Contact network insulation gap adjuster
By designing the contact network insulation gap regulator, the problem of insufficient insulation gap in the contact network is solved, and flexible adjustment and stability of the insulation gap are achieved to ensure the normal operation of the contact network.
Patent Information
- Application Number
- CN202421859589.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-02
AI Technical Summary
The insulation gap between the anchor bridge electrical connection and the device-type phase-divided switch in the ordinary-speed railway contact network tunnel is insufficient, resulting in safety hazards such as tripping and disconnection or electrical burn clues. The existing adjustment methods are poor in flexibility.
A contact net insulation gap adjuster is designed, including female support clamps, adjuster body and anti-slip pins, which enables adjustability of insulation gaps through threaded connections and fastening bolts, and uses CuNi2Si and T2 materials for improved stability and durability.
It realizes flexible adjustment of insulation gaps, which can withstand the influence of seasonal temperature changes and train vibration, ensure the normal operation of the contact network, and reduce the risk of tripping and disconnection.
Smart Images
Figure CN223085863U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a catenary, in particular to a catenary insulation gap regulator. Background Art
[0002] In the catenary of ordinary-speed railways, the sag of the overhead contact wire in the common tunnel may be affected by seasonal temperature changes or other factors, resulting in insufficient insulation gaps, which may cause tripping and wire breakage or electrical burns to the wire. In addition, the lead wire of the device type phase separation switching device is affected by temperature changes or wind swing factors, resulting in insufficient insulation distance, which may cause tripping and wire breakage and affect the power supply of the catenary. At present, on-site adjustment often only involves adding or adjusting the position of the catenary wire clamp to adjust the wire sag. This method has poor flexibility and cannot eliminate the potential safety hazards of tripping, wire breakage or wire burns caused by insufficient insulation gaps due to the stretching of the wire or the vibration of the pantograph in the later stage. Summary of the Utility Model
[0003] Purpose of the utility model: The purpose of the utility model is to provide a catenary insulation gap regulator for the problems of insufficient insulation gaps in the sag of the overhead contact wire in the common tunnel of the ordinary-speed railway catenary and insufficient insulation gaps in the lead wire of the device type phase separation switching device, so as to physically isolate the positions that need to adjust the electrical insulation and ensure the normal operation of the overhead contact wire tunnel mid-anchor bridge and phase separation switch.
[0004] Technical solution: The catenary insulation gap regulator described in the utility model includes a female support terminal clamp, a regulator body and an anti-slip pin. A screw rod is threadedly connected to each of the upper and lower ends of the regulator body, and the thread directions of the two screw rods are opposite; the end of the screw rod located outside the regulator body is U-shaped, and the female support terminal clamp is U-shaped. The female support terminal clamp is connected to the outer end of the screw rod through a fastening bolt; the anti-slip pin is inserted between the fastening bolt and the catenary wire / lead wire to prevent the insulation gap regulator from sliding.
[0005] Furthermore, the catenary insulation gap regulator further includes a male support terminal clamp. The male support terminal clamp is U-shaped and has two opposite clip fasteners adapted to the dovetail groove of the contact wire; the male support terminal clamp is fixed on the contact wire by using the clip fasteners and is connected to the outer end of the screw rod through a fastening bolt.
[0006] Furthermore, the regulator body is integrally O-shaped, and the upper and lower ends are nut structures.
[0007] Furthermore, an open pin socket is provided at the end of the screw rod located inside the regulator body for inserting an open pin to prevent the screw rod from detaching from the regulator body.
[0008] Furthermore, the adjustable length range of the insulation gap is 450 - 750 mm.
[0009] Furthermore, the male branch terminal clamp is a male branch terminal clamp made of CuNi2Si material, the female branch terminal clamp is a female branch terminal clamp made of CuNi2Si material, the regulator body is a regulator body made of CuNi2Si material, and the screw is a screw made of CuNi2Si material.
[0010] Furthermore, the anti-slip pin is an anti-slip pin made of T2 material.
[0011] Furthermore, the fastening bolt is a fastening bolt made of stainless steel material.
[0012] Beneficial effects: Compared with the prior art, the present utility model has the following advantages: the insulation gap is adjustable, there is no need to worry about the influence of the telescopic change of the wire caused by seasonal temperature changes and the change of the insulation distance caused by the vibration of the train. In addition, the direction of the lead wire to be adjusted can also be adjusted, which is more flexible than the existing method of installing an electric connection clamp to adjust the overhead bridge electric connection or the lead wire of the split-phase zone-switching switch in the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is a schematic diagram of the male-female structure of the insulation gap regulator in the embodiment of the present utility model, where Figure 1 (a) is the front view, Figure 1 (b) is the side view;
[0014] Figure 2 is a schematic diagram of the female-female structure of the insulation gap regulator in the embodiment of the present utility model, where Figure 2 (a) is the front view, Figure 2 (b) is the side view;
[0015] Figure 3 is a schematic diagram of the installation of the overhead bridge electric connection in the tunnel using the insulation gap regulator in the embodiment of the present utility model;
[0016] Figure 4 is a diagram of the existing split-phase zone-switching switch for conventional speed railways;
[0017] Figure 5 is a schematic diagram of using the insulation gap regulator for the lead wire of the split-phase zone-switching switch for conventional speed railways in the embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] The present utility model will be further described below with reference to the accompanying drawings.
[0019] In Figures 1 to 4 the accompanying drawings, the reference numerals are as follows:
[0020] 1, male branch terminal clamp; 2, female branch terminal clamp; 3, regulator body; 4, anti-slip pin; 5, split pin socket; 6, screw; 7, fastening bolt.
[0021] AsFigure 1 and Figure 2 As shown in Figure 2 , an embodiment of the utility model provides a catenary insulation gap adjuster, which includes a male branch terminal clamp 1, a female branch terminal clamp 2, an adjuster body 3 and an anti-slip pin 4. The adjuster body 3 is integrally in an O shape, and its upper and lower ends are nut structures, each threadedly connected to a screw rod 6, and the two screw rods 6 have opposite thread rotation directions. The end of the screw rod 6 located outside the adjuster body 3 is in a U shape, the female branch terminal clamp 2 is in a U shape, and the female branch terminal clamp 2 is connected to the outer end of the screw rod 6 through a fastening bolt 7. The anti-slip pin 4 is inserted between the fastening bolt 7 and the catenary / lead wire to prevent the insulation gap adjuster from sliding. The male branch terminal clamp 1 is in a U shape and has two opposite clamps adapted to the dovetail groove of the contact wire. The male branch terminal clamp 1 is fixed on the contact wire by using the clamps and is connected to the outer end of the screw rod 6 through a fastening bolt 7. In addition, an open pin socket 5 is provided at the end of the screw rod 6 located inside the adjuster body 3 for inserting an open pin to prevent the screw rod 6 from detaching from the adjuster body 3.
[0022] In this embodiment, the adjustable length range of the insulation gap of the insulation gap adjuster is 450 - 750 mm. The materials of the male branch terminal clamp 1, the female branch terminal clamp 2, the adjuster body 3, and the screw rod 6 are CuNi2Si, the material of the anti-slip pin 4 is T2, and the material of the fastening bolt 7 is stainless steel.
[0023] The insulation gap adjuster has two structural forms. When male and female branch terminal clamps are respectively arranged at both ends, it is a male-female structure, as shown in Figure 1 ; when female branch terminal clamps are arranged at both ends, it is a female-female structure, as shown in Figure 2 . Figure 1 shown; when female branch terminal clamps are arranged at both ends, it is a female-female structure, as shown in Figure 2 shown.
[0024] For the male-female structure insulation gap adjuster, the sliding load between the male branch end and the contact wire is greater than or equal to 1.0 kN, and the sliding load between the female branch end and the catenary is greater than or equal to 1.0 kN. For the female-female structure insulation gap adjuster, the sliding load between the female branch end and the catenary is greater than or equal to 1.0 kN. The breaking load of the insulation gap adjuster is not less than 3 kN, and the maximum vertical working load of the insulation gap adjuster is 1.3 kN.
[0025] The male-female structure insulation gap adjuster is suitable for adjusting the insufficient gap between the lead wire and the mid-anchor insulator at the position of the mid-anchor crossing bridge in the tunnel of the catenary system of electrified railways at normal speed. The insulation gap of the tunnel mid-anchor crossing bridge is adjusted by connecting the male branch end to the contact wire and the female branch end to the mid-anchor crossing bridge lead wire or the catenary. After connecting the relevant objects, fix the male and female branch end bolts (25 N.m), turn the adjuster body 3 to adjust the insulation gap of the object with insufficient insulation. After confirming the adjustment length, insert the anti-slip pin 4 to complete the adjustment.
[0026] The mother-mother structure insulation gap regulator is applicable to adjusting the positions with insufficient gaps between the lead wire and the mid-anchor insulator in the mid-anchor overbridge in the tunnel of the conventional catenary system of electrified railways, as well as the positions with insufficient insulation distance of the lead wire of the device-type phase separation section disconnector. The adjustment of the insulation gap of the mid-anchor overbridge in the tunnel is achieved by connecting the mid-anchor overbridge lead wire or the catenary through the two end mother branches. The insulation gap adjustment is achieved by connecting the lead wire of the section disconnector and the feeder. Specifically, the mother-mother structure insulation gap regulator connects the lead wire or the catenary through one end mother branch, and connects the catenary or the lead wire through the other end mother branch. After connecting the relevant objects, fix the bolts of the two mother branches (25 N.m), turn the regulator body 3 to adjust the insulation gap of the object with insufficient insulation. After confirming the adjustment length, insert the anti-slip pin 4 to complete the adjustment.
[0027] The schematic installation diagram of using the insulation gap regulator for the electric connection of the mid-anchor overbridge in the tunnel is as Figure 3 shown. The current schematic diagram of the section disconnector of the conventional railway is as Figure 4 shown. The existing lead wires of the device-type phase separation section disconnectors often have insufficient distance from the insulator due to seasonal temperature changes or wind swing, resulting in the risk of tripping or wire breakage. The schematic installation diagram of using the insulation gap regulator is as Figure 5 shown.
[0028] The insulation gap regulator provided by the present utility model utilizes the two end wire clips to be installed at the positions where the insulation distance needs to be adjusted, ensures a sufficient insulation distance (450 mm to 750 mm) for the energized part of the catenary by adjusting its own length, can change the orientation angle of the installed lead wire (0° to 180°), and enables physical isolation of the positions that need to adjust electrical insulation. After installation, it ensures the normal operation of the mid-anchor overbridge and the section disconnector of the catenary tunnel.
Claims
1. An overhead contact line insulation gap regulator, characterized in that, It includes a female branch end clamp (2), a regulator body (3) and an anti-slip pin (4). A screw rod (6) is threadedly connected to each of the upper and lower ends of the regulator body (3), and the thread directions of the two screw rods (6) are opposite; the end of the screw rod (6) located outside the regulator body (3) is U-shaped, and the female branch end clamp (2) is U-shaped. The female branch end clamp (2) is connected to the outer end of the screw rod (6) by a fastening bolt (7); the anti-slip pin (4) is inserted between the fastening bolt (7) and the carrier cable / lead wire to prevent the insulation clearance regulator from sliding.
2. The catenary insulation gap regulator according to claim 1, characterized in that, It further includes a male branch end clamp (1). The male branch end clamp (1) is U-shaped and has two opposite clip buckles adapted to the dovetail groove of the contact wire; the male branch end clamp (1) is fixed to the contact wire by using the clip buckles and is connected to the outer end of the screw rod (6) by a fastening bolt (7).
3. The catenary insulation gap adjuster according to claim 1 or 2, characterized in that The regulator body (3) is integrally O-shaped, and the upper and lower ends are nut structures.
4. The catenary insulation gap adjuster according to claim 3, characterized in that, An open pin socket (5) is provided at the end of the screw rod (6) located inside the regulator body (3) for inserting an open pin to prevent the screw rod (6) from detaching from the regulator body (3).
5. The catenary insulation clearance regulator according to claim 1 or 2, characterized in that, The adjustable length range of the insulation clearance is 450 - 750 mm.
6. The catenary insulation gap regulator according to claim 2, wherein, The male branch end clamp (1) is a male branch end clamp made of CuNi2Si material, the female branch end clamp (2) is a female branch end clamp made of CuNi2Si material, the regulator body (3) is a regulator body made of CuNi2Si material, and the screw rod (6) is a screw rod made of CuNi2Si material.
7. The catenary insulation clearance adjuster according to claim 2, characterized in that, The anti-slip pin (4) is an anti-slip pin made of T2 material.
8. The catenary insulation gap adjuster according to claim 2, characterized in that, The fastening bolt (7) is a fastening bolt made of stainless steel material.