Push-pull rod frame device for ball receiving and sending

Abstract

The utility model relates to the technical field of pipeline internal detection, and solves the problems that in the prior art, a large-diameter pipeline internal detection supporting leg cannot achieve rapid and effective supporting, the running direction of the end of the supporting leg is single, and eccentricity is prone to occurring. The device comprises a push-pull rod and a triangular bracket, the triangular bracket is vertically and fixedly connected outside the push-pull rod; the triangular bracket is used for supporting the push-pull rod; the triangular bracket comprises a connecting cylinder and supporting legs; the supporting legs are of telescopic structures; each supporting leg comprises a threaded cylinder with an internal thread and a threaded rod with an external thread, and the threaded cylinder can be partially connected to the threaded rod in a sleeving mode so as to adjust the length of the supporting leg; ball bodies are installed at the tail ends of the supporting legs and used for making contact with the inner wall of the ball receiving and sending cylinder. The length of the supporting legs can be quickly adjusted to adapt to different ball cylinder inner diameters, and the push-pull rod is not prone to eccentricity.

Description

Technical Field

[0001] The utility model relates to the technical field of in-pipe inspection, in particular to a pigging push-pull rod frame device. Background Art

[0002] Oil and gas pipelines are important channels for transporting fossil energy such as petroleum and natural gas in a country. Affected by factors such as geological environment and transported medium, steel pipelines are prone to problems such as corrosion, deformation, and sediment impurities, which may lead to medium leakage, environmental pollution, reduced transportation efficiency, and even serious accidents such as explosions. Therefore, it is necessary to clean the pipeline regularly. Pipeline pigging mostly uses in-pipe inspection equipment for pigging and inspection operations. In the industry, in-pipe inspection equipment is mostly called a ball, and its entry and exit from the pipeline are simply referred to as pigging. During the operation process, the ball must be pushed into or pulled out of the pigging cylinder to a suitable position through a push-pull rod.

[0003] In the operation of pushing and pulling the ball in the pigging cylinder by in-pipe inspection equipment for large-diameter pipelines, a support leg structure that can be quickly adjusted to a suitable length is required to effectively support the push-pull rod and improve the operation efficiency. At present, the ends of the support legs mostly use rollers, and the running direction of the rollers is single. When encountering obstacles, it is easy to cause eccentricity, thrust dispersion, and yield failure when pushing the ball into the cylinder, and it is difficult to hook the ball rope with a manual swing rod when pulling the ball out of the cylinder because the cylinder is relatively deep. Summary of the Utility Model

[0004] In view of the above analysis, the embodiments of the utility model aim to provide a pigging push-pull rod frame device to solve the problems that the support legs for in-pipe inspection of large-diameter pipelines cannot form effective support, the running direction of the ends of the support legs is single, and eccentricity is easy to occur.

[0005] The purpose of the utility model is mainly achieved through the following technical solutions:

[0006] A pigging push-pull rod frame device includes a push-pull rod and a triangular bracket;

[0007] The triangular bracket is vertically and fixedly connected to the outside of the push-pull rod; the triangular bracket is used to support the push-pull rod;

[0008] The triangular bracket includes a connecting cylinder and support legs; the support legs are telescopic structures; the support legs include a threaded cylinder and a screw rod, and the threaded cylinder can be partially sleeved on the screw rod to adjust the length of the support legs;

[0009] A sphere is installed at the end of the support leg, and the sphere is used to contact the inner wall of the pigging cylinder.

[0010] Further, the support leg further includes a sleeve, and the sleeve is arranged between the connecting cylinder and the threaded cylinder; the sleeve can be partially sleeved on the outside of the threaded cylinder.

[0011] Further, the support leg further includes a bolt; the sleeve is provided with a plurality of through holes along its axial direction, the threaded cylinder is provided with through grooves at positions corresponding to the through holes along its axial direction, and the bolt can be inserted into the through holes and the through grooves to fix the sleeve.

[0012] Further, the push-pull rod is of a hollow structure, and multiple groups of push-pull rod through holes are arranged on the wall surface of the push-pull rod.

[0013] Further, one end of the push-pull rod has an external thread, and the other end of the push-pull rod has an internal thread; a plurality of the push-pull rods are provided, and the plurality of push-pull rods can be connected end to end through threads.

[0014] Further, at least one triangular bracket is provided, and at least one triangular bracket is uniformly arranged along the length direction of the push-pull rod.

[0015] Further, the connecting cylinder is sleeved outside the push-pull rod, and the support legs are uniformly distributed along the circumferential direction of the connecting cylinder.

[0016] Further, the triangular bracket further includes a pin; the connecting cylinder has a pin-through threaded hole, and the pin-through threaded hole can be aligned with the push rod through hole; the pin can penetrate into the pin-through threaded hole and the push rod through hole.

[0017] Further, a push plate is further included, and the push plate is installed at the end of the push-pull rod.

[0018] Further, an anti-disengagement hook is further included, and the anti-disengagement hook is installed at the end of the push-pull rod; the anti-disengagement hook includes a disengagement hook, an anti-disengagement baffle and a disengagement hook interface.

[0019] Compared with the prior art, the present utility model can at least achieve one of the following beneficial effects:

[0020] (1) Compared with the prior art, the telescopic structure of the support leg in the present utility model adopts an internal and external thread screwing connection form. By screwing the screw out of the threaded cylinder, the length of the support leg is increased, and the telescopic length of the triangular bracket can be accurately controlled to adapt to the diameters of different receiving and serving cylinders, achieving better stability and reliability.

[0021] (2) Compared with installing rollers at the support leg in the prior art, where the rollers are in line contact with the inner wall of the receiving and serving cylinder and can only move along a single straight line on the inner wall of the receiving and serving cylinder, and when encountering obstacles during movement, the trajectory route changes, which easily causes the rollers to shift or deform, affecting the working efficiency of the push-pull rod frame device. In the present utility model, universal steel ball bearings are installed at the support leg, and the end of the support leg can freely roll in multiple directions and can maintain the stability of the triangular bracket, increasing the movement flexibility of the support leg, ensuring that the rod is not eccentric and the thrust is not dispersed when pushing the ball into the cylinder, and improving the operation reliability of the device.

[0022] (3) Compared with the prior art, the thick adjustment structure of the support legs is provided in the present utility model, which can significantly improve the adjustment efficiency. Combined with the fine adjustment structure, the support legs can be quickly adjusted to a length suitable for the inner diameter of the ball receiving and serving cylinder, forming an effective support for the push-pull rod. The length of the support legs is suitable for the inner diameter of the ball receiving and serving cylinder. On the one hand, the space inside the cylinder can be utilized to the maximum extent, avoiding interference between the overly long support legs and the inner wall, and the overly short support legs being unable to form a good support. On the other hand, the contact force between the support legs and the cylinder wall is more uniform, and the support legs can form a stable support structure inside the cylinder, ensuring that the bracket will not shake easily during the ball receiving and serving operation, and improving the working efficiency of pipeline cleaning.

[0023] (4) One end of the push-pull rod in the present utility model has an external thread, and the other end has an internal thread. Adjacent push-pull rods are connected through the internal and external threads, which can achieve rapid assembly and high alignment of the push-pull rod. Multiple groups of radial through holes are provided on the side wall of the rod body of the push-pull rod, which are the through holes of the push-pull rod, facilitating weight reduction and fixed connection with the triangular bracket and the ball receiving and serving vehicle.

[0024] (5) At least one triangular bracket is provided in the present utility model, which is evenly arranged along the length direction of the push-pull rod to effectively support the push-pull rod and improve its stability. The support legs are evenly distributed circumferentially along the connecting cylinder, which can provide stable support for the push-pull rod.

[0025] (6) In the present utility model, the connecting cylinder is radially provided with a pin threaded hole, and the push-pull rod is provided with a through hole of the push-pull rod. The pin is inserted into the threaded hole of the connecting cylinder for connection and fixation.

[0026] (7) A push plate and an anti-disengagement hook are provided in the present utility model. The push plate is used for the operation of pushing the ball into the cylinder, and the anti-disengagement hook is used for the operation of pulling the ball out of the cylinder.

[0027] In the present utility model, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination schemes. Other features and advantages of the present utility model will be described in the following content. Moreover, some advantages can be made obvious from the description or understood by implementing the present utility model. The purpose and other advantages of the present utility model can be achieved and obtained through the content specifically pointed out in the text and the drawings. Description of the Drawings

[0028] The drawings are only for the purpose of showing specific embodiments and are not considered as a limitation to the present utility model. Throughout the drawings, the same reference signs represent the same components.

[0029] Figure 1 It is a schematic diagram of the combined structure of the push-pull rod and the triangular bracket for Specific Embodiment 1;

[0030] Figure 2 It is a schematic diagram of the structure of the push-pull rod for Specific Embodiment 1;

[0031] Figure 3 It is a schematic structural view of the triangular support in Specific Embodiment 1;

[0032] Figure 4 It is a schematic structural view of the ball pushing into cylinder device in Specific Embodiment 1;

[0033] Figure 5 It is a schematic structural view of the push plate in Specific Embodiment 1;

[0034] Figure 6 It is a schematic structural view of the ball pulling into cylinder device in Specific Embodiment 1;

[0035] Figure 7 It is a schematic structural view of the anti - decoupling hook in Specific Embodiment 1;

[0036] Figure 8 It is a schematic structural view of the triangular support in Specific Embodiment 2.

[0037] Reference signs:

[0038] 1 - Push - pull rod, 101 - Through - hole of push - pull rod, 2 - Triangular support, 201 - Connecting cylinder, 2011 - Threaded hole for pin, 202 - Support leg, 2021 - Threaded cylinder, 2022 - Screw rod, 2023 - Steel ball, 2024 - Sleeve, 2025 - Bolt, 203 - Pin, 204 - Chain, 3 - Push plate, 301 - Push - plate body, 302 - Push - plate interface, 4 - Anti - decoupling hook, 401 - Decoupling hook, 402 - Anti - decoupling baffle, 403 - Decoupling - hook interface. Detailed implementation mode

[0039] The following combines the attached drawings to specifically describe the preferred embodiments of the present invention. Among them, the attached drawings constitute a part of the present invention and are used together with the embodiments of the present invention to explain the principle of the present invention, and are not used to limit the scope of the present invention.

[0040] Embodiment 1

[0041] A specific embodiment of the present invention, as Figure 1 shown, discloses a ball receiving and serving push - pull rod 1 rack device, including a push - pull rod 1 and a triangular support 2.

[0042] A plurality of push - pull rods 1 are provided, and the length can be increased by connecting the head and the tail to adapt to receiving and serving cylinders with various depths. As Figure 2As shown in the figure, the push-pull rod 1 is a hollow cylindrical structure, with external threads at one end and internal threads at the other end. Adjacent push-pull rods 1 are connected by internal and external threads, enabling rapid assembly and high coaxiality of the push-pull rods 1. Multiple groups of radial through-holes, namely push-pull rod through-holes 103, are provided on the side wall of the rod body of the push-pull rod 1, facilitating weight reduction and fixed connection with the triangular bracket 2 and the pig launcher-receiver cart.

[0043] The triangular bracket 2 is vertically and fixedly connected to the outside of the push-pull rod 1. At least one triangular bracket 2 is provided and evenly arranged along the length direction of the push-pull rod 1 to effectively support the push-pull rod 1 and improve the stability of the push-pull rod 1.

[0044] As Figure 3 shown in the figure, the triangular bracket 2 includes a connecting cylinder 201 and support legs 202. The connecting cylinder 201 is sleeved on the outside of the push-pull rod 1. The connecting cylinder 201 is radially provided with a threaded through-hole, namely the pin-through threaded hole 2011. During installation, the pin-through threaded hole 2011 of the connecting cylinder 201 is aligned with a group of radial through-holes of the push-pull rod 1, and the pin 203 is inserted into the threaded hole of the connecting cylinder 201 for connection and fixation.

[0045] Furthermore, a chain 204 is also provided on the outside of the connecting cylinder 201. One end of the chain 204 is fixed to the outside of the connecting cylinder 201, and the other end is connected to a threaded pin. The provision of the chain 204 can strengthen the fixation between the triangular bracket 2 and the push-pull rod 1 and prevent the triangular bracket 2 from detaching from the push-pull rod 1.

[0046] Three support legs 202 evenly distributed in the circumferential direction are fixedly connected to the connecting cylinder 201. The support legs 202 are tubular telescopic structures, including a threaded cylinder 2021 with internal threads and a screw rod 2022 with external threads. The threaded cylinder 2021 is partially sleeved on the outside of the screw rod 2022, and the screw rod 2022 can be screwed out of the threaded cylinder 2021 to increase the length of the support leg 202 and adapt to different diameters of the pig launcher-receiver cylinder.

[0047] Compared with the prior art, the telescopic structure of the support legs 202 in this embodiment adopts the form of internal and external thread screwing connection. By screwing the screw rod 2022 out of the threaded cylinder 2021 to increase the length of the support leg 202, the telescopic length of the triangular bracket 2 can be precisely controlled to adapt to different diameters of the pig launcher-receiver cylinder and achieve better stability and reliability.

[0048] Furthermore, a sphere, namely a universal steel ball 2023 in this embodiment, is installed at the end of the support leg 202 for contact with the inner wall of the pig launcher-receiver cylinder.

[0049] Compared with installing rollers at the support leg 202 in the prior art, where the rollers are in line contact with the inner wall of the receiving and sending ball cylinder and can only move along a single straight line on the inner wall of the receiving and sending ball cylinder, when encountering obstacles during movement, the trajectory line changes, which easily causes the rollers to shift or deform, affecting the working efficiency of the push-pull rod 1 device. In this embodiment, universal steel balls 2023 are installed at the support leg 202, and the end of the support leg 202 can freely roll in multiple directions and can maintain the stability of the triangular bracket 2, increasing the movement flexibility of the support leg 202, ensuring that the rod is not eccentric and the thrust is not dispersed when pushing the ball into the cylinder, and improving the operation reliability of the device.

[0050] As Figure 4 shown, further, a push plate 3 is also included. The push plate 3 is installed at the end of the push-pull rod 1 and is used to push the cleaning object out of the ball cylinder when pushing the ball into the cylinder. As Figure 5 shown, the body 301 of the push plate is a circular plate, and a push plate interface 302 is provided on one side of the plate body, with internal threads, which can be screwed into the end of the push-pull rod 1.

[0051] As Figure 6 shown, further, a anti-disengagement hook 4 is also included. The anti-disengagement hook 4 is installed at the end of the push-pull rod 1 and is used to hook the internal steel wire rope of the ball cylinder when pulling the ball out of the cylinder to hook the cleaning object out of the ball cylinder. As Figure 7 shown, an anti-disengagement baffle 402 is installed at the mouth of the anti-disengagement hook 4 to prevent the objects inside the anti-disengagement hook 4 from falling off. The anti-disengagement baffle 402 is an elastic body, one end is hinged to the root of the anti-disengagement hook 4, and the other end leans against the end of the anti-disengagement hook 4. A disengagement hook interface 403 is installed at the root of the anti-disengagement hook 4, with internal threads, which can be connected to the external threads at the end of the push-pull rod 1.

[0052] During use, according to the length of the ball cylinder, a plurality of push-pull rods 1 are connected end to end by threads to a suitable length. When performing the operation of pushing the ball into the cylinder, the push plate 3 is screwed onto the end of the push-pull rod 1.

[0053] Embodiment 2

[0054] In view of the low efficiency of the threaded adjustment of the support leg 202, this embodiment makes improvements on the basis of Embodiment 1.

[0055] As Figure 8 shown, in this embodiment, a sleeve 2024 is provided between the connecting cylinder 201 and the threaded cylinder 2021 of the support leg 202. The inner diameter of the sleeve 2024 is larger than the outer diameter of the threaded cylinder 2021, and the sleeve 2024 can be partially sleeved on the outside of the threaded cylinder 2021. A plurality of through holes are uniformly arranged on the sleeve 2024 along the axial direction, and a through groove is correspondingly arranged on the threaded cylinder 2021 along the axial direction, and the width of the through groove is the same as the diameter of the through hole of the sleeve 2024.

[0056] When the support leg 202 expands and contracts, the threaded cylinder 2021 and the screw rod 2022 are pulled out or pushed inwards by a corresponding length according to the inner diameter of the receiving and sending ball cylinder for rough adjustment, and a bolt 2025 is inserted and fixed at the through hole of the sleeve 2024. Then, according to the difference between the length of the support leg 202 and the inner radius of the ball cylinder, the threaded connection length of the threaded cylinder 2021 and the screw rod 2022 is set for fine adjustment of the length of the support leg 202, so that the support leg 202 is suitable for the inner diameter of the receiving and sending ball cylinder.

[0057] Compared with the prior art, the present embodiment provides a rough adjustment structure for the support leg 202, which can significantly improve the adjustment efficiency. Combined with the fine adjustment structure, the support leg 202 can be quickly adjusted to a length suitable for the inner diameter of the receiving and sending ball cylinder. When the length of the support leg 202 is suitable for the inner diameter of the receiving and sending ball cylinder, on the one hand, the space inside the cylinder can be utilized to the maximum extent, avoiding interference between the overly long support leg 202 and the inner wall, and ensuring that objects on the cylinder wall can be cleaned thoroughly even when the support leg 202 is not too short. On the other hand, the contact force between the support leg 202 and the cylinder wall is more uniform, enabling the support leg 202 to form a stable support structure inside the cylinder, ensuring that the bracket will not shake easily during the receiving and sending operation, and improving the working efficiency of pipeline cleaning.

[0058] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention.

Claims

1. A push-pull rod frame device for pigging, characterized in that It includes a push rod (1) and a triangular bracket (2); The triangular bracket (2) is vertically and fixedly connected to the outside of the push rod (1); the triangular bracket (2) is used to support the push rod (1); The triangular bracket (2) includes a connecting cylinder (201) and support legs (202); the support legs (202) are telescopic structures; the support legs (202) include a threaded cylinder (2021) and a screw rod (2022), and the threaded cylinder (2021) can be partially sleeved on the screw rod (2022) to adjust the length of the support legs (202); A sphere is installed at the end of the support leg (202), and the sphere is used to contact the inner wall of the ball receiving and serving cylinder.

2. The receiving and sending push-pull rod frame device according to claim 1, characterized in that, The support leg (202) further includes a sleeve (2024), and the sleeve (2024) is arranged between the connecting cylinder (201) and the threaded cylinder (2021); the sleeve (2024) can be partially sleeved on the outside of the threaded cylinder (2021).

3. The receiving and sending push-pull rod frame device according to claim 2, wherein The support leg (202) further includes a bolt (2025); the sleeve (2024) is provided with a plurality of through holes along its axial direction, and the threaded cylinder (2021) is provided with through grooves corresponding to the positions of the through holes along its axial direction, and the bolt (2025) can be inserted into the through holes and the through grooves to fix the sleeve (2024).

4. The receiving and sending push-pull rod frame device according to claim 1, characterized in that, The push rod (1) is a hollow structure, and a plurality of groups of push rod through holes (101) are arranged on the wall surface of the push rod (1).

5. The receiving and sending push-pull rod frame device according to claim 1, characterized in that, One end of the push rod (1) has an external thread, and the other end of the push rod (1) has an internal thread; a plurality of the push rods (1) are provided, and the plurality of push rods (1) can be connected end to end through threads.

6. The receiving and sending push-pull rod frame device according to claim 5, characterized in that, At least one triangular bracket (2) is provided, and at least one triangular bracket (2) is evenly arranged along the length direction of the push rod (1).

7. The receiving and sending push-pull rod frame device according to claim 1, characterized in that, The connecting cylinder (201) is sleeved on the outside of the push rod (1), and the support legs (202) are evenly distributed along the circumferential direction of the connecting cylinder (201).

8. The receiving and sending push-pull rod frame device according to claim 4, characterized in that, The triangular bracket (2) further includes a pin (203); the connecting cylinder (201) has a pin-through threaded hole (2011), and the pin-through threaded hole (2011) can be aligned with the push rod through hole (101); the pin (203) can penetrate into the pin-through threaded hole (2011) and the push rod through hole (101).

9. The receiving and sending push-pull rod frame device according to any one of claims 1-8, characterized in that, It further includes a push plate (3), and the push plate (3) is installed at the end of the push rod (1).

10. The receiving and sending ball push-pull rod frame device according to any one of claims 1-8, characterized in that, It further includes an anti-disengagement hook (4), and the anti-disengagement hook (4) is installed at the end of the push rod (1); the anti-disengagement hook includes a disengagement hook (401), an anti-disengagement baffle (402) and a disengagement hook interface (403).

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