A method and apparatus for power conduit stress adjustment

Abstract

The application discloses a kind of electric power pipeline stress adjustment method and device, including corrugated pipe and limiting mechanism;Corrugated pipe: its outer arc surface left and right ends are equipped with connecting disc, the right side of connecting disc is equipped with connecting hole, the outer arc surface of connecting disc is annularly provided with limiting plate, the inside of limiting plate is equipped with limiting sliding hole, the corresponding two limiting sliding holes between horizontal position are slidably connected with limiting screw;Limiting mechanism: it is installed between the outer arc surface of limiting screw respectively, limiting screw is threadedly connected with limiting mechanism respectively, the limiting mechanism includes threaded sleeve, the outer arc surface of limiting screw is threadedly connected with threaded sleeve respectively, the electric power pipeline stress adjustment device, ensure that the moving distance of multiple threaded sleeves used in cooperation is same, improve the limiting effect of the expansion range of corrugated pipe, make the adjustment of limiting component more accurate, reduce the time required for limiting component adjustment, facilitate the use of overall device.

Description

Technical Field

[0001] This invention relates to the field of pipeline stress adjustment technology, specifically to a method and apparatus for adjusting the stress of power pipelines. Background Technology

[0002] The function of power conduits is to protect power system cables from external environmental interference and damage, ensuring the safe operation of lines and eliminating many potential safety hazards. Due to their high structural strength, power conduits can be installed in various ways, such as underground or overhead installations, indoor or outdoor installations, etc. Furthermore, there are many types of power conduits, making their application very widespread, used in various industries. In existing technology, patent publication number CN211951850U discloses a corrugated pipe compensator, including a corrugated pipe... The corrugated pipe has a connecting sleeve at its upper and lower ends, and a flange is fixedly fitted on the outer circumference of the connecting sleeve. An inner rubber ring is provided in the groove on the inner wall of the corrugated pipe, and an outer rubber ring is provided in the groove on the outer wall of the corrugated pipe. Although this can adjust the stress of the pipe and effectively prevent stress concentration, thereby preventing pipe wall cracks, it is not convenient to adjust the limiting components of the corrugated pipe's expansion range during installation. It requires the operator to rotate the limiting nuts one by one, which takes a long time and cannot guarantee that the multiple limiting nuts used together move the same distance, affecting the limiting effect on the expansion range of the corrugated pipe. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a method and device for adjusting the stress of power pipelines, so that the multiple threaded bushings used in combination move the same distance, improve the limiting effect on the expansion and contraction range of the corrugated pipe, make the adjustment of the limiting component more accurate, and reduce the time required for the adjustment of the limiting component, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a stress adjustment device for power pipelines, comprising a corrugated pipe and a limiting mechanism;

[0005] Corrugated pipe: Both ends of its outer arc surface are provided with connecting plates, and the right side of the connecting plates is provided with connecting holes. The outer arc surface of the connecting plates is provided with limit plates in a ring. The inside of the limit plates is provided with limit sliding holes. Limit screws are slidably connected between the two limit sliding holes corresponding to the lateral position.

[0006] Limiting mechanisms: These are installed between the outer arc surfaces of the limiting screws. The limiting screws are threadedly connected to the limiting mechanisms, allowing multiple threaded sleeves to move simultaneously. This ensures that the moving distances of the multiple threaded sleeves used in conjunction are the same, improving the limiting effect on the expansion and contraction range of the bellows. It also facilitates the adjustment of the limiting components, making the adjustment of the limiting components more accurate, reducing the time required for adjusting the limiting components, and making the overall device easier to use.

[0007] Furthermore, the limiting mechanism includes threaded sleeves, which are threadedly connected to the outer arc surface of the limiting screw. Two adjacent threaded sleeves located on the same limiting screw form a group, and the two threaded sleeves in the same group are both in contact with the side of a limiting plate to limit the position between the limiting screw and the limiting plate.

[0008] Furthermore, the limiting mechanism also includes an external toothed ring, an internal toothed ring, a bearing, a rotating ring, and a connecting ring. The external toothed rings are respectively disposed in the middle of the outer arc surface of the threaded sleeve. The outer arc surfaces of the threaded sleeves located in the same vertical longitudinal plane are all rotatably connected to the circular hole inside a connecting ring through the bearing. The middle of the outer arc surface of the connecting ring is provided with a rotating groove, and the internal toothed ring is rotatably connected inside the rotating groove. The internal toothed rings are respectively meshed with the adjacent external toothed rings. The outer arc surface of the internal toothed rings is provided with a rotating ring, and the inner arc surface of the rotating ring is respectively rotatably connected to the outer arc surface of the adjacent connecting ring. This makes the threaded sleeves located in the same vertical longitudinal plane move the same distance, thereby improving the limiting effect on the expansion and contraction range of the bellows.

[0009] Furthermore, the left and right ends of the corrugated pipe protrude from the interior of the connecting plate, providing guiding support for the connection between the connecting plate and the power pipeline.

[0010] Furthermore, each of the connecting rings has a hole on its front surface, and a scale post is inserted between the holes corresponding to the lateral positions to facilitate the determination of the movement distance of the limiting component.

[0011] Furthermore, the outer arc surface of the connecting ring is provided with sliding grooves, and sliding columns are slidably connected inside the sliding grooves. Springs are provided between the side of the sliding column near the bellows and the inner wall of the sliding groove. The end of the sliding column away from the bellows is rounded to prevent the internal toothed ring from rotating arbitrarily.

[0012] Furthermore, the outer arc surface of the limiting screw is provided with a sliding groove, and the inner arc surface of the limiting sliding hole is provided with a slider. The slider is laterally slidably connected to the adjacent sliding groove to restrict the rotation of the limiting screw.

[0013] A method for stress adjustment in power pipelines includes the following steps:

[0014] (1) Install the regulating device, pass the external bolts through the connection hole, and connect the power pipe to the regulating device through the connecting plate;

[0015] (2) Adjusting the stress in the power pipeline: By rotating the inner gear ring through the rotating ring, the circular hole at the eccentric end of the connecting ring rotates relative to the threaded sleeve. The threaded sleeve is threadedly connected to the limiting screw, thus restricting the rotation of the connecting ring. Through the meshing connection between the inner and outer gear rings, the threaded sleeve located in the same vertical longitudinal plane rotates synchronously. Through the threaded connection between the threaded sleeve and the limiting screw, the threaded sleeve moves left and right on the outer arc surface of the limiting screw. Based on the magnitude of the stress generated during the use of the power pipeline, the threaded sleeve is adjusted to a suitable position, thus adjusting the range of expansion and contraction of the corrugated pipe. Line restriction; during adjustment, the slider is laterally slidably connected to the adjacent slide groove, restricting the rotation of the limit screw in the limit slide hole. There is no need to restrict the rotation of the limit screw, and the threaded sleeve can be moved with one hand. According to the change of the position of the connecting ring on the outer arc surface of the scale column, the distance of movement can be easily determined. At the same time, when the internal gear ring rotates, it is necessary to overcome the elastic force of the spring to make the slide column retract into the sliding groove, increasing the force required for rotation and preventing the internal gear ring from rotating arbitrarily. During use, the stress of the power pipeline is adjusted by the expansion and contraction deformation of the bellows.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This power pipeline stress adjustment device has the following advantages:

[0017] 1. During installation, rotating the internal gear ring, through the meshing connection between the internal and external gear rings, drives the threaded sleeve located in the same vertical longitudinal plane to rotate synchronously, causing the threaded sleeve to move left and right on the outer arc surface of the limiting screw. According to the magnitude of the stress generated during the use of the power pipeline, the threaded sleeve is adjusted to a suitable position to limit the expansion and contraction range of the corrugated pipe. During use, the expansion and contraction deformation of the corrugated pipe adjusts the stress inside the power pipeline. Multiple threaded sleeves can be moved simultaneously to ensure that the movement distance of multiple threaded sleeves used in conjunction is the same, thereby improving the limiting effect of the expansion and contraction range of the corrugated pipe.

[0018] 2. During adjustment, the slider slides laterally with the adjacent groove, restricting the rotation of the limiting screw within the limiting groove. This eliminates the need to restrict the rotation of the limiting screw, allowing for single-handed movement of the threaded sleeve. The distance of movement is easily determined by observing the position of the connecting ring on the outer arc surface of the scale column. Simultaneously, the rotation of the internal gear ring requires overcoming the spring force to retract the sliding column into the groove, increasing the force required for rotation and preventing uncontrolled rotation of the internal gear ring. This facilitates adjustment of the limiting components, making the adjustment more accurate and reducing the time required for adjustment, thus simplifying the use of the entire device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a power pipeline stress adjustment device according to the present invention;

[0020] Figure 2 This is a schematic diagram of the limiting screw of a power pipeline stress adjustment device according to the present invention;

[0021] Figure 3 This is a schematic diagram of the limiting mechanism of a power pipeline stress adjustment device according to the present invention;

[0022] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle;

[0023] Figure 5 for Figure 3 Enlarged structural diagram at point B.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Bellows, 2. Connecting disc, 3. Connecting hole, 4. Limiting plate, 5. Limiting sliding hole, 6. Limiting screw, 7. Limiting mechanism, 71. Threaded sleeve, 72. External toothed ring, 73. Internal toothed ring, 74. Bearing, 75. Rotating ring, 76. Connecting ring, 8. Slider, 9. Sliding groove, 10. Scale column, 11. Sliding column, 12. Spring, 13. Sliding groove. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figure 1-5 The present invention provides the following technical solutions:

[0028] Example 1: A stress adjustment device for power pipelines, comprising a corrugated pipe 1 and a limiting mechanism 7;

[0029] Corrugated pipe 1: Connecting discs 2 are provided at both ends of its outer arc surface. The stress inside the power pipeline is adjusted by the expansion and contraction of the corrugated pipe 1. Connecting holes 3 are provided on the right side of the connecting discs 2. External bolts are passed through the connecting holes 3 and the power pipeline is connected to the overall device through the connecting discs 2. Limiting plates 4 are provided in a ring on the outer arc surface of the connecting discs 2. Limiting sliding holes 5 are provided inside the limiting plates 4. Limiting screws 6 are slidably connected between two limiting sliding holes 5 in the lateral position. The distance between the two limiting plates 4 is limited by the limiting screws 6 to prevent the corrugated pipe 1 from being damaged by external forces during transportation. The left and right ends of the corrugated pipe 1 protrude from the inside of the connecting discs 2 to provide guiding support for the connection between the connecting discs 2 and the power pipeline.

[0030] Limiting mechanism 7: It is installed between the outer arc surfaces of the limiting screws 6 respectively. The limiting screws 6 are threadedly connected to the limiting mechanism 7 respectively, and the position between the limiting plate 4 and the limiting screws 6 is limited.

[0031] Example 2:

[0032] The difference between this embodiment and Embodiment 1 is that:

[0033] In this embodiment, the limiting mechanism 7 includes threaded sleeves 71, which are threadedly connected to the outer arc surface of the limiting screw 6. Two adjacent threaded sleeves 71 located on the same limiting screw 6 form a group. Both threaded sleeves 71 in the same group are in contact with the side of a limiting plate 4. The limiting mechanism 7 also includes an external toothed ring 72, an internal toothed ring 73, a bearing 74, a rotating ring 75, and a connecting ring 76. The external toothed rings 72 are respectively disposed in the middle of the outer arc surface of the threaded sleeves 71. The outer arc surfaces of the threaded sleeves 71 located in the same vertical longitudinal plane are rotatably connected to the circular holes inside a connecting ring 76 through the bearing 74. The middle of the outer arc surface of the connecting ring 76 is provided with a rotating groove. The internal toothed rings 73 are rotatably connected inside the rotating grooves. The internal toothed rings 73 are respectively meshed with the adjacent external toothed rings 72. The outer arc surface of the internal toothed rings 73 is provided with a rotating ring 75. The inner arc surface of the rotating ring 75 is rotatably connected to the outer arc surface of the adjacent connecting ring 76.

[0034] Specifically, this setup involves rotating the internal gear ring 73 via the rotating ring 75. Because the circular hole at the eccentric end of the connecting ring 76 rotates relative to the threaded sleeve 71, the threaded sleeve 71 is threadedly connected to the limiting screw 6, thereby restricting the rotation of the connecting ring 76. Through the meshing connection between the internal gear ring 73 and the external gear ring 72, the threaded sleeve 71 located in the same vertical longitudinal plane is driven to rotate synchronously. Through the threaded connection between the threaded sleeve 71 and the limiting screw 6, the threaded sleeve 71 is driven to move left and right on the outer arc surface of the limiting screw 6. According to the magnitude of the stress generated during the use of the power pipeline, the threaded sleeve 71 is adjusted to a suitable position to limit the expansion and contraction range of the corrugated pipe 1.

[0035] Example 3:

[0036] The difference between this embodiment and Embodiment 1 is that:

[0037] In this embodiment, the front surface of the connecting ring 76 is provided with insertion holes, and scale posts 10 are inserted between the insertion holes corresponding to the lateral positions. The outer arc surface of the connecting ring 76 is provided with sliding grooves 13, and sliding posts 11 are slidably connected inside the sliding grooves 13. Springs 12 are provided between the side of the sliding post 11 near the bellows 1 and the inner wall of the sliding groove 13. The end of the sliding post 11 away from the bellows 1 is rounded. The outer arc surface of the limiting screw 6 is provided with sliding grooves 9, and the inner arc surface of the limiting sliding hole 5 is provided with sliders 8. The sliders 8 are slidably connected laterally to the adjacent sliding grooves 9.

[0038] Specifically, this configuration allows for lateral sliding connection between the slider 8 and the adjacent slide groove 9 during adjustment, restricting the rotation of the limiting screw 6 within the limiting slide hole 5. This eliminates the need to restrict the rotation of the limiting screw 6, enabling the threaded sleeve 71 to be moved with one hand. The change in position of the connecting ring 76 on the outer arc surface of the scale column 10 facilitates the determination of the movement distance. Simultaneously, when the internal gear ring 73 rotates, it needs to overcome the elastic force of the spring 12, causing the slide column 11 to retract into the slide groove 13, increasing the force required for rotation and preventing the internal gear ring 73 from rotating arbitrarily. This facilitates the rotation of the threaded sleeve 71, making its position movement more accurate and convenient, and reducing the time required to move the threaded sleeve 71 to the designated position.

[0039] The working principle of the power pipeline stress adjustment device provided by this invention is as follows: During installation, external bolts are passed through the connecting hole 3, and the power pipeline is connected to the overall device through the connecting plate 2. The internal gear ring 73 is rotated by the rotating ring 75. Because the circular hole at the eccentric end of the connecting ring 76 rotates relative to the threaded sleeve 71, the threaded sleeve 71 is threadedly connected to the limiting screw 6, thereby restricting the rotation of the connecting ring 76. Through the meshing connection between the internal gear ring 73 and the external gear ring 72, the threaded sleeve 71 located in the same vertical longitudinal plane is driven to rotate synchronously. Through the threaded connection between the threaded sleeve 71 and the limiting screw 6, the threaded sleeve 71 is driven to move left and right on the outer arc surface of the limiting screw 6, according to the stress generated during the use of the power pipeline. The threaded sleeve 71 is adjusted to a suitable position to limit the range of expansion and contraction of the bellows 1. During the adjustment process, the slider 8 is laterally slidably connected to the adjacent slide groove 9 to limit the rotation of the limiting screw 6 in the limiting slide hole 5. There is no need to limit the rotation of the limiting screw 6, and the threaded sleeve 71 can be moved with one hand. According to the change of the position of the connecting ring 76 on the outer arc surface of the scale column 10, the distance of movement can be easily determined. At the same time, when the internal toothed ring 73 rotates, it needs to overcome the elastic force of the spring 12 to make the slide column 11 retract into the sliding groove 13, increase the force required for rotation, and prevent the internal toothed ring 73 from rotating arbitrarily. In use, the stress of the power pipeline is adjusted by the expansion and contraction deformation of the bellows 1.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A power conduit stress adjustment device, characterized by, Corrugated pipe (1) and limiting mechanism (7) are included. The outer arc surface of the connecting disc (2) is annularly provided with a limiting plate (4), the inside of the limiting plate (4) is provided with a limiting sliding hole (5), and the transverse position corresponding two limiting sliding holes (5) are slidably connected with a limiting screw (6). The limiting mechanism (7) is respectively installed between the outer arc surfaces of the limiting screw (6), and the limiting screw (6) is in threaded connection with the limiting mechanism (7). The limiting mechanism (7) includes a threaded sleeve (71), the threaded sleeve (71) is in threaded connection with the outer arc surface of the limiting screw (6), two threaded sleeves (71) located on the same limiting screw (6) and adjacent to each other form a group, and the two threaded sleeves (71) in the same group are attached to the side surface of one limiting plate (4). The limiting mechanism (7) further includes an outer gear ring (72), an inner gear ring (73), a bearing (74), a rotating ring (75) and a connecting ring (76), the outer gear ring (72) is arranged in the middle of the outer arc surface of the threaded sleeve (71), the outer arc surfaces of the threaded sleeves (71) located in the same vertical longitudinal plane are rotatably connected with the circular holes in the inside of one connecting ring (76) through the bearing (74), the middle of the outer arc surface of the connecting ring (76) is provided with a rotating groove, the inside of the rotating groove is rotatably connected with the inner gear ring (73), the inner gear ring (73) is in meshing connection with the adjacent outer gear ring (72), the outer arc surface of the inner gear ring (73) is provided with the rotating ring (75), and the inner arc surface of the rotating ring (75) is rotatably connected with the outer arc surface of the adjacent connecting ring (76). The outer arc surface of the limiting screw (6) is provided with a sliding groove (9), and the inner arc surface of the limiting sliding hole (5) is provided with a sliding block (8).

2. A power conduit stress mitigation device according to claim 1, wherein, The left and right ends of the corrugated pipe (1) protrude into the inside of the connecting disc (2).

3. A power conduit stress mitigation device according to claim 2, wherein, The front surface of the connecting ring (76) is provided with a plug hole, and the plug holes corresponding in transverse position are inserted with a scale column (10).

4. A power conduit stress mitigation device according to claim 3, wherein, The outer arc surface of the connecting ring (76) is provided with a sliding groove (13), the inside of the sliding groove (13) is slidably connected with a sliding column (11), and the side surface of the sliding column (11) close to the corrugated pipe (1) and the inner wall of the sliding groove (13) are provided with a spring (12).

5. A power conduit stress mitigation device according to claim 4, wherein, The end of the sliding column (11) away from the corrugated pipe (1) is a rounded corner structure.

6. A method of using the power conduit stress adjustment device of claim 5 to adjust the stress of a power conduit, characterized by, The following steps are included: (1) Install the adjusting device, pass the external bolt through the connecting hole (3), and connect the power pipeline with the adjusting device through the connecting disc (2). (2) Adjust the stress of the power pipeline, rotate the inner tooth ring (73) through the rotating ring (75), because the circular hole of the eccentric end of the connecting ring (76) is relatively rotated with the threaded sleeve (71), the threaded sleeve (71) is screwed with the limiting screw rod (6), thereby limiting the rotation of the connecting ring (76), through the meshing connection of the inner tooth ring (73) and the outer tooth ring (72), the threaded sleeve (71) located in the same vertical longitudinal plane is driven to rotate synchronously, through the threaded connection of the threaded sleeve (71) and the limiting screw rod (6), the threaded sleeve (71) is driven to move left and right on the outer arc surface of the limiting screw rod (6), according to the size of the stress generated in the use process of the power pipeline, adjust the threaded sleeve (71) to the appropriate position, limit the expansion range of the corrugated pipe (1); In the process of adjusting, through the transverse sliding connection of the sliding block (8) and the adjacent sliding groove (9), the rotation of the limiting screw rod (6) in the limiting sliding hole (5) is limited, without limiting the rotation of the limiting screw rod (6), one hand can realize the movement of the threaded sleeve (71), according to the change of the position of the connecting ring (76) on the outer arc surface of the scale column (10), it is convenient to determine the distance of movement, at the same time, when the inner tooth ring (73) rotates, overcome the elastic force of the spring (12), make the sliding column (11) fold to the inside of the sliding groove (13), increase the required force of rotation, avoid the wanton rotation of the inner tooth ring (73), in use, through the expansion and deformation of the corrugated pipe (1), the stress inside the power pipeline is adjusted.

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