Sealing and blocking assembly for power cable protection pipe

Abstract

The utility model relates to the technical field of cable protection pipe fittings, in particular to a sealing and blocking assembly for a power cable protection pipe. The sealing and blocking assembly for the power cable protection tube provided by the utility model solves the technical problem that the blocking assembly for the power cable protection tube in the prior art is not easy to install. The utility model discloses a sealing and blocking assembly for a power cable protection pipe. The sealing and blocking assembly comprises a pipe body and a sealing assembly arranged at the end part of the pipe body, by arranging the positioning rod and the positioning slope, the positioning rod is provided with the matching slope, when the positioning rod moves in the direction close to the center of the pipe body, the counter-acting force applied to the positioning piece by the positioning slope is divided into two component forces by the matching slope, and one component force is parallel to the axis of the pipe body, so that the whole sealing assembly moves in the direction of the middle of the pipe body; according to the scheme, the sealing assembly can be installed on the pipe body without damaging the structure of the pipe body, the sealing assembly and the pipe body are easy to assemble, and the pipe body is not prone to being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of cable protection tube accessories, in particular to a sealing and blocking component for a power cable protection tube. Background Art

[0002] Cable protection tube refers to a protective tube with a certain strength that is laid on the outer layer of the cable to prevent the cable from being damaged. With the advancement of science and technology and the improvement of human civilization, at present, power cable protection tubes are gradually changing from concrete pipes and metal steel pipes to plastic pipes that are light, cheap and easy to construct.

[0003] The power cable protection tube in the prior art usually has blocking components at both ends of the tube to seal the two ends of the power cable protection tube. However, the blocking components in the prior art have a complex structure and the ends of the power cable protection tube need to be destroyed before the blocking components can be installed, which makes the blocking components difficult to install and the power cable protection tube easily damaged.

[0004] Therefore, the blocking assembly of the power cable protection tube in the prior art has the technical problem of being difficult to install. Utility Model Content

[0005] The utility model provides a sealing blocking component for a power cable protection tube, which solves the technical problem that the blocking component of the power cable protection tube is difficult to install in the prior art.

[0006] Some implementation plans adopted to solve the above technical problems include:

[0007] A sealing and blocking assembly for a power cable protection tube, comprising a tube body and a sealing assembly arranged at the end of the tube body;

[0008] The end of the tube body is provided with a convex ring matched with the sealing assembly, and the convex ring has a positioning inclined surface on one side close to the middle of the tube body;

[0009] The sealing assembly comprises a blocking portion extending into the tube body, the blocking portion is provided with a positioning plate in contact with the end surface of the tube body, the positioning plate is provided with a cylinder, a positioning space is formed between the cylinder and the blocking portion, a part of the tube body is located in the positioning space, and the convex ring and the positioning inclined surface are completely located in the positioning space;

[0010] The cylinder is provided with a positioning rod, which is slidably arranged on the cylinder along the diameter direction of the cylinder, there are a plurality of positioning rods, the positioning rods are evenly distributed around the tube body, and the positioning rods are provided with a matching inclined surface that matches the positioning inclined surface;

[0011] The cylinder body is further provided with a positioning cylinder, which is threadedly arranged on the cylinder body, and the positioning cylinder is provided with a driving inclined surface for pushing the positioning rod to make the matching inclined surface match the positioning inclined surface.

[0012] Preferably, an elastic member is provided between the positioning rod and the cylinder body to disengage the matching inclined surface from the positioning inclined surface.

[0013] Preferably, the elastic member is located between the driving inclined surface and the cylinder.

[0014] Preferably, the elastic member is a spring, one end of the elastic member is welded to the positioning rod, and the other end of the elastic member abuts against the cylinder.

[0015] Preferably, a driving head is provided at one end of the positioning rod that contacts the driving inclined surface, and the driving head is in point contact with the driving inclined surface.

[0016] Preferably, the driving head is hemispherical, and the driving head and the positioning rod are an integrated structure.

[0017] Preferably, the outer wall of the cylinder is provided with an external thread, the positioning cylinder is provided with an internal thread, and the positioning cylinder is further provided with an operating portion for facilitating the rotation of the positioning cylinder, and the cross-sectional shape of the operating portion is polygonal.

[0018] Preferably, the cylinder body is further provided with a locking nut, and the locking nut is in contact with one end of the positioning cylinder.

[0019] Preferably, the blocking portion and the positioning plate are an integrated structure, and the cylinder and the positioning plate are an integrated structure.

[0020] Preferably, the blocking portion is provided with a blind hole for reducing the weight of the blocking portion.

[0021] Compared with the prior art, the utility model has the following advantages:

[0022] 1. By setting a positioning rod and a positioning inclined plane, the positioning rod is provided with a matching inclined plane. When the positioning rod moves toward the center of the tube body, the reaction force applied by the positioning inclined plane to the positioning member is divided into two components by the matching inclined plane, one of which is parallel to the axis of the tube body, so that the sealing assembly moves toward the middle of the tube body as a whole, thereby fixing the sealing assembly on the tube body. This solution does not require destroying the structure of the tube body, and the sealing assembly can be installed on the tube body. The sealing assembly is easy to assemble with the tube body, and the tube body is not easily damaged.

[0023] 2. By setting a positioning cylinder, the positioning is fixed to the cylinder body through threads, and the positioning cylinder is not easy to be misplaced relative to the cylinder body, thereby making the positioning rod not easy to be misplaced, and the connection performance between the sealing assembly and the pipe body has a higher stability.

[0024] 3. The positioning tube is provided with a driving inclined surface. One of the components of force applied by the driving inclined surface to the positioning rod causes the positioning rod to move toward the center of the tube body, thereby achieving the matching of the matching inclined surface and the driving inclined surface.

[0025] 4. By providing a blocking portion and extending the blocking portion into the tube body, the blocking portion is used to support the tube body, and the tube body can withstand a greater force without deformation, further making the tube body less susceptible to damage.

[0026] 5. The provision of the convex ring improves the strength of the end of the tube body, making it easy to assemble the tube body with the sealing assembly, and making the end of the tube body less prone to damage, thereby extending the service life of the tube body. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] For the purpose of explanation, several embodiments of the present utility model technology are described in the following drawings. The following drawings are incorporated into this text and constitute a part of the specific embodiment. In some cases, well-known structures and components are shown in block diagram form to avoid blurring the concept of the present utility model subject technology.

[0028] Figure 1 It is a schematic diagram of the internal structure of the utility model.

[0029] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0030] Figure 3 It is a schematic diagram of the utility model.

[0031] Figure 4 It is an exploded view of the utility model.

[0032] Figure 5 A schematic diagram of the blocking portion.

[0033] Figure 6 A schematic diagram of the tube body.

[0034] In the figure:

[0035] 1. Pipe body, 11. Protruding ring, 111. Positioning slope.

[0036] 2. Sealing assembly, 21. Blocking portion, 211. Positioning plate, 212. Cylinder, 213. Blind hole, 22. Positioning space, 23. Positioning rod, 231. Matching slope, 232. Driving head, 24. Positioning cylinder, 241. Driving slope, 242. Operating portion, 25. Elastic member, 26. Anti-loosening nut. DETAILED DESCRIPTION

[0037] The specific embodiments shown below are intended to be descriptions of various configurations of the subject technology of the present invention, and are not intended to represent the only configuration in which the subject technology of the present invention can be practiced. The specific embodiments include specific details intended to provide a thorough understanding of the subject technology of the present invention. However, it will be clear and obvious to those skilled in the art that the subject technology of the present invention is not limited to the specific details shown herein, and can be practiced without these specific details.

[0038] Reference Figures 1 to 6 As shown, a sealing and blocking assembly for a power cable protection tube comprises a tube body 1 and a sealing assembly 2 arranged at the end of the tube body 1;

[0039] The end of the tube body 1 is provided with a convex ring 11 that cooperates with the sealing assembly 2, and the convex ring 11 has a positioning inclined surface 111 on one side close to the middle of the tube body 1;

[0040] The sealing assembly 2 includes a blocking portion 21 extending into the tube body 1, the blocking portion 21 is provided with a positioning plate 211 in contact with the end surface of the tube body 1, the positioning plate 211 is provided with a cylinder 212, and a positioning space 22 is formed between the cylinder 212 and the blocking portion 21, a part of the tube body 1 is located in the positioning space 22, and the convex ring 11 and the positioning inclined surface 111 are completely located in the positioning space 22;

[0041] The cylinder 212 is provided with a positioning rod 23, and the positioning rod 23 is slidably arranged on the cylinder 212 along the diameter direction of the cylinder 212. There are multiple positioning rods 23, and the positioning rods 23 are evenly distributed around the tube body 1. The positioning rod 23 is provided with a matching inclined surface 231 that matches the positioning inclined surface 111;

[0042] The cylinder body 212 is further provided with a positioning cylinder 24 , which is threadedly provided on the cylinder body 212 . The positioning cylinder 24 is provided with a driving inclined surface 241 for pushing the positioning rod 23 to make the matching inclined surface 231 match with the positioning inclined surface 111 .

[0043] In actual application, the blocking portion 21 is inserted into the tube body 1 so that the positioning plate 211 contacts the end surface of the tube body 1 . At this time, the cylinder 212 is sleeved outside the tube body 1 , and a part of the tube body 1 is located in the positioning space 22 .

[0044] The positioning rod 23 is inserted into the cylinder 212, and a socket matching the positioning rod 23 is provided on the cylinder 212, wherein the end of the convex ring 11 close to the end face of the tube body 1 is the outer side, and the end of the convex ring 11 opposite to the outer side is the inner side.

[0045] The positioning bevel 111 is disposed inside the protruding ring 11, and the matching bevel 231 of the positioning rod 23 contacts the positioning bevel 111. The height of the end of the positioning bevel 111 close to the outside is greater than the height of the end of the positioning bevel 111 away from the outside.

[0046] The positioning cylinder 24 is installed on the cylinder body 212. The positioning cylinder 24 is rotated to move in the direction away from the outer side of the convex ring 11. At this time, the driving inclined surface 241 of the positioning cylinder 24 contacts the positioning rod 23, and the positioning cylinder 24 continues to move. The force applied by the driving inclined surface 241 to the positioning rod 23 is divided into two components, one of which is parallel to the axis of the tube body 1, and the other is perpendicular to the axis of the tube body 1. The component perpendicular to the axis of the tube body 1 pushes the positioning rod 23 to move toward the center of the tube body 1.

[0047] When the positioning rod 23 moves toward the center of the tube body 1, the force applied by the matching inclined surface 231 to the positioning inclined surface 111 is divided into two components, one of which is parallel to the axis of the tube body 1, and the other is perpendicular to the axis of the tube body 1. The component parallel to the axis of the tube body 1 makes the positioning rod 23, the cylinder 212, and the positioning direction, the blocking part 21, and the positioning plate 211 move toward the middle of the axis of the tube body 1, so that the blocking part 21 and the positioning plate 211 can effectively contact with the tube body 1, and the sealing assembly 2 as a whole is not easy to fall off from the tube body 1.

[0048] The blocking portion 21 matches the inner diameter of the tube body 1 , and is used to support the end region of the tube body 1 to prevent the end of the tube body 1 from being deformed, thereby causing damage or failure of the tube body 1 .

[0049] Reference Figures 1 to 6 As shown, in some embodiments, the positioning plate 211 , the blocking portion 21 , and the cylinder 212 are an integrated structure, forming an integral component, and are part of the sealing assembly 2 .

[0050] In some embodiments, an elastic member 25 is disposed between the positioning rod 23 and the cylinder 212 to disengage the matching inclined surface 231 from the positioning inclined surface 111 .

[0051] The elastic member 25 is located between the driving inclined surface 241 and the cylinder 212 .

[0052] The elastic member 25 is a spring. One end of the elastic member 25 is welded to the positioning rod 23 , and the other end of the elastic member 25 abuts against the cylinder 212 .

[0053] The elastic member 25 can also be welded to the barrel 212 to prevent the positioning rod 23 from being separated from the barrel 212. The elastic member 25 is used to disengage the matching inclined surface 231 from the positioning inclined surface 111, preventing the positioning rod 23 from interfering with the convex ring 11, making it easier for the barrel 212 and the blocking portion 21 to be assembled with the tube body 1.

[0054] In addition, the elastic member 25 is used to push the positioning rod 23 to move in a direction away from the center of the tube body 1. The action force generates a reaction force parallel to the axis of the tube body 1 after driving the inclined surface 241. The reaction force pushes the positioning cylinder 24 to move in a direction away from the middle of the tube body 1. At this time, an anti-loosening effect is formed on the positioning cylinder 24, making it difficult for the positioning cylinder 24 to loosen.

[0055] In this specification, the center of the tube body 1 refers to a position close to the axis of the tube body 1 .

[0056] The middle of the tube body 1 refers to the middle position of the tube body 1 in the axial direction.

[0057] Reference Figures 1 to 6 As shown, in some embodiments, a driving head 232 is provided at one end of the positioning rod 23 that contacts the driving inclined surface 241 , and the driving head 232 is in point contact with the driving inclined surface 241 .

[0058] The driving head 232 is hemispherical, and the driving head 232 and the positioning rod 23 are an integrated structure.

[0059] The arrangement of the driving head 232 reduces the contact area between the positioning rod 23 and the driving inclined surface 241 , slows down the wear of the driving inclined surface 241 , and reduces the friction between the positioning rod 23 and the driving inclined surface 241 , making the positioning cylinder 24 easy to operate.

[0060] In some embodiments, the outer wall of the cylinder 212 is provided with an external thread, the positioning cylinder 24 is provided with an internal thread, and the positioning cylinder 24 is also provided with an operating portion 242 for facilitating the rotation of the positioning cylinder 24 , and the cross-sectional shape of the operating portion 242 is a polygon.

[0061] The cylinder body 212 is also provided with a locking nut 26, and the locking nut 26 contacts one end of the positioning cylinder 24. The locking nut 26 plays a role of preventing loosening, and the positioning cylinder 24 has a high positioning accuracy, and the positioning cylinder 24 is not easy to loosen.

[0062] Reference Figures 1 to 6 As shown, in some embodiments, the blocking portion 21 and the positioning plate 211 are an integrated structure, and the cylinder 212 and the positioning plate 211 are an integrated structure.

[0063] The blocking portion 21 is provided with a blind hole 213 for reducing the weight of the blocking portion 21 .

[0064] The blocking portion 21 may also be solid.

[0065] The above introduces the subject technical solution of the utility model and the corresponding details. It can be understood that the above introduction is only some implementation plans of the subject technical solution of the utility model, and some details can be omitted during the specific implementation.

[0066] In addition, in some embodiments of the above utility model, multiple embodiments may be implemented in combination, and various combination schemes are not listed one by one due to space limitations. Those skilled in the art can freely combine and implement the above embodiments according to needs during specific implementation to obtain a better application experience.

[0067] When implementing the subject technical solution of the utility model, those skilled in the art can obtain other detailed configurations or drawings according to the subject technical solution of the utility model and the drawings. Obviously, these details still fall within the scope covered by the subject technical solution of the utility model without departing from the subject technical solution of the utility model.

Claims

1. A sealing and blocking assembly for a power cable protection tube, characterized in that: It comprises a tube body (1) and a sealing assembly (2) arranged at the end of the tube body (1); The end of the tube body (1) is provided with a convex ring (11) that cooperates with the sealing assembly (2), and the convex ring (11) has a positioning inclined surface (111) on one side close to the middle of the tube body (1); The sealing assembly (2) comprises a blocking portion (21) extending into the tube body (1), the blocking portion (21) being provided with a positioning plate (211) in contact with the end surface of the tube body (1), the positioning plate (211) being provided with a cylinder (212), a positioning space (22) being formed between the cylinder (212) and the blocking portion (21), a portion of the tube body (1) being located in the positioning space (22), and the convex ring (11) and the positioning inclined surface (111) being completely located in the positioning space (22); The cylinder (212) is provided with a positioning rod (23), the positioning rod (23) is slidably arranged on the cylinder (212) along the diameter direction of the cylinder (212), there are a plurality of positioning rods (23), the positioning rods (23) are evenly distributed around the tube body (1), and the positioning rod (23) is provided with a matching inclined surface (231) matching with the positioning inclined surface (111); The cylinder (212) is further provided with a positioning cylinder (24), the positioning cylinder (24) being threadedly arranged on the cylinder (212), and the positioning cylinder (24) being provided with a driving inclined surface (241) for pushing the positioning rod (23) so that the matching inclined surface (231) matches the positioning inclined surface (111).

2. The power cable protection tube sealing and blocking assembly according to claim 1, characterized in that: An elastic member (25) is provided between the positioning rod (23) and the cylinder (212) for disengaging the matching inclined surface (231) from the positioning inclined surface (111).

3. The power cable protection tube sealing and blocking assembly according to claim 2, characterized in that: The elastic member (25) is located between the driving inclined surface (241) and the cylinder (212).

4. The power cable protection tube sealing and blocking assembly according to claim 3, characterized in that: The elastic member is a spring, one end of the elastic member (25) is welded to the positioning rod (23), and the other end of the elastic member (25) abuts against the cylinder (212).

5. The power cable protection tube sealing and blocking assembly according to any one of claims 1 to 4, characterized in that: One end of the positioning rod (23) that contacts the driving inclined surface (241) is provided with a driving head (232), and the driving head (232) is in point contact with the driving inclined surface (241).

6. The power cable protection tube sealing and blocking assembly according to claim 5, characterized in that: The driving head (232) is hemispherical, and the driving head (232) and the positioning rod (23) are an integrated structure.

7. The power cable protection tube sealing and blocking assembly according to claim 6, characterized in that: The outer wall of the cylinder (212) is provided with an external thread, the positioning cylinder (24) is provided with an internal thread, and the positioning cylinder (24) is also provided with an operating portion (242) for facilitating the rotation of the positioning cylinder (24), and the cross-sectional shape of the operating portion (242) is a polygon.

8. The power cable protection tube sealing and blocking assembly according to claim 7, characterized in that: The cylinder body (212) is also provided with a locking nut (26), and the locking nut (26) is in contact with one end of the positioning cylinder (24).

9. The power cable protection tube sealing and blocking assembly according to claim 1, characterized in that: The blocking portion (21) and the positioning plate (211) are an integrated structure, and the cylinder (212) and the positioning plate (211) are an integrated structure.

10. The power cable protection tube sealing and blocking assembly according to claim 9, characterized in that: The blocking portion (21) is provided with a blind hole (213) for reducing the weight of the blocking portion (21).

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