An overhead contact line suspension structure for electrified railways

Abstract

The present application belongs to the technical field of electrified railway catenary, and particularly relates to an electrified railway catenary suspension structure, which comprises a wrist arm structure, a positioning frame rigidly connected to one end of the wrist arm structure, a transverse fixing member rigidly connected to the bottom of the positioning frame, and a positioning structure, the transverse fixing member is provided with a plurality of linearly distributed positioning holes one; the positioning structure comprises a horizontal connecting member arranged on the transverse fixing member, a vertical connecting member arranged on the horizontal connecting member, and a positioner arranged on the vertical connecting member, at least one positioning hole two is arranged on the horizontal connecting member, the positioning hole two is a through hole or a threaded hole, and the transverse fixing member and the horizontal connecting member are fastened through screws or bolts penetrating the positioning hole one and the positioning hole two, so that the number of parts is reduced, the installation and maintenance workload is lowered, the risk points are few, the overall safety is high, and the material is also saved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of electrified railway catenary suspension structure, and particularly relates to an electrified railway catenary suspension structure. BACKGROUND

[0002] The catenary suspension structure is an important component in the railway electrification system, and is used for supporting and fixing the catenary. The catenary arm is usually installed on the support on both sides of the railway track, and is used for suspending the catenary and providing power supply for the running electric locomotive or train.

[0003] The catenary suspension structure mainly comprises a horizontal arm, an inclined arm and a positioning structure. Usually, the horizontal arm, the inclined arm and the positioning structure are all equal-diameter thin-wall closed steel pipes, the connecting nodes adopt hoop parts connected through various bolts and other fasteners, the horizontal arm and the inclined arm are connected through a sleeve pipe with double ears, and the positioning structure and the arm are fixed through a positioning ring. The positioning structure is relatively fixed in the direction of the arm, so that a support is arranged on both sides of the track to install a set of catenary suspension structures, and there are many components, large installation and maintenance workload, and material waste. SUMMARY

[0004] The application aims to provide an electrified railway catenary suspension structure, which reduces the number of parts and the installation and maintenance workload.

[0005] The application provides an electrified railway catenary suspension structure, which comprises:

[0006] an arm structure;

[0007] a positioning frame rigidly connected to one end of the arm structure;

[0008] a horizontal fixing part rigidly connected to the bottom of the positioning frame, wherein the horizontal fixing part is provided with a plurality of linearly distributed positioning holes one;

[0009] a positioning structure, which comprises a horizontal connecting part arranged on the horizontal fixing part, a vertical connecting part arranged on the horizontal connecting part and a positioner arranged on the vertical connecting part, wherein the horizontal connecting part is provided with at least one positioning hole two, the positioning hole two is a through hole or a threaded hole, and the horizontal fixing part and the horizontal connecting part are fastened through a screw or a bolt penetrating the positioning hole one and the positioning hole two.

[0010] Optionally, the horizontal connecting part is provided with a plurality of linearly distributed positioning holes two, and the spacing between adjacent positioning holes two is consistent with the spacing between adjacent positioning holes one.

[0011] Optionally, the horizontal fixing part is a straight pipe, and the horizontal connecting part is sleeved on the horizontal fixing part.

[0012] Optionally, the straight connector is a straight pipe or a solid round rod.

[0013] Optionally, the end of the vertical connector is rigidly connected with a clamp I, and the vertical connector is sleeved on the straight connector through the clamp I.

[0014] Optionally, the end of the positioner is provided with a clamp II, and the positioner is sleeved on the vertical connector through the clamp II.

[0015] Optionally, the wrist arm structure comprises at least one straight wrist arm and an inclined wrist arm hinged to the stand, one end of the inclined wrist arm is hinged to the positioning frame, and the other end is hinged to the stand or the straight wrist arm, and the inclined wrist arm is a tension rod.

[0016] Optionally, the two straight wrist arms are distributed in parallel, the inclined wrist arm is arranged between the two straight wrist arms, and one end of the straight wrist arm is hinged to the straight wrist arm above.

[0017] Optionally, the positioning frame comprises a U-shaped structural member and a connecting rod connecting two ends of the U-shaped structural member, the U-shaped structural member comprises two straight sections, the transverse fixing member is rigidly connected to the lower straight section, and the wrist arm structure is rigidly connected to the connecting rod.

[0018] Optionally, the top of the positioning frame is provided with a load cable seat.

[0019] The beneficial effects of the present application are that the electrified railway catenary suspension structure provided by the present application can prolong the overall structure, can make the positioning structure span the track with a shorter length, can fully utilize the overall bearing capacity of the wrist arm structure, the transverse fixing member fixed at the bottom of the positioning frame can connect the straight connectors of one positioning structure in the left and right directions respectively, the straight connectors can be adjusted in length through the positioning holes I, the positioner can meet the needs of different electrified railways, and thus the present catenary suspension structure only needs to be arranged on one side of the track, only needs to be installed on the stand on this side, and can install the catenary to supply power to electric locomotives or trains, thereby reducing the number of parts, reducing the installation and maintenance workload, reducing the risk points, improving the overall safety, and saving materials. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The structure schematic view of the catenary suspension structure provided by the embodiment of the present application is shown in the figure.

[0021] Figure 2 The optional structure schematic view of the catenary suspension structure provided by the embodiment of the present application is shown in the figure.

[0022] Figure 3 The optional structure schematic view of the catenary suspension structure provided by the embodiment of the present application is shown in the figure.

[0023] In the figure: 10, the wrist arm structure; 11, the flat wrist arm; 12, the inclined wrist arm; 13, the double ear sleeve; 14, the single ear sleeve; 20, the positioning frame; 21, the U-shaped structural member; 211, the straight section; 22, the connecting rod; 23, the force bearing cable seat; 24, the inclined rod; 30, the transverse fixing piece; 31, the positioning hole one; 40, the positioning structure; 41, the straight connecting piece; 42, the vertical connecting piece; 43, the positioner; 44, the clamp one; 45, the clamp two; 50, the column. DETAILED DESCRIPTION

[0024] As Figures 1-3 shown in the figure, the electric railway catenary suspension structure provided by the embodiment of the present application comprises a wrist arm structure 10, a positioning frame 20 rigidly connected to one end of the wrist arm structure 10, a transverse fixing piece 30 rigidly connected to the bottom of the positioning frame 20, and a positioning structure 40, wherein the transverse fixing piece 30 is provided with a plurality of linearly distributed positioning holes one 31; the positioning structure 40 comprises a straight connecting piece 41 arranged on the transverse fixing piece 30, a vertical connecting piece 42 arranged on the straight connecting piece 41, and a positioner 43 arranged on the vertical connecting piece 42, wherein the straight connecting piece 41 is provided with at least one positioning hole two, and the positioning hole two is a through hole or a threaded hole; and the transverse fixing piece 30 and the straight connecting piece 41 are fastened by a screw or a bolt penetrating through the positioning hole one 31 and the positioning hole two.

[0025] Compared with the prior art, the electric railway catenary suspension structure provided by the present application can extend the overall structure, can make the positioning structure 40 span the track with a shorter length, and can fully utilize the overall bearing capacity of the wrist arm structure 10. The transverse fixing piece 30 fixed at the bottom of the positioning frame 20 can be connected to the straight connecting piece 41 of one positioning structure 40 in each of the left and right directions, and the straight connecting piece 41 can adjust the length of the extension through the positioning hole one 31, so that the positioner 43 can meet the needs of different electrified railways. Therefore, only one column 50 needs to be arranged on one side of the track when the catenary suspension structure is used, and the catenary suspension structure needs to be installed on the column 50 on this side, so that the catenary can be installed to supply power to electric locomotives or trains, thereby reducing the number of parts, reducing the installation and maintenance workload, reducing the risk points, improving the overall safety, and saving materials.

[0026] It should be noted that Figure 1 the dashed line in the figure is the center line of the track.

[0027] In the embodiment, the straight connecting piece 41 is provided with a plurality of linearly distributed positioning holes two, and the spacing between adjacent positioning holes two is consistent with the spacing between adjacent positioning holes one 31.

[0028] Specifically, the flat connecting piece 41 is a straight pipe or a solid round rod, and the transverse fixing piece 30 is a straight pipe. When the flat connecting piece 41 is a straight pipe, the outer diameter of the flat connecting piece 41 is smaller than the inner diameter of the transverse fixing piece 30. The flat connecting piece 41 can be inserted into the transverse fixing piece 30 first, and then the positioning hole two can be aligned with the positioning hole one 31 according to the specific adjustment as needed, which can improve the installation convenience. Then the transverse fixing piece 30 and the flat connecting piece 41 are fastened by bolts and nuts. When the flat connecting piece 41 is a solid round rod, the positioning hole two is a round hole, and the transverse fixing piece 30 and the flat connecting piece 41 are fastened by bolts and nuts. When the positioning hole two is a screw hole, the transverse fixing piece 30 and the flat connecting piece 41 can be fastened by bolts and nuts or screws, which increases the selectivity of the connection mode. The multiple positioning hole two and the multiple positioning hole one 31 can set 2 or more connection points, which increases the stability of the connection between the transverse fixing piece 30 and the flat connecting piece 41.

[0029] Further, the transverse fixing piece 30 can be a round pipe or a square pipe, and the flat connecting piece 41 is a round pipe or a square pipe. In some embodiments, the transverse fixing piece 30 can also be a long flat plate, and the flat connecting piece 41 is a long flat plate.

[0030] In this embodiment, the end of the vertical connecting piece 42 is rigidly connected with a clamp one 44, and the vertical connecting piece 42 is sleeved on the flat connecting piece 41 through the clamp one 44.

[0031] Specifically, the vertical connecting piece 42 is a round pipe, and the clamp one 44 is fixed at the end of the vertical connecting piece 42. The position of the vertical connecting piece 42 connected to the flat connecting piece 41 in the horizontal direction can be adjusted through the clamp one 44, so that the distance of the positioner 43 relative to the horizontal direction of the rail can be adjusted, which improves the adaptability of the catenary suspension structure.

[0032] In this embodiment, the end of the positioner 43 is provided with a clamp two 45, and the positioner 43 is sleeved on the vertical connecting piece 42 through the clamp two 45.

[0033] Specifically, the clamp two 45 is fixed at the end of the positioner 43. The position of the positioner 43 connected to the vertical connecting piece 42 in the vertical direction can be adjusted through the clamp two 45, so that the height of the contact line can be ensured, which improves the adaptability of the catenary suspension structure.

[0034] In this embodiment, the wrist arm structure 10 includes at least one flat wrist arm 11 and an inclined wrist arm 12 hinged to the stand column 50. One end of the inclined wrist arm 12 is hinged to the positioning frame 20, and the other end is hinged to the stand column 50 or the flat wrist arm 11. The inclined wrist arm 12 is a tension rod.

[0035] Specifically, the flat wrist arm 11 and the inclined wrist arm 12 are both made of glass fiber reinforced composite material, and the structure of both is preferably a round pipe. Please refer to Figure 3When the arm mainly consists of a horizontal arm 11 and an inclined arm 12, the horizontal arm 11 is located below the inclined arm 12, both ends of the horizontal arm 11 are fixedly connected with a single ear sleeve 14 and a round sleeve through fasteners such as bolts, the horizontal arm 11 is fixedly connected on the connecting rod 22 of the positioning frame 20 and the vertical column 50 through the single ear sleeve 14 and the round sleeve at both ends through fasteners such as bolts, the round sleeve is fixed on the connecting rod 22 in advance, both ends of the inclined arm 12 are fixedly connected with a single ear sleeve 14 through fasteners such as bolts, the inclined arm 12 is fixedly connected on the connecting rod 22 of the positioning frame 20 and the vertical column 50 through the single ear sleeve 14 at both ends through fasteners such as bolts, in this way, the horizontal arm 11 is a compression rod, the inclined arm 12 is a tension rod, the load capacity of the horizontal arm 11 and the inclined arm 12 can be fully utilized, which is conducive to ensuring the stability and reliability of the structure with lower weight of the arm structure 10, and meanwhile, the number of parts of the arm structure 10 is reduced.

[0036] In addition, the horizontal arm 11 is located below the inclined arm 12, which can avoid the positioning structure 40 from touching the horizontal arm 11 when adjusting left and right, thereby ensuring the adjustment range of the positioning structure 40, and more importantly, the damage of the arm structure 10 caused by the collision between the positioner 43 and the arm structure 10 can be avoided.

[0037] In addition, the horizontal arm 11 and the inclined arm 12 are insulated, the insulator can be cancelled, the overall weight is reduced, and the surface is provided with an insulating, anti-fouling, water-repellent and weather-resistant coating to realize the long-term insulation function.

[0038] The arm structure 10 consists of 2 to 3 glass fiber epoxy resin composite rods (or pipes), the positioning frame 20 is welded by steel or aluminum alloy rods (or pipes), the arm structure 10 and the positioning frame 20 are connected through metal connecting heads and fasteners, and the whole presents a rectangular shape. The present application fully utilizes the performance advantages of composite materials and metals, reduces the number of parts of the traditional arm support device, reduces the installation and maintenance workload, reduces the risk points, improves the operation efficiency and the safety and reliability of the overhead contact line, and provides an arm support device with moderate weight of a single part, which is convenient for production and manufacturing, quality control and size adjustment of the arm support structure, and reduces the production and operation cost. Moreover, the present application realizes the universality of the positive and negative positioning parts of the contact line, and improves the production, management and installation efficiency of the arm support device.

[0039] In one embodiment, please refer to Figure 2When the arm mainly consists of two horizontal arms 11 and an inclined arm 12, the two horizontal arms 11 are arranged in parallel, and the inclined arm 12 is arranged between the two horizontal arms 11, and one end of the horizontal arm 11 is hingedly connected to the horizontal arm 11 above. Specifically, the two ends of the horizontal arm 11 above are fixedly connected to the double-ear sleeve 13 and the round sleeve by fasteners such as bolts, respectively, and the horizontal arm 11 is fixedly connected to the connecting rod 22 of the positioning frame 20 and the stand column 50 by the double-ear sleeve 13 and the round sleeve at the two ends through fasteners such as bolts, respectively, and the round sleeve is fixed to the connecting rod 22 in advance, and the two ends of the horizontal arm 11 below are fixedly connected to the single-ear sleeve 14 and the round sleeve by fasteners such as bolts, respectively, and the horizontal arm 11 is fixedly connected to the connecting rod 22 of the positioning frame 20 and the stand column 50 by the single-ear sleeve 14 and the round sleeve at the two ends through fasteners such as bolts, respectively, and the two ends of the inclined arm 12 are fixedly connected to the single-ear sleeve 14, and the inclined arm 12 is fixedly connected to the connecting rod 22 of the positioning frame 20 and the double-ear sleeve 13 by the single-ear sleeve 14 at the two ends through fasteners such as bolts, respectively, in this way, the horizontal arm 11 below is a compression rod, and the horizontal arm 11 above and the inclined arm 12 are tension rods, and the load capacity of the horizontal arm 11 and the inclined arm 12 can be fully utilized.

[0040] In the embodiment, the positioning frame 20 includes a U-shaped structural member 21 and a connecting rod 22 connecting the two ends of the U-shaped structural member 21, the U-shaped structural member 21 includes two straight sections 211, and the horizontal fixing member 30 is rigidly connected to the straight section 211 below, and the arm structure 10 is rigidly connected to the connecting rod 22.

[0041] Specifically, the U-shaped structural member 21 is bent from a pipe, and is fixedly connected to the connecting rod 22 through a round sleeve, without welding, and has fewer components, and has stronger load capacity, compared to the general positioning frame 20 structure, has fewer components, and is easy to manufacture and install.

[0042] Of course, the positioning frame 20 can also be composed of two straight pipes arranged in parallel above and below, the connecting rod 22 and the inclined rod 24, the two ends of the connecting rod 22 and the inclined rod 24 are welded to the two straight pipes, respectively, and the straight pipe below can replace the horizontal fixing member 30, in this way, although the components of the positioning frame 20 are increased, but no additional components for installing the positioning structure 40 are required.

[0043] In the embodiment, the top of the positioning frame 20 is provided with a load cable seat 23, specifically, the load cable seat 23 is fixedly installed on the top of the U-shaped structural member 21 or the straight pipe above of the positioning frame 20 through a clamp or a bolt.

[0044] Those skilled in the art should understand that the above discussion of any embodiment is only intended to be illustrative and is not intended to be limiting to the scope of the present application; the above embodiments or technical features among different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes such as the different aspects of one or more embodiments of the present application as described above, which are not provided in details for the sake of brevity.

[0045] One or more embodiments of the present application are intended to cover all such alternatives, modifications, and variations as fall within the broad scope of the present application. Accordingly, any one of the above-cited examples, or any other unrecited example, can be prepared by any method and materials equivalent to those described above, without departing from the spirit and scope of one or more embodiments of the present application.

Claims

1. A contact wire suspension structure for electrified railways, characterized in that, include: Carpal structure (10); A positioning frame (20) is rigidly connected to one end of the carpal structure (10). A horizontal fixing member (30) rigidly connected to the bottom of the positioning frame (20), the horizontal fixing member (30) having a plurality of positioning holes (31) arranged in a straight line; and The positioning structure (40) includes a straight connector (41) on the horizontal fixing member (30), a vertical connector (42) on the straight connector (41), and a locator (43) on the vertical connector (42). The straight connector (41) has at least one second positioning hole, which is a through hole or a screw hole. The horizontal fixing member (30) and the straight connector (41) are fastened by screws or bolts that pass through the first positioning hole (31) and the second positioning hole. The end of the vertical connector (42) is rigidly connected with a clamp (44), and the vertical connector (42) is sleeved on the straight connector (41) through the clamp (44). The end of the locator (43) is provided with a clamp (45), and the locator (43) is sleeved on the vertical connector (42) through the clamp (45). The bottom of the positioning frame (20) is fixed with a horizontal fixing member (30), and a straight connector (41) of a positioning structure (40) is connected in the left and right directions respectively.

2. The overhead contact line suspension structure for electrified railways according to claim 1, characterized in that, The straight connector (41) has multiple positioning holes 2 arranged in a straight line, and the spacing between adjacent positioning holes 2 is the same as the spacing between adjacent positioning holes 1 (31).

3. The overhead contact line suspension structure for electrified railways according to claim 1, characterized in that, The transverse fixing member (30) is a straight pipe, and the straight connecting member (41) is sleeved on the transverse fixing member (30).

4. The electrified railway contact wire suspension structure according to claim 3, characterized in that, The straight connector (41) is a straight tube or a solid round rod.

5. The electrified railway contact wire suspension structure according to any one of claims 1-4, characterized in that, The wrist arm structure (10) includes at least one flat wrist arm (11) and a slanted wrist arm (12) hinged to the column (50). One end of the slanted wrist arm (12) is hinged to the positioning frame (20), and the other end is hinged to the column (50) or the flat wrist arm (11). The slanted wrist arm (12) is a tension rod.

6. The electrified railway contact wire suspension structure according to claim 5, characterized in that, The two flat wrist arms (11) are distributed in parallel, and the oblique wrist arm (12) is located between the two flat wrist arms (11). One end of the oblique wrist arm (12) is hinged to the flat wrist arm (11) located above.

7. The electrified railway contact wire suspension structure according to any one of claims 1-4, characterized in that, The positioning frame (20) includes a U-shaped structural member (21) and a connecting rod (22) connecting the two ends of the U-shaped structural member (21). The U-shaped structural member (21) includes two straight sections (211). The transverse fixing member (30) is rigidly connected to the lower straight section (211). The wrist arm structure (10) is rigidly connected to the connecting rod (22).

8. The electrified railway contact wire suspension structure according to any one of claims 1-4, characterized in that, The top of the positioning frame (20) is provided with a load-bearing cable seat (23).

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