A cable threader intermediate joint device

Abstract

The present application discloses an intermediate joint device for a cable threader, comprising: an outer cover, which is a hollow rugby-shaped structure with a large outer diameter in the middle and small outer diameters at both ends; the outer cover is radially divided into two parts along the middle thereof to form a left outer cover and a right outer cover that can be detachably connected; the outer surfaces of the left outer cover and the right outer cover are smooth arc-shaped surfaces, and the small outer diameter ends of the left outer cover and the right outer cover are respectively provided with introduction holes for inserting steel ropes and cables; an intermediate joint, which is located in the outer cover and comprises a U-shaped bar and a U-shaped card; the cable is placed into the U-shaped groove from one end of the U-shaped bar, and the cable is fixed in the U-shaped groove of the U-shaped bar by the U-shaped card; a traction hole is provided at the other end of the U-shaped bar, and the steel rope is inserted into the traction hole and locked by a lock buckle, so that the steel rope and the cable form a whole through the intermediate joint. The device makes it convenient and smooth for the cable to pass through the threading tube, and there will be no accidental disconnection of the steel rope and the cable, thereby reducing the cable laying operation time and reducing the labor intensity of the operators.

Description

Technical Field

[0001] The present application relates to the technical field of cable laying, and in particular to an intermediate joint device for a cable threader. Background Art

[0002] Using threading tubes to lay cables is a common form of electrical construction. The traditional method is to bundle the steel rope of the threader with the cable, pull the cable with the steel rope in the threading tube, and finally drag the cable out of the threading tube.

[0003] However, in actual operation, the overall volume of the steel rope and cable after being bundled is large, and the surface of the bundled joint is rough and uneven. In addition, the inside of the threading tube is not very smooth. Once the traction is blocked, it is necessary to withdraw and continue to tidy up the cable bundle. If the bundle is not strong, the joint between the steel rope head and the cable head is easy to be broken, resulting in failure of previous work and affecting the overall operation progress.

[0004] Therefore, in view of the above technical problems, how to make the cable pass through the threading tube smoothly and avoid accidental disconnection of the steel rope head and the cable head is a technical problem that technical personnel in this field need to solve. Utility Model Content

[0005] The purpose of the present application is to provide a cable threader intermediate joint device, which replaces the traditional bundling method, making it convenient and smooth for the cable to pass through the threading tube, and preventing the steel rope from accidentally disconnecting from the cable, thereby reducing the cable laying operation time and alleviating the labor intensity of the operators.

[0006] To achieve the above object, the present application provides a cable threader intermediate joint device, comprising:

[0007] The outer cover is a hollow rugby-shaped structure with a large outer diameter in the middle and small outer diameters at both ends. The outer cover is radially divided into two parts along the middle to form a left outer cover and a right outer cover that are detachably connected. The outer surfaces of the left outer cover and the right outer cover are smooth arc-shaped surfaces, and the small outer diameter ends of the left outer cover and the right outer cover are respectively provided with lead-in holes for inserting steel ropes and cables;

[0008] The middle joint is located in the outer cover and includes a U-shaped bar and a U-shaped card. The cable is placed into the U-shaped groove of the U-shaped bar from one end of the U-shaped bar, and the cable is fixed in the U-shaped groove of the U-shaped bar by the U-shaped card. A traction hole is provided at the other end of the U-shaped bar. The steel rope is inserted into the traction hole and locked by a lock buckle, so that the steel rope and the cable form a whole through the middle joint.

[0009] Preferably, the outer cover is made of a smooth, wear-resistant polymer material.

[0010] Preferably, the large outer diameter end of the left outer cover is provided with a tapped inner buckle, and the large outer diameter end of the right outer cover is provided with a tapped outer buckle, and the tapped inner buckle and the tapped outer buckle cooperate to form the detachable outer cover.

[0011] Preferably, the outer diameter of the middle portion of the outer cover is the largest, and the maximum outer diameter is less than two-thirds of the nominal diameter of the threading tube.

[0012] Preferably, the number of the U-shaped clamp is at least one, which is fixed to the U-shaped bar by bolts, and the U-shaped groove of the U-shaped clamp cooperates with the U-shaped groove of the U-shaped bar to form an annular groove for clamping the cable.

[0013] Preferably, the U-shaped strip is made by bending a 1.5-3 mm steel plate, and the width or height of the U-shaped strip after being cut is at least greater than the diameter of the introduction hole.

[0014] Preferably, the traction hole is a semicircular ring structure and protrudes outside the end of the U-shaped bar.

[0015] Compared with the above background technology, the outer cover of the present application is shaped like a rugby ball, and is streamlined as a whole. The cables and steel ropes extend into the outer cover through the introduction holes at both ends of the outer cover. At the same time, an intermediate joint for connecting the cables and steel ropes is provided inside the hollow outer cover, thereby ensuring that the steel ropes and cables can form a whole inside the outer cover. In addition, the outer cover of the present application is divided into a left outer cover and a right outer cover that can be detachably connected. The cables and steel ropes can be connected to the intermediate joint after disassembly, and the left outer cover and the right outer cover can be fixedly connected after connection. After the connection is completed, the smooth arc surface on the outside of the outer cover can be used to slide smoothly in the threading tube, avoiding the problem of traction obstruction caused by the binding head being too large or the friction being too large. At the same time, the intermediate joint can also effectively avoid the accidental disconnection of the steel rope and the cable, thereby reducing the cable laying operation time and reducing the labor intensity of the operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0017] Figure 1 A schematic diagram of the outer cover structure provided in an embodiment of the present application;

[0018] Figure 2 A schematic diagram of a U-shaped bar structure provided in an embodiment of the present application;

[0019] Figure 3A schematic diagram of the U-shaped card structure provided in an embodiment of the present application;

[0020] Figure 4 This is a schematic diagram of the connection structure between the intermediate joint, cable and steel rope provided in the embodiment of the present application.

[0021] In the figure: 1, outer cover 11, left outer cover 12, right outer cover 13, introduction hole 14, tapped inner buckle 15, tapped outer buckle 2, U-shaped bar 21, traction hole 3, U-shaped card 4, cable 5, steel rope 6, lock buckle. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] It should be noted that in this embodiment, the directions or positional relationships indicated by "upper", "lower", "front", "back", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] like Figure 1 and Figure 2 As shown, in this embodiment, a cable threader intermediate joint device is provided, which includes an outer cover 1 and an intermediate joint. The outer cover 1 serves as a main protective component, and the connection part between the cable 4 and the steel rope 5 can be placed inside the outer cover 1, and the outer cover 1 can move in the threading tube, so that the cable 4 can be pulled through the steel rope 5, and finally the cable 4 can be dragged out of the threading tube.

[0026] Specifically, the outer cover 1 is a hollow rugby-shaped structure with a large outer diameter in the middle and small outer diameters at both ends. The outer wall of the outer cover 1 is a smooth curved surface. Combined with the rugby-shaped structure, it can be seen that the smooth curved surface gradually converges from the middle of the outer cover 1 to the end, thereby forming a streamlined wall surface, which has a good sliding effect and is not easy to cause jamming in the wire threading tube.

[0027] The outer cover 1 is divided into two parts along the radial direction of the middle thereof to form a left outer cover 11 and a right outer cover 12 which are detachably connected. Figure 1 Similarly, the outer surfaces of the left outer cover 11 and the right outer cover 12 are smooth arc-shaped surfaces, and the small outer diameter ends of the left outer cover 11 and the right outer cover 12 are respectively provided with introduction holes 13 for inserting the steel rope 5 and the cable 4. That is, the steel rope 5 and the cable 4 enter the outer cover 1 through the introduction holes 13 and are connected inside the outer cover 1. And because the left outer cover 11 and the right outer cover 12 are detachably connected, the steel rope 5 and the cable 4 can be connected when the left outer cover 11 and the right outer cover 12 are separated, and after the two are connected, the left outer cover 11 and the right outer cover 12 are installed to form the entire outer cover 1 structure.

[0028] The component for connecting the steel rope 5 and the cable 4 is an intermediate joint, which is located in the outer cover 1 and includes a U-shaped strip 2 and a U-shaped card 3. Figure 2 and Figure 3 , the cable 4 is placed in the U-shaped groove of the U-shaped bar 2 from one end, and the cable 4 is fixed in the U-shaped groove of the U-shaped bar 2 by the U-shaped card 3. Figure 2 The U-shaped bar 2 has a U-shaped groove in the middle, and has outwardly extending expansion boards on both sides, with a plurality of through holes formed on the expansion boards, and the U-shaped card 3 is fixed to the U-shaped bar 2 through the through holes and bolts, thereby fixing the cable 4 in the U-shaped groove, thus completing the fixing of the cable 4. Of course, the fixing of the cable 4 is performed after the cable 4 passes through the left outer cover 11 and the left outer cover 11 is separated from the right outer cover 12.

[0029] The other end of the U-shaped bar 2 is provided with a traction hole 21, please refer to Figure 2 and Figure 4 The steel rope 5 is inserted into the traction hole 21 and locked by the lock 6, so that the steel rope 5 and the cable 4 form a whole through the middle joint. It should be noted that the lock 6 ensures that the steel rope 5 can be locked on the traction hole 21, which will not be repeated here, and can refer to the prior art.

[0030] In summary of the above embodiments, the outer cover 1 of the present application is shaped like a rugby ball and is streamlined as a whole. The cable 4 and the steel rope 5 extend into the outer cover 1 through the introduction holes 13 at both ends of the outer cover 1. At the same time, an intermediate joint for connecting the cable 4 and the steel rope 5 is provided inside the hollow outer cover 1, so as to ensure that the steel rope 5 and the cable 4 can form a whole inside the outer cover 1. In addition, the outer cover 1 of the present application is divided into a left outer cover 11 and a right outer cover 12 that can be detachably connected. The cable 4 and the steel rope 5 can be connected to the intermediate joint after disassembly, and the left outer cover 11 and the right outer cover 12 are fixedly connected after connection. After the connection is completed, the smooth arc surface outside the outer cover 1 can be used to slide smoothly in the threading tube, avoiding the problem of traction obstruction caused by the binding head being too large or the friction being too large. At the same time, the intermediate joint can also effectively avoid the accidental disconnection of the steel rope 5 and the cable 4, thereby reducing the cable 4 laying operation time and reducing the labor intensity of the operators.

[0031] In addition, in order to improve the smoothness and wear resistance of the outer cover 1, a smooth and wear-resistant polymer material can be selected, such as polyvinyl chloride (PVC), polyurethane (PU), etc.

[0032] There are many ways to detachably connect the left outer cover 11 and the right outer cover 12, such as snap connection, threaded connection, etc. The threaded connection is taken as an example for description.

[0033] Please refer to Figure 1 The large outer diameter end of the left outer cover 11 is provided with a tapped inner buckle 14, and the large outer diameter end of the right outer cover 12 is provided with a tapped outer buckle 15. The tapped outer buckle 15 protrudes from the right outer cover 12 and can be threadedly matched with the tapped inner buckle 14 to form a detachable outer cover 1.

[0034] It should be noted that the "left" and "right" in the left outer cover 11 and the right outer cover 12 only indicate their placement orientations, and do not mean that the cable 4 can only enter the left outer cover 11 through the traction hole 21, and can also enter the right outer cover 12 through the traction hole 21. The same is true for the steel rope 5, which will not be repeated here.

[0035] According to relevant standards, when the cable 4 is passed through the conduit, the inner diameter of the conduit must not be less than 1.5 times the outer diameter of the cable 4. Therefore, the maximum outer diameter of the middle part of the outer cover 1 needs to be less than two-thirds of the nominal diameter of the conduit, so as to ensure that the outer cover 1 can slide smoothly in the conduit and avoid interference fit.

[0036] Based on the above embodiment, the present application provides the dimension data of the outer cover 1 and the threading tube, please refer to the following table:

[0037] Table 1 Comparison table of nominal diameter of threading pipe and maximum outer diameter of outer cover

[0038]

[0039] In addition, please refer to Figure 4 In order to ensure the fixing effect of the cable 4 on the U-shaped bar 2, the number of U-shaped bars 2 can be set to multiple and fixed to the U-shaped bar 2 by bolts, so that the U-shaped groove of the U-shaped card 3 cooperates with the U-shaped groove of the U-shaped bar 2 to form an annular groove for clamping the cable 4 to prevent accidental falling off.

[0040] The U-shaped strip 2 is formed by bending a 1.5-3 mm steel plate, and the width or height of the U-shaped strip 2 is at least greater than the diameter of the introduction hole 13 to prevent the U-shaped strip 2 from escaping from the outer cover 1.

[0041] In addition, for the above-mentioned traction hole 21, since the steel rope 5 needs to be fixed here, in order to avoid unnecessary friction of the steel rope 5 here and reduce the service life, the traction hole 21 is set in a semicircular ring structure. Please refer to Figure 2 and Figure 4 , and protrudes outside the end of the U-shaped bar 2 to facilitate the connection of the steel rope 5.

[0042] In general, the present application solves the common problems in the installation of cable 4-wire conduit, improves the traditional bundling method, and makes the cable 4 conduit installation operation more convenient and smooth, thereby reducing the cable 4 installation operation time and reducing the labor intensity of operators, with greater economic benefits and better social benefits.

[0043] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0044] Specific examples are used herein to illustrate the principles and implementation methods of the present application, and the description of the above embodiments is only used to help understand the method and core ideas of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A cable threader intermediate joint device, characterized in that: include: The outer cover is a hollow rugby-shaped structure with a large outer diameter in the middle and small outer diameters at both ends. The outer cover is radially divided into two parts along the middle to form a left outer cover and a right outer cover that are detachably connected. The outer surfaces of the left outer cover and the right outer cover are smooth arc-shaped surfaces, and the small outer diameter ends of the left outer cover and the right outer cover are respectively provided with lead-in holes for inserting steel ropes and cables; The middle joint is located in the outer cover and includes a U-shaped bar and a U-shaped card. The cable is placed into the U-shaped groove of the U-shaped bar from one end of the U-shaped bar, and the cable is fixed in the U-shaped groove of the U-shaped bar by the U-shaped card. A traction hole is provided at the other end of the U-shaped bar. The steel rope is inserted into the traction hole and locked by a lock buckle, so that the steel rope and the cable form a whole through the middle joint.

2. The cable threader intermediate joint device according to claim 1, characterized in that: The outer cover is made of a smooth, wear-resistant polymer material.

3. The cable threader intermediate joint device according to claim 1, characterized in that: The large outer diameter end of the left outer cover is provided with a tapped inner buckle, and the large outer diameter end of the right outer cover is provided with a tapped outer buckle, and the tapped inner buckle and the tapped outer buckle cooperate to form the detachable outer cover.

4. The cable threader intermediate joint device according to claim 1, characterized in that: The outer diameter of the middle part of the outer cover is the largest, and the maximum outer diameter is less than two-thirds of the nominal diameter of the threading pipe.

5. The cable threader intermediate joint device according to claim 1, characterized in that: The number of the U-shaped clamp is at least one, which is fixed to the U-shaped bar by bolts, and the U-shaped groove of the U-shaped clamp cooperates with the U-shaped groove of the U-shaped bar to form an annular groove for clamping the cable.

6. The cable threader intermediate joint device according to claim 1, characterized in that: The U-shaped strip is made by bending a 1.5-3 mm steel plate, and the width or height of the U-shaped strip after being cut is at least greater than the diameter of the introduction hole.

7. The cable threader intermediate joint device according to claim 1, characterized in that: The traction hole is a semicircular ring structure and protrudes outside the end of the U-shaped bar.

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