An orbital closed-type tong drill

Abstract

The present invention discloses an orbital closed-type tong iron driller, which relates to the technical field of oil drilling devices. Its specific structure includes: a chassis; an opening is provided on one side of the chassis; a column is installed on the chassis; a vertical guide rail is installed on the column; a lower tong assembly is sleeved on the column, and a lower working hole is provided in the middle of the lower tong assembly, and the lower tong assembly moves up and down along the vertical guide rail; an upper tong assembly is sleeved on the column, and the upper tong assembly is located above the lower tong assembly; an upper working hole is provided at the position corresponding to the lower tong assembly of the upper tong assembly, and the upper tong assembly moves up and down along the vertical guide rail; both the upper tong assembly and the lower tong assembly include a lifting motor and a lifting driving wheel, the lifting driving wheel is installed at the output end of the lifting motor, and the lifting driving wheel meshes with the vertical guide rail. The present invention solves the technical problems of the existing iron driller with complex structure and single function.

Description

Technical Field

[0001] The present invention relates to the technical field of oil drilling devices, and in particular to an orbital closed - type tong iron roughneck. Background Art

[0002] In the fields of oil and gas drilling and workover operations, the connection and disconnection operations of tubular goods are crucial and arduous tasks. Traditional operation methods mostly rely on manual use of tools such as large tongs for the operations of screwing and flushing the tubular goods. This not only has extremely high labor intensity and low efficiency, but also has many potential safety hazards. With the expansion of the scale of oil and gas exploitation and the increasingly complex exploitation environment, the demand for the automation, high - efficiency, and precision of tubular goods operation equipment is becoming more and more urgent.

[0003] During the drilling process, it is necessary to connect and disconnect the tubular goods. At present, the iron roughneck device is usually of an open - type structure, which cannot block flying debris or high - pressure fluid, and is likely to affect the safety of workers; secondly, the existing iron roughneck uses two sets of tongs, namely a quick - screw tong and a flushing tong, with a complex structure and high cost. When in use, the operation is also relatively cumbersome; finally, the existing iron roughneck has a relatively single function and cannot meet the multi - functional needs of users. Summary of the Invention

[0004] The purpose of the present invention is to provide an orbital closed - type tong iron roughneck, which solves the technical problems of the complex structure and single function of the iron roughneck in the prior art.

[0005] An embodiment of the present application discloses an orbital closed - type tong iron roughneck, including:

[0006] A chassis; an opening is provided on one side of the chassis;

[0007] A column, installed on the chassis;

[0008] A lower tong assembly, sleeved on the column;

[0009] An upper tong assembly, sleeved on the column, and the upper tong assembly is located above the lower tong assembly;

[0010] The upper tong assembly includes:

[0011] An upper tong housing;

[0012] An upper clamping unit, rotatably installed inside the upper tong housing;

[0013] A housing, rotatably installed inside the upper tong housing, and the upper clamping unit is installed inside the housing;

[0014] A quick - screw unit, arranged inside the housing, and the output end of the quick - screw unit cooperates with the upper clamping unit;

[0015] A brake unit, which is arranged inside the housing, and the brake end of the brake unit cooperates with the upper clamping unit;

[0016] A punching cylinder, one end of which is installed on the inner wall of the upper tong housing, and the other end extends into the housing and is connected thereto.

[0017] The lower tong assembly includes:

[0018] A lower tong housing;

[0019] A protection mechanism, which is installed on the lower tong housing; the protection mechanism includes:

[0020] A protection hydraulic cylinder;

[0021] A protection ring, which is installed at the piston rod end of the protection hydraulic cylinder;

[0022] A protection folding cover, one end of which is connected to the protection ring, and the other end is installed on the lower tong housing.

[0023] In this application, the iron roughneck is designed as a closed structure, which can not only adapt to harsh environments, ensure the stable assembly of drill pipes, but also ensure the safety of personnel and the cleanliness of the assembly environment.

[0024] Based on the above technical solutions, the embodiments of this application can also be improved as follows:

[0025] Further, it further includes a vertical guide rail, which is installed on the column;

[0026] Both the upper tong assembly and the lower tong assembly include a lifting motor and a lifting driving wheel, the lifting driving wheel is installed at the output end of the lifting motor, and the lifting driving wheel meshes with the vertical guide rail;

[0027] Upper working holes are provided at the corresponding positions of the upper tong assembly and the lower tong assembly, and the upper tong assembly moves up and down along the vertical guide rail. The upper tong assembly further includes a fitting unit, which is installed on the upper working holes. The beneficial effect of this step is that the vertical guide rail is provided to facilitate the subsequent lifting movement of the upper tong assembly and the lower tong assembly.

[0028] Further, during operation, the fast rotation unit performs a fast rotation movement. After the fast rotation action is completed, the brake unit brakes the upper clamping unit so that the upper clamping unit moves synchronously with the fast rotation unit and the housing, and the punching cylinder pulls the housing to complete the punching action. The beneficial effect of this step is that the action switching is performed through the brake unit, which is convenient for the staff to operate.

[0029] Further, the fast rotation unit includes:

[0030] The fast rotation unit includes:

[0031] Fast rotation motor;

[0032] Fast rotation driving wheel, installed at the output end of the fast rotation motor;

[0033] Fast rotation auxiliary wheel, sleeved on the upper clamping unit, and the fast rotation auxiliary wheel meshes with the fast rotation driving wheel;

[0034] The brake unit includes;

[0035] Disc brake;

[0036] Brake disc, sleeved on the upper clamping unit, and the brake disc cooperates with the brake end of the disc brake. The beneficial effect of this step is to realize the switching between fast rotation and punching through the mutual cooperation of each component.

[0037] Further, two pin shafts are installed on the lower clamp assembly, and the top of the pin shaft is cooperatively connected with the upper clamp assembly. The beneficial effect of this step is that the torque at the column can be reduced through the pin shaft, ensuring the stability of the overall structure.

[0038] Further, a lower working hole is provided in the middle of the lower clamp housing, and lower through holes for the column to pass through are provided at both ends of the lower clamp housing;

[0039] The lower clamp assembly further includes:

[0040] Lower clamping unit, installed inside the lower clamp housing, and the clamping end of the lower clamping unit faces the lower working hole.

[0041] Further, there are three columns, and vertical guide rails are installed on two of the columns, and an image recognition module is installed on the remaining one column. The beneficial effect of this step is that the cleanliness of the assembly area can be ensured through the protective folding cover.

[0042] Further, the fitting unit includes:

[0043] Guide sleeve;

[0044] Water spray nozzle, installed on the guide sleeve;

[0045] Oil spray nozzle, installed on the guide sleeve, and the oil spray nozzle and the water spray nozzle are arranged at intervals;

[0046] Hydraulic hollow rotary joint, installed at the bottom of the guide sleeve. The beneficial effect of this step is that the convenience of operation can be improved through the cooperation of various nozzles.

[0047] Further, the fitting unit includes:

[0048] The chassis is installed at the top of the upper tong shell, and an assembly hole matching the upper working hole is formed in the middle of the chassis;

[0049] The auxiliary cylinder is installed inside the assembly hole;

[0050] The climbing mechanism is installed on the upper tong assembly, and the climbing mechanism is located inside the auxiliary cylinder;

[0051] The climbing brake part is installed on the chassis, and the climbing brake part is matched with the outer edge of the auxiliary cylinder. The beneficial effect of this step is that the clamping of the casing can be completed through the climbing mechanism.

[0052] Furthermore, a convex arc surface is arranged on the inner wall of the auxiliary cylinder;

[0053] The climbing mechanism includes:

[0054] The climbing pin;

[0055] The clamping plate, one end of which is connected to the climbing pin;

[0056] The climbing wheel is installed on the side of the clamping plate facing the inner wall of the auxiliary cylinder, and the climbing wheel is in contact with the inner wall of the clamping plate. The beneficial effect of this step is that the clamping of the drill pipe can be completed through the rotational movement of the clamping plate.

[0057] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0058] 1. The present application has a closed structure, which can ensure the cleanliness of the assembly environment and further ensure the safety of operators.

[0059] 2. The upper tong assembly of the present application is designed to integrate the quick rotation unit and the impact buckle hydraulic cylinder, and switch under the operation of the brake unit, so as to simplify the tong body structure, reduce costs and improve the convenience of operation.

[0060] 3. The present application is also provided with a fitting unit, which is assembled with different structures according to actual needs to meet different working requirements, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0062] Figure 1Axonometric schematic diagram of an orbital closed - type tong - iron driller according to Specific Embodiment 1 of the present invention;

[0063] Figure 2 is Figure 1 the top - view;

[0064] Figure 3 is Figure 1 the sectional view;

[0065] Figure 4 is Figure 1 the structural schematic diagram after removing the upper tong shell and the outer shell;

[0066] Figure 5 is Figure 1 the structural schematic diagram of the lower tong assembly part in

[0067] Figure 6 is Figure 5 the structural schematic diagram after removing the protective folding cover;

[0068] Figure 7 is Figure 1 the structural schematic diagram of the upper tong assembly part in another embodiment in

[0069] Figure 8 is Figure 7 the structural schematic diagram of the fitting unit part in another embodiment in

[0070] Reference numerals:

[0071] 1 - chassis; 2 - opening; 3 - column; 4 - vertical guide rail; 5 - lower tong assembly; 6 - lower working hole; 7 - upper tong assembly; 8 - pin shaft; 9 - lifting motor, 10 - lifting driving wheel; 11 - image recognition module;

[0072] 501 - lower tong shell; 502 - lower through - hole; 503 - lower clamping unit; 504 - protection mechanism; 505 - protection hydraulic cylinder; 506 - protection ring; 507 - protection folding cover;

[0073] 701 - upper tong shell; 702 - upper working hole; 703 - upper through - hole; 704 - fitting unit; 705 - upper clamping unit; 706 - outer shell; 707 - quick - rotation unit; 708 - brake unit; 709 - punching - buckle hydraulic cylinder;

[0074] 710 - quick - rotation motor; 711 - quick - rotation driving wheel; 712 - quick - rotation auxiliary wheel; 713 - disc brake;

[0075] 714 - guide sleeve; 715 - water spray nozzle; 716 - oil spray nozzle; 717 - hydraulic hollow rotary joint;

[0076] 718 - Chassis; 719 - Assembly hole; 720 - Climbing mechanism; 721 - Climbing brake part; 722 - Auxiliary cylinder; 723 - Climbing pin; 724 - Splint; 725 - Climbing wheel; 726 - Brake disc. Detailed implementation manner

[0077] The embodiments of the technical solution of the present invention will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present invention more clearly, so they are only examples and cannot be used to limit the protection scope of the present invention.

[0078] It should be noted that unless otherwise specified, the technical terms or scientific terms used in this application should have the ordinary meaning understood by those skilled in the art to which the present invention belongs.

[0079] In this application, unless otherwise clearly specified and limited, the terms “installation”, “connection”, “connection”, “fixation” and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0080] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings of the specification and the specific implementation manner.

[0081] Embodiment:

[0082] As Figure 1-8 shown, the embodiment of the present application discloses an orbital closed - type tong - type iron driller, which is used to complete the rapid and stable assembly of drill pipes and can also achieve the stable assembly of casing pipes; the present application designs the upper tong assembly and the lower tong assembly, adopts a closed - type housing, and uses a column to adjust the vertical position. After reaching the position, the upper tong assembly and the lower tong assembly move downwards, so that the upper working hole and the lower working hole are matched with the drill pipe, and then start to work to complete the rotation connection or disassembly action.

[0083] As Figure 1-4 shown, the structure of the present application is as follows, including:

[0084] Chassis 1; an opening 2 is provided on one side of the chassis 1, and rollers are installed at the bottom of the chassis 1. During use, it is movably installed on the track, and at the same time, the opening 2 corresponds to the drilling well, so that after moving to the corresponding position, the drill pipe can be rotated.

[0085] The column 3 is installed on the chassis 1. The column 3 is vertically installed, preferably two. When the subsequent upper clamp assembly and lower clamp assembly move vertically along it, two-point limit is carried out to ensure the stability of the movement.

[0086] The vertical guide rail 4 is installed on the column 3. The vertical guide rail 4 extends along the column 3 to provide a movement track. Specifically, it is a rack, which is convenient for the upper clamp assembly and the lower clamp assembly to perform lifting movements.

[0087] The lower clamp assembly 5 is sleeved on the column 3, and a lower working hole 6 is opened in the middle of the lower clamp assembly 5. The lower clamp assembly 5 moves up and down along the vertical guide rail 4.

[0088] The upper clamp assembly 7 is sleeved on the column 3, and the upper clamp assembly 7 is located above the lower clamp assembly 5. A lower working hole 6 is opened at the corresponding position between the upper clamp assembly 7 and the lower clamp assembly 5. The upper clamp assembly 7 moves up and down along the vertical guide rail 4. In this application, the upper clamp assembly 7 and the lower clamp assembly 5 perform actions such as clamping and rotating the drill pipe or pipeline through the working holes in the middle.

[0089] Regarding how the upper clamp assembly 7 and the lower clamp assembly 5 move along the vertical guide rail 4, further description is made. The upper clamp assembly 7 and the lower clamp assembly 5 in this application both include a lifting motor 9 and a lifting driving wheel 10. The lifting driving wheel 10 is installed at the output end of the lifting motor 9, and the lifting driving wheel 10 meshes with the vertical guide rail 4. When working, the lifting motor 9 starts to work, driving the lifting driving wheel 10 to rotate, so as to be able to move up and down along the vertical guide rail 4.

[0090] In order to ensure the stable operation of the upper clamp assembly 7, the upper clamp assembly in this application includes:

[0091] The upper clamp housing 701, an upper working hole 702 is opened in the middle of the upper clamp housing 701, and upper through holes 703 for the column 3 to pass through are opened at both ends of the upper clamp housing 701. The upper clamp housing 701 is a housing with an accommodating cavity, which is used to install other components.

[0092] The fitting unit 704 is installed on the upper working hole 702. The fitting unit 704 can select different structures according to the actual working conditions.

[0093] The upper clamping unit 705 is rotatably installed inside the upper clamp housing 701, and the clamping end of the upper clamping unit 705 faces the upper working hole 702.

[0094] The outer shell 706 is rotatably installed inside the upper clamping shell 701, and the upper clamping unit 705 is installed inside the outer shell 706. The outer shell 706 can also rotate around the upper working hole 702. When the braking unit is not working, the outer shell 706 does not move synchronously with the upper clamping unit 705. There is a rotating bearing that can ensure reduced damage during rotation;

[0095] The quick rotation unit 707 is arranged inside the outer shell 706, and the output end of the quick rotation unit 707 cooperates with the upper clamping unit 705. The quick rotation unit 707 can achieve the quick movement of the upper clamping unit 705, thereby completing the quick rotation action;

[0096] The braking unit 708 is arranged inside the outer shell 706, and the braking end of the braking unit 708 cooperates with the upper clamping unit 705;

[0097] The punching cylinder 709 has one end installed on the inner wall of the upper clamping shell 701 and the other end extending into the outer shell 706 and connecting with it.

[0098] Regarding the working mode of the upper clamping assembly 7 in this application, the upper clamping assembly 7 can achieve quick rotation operation and punching action. At the beginning, the drill pipe enters the upper working hole 702 of the upper clamping assembly 7. At this time, the upper clamping unit 705 clamps, and then the quick rotation unit 707 drives the upper clamping unit 705 to rotate quickly, thereby achieving the quick rotation action. After completing this action, the braking unit 708 starts to work, clamps the upper clamping unit 705, so that the upper clamping unit 705, the quick rotation unit 707 and the outer shell 706 move synchronously. Then the punching cylinder 709 starts to work. Because the piston rod end of the punching cylinder 709 is movably connected to the outer shell 706, this can drive the outer shell 706 to rotate, thereby driving the upper clamping unit 705 to rotate.

[0099] Among them, the upper clamping unit 705 in this application can be an existing structure, or it can include a clamping cylinder and a jaw plate. The jaw plate is arranged at the cylinder body end of the clamping cylinder. By using the movement of the piston rod end of the clamping cylinder, the cylinder body end moves towards the upper working hole 702 to complete the clamping action.

[0100] To ensure the stable operation of the upper clamping assembly 7, as Figure 4 shown, the quick rotation unit 707 includes:

[0101] The quick rotation motor 710 is installed inside the outer shell 706 in a vertical setting during installation;

[0102] The quick rotation driving wheel 711 is installed at the output end of the quick rotation motor 710, and its specific connection method is an existing method. When the quick rotation motor 710 works, the quick rotation driving wheel 711 starts to rotate stably;

[0103] The quick-rotation auxiliary wheel 712 is sleeved on the upper clamping unit 705, and the quick-rotation auxiliary wheel 712 meshes with the quick-rotation driving wheel 711. When the quick-rotation driving wheel 711 rotates, it can drive the quick-rotation auxiliary wheel 712 to start rotating. Since the quick-rotation auxiliary wheel 712 is connected to the upper clamping unit 705, synchronous movement can be achieved, so that the upper clamping unit 705 can drive the drill pipe to rotate;

[0104] The brake unit 708 includes;

[0105] A disc brake 713, which is used to brake the upper clamping unit, so that the quick-rotation unit and the upper clamping unit can form an integral body with synchronous movement;

[0106] A brake disc 726 is sleeved on the upper clamping unit 705, and the brake disc 726 cooperates with the braking end of the disc brake 713. The brake disc 726 is connected to the upper clamping unit 705. After the disc brake 713 works, the upper clamping unit 705 and the quick-rotation unit 707 can move synchronously.

[0107] Due to the operation of the impact-buckle hydraulic cylinder 709 in this application, torque will be generated between the upper tong assembly 7 and the lower tong assembly 5. Therefore, two pin shafts 8 are installed on the lower tong assembly 5 in this application. The top of the pin shaft 8 cooperates with the upper tong assembly 7 and can move up and down when cooperating with the upper tong assembly 7, so that the torque can be borne by the two pin columns.

[0108] The lower tong assembly in this application can be an existing mechanism or the following structure. Similarly, as Figure 3 、 5 shown, the lower tong assembly 5 includes:

[0109] A lower tong housing 501, a lower working hole 6 is opened in the middle of the lower tong housing 501, and lower through holes 502 for the column 3 to pass through are opened at both ends of the lower tong housing 501;

[0110] A lower clamping unit 503 is installed inside the lower tong housing 501, and the clamping end of the lower clamping unit 503 faces the lower working hole 6. Similarly, the lower clamping unit 503 in this application is similar to the upper clamping unit 705 and also includes a clamping oil cylinder, a jaw plate, etc., and can complete the clamping action;

[0111] A protection mechanism 504 is installed on the lower tong housing 501. The protection mechanism 504 seals the space between the upper and lower tongs to form a sealed space, prevents mud from overflowing, and discharges it to a designated position through the pipeline on the lower tong.

[0112] For further description of the protection mechanism 504, as Figure 5, 6 As shown, the protection mechanism 504 in this application includes:

[0113] A protection hydraulic cylinder 505, installed on the lower clamp housing 501. Preferably, the protection hydraulic cylinder 505 is vertically arranged, and there are four such protection hydraulic cylinders 505, arranged at intervals;

[0114] A protection ring 506, installed at the piston rod end of the protection hydraulic cylinder 505. The protection ring 506 wraps the lower clamping unit 503; at the same time, an annular groove is also formed on the lower clamp housing 501 to cooperate with the protection ring 506;

[0115] A protection folding cover 507, with one end connected to the protection ring 506 and the other end installed on the lower clamp housing 501; the bottom of the protection folding cover 507 in this application is inside the annular groove, and its top moves upward under the drive of the protection ring 506 until it reaches the top of the upper clamp housing 701. Preferably, a groove can also be opened at the bottom of the upper clamp housing 701 to facilitate stable cooperation with the protection folding cover 507.

[0116] For further description of the column 3 in this application, there are three columns 3 in this application. Among them, the vertical guide rails 4 are installed on two of the columns 3, that is, these two columns are respectively matched with the upper clamp assembly and the lower clamp assembly. An image recognition module 11 is installed on the remaining one column 3. The image recognition module 11 is an existing module, which is used to find the position of the drill pipe joint, and then move the make-up and break-out tongs of the iron roughneck to the specified position for making-up and breaking-out during tripping in and out.

[0117] In this application, the protection hydraulic cylinder 505 drives the protection folding cover 507 to seal the space between the upper and lower clamp assemblies, forming a sealed space to prevent mud from overflowing, and discharging it to the specified position through the pipeline on the lower clamp assembly.

[0118] In one embodiment, when used for connecting and screwing the drill pipe; as Figure 1 shown, the fitting unit 704 in this application includes:

[0119] A guide sleeve 714, arranged inside the upper working hole 702;

[0120] A water spray nozzle 715, installed on the guide sleeve 714. During use, the water spray nozzle 715 is used for spraying water to complete the cleaning operation. Preferably, there are three such water spray nozzles 715, arranged at intervals;

[0121] An oil spray nozzle 716, installed on the guide sleeve 714, and the oil spray nozzle 716 and the water spray nozzle 715 are arranged at intervals. During use, the oil spray nozzle 716 is used for applying thread compound. Similarly, preferably there are three, which can improve work efficiency;

[0122] The hydraulic hollow rotary joint 717 is installed at the bottom of the guide sleeve 714. This hydraulic hollow rotary joint 717 is an existing one that can solve the problem of supplying oil to the rotary chuck (cylinder).

[0123] In this application, the original two sets of pliers, namely the quick rotary buckle and the impact rotary buckle, are changed to one set to clamp the joint part of the drill pipe, which can more conveniently complete the processing work of the drill pipe.

[0124] In another embodiment, when used for the assembly of the casing, as Figure 7 , 8 shown, the fitting unit 704 in this application includes:

[0125] The chassis 718 is installed at the top of the upper clamp housing 701, and an assembly hole 719 that cooperates with the upper working hole 702 is provided in the middle of the chassis 718;

[0126] The auxiliary cylinder 722 is installed inside the assembly hole 719;

[0127] The climbing mechanism 720 is installed on the upper clamp assembly 7, and the climbing mechanism 720 is located inside the auxiliary cylinder 722. Specifically, it is installed on the upper clamping unit 705 and can rotate;

[0128] The climbing brake part 721 is installed on the chassis 718, and the climbing brake part 721 cooperates with the outer edge of the auxiliary cylinder 722, that is, the climbing brake part 721 can brake the auxiliary cylinder 722 to ensure the stability of clamping.

[0129] For further explanation of the climbing mechanism 720, the climbing mechanism 720 in this application is used to complete the clamping of the casing, and the casing has no joint end. Therefore, in order to avoid excessive clamping force on the casing, dynamic adjustment is achieved through the climbing mechanism; specifically as follows:

[0130] The inner wall of the auxiliary cylinder 722 is provided with a convex arc surface, which can ensure the rotation of the clamping plate to realize the clamping of the casing. Among them, the climbing mechanism 720 includes:

[0131] The climbing pin 723, which serves as a rotation point for the subsequent rotation of the clamping plate;

[0132] The clamping plate 724, one end of which is connected to the climbing pin 723. The clamping plate 724 can realize the clamping of the casing. Specifically, the inner wall of the clamping plate 724 is provided with a tooth plate;

[0133] The climbing wheel 725 is installed on one side of the clamping plate 724 facing the inner wall of the auxiliary cylinder 722, and the climbing wheel 725 is in contact with the inner wall of the clamping plate 724; when the climbing mechanism 720 rotates, the climbing wheel 725 moves along the inner wall of the auxiliary cylinder 722, causing the clamping plate 724 to move closer inward or outward, so that clamping can be completed. Preferably, there are two clamping plates 724.

[0134] Further description is made for this application:

[0135] This application is an orbital closed-type tong drill operator. Compared with the existing open-type drill operator, it can complete the assembly of drill pipes or casings more stably. In this application, the upper tong assembly 7 and the lower tong assembly 5 are designed, and the lifting motor 9 drives the lifting driving wheel 10 to rotate, so that the upper and lower tong assemblies can move along the vertical guide rail 4.

[0136] Among them, this application is provided with a nested structure inside the upper tong assembly, that is, the fast rotation unit 707 drives the upper clamping unit 705 to rotate quickly, and then the braking unit 708 completes braking, so that the upper clamping unit 705 and the fast rotation unit 707 can move synchronously, and then the impact buckle hydraulic cylinder 709 completes further tightening.

[0137] This application is provided with two pin shafts 8 on the lower tong assembly, and the torque of the upper and lower tongs can be borne through these pin shafts.

[0138] This application is also provided with a protection mechanism 504. Through the protection mechanism 504, the space between the upper and lower tongs can be sealed to form a sealed space to prevent mud from overflowing, and it is discharged to a designated position through the pipeline on the lower tong.

[0139] At the same time, this application also designs the fitting unit 704 to meet different needs of customers.

[0140] The working process of this application is as follows:

[0141] When assembling the drill pipe, the chassis 1 moves to the inlet, the lower tong assembly 5 completes the clamping action, the drill pipe enters from the upper working hole 702, the fitting unit performs flushing and applying thread oil, and then the upper clamping unit 705 completes clamping. At this time, the fast rotation unit 707 starts to work. After the drill pipe is quickly rotated, the braking unit 708 works, and then the impact buckle hydraulic cylinder 709 is used to achieve further rotation work.

[0142] Similarly, when assembling the casing, only the fitting unit 704 needs to be replaced to complete the climbing and clamping action. When assembling the casing, it should be noted that the clamping part of the upper clamping unit does not work, while the fast rotation part and other parts can start to work.

[0143] In the description of the present invention, a large number of specific details are set forth. However, it is understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail so as not to obscure the understanding of this description.

[0144] In the description of this specification, the descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0145] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention.

Claims

1. An orbital closed-type tong drill, characterized in that, Comprising: A chassis (1); an opening (2) is provided on one side of the chassis (1); A column (3), mounted on the chassis (1); A lower clamp assembly (5), sleeved on the column (3); An upper clamp assembly (7), sleeved on the column (3), and the upper clamp assembly (7) is located above the lower clamp assembly (5); The upper clamp assembly (7) includes: An upper clamp housing (701); An upper clamping unit (705), rotatably mounted inside the upper clamp housing (701); A housing (706), rotatably mounted inside the upper clamp housing (701), and the upper clamping unit (705) is installed inside the housing (706); A quick rotation unit (707), provided inside the housing (706), and the output end of the quick rotation unit (707) cooperates with the upper clamping unit (705); A brake unit (708), provided inside the housing (706), and the braking end of the brake unit (708) cooperates with the upper clamping unit (705); A punching buckle hydraulic cylinder (709), one end is mounted on the inner wall of the upper clamp housing (701), and the other end extends into the housing (706) and is connected to it; The lower clamp assembly (5) includes: A lower clamp housing (501); A protection mechanism (504), mounted on the lower clamp housing (501); the protection mechanism (504) includes: A protection hydraulic cylinder (505); A protection ring (506), mounted on the piston rod end of the protection hydraulic cylinder (505); A protection folding cover (507), one end is connected to the protection ring (506), and the other end is mounted on the lower clamp housing (501); A vertical guide rail (4), the vertical guide rail (4) is mounted on the column (3); Both the upper clamp assembly (7) and the lower clamp assembly (5) include a lifting motor (9) and a lifting driving wheel (10), the lifting driving wheel (10) is mounted on the output end of the lifting motor (9), and the lifting driving wheel (10) meshes with the vertical guide rail (4); An upper working hole (702) is provided at the corresponding position of the upper clamp assembly (7) and the lower clamp assembly (5), and the upper clamp assembly (7) moves up and down along the vertical guide rail (4). The upper clamp assembly (7) further includes a fitting unit (704), and the fitting unit (704) is mounted on the upper working hole (702); The quick rotation unit (707) includes: A quick rotation motor (710); A quick rotation driving wheel (711), mounted on the output end of the quick rotation motor (710); A quick rotation auxiliary wheel (712), sleeved on the upper clamping unit (705), and the quick rotation auxiliary wheel (712) meshes with the quick rotation driving wheel (711); The brake unit (708) includes; A disc brake (713); A brake disc (726), sleeved on the upper clamping unit (705), and the brake disc (726) cooperates with the braking end of the disc brake (713).

2. The orbital closed type tong-iron drillman according to claim 1, wherein, During operation, the fast rotation unit (707) performs a fast rotation movement. After completing the fast rotation action, the brake unit (708) brakes the upper clamping unit (705) so that the upper clamping unit (705) moves synchronously with the fast rotation unit (707) and the housing (706), and the punching cylinder (709) pulls the housing (706) to complete the punching action.

3. The orbital closed-type tong iron driller according to claim 2, wherein, Two pin shafts (8) are installed on the lower clamp assembly (5), and the tops of the pin shafts (8) are cooperatively connected with the upper clamp assembly (7).

4. The orbital closed-type tong iron driller according to claim 2, wherein, A lower working hole (6) is formed in the middle of the lower clamp housing (501), and lower through holes (502) for the columns (3) to pass through are formed at both ends of the lower clamp housing (501); The lower clamp assembly (5) further includes: A lower clamping unit (503) is installed inside the lower clamp housing (501), and the clamping end of the lower clamping unit (503) faces the lower working hole (6).

5. The orbital closed type tongs iron driller according to claim 4, characterized in that, There are three columns (3), and vertical guide rails (4) are installed on two of the columns (3), and an image recognition module is installed on the remaining one column (3).

6. The orbital closed-type tong-iron drill operator according to claim 1, wherein The fitting unit (704) includes: A guide sleeve (714); A water spray nozzle (715) is installed on the guide sleeve (714); An oil spray nozzle (716) is installed on the guide sleeve (714), and the oil spray nozzle (716) and the water spray nozzle (715) are arranged at intervals; A hydraulic hollow rotary joint (717) is installed at the bottom of the guide sleeve (714).

7. The orbital closed-type tong drill according to claim 1, characterized in that, The fitting unit (704) includes: A chassis (718) is installed on the top of the upper clamp housing (701), and an assembly hole (719) matching the upper working hole (702) is formed in the middle of the chassis (718); An auxiliary cylinder (722) is installed inside the assembly hole (719); A climbing mechanism (720) is installed on the upper clamp assembly (7), and the climbing mechanism (720) is located inside the auxiliary cylinder (722); A climbing brake part (721) is installed on the chassis (718), and the climbing brake part (721) cooperates with the outer edge of the auxiliary cylinder (722).

8. The orbital closed-type tong iron driller according to claim 7, characterized in that, The inner wall of the auxiliary cylinder (722) is provided with a convex arc surface; The climbing mechanism (720) includes: A climbing pin (723); A clamping plate (724), one end of which is connected to the climbing pin (723); A climbing wheel (725) is installed on the side of the clamping plate (724) facing the inner wall of the auxiliary cylinder (722), and the climbing wheel (725) contacts the inner wall of the clamping plate (724).

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