Rotating body mechanism of drilling drive device, drilling drive device and application thereof

Abstract

The present invention relates to a rotary body mechanism of a drilling drive device, a drilling drive device, and its application, comprising at least one elastic component, and a fixed part, an inner sleeve assembly, a bearing, a gear assembly, a main shaft, a rotary body, and a pressure-bearing assembly coaxially arranged from top to bottom; the rotary body and the gear assembly are connected via the elastic component; the inner sleeve assembly and the gear assembly are respectively connected to the fixed part; the bearing is arranged in a defined area between the inner sleeve assembly and the gear assembly; and the main shaft is connected to the fixed part and the pressure-bearing assembly. The present invention eliminates the bearing group and supporting assembly space inside the rotary body, reduces the difficulty of rotary body processing, saves costs, and at the same time, reduces the volume and weight of the rotary body, facilitating the compact design of the drilling drive device.

Description

Technical Field

[0001] The invention relates to a rotary body mechanism of a drilling drive device, the drilling drive device and its application. Background Art

[0002] A drilling drive system consists of a power structure, a rotary structure, a circulation structure, and a torsion bearing structure. The rotary structure is generally required to have both rotational and load-bearing functions. Existing drilling drive systems generally utilize an external power source to drive the rotary structure to achieve their rotational function. The differences in the rotary structure lie in the interface for the external power source and the use of bearings to support the load acting on the main body. Summary of the Invention

[0003] The inventors of the present invention discovered that the use of bearings to support the load on the main body of the rotary body makes the rotary body mechanism difficult to manufacture, resulting in large volume and weight, increasing manufacturing costs and hindering the compact design of the drilling drive device. To at least partially address the technical problems of the prior art, the inventors have provided a rotary body mechanism for a drilling drive device, a drilling drive device, and its applications.

[0004] In a first aspect, an embodiment of the present invention provides a rotary body mechanism of a drilling drive device, comprising at least one elastic component, and a fixing member, an inner sleeve assembly, a bearing, a gear assembly, a main shaft, a rotary body, and a pressure-bearing component coaxially arranged from top to bottom;

[0005] The rotating body and the gear assembly are connected via the elastic assembly;

[0006] The inner sleeve assembly and the gear assembly are respectively connected to the fixing member;

[0007] The bearing is arranged in a defined area between the inner sleeve assembly and the gear assembly;

[0008] The main shaft is connected to the fixing member and the pressure-bearing component;

[0009] The rotary body mechanism has at least a first working state and a second working state:

[0010] In the first working state, the elastic component is in a first compression state, the upper end surface of the rotating body is in contact with the gear assembly, and a first adjustment gap is formed between the lower end surface of the rotating body and the pressure-bearing component;

[0011] In the second working state, the elastic component is in a second compressed state, a second adjustment gap is provided between the upper end surface of the rotating body and the gear component, and the lower end surface of the rotating body is in contact with the pressure-bearing component.

[0012] In one or some optional embodiments, the elastic component includes a spring, a spring core shaft and a spring gland;

[0013] The rotating body includes a gear connecting ear, and the gear assembly includes a gear body and a spring groove. The corresponding positions of the gear connecting ear and the spring groove are respectively provided with through holes, the spring core shaft passes through the through holes and is connected to the spring pressure cover, the spring is placed in the spring groove and sleeved on the spring core shaft, the spring pressure cover is placed above the spring and fixed to the gear body.

[0014] In one or some optional embodiments, the elastic component further comprises a spring upper seat and a spring lower seat;

[0015] The spring is located in a cavity formed by the spring upper seat and the spring lower seat;

[0016] The spring pressure cover is fixed to the spring upper seat, and the spring upper seat is fixed to the gear body;

[0017] The lower end surface of the spring upper seat contacts the upper end surface of the spring lower seat, and the lower end surface of the spring lower seat contacts the upper end surface of the spring groove.

[0018] In one or some optional embodiments, the elastic component further comprises a spring seat assembly; the spring seat assembly is used to fix the spring seat to the gear body so that the spring is in a first compression state when the spring seat assembly is disengaged.

[0019] In one or some optional embodiments, a main shaft groove is provided at the lower portion of the main shaft, and the main shaft 7 is connected to the pressure-bearing component through the main shaft groove.

[0020] In one or some optional embodiments, the pressure-bearing assembly includes a pressure-bearing clamping ring and a support sleeve, and the pressure-bearing clamping ring is connected to the support sleeve.

[0021] In one or some optional embodiments, the inner sleeve assembly includes an inner sleeve, the inner sleeve is connected to the fixing member, and the inner sleeve is provided with an inner sleeve limiting groove.

[0022] In one or some optional embodiments, the gear assembly further includes a gear cover and a cover bolt, and the gear cover is fixed above the gear body; the spring groove is opened along the circumferential surface of the gear body.

[0023] In one or some optional embodiments, the rotating body mechanism further includes a limiting ring; the limiting ring is connected to the limiting groove of the inner sleeve.

[0024] In one or some optional embodiments, the upper end surface of the bearing contacts the inner sleeve and the gear cover, and the lower end surface of the bearing contacts the limit ring and the gear body.

[0025] In one or some optional embodiments, the rotating body further includes a main body and a pressure-bearing ear, the gear connecting ear and the pressure-bearing ear are arranged on both sides of the main body, and the gear connecting ear is arranged on the upper part of the main body.

[0026] In one or some optional embodiments, the number of the gear connecting ears is consistent with the number of the elastic components.

[0027] In one or some optional embodiments, the number of the elastic components and the gear connecting ears is four.

[0028] In a second aspect, an embodiment of the present invention provides a driving device for drilling, comprising the rotary body mechanism of the driving device for drilling.

[0029] In a third aspect, an embodiment of the present invention provides an application of the rotary body mechanism of the above-mentioned driving device for drilling in the driving device for drilling.

[0030] The embodiments of the present invention achieve at least the following technical effects:

[0031] The rotary body mechanism of the drilling drive device provided in this embodiment has a gear assembly whose weight is transferred to the fixed part through the bearing and the inner sleeve assembly, and the weight of the pressure-bearing assembly is ultimately applied to the fixed part through the main shaft. Therefore, the bearing group and the supporting assembly space inside the rotary body are eliminated, the difficulty of rotary body processing is reduced, and the cost is saved. At the same time, the volume and weight of the rotary body are reduced, which facilitates the compact design of the drilling drive device.

[0032] The rotary body mechanism of the drilling drive device provided in this embodiment is in a second working state, i.e., a load-bearing state, when the rotary body is subjected to an external load. The rotary body compresses the elastic component, which is in the second compressed state, and the second adjustment gap between the gear assembly and the rotary body is opened. At this time, the rotary body is connected to the pressure-bearing component, and the rotary body can meet the load-bearing operation requirements. The rotary body mechanism of the drilling drive device provided in this embodiment is in a first working state, i.e., a floating working state, when the rotary body is not subjected to an external load. The weight of the gear assembly is transferred to the fixed component via the bearing and the inner sleeve assembly, and the elastic component is connected to the gear assembly. The elastic component is in the first compressed state. The preload of the elastic component raises the height of the rotary body, closing the second adjustment gap between the gear assembly and the rotary body. At this time, the rotary body structure can meet the requirements of the rotary operation, and the first adjustment gap between the pressure-bearing component and the rotary body is opened. The rotary body does not come into contact with the pressure-bearing component during rotation, thereby preventing friction with the pressure-bearing component, thereby improving the service life of the rotary body.

[0033] The rotary mechanism of the drilling drive device provided in an embodiment of the present invention, when there is no external load, uses the spring force of spring assembly 6 to lift the rotary body 8, separating it from the pressure-bearing assembly 9. At this time, the rotary structure is in a floating state, and the rotary mechanism can complete the rotary operation. When the rotary body 8 is subjected to an external load, the spring assembly 6 is compressed under the weight of the external load, causing the rotary body 8 to contact the pressure-bearing assembly 9. At this time, the rotary structure is in a load-bearing state, and the rotary mechanism cannot complete the rotary operation. The compression and rebound of the spring assembly 6 achieve safety interlocking between different operating states of the rotary mechanism.

[0034] The rotary body mechanism of the drilling drive device provided in this embodiment is provided with three interfaces. Among them, the fixed part serves as a load-bearing interface, and a suitable connection interface can be adopted according to the design requirements of the fixed part itself; the gear assembly serves as a rotational power interface. Due to its large interface space size and lack of peripheral interference, various types of drive devices can be used to drive the rotation of the gear; and the pressure ear on the rotary body serves as the second load-bearing interface. Due to its large load-bearing area, it is connected to the pressure ear through various connection forms to meet the load-bearing operation requirements of the rotary body structure. By providing three interfaces, better coordination with other external mechanisms can be achieved during rotary operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Elements with the same reference numerals in the drawings represent similar elements. Unless otherwise stated, the drawings in the drawings are not limited to scale.

[0036] Figure 1 It is a schematic diagram of the appearance of the present invention;

[0037] Figure 2 is a partial cross-sectional view of the present invention;

[0038] Figure 3 This is a bottom view of the appearance of the present invention;

[0039] Figure 4 is a cross-sectional view of the elastic component of the present invention;

[0040] Figure 5 It is a schematic diagram of the appearance of the elastic component of the present invention.

[0041] In the figure: 1-fixing part, 2-inner sleeve assembly, 201-inner sleeve, 202-inner sleeve bolt, 203-inner sleeve limiting groove, 3-bearing, 4-limiting ring, 5-gear assembly, 501-gear body, 502-gear pressure cover, 503-spring groove, 504-pressure cover bolt, 6-elastic component, 601-spring, 602-spring core shaft, 603-spring pressure cover, 604-spring upper seat, 605-spring lower seat, 606-spring pressure cover positioning piece, 607-spring upper seat assembly, 7-spindle, 701-spindle groove, 8-rotating body, 801-gear connecting ear, 802-pressure ear, 803-main body, 9-pressure-bearing component, 901-pressure-bearing retaining ring, 902-support sleeve. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0043] It should be noted that, unless there is a conflict, the various features of the embodiments of the present invention may be combined with each other and are all within the scope of protection of the present invention. In addition, although the functional modules are divided in the device schematics and the logical order is shown in the flowcharts, in some cases, the steps shown or described may be performed in a different order than the module division in the device schematics or the order in the flowcharts.

[0044] Unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification are intended solely for the purpose of describing specific embodiments and are not intended to limit 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.

[0045] This embodiment provides a rotary body mechanism of a drilling drive device, referring to Figure 1 and Figure 2 As shown, it includes at least one elastic component 6, and a fixing member 1, an inner sleeve assembly 2, a bearing 3, a gear assembly 5, a main shaft 7, a rotating body 8 and a pressure-bearing component 9 coaxially arranged from top to bottom;

[0046] The rotating body 8 is connected to the gear assembly 5 via the elastic assembly 6;

[0047] The inner sleeve assembly 2 and the gear assembly 5 are respectively connected to the fixing member 1;

[0048] The bearing 3 is arranged in a defined area between the inner sleeve assembly 2 and the gear assembly 5;

[0049] The main shaft 7 is connected to the fixing member 1 and the pressure-bearing component 9;

[0050] The rotary body mechanism has at least a first working state and a second working state:

[0051] In the first working state, the elastic component 6 is in a first compression state, the upper end surface of the rotating body 8 is in contact with the gear component 5, and a first adjustment gap is formed between the lower end surface of the rotating body 8 and the pressure-bearing component 9;

[0052] In the second working state, the elastic component 6 is in a second compressed state, a second adjustment gap is provided between the upper end surface of the rotating body 8 and the gear component 5 , and the lower end surface of the rotating body 8 is in contact with the pressure-bearing component 9 .

[0053] In the embodiment of the present invention, when the rotating body 8 is not subjected to an external load, the elastic component 6 is in a first compressed state. At this time, the rotating body 8 is lifted up by the elastic force of the elastic component 6, the first adjustment gap between the pressure-bearing component 9 and the rotating body 8 is opened, and the upper end surface of the rotating body 8 contacts the gear assembly 5. The rotating body structure is in a first working state, which can also be called a floating state. In this state, no friction is generated between the rotating body 8 and the pressure-bearing component 9. Therefore, when the external driving device drives the gear assembly 8, the rotating body 8 can complete the rotation operation.

[0054] When the rotating body 8 is subjected to an external load, the rotating body 8 compresses the elastic component 6, so that the elastic component 6 switches from the first compression state to the second compression state. At this time, the second adjustment gap between the gear component 5 and the rotating body 8 is opened, and the lower end surface of the rotating body 8 is in contact with the pressure-bearing component 9. The rotating body structure is in the second working state, which can also be called the load-bearing state. In this state, the rotating body 8 and the pressure-bearing component 9 are tightly fitted, and the gravity of the external load of the rotating body 8 is applied to the pressure-bearing component 9. At this time, the rotating body 8 can complete the load-bearing operation requirements.

[0055] The rotary mechanism of the drilling drive device provided in an embodiment of the present invention, when there is no external load, uses the spring force of the spring assembly 6 to lift the rotary body 8, separating the rotary body 8 from the pressure-bearing assembly 9. At this time, the rotary structure is in a floating state, and the rotary mechanism can complete the rotary operation. When the rotary body 8 is subjected to an external load, the spring assembly 6 is compressed under the weight of the external load, and the rotary body 8 comes into contact with the pressure-bearing assembly 9. At this time, the rotary structure is in a load-bearing state, and the rotary mechanism cannot complete the rotary operation. The compression and rebound of the spring assembly 6 achieve safety interlocking of the different operating states of the rotary mechanism.

[0056] In the rotary mechanism of the drilling drive device provided by the present invention, the weight of the gear assembly 6 is transferred to the fixed component 1 via the bearing 3 and the inner sleeve assembly 2. Furthermore, the weight of the pressure-bearing assembly 9 also acts on the fixed component 1 via the main shaft 7. Consequently, the bearing assembly and the associated assembly space within the rotary body 8 are eliminated, simplifying the machining of the rotary mechanism and saving costs. Furthermore, the rotary mechanism is reduced in size and weight, facilitating a more compact design for the drilling drive device.

[0057] In the embodiment of the present invention, referring to Figure 2 As shown, the inner sleeve assembly 2 includes an inner sleeve 201, which is connected to the fixing member 1 and has an inner sleeve limiting groove 203. Specifically, the inner sleeve assembly 2 may further include an inner sleeve bolt 202, through which the inner sleeve 201 is fixedly connected to the fixing member 1.

[0058] In the embodiment of the present invention, referring to Figure 2 As shown, the rotary body mechanism further includes a limiting ring 4, which is connected to the inner sleeve limiting groove 203. The limiting ring 4 is clamped in the inner sleeve limiting groove 203, contacts the lower end surface of the bearing 3, and limits the bearing 3.

[0059] In the embodiment of the present invention, referring to Figure 2As shown, the gear assembly 5 includes a gear body 501, a gear gland 502, and a spring groove 503. 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 gland bolts 504, and the gear gland 502 is fixed to the gear body 501 via the gland bolts 504.

[0060] In the embodiment of the present invention, referring to Figure 2 As shown, the upper end surface of the bearing 3 contacts the inner sleeve 201 and the gear cover 502, and the lower end surface of the bearing 3 contacts the limit ring 4 and the gear body 501, thereby fixing the bearing 3 between the inner sleeve assembly 2 and the gear assembly 5.

[0061] In the embodiment of the present invention, since the upper end face and the lower end face of the bearing 3 respectively abut the gear body 501 and the gear pressure cover 502, the fixed connection between the gear body 501 and the gear pressure cover 502 can realize the fixing of the bearing 3 and the axial limitation of the gear assembly 5 by the bearing 3.

[0062] In this embodiment of the present invention, the bearing 3 can be a load-bearing bearing or other bearing structures described in the prior art. The specific implementation method can be referred to the detailed descriptions in the prior art and is not specifically limited here. In this embodiment of the present invention, the fixing member 1 is a load-bearing interface that serves as a supporting structure for the structural unit located in the upper space of the drilling drive device. Generally, the structural unit located in the upper space is the power structural unit of the drilling drive device. The weight of the fixing member 1 itself does not act on the rotating body 8, but rather on the structural unit located in the upper space. Furthermore, since the inner sleeve assembly 2 is connected to the fixing member 1 via the inner sleeve bolts 201, the retaining ring 4 is disposed in the inner sleeve retaining groove 203 of the inner sleeve assembly 2 and secures the bearing 3 between the inner sleeve assembly 2 and the gear assembly 5. This transfers the weight of the gear assembly 5 to the fixing member 1 via the bearing 3 and inner sleeve assembly 2. This transfers the entire weight of the inner sleeve assembly 2, bearing 3, retaining ring 4, and gear assembly 5 to the fixing member 1.

[0063] In the embodiment of the present invention, referring to Figure 2 As shown, the rotating body 8 includes a gear connecting ear 801, a pressure-bearing ear 802 and a main body 803. The gear connecting ear 801 and the pressure-bearing ear 802 are both arranged on the side wall of the main body 803, and the gear connecting ear 801 is arranged on the upper part of the main body 803. The elastic component 6 is connected to the gear connecting ear 801, thereby realizing the connection between the gear assembly 5 and the rotating body 8. The pressure-bearing ear 802 serves as a load-bearing interface for bearing external loads. Figure 1As shown, the pressure-bearing ear 802 can be arranged in the middle or lower part of the main body 803.

[0064] In the embodiment of the present invention, the number of the gear connecting ears 801 provided on the rotating body 8 may be three or more, and the number of the pressure-bearing ears 802 provided on the rotating body 8 may be two or more.

[0065] In one embodiment, referring to Figures 2 to 4 As shown, the elastic component 6 includes a spring 601, a spring core shaft 602 and a spring pressure cover 603;

[0066] The gear connecting ear 801 of the rotating body 8 and the corresponding positions of the spring groove 503 are respectively provided with through holes, the spring core shaft 602 passes through the through holes and is connected to the spring pressure cover 603, the spring 601 is placed in the spring groove 503 and is sleeved on the spring core shaft 602, the spring pressure cover 603 is placed above the spring 601 and is fixed to the gear body 501.

[0067] In an embodiment of the present invention, the spring core shaft 602 passes through the gear connecting ear 801 and the spring groove 503 from bottom to top, so that the spring 601 placed in the spring groove 503 is sleeved on the spring core shaft 602, and the spring 601 is confined in the spring groove 503 by the spring pressure cover 603, thereby realizing the limiting of the spring 601.

[0068] In a specific embodiment, the number of the gear connecting ears 801 of the rotating body 8 is consistent with the number of the elastic components 6. The number of the gear connecting ears 801 and the number of the elastic components 6 can be adjusted according to actual needs, and the distance between any two elastic components 6 can also be adjusted according to needs. Figure 1 The number of the elastic components 6 and the gear connecting ears 801 is 4, and the 4 elastic components 6 are evenly arranged along the circumferential surface of the gear body 501.

[0069] In a specific embodiment, the elastic component 6 further includes a spring upper seat 604, a spring lower seat 605 and a spring pressure cover positioning member 606;

[0070] The lower end surface of the spring upper seat 604 contacts the upper end surface of the spring lower seat 605 , and the lower end surface of the spring lower seat 605 contacts the upper end surface of the spring groove 503 ;

[0071] The spring 601 is located in the cavity formed by the spring upper seat 604 and the spring lower seat 605;

[0072] The spring pressure cover 603 is fixed on the spring upper seat 604 via a spring pressure cover positioning member 606 .

[0073] In the embodiment of the present invention, the spring 601 is confined in the cavity formed by the spring upper seat 604 and the spring lower seat 605 to prevent the spring 601 from moving radially, thereby preventing the spring 601 from receiving uneven circumferential force.

[0074] As a specific embodiment, the spring pressure cover positioning member 606 is a positioning bolt, and the spring pressure cover 603 is fixed on the spring upper seat 604 through the positioning bolt.

[0075] In a specific embodiment, the elastic component 6 further includes a spring upper seat assembly 607;

[0076] The spring upper seat 604 is fixed to the gear body 501 via the spring upper seat assembly 607 .

[0077] In the embodiment of the present invention, the spring upper seat 604 is fixed to the gear body 501 by a spring upper seat assembly 607 , so that when the spring upper seat assembly 607 is disengaged, the spring 601 is in a first compressed state.

[0078] As a specific embodiment, the spring upper seat assembly part 607 is an assembly bolt, and the spring upper seat 604 is fixed to the gear body 501 by the assembly bolt.

[0079] In the embodiment of the present invention, a spring core shaft 602 extends through the entire elastic assembly 6, connecting the entire elastic assembly 6 to the spring groove 503. Furthermore, the spring core shaft 602 is connected to the gear connection ear 801 of the rotating body 8, thereby achieving a connection between the gear assembly 5 and the rotating body 8. Since the spring 601 in the elastic assembly 6 is compressed by the spring upper seat assembly 607 during assembly, when the spring upper seat assembly 607 is disengaged, the pre-load is configured, placing the spring 601 in a first compressed state, thereby closing the second adjustment gap between the gear assembly 5 and the rotating body 8. In other words, the weight of the rotating body 8 is supported by the spring 601 and transmitted to the fixed component 1 through the gear assembly 5 and the inner sleeve assembly 2.

[0080] In an embodiment of the present invention, the spring preload forming process is as follows:

[0081] First, connect the spring core shaft 602, the spring lower seat 605, the spring 601, the spring upper seat 604 and the spring groove 503 in sequence;

[0082] Next, use the spring upper seat assembly bolts to fix the spring upper seat 604 to the gear body 501. At this time, the spring 601 is under pressure. Then connect the spring pressure cover 603 to the spring upper seat 604 and fix the spring pressure cover 603 with the spring pressure cover positioning bolts.

[0083] Finally, the spring upper seat assembly bolts are removed to put the spring 601 in the first compressed state. At this point, the spring preload for lifting the weight of the rotating body 8 has been formed.

[0084] In the embodiment of the present invention, referring to Figure 2 As shown, a main shaft groove 701 is provided at the lower portion of the main shaft 7 , and the main shaft 7 is connected to the pressure-bearing component 9 via the main shaft groove 701 .

[0085] In a specific embodiment, the pressure-bearing assembly 9 includes a pressure-bearing snap ring 901 and a support sleeve 902 , and the pressure-bearing snap ring 901 is connected to the support sleeve 902 .

[0086] As a specific implementation of the embodiment of the present invention, the lower end of the main shaft 7 may be connected to the pressure-bearing retaining ring 901 via the main shaft groove 701, and the outer side of the pressure-bearing retaining ring 901 is connected to the inner side of the support sleeve 902. Because the pressure-bearing assembly 9 is fixed to the main shaft 7, the weight of the pressure-bearing retaining ring 901 and the support sleeve 902 of the pressure-bearing assembly 9 acts on the fixing member 1 through the main shaft 7.

[0087] The rotary mechanism of this embodiment has two working states:

[0088] The first working state is a floating state (at this time, the elastic component 6 is in a first compressed state):

[0089] The weight of the gear assembly 5 is transferred to the fixed component 1 via the bearing 3 and inner sleeve assembly 2. The elastic component 6 is connected to the spring groove 503 of the gear assembly 5. Therefore, when the pressure-bearing ear 802 of the rotating body 8 is not subjected to external load, the spring preload is transmitted to the rotating body 8 via the spring core shaft 602, raising the rotating body 8 and closing the second adjustment gap between the gear assembly 5 and the rotating body 8. At this point, the rotating body mechanism can meet the requirements of rotational operation, and the first adjustment gap between the pressure-bearing retaining ring 901 and the rotating body 8 is opened. During rotation, the rotating body mechanism does not come into contact with the pressure-bearing retaining ring 901, thereby eliminating friction with the pressure-bearing retaining ring 901 and extending the service life of the rotating body 8.

[0090] The second operating state is the load-bearing state (in which the elastic assembly 6 is in the second compressed state). The pressure-bearing snap ring 901 is connected to the main shaft 7 via the main shaft groove 701. The outer side of the pressure-bearing snap ring 901 is connected to the support sleeve 902. The weight of the pressure-bearing snap ring 901 and the support sleeve 902 ultimately acts on the fixed component 1 through the main shaft 7. Therefore, when the pressure-bearing ear 802 of the rotating body 8 is subjected to an external load, the rotating body 8 compresses the spring 601 through the spring core shaft 602, and the second adjustment gap between the gear assembly 5 and the rotating body 8 is opened. At this time, the first adjustment gap between the pressure-bearing snap ring 901 and the rotating body 8 is closed, and the rotating body 8 is connected to the pressure-bearing snap ring 901. The rotating body 8 can complete the load-bearing operation requirements. In this state, the rotating body 8 and the main shaft 7 form a linkage, and its operation mode depends on the main shaft operation mode. The sum of the compression of the spring 601 in the load-bearing state and the compression corresponding to the preload should meet the spring characteristic requirements to avoid irreversible damage. The compressed state of the spring 601 when in pre-stress is the first compressed state; the compressed state of the spring 601 when in a load-bearing state is the second compressed state.

[0091] Based on the same inventive concept, an embodiment of the present invention further provides a driving device for drilling, comprising the rotary body mechanism of the driving device for drilling.

[0092] This rotary body mechanism is actually a part of the overall structure of the drilling drive device, so its adaptability will also affect its practicality. The rotary body mechanism in the embodiment of the present invention is simple and effective in its working principle, and is provided with three interfaces: the fixing part 1 is used as a load-bearing interface, and its interface form with the inner sleeve assembly 2 and the main shaft 7 is not limited to bolt connection, and a suitable connection interface can be used according to the design requirements of the fixing part 1 itself; the gear assembly 5 is used as a rotational power interface, because its interface space size is large and there is no interference from the periphery, various types of drive devices can be used to drive the rotation of the gear assembly 5; the pressure ear 802 on the rotary body 8 is used as the second load-bearing interface, because the pressure ear 802 has a large load-bearing area, it can be connected to the pressure ear 802 through various connection forms, which can meet the load-bearing operation requirements of the rotary body mechanism.

[0093] The specific implementation method of the above-mentioned drilling drive device provided in the embodiment of the present invention can refer to the detailed description of the rotating body mechanism of the drilling drive device in the above embodiment. Of course, during the implementation process, those skilled in the art can also refer to the detailed description in the prior art, and the repeated parts will not be repeated.

[0094] Based on the same inventive concept, an embodiment of the present invention further provides an application of the above-mentioned rotary body mechanism of the drilling drive device in the drilling drive device.

[0095] The specific implementation method of the application of the rotating body mechanism of the above-mentioned drilling drive device provided by the embodiment of the present invention in the drilling drive device can refer to the detailed description of the rotating body mechanism of the drilling drive device and the drilling drive device in the above-mentioned embodiment. Of course, during the implementation process, those skilled in the art can also refer to the detailed description in the prior art, and the repeated parts will be omitted.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Under the idea of ​​the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the present invention as described above. For the sake of simplicity, they are not provided in detail. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of this application.

Claims

1. A rotary body mechanism of a drilling drive device, characterized in that: The invention comprises at least one elastic component (6), and a fixing member (1), an inner sleeve assembly (2), a bearing (3), a gear assembly (5), a main shaft (7), a rotating body (8) and a pressure-bearing component (9) which are coaxially arranged from top to bottom; The rotating body (8) is connected to the gear assembly (5) via the elastic assembly (6); The inner sleeve assembly (2) and the gear assembly (5) are respectively connected to the fixing member (1); The bearing (3) is arranged in a limited area between the inner sleeve assembly (2) and the gear assembly (5); The main shaft (7) is connected to the fixing member (1) and the pressure-bearing component (9); The rotary body mechanism has at least 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 rotating body (8) is in contact with the gear component (5), and a first adjustment gap exists between the lower end surface of the rotating body (8) and the pressure-bearing component (9); In the second working state, the elastic component (6) is in a second compressed state, a second adjustment gap exists between the upper end surface of the rotating body (8) and the gear component (5), and the lower end surface of the rotating body (8) is in contact with the pressure-bearing component (9); The elastic component (6) includes a spring (601), a spring core shaft (602) and a spring pressure cover (603); the rotating body (8) includes a gear connecting ear (801); the gear component (5) includes a gear body (501) and a spring groove (503); and through holes are respectively provided at corresponding positions of the gear connecting ear (801) and the spring groove (503); The spring core shaft (602) passes through the through hole and is connected to the spring pressure cover (603). The spring (601) is placed in the spring groove (503) and is sleeved on the spring core shaft (602). The spring pressure cover (603) is placed above the spring (601) and is fixed to the gear body (501).

2. The rotary body mechanism of the drilling drive device according to claim 1, characterized in that: The elastic component (6) further comprises a spring upper seat (604) and a spring lower seat (605); The spring (601) is located in a cavity formed by the spring upper seat (604) and the spring lower seat (605); The spring pressure cover (603) is fixed to the spring upper seat (604), and the spring upper seat (604) is fixed to the gear body (501); The lower end surface of the spring upper seat (604) contacts the upper end surface of the spring lower seat (605), and the lower end surface of the spring lower seat (605) contacts the upper end surface of the spring groove (503).

3. The rotary body mechanism of the drilling drive device according to claim 2, characterized in that: The elastic component (6) further includes a spring upper seat assembly (607); The spring upper seat assembly (607) is used to fix the spring upper seat (604) to the gear body (501), so that when the spring upper seat assembly (607) is disengaged, the spring (601) is in a first compressed state.

4. The rotary body mechanism of the drilling drive device according to claim 1, characterized in that: A main shaft groove (701) is provided at the lower portion of the main shaft (7), and the main shaft (7) is connected to the pressure-bearing component (9) via the main shaft groove (701).

5. The rotary body mechanism of the drilling drive device according to claim 4, characterized in that: The pressure-bearing assembly comprises a pressure-bearing snap ring (901) and a support sleeve (902), and the pressure-bearing snap ring (901) is connected to the support sleeve (902).

6. The rotary body mechanism of the drilling drive device according to claim 1, characterized in that: The inner sleeve assembly (2) comprises an inner sleeve (201), the inner sleeve (201) is connected to the fixing member (1), and the inner sleeve (201) is provided with an inner sleeve limiting groove (203).

7. The rotary body mechanism of the drilling drive device according to claim 6, characterized in that: The gear assembly (5) further includes a gear gland (502); The gear pressure cover (502) is fixed above the gear body (501), and the spring groove (503) is opened along the circumferential surface of the gear body (501).

8. The rotary body mechanism of the drilling drive device according to claim 7, characterized in that: Also includes a limiting ring (4); The limiting ring (4) is connected to the inner sleeve limiting groove (203).

9. The rotary body mechanism of the drilling drive device according to claim 8, characterized in that: The upper end surface of the bearing (3) contacts the inner sleeve (201) and the gear cover (502), and the lower end surface of the bearing (3) contacts the limiting ring (4) and the gear body (501).

10. The rotary body mechanism of the drilling drive device according to claim 1, characterized in that: The rotating body (8) further includes a main body (803) and a pressure-bearing ear (802); The gear connecting ear (801) and the pressure-bearing ear (802) are arranged on the side wall of the main body (803), and the gear connecting ear (801) is arranged on the upper part of the main body (803).

11. The rotary body mechanism of the drilling drive device according to claim 1, characterized in that: The number of the gear connecting ears (801) is consistent with the number of the elastic components (6).

12. The rotary body mechanism of the drilling drive device according to claim 11, characterized in that: The number of the elastic components (6) and the gear connecting ears (801) is four.

13. A driving device for drilling, characterized in that: A rotary body mechanism comprising the drilling drive device according to any one of claims 1 to 12.

14. Use of the rotary body mechanism of a drilling drive device according to any one of claims 1 to 12 in a drilling drive device.

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