Fixing device for contact line splicing

Abstract

The utility model discloses a fixing device for splicing contact lines, which comprises a bearing part, a pair of clamping parts capable of respectively clamping and fixing two sections of contact lines are arranged on the bearing part, at least one clamping part can rotate on the bearing part around a shaft basically parallel to the axis of the contact line to be spliced, and the clamping parts are arranged on the bearing part. A positioning part capable of positioning the circumferential angle of the contact line is arranged on the clamping part; by adopting the technical scheme, at least one clamping part can rotate, and when the contact wire is clamped and fixed, the clamping part is moved to a proper position to clamp the contact wire by rotating the angle of the clamping part, so that the whole fixing device is prevented from rotating, the operation is convenient and labor-saving, and the damage to the contact wire caused by repeated twisting of the contact wire is avoided.

Description

Technical Field

[0001] The utility model relates to a maintenance tool, in particular to a maintenance tool for a contact line. Background Art

[0002] As an important component of the contact network, the contact wire is generally made into a cylindrical shape with grooves on both sides. The grooves are for the convenience of installing wire clamps and suspending the contact wire without affecting the sliding current collection of the pantograph slide. The part of the contact wire that contacts the pantograph slide is in an arc shape, which is called the working surface of the contact wire. The contact wire directly transmits current to the electric locomotive through sliding friction with the pantograph slide on the electric locomotive. Its performance directly affects the current collection quality of the electric locomotive and the safe operation of the locomotive.

[0003] When the contact wire is broken, it needs to be repaired. After the two contact wires are aligned, they are connected and fixed using a connecting wire clamp as disclosed in announcement number CN208904232U. When installing the connecting wire clamp, the two contact wires to be connected need to be fixed using a contact wire fixing device. The tools used are fixed by a fixing device as disclosed in announcement number CN207173350U. The fixing device fixes the contact wire by fixing a fixing mechanism at each end of a support rod, and then installs the connecting wire clamp.

[0004] However, the two fixing mechanisms of the existing fixer are fixed, and the grooves for clamping the contact wire are coaxial and collinear. When the contact wire is actually fixed, the two broken sections of the contact wire cannot be perfectly collinear, and generally there will be relative deflection. When the existing fixer is used to fix the contact wire, it is necessary to first fix one section of the contact wire, and then rotate the entire fixer to deflect the other fixing mechanism to the position of the other section of the contact wire, and then fix the other section of the contact wire. The operation is inconvenient, and the overall rotation of the fixer will also be resisted by the fixed contact wire, making it difficult to rotate, and at the same time it will drive the fixed contact wire to be twisted. Utility Model Content

[0005] In order to provide a fixing device for connecting contact wires, which is convenient for clamping two sections of contact wires, the technical solution adopted by the utility model is:

[0006] A fixing device for contact line splicing includes a bearing portion, on which is provided a pair of clamping portions capable of clamping and fixing two sections of contact line respectively, at least one of the clamping portions being capable of rotating on the bearing portion around an axis substantially parallel to the axis of the contact line to be spliced, and a positioning portion capable of positioning the circumferential angle of the contact line.

[0007] Furthermore, a support platform for supporting the end of the contact wire is arranged on the bearing portion.

[0008] Furthermore, the support surface of the support platform for supporting the contact line can be adjusted in height.

[0009] Furthermore, a locking mechanism capable of locking the clamping portion is provided between the rotatable clamping portion and the bearing portion.

[0010] Furthermore, it also includes a handle for holding the rod.

[0011] Furthermore, the holding rod is hinged to the clamping part.

[0012] Furthermore, the positioning portion is provided with a protrusion that can be inserted into the contact line groove.

[0013] By adopting the above technical solution, since at least one of the clamping parts can rotate, when clamping and fixing the contact line, the clamping part can be moved to a suitable position to clamp the contact line by rotating the angle of the clamping part, thereby avoiding the need to rotate the entire fixing device, making the operation convenient and labor-saving, and avoiding damage to the contact line caused by repeated twisting of the contact line. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the fixing device structure;

[0015] Figure 2 A diagram showing the status of using the tool to continue the contact line;

[0016] Figure 3 Schematic diagram of the locking mechanism structure. DETAILED DESCRIPTION

[0017] In order to better understand the inventive concept of the utility model, the technical solution of the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] like Figure 1 The fixing device shown includes a rod as a bearing part 1, and clamping parts 2 are respectively arranged at both ends of the bearing part 1. The clamping parts 2 are used to clamp and fix two sections of the contact wire. Figure 1 In the embodiment shown, the clamping part 2 is composed of a pair of hinged clamping plates 2-1, and a locking bolt 2-2 is arranged between the two clamping plates 2-1 to keep the two clamping plates 2-1 in a closed clamping state. When the contact line needs to be clamped and fixed, firstly, Figure 1 As shown in the left clamping part 2, keep the two clamping plates 2-1 in a separated state, put the contact wire between the two clamping plates 2-1 from the opening, and then Figure 1 The right side clamping part 2 is shown to close the two clamping plates 2-1 and lock the two clamping plates 2-1 through the locking bolts 2-2, so that the contact line a is clamped and fixed by the two clamping plates 2-1.

[0019] Due to the special cross-sectional shape of the contact line, Figure 2 The contact wire a shown in the figure is provided with two grooves b for installing the wire clamp, and the two grooves b are also the parts for the extension wire clamp to clamp and fix the contact wire. Therefore, when installing the extension wire clamp, it is necessary to keep the grooves on the contact wire in a colinear position, that is, it is necessary to keep the circumferential angles of the two sections of the contact wire consistent. The method for achieving the consistency of the axial angles of the two sections of the contact wire is to use a positioning part 3 provided on the clamping part 2. The positioning part 3 is as shown in FIG. Figure 1 The embodiment shown is a hole-like structure arranged on the clamping portion 2. Two protrusions 3-1 are arranged inside the hole-like structure, and when the clamping portion 2 clamps and fixes the contact line, the protrusions 3-1 are inserted into the groove b of the contact line a to achieve the circumferential angle positioning of the contact line. It can be seen from this embodiment that the contour of the hole-like structure serving as the positioning portion 3 basically matches the cross-sectional structure of the contact line, so that the contact line is fixed and clamped more firmly.

[0020] As described above, after the circumferential angle of the contact line is positioned, keeping the two positioning portions 3 overlapped in the axial direction of the contact line can ensure that the groove positions on the two fixed contact lines are in a colinear position.

[0021] Of course, the collinearity mentioned above refers to the state after the contact line is fixed and straightened. Before the contact line is fixed, the part of the contact line to be connected will not be perfectly collinear. There will be some deviations in both the spatial position and the circumferential angle between the two sections of the contact line. In order to clamp and fix the contact line, it is necessary to rotate the clamping part 2 to the corresponding position of the contact line, and then clamp and fix the contact line. Different from the existing fixing device, at least one of the clamping parts 2 in this fixing device can rotate around the axis of the rod-shaped bearing part 1 (that is, basically parallel to the axis of the contact line) to Figure 1 Taking the shown embodiment as an example, the clamping part 2 on the left is fixed on the bearing part 1, and the clamping part 2 on the right is rotatably arranged on the bearing part 1. Of course, both clamping parts 2 can be rotatably arranged on the bearing part 1, but in actual use, both clamping parts 2 are rotatably arranged and there is no need for this, because when clamping one section of the contact line, it is easy to clamp the contact line by adjusting the entire fixing device, and when clamping and fixing the other contact line, it is only necessary to rotate the movable clamping part 2 to the corresponding position of the contact line for clamping and fixing.

[0022] As described above, after the two contact lines are clamped and fixed by the clamping part 2, the clamping part 2 can be rotated to force the contact line thereon to move to a position collinear with the contact line clamped by the fixed clamping part 2, such as Figure 2 As shown, the alignment of the two contact wires is completed. As mentioned above, the positioning parts 3 on the two clamping parts 2 overlap in the axial direction of the contact wires, so that the contact wire grooves are also aligned, thereby facilitating the installation and fixation of the extension wire clamp.

[0023] In order to position the rotatable clamping part 2 to correspond to the fixed clamping part (to keep the two positioning parts overlapped on the contact line axis) and prevent the rotatable clamping part 2 from being rotated, a locking mechanism 5 is provided between the rotatable clamping part 2 and the bearing part 1. Specifically, the locking mechanism 5 can be adopted as follows: Figure 3 The structure shown has an elastic positioning pin 5-1 in the bearing part 1 and a positioning hole 5-2 on the clamping part 2. When the clamping part 2 is rotated to the right position, the positioning pin 5-1 springs into the positioning hole 5-2 to lock the clamping part 2. When the clamping part 2 needs to be rotated, the positioning pin 5-1 is pressed through the positioning hole 5-2 to withdraw from the positioning hole 5-2, so that the clamping part 2 can be rotated.

[0024] In order to support the two contact wire ends, a support platform 4 is further provided on the bearing portion 1, and the two clamped, fixed and aligned contact wire ends are placed on the support platform 4, which facilitates the installation and fixation of the extension wire clamp.

[0025] Since the end of the contact line may be bent, in order to correct the bending of the end of the contact line, the height of the support surface of the support platform 4 can be adjusted. Figure 1 The support platform 4 shown is movably arranged on the bearing part 1 through the guide column 4-1, and an adjusting bolt 4-2 is also arranged on the bearing part 1. By screwing the adjusting bolt 4-2, the support surface height of the support platform 4 is changed, thereby forcibly correcting the direct contact line and aligning the two contact line ends.

[0026] For the convenience of operation, a holding rod 6 is also provided in the fixing device for the operator to hold and operate. For the convenience of rotating the rotatable clamping part 2, the holding rod 6 is provided on the clamping part 2. For the convenience of storage and carrying, the holding rod 6 is hingedly connected to the clamping part 2. When operation is required, the holding rod 6 can be unfolded.

Claims

1. A fixing device for contact wire splicing, comprising a bearing portion (1), on which a pair of clamping portions (2) capable of clamping and fixing two sections of contact wire are arranged, characterized in that: At least one of the clamping parts (2) is rotatable on the bearing part (1) around an axis substantially parallel to the axis of the contact line to be connected, and a positioning part (3) capable of positioning the circumferential angle of the contact line is provided on the clamping part (2).

2. A contact wire connection fixing device according to claim 1, characterized in that: A support platform (4) for supporting the end of the contact line is arranged on the bearing part (1).

3. A contact wire connection fixing device according to claim 2, characterized in that: The support surface height of the support platform (4) used to support the contact line can be adjusted.

4. A contact wire connection fixing device according to claim 1, characterized in that: A locking mechanism (5) capable of locking the clamping part (2) is provided between the rotatable clamping part (2) and the bearing part (1).

5. A contact wire connection fixing device according to claim 1, characterized in that: Also included is a handle (6).

6. A contact wire connection fixing device according to claim 5, characterized in that: The holding rod (6) is hinged to the clamping portion (2).

7. A contact wire connection fixing device according to claim 1, characterized in that: The positioning portion (3) is provided with a protrusion (3-1) that can be inserted into the contact line groove.

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