A cable protection tube sealing structure

The design of the locking assembly simplifies the connection process of the cable protection pipe, solves the problem of cumbersome flange locking, and achieves fast, stable connection and enhanced sealing.

CN224401073UActive Publication Date: 2026-06-23NANJING FUTAI ELECTRICAL EQUIPMENT CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NANJING FUTAI ELECTRICAL EQUIPMENT CO LTD
Filing Date
2025-07-01
Publication Date
2026-06-23

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    Figure CN224401073U_ABST
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Abstract

The utility model discloses a cable protection tube sealing structure relates to cable protection tube field, the utility model discloses a first protection tube and second protection tube, one end of first protection tube is installed with first sealing disc, and one end of second protection tube is installed with second sealing disc. The utility model discloses through being provided with locking assembly, when needing to connect first protection tube and second protection tube, staff can insert one end of second protection tube to first sealing disc inside, make the positioning column pass through the positioning hole simultaneously to the positioning of first sealing disc and second sealing disc, and when second protection tube inserts and completes, staff can rotate the swivel joint counterclockwise through the swivel block, and the swivel joint rotation will drive multiple clamping plates to rotate, make clamping plate rotate into the inside of the card slot to hold up the positioning column, and staff no longer rotate the swivel block after clamping plate rotation and complete, and then improve the stability of swivel block and swivel joint, and prevent clamping plate from rotating out.
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Description

Technical Field

[0001] This utility model relates to the field of cable protection pipes, specifically a sealing structure for cable protection pipes. Background Technology

[0002] As the core transmission carrier of power, communication and other systems, the safe and stable operation of cables is of paramount importance. Cable protection pipes are key supporting facilities to ensure the performance and lifespan of cables. Their main function is to prevent external factors (such as moisture, mud, sand, and debris) from entering and to ensure the safe operation of cables. The sealing structure of the cable protection pipe is used to connect and seal two protection pipes.

[0003] According to Chinese Patent No. CN217882686U, a sealing structure for cable protection pipes is disclosed. This utility model uses the cooperation of a locking block and a locking groove to limit the second flange and prevent it from moving during connection. It also uses a sealing ring to seal the first and second flanges to prevent rainwater from seeping into the pipe. This utility model divides the mounting ring into four small squares using horizontal and vertical plates, allowing the cable to pass through each small square to distinguish the cables. Furthermore, the clamping plate limits the cable position, ensuring that the cable is located in the center of the small square.

[0004] Regarding the aforementioned patent content, a flange is provided to connect and seal the first and second protective pipes. However, the flange has multiple screw holes. When installing the flange, multiple bolts need to be screwed into the corresponding screw holes, and then multiple nuts need to be screwed onto the bolts to achieve the purpose of locking. However, this locking operation is relatively troublesome and takes a lot of time, thereby reducing the connection efficiency of the first and second protective pipes. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a cable protection pipe sealing structure to solve the technical problem of inconvenience in quickly connecting the first protection pipe and the second protection pipe.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cable protection pipe sealing structure, comprising a first protection pipe and a second protection pipe, wherein a first sealing disc is installed at one end of the first protection pipe and a second sealing disc is installed at one end of the second protection pipe, a locking assembly is provided between the first sealing disc and the second sealing disc, and the locking assembly includes multiple positioning holes opened on the second sealing disc, an annular groove opened on one side of the second sealing disc and multiple positioning posts installed on one side of the first sealing disc, wherein a slot is passed through the positioning post, a slip ring is provided inside the annular groove, a rotating ring is fixed on one side of the slip ring, and multiple locking plates are installed on the rotating ring, and a rotating block is installed inside the rotating ring, wherein a first sealing ring is provided on the inner wall of the first sealing disc.

[0007] By adopting the above technical solution, when it is necessary to rotate the card plate, the operator can rotate the rotating block, which will drive the rotating ring to rotate. The rotation of the rotating ring will drive multiple card plates to rotate, so that the card plates can be rotated out of the card slot or into the card slot.

[0008] Furthermore, the locking assembly also includes screw holes opened inside the first sealing disc and the second sealing disc, and a locking bolt extending into the screw hole is installed on the rotating block, and a self-locking nut is sleeved on one end of the locking bolt, with one side of the self-locking nut fitting against the first sealing disc.

[0009] By adopting the above technical solution, when the locking bolt is screwed into the screw hole, the first sealing disc and the second sealing disc can be locked and limited, thereby improving the stability of the first sealing disc and the second sealing disc.

[0010] Furthermore, the locking assembly also includes a limiting block installed on one side of the second sealing disc, the limiting block being in contact with the rotating block.

[0011] By adopting the above technical solution, the limit block can play a limiting role and prevent excessive rotation when the rotating block is reset.

[0012] Furthermore, a second sealing ring is provided on the other side of the second sealing disc, and one side of the second sealing ring is in contact with the first sealing disc.

[0013] By adopting the above technical solution, the second sealing ring can improve the sealing performance between the first sealing disc and the second sealing disc.

[0014] Furthermore, the inner wall of the first sealing ring is fitted with the outer wall of the second protective tube, and both the first and second sealing rings are made of EPDM rubber.

[0015] By adopting the above technical solution, the sealing performance at the connection between the first protective pipe and the second protective pipe can be improved.

[0016] Furthermore, the outer wall of the card plate is provided with an anti-slip pad, which is made of EPDM rubber material and is in contact with the inner wall of the card slot.

[0017] By adopting the above technical solution, the anti-slip pad can improve the stability of the card plate when it is inserted into the card slot.

[0018] Furthermore, the number of positioning pins is the same as the number of positioning holes, and the positioning pins are adapted to the positioning holes.

[0019] By adopting the above technical solution, the first sealing disc and the second sealing disc can be positioned after the positioning pin is inserted into the positioning hole.

[0020] Furthermore, the number of the card plates is the same as the number of the card slots, and the card plates are adapted to the card slots.

[0021] By adopting the above technical solution, once the card plate is inserted into the card slot, the positioning post can be clamped and limited to prevent it from moving arbitrarily.

[0022] Furthermore, the slip ring is slidably connected to the annular groove, and the thickness of the rotating block is greater than the thickness of the rotating ring.

[0023] By adopting the above technical solution, the slip ring can slide inside the annular groove, thereby improving the stability of the rotating ring.

[0024] Furthermore, the first sealing disc is fitted with the second sealing disc, and one end of the second protective tube is located inside the first sealing disc.

[0025] By adopting the above technical solution, it is convenient to connect the first protective tube and the second protective tube.

[0026] In summary, the present invention has the following main advantages:

[0027] 1. This utility model, by providing a locking assembly, allows the operator to insert one end of the second protective tube into the first sealing disc when connecting the first and second protective tubes. Simultaneously, the positioning pin passes through the positioning hole to position the first and second sealing discs. After the second protective tube is inserted, the operator can rotate the rotating block counterclockwise. This rotation causes multiple locking plates to rotate, allowing them to engage with the positioning pin. Once engaged, the operator can then screw the locking bolt into the bolt hole to lock the rotating block, thus improving the stability of the rotating block and the rotating ring, preventing the locking plates from disengaging, and ensuring a secure hold on the positioning pin. This enhances the stability of the connection between the first and second sealing discs. Furthermore, this method requires only one locking bolt, simplifying the installation process and shortening the installation time, thereby improving the connection efficiency between the first and second sealing discs.

[0028] 2. This utility model is equipped with an anti-slip pad. After the card plate is inserted into the card slot, the anti-slip pad will stick to the inner wall of the card slot, thereby improving the stability of the card plate. By being equipped with a slip ring and an annular groove, when the rotating ring rotates, it will drive the slip ring to slide inside the annular groove, thereby improving the stability of the rotating ring when it rotates.

[0029] 3. By setting a limiting block, the rotating block can no longer rotate after it comes into contact with the limiting block. This allows the limiting block to limit the rotating block, so that the locking bolt can be accurately aligned with the screw hole, thus facilitating the subsequent screwing in of the locking bolt. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0031] Figure 2 This is a schematic diagram of the first sealing disc structure of this utility model;

[0032] Figure 3 This is a schematic diagram of the overall orthographic structure of this utility model;

[0033] Figure 4 This is a schematic diagram of the side structure of the second sealing disc of this utility model;

[0034] Figure 5 This is a schematic diagram of the rotating ring structure of this utility model;

[0035] Figure 6 This is a schematic diagram of the card plate structure of this utility model;

[0036] Figure 7 This is a schematic diagram of the rotating block structure of this utility model.

[0037] In the diagram: 1. First protective tube; 2. First sealing disc; 3. Second protective tube; 4. Second sealing disc; 5. First sealing ring; 6. Second sealing ring; 7. Locking assembly; 701. Annular groove; 702. Slip ring; 703. Positioning hole; 704. Positioning pin; 705. Rotary ring; 706. Slot; 707. Slot plate; 708. Anti-slip pad; 709. Rotating block; 710. Locking bolt; 711. Limiting block; 712. Screw hole; 713. Self-locking nut. Detailed Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0039] The embodiments of this utility model will be described below based on its overall structure.

[0040] Example 1:

[0041] A cable protection pipe sealing structure, such as Figures 1-7As shown, it includes a first protective tube 1 and a second protective tube 3. A first sealing disc 2 is installed at one end of the first protective tube 1, and a second sealing disc 4 is installed at one end of the second protective tube 3. A locking assembly 7 is provided between the first sealing disc 2 and the second sealing disc 4. The locking assembly 7 includes multiple positioning holes 703 opened on the second sealing disc 4, an annular groove 701 opened on one side of the second sealing disc 4, and multiple positioning posts 704 installed on one side of the first sealing disc 2. A slot 706 passes through the positioning post 704. A slip ring 702 is provided inside the annular groove 701. A rotating ring 705 is fixed on one side of the slip ring 702. Multiple locking plates 707 are installed on the rotating ring 705, and a rotating block 709 is installed inside the rotating ring 705.

[0042] Specifically, the inner wall of the first sealing disc 2 is provided with a first sealing ring 5. When the card plate 707 needs to be rotated, the operator can rotate the rotating block 709, which in turn drives the rotating ring 705 to rotate. The rotation of the rotating ring 705 will drive multiple card plates 707 to rotate, so that the card plates 707 can rotate out of or into the card slot 706. The other side of the second sealing disc 4 is provided with a second sealing ring 6, and one side of the second sealing ring 6 is in contact with the first sealing disc 2. The setting of the second sealing ring 6 can improve the sealing performance between the first sealing disc 2 and the second sealing disc 4. The inner wall of the first sealing ring 5 is in contact with the outer wall of the second protective tube 3. Both the first sealing ring 5 and the second sealing ring 6 are made of EPDM rubber material to improve the sealing performance at the connection between the first protective tube 1 and the second protective tube 3. The number of positioning pins 704 is the same as the number of positioning holes 703. The positioning pins 704 are adapted to the positioning holes 703. When the positioning pins 704 are inserted into the positioning holes 703, the first sealing disc 2 and the second sealing disc 4 can be positioned.

[0043] See Figures 2-7 The number of card plates 707 is the same as the number of card slots 706. The card plates 707 are adapted to the card slots 706. When the card plates 707 are inserted into the card slots 706, they can clamp and limit the positioning post 704 to prevent the positioning post 704 from moving at will. The slip ring 702 is slidably connected to the annular groove 701. The thickness of the rotating block 709 is greater than the thickness of the rotating ring 705, which allows the slip ring 702 to slide inside the annular groove 701, thereby improving the stability of the rotating ring 705 when it rotates. The first sealing disc 2 and the second sealing disc 4 are fitted together. One end of the second protective tube 3 is located inside the first sealing disc 2, which facilitates the connection of the first protective tube 1 and the second protective tube 3.

[0044] Example 2:

[0045] Based on the above embodiment 1, in order to improve the stability of the first sealing disk 2 and the second sealing disk 4, the following structure will be set.

[0046] Specifically, the locking assembly 7 also includes a screw hole 712 opened inside the first sealing disc 2 and the second sealing disc 4. A locking bolt 710 extending into the screw hole 712 is installed on the rotating block 709, and a self-locking nut 713 is sleeved on one end of the locking bolt 710. One side of the self-locking nut 713 is in contact with the first sealing disc 2. When the locking bolt 710 is screwed into the screw hole 712, the first sealing disc 2 and the second sealing disc 4 can be locked and limited, thereby improving the stability of the first sealing disc 2 and the second sealing disc 4.

[0047] Example 3:

[0048] Based on the above embodiment 1, the following structure will be set to prevent the rotating block 709 from rotating excessively.

[0049] Specifically, the locking assembly 7 also includes a limiting block 711 installed on one side of the second sealing disc 4. The limiting block 711 contacts the rotating block 709 and can limit the rotation to prevent the rotating block 709 from rotating excessively when resetting.

[0050] Example 4:

[0051] Based on the above embodiment 1, the following structure will be set to improve the stability of the cardboard 707.

[0052] See Figures 5-7 The outer wall of the card plate 707 is provided with an anti-slip pad 708, which is made of EPDM rubber. The anti-slip pad 708 fits against the inner wall of the card slot 706. The anti-slip pad 708 can improve the stability of the card plate 707 when it is inserted into the card slot 706.

[0053] The working principle of this utility model is as follows: First, when connecting the first protective tube 1 and the second protective tube 3, the operator can insert one end of the second protective tube 3 into the first sealing disc 2, so that the positioning post 704 passes through the positioning hole 703 to position the first sealing disc 2 and the second sealing disc 4. After the second protective tube 3 is inserted, the operator can rotate the rotating ring 705 counterclockwise through the rotating block 709. The rotation of the rotating ring 705 will drive the multiple clamping plates 707 to rotate, so that the clamping plates 707 rotate into the clamping slot 706 to clamp the positioning post 704. After the clamping plates 707 have rotated into place, the operator will stop rotating. After rotating block 709, the operator can screw the locking bolt 710 into the screw hole 712 to lock the rotating block 709. Then, screw the self-locking nut 713 onto one end of the locking bolt 710 so that the self-locking nut 713 fits against the first sealing disc 2, thereby improving the stability of the rotating block 709 and the rotating ring 705 and preventing the clamping plate 707 from rotating out. This allows the clamping plate 707 to firmly clamp the positioning post 704, thereby improving the stability of the connection between the first sealing disc 2 and the second sealing disc 4. At the same time, the setting of the first sealing ring 5 and the second sealing ring 6 can improve the sealing between the first sealing disc 2 and the second sealing disc 4.

[0054] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A cable protection pipe sealing structure, comprising a first protection pipe (1) and a second protection pipe (3), characterized in that: A first sealing disc (2) is installed at one end of the first protective tube (1), and a second sealing disc (4) is installed at one end of the second protective tube (3). A locking assembly (7) is provided between the first sealing disc (2) and the second sealing disc (4). The locking assembly (7) includes multiple positioning holes (703) opened on the second sealing disc (4), an annular groove (701) opened on one side of the second sealing disc (4), and multiple positioning posts (704) installed on one side of the first sealing disc (2). A slot (706) is passed through the positioning post (704). A slip ring (702) is provided inside the annular groove (701). A rotating ring (705) is fixed on one side of the slip ring (702). Multiple locking plates (707) are installed on the rotating ring (705). A rotating block (709) is installed inside the rotating ring (705). A first sealing ring (5) is provided on the inner wall of the first sealing disc (2).

2. The cable protection pipe sealing structure according to claim 1, characterized in that: The locking assembly (7) also includes a screw hole (712) opened inside the first sealing disc (2) and the second sealing disc (4). The rotating block (709) is equipped with a locking bolt (710) extending into the screw hole (712), and a self-locking nut (713) is fitted on one end of the locking bolt (710). One side of the self-locking nut (713) is in contact with the first sealing disc (2).

3. The cable protection pipe sealing structure according to claim 1, characterized in that: The locking assembly (7) also includes a limiting block (711) installed on one side of the second sealing disc (4), the limiting block (711) being in contact with the rotating block (709).

4. The cable protection pipe sealing structure according to claim 1, characterized in that: The other side of the second sealing disc (4) is provided with a second sealing ring (6), and one side of the second sealing ring (6) is in contact with the first sealing disc (2).

5. The cable protection pipe sealing structure according to claim 1, characterized in that: The inner wall of the first sealing ring (5) is in contact with the outer wall of the second protective tube (3). Both the first sealing ring (5) and the second sealing ring (6) are made of EPDM rubber.

6. The cable protection pipe sealing structure according to claim 1, characterized in that: The outer wall of the card plate (707) is provided with an anti-slip pad (708), which is made of EPDM rubber material and is attached to the inner wall of the card slot (706).

7. The cable protection pipe sealing structure according to claim 1, characterized in that: The number of positioning pins (704) is the same as the number of positioning holes (703), and the positioning pins (704) are adapted to the positioning holes (703).

8. The cable protection pipe sealing structure according to claim 1, characterized in that: The number of the card plates (707) is the same as the number of the card slots (706), and the card plates (707) are adapted to the card slots (706).

9. The cable protection pipe sealing structure according to claim 1, characterized in that: The slip ring (702) is slidably connected to the annular groove (701), and the thickness of the rotating block (709) is greater than the thickness of the rotating ring (705).

10. The cable protection pipe sealing structure according to claim 1, characterized in that: The first sealing disc (2) is attached to the second sealing disc (4), and one end of the second protective tube (3) is located inside the first sealing disc (2).