Friction welding device for petroleum drill rod

Abstract

The utility model relates to the technical field of friction welding machines, and provides a petroleum drill pipe friction welding device which comprises a base and a pair of side frames, the side frames are arranged on the base, a synchronous supporting assembly is arranged on the base and the side frames, a fixed rotating assembly is arranged on the side frames and comprises a fixed sleeve frame, and the fixed sleeve frame is fixed to the bottoms of the side frames. A rotating seat is rotationally connected into the fixing sleeve frame, an outer gear is arranged outside the rotating seat, a bottom opening is formed in the bottom of the fixing sleeve frame, and a bottom frame is fixedly connected to the side surface of the side frame. According to the technical scheme, the problems that in the prior art, the structure of a workpiece clamping and working mechanism of a large-tonnage friction welding machine does not break through a traditional structural form, the workpiece clamping and working mechanism is not compact, the clamping precision is low, the efficiency is low, the operation precision of the working mechanism is low, the loading and unloading mode is complex, synchronous butt joint connection cannot be achieved, and machining and using are not facilitated are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of friction welding machines, in particular to a friction welding device for a petroleum drill pipe. Background Art

[0002] Drill pipe is a steel pipe with a threaded tail, which is used to connect the surface equipment of the drilling rig to the drilling and grinding equipment or bottom hole device at the bottom of the well. The purpose of the drill pipe is to transport drilling mud to the drill bit and raise, lower or rotate the bottom hole device together with the drill bit. The drill pipe must be able to withstand huge internal and external pressure, twisting, bending and vibration. In the process of oil and gas extraction and refining, the drill pipe can be used many times. The drill pipe is divided into three categories: square drill pipe, drill pipe and heavy drill pipe. Welding is required during the processing of the drill pipe.

[0003] At present, the workpiece clamping and working mechanism structure of large-tonnage friction welding machines have not broken through the traditional structural form. They are not compact, have low clamping accuracy and low efficiency, low operating accuracy of the working mechanism, and complex loading and unloading methods. They cannot be synchronously docked and connected, which is not conducive to processing and use.

[0004] Therefore, improvements are made to address the above problems. Utility Model Content

[0005] The utility model provides a friction welding device for oil drill pipes, which solves the problems in the related art that the workpiece clamping and working mechanism structure of large-tonnage friction welding machines have not broken through the traditional structural form, are not compact, have low clamping accuracy and low efficiency, have low operating accuracy of the working mechanism, are relatively complicated in loading and unloading methods, cannot be synchronously docked and connected, and are not conducive to processing and use.

[0006] The technical solution of the utility model is as follows:

[0007] A base and a pair of side frames, wherein the side frames are arranged on the base;

[0008] A synchronous support assembly, wherein the synchronous support assembly is arranged on the base and the side frame;

[0009] A fixed rotating assembly is arranged on the side frame, and the fixed rotating assembly includes a fixed sleeve frame, which is fixed to the bottom of the side frame, a rotating seat is rotatably connected inside the fixed sleeve frame, an external gear is arranged outside the rotating seat, a bottom opening is opened at the bottom of the fixed sleeve frame, and a base frame is fixedly connected to the side surface of the side frame.

[0010] As a further technical solution, a driving motor is installed on the base frame, a driving gear is provided at the output end of the driving motor, the driving gear is meshed with the external gear, a plurality of extension columns are fixedly connected to the outer surface of the rotating seat, and one end of the extension column is fixedly connected to a mounting frame.

[0011] As a further technical solution, the outer surface of the mounting frame is rotatably connected to a plurality of fastening screws, the outside of the fastening screws is connected to a fixing claw via a threaded sleeve, the fixing claw is slidingly fitted with the inner surface of the mounting frame, and a coaxial sleeve is installed on the side surface of the side frame.

[0012] As a further technical solution, the synchronous support assembly includes a plurality of bottom grooves, which are opened on the surface of the base, in which a synchronous screw is rotatably connected, in which a movable platform is slidably connected, and the movable platform is connected to the synchronous screw by threaded fitting.

[0013] As a further technical solution, the moving platform is fixedly connected to the bottom of the side frame, a second motor is arranged on the surface of the base, and transmission gears are arranged on the output end of the second motor and the synchronous screw, and the transmission gears are meshed with each other.

[0014] As a further technical solution, a support seat is provided on the top of the side frame, a stabilizing column is interactively connected inside the support seat, limiting layers are provided at both ends of the stabilizing column, and springs are installed at both ends of the stabilizing column.

[0015] As a further technical solution, the synchronous screw adopts a double-end thread structure, and the thread directions at both ends of the synchronous screw are respectively a positive helix and a negative helix.

[0016] As a further technical solution, the surface of the fixing claw is provided with an anti-wear and anti-skid convex layer.

[0017] The working principle and beneficial effects of the utility model are:

[0018] 1. The utility model is provided with a fixed rotating assembly. Through the interaction of structures such as a fixed sleeve, a rotating seat, an external gear, a driving gear, a mounting frame and a fixed claw, the drill rod can be passed through and clamped and fixed, and the coaxial position and high-speed rotation effect can be maintained. Friction welding can be performed under high-speed rotation, and after completion, it can be pulled out to one side to be detached. The loading and unloading method is simple and convenient, the firm effect is good, and it has a good use effect and practicality.

[0019] 2. The utility model is provided with a synchronous support assembly, which can control the synchronous movement of two side frames after the drill rods are installed through the interaction of structures such as synchronous screws, moving platforms, transmission gears, stabilizing columns and springs, and can shorten the distance for docking, and achieve a stable friction welding effect with rotation, which has good stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 This is an axonometric sectional view of the utility model;

[0023] Figure 3 For the utility model Figure 2 A partial enlarged view of part A;

[0024] In the figure: 1. base; 2. side frame; 3. fixed rotating assembly; 3-1. fixed sleeve frame; 3-2. rotating seat; 3-3. external gear; 3-4. bottom opening; 3-5. base frame; 3-6. driving motor; 3-7. driving gear; 3-8. extension column; 3-9. mounting frame; 3-10. fastening screw; 3-11. fixing claw; 3-12. coaxial sleeve; 4. synchronous support assembly; 4-1. bottom groove; 4-2. synchronous lead screw; 4-3. moving platform; 4-4. second motor; 4-5. transmission gear; 4-6. supporting seat; 4-7. stabilizing column; 4-8. limiting layer; 4-9. spring; 5. anti-wear and anti-skid convex layer. DETAILED DESCRIPTION

[0025] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figure 1~Figure 3 As shown, this embodiment provides a friction welding device for oil drill pipe, comprising

[0027] A base 1 and a pair of side frames 2, wherein the side frames 2 are arranged on the base 1;

[0028] A synchronous support assembly 4, wherein the synchronous support assembly 4 is arranged on the base 1 and the side frame 2;

[0029] The fixed rotating assembly 3 is arranged on the side frame 2. The fixed rotating assembly 3 includes a fixed sleeve 3-1, which is fixed to the bottom of the side frame 2. The fixed sleeve 3-1 is rotatably connected with a rotating seat 3-2. The rotating seat 3-2 is provided with an external gear 3-3. The bottom of the fixed sleeve 3-1 is provided with a bottom opening 3-4. The side surface of the side frame 2 is fixedly connected with a bottom frame 3-5. A driving motor 3-6 is installed on the bottom frame 3-5. The output end of the driving motor 3-6 is provided with a driving Gear 3-7, driving gear 3-7 is meshed with external gear 3-3, the outer surface of rotating seat 3-2 is fixedly connected with a plurality of extension columns 3-8, one end of extension column 3-8 is fixedly connected with mounting frame 3-9, the outer surface of mounting frame 3-9 is rotatably connected with a plurality of fastening screws 3-10, the outside of fastening screw 3-10 is connected with fixing claw 3-11 through threaded sleeve, fixing claw 3-11 is slidably fitted with the inner surface of mounting frame 3-9, and the side surface of side frame 2 is installed with coaxial sleeve 3-12.

[0030] In this embodiment, in order to achieve the effect of coaxially fixing and rotating the shaft, a fixed rotating assembly 3 is designed. A hollow fixed sleeve 3-1 is provided at the bottom of the side frame 2. A rotating seat 3-2 is rotatably connected inside the fixed sleeve 3-1. An external gear 3-3 is provided on the outside of the rotating seat 3-2. A bottom opening 3-4 is provided at the bottom of the fixed sleeve 3-1. A bottom frame 3-5 is provided on the side surface of the side frame 2. A driving motor 3-6 is installed on the bottom frame 3-5. A driving gear 3-7 is provided at the output end of the driving motor 3-6. The top of the moving gear 3-7 passes through the bottom opening 3-4 and meshes with the external gear 3-3. The driving motor 3-6 can provide power to rotate the rotating seat 3-2. An extension column 3-8 is provided on the surface of the rotating seat 3-2 and is fixedly connected to a mounting frame 3-9. The surface of the mounting frame 3-9 is rotatably connected to several fastening screws 3-10. Each fastening screw 3-10 is connected to a fixing claw 3-11 by threaded cooperation. The downward movement can be controlled by the fastening screw 3-10 to clamp the drill pipe. After coaxial fixation, it can rotate at high speed.

[0031] Furthermore, the synchronous support assembly 4 includes a plurality of bottom grooves 4-1, the bottom grooves 4-1 are opened on the surface of the base 1, a synchronous screw 4-2 is rotatably connected in the bottom groove 4-1, a moving platform 4-3 is slidably connected in the bottom groove 4-1, the moving platform 4-3 is connected to the synchronous screw 4-2 by threaded cooperation, the moving platform 4-3 is fixedly connected to the bottom of the side frame 2, a second motor 4-4 is arranged on the surface of the base 1, a transmission gear 4-5 is arranged on the output end of the second motor 4-4 and the synchronous screw 4-2, the transmission gears 4-5 are meshed with each other, a support seat 4-6 is arranged on the top of the side frame 2, a stabilizing column 4-7 is interactively connected in the support seat 4-6, a limiting layer 4-8 is arranged at both ends of the stabilizing column 4-7, and a spring 4-9 is installed at both ends of the stabilizing column.

[0032] In this embodiment, in order to achieve the effect of synchronous movement of the two side frames 2 for butt friction welding, a synchronous support assembly 4 is designed, and a plurality of bottom grooves 4-1 are opened on the surface of the base 1, and a synchronous screw 4-2 is rotatably connected in the bottom groove 4-1, and a moving platform 4-3 is connected to the outside of the synchronous screw 4-2 by threaded cooperation, and the moving platform 4-3 is fixedly connected to the bottom of the side frame 2, and the two moving platforms 4-3 can be driven to move synchronously by the synchronous screw 4-2, and a second motor 4-4 is installed on the base 1, and a transmission gear 4-5 is provided on the output end of the second motor 4-4 and the synchronous screw 4-2, and the transmission gears 4-5 are meshed with each other, and the synchronous screw 4-2 is driven to rotate by the second motor 4-4, and a support seat 4-6 is provided on the top of the side frame 2, and a stabilizing column 4-7 is installed in the support seat 4-6, and springs 4-9 are installed at both ends of the fixed column, and the stabilizing column is used to connect the two side frames 2 to improve the stabilizing effect.

[0033] Furthermore, the synchronous screw 4-2 adopts a double-end thread structure, and the thread directions at both ends of the synchronous screw 4-2 are positive helix and negative helix respectively.

[0034] In this embodiment, the synchronous screw 4-2 can control the synchronous movement of the two moving platforms 4-3 through the structure of the positive spiral and the reverse spiral.

[0035] Furthermore, the surface of the fixing claw 3 - 11 is provided with an anti-wear and anti-skid convex layer 5 .

[0036] In this embodiment, the anti-wear and anti-skid convex layer 5 is added to fit the surface of the drill rod, thereby improving the firmness and avoiding abrasion of the drill rod surface.

[0037] When welding is required, the drill rod is inserted into the coaxial sleeves 3-12 on both sides respectively, and then inserted into the mounting frame 3-9, and the fastening screw 3-10 is turned to make the fixing claw 3-11 clamp the drill rod, and then the driving motor 3-6 is started to make the driving gear 3-7 drive the outer gear 3-3 to rotate at high speed, and then the second motor 4-4 is started to make the synchronous screw 4-2 rotate to control the movement of the two moving platforms 4-3, so that the drill rod is close and docked, and it stops after the welding is complete, and then it can be pulled out horizontally.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A friction welding device for oil drill pipe, characterized in that: include A base (1) and a pair of side frames (2), wherein the side frames (2) are arranged on the base (1); A synchronous support assembly (4), wherein the synchronous support assembly (4) is arranged on the base (1) and the side frame (2); A fixed rotating assembly (3), the fixed rotating assembly (3) is arranged on the side frame (2), the fixed rotating assembly (3) comprises a fixed sleeve (3-1), the fixed sleeve (3-1) is fixed to the bottom of the side frame (2), a rotating seat (3-2) is rotatably connected inside the fixed sleeve (3-1), an external gear (3-3) is arranged outside the rotating seat (3-2), a bottom opening (3-4) is opened at the bottom of the fixed sleeve (3-1), and a bottom frame (3-5) is fixedly connected to the side surface of the side frame (2).

2. A friction welding device for oil drill pipe according to claim 1, characterized in that: A driving motor (3-6) is installed on the base frame (3-5); a driving gear (3-7) is provided at the output end of the driving motor (3-6); the driving gear (3-7) is meshed with the external gear (3-3); a plurality of extension columns (3-8) are fixedly connected to the outer surface of the rotating seat (3-2); one end of the extension column (3-8) is fixedly connected to a mounting frame (3-9).

3. The friction welding device for oil drill pipe according to claim 2, characterized in that: The outer surface of the mounting frame (3-9) is rotatably connected to a plurality of tightening screws (3-10), the outside of the tightening screws (3-10) is connected to a fixing claw (3-11) through a threaded sleeve, the fixing claw (3-11) is slidably fitted to the inner surface of the mounting frame (3-9), and a coaxial sleeve (3-12) is installed on the side surface of the side frame (2).

4. The friction welding device for oil drill pipe according to claim 1, characterized in that: The synchronous support assembly (4) comprises a plurality of bottom grooves (4-1), wherein the bottom grooves (4-1) are provided on the surface of the base (1), a synchronous screw (4-2) is rotatably connected in the bottom grooves (4-1), a moving platform (4-3) is slidably connected in the bottom grooves (4-1), and the moving platform (4-3) is connected to the synchronous screw (4-2) by threaded engagement.

5. The oil drill pipe friction welding device according to claim 4, characterized in that: The moving platform (4-3) is fixedly connected to the bottom of the side frame (2); a second motor (4-4) is arranged on the surface of the base (1); a transmission gear (4-5) is arranged on the output end of the second motor (4-4) and the synchronous lead screw (4-2); and the transmission gears (4-5) are meshed with each other.

6. The friction welding device for oil drill pipe according to claim 5, characterized in that: A support seat (4-6) is arranged on the top of the side frame (2), a stabilizing column (4-7) is interactively sleeved and connected inside the support seat (4-6), limiting layers (4-8) are arranged at both ends of the stabilizing column (4-7), and springs (4-9) are sleeved and connected at both ends of the stabilizing column.

7. The oil drill pipe friction welding device according to claim 4, characterized in that: The synchronous lead screw (4-2) adopts a double-end thread structure, and the thread directions of the two ends of the synchronous lead screw (4-2) are respectively a positive helix and a negative helix.

8. The oil drill pipe friction welding device according to claim 3, characterized in that: The surface of the fixing claw (3-11) is provided with an anti-wear and anti-skid convex layer (5).

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