A device for automatic connection and rotation of drill pipes

Abstract

The utility model relates to the field of drill pipe, specifically relates to a kind of device that can automatically connect rod and control the rotation of drill pipe to complete connection.A kind of device for realizing the automatic connection and rotation of drill pipe, including vertical portal, upper holder and lower holder, lifting frame and the driving assembly for driving lifting frame to move up and down are provided on the vertical portal;Lifting frame is provided with rod connecting assembly and swing bar assembly, the rod connecting assembly is located at the top of lifting frame, swing bar assembly is located in the middle of lifting frame, upper holder is located at the bottom of lifting frame, and lower holder is located at the bottom of lifting frame.The utility model not only can automatically install drill pipe, but also can assist drill pipe to rotate in coal bunker, reduce manual participation, improve work efficiency, reduce labor intensity.

Description

Technical Field

[0001] This utility model relates to the field of drill pipes, specifically to a device that can automatically connect drill pipes and control the rotation of drill pipes after connection. Background Technology

[0002] In coal storage and transportation systems, coal bunkers, as critical storage nodes, directly impact production continuity due to their operational stability. Actual production has revealed that the fine coal in the bunker has a high content of coal dust, exhibiting significant binding force. Under certain humidity conditions, due to gravity, it gradually settles and compacts, and under compressive stress, the coal solidifies into lumps with a certain hardness. As the coal falls under its own weight, due to the binding properties of the granular material, some fine coal forms blockages and caking lumps on the inner wall and crossbeams. If these clinging coal lumps are not cleaned promptly, it will not only severely reduce the bunker's capacity but also, over time, the accumulation of fine coal can easily lead to spontaneous combustion, posing a significant safety hazard.

[0003] Currently, when observing or cleaning the inside of a coal bunker, workers, aided by safety ropes, enter the bunker to inspect the walls and determine if cleaning is necessary. Cleaning itself also requires workers to carry heavy water hoses, which is time-consuming and labor-intensive. Utility Model Content

[0004] The purpose of this invention is to provide a device for automatically connecting and rotating drill rods. The connecting rod assembly automatically connects the drill rods and places the nozzle or camera on the drill rods to be placed inside the coal bunker. With the help of the swing rod assembly, the inside of the coal bunker can be observed and cleaned.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A device for automatically connecting and rotating drill pipes includes a vertical gantry, an upper clamp, and a lower clamp. The vertical gantry is equipped with a lifting frame and a drive assembly for moving the lifting frame up and down. The lifting frame is equipped with a connecting rod assembly and a swing rod assembly. The connecting rod assembly is located at the top of the lifting frame, the swing rod assembly is located in the middle of the lifting frame, the upper clamp is located at the bottom of the lifting frame, and the lower clamp is located at the bottom of the lifting frame.

[0006] Furthermore, the rod connecting assembly includes a rod connecting motor, a universal joint coupling, and a rod connecting wrench. The rod connecting motor is located on the top plate of the lifting frame. The upper end of the universal joint coupling is connected to the rotating shaft of the rod connecting motor, and the lower end is connected to the rod connecting wrench used to connect the drill rod.

[0007] Furthermore, the swing arm assembly includes a swing cylinder, a support bearing, a sleeve, and a telescopic platform. The swing cylinder is connected to the support bearing, which is connected to the telescopic platform via a support. The telescopic platform is slidably connected in the lifting frame. The lower part of the support bearing is connected to the sleeve, and the swing cylinder drives the drill rod to rotate through the sleeve.

[0008] Furthermore, the drive assembly includes a lead screw motor, a lead screw, and a connecting seat. The lead screw motor is located at the bottom of the vertical gantry, the connecting seat is connected to the lifting frame and configured on the lead screw, the lead screw is rotatably connected to the middle of the vertical gantry, and the bottom of the lead screw is connected to the lead screw motor via a coupling.

[0009] Furthermore, the lifting frame is provided with a first slider on both sides, and the vertical gantry is provided with a first slide rail on both sides, with the first slider mounted on the first slide rail.

[0010] Furthermore, a second slider is provided at the bottom of the telescopic platform, and a second slide rail is provided on the lifting frame, with the second slider mounted on the second slide rail.

[0011] Furthermore, the upper clamp has the same structure as the lower clamp. The upper clamp includes a frame, a first telescopic cylinder, and a second telescopic cylinder. The first telescopic cylinder is located on one side of the frame, and the second telescopic cylinder is located on the other side of the frame. The second telescopic cylinder is connected to an adjusting handwheel for adjusting the extension length of the telescopic rod.

[0012] Furthermore, both the first and second telescopic cylinders are equipped with a pair of clamping plates. The clamping plates are fixed to the telescopic rods of the first and second telescopic cylinders by a connecting block. The two clamping plates are detachably connected to the connecting block, and a V-shaped groove is formed between the two clamping plates.

[0013] Furthermore, guide blocks are provided on both sides of the connecting block, and guide rods are provided on the frame, with the guide blocks positioned on the guide rods.

[0014] Furthermore, the lifting frame is provided with a clearance hole for the oil pipe to pass through.

[0015] Compared with the prior art, this utility model has the following advantages and beneficial effects: This invention features an automatic drill rod mounting assembly. After the drill rod is installed, an upper clamp holds it and, driven by a lifting frame, moves it downwards. Subsequently, a lower clamp holds the drill rod, and the upper clamp releases the drill rod, returning the lifting frame to the top of the vertical gantry for easy reinstallation. Through the coordinated action of the lifting frame and the mounting assembly, a camera or nozzle mounted on the bottom drill rod reaches a designated position inside the coal bunker. Upon reaching this position, to achieve comprehensive observation or cleaning of the coal bunker's inner wall, a swing arm assembly drives the drill rod to rotate, thus rotating the camera or nozzle. This invention not only automatically installs the drill rod but also assists in its rotation within the coal bunker, reducing manual intervention, improving work efficiency, and lowering labor intensity. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a device for automatically connecting and rotating drill pipes.

[0017] Figure 2 This is a schematic diagram of the connecting rod assembly and the swing rod assembly.

[0018] Figure 3 This is a schematic diagram of the driving component.

[0019] Figure 4 This is a schematic diagram of the upper clamp.

[0020] Figure 5 This is a diagram illustrating the adjustment of the handwheel. Detailed Implementation

[0021] like Figure 1 As shown, a device for automatically connecting and rotating drill rods includes a vertical gantry 1, an upper clamp 2, and a lower clamp 3. The vertical gantry 1 is equipped with a lifting frame 4 and a drive assembly for moving the lifting frame 4 up and down. The lifting frame 4 is equipped with a connecting rod assembly 41 and a swing rod assembly 42. The connecting rod assembly 41 is located at the top of the lifting frame 4, the swing rod assembly 42 is located in the middle of the lifting frame 4, the upper clamp 2 is located at the bottom of the lifting frame 4, and the lower clamp 3 is located at the bottom of the lifting frame 4. The connecting rod assembly 41 is used to connect multiple drill rods to form a long rod, and a nozzle or camera is installed at the bottom of the long rod. With the help of the long rod, the nozzle or camera reaches a designated depth inside the coal bunker. Furthermore, to improve the flexibility of the nozzle or camera and enable comprehensive observation and cleaning of the inside of the coal bunker, the swing rod assembly 42 drives the long rod to rotate, helping the nozzle or camera to rotate within a 360° range, achieving comprehensive observation of the inside of the coal bunker or the purpose of cleaning the inside of the coal bunker.

[0022] This invention uses a lower clamp 3 to hold the already installed long rod, and places the drill rod to be installed on the connecting rod assembly 41. The connecting rod assembly 41 rotates the drill rod, allowing the drill rod to be threaded onto the already installed long rod. After installation, the upper clamp 2 holds the long rod, and the lifting frame 4 moves the installed long rod downwards. After the movement is complete, the lower clamp 3 clamps the long rod, the upper clamp 2 releases the long rod, and the lifting frame 4 returns the upper clamp 2 to its original position for the installation of the next drill rod. By repeating the above steps, the length of the long rod can be changed until the nozzle or camera reaches the designated position, eliminating the need for additional drill rods.

[0023] like Figure 2 As shown, the connecting rod assembly 41 includes a connecting rod motor 411, a universal joint coupling 412, and a connecting rod wrench 413. The connecting rod motor 411 is located on the top plate of the lifting frame 4. The upper end of the universal joint coupling 412 is connected to the rotating shaft of the connecting rod motor 411, and the lower end is connected to the connecting rod wrench 413 for connecting the drill rod. The drill rod that needs to be connected to the long rod is connected to the connecting rod wrench 413. The connecting rod motor 411 drives the drill rod to rotate relative to the long rod, creating a speed difference between the drill rod and the long rod, ultimately causing the drill rod to be threaded onto the long rod, allowing the nozzle to reach the specified depth in the coal bunker. The function of the extension motor 411 is to drive the rod to be connected to rotate during the extension process; and the extension wrench 413 has a U-shaped internal hexagonal cross section, and its main function during the extension process is to transmit torque, drive the rod to be connected to rotate and tighten; during the tightening process, due to operational errors, problems such as the extension motor 411 and the rod to be connected not being coaxial may occur. Therefore, a universal joint coupling 412 is installed between the extension motor 411 and the extension wrench 413 to compensate for operational errors.

[0024] The swing arm assembly 42 includes a swing cylinder 421, a support bearing 422, a sleeve 423, and a telescopic platform 424. The swing cylinder 421 is connected to the support bearing 422, which is connected to the telescopic platform 424 via a support. The telescopic platform 424 is slidably connected to the lifting frame 4. The lower part of the support bearing 422 is connected to the sleeve 423, and the swing cylinder 421 drives the drill rod to rotate through the sleeve 423. A second slider 425 is provided at the bottom of the telescopic platform 424, and a second slide rail 426 is provided on the lifting frame 4. The second slider 425 is mounted on the second slide rail 426. When the nozzle or camera on the drill rod needs to move circumferentially, the technician pulls the telescopic platform 424 outward, and with the help of the upper clamp 2, the long rod is engaged in the sleeve 423. Furthermore, the swing cylinder 421 lifts the extension wrench 413, causing the extension wrench 413 to rotate under the action of the universal joint coupling 412, preventing interference between the swing cylinder 421 and the extension wrench 413. The swing cylinder 421 drives the support bearing 422 to rotate, and the support bearing 422 drives the long rod connected to the sleeve 423 to rotate in the circumferential direction, realizing the purpose of the long rod assisting the nozzle or camera to rotate in the coal bunker.

[0025] like Figure 3 As shown, the drive assembly includes a lead screw motor 51, a lead screw 52, ​​and a connecting seat 53. The lead screw motor 51 is located at the bottom of the vertical gantry 1. The connecting seat 53 is connected to the lifting frame 4 and configured on the lead screw 52. The lead screw 52 is rotatably connected to the middle of the vertical gantry 1, and the bottom of the lead screw 52 is connected to the lead screw motor 51 via a coupling. The lifting frame 4 has a first slider 54 on both sides, and the vertical gantry 1 has a first slide rail 55 on both sides. The first slider 54 is mounted on the first slide rail 55. The lifting frame 4 has a clearance hole 56 for the passage of oil pipes. The lead screw motor 51 provides power to the lifting frame 4, causing the lifting frame 4 to move relative to the vertical gantry 1. This allows a long rod to enter or be pulled out of the coal bunker. The lifting frame 4 is controlled by the lead screw 52, ​​which is driven by a vertically mounted lead screw motor 51. The vertical gantry 1 is equipped with cylindrical smooth rods and vertical first slide rails 55 on both sides, so that the lifting frame 4 can maintain stable operation during operation and avoid the screw 52 transmission jamming due to shaking and tilting.

[0026] like Figure 4 and Figure 5As shown, the upper clamp 2 and the lower clamp 3 have the same structure. The upper clamp 2 includes a frame 21, a first telescopic cylinder 22, and a second telescopic cylinder 23. The first telescopic cylinder 22 is located on one side of the frame 21, and the second telescopic cylinder 23 is located on the other side of the frame 21. The second telescopic cylinder 23 is connected to an adjusting handwheel 24 for adjusting the extension length of the telescopic rod. Both the first telescopic cylinder 22 and the second telescopic cylinder 23 are provided with a pair of clamping plates 25. The clamping plates 25 are fixed to the telescopic rods of the first telescopic cylinder 22 and the second telescopic cylinder 23 by connecting blocks 26. The two clamping plates 25 are detachably connected to the connecting blocks 26, and a V-shaped groove is formed between the two clamping plates 25. Guide blocks 27 are respectively provided on both sides of the connecting blocks 26, and guide rods 28 are provided on the frame 21. The guide blocks 27 are disposed on the guide rods 28. Before connecting the drill rod, adjust the maximum extension length of the telescopic rod of the second telescopic cylinder 23 by adjusting the handwheel 245 according to the diameter of the drill rod. After adjusting the length of the second telescopic rod of the second telescopic cylinder 23, keep the length constant so that the first telescopic cylinder 22 pushes the clamping plate 25, which, together with the second telescopic cylinder 23, clamps and connects the drill rod to the connecting rod wrench 413. The center line of the drill rod connected to the connecting rod wrench 413 coincides with the center line of the long rod held by the lower clamp 3. After the drill rod is connected to the connecting rod wrench 413, the drill rod will be clamped in the V-shaped groove between the clamping plates 25 by the action of the clamping plates 25 of the first telescopic cylinder 22, so that the center line of the drill rod connected to the connecting rod wrench 413 coincides with the center line of the long rod held by the lower clamp 3.

[0027] The V-groove enhances the compatibility of the clamping device with rods of different diameters and specifications. During the extension of the first telescopic cylinder 22 to clamp the drill rod, under the bidirectional clamping action of the clamping plate 25, the rod is automatically guided to the center position of the V-groove formed by the clamping plate 25, thus achieving a self-centering effect. Self-centering means that under external force, the drill rod can quickly achieve centering using symmetrically arranged clamping ramps, without additional manual adjustment. This structural design fully utilizes the principle of symmetrical distribution of clamping force, forcing the drill rod to align along the center point under the combined action of two force points, thereby achieving rapid and accurate positioning. For example, when clamping thinner rods, the V-groove achieves positioning through a smaller contact angle, while when clamping thicker rods, the jaws maintain a stable centering effect even at a larger contact angle. Through the cooperation between the symmetrically designed clamping plates 25, the center lines of the uninstalled drill rod and the installed drill rod are aligned, so that the center lines of the drill rod are aligned when the drill rod is clamped, thus enabling the drill rod to automatically center. Automatic centering of the drill rod not only makes the clamping of the drill rod more stable, but also significantly reduces the labor intensity of the workers.

[0028] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A device for automatically connecting and rotating drill pipes, characterized in that, It includes a vertical gantry, an upper clamp, and a lower clamp. The vertical gantry is equipped with a lifting frame and a drive assembly for driving the lifting frame to move up and down. The lifting frame is equipped with a connecting rod assembly and a swing rod assembly. The connecting rod assembly is located at the top of the lifting frame, the swing rod assembly is located in the middle of the lifting frame, the upper clamp is located at the bottom of the lifting frame, and the lower clamp is located at the bottom of the lifting frame.

2. The device for automatically connecting and rotating drill pipe according to claim 1, characterized in that, The rod extension assembly includes a rod extension motor, a universal joint coupling, and a rod extension wrench. The rod extension motor is located on the top plate of the lifting frame. The upper end of the universal joint coupling is connected to the rotating shaft of the rod extension motor, and the lower end is connected to the rod extension wrench used to connect the drill rod.

3. The device for automatically connecting and rotating drill pipe according to claim 1, characterized in that, The swing arm assembly includes a swing cylinder, a support bearing, a sleeve, and a telescopic platform. The swing cylinder is connected to the support bearing, which is connected to the telescopic platform via a support. The telescopic platform is slidably connected in the lifting frame. The lower part of the support bearing is connected to the sleeve, and the swing cylinder drives the drill rod to rotate through the sleeve.

4. The device for automatically connecting and rotating drill pipe according to claim 1, characterized in that, The drive assembly includes a lead screw motor, a lead screw, and a connecting seat. The lead screw motor is located at the bottom of the vertical gantry. The connecting seat is connected to the lifting frame and configured on the lead screw. The lead screw is rotatably connected to the middle of the vertical gantry. The bottom of the lead screw is connected to the lead screw motor via a coupling.

5. The device for automatically connecting and rotating drill pipe according to claim 1, characterized in that, The lifting frame is provided with a first slider on both sides, and the vertical gantry is provided with a first slide rail on both sides, with the first slider mounted on the first slide rail.

6. The device for automatically connecting and rotating drill pipe according to claim 3, characterized in that, The telescopic platform is equipped with a second slider at its bottom, and a second slide rail is provided on the lifting frame, with the second slider mounted on the second slide rail.

7. The device for automatically connecting and rotating drill pipe according to claim 1, characterized in that, The upper clamp and the lower clamp have the same structure. The upper clamp includes a frame, a first telescopic cylinder and a second telescopic cylinder. The first telescopic cylinder is located on one side of the frame and the second telescopic cylinder is located on the other side of the frame. The second telescopic cylinder is connected to an adjusting handwheel for adjusting the extension length of the telescopic rod.

8. The device for automatically connecting and rotating drill pipe according to claim 7, characterized in that, Both the first and second telescopic cylinders are equipped with a pair of clamping plates. The clamping plates are fixed to the telescopic rods of the first and second telescopic cylinders by a connecting block. The two clamping plates are detachably connected to the connecting block, and a V-shaped groove is formed between the two clamping plates.

9. The device for automatically connecting and rotating drill pipe according to claim 8, characterized in that, Guide blocks are provided on both sides of the connecting block, and guide rods are provided on the frame, with the guide blocks positioned on the guide rods.

10. The device for automatically connecting and rotating drill pipe according to claim 1, characterized in that, The lifting frame is provided with clearance holes for the passage of oil pipes.

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