring upper seat (604) and a spring lower seat (605);

the spring (601) is positioned in a cavity formed by the upper spring seat (604) and the lower spring seat (605);

the spring gland (603) is fixed on the spring upper seat (604), and the spring upper seat (604) is fixed on the gear body (501);

the lower end face of the spring upper seat (604) is in contact with the upper end face of the spring lower seat (605), and the lower end face of the spring lower seat (605) is in contact with the upper end face of the spring groove (503).

4. A rotary mechanism of a well drilling drive unit according to claim 3, wherein: the elastic assembly (6) further comprises a sprung seat fitting (607);

the sprung seat fitting (607) is used to secure the sprung seat (604) to the gear body (501) to bring the spring (601) into a first compressed state when the sprung seat fitting (607) is disengaged.

5. The rotary mechanism of a drilling drive device according to claim 1, wherein: the lower part of the main shaft (7) is provided with a main shaft groove (701), and the main shaft (7) is connected with the pressure-bearing component (9) through the main shaft groove (701).

6. The rotary mechanism of a drilling drive device according to claim 5, wherein: the pressure-bearing assembly comprises a pressure-bearing clamping ring (901) and the pressure-bearing clamping ring (901), and the pressure-bearing clamping ring (901) is connected with the supporting sleeve (902).

7. The rotary mechanism of a driving device for drilling according to claim 2, wherein: the inner sleeve assembly (2) comprises an inner sleeve (201), wherein the inner sleeve (201) is connected with the fixing piece (1), and an inner sleeve limiting groove (203) is formed in the inner sleeve (201).

8. The rotary mechanism of a drilling drive device according to claim 7, wherein: the gear assembly (5) further comprises a gear gland (502);

the gear gland (502) is fixed above the gear body (501), and the spring groove (503) is formed along the circumferential surface of the gear body (501).

9. The rotary mechanism of a drilling drive device according to claim 8, wherein: the device also comprises a limit ring (4);

the limit ring (4) is connected with the inner sleeve limit groove (203).

10. The rotary mechanism of a drilling drive device according to claim 9, wherein: the upper end face of the bearing (3) is in contact with the inner sleeve (201) and the gear gland (502), and the lower end face of the bearing (3) is in contact with the limit ring (4) and the gear body (501).

11. The rotary mechanism of a driving device for drilling according to claim 2, wherein: the rotary body (8) further comprises a main body (803) and a pressure-bearing lug (802);

the gear connecting lug (801) and the pressure-bearing lug (802) are arranged on the side wall of the main body (803), and the gear connecting lug (801) is arranged on the upper portion of the main body (803).

12. The rotary mechanism of a driving device for drilling according to claim 2, wherein: the number of the gear connecting lugs (801) is consistent with the number of the elastic assemblies (6).

13. The rotary mechanism of a drilling drive device according to claim 12, wherein: the number of the elastic components (6) and the gear connecting lugs (801) is 4.

14. A drive for drilling comprising the rotary mechanism of the drive for drilling according to any one of claims 1 to 13.

15. Use of a rotary mechanism of a drive device for drilling according to any one of claims 1-13 in a drive device for drilling.

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