Electrical system threading device for building construction

Abstract

The invention relates to the technical field of cable installation, in particular to an electrical system threading device for building construction. A connecting spring is arranged at the front end of the traction rope; the rear end of the connecting spring is fixedly connected to the front end of the traction rope through a connecting assembly, and a traction device is arranged at the front end. The traction device comprises a metal column; elastic supporting assemblies are arranged on the side walls of the two metal columns; when the metal columns move to the turning position of the wire pipe, the elastic supporting assemblies, close to the bent inner corner of the wire pipe, of the front metal columns are suspended, and the elastic supporting assemblies, close to the bent outer corner of the wire pipe, of the front metal columns release elastic force so as to push the front metal columns to deflect towards the bent wire pipe and guide the metal columns to move into the bent wire pipe. The metal column is prevented from being clamped when the bending position of the wire pipe is over-bent, and the threading efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cable installation, and particularly relates to a wire threading device for an electrical system in building construction. Background Art

[0002] During the process of building construction, since the pipeline is usually directly buried inside the concrete, due to the long length of the pipeline and multiple bends, in order to make the wire threading more smooth, a wire threading device is preferably used for auxiliary wire threading. Some existing wire threading devices include a steel wire rope, and a metal column for traction is fixed at one end of the steel wire rope. When wiring and installing in the pipeline, the metal column is first inserted into the pipeline at one end of the pipeline, and the steel wire rope is pushed to drive the metal column to move in the pipeline until the metal column extends out from the other end of the pipeline. Then, one end of the cable is fixed to the metal column with a wire coil. The operator pulls the steel wire rope back to draw the cable into the pipe. Among them, the wire coil is a wire loop made of a relatively thin annular steel wire rope. The wire coil is pulled into an oval shape, one end passes through the through hole on the metal column, and the other end passes into the loop that has passed through the metal column. After pulling forcefully, the wire coil and the metal column are fixed, and then the cable and the wire coil are fixed by means of winding and bundling.

[0003] In order to reduce the resistance between the metal column and the inner wall of the pipeline, rollers are usually rotatably installed at the end of the metal column. When the metal column moves in the pipeline, rolling friction occurs between the roller and the inner wall of the pipeline. Since the diameter of the metal column is smaller than the diameter of the pipeline, the metal column is likely to generate yaw and sway in the pipeline when moving in the pipeline. Then, when the metal column of the wire threading device bends at the turning point of the pipeline, the metal column may be stuck when changing direction at the turning point of the pipeline, thus affecting the wire threading efficiency. Summary of the Invention

[0004] The present invention provides a wire threading device for an electrical system in building construction to solve the above problems.

[0005] A wire threading device for an electrical system in building construction of the present invention adopts the following technical solutions: A wire threading device for an electrical system in building construction includes a traction rope; the traction rope is arranged front and back; a connecting spring is provided at the front end of the traction rope; the connecting spring and the traction rope are coaxial; the rear end of the connecting spring is fixedly connected to the front end of the traction rope through a connecting component, and a traction device is provided at the front end.

[0006] The traction device includes a metal column; there are two metal columns; the two metal columns are distributed front and back; the metal column is a cylinder with its axis arranged front and back; the metal column and the connecting spring are coaxial; the rear metal column and the connecting spring are rotatably connected through a rotating component; the rear end of the front metal column and the front end of the rear metal column are ball-jointed; elastic support components are provided on the side walls of the two metal columns.

[0007] There are multiple elastic support components on each metal column; the multiple elastic support components are circumferentially distributed along the metal column; the multiple elastic support components elastically support the metal column in the wire tube against the elastic force and keep the metal column out of contact with the inner wall of the wire tube; when the metal column moves to the turning point of the wire tube, the elastic support components near the inner corner of the wire tube bend on the front metal column are suspended, and the elastic support components near the outer corner of the wire tube bend release the elastic force to push the front metal column to deflect towards the bent wire tube, guiding the metal column to move into the bent wire tube, avoiding the metal column getting stuck when turning at the bent part of the wire tube and improving the threading efficiency. The elastic support component includes a support rod; the projection of the axis of the support rod on the vertical plane perpendicular to the axis of the metal column is arranged along the radial direction of the metal column; the projection of the axis of the support rod on the vertical plane parallel to the axis of the metal column is inclined with respect to the vertical direction, and the end of the support rod close to the axis of the metal column is in front of the end of the support rod far from the axis of the metal column; the end of the support rod close to the axis of the metal column is hinged to the side wall of the metal column through a hinge structure; an elastic structure is arranged between the support rod and the metal column; the elastic structure is used to make the end of the support rod far from the axis of the metal column abut against the inner wall of the wire tube. The lengths of the multiple support rods of the same elastic support component are different, and the center of the arc where the ends of the multiple support rods far from the axis of the metal column are located is eccentrically arranged with respect to the metal column, so that after the metal column enters the wire tube, it rotates eccentrically around the axis of the wire tube while advancing. During the process of the metal column advancing spirally in the wire tube, when encountering an obstacle, the metal column deflects to avoid the obstacle encountered in the wire tube. At the same time, when the front metal column passes through the bent part, the way of the metal column advancing spirally in the wire tube increases the turning amplitude of the front metal column, which is beneficial to the metal column passing through the bent part of the wire tube and improves the threading effect.

[0008] Further, the hinge structure includes ear plates and a hinge shaft; there are two ear plates symmetrically; the ear plates are fixed on the side wall of the metal column; hinge holes are arranged on the ear plates; the axis of the hinge hole is tangent to the side wall of the metal column; the hinge shaft is arranged at the end of the support rod close to the axis of the metal column; the hinge shaft and the hinge hole are coaxial and are in rotational fit. The hinge structure and the elastic structure cooperate to make the support rod abut against the inner walls of wire tubes with different diameters.

[0009] Further, there are two hinge shafts symmetrically; the two hinge shafts are coaxially arranged; an installation spring is fixedly connected between the two hinge shafts; the hinge shaft and the support rod are in sliding fit. After the metal column is passed through from one end of the wire tube to the other end, the two hinge shafts are squeezed to compress the installation spring, so that the hinge shaft disengages from the hinge hole and the support rod is detached from the metal column.

[0010] Further, the included angle between the axis of the hinge hole and the generatrix of the metal column is an acute angle. During the movement of the metal column in the wire tube, the support rod provides an oblique thrust for the metal column, so that the metal column rotates while advancing in the wire tube, which is beneficial to avoiding the obstacles encountered in the wire tube.

[0011] Further, the elastic structure includes a support spring; connection columns are fixed to both ends of the support spring; the connection column on one end of the support spring is inserted into the side wall of the metal column, and the connection column on the other end of the support spring is inserted into the support rod. When it is necessary to remove the support rod from the metal column, the connection column is pulled out from the metal column and the support rod, and the support spring is removed.

[0012] Further, the ends of the two metal columns close to each other are both arc-shaped. It is used to bind and clamp the coil bundle between the two metal columns.

[0013] Further, a pulley is rotatably installed at the front end of the front metal column.

[0014] Further, the connection assembly includes a connection cylinder; one end of the connection cylinder is fixedly connected to the traction rope, and the other end is fixedly connected to the connection spring; the rotation assembly includes a rotation column; one end of the rotation column is fixedly connected to the connection spring, and the other end is rotatably matched with the rear metal column.

[0015] The beneficial effects of the present invention are as follows: 1. When the metal column moves to the turning point of the wire tube, the elastic support assembly near the inner corner of the wire tube bend on the front metal column is suspended, and the elastic support assembly near the outer corner of the wire tube bend releases elastic force to push the front metal column to deflect towards the bent wire tube, guiding the metal column to move into the bent wire tube, avoiding the metal column from getting stuck when bending at the wire tube bend, and improving the wire threading efficiency.

[0016] 2. Multiple elastic support assemblies elastically support the metal column in the wire tube against the elastic force and keep the metal column out of contact with the inner wall of the wire tube, avoiding the metal column from shaking back and forth in the wire tube and hitting the inner wall of the wire tube, and reducing the damage to the inner wall of the wire tube.

[0017] 3. After the metal column enters the wire tube, it eccentrically rotates around the axis of the wire tube while advancing, so that the metal column advances in a spiral shape in the wire tube. During the process of the metal column advancing in a spiral shape in the wire tube, when encountering an obstacle, the metal column deflects to avoid the obstacle encountered in the wire tube. At the same time, when the front metal column passes through the bend, the spiral advancing mode of the metal column in the wire tube increases the turning amplitude of the front metal column, which is beneficial to the metal column passing through the wire tube bend and improves the wire threading effect. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1Schematic diagram of the structure of an embodiment of a wire threading device for an electrical system in building construction according to the present invention; Figure 2 is Figure 1 the enlarged view of part A in Figure 3 Front view of an embodiment of a wire threading device for an electrical system in building construction according to the present invention; Figure 4 is Figure 3 the sectional view taken along line B - B in Figure 5 is Figure 4 the enlarged view of part C in Figure 6 Schematic diagram of the support rod and the support spring of an embodiment of a wire threading device for an electrical system in building construction according to the present invention; Figure 7 Sectional view of the support rod of an embodiment of a wire threading device for an electrical system in building construction according to the present invention; Figure 8 is Figure 7 the enlarged view of part D in Figure 9 State diagram when the metal column in an embodiment of a wire threading device for an electrical system in building construction according to the present invention moves to the bent part of the wire pipe; Figure 10 State diagram when the metal column in an embodiment of a wire threading device for an electrical system in building construction according to the present invention moves to the bent part of the wire pipe and deflects.

[0020] In the figure: 100, wire pipe; 200, towing rope; 300, connecting spring; 400, metal column; 410, pulley; 500, support rod; 510, hinge shaft; 511, mounting spring; 520, ear plate; 530, support spring; 531, connecting column. Detailed implementation method

[0021] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0022] An embodiment of a wire threading device for an electrical system in building construction according to the present invention, as shown in Figures 1 to 10As shown, it includes a towing rope 200; the towing rope 200 is arranged front and back; the towing rope 200 is a steel wire rope. A connecting spring 300 is provided at the front end of the towing rope 200; the connecting spring 300 and the towing rope 200 are coaxial; the rear end of the connecting spring 300 is fixedly connected to the front end of the towing rope 200 through a connecting component, and a towing device is provided at the front end. The connecting component includes a connecting cylinder; one end of the connecting cylinder is fixedly connected to the towing rope 200, and the other end is fixedly connected to the connecting spring 300.

[0023] The towing device includes metal columns 400; there are two metal columns 400; the two metal columns 400 are distributed front and back; a pulley 410 is rotatably installed at the front end of the front metal column 400. One end of each of the two metal columns 400 that are close to each other is arc-shaped. It is used to bind and clamp the beam coil between the two metal columns 400. The metal column 400 is a cylinder with its axis arranged front and back; the metal column 400 and the connecting spring 300 are coaxial; the rear metal column 400 and the connecting spring 300 are rotatably connected through a rotating component; the rear end of the front metal column 400 and the front end of the rear metal column 400 are ball-jointed; elastic support components are provided on the side walls of the two metal columns 400. The rotating component includes a rotating column; one end of the rotating column is fixedly connected to the connecting spring 300, and the other end is rotatably matched with the rear metal column 400.

[0024] There are multiple elastic support components on each metal column 400; multiple elastic support components are circumferentially distributed on the metal column 400; the multiple elastic support components elastically support the metal column 400 in the wire tube 100 against the elastic force and keep the metal column 400 out of contact with the inner wall of the wire tube 100; when the metal column 400 moves to the turning point of the wire tube 100, the elastic support components near the inner corner of the bend of the wire tube 100 on the front metal column 400 are suspended, and the elastic support components near the outer corner of the bend of the wire tube 100 release the elastic force to push the front metal column 400 to deflect towards the bent wire tube 100, guiding the metal column 400 to move into the bent wire tube 100, avoiding the metal column 400 from getting stuck when turning at the bend of the wire tube 100 and improving the wire threading efficiency.

[0025] In this embodiment, the elastic support assembly includes a support rod 500; the projection of the axis of the support rod 500 on the vertical plane perpendicular to the axis of the metal column 400 is arranged along the radial direction of the metal column 400; the projection of the axis of the support rod 500 on the vertical plane parallel to the axis of the metal column 400 is inclined with respect to the vertical direction, and the end of the support rod 500 close to the axis of the metal column 400 is in front of the end of the support rod 500 far from the axis of the metal column 400; the end of the support rod 500 close to the axis of the metal column 400 is hinged to the side wall of the metal column 400 through a hinge structure. The lengths of the multiple support rods 500 of the same elastic support assembly are different, and the center of the arc where the ends of the multiple support rods 500 far from the axis of the metal column 400 are located is eccentrically arranged with respect to the metal column 400, so that after the metal column 400 enters the wire pipe 100, it rotates eccentrically around the axis of the wire pipe 100 while advancing. During the process of the metal column 400 advancing spirally in the wire pipe 100, when encountering an obstacle, the metal column 400 deflects to avoid the obstacle encountered in the wire pipe 100. At the same time, when the metal column 400 in the front passes through a bent portion, the way the metal column 400 advances spirally in the wire pipe 100 increases the turning amplitude of the metal column 400 in the front, which is beneficial to the metal column 400 passing through the bent portion of the wire pipe 100 and improves the wire threading effect.

[0026] The hinge structure includes ear plates 520 and a hinge shaft 510; two ear plates 520 are symmetrically provided; the ear plates 520 are fixed on the side wall of the metal column 400; hinge holes are provided on the ear plates 520; the axis of the hinge hole is tangent to the side wall of the metal column 400; the hinge shaft 510 is provided at the end of the support rod 500 close to the axis of the metal column 400; the hinge shaft 510 is coaxial with the hinge hole and is in rotational fit. The hinge structure and the elastic structure cooperate to make the support rod 500 abut against the inner wall of the wire pipe 100 with different diameters. Two hinge shafts 510 are symmetrically provided; the two hinge shafts 510 are coaxially arranged; an installation spring 511 is fixedly connected between the two hinge shafts 510; the hinge shaft 510 and the support rod 500 are in sliding fit. After the metal column 400 is passed through from one end of the wire pipe 100 to the other end, the two hinge shafts 510 are squeezed to compress the installation spring 511, so that the hinge shaft 510 disengages from the hinge hole, and the support rod 500 is detached from the metal column 400. The angle between the axis of the hinge hole and the generatrix of the metal column 400 is an acute angle. During the process of the metal column 400 moving in the wire pipe 100, the support rod 500 provides an oblique thrust for the metal column 400, so that the metal column 400 rotates while advancing in the wire pipe 100, which is beneficial to avoiding the obstacles encountered in the wire pipe 100.

[0027] An elastic structure is provided between the support rod 500 and the metal column 400; the elastic structure is used to make the end of the support rod 500 away from the axis of the metal column 400 abut against the inner wall of the wire tube 100. The elastic structure includes a support spring 530; connection columns 531 are fixed at both ends of the support spring 530; the connection column 531 at one end of the support spring 530 is inserted into the side wall of the metal column 400, and the connection column 531 at the other end of the support spring 530 is inserted into the support rod 500. When it is necessary to remove the support rod 500 from the metal column 400, the connection column 531 is pulled out from the metal column 400 and the support rod 500, and the support spring 530 is removed.

[0028] Combined with the above embodiments, the working principle and process of the present invention are as follows: When in use, the metal column 400 is inserted into the wire tube 100 at one end of the wire tube 100, and the metal column 400 is driven to move in the wire tube 100 by pushing the traction rope 200. A plurality of support rods 500 elastically support the metal column 400 in the wire tube 100 by overcoming the elastic force of the support spring 530, and the metal column 400 is separated from the inner wall of the wire tube 100, avoiding the metal column 400 hitting the inner wall of the wire tube 100 by shaking back and forth in the wire tube 100, and reducing the damage to the inner wall of the wire tube 100. The centers of the arcs where the ends of the plurality of support rods 500 away from the axis of the metal column 400 are eccentrically arranged with respect to the metal column 400, so that after the metal column 400 enters the wire tube 100, it rotates eccentrically around the axis of the wire tube 100 while moving forward. During the process of the metal column 400 advancing spirally in the wire tube 100, when encountering an obstacle, the metal column 400 deflects to avoid the obstacle encountered in the wire tube 100. At the same time, when the metal column 400 in the front passes through a bent portion, the way the metal column 400 advances spirally in the wire tube 100 increases the turning amplitude of the metal column 400 in the front, which is beneficial to the metal column 400 passing through the bent portion of the wire tube 100 and improves the wire threading effect. When the metal column 400 passes through an obstacle or a bent portion, when the operator pushes the metal column 400 and it cannot rotate to avoid the obstacle (that is, when the metal column 400 reaches an obstacle or a bent portion, etc., and the distance of pushing the traction rope 200 is not enough for the metal column 400 to rotate and avoid the obstacle), the operator can pull the traction rope 200 back a certain distance and then continue to push the traction rope 200 to make the metal column 400 rotate to avoid the obstacle, so as to achieve turning and obstacle avoidance.

[0029] After the metal column 400 is passed through from one end of the wire tube 100 to the other end, the two hinge shafts 510 are squeezed, the mounting spring 511 is compressed, so that the hinge shafts 510 are disengaged from the hinge holes. At the same time, the connection column 531 is pulled out from the metal column 400 and the support rod 500, and the support spring 530 is removed to remove the support rod 500 from the metal column 400. Then the beam coil is bundled and clamped between the two metal columns 400, and the cable and the beam coil are fixedly connected. By dragging, the traction rope 200 is pulled back, so that the metal column 400 drives the cable to pass through the wire tube 100 through the beam coil.

[0030] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An electrical system wire threading device for building construction, characterized in that: It includes a towing rope; the towing ropes are arranged front and back; a connecting spring is provided at the front end of the towing rope; the connecting spring and the towing rope are coaxial; the rear end of the connecting spring is fixedly connected to the front end of the towing rope through a connecting component, and a towing device is provided at the front end; The towing device includes metal columns; there are two metal columns; the two metal columns are distributed front and back; the metal columns are cylinders with their axes arranged front and back; the metal columns and the connecting spring are coaxial; the rear metal column and the connecting spring are rotatably connected through a rotating component; the rear end of the front metal column and the front end of the rear metal column are ball-jointed; elastic support components are provided on the side walls of both metal columns; There are multiple elastic support components on each metal column; the multiple elastic support components are circumferentially distributed along the metal column; the multiple elastic support components elastically support the metal column in the wire tube against the elastic force and keep the metal column out of contact with the inner wall of the wire tube; when the metal column moves to a turning point of the wire tube, the elastic support component near the inner corner of the wire tube bend on the front metal column is suspended, and the elastic support component near the outer corner of the wire tube bend releases the elastic force to push the front metal column to deflect towards the bent wire tube; the elastic support component includes a support rod; the projection of the axis of the support rod on the vertical plane perpendicular to the axis of the metal column is arranged along the radial direction of the metal column; the projection of the axis of the support rod on the vertical plane parallel to the axis of the metal column is inclined with respect to the vertical direction, and the end of the support rod near the axis of the metal column is in front of the end of the support rod away from the axis of the metal column; the end of the support rod near the axis of the metal column is hinged to the side wall of the metal column through a hinge structure; an elastic structure is provided between the support rod and the metal column; the elastic structure is used to make the end of the support rod away from the axis of the metal column abut against the inner wall of the wire tube; the lengths of the multiple support rods of the same elastic support component are different, and the center of the arc where the ends of the multiple support rods away from the axis of the metal column are located is eccentrically arranged with respect to the metal column.

2. The electrical system wire threading device for building construction according to claim 1, characterized in that: The hinge structure includes ear plates and a hinge shaft; there are two ear plates symmetrically; the ear plates are fixed on the side wall of the metal column; hinge holes are provided on the ear plates; the axis of the hinge hole is tangent to the side wall of the metal column; the hinge shaft is provided at the end of the support rod near the axis of the metal column; the hinge shaft and the hinge hole are coaxial and in rotational fit.

3. An electrical system wire threading device for building construction according to claim 2, characterized in that: There are two hinge shafts symmetrically; the two hinge shafts are coaxially arranged; an installation spring is fixedly connected between the two hinge shafts; the hinge shaft and the support rod are in sliding fit.

4. An electrical system wire threading device for building construction according to claim 3, characterized in that: The angle between the axis of the hinge hole and the generatrix of the metal column is an acute angle.

5. An electrical system wire threading device for building construction according to claim 4, characterized in that: The elastic structure includes a support spring; connecting columns are fixed at both ends of the support spring; the connecting column at one end of the support spring is inserted into the side wall of the metal column, and the connecting column at the other end of the support spring is inserted into the support rod.

6. The wire threading device for an electrical system in building construction according to claim 1, characterized in that: The ends of the two metal columns close to each other are both arc-shaped.

7. An electrical system wire threading device for building construction according to claim 1, characterized in that: A pulley is rotatably installed at the front end of the front metal column.

8. An electrical system wire threading device for building construction according to claim 1, characterized in that: The connecting component includes a connecting cylinder; one end of the connecting cylinder is fixedly connected to the towing rope, and the other end is fixedly connected to the connecting spring; the rotating component includes a rotating column; one end of the rotating column is fixedly connected to the connecting spring, and the other end is in rotational fit with the rear metal column.

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