Dual-motor dual-drive pipeline plugging device

Abstract

According to the dual-motor dual-drive pipeline plugging device, a plugging mechanism comprises a plugging motor, a moving ring, a baffle ring and a plurality of soft sealing sleeves, and in the rotation process of the plugging motor, the moving ring is driven by a first transmission assembly to move towards the baffle ring and extrude the soft sealing sleeves so that the soft sealing sleeves can expand in the radial direction; the expanded soft sealing sleeve abuts against the inner wall of the pipeline, and the plugging process is completed; the anchoring mechanism comprises an anchoring motor, a pushing bowl and a plurality of anchoring slips, in the rotating process of the anchoring motor, a second transmission assembly drives the pushing bowl to jack up the anchoring slips until the anchoring slips abut against the inner wall of the pipeline, and the anchoring state is achieved; the sealing effect of the soft sealing sleeve is ensured under the condition that smooth opening and closing of the anchoring slip are ensured through hierarchical control over the plugging motor and the anchoring motor; and more accurate anchoring is achieved through the anchoring slips, damage to the inner wall of the pipeline is effectively reduced, and the situation of anchoring failure is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline plugging, and particularly to a pipeline plugging device with dual motors and dual drives. Background Art

[0002] Pipeline transportation, together with waterway transportation, railway transportation, air transportation, and road transportation, has become one of the five major transportation modes in the world. With its unique transportation method, pipeline transportation has penetrated into various contemporary industries and is playing an increasingly important role in the national economy. Pipeline transportation mainly covers the transportation of natural gas, oil, etc. As the service life of pipelines increases, problems such as pipeline corrosion, wax deposition, and crack expansion gradually become prominent. To ensure the safety of transportation, the emergency repair and daily maintenance of pipelines are crucial.

[0003] During the repair process, it is necessary to isolate the high-pressure medium inside the pipeline. Therefore, pipeline plugging devices have emerged as the times require. However, the pipeline plugging devices in the prior art use a single power source to drive the pipeline plugging device to achieve plugging and anchoring behaviors, and there are problems such as inaccurate braking position, unseating failure, and anchoring crushing. Summary of the Invention

[0004] To solve the problem of the prior art that the pipeline plugging device uses a single power source, the present invention provides a pipeline plugging device with dual motors and dual drives, which realizes the hierarchical drive of the anchoring slip and the soft sealing sleeve, improves the control accuracy of the pipeline plugging device, and specially sets the power and transmission components for each process to better ensure the reliable operation of each process.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: a pipeline plugging device with dual motors and dual drives, including an installation cylinder, on which a plugging mechanism and an anchoring mechanism are provided; The plugging mechanism includes a plugging motor, a moving ring, a partition ring, and a plurality of soft sealing sleeves. The plugging motor is arranged inside the installation cylinder, the moving ring and the soft sealing sleeves are both movably sleeved outside the installation cylinder, the partition ring is fixedly sleeved on the installation cylinder, the plugging motor is connected to the moving ring through a first transmission component, and during the rotation of the plugging motor, the moving ring is driven by the first transmission component to move towards the partition ring and squeeze the soft sealing sleeves to expand radially; The anchoring mechanism includes an anchoring motor, a pushing bowl, and several anchoring slips. The anchoring motor is arranged inside the installation cylinder, the pushing bowl is movably sleeved on the installation cylinder, the anchoring motor is connected to the pushing bowl through a second transmission component, the anchoring slips are distributed along the circumferential direction of the installation cylinder and are movably connected to the installation cylinder, and during the rotation of the anchoring motor, the second transmission component drives the pushing bowl to lift the anchoring slips until the anchoring slips are pressed tightly against the inner wall of the pipeline.

[0006] As a further optimization of the invention of a pipe plugging device with double motors and double drives: A fixed ring is fixedly sleeved on the installation cylinder. One end of the anchoring slip is rotatably connected to the fixed ring through a connecting member, and the other end of the anchoring slip is rotatably connected to the pushing bowl through a connecting pin.

[0007] As a further optimization of the invention of a pipe plugging device with double motors and double drives: The connecting member includes a anti - detachment part and a connecting part fixedly connected, and the anti - detachment part and the connecting part are perpendicular to each other. A plugging slot for accommodating the anti - detachment part is opened on the fixed ring, a through - slot for the connecting part to pass through is opened at the bottom of the plugging slot, and the part of the connecting part extending out of the through - slot is rotatably connected to the anchoring slip. The pushing bowl includes a mounting part and a pushing part fixedly connected. The mounting part is connected to the second transmission assembly, and the pushing part is rotatably connected to the other end of the anchoring slip through a connecting pin.

[0008] As a further optimization of the invention of a pipe plugging device with double motors and double drives: The inner side wall of the anchoring slip is provided with a first conical surface, and the pushing part is provided with a second conical surface. When the pushing part pushes the connecting pin to move, the first conical surface and the second conical surface can come into contact.

[0009] As a further optimization of the invention of a pipe plugging device with double motors and double drives: The first transmission assembly includes a first lead screw, a mounting ring and at least one mounting rod. The first lead screw is fixedly connected to the first output shaft of the plugging motor. The mounting ring is connected to the first lead screw through a first ball nut. The mounting rod is fixedly arranged on the surface of the mounting ring, and the mounting rod extends along the radial direction of the installation cylinder. A first slideway for the mounting rod to pass through is opened on the surface of the installation cylinder, and the first slideway extends along the axial direction of the installation cylinder. After passing through the first slideway, the mounting rod is fixedly connected to the inner wall of the moving ring. The second transmission assembly includes a second lead screw, a collar and at least one extension rod. The second lead screw is fixedly connected to the second output shaft of the anchoring motor. The collar is connected to the second lead screw through a second ball nut. The extension rod is fixedly arranged on the surface of the collar. A second slideway for the extension rod to pass through is opened on the surface of the installation cylinder, and the second slideway extends along the axial direction of the installation cylinder. After passing through the second slideway, the extension rod is fixedly connected to the inner wall of the pushing bowl.

[0010] As a further optimization of the invention of a pipe plugging device with double motors and double drives: One end of the installation cylinder is provided with a closing disc. The first transmission assembly includes a self - locking structure. The self - locking structure includes a first connecting rod and a second connecting rod. The first connecting rod is fixedly connected to the end of the mounting ring, and the second connecting rod is fixedly connected to the inner surface of the closing disc. A first buckle is arranged at the bottom of the first connecting rod, and a second buckle is arranged at the top of the second connecting rod. During the movement of the mounting ring on the first lead screw, the first buckle and the second buckle can be buckled or separated from each other.

[0011] As a further optimization of the invention of a pipeline plugging device with dual motors and dual drives: an installation shaft is coaxially connected to the surface of the closing disk outside the installation cylinder, a hub frame is fixedly sleeved on the installation shaft, a plurality of rotating wheels are rotatably arranged along the circumferential direction of the hub frame, and the rotating direction of the rotating wheels is the same as the moving direction of the installation cylinder.

[0012] As a further optimization of the invention of a pipeline plugging device with dual motors and dual drives: a plurality of installation grooves corresponding to the rotating wheels one by one are formed in the hub frame along the circumferential direction thereof, two fixed seats are oppositely arranged on the bottom wall of the installation groove, the two fixed seats are connected by a fixed shaft, and the rotating wheel is connected to the fixed shaft through a rolling bearing.

[0013] As a further optimization of the invention of a pipeline plugging device with dual motors and dual drives: a guide ring and two separating rings are arranged on the installation shaft, the guide ring is rotatably sleeved on the installation shaft, and the guide ring is located between the two separating rings, the separating rings are fixedly sleeved on the installation shaft, and the separating rings are located between the hub frame and the closing disk.

[0014] As a further optimization of the invention of a pipeline plugging device with dual motors and dual drives: a plurality of spacer rings are movably sleeved on the installation cylinder, and the spacer rings are arranged between adjacent two of the soft sealing sleeves one by one.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1) By setting a plugging mechanism in the present invention, the plugging mechanism includes a plugging motor, a moving ring, a baffle ring and a plurality of soft sealing sleeves. The plugging motor is arranged inside the installation cylinder, the moving ring and the soft sealing sleeves are both movably sleeved outside the installation cylinder, the baffle ring is fixedly sleeved on the installation cylinder, the plugging motor is connected to the moving ring through a first transmission component. During the rotation of the plugging motor, the moving ring is driven by the first transmission component to move towards the baffle ring and squeeze the soft sealing sleeves so that the soft sealing sleeves expand radially, and the expanded soft sealing sleeves abut against the inner wall of the pipeline to complete the plugging process.

[0017] 2) By setting an anchoring mechanism in the present invention, the anchoring mechanism includes an anchoring motor, a pushing bowl and a plurality of anchoring jaws. The anchoring motor is arranged inside the installation cylinder, the pushing bowl is movably sleeved on the installation cylinder, the anchoring motor is connected to the pushing bowl through a second transmission component, the anchoring jaws are distributed along the circumferential direction of the installation cylinder and are movably connected to the installation cylinder. During the rotation of the anchoring motor, the pushing bowl is driven by the second transmission component to jack up the anchoring jaws until the anchoring jaws are tightly abutted against the inner wall of the pipeline to achieve the anchoring state. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the internal schematic diagram of the present invention; Figure 2 is the front view of the present invention; Figure 3 It is a partial enlarged view of part A of the present invention; Figure 4 It is a schematic structural view of the present invention; Figure 5 It is a partial enlarged view of part B of the present invention; Figure 6 It is a schematic view of the self-locking structure of the present invention; Figure 7 It is a schematic view of the cooperation of the collar, the pushing bowl and the second lead screw; Figure 8 It is a schematic view of the installation cylinder of the present invention; Markings in the figure: 1, plugging motor; 2, first output shaft; 3, first lead screw; 4, mounting ring; 5, mounting rod; 6, guiding ring; 7, separating ring; 8, hub frame; 9, mounting shaft; 10, closing disc; 11, moving ring; 12, soft sealing sleeve; 13, spacer ring; 14, anchoring motor; 15, second output shaft; 16, second lead screw; 17, collar; 18, extension rod; 19, mounting part; 20, pushing part; 21, installation cylinder; 22, blocking ring; 23, connecting pin; 24, anchoring jaw; 25, connecting piece; 26, fixing ring; 27, installation groove; 28, fixing seat; 29, rolling bearing; 30, rotating wheel; 31, first slideway; 32, notch; 33, channel; 34, second slideway; 35, connecting shaft; 36, connecting groove; 37, first connecting rod; 38, first clamping plate; 39, mounting block; 40, second connecting rod; 41, second clamping plate; 42, anti-disengagement part; 43, connecting part; 44, inserting groove. Detailed implementation manners

[0019] The technical solutions of the present invention will be further elaborated in detail below in combination with specific embodiments. For parts that are not detailedly recorded and disclosed in the following embodiments of the present invention, they should all be understood as the prior art known or should be known to those skilled in the art, such as the specific structures and models of the plugging motor 1, the anchoring motor 14, the first lead screw 3 and the second lead screw 16, the material of the soft sealing sleeve 12, the material and model of the anchoring jaw 24, the specific structures and models of the rolling bearing 29 and the rotating wheel 30, how the pipeline plugging device enters the pipeline, etc.

[0020] Embodiment 1

[0021] A pipeline plugging device with dual-motor and dual-drive, as shown in Figure 1 and Figure 2As shown in the figure, it includes an installation cylinder 21, on which a plugging mechanism and an anchoring mechanism are provided; the plugging mechanism includes a plugging motor 1, a moving ring 11, a partition ring 22 and a plurality of soft sealing sleeves 12. The plugging motor 1 is arranged inside the installation cylinder 21, and a first installation shell for installing the plugging motor 1 is arranged inside the installation cylinder 21. The moving ring 11 and the soft sealing sleeves 12 are both movably sleeved outside the installation cylinder 21. The partition ring 22 is fixedly sleeved on the installation cylinder 21. The plugging motor 1 is connected to the moving ring 11 through a first transmission assembly. During the rotation of the plugging motor 1, the moving ring 11 is driven by the first transmission assembly to move towards the partition ring 22 and squeeze the soft sealing sleeves 12 to make the soft sealing sleeves 12 expand radially. The anchoring mechanism includes an anchoring motor 14, a pushing bowl and several anchoring jaws 24. The anchoring motor 14 is arranged inside the installation cylinder 21, and a second installation shell for installing the anchoring motor 14 is arranged inside the installation cylinder 21. The pushing bowl is movably sleeved on the installation cylinder 21. The anchoring motor 14 is connected to the pushing bowl through a second transmission assembly. The anchoring jaws 24 are distributed along the circumferential direction of the installation cylinder 21 and are movably connected to the installation cylinder 21. During the rotation of the anchoring motor 14, the second transmission assembly drives the pushing bowl to jack up the anchoring jaws 24 until the anchoring jaws 24 are tightly pressed against the inner wall of the pipeline. The present invention is applied to a complete set of pipeline plugging robots, which are conventional prior arts in this field and will not be elaborated here. The applicable range of the present invention is controlled within pipelines with a diameter of 15 inches to 18 inches. Through simulation calculation, the optimal tooth inclination angle α of the anchoring jaw 24 is 20°, the tooth apex angle β of the anchoring jaw 24 is 75°, the tooth width d of the anchoring jaw 24 is 8 mm, the inner cone angle γ of the anchoring jaw 24 is 15°, the number of jaw surfaces n is 6, the side inclination angle of the anchoring jaw is 5°, and the chamfer angle of the outer end face of the anchoring jaw is 15°, etc., which can avoid stress concentration damage at the initial stage of contact with the pipeline, achieve effective braking, reduce damage to the inner wall of the pipeline and the occurrence of anchoring failure.

[0022] As Figure 1As shown in the figure, the first transmission assembly includes a first lead screw 3, a mounting ring 4, and at least one mounting rod 5. The first lead screw 3 is fixedly connected to the first output shaft 2 of the plugging motor 1. The mounting ring 4 is connected to the first lead screw 3 through a first ball nut. The mounting rod 5 is fixedly arranged on the surface of the mounting ring 4 and extends along the radial direction of the mounting cylinder 21. A first slideway 31 for the mounting rod 5 to pass through is formed on the surface of the mounting cylinder 21. The first slideway 31 extends along the axial direction of the mounting cylinder 21, and after passing through the first slideway 31, the mounting rod 5 is fixedly connected to the inner wall of the moving ring 11. The second transmission assembly includes a second lead screw 16, a collar 17, and at least one extension rod 18. The second lead screw 16 is fixedly connected to the second output shaft 15 of the anchoring motor 14. The collar 17 is connected to the second lead screw 16 through a second ball nut in a mating manner. The extension rod 18 is fixedly arranged on the surface of the collar 17. A second slideway 34 for the extension rod 18 to pass through is formed on the surface of the mounting cylinder 21. The second slideway 34 extends along the axial direction of the mounting cylinder 21, and after passing through the second slideway 34, the extension rod 18 is fixedly connected to the inner wall of the pushing bowl.

[0023] The control system of the plugging device first controls the start of the anchoring motor 14. While the second output shaft 15 of the anchoring motor 14 rotates, it drives the second lead screw 16 to work, causing the collar 17 connected to the second lead screw 16 through the second ball nut to move on the second lead screw 16; during the movement of the collar 17, the extension rod 18 will move along the second slideway 34, and at the same time, the extension rod 18 drives the pushing bowl to move along with it on the mounting cylinder 21; during the movement of the pushing bowl, since the anchoring jaws 24 are distributed along the circumferential direction of the mounting cylinder 21 and are movably connected to the mounting cylinder 21, the pushing bowl can push up the anchoring jaws 24 until the anchoring jaws 24 are tightly pressed against the inner wall of the pipeline. After the anchoring of the anchoring jaws 24 is completed, the control system of the plugging device controls the start of the plugging motor 1. While the first output shaft 2 of the plugging motor 1 rotates, it drives the first lead screw 3 to work, causing the mounting ring 4 connected to the first lead screw 3 through the first ball nut to move on the first lead screw 3; during the movement of the mounting ring 4, the mounting rod 5 will move along the first slideway 31, and at the same time, the mounting rod 5 drives the moving ring 11 to move along with it on the mounting cylinder 21; during the movement of the moving ring 11, due to the setting of the partition ring 22, the moving ring 11 will gradually squeeze all the soft sealing sleeves 12, causing the soft sealing sleeves 12 to expand radially. The radial expansion of the soft sealing sleeves 12 will abut against the inner wall of the pipeline, completing the plugging process. During plugging, it is not necessary to stop normal transportation, and plugging can be achieved without stopping the flow, and the plugging operation is very simple and fast, without generating additional devices.

[0024] The plugging motor 1 and the anchoring motor 14 can achieve the release of anchoring and plugging by rotating in the reverse direction, and the soft sealing sleeves 12 and the anchoring jaws 24 return to their original states. The specific working process is as follows:

[0025] The control system of the plugging device first controls the second output shaft 15 of the anchoring motor 14 to rotate in the reverse direction. While the second output shaft 15 of the anchoring motor 14 rotates, it drives the second lead screw 16 to work, causing the collar 17 connected to the second lead screw 16 through the second ball nut to move in the reverse direction on the second lead screw 16; during the reverse movement of the collar 17, the extension rod 18 will move along the second slideway 34, and at the same time the extension rod 18 drives the pushing bowl to move along with it on the installation cylinder 21; during the movement of the pushing bowl, it moves away from the anchoring jaw 24, so the anchoring jaw 24 is no longer lifted, and the anchoring is released. The pushing bowl continues to move until the anchoring jaw 24 returns to its initial state; the control system of the plugging device controls the first output shaft 2 of the plugging motor 1 to rotate in the reverse direction. While the first output shaft 2 of the plugging motor 1 rotates, it drives the first lead screw 3 to work, causing the installation ring 4 connected to the first lead screw 3 through the first ball nut to move in the reverse direction on the first lead screw 3; during the reverse movement of the installation ring 4, the installation rod 5 will move along the first slideway 31, and at the same time the installation rod 5 drives the moving ring 11 to move along with it on the installation cylinder 21; during the movement of the moving ring 11, it moves away from the partition ring 22, so the soft sealing sleeve 12 is no longer squeezed, and the soft sealing sleeve 12 gradually returns to its initial state, releasing the plugging.

[0026] In order to further enhance the squeezing effect of the moving ring 11 on the soft sealing sleeve 12, a plurality of spacer rings 13 are movably sleeved on the installation cylinder 21, and the spacer rings 13 are correspondingly arranged between two adjacent soft sealing sleeves 12. In the present invention, the soft sealing sleeve 12 is provided with three, and the spacer rings 13 are provided with two.

[0027] A plurality of guide rods parallel to the axis of the installation cylinder 21 are arranged in the installation cylinder 21, and the guide rods are used to assist the installation ring 4 and the collar 17 to move more smoothly.

[0028] In addition to the method of using the first lead screw 3 in cooperation with the plugging motor 1 in the first transmission component, the method of gear and rack meshing can also be adopted. Specifically: the first rack is connected to the moving ring 11 through the installation rod 5, the first gear is coaxially fixed to the output shaft of the plugging motor 1, and the first gear rotates together with the rotation of the output shaft of the plugging motor 1; then the first rack moves along the axis of the installation cylinder 21 with the rotation of the first gear, thereby driving the installation rod 5 and the moving ring 11 to move along the first slideway 31 on the installation cylinder 21. The second transmission component can also adopt the method of gear and rack meshing, which is the same as the first transmission component specifically, and will not be elaborated here.

[0029] The control system of the plugging device for controlling the plugging motor 1 and the anchoring motor 14 is a conventional prior art in the field, which will not be elaborated here. Through the hierarchical control of the plugging motor 1 and the anchoring motor 14, while ensuring the smooth opening and closing of the anchoring jaw 24, the sealing effect of the soft sealing sleeve 12 is ensured; and the anchoring jaw 24 achieves more accurate anchoring, effectively reducing the damage to the inner wall of the pipeline and reducing the situation of anchoring failure. The hierarchical transmission of the first transmission component and the second transmission component ensures the orderliness of the movement of the anchoring jaw 24 and the soft sealing sleeve 12, achieving high control reliability. The models of the plugging motor 1 and the anchoring motor 14 are Moons 80BL300L4. The expected peak output power of the plugging motor 1 and the anchoring motor 14 is 500W, the working voltage is 48VDC, the rated current is 348.4A, and the rated speed is 4000rp m , the working power is 300W, and the bearing pressure is 6MPa.

[0030] The above is the basic implementation mode of the present invention, and further improvements, optimizations and limitations can be made on this basis to obtain the following embodiments:

[0031] Embodiment 2

[0032] This embodiment is an improved scheme based on Embodiment 1. Its main structure is the same as that of Embodiment 1. The improvement lies in: as Figures 3 to 5 shown, in order to facilitate the pushing bowl to lift the anchoring jaw 24, a fixing ring 26 is fixedly sleeved on the installation cylinder 21. One end of the anchoring jaw 24 is rotatably connected to the fixing ring 26 through a connecting piece 25, and the other end of the anchoring jaw 24 is rotatably connected to the pushing bowl through a connecting pin 23. When the pushing bowl moves towards the anchoring jaw 24, since the pushing bowl is rotatably connected through the connecting pin 23, the pushing bowl can continue to advance after contacting the anchoring jaw 24 until the anchoring jaw 24 is tightly pressed against the inner wall of the pipeline.

[0033] The connecting member 25 includes a anti-disengagement part 42 and a connecting part 43 which are fixedly connected, and the anti-disengagement part 42 and the connecting part 43 are perpendicular to each other, and the anti-disengagement part 42 and the connecting part 43 are in a T-shaped structure. A plugging slot 44 for accommodating the anti-disengagement part 42 is formed on the fixing ring 26, a through slot for the connecting part 43 to pass through is formed at the bottom of the plugging slot 44, and the part of the connecting part 43 extending out of the through slot is rotatably connected to the anchoring slip 24. A channel 33 is formed on the anchoring slip 24, and the part of the connecting part 43 extending out of the through slot extends into the channel 33 of the anchoring slip 24 and is rotatably connected to the side wall of the channel 33. The length of the channel 33 is greater than the length of the part of the connecting part 43 extending into the channel 33, so as to avoid interference between the anchoring slip 24 and the connecting part 43 when the anchoring slip 24 rotates. The anti-disengagement part 42 and the plugging slot 44 are rotatably connected through a first rotating shaft. How the first rotating shaft is connected to the anti-disengagement part 42 and the plugging slot 44 is conventional prior art in the field and will not be elaborated here. The implementation manner is, for example: during processing, two first installation strip-shaped slots for installing the first rotating shaft are reserved in advance on the fixing ring 26, the first rotating shaft sequentially rotates through one of the first installation strip-shaped slots, the anti-disengagement part 42 and the other first installation strip-shaped slot, and both ends of the first rotating shaft extending out of the first installation strip-shaped slot are fastened by first anti-disengagement nuts to ensure that the first rotating shaft will not fall off. It can also be installed by other implementation manners, and only an example is given here. The connecting part 43 and the side wall of the channel 33 are rotatably connected through a second rotating shaft. During processing, a second installation space for installing the second rotating shaft is reserved in advance on the anchoring slip 24. How the second rotating shaft is connected to the connecting part 43 and the channel 33 is conventional prior art in the field and will not be elaborated here. The implementation manner is, for example: during processing, two second installation strip-shaped slots for installing the second rotating shaft are reserved in advance at the bottom of the anchoring slip 24, the second rotating shaft sequentially rotates through one of the second installation strip-shaped slots, the connecting part 43 and the other second installation strip-shaped slot, and both ends of the second rotating shaft extending out of the second installation strip-shaped slot are fastened by second anti-disengagement nuts to ensure that the second rotating shaft will not fall off. It can also be installed by other implementation manners, and only an example is given here.

[0034] The pushing bowl includes a fixedly connected mounting part 19 and a pushing part 20. The mounting part 19 is connected to the second transmission component, and the pushing part 20 is rotatably connected to the other end of the anchoring slip 24 through a connecting pin 23. A connecting groove 36 is formed on the anchoring slip 24, and a notch 32 is provided on the pushing part 20. Two connecting shafts 35 are fixedly arranged on the body of the connecting pin 23. One of the connecting shafts 35 is rotatably arranged in the connecting groove 36, and the other connecting shaft 35 is rotatably arranged in the notch 32. The specific connection method is the same as the above method of installing the first rotating shaft or the second rotating shaft, or other means can be adopted for installation. This installation method is a conventional existing technology in this field and will not be elaborated here. When the pushing part 20 moves, the body of the connecting pin 23 will rotate to lift the anchoring slip 24. In order to better push the anchoring slip 24 to lift, a first conical surface is provided on the inner side wall of the anchoring slip 24, and a second conical surface is provided on the pushing part 20. When the pushing part 20 pushes the connecting pin 23 to move, the first conical surface and the second conical surface can come into contact.

[0035] Embodiment 3

[0036] This embodiment is an improved scheme based on Embodiment 2. Its main structure is the same as that of Embodiment 2. The improvement lies in: as Figures 6 to 8 shown, a closing disk 10 is provided at one end of the installation cylinder 21. The first transmission component includes a self-locking structure. The self-locking structure includes a first connecting rod 37 and a second connecting rod 40. The first connecting rod 37 is fixedly connected to the end of the installation ring 4, and the second connecting rod 40 is fixedly connected to the inner surface of the closing disk 10. A first clamping plate 38 is provided at the bottom of the first connecting rod 37, and a second clamping plate 41 is provided at the top of the second connecting rod 40. During the movement of the installation ring 4 on the first lead screw 3, the first clamping plate 38 and the second clamping plate 41 can be engaged or separated from each other. When the plugging motor 1 drives the first lead screw 3 to work, so that the installation ring 4 connected to the first lead screw 3 through the first ball nut moves on the first lead screw 3, the first clamping plate 38 and the second clamping plate 41 are engaged with each other to achieve self-locking; when the plugging motor 1 drives the first lead screw 3 to work in the reverse direction, so that the installation ring 4 moves in the reverse direction on the first lead screw 3, the first clamping plate 38 and the second clamping plate 41 are separated from each other, and the unlocking can be achieved. For the convenience of installation, the second connecting rod 40 is connected to the sealing disk through a mounting block 39.

[0037] As Figure 2 and Figure 4As shown, an installation shaft 9 is coaxially connected to the surface of the closed disk 10 located outside the installation cylinder 21. A hub frame 8 is fixedly sleeved on the installation shaft 9. A plurality of rotating wheels 30 are rotatably arranged on the hub frame 8 along its circumferential direction, and the rotating direction of the rotating wheels 30 is the same as the moving direction of the installation cylinder 21. In this way, the resistance can be reduced during the movement of the pipeline plugging device, and the moving speed is faster. A plurality of installation grooves 27 corresponding to the rotating wheels 30 one by one are formed on the hub frame 8 along its circumferential direction. Two fixing seats 28 are oppositely arranged on the bottom wall of the installation groove 27. The two fixing seats 28 are connected by a fixing shaft, and the rotating wheel 30 is connected to the fixing shaft through a rolling bearing 29. However, in order to avoid excessive moving speed, as Figure 2 、 Figure 4 and Figure 8 shown, a guide ring 6 and two separating rings 7 are arranged on the installation shaft 9. The guide ring 6 is rotatably sleeved on the installation shaft 9, and the guide ring 6 is located between the two separating rings 7. The separating rings 7 are fixedly sleeved on the installation shaft 9, and the separating rings 7 are located between the hub frame 8 and the closed disk 10. The guide ring 6 can rotate circumferentially to a certain extent, and a certain resistance will be generated on the axially rotating rotating wheel 30.

[0038] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dual-motor dual-drive pipeline plugging device, characterized in that: It comprises a mounting tube (21), on which a blocking mechanism and an anchoring mechanism are arranged; The blocking mechanism comprises a blocking motor (1), a moving ring (11), a baffle ring (22) and a plurality of soft sealing sleeves (12); the blocking motor (1) is arranged inside a mounting tube (21); the moving ring (11) and the soft sealing sleeve (12) are both movably sleeved outside the mounting tube (21); the baffle ring (22) is fixedly sleeved on the mounting tube (21); the blocking motor (1) is connected to the moving ring (11) via a first transmission component; during the rotation of the blocking motor (1), the moving ring (11) is driven by the first transmission component to move toward the baffle ring (22) and squeeze the soft sealing sleeve (12) so that the soft sealing sleeve (12) expands radially; The anchoring mechanism comprises an anchoring motor (14), a pushing bowl and a plurality of anchoring slips (24); the anchoring motor (14) is arranged inside a mounting tube (21); the pushing bowl is movably sleeved on the mounting tube (21); the anchoring motor (14) is connected to the pushing bowl via a second transmission component; the anchoring slips (24) are distributed along the circumferential direction of the mounting tube (21) and are movably connected to the mounting tube (21); during the rotation of the anchoring motor (14), the second transmission component drives the pushing bowl to lift the anchoring slips (24) until the anchoring slips (24) are tightly pressed against the inner wall of the pipeline.

2. The dual-motor dual-drive pipeline plugging device according to claim 1, characterized in that: A fixing ring (26) is fixedly sleeved on the mounting cylinder (21), one end of the anchoring slip (24) is rotatably connected to the fixing ring (26) via a connecting piece (25), and the other end of the anchoring slip (24) is rotatably connected to the pushing bowl via a connecting pin (23).

3. The dual-motor dual-drive pipeline plugging device according to claim 2, characterized in that: The connecting member (25) comprises an anti-slipping portion (42) and a connecting portion (43) which are fixedly connected, and the anti-slipping portion (42) and the connecting portion (43) are perpendicular to each other. The fixing ring (26) is provided with a plug-in slot (44) for accommodating the anti-slipping portion (42), and a through slot for the connecting portion (43) to pass through is provided at the bottom of the plug-in slot (44), and the portion of the connecting portion (43) extending out of the through slot is rotatably connected to the anchoring cava (24). The pushing bowl comprises a fixedly connected mounting portion (19) and a pushing portion (20), the mounting portion (19) is connected to the second transmission assembly, and the pushing portion (20) is rotatably connected to the other end of the anchoring cava (24) through a connecting pin (23).

4. The dual-motor dual-drive pipeline plugging device according to claim 3, characterized in that: The inner side wall of the anchoring slip (24) is provided with a first conical surface, and the pushing portion (20) is provided with a second conical surface. When the pushing portion (20) pushes the connecting pin (23) to move, the first conical surface and the second conical surface can contact each other.

5. The dual-motor dual-drive pipeline plugging device according to claim 1, characterized in that: The first transmission assembly comprises a first lead screw (3), a mounting ring (4) and at least one mounting rod (5); the first lead screw (3) is fixedly connected to the first output shaft (2) of the plugging motor (1); the mounting ring (4) is connected to the first lead screw (3) via a first ball nut; the mounting rod (5) is fixedly arranged on the surface of the mounting ring (4), and the mounting rod (5) extends radially along the mounting cylinder (21); a first slideway (31) for the mounting rod (5) to pass through is provided on the surface of the mounting cylinder (21); the first slideway (31) extends axially along the mounting cylinder (21), and the mounting rod (5) is connected to the movable ring (11) after passing through the first slideway (31). The second transmission assembly comprises a second lead screw (16), a collar (17) and at least one extension rod (18); the second lead screw (16) is fixedly connected to the second output shaft (15) of the anchoring motor (14); the collar (17) is connected to the second lead screw (16) through a second ball nut; the extension rod (18) is fixedly arranged on the surface of the collar (17); a second slideway (34) for the extension rod (18) to pass through is provided on the surface of the mounting tube (21); the second slideway (34) extends along the axial direction of the mounting tube (21); and the extension rod (18) is fixedly connected to the inner wall of the pushing bowl after passing through the second slideway (34).

6. The dual-motor dual-drive pipeline plugging device according to claim 5, characterized in that: A closing disk (10) is provided at one end of the mounting tube (21), and the first transmission assembly includes a self-locking structure, which includes a first connecting rod (37) and a second connecting rod (40). The first connecting rod (37) is fixedly connected to the end of the mounting ring (4), and the second connecting rod (40) is fixedly connected to the inner surface of the closing disk (10). A first buckle plate (38) is provided at the bottom of the first connecting rod (37), and a second buckle plate (41) is provided at the top of the second connecting rod (40). When the mounting ring (4) moves on the first screw (3), the first buckle plate (38) and the second buckle plate (41) can be buckled or separated from each other.

7. The dual-motor dual-drive pipeline plugging device according to claim 6, characterized in that: The surface of the closing disk (10) located outside the mounting cylinder (21) is coaxially connected to a mounting shaft (9), a hub frame (8) is fixedly sleeved on the mounting shaft (9), and the hub frame (8) is provided with a plurality of rotating wheels (30) rotatably arranged along its circumferential direction, and the rotating direction of the rotating wheels (30) is consistent with the moving direction of the mounting cylinder (21).

8. The dual-motor dual-drive pipeline plugging device according to claim 7, characterized in that: The hub frame (8) is provided with a plurality of mounting grooves (27) corresponding to the rotating wheels (30) along its circumferential direction, and two fixing seats (28) are arranged opposite to each other on the bottom walls of the mounting grooves (27). The two fixing seats (28) are connected via a fixed shaft, and the rotating wheel (30) is connected to the fixed shaft via a rolling bearing (29).

9. The dual-motor dual-drive pipeline plugging device according to claim 7, characterized in that: A guide ring (6) and two separation rings (7) are arranged on the installation shaft (9); the guide ring (6) is rotatably sleeved on the installation shaft (9), and the guide ring (6) is located between the two separation rings (7); the separation ring (7) is fixedly sleeved on the installation shaft (9), and the separation ring (7) is located between the wheel hub frame (8) and the closing disk (10).

10. The dual-motor dual-drive pipeline plugging device according to claim 1, characterized in that: The movable sleeve on the installation tube (21) is provided with a plurality of spacers (13), and the spacers (13) are arranged one by one between two adjacent soft sealing sleeves (12).

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