Metal cable conduit joint structure

Abstract

The utility model relates to the technical field of cable conduits, and discloses a metal cable conduit joint structure, which is used for connecting two sections of metal cable conduits and comprises a sleeve and connecting rings arranged at two ends of the sleeve, and the connecting rings are sleeved outside the metal cable conduits and are in clearance fit with the metal cable conduits. The connecting ring is detachably connected with the metal cable conduit; a limiting convex ring is arranged in the center of the inner wall of the sleeve, annular grooves are formed in the two ends of the limiting convex ring, the outer walls of the annular grooves and the inner wall of the sleeve are equal in diameter, sealing rings are arranged in the annular grooves, and the inner wall of the sleeve is in clearance fit with the outer wall of the metal cable conduit; first flanges are arranged on the outer sides of the connecting rings, a plurality of flange holes distributed in the circumferential direction are formed in the first flanges, a plurality of pull rods are arranged between the first flanges of the two connecting rings, and the two ends of each pull rod penetrate through the corresponding flange holes and then are connected with the first flanges through fasteners. The sealing structure has the advantages of being convenient to disassemble and assemble and good in sealing effect.

Description

Technical Field

[0001] This utility model relates to the field of cable conduit technology, and in particular to a metal cable conduit joint structure. Background Technology

[0002] Cable conduits, also known as power conduits or cable protection conduits, primarily serve to allow cables to pass through and provide safety protection. Common cable conduits include metal cable conduits and plastic cable conduits. Cable conduits need to be coaxially connected to form a channel for laying cables. For metal cable conduits, one method involves designing the two ends of the conduit to have different diameters, allowing them to be interlocked. The interlocking area is filled with sealant and sealed with sealing tape. Another method involves using conduits of equal diameter at both ends, with a metal sleeve placed between the two sections. The ends of the metal sleeve are fitted over the outside of the cable conduit, the interlocking area is filled with sealant, and sealed with sealing tape. However, the sealant connection at the interlocking point makes disassembly inconvenient; furthermore, the external sealing tape is constantly exposed to the elements and is prone to failure due to environmental factors, leading to reduced sealing performance. Utility Model Content

[0003] In order to solve the above-mentioned problems in the prior art, this utility model provides a metal cable conduit joint structure that is easy to assemble and disassemble and has good sealing performance.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A metal cable conduit connector structure for connecting two metal cable conduits includes a sleeve and connecting rings at both ends of the sleeve. The connecting rings are fitted over the outer side of the metal cable conduit and have a clearance fit with the metal cable conduit. The connecting rings are detachably connected to the metal cable conduit. A limiting protrusion is provided at the center of the inner wall of the sleeve. Both ends of the limiting protrusion are provided with annular grooves. The outer wall of the annular grooves is equal in diameter to the inner wall of the sleeve. A sealing ring is provided in the annular grooves. The inner wall of the sleeve and the outer wall of the metal cable conduit have a clearance fit. A first flange is provided on the outer side of the connecting rings. The first flange has several flange holes distributed circumferentially. Several tie rods are provided between the first flanges of the two connecting rings. The two ends of the tie rods pass through the corresponding flange holes and are connected to the first flange by fasteners.

[0006] In use, the two connecting rings are respectively fitted onto the ends of the two metal cable conduits, and the connecting rings are fixed to the outer wall of the metal cable conduits. Then, the metal cable conduits are inserted into the annular groove inside the sleeve. Finally, the two ends of the pull rod are passed through the flange holes and connected by fasteners. The two metal cable conduits are pulled tight by the pull rod, and the ends of the metal cable conduits are pressed against the sealing ring in the annular groove for sealing. After installation, the sealing ring is located inside the sleeve. The sealing ring has a good sealing effect and is not easy to fail. It is also very convenient to disassemble and repair the cable.

[0007] Preferably, the sleeve has a second flange on both outer sides, and the second flange has several connecting through holes evenly distributed circumferentially. The two ends of the pull rod slide through the connecting through holes respectively. The connecting through holes on the second flange are used for the pull rod to pass through and for positioning the pull rod.

[0008] Preferably, the pull rod is configured as a screw, and the fastener is configured as a nut; a wrench holder is fixed in the middle of the pull rod. When the nut is connected to the screw, the wrench holder can be used to clamp the screw and prevent it from rotating, thus ensuring a stable tightening of the nut.

[0009] Preferably, a preload spring is fitted onto the tie rod at the portion located between the first flange and the second flange. The preload spring prevents the nut from loosening.

[0010] Preferably, the outer surface of the connecting ring is provided with a plurality of circumferentially evenly distributed ribs between the end face of the first flange. The ribs increase the strength of the connecting ring itself.

[0011] Preferably, the top surface of the rib has a threaded hole that communicates with the interior of the connecting ring. A fastening bolt is installed in the threaded hole, and the inner end of the fastening bolt abuts against the outer wall of the metal cable conduit to form the detachable connection. When the fastening bolt is tightened, it abuts against the outer wall of the metal cable conduit.

[0012] Preferably, the inner wall of the annular groove is provided with a plurality of circumferentially distributed protrusions. When the end of the metal cable conduit extends into the annular groove, the top surface of the protrusions abuts against the inner wall of the end of the metal cable conduit. The protrusions can reduce the resistance of the metal cable conduit when inserted into the annular groove.

[0013] Preferably, the connecting ring is a metal ring, and the sleeve is a plastic tube. The connecting ring itself requires high strength; a metal ring meets the strength requirements and provides a more stable connection with the metal cable conduit; the plastic tube has good corrosion resistance and is low in cost.

[0014] Therefore, this utility model has the advantages of convenient assembly and disassembly and good sealing effect. Attached Figure Description

[0015] Figure 1This is a schematic diagram of one structure of the present utility model.

[0016] Figure 2 for Figure 1 The front view.

[0017] Figure 3 for Figure 2 Sectional view at point AA.

[0018] Figure 4 This is a cross-sectional view of the casing.

[0019] Figure 5 This is a schematic diagram showing the connection between two sections of metal cable conduit.

[0020] Figure 6 for Figure 5 A sectional view.

[0021] Figure 7 for Figure 5 A partial exploded view. Detailed Implementation

[0022] To make the technical problem to be solved, the technical solution, and the beneficial technical effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and several exemplary embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the scope of protection of the present utility model.

[0023] It should be understood that the terms "first," "second," etc., used herein are for descriptive purposes only and should not be construed as indicating or implying relative importance, nor should they be construed as implicitly specifying the number of technical features indicated. Features specified as "first" or "second" may expressly or implicitly indicate that at least one of those features is included.

[0024] like Figures 1-7 The diagram illustrates a metal cable conduit connector structure for connecting two metal cable conduits 9. It includes a sleeve 1 and connecting rings 2 at both ends of the sleeve 1. The connecting rings 2 are fitted over the outer side of the metal cable conduits 9 and have a clearance fit with them. The connecting rings 2 and the metal cable conduits 9 are detachably connected. A limiting protrusion 10 is provided at the center of the inner wall of the sleeve 1. Both ends of the limiting protrusion 10 have annular grooves 11. The outer wall of the annular grooves 11 has the same diameter as the inner wall of the sleeve 1. A sealing ring 3 is provided within the annular grooves 11. The inner wall of the sleeve 1 has a clearance fit with the outer wall of the metal cable conduit 9. A first flange 20 is provided on the outer side of the connecting rings 2. The first flange 20 has several flange holes distributed circumferentially. Several tie rods 4 are provided between the first flanges 20 of the two connecting rings 2. The two ends of the tie rods 4 pass through the corresponding flange holes and are connected to the first flange 20 by fasteners 5. In some embodiments, the connecting rings 2 are configured as metal rings, and the sleeve 1 is configured as a plastic tube.

[0025] Both ends of the sleeve 1 are provided with second flanges 12 on their outer sides. Each second flange 12 has several circumferentially evenly distributed connecting through holes 13, through which the two ends of the pull rod 4 slide. The pull rod 4 is configured as a threaded rod, and the fastener is configured as a nut. A wrench seat 40 is fixed in the middle of the pull rod 4. A preload spring 6 is fitted on the pull rod 4 at the position between the first flange 20 and the second flange 12. If a second flange is provided on the outer side of the sleeve, and the pull rod needs to pass through the connecting through holes 13 on the second flange, the wrench seat can be directly machined with two parallel positioning surfaces on the surface of the pull rod, thus facilitating the pull rod's passage through the connecting through holes. If no second flange is provided on the outer side of the sleeve, the wrench seat can be configured as follows: Figure 1 The hexagonal prism structure shown makes the tie rod stronger.

[0026] A number of circumferentially evenly distributed ribs 22 are provided between the outer side of the connecting ring 2 and the end face of the first flange 20. The top surface of the ribs 22 is provided with threaded holes 23 that penetrate the interior of the connecting ring 2. Fastening bolts 24 are provided in the threaded holes 23. The inner end of the fastening bolts 24 abuts against the outer wall of the metal cable conduit 9 to form a detachable connection. A number of circumferentially distributed ribs 110 are provided on the inner wall of the annular groove 11. When the end of the metal cable conduit 9 extends into the annular groove 11, the top surface of the ribs 110 abuts against the inner wall of the end of the metal cable conduit 9.

[0027] Referring to the accompanying drawings, the principle of this utility model is as follows: Figures 5-7 As shown, during use, the two connecting rings 2 are respectively fitted onto the ends of the two metal cable conduits 9. The connecting rings 2 are fixed to the outer wall of the metal cable conduits 9 by fastening bolts. Then, the metal cable conduits are inserted into the annular groove inside the sleeve. Finally, the two ends of the pull rod are passed through the flange holes and connected by fasteners. The two metal cable conduits are pulled tight by the pull rod, and the ends of the metal cable conduits press against the sealing ring in the annular groove for sealing. After installation, the sealing ring is located inside the sleeve. The sealing ring has a good sealing effect and is not easy to fail. It is also very convenient to disassemble and repair the cable.

[0028] In the description of this utility model, it should be understood that the directions or positional relationships indicated by up, down, left, right, inner end, outer end, one end, and the other end are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the purpose of more clearly describing the technical solution of this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as a limitation of this utility model.

[0029] Although specific embodiments of the present invention are described in detail herein, they are given for illustrative purposes only and should not be construed as limiting the scope of the present invention. Various substitutions, alterations, and modifications may be conceived without departing from the spirit and scope of the present invention.

Claims

1. A metal cable conduit connector structure for connecting two sections of metal cable conduit (9), characterized in that, Includes a sleeve (1) and connecting rings (2) at both ends of the sleeve (1). The connecting rings (2) are sleeved on the outside of the metal cable conduit (9) and are in clearance fit with the metal cable conduit (9). The connecting rings (2) and the metal cable conduit (9) are detachably connected. The inner wall of the sleeve (1) is provided with a limiting protrusion ring (10) at the center. Both ends of the limiting protrusion ring (10) are provided with annular grooves (11). The outer wall of the annular groove (11) is equal in diameter to the inner wall of the sleeve (1). A sealing ring (3) is provided in the annular groove (11). The inner wall of the sleeve (1) is clearance-fitted with the outer wall of the metal cable conduit (9). The outer side of the connecting ring (2) is provided with a first flange (20), and the first flange (20) is provided with a plurality of flange holes distributed along the circumference. A plurality of tie rods (4) are provided between the first flanges (20) of the two connecting rings (2). The two ends of the tie rods (4) pass through the corresponding flange holes and are connected to the first flange (20) by fasteners (5).

2. The metal cable conduit joint structure according to claim 1, characterized in that, The sleeve (1) has a second flange (12) on both outer sides. The second flange (12) has several connecting through holes (13) evenly distributed in the circumferential direction. The two ends of the tie rod (4) slide through the connecting through holes (13).

3. A metal cable conduit joint structure according to claim 1 or 2, characterized in that, The pull rod (4) is configured as a screw, and the fastener is configured as a nut; a wrench seat (40) is fixed in the middle of the pull rod (4).

4. The metal cable conduit joint structure according to claim 3, characterized in that, A preload spring (6) is fitted on the pull rod (4) between the first flange (20) and the second flange (12).

5. The metal cable conduit joint structure according to claim 1, characterized in that, The outer side of the connecting ring (2) and the end face of the first flange (20) are provided with a number of circumferentially evenly distributed ribs (22).

6. The metal cable conduit joint structure according to claim 5, characterized in that, The top surface of the rib (22) is provided with a threaded hole (23) that communicates with the interior of the connecting ring (2). A fastening bolt (24) is provided in the threaded hole (23). The inner end of the fastening bolt (24) abuts against the outer wall of the metal cable conduit (9) to form the detachable connection.

7. The metal cable conduit joint structure according to claim 1, characterized in that, The inner wall of the annular groove (11) is provided with a number of circumferentially distributed protrusions (110). When the end of the metal cable conduit (9) extends into the annular groove (11), the top surface of the protrusions (110) abuts against the inner wall of the end of the metal cable conduit (9).

8. A metal cable conduit joint structure according to claim 1 or 2, characterized in that, The connecting ring (2) is configured as a metal ring, and the sleeve (1) is configured as a plastic tube.

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