Special tool for pre-twisted wire installation

Abstract

The invention relates to the technical field of pre-twisted wire installation, in particular to a special tool for pre-twisted wire installation, which comprises two arc-shaped shells matched with each other, one sides of the two arc-shaped shells along the linear radial direction are hinged with each other, the other sides of the two arc-shaped shells are clamped, and one end surface of each arc-shaped shell is provided with a plurality of twisted wire guide holes at intervals along the shape of the arc-shaped shell. The distances between the multiple twisted wire guide holes and the end face of the arc-shaped shell are gradually decreased along the shape of the arc-shaped shell, internal threads are arranged on the inner side of the arc-shaped shell, the internal threads are arranged on the faces, close to each other, of the arc-shaped shell and used for making contact with the outer surface of a wire, and two handles are arranged on the arc-shaped shell at intervals. The distance between the twisted wire guide hole and the end face of the shell is gradually reduced, so that the heights of the tail parts of a plurality of pre-twisted wires inserted into the twisted wire guide hole are circularly and gradually reduced, a pre-twisted wire mounting worker can mount the pre-twisted wires by rotating the arc-shaped shell, and when the tail parts of the pre-twisted wires are reached, the tail parts of the pre-twisted wires can be mounted in the arc-shaped shell. Due to the fact that the pre-twisted wires are separated from the tool one by one, the problem that the pre-twisted wires are difficult to flatten by hands due to the fact that tension of the pre-twisted wires is all concentrated together is solved.

Description

Technical Field

[0001] The invention relates to the technical field of pre-twisted wire installation, and in particular to a special tool for pre-twisted wire installation. Background Art

[0002] At present, pre-twisted wire is widely used in power transmission and distribution, and can repair damaged wires in time, playing a pivotal role. The material and structure of pre-twisted wire determine that its use is difficult. When winding, the swing range is large, and it is easy to touch the adjacent phase conductor or the safety distance is not enough, which can easily cause accidents; especially at the end of winding, the tension of the pre-twisted wire is all concentrated together, which is difficult to smooth by hand, and the construction is difficult. Usually, it can only be handled by brutal operation, which is not conducive to the safety of operators and does not meet the maintenance process requirements. Summary of the invention

[0003] The invention provides a special tool for installing pre-twisted wires, aiming to solve the problem in the related art that, especially at the end of winding, the tension of the pre-twisted wires is all concentrated together and is difficult to be smoothed by hand.

[0004] A special tool for installing pre-twisted wires of the present invention comprises two arc-shaped shells that cooperate with each other, wherein one side of the two arc-shaped shells along a straight radial direction is hingedly connected to each other, and the other side is clamped, and one end face of the arc-shaped shell is provided with a plurality of twisted wire guide holes at intervals along its shape, respectively used to insert at least one pre-twisted wire, and the distances between the plurality of twisted wire guide holes and the end face of the arc-shaped shell gradually decrease along the shape of the arc-shaped shell, an internal thread is provided on the inner side of the arc-shaped shell, and the internal thread is provided on a side of the arc-shaped shell that is close to each other, and is used to contact the outer surface of the wire, and two handles are provided on the arc-shaped shell at intervals for rotating the arc-shaped shell.

[0005] The advantageous effect of this optimization is that the distance between the wire guide hole and the end face of the shell is gradually decreased, so that the height of the tail of multiple pre-twisted wires after being respectively inserted into the wire guide holes is circular and gradually decreases, so that the pre-twisted wire installer can install the pre-twisted wire by rotating the arc-shaped shell and when reaching the tail of the pre-twisted wire, the pre-twisted wire can be detached from the tool one by one due to the setting, thereby solving the problem that the tension of the pre-twisted wire is all concentrated together and it is difficult to smooth it out by hand.

[0006] Preferably, a gathering portion is provided on the arc-shaped housing, and the gathering portion is arranged on a side close to the insertion end of the twisted wire guide hole for gathering the pre-twisted wires. A limiting net is extended on the gathering portion for limiting the range of movement of the pre-twisted wires during installation.

[0007] The preferred advantageous effects are: the pre-twisted wire near one end of the wire guide hole is gathered by the gathering part, and the moving range of the pre-twisted wire during the installation process of the pre-twisted wire is limited by the limiting net to avoid contact with other wires except the non-installed wires.

[0008] Preferably, the folding portion comprises a connecting rod clamped on the arc-shaped housing, a folding ring is clamped on the other end of the connecting rod, an extension rod is clamped on the folding ring, and the other end of the extension rod is clamped with the restriction net.

[0009] Preferably, the other sides of the two arc-shaped shells that are hinged to each other are connected by bolts.

[0010] Preferably, an insulating layer is provided on the arc-shaped housing.

[0011] The preferred advantageous effect is that the arc-shaped housing is insulated from the conductor by the insulating layer, so that the conductor can be pre-twisted and installed even in a non-power-off state.

[0012] Preferably, an equipotential connector is provided on the arc-shaped housing.

[0013] The preferred advantageous effect is: achieving equipotential connection of each independent phase-insulated part in the temporary system, so as to prevent the ground potential from damaging the equipment and protect the safety of the equipment.

[0014] Preferably, an anti-slip layer is provided in the pre-twisted wire groove.

[0015] The preferred beneficial effect is that the connection degree of the pre-twisted wire after being inserted into the pre-twisted wire groove is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the end face of the curved shell.

[0017] Figure 2 It is the front view of the curved housing.

[0018] Figure 3 It is a schematic diagram of the internal structure of the arc-shaped shell.

[0019] Figure 4 It is a structural schematic diagram of the gathering part and the limiting net.

[0020] Reference numerals:

[0021] 1. Arc-shaped outer shell; 2. Twisted wire guide hole; 3. Internal thread; 4. Handle; 5. Gathering part; 51. Connecting rod; 52. Gathering ring; 53. Extension rod; 6. Limiting net; 7. Insulating layer; 8. Equipotential connector. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0023] like Figures 1 to 3As shown, a special tool for installing pre-twisted wires of the present invention comprises two arc-shaped shells 1 of the same size and shape, wherein one side of the two arc-shaped shells 1 along a straight radial direction is hingedly connected to each other, and the other side is clamped. After the other sides of the two arc-shaped shells 1 are clamped, a cylindrical shell is formed, and one end face of the arc-shaped shell 1 is provided with a plurality of twisted wire guide holes 2 at intervals along its shape, which are respectively used to insert at least one pre-twisted wire, and the distance between the plurality of twisted wire guide holes 2 and the end face of the arc-shaped shell gradually decreases along the shape of the arc-shaped shell 1, and an internal thread 3 is provided on the inner side of the arc-shaped shell 1, and the internal thread 3 is arranged on a side of the arc-shaped shell close to each other, for contacting the outer surface of the wire, and two handles 4 are arranged at intervals on the arc-shaped shell 1 for rotating the arc-shaped shell 1.

[0024] In this specific embodiment, the wire maintenance staff puts two arc-shaped shells 1 on the wire, and after one-time clamping of the two arc-shaped shells 1, the installation of the arc-shaped shells 1 is completed, and the pre-twisted wires are inserted into the wire guide holes 2 in sequence. The staff holds the handle and rotates the arc-shaped shell 1 to wind and install multiple pre-twisted wires on the wire. When the pre-twisted wires reach the tail, the pre-twisted wires can be detached from the tool one by one, which solves the problem that the tension of the pre-twisted wires is concentrated together and difficult to smooth out by hand.

[0025] like Figure 4 As shown, further, the arc-shaped shell 1 is provided with a gathering portion 5, which is arranged on a side close to the insertion end of the twisted wire guide hole 2 and is used to gather the pre-twisted wire. A limiting net 7 is extended from the gathering portion 5 to limit the range of movement during the installation of the pre-twisted wire.

[0026] like Figure 4 As shown, specifically, the folding portion 5 includes a connecting rod 51 clamped on the arc-shaped outer shell 1, and the other end of the connecting rod 51 is clamped with a folding ring 52, and the folding ring 52 is clamped with an extension rod 53, and the other end of the extension rod 53 is clamped with the limiting net 7. Preferably, the connecting rod 51 can also be detachably connected to the arc-shaped outer shell by fasteners such as rivets or bolts.

[0027] like Figure 1 As shown, preferably, an insulating layer 7 is provided on the arc-shaped housing 1, and the arc-shaped housing is insulated from the conductor by the insulating layer, so that the conductor can be pre-twisted and installed even in a non-power-off state.

[0028] like Figure 4 As shown, preferably, an equipotential connector 8 is provided on the arc-shaped housing 1 to achieve equipotential connection of each independent phase-insulated part in the temporary system to prevent ground potential back-strike from damaging the equipment and protect the safety of the equipment.

[0029] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A special tool for installing pre-twisted wire, characterized in that: The invention comprises two arc-shaped shells (1) which cooperate with each other, wherein one side of the two arc-shaped shells (1) along a straight radial direction is hingedly connected to each other, and the other side is clamped, one end surface of the arc-shaped shell (1) is provided with a plurality of twisted wire guide holes (2) at intervals along its shape, each of which is used to insert at least one pre-twisted wire, and the distance between the plurality of twisted wire guide holes (2) and the end surface of the arc-shaped shell (1) gradually decreases along the shape of the arc-shaped shell (1), the inner side of the arc-shaped shell (1) is provided with an internal thread (3), and the internal thread (3) is arranged on a side of the arc-shaped shell close to each other, and is used to contact the outer surface of the wire, and two handles (4) are arranged at intervals on the arc-shaped shell (1) for rotating the arc-shaped shell (1).

2. A special tool for installing pre-twisted wire according to claim 1, characterized in that: The arc-shaped housing (1) is provided with a gathering portion (5), which is arranged on a side close to the insertion end of the twisted wire guide hole (2) and is used to gather the pre-twisted wires. A limiting net (5) is extended from the gathering portion (5) and is used to limit the range of movement when the pre-twisted wires are installed.

3. A special tool for installing pre-twisted wire according to claim 1 or 2, characterized in that: The folding portion (5) comprises a connecting rod (51) clamped on the arc-shaped housing (1); the other end of the connecting rod (51) is clamped with a folding ring (52); the folding ring (52) is clamped with an extension rod (53); the other end of the extension rod (53) is clamped with the limiting net (5).

4. A special tool for installing pre-twisted wire according to claim 1 or 2, characterized in that: The other sides of the two arc-shaped shells (1) that are hinged to each other are connected via bolts.

5. A special tool for installing pre-twisted wire according to claim 1 or 2, characterized in that: An insulating layer (5) is provided on the arc-shaped housing (1).

6. A special tool for installing pre-twisted wire according to claim 1 or 2, characterized in that: The arc-shaped housing (1) is provided with an equipotential connector (5).

7. A special tool for installing pre-twisted wire according to claim 1 or 2, characterized in that: An anti-slip layer is provided in the twisted wire guide hole (2).

Images