Hanging shoulder frame for railway overhead line system
By designing adjustment and support components for the railway contact wire suspension shoulder, the problem of unstable contact caused by loose contact wire was solved, enabling flexible adjustment and stable support of the contact wire, thus ensuring the stability and safety of power transmission.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI CONGAN ELECTRIC POWER EQUIPMENT CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-05-08
AI Technical Summary
The existing railway catenary suspension shoulders are prone to loosening due to vibration, aging, and construction reasons, resulting in unstable contact between the contact wire and the pantograph plate, which poses a safety hazard, especially in severe weather conditions where temporary disconnection and arc discharge are likely to occur.
A suspension shoulder frame was designed, comprising a mounting column, a support frame, a catenary, a contact wire, an adjustment assembly, and a support assembly. The adjustment assembly enables lateral and vertical adjustment of the contact wire, and dampers and springs provide buffer support to ensure stable support of the contact wire under various working conditions.
It enables flexible adjustment and stable support of the contact wire position, reduces vibration, ensures stable contact between the contact wire and the pantograph in severe weather, avoids temporary disconnection, and guarantees the stability and safety of power transmission.
Smart Images
Figure CN224210932U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of suspension shoulder frame technology, and in particular to a suspension shoulder frame for railway catenary. Background Technology
[0002] In railway overhead contact systems, the upper and lower cables connected by the suspension shoulder are the catenary and the contact wire, respectively. They play a crucial role in the core mechanical support and power transmission functions of electrified railway systems. The contact wire is the "artery" of power transmission. It is fixed below the catenary by a dropper to form a chain suspension structure. This design allows the contact wire to maintain a uniform height within the span, reducing sag (i.e., the drooping of the conductor due to gravity) and ensuring smooth current collection by the pantograph. When the contact wire slides into contact with the pantograph slide plate, it needs to maintain stable contact.
[0003] In existing technologies, due to vibration, aging, construction methods, and other reasons, varying degrees of loosening may occur. Once the existing single-shoulder suspension frame for the overhead contact line is installed, it is impossible to make horizontal and vertical fine adjustments to the contact wire, which poses a significant safety hazard. At the same time, the pantograph and the overhead contact line are set up based on their own weight, making it difficult to guarantee downward pressure. In severe weather such as strong winds, vibrations can easily occur, leading to temporary separation and arc discharge, making it difficult to guarantee the contact effect with the pantograph sliding plate. Therefore, it is necessary to propose a suspension shoulder frame for railway overhead contact lines to solve the above problems. Utility Model Content
[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a suspension shoulder for railway contact networks.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A suspension shoulder for railway catenary includes a mounting column, a support frame fixedly sleeved on the outside of the mounting column, a load-bearing cable connected to the outside of the support frame via a clamp-type connector, and a contact wire disposed at the bottom of the load-bearing cable. The suspension shoulder also includes an adjustment assembly disposed on the outer wall of the support frame for adjusting the position of the contact wire. The adjustment assembly includes a first connector fixedly sleeved on the outer wall of the support frame, a first connecting pipe hinged inside the first connector, and a telescopic plate movably sleeved inside the first connecting pipe. The telescopic plate can move along the first connecting pipe. The telescopic plate slides axially. A connecting sleeve is bolted to the bottom of the telescopic plate. The connecting sleeve and the telescopic plate cooperate to clamp and fix the contact wire. A fixing sleeve is fixedly installed on one side of the first connecting tube. A telescopic column is movably sleeved on the inner circular wall of the fixing sleeve. The telescopic column can slide axially along the fixing sleeve. A first spring is movably sleeved on the outer circular wall of the telescopic column. Fixing holes and several fixing slots are respectively opened on one side of the first connecting tube and one side of the telescopic plate. The telescopic column is movably sleeved with the fixing holes and fixing slots. A support assembly is provided to buffer and support the contact wire.
[0007] As a further embodiment of this utility model, the support assembly includes: a second connector, which is fixedly sleeved on the outer wall of the support frame by bolts; a telescopic shaft is hinged inside the second connector; a second connecting pipe is hinged to the top surface of the first connecting pipe; a damper is fixedly installed at the bottom inside the second connecting pipe; a second spring is movably sleeved on the outer circular wall of the telescopic shaft of the damper; and the second spring is movably sleeved on the inner circular wall of the telescopic shaft.
[0008] As a further embodiment of this utility model, a plurality of suspension wires are connected between the load-bearing cable and the contact wire, and the suspension wires are arranged at equal intervals along the length of the contact wire.
[0009] As a further embodiment of this utility model, two limiting holes are provided on the outer circular wall surface of the second connecting pipe, and the limiting holes are movably connected to the telescopic shaft.
[0010] As a further embodiment of this utility model, the telescopic column, the first spring, and the fixing sleeve are all made of 316L stainless steel.
[0011] As a further embodiment of this utility model, the outer walls of the connecting sleeve and the telescopic plate gradually contract inward toward the ends.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] By using the installation columns, support frames, catenary cables, contact wires, droppers, first connectors, and first connecting pipes in coordination, the position of the contact wire can be flexibly adjusted and stably supported under various working conditions. After installation and use, the height or lateral position of the contact wire can be adjusted again to make it conform to the installation standards, such as making the contact wire run in a zigzag pattern. At the same time, the contact wire can be damped vertically and horizontally in severe weather such as strong winds to reduce vibration and prevent the contact wire from temporarily separating from the pantograph plate, thus ensuring the contact effect. It is quite practical. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of a suspension shoulder frame for railway catenary proposed in this utility model;
[0015] Figure 2 This is a schematic diagram of the mounting column structure of a suspension shoulder frame for railway catenary proposed in this utility model;
[0016] Figure 3 This is a schematic diagram of the support frame structure for a suspension shoulder frame for railway catenary proposed in this utility model;
[0017] Figure 4 for Figure 2 A partial structural diagram of A in the middle;
[0018] Figure 5 for Figure 3 A schematic diagram of the partial structure of B in the diagram;
[0019] Figure 6 This is a schematic diagram of the fixing sleeve structure of a suspension shoulder frame for railway catenary proposed in this utility model.
[0020] In the diagram: 1. Mounting column; 2. Support frame; 3. Load-bearing cable; 4. Contact wire; 5. Dropper; 6. First connector; 7. First connecting pipe; 8. Telescopic plate; 9. Connecting sleeve; 10. Telescopic column; 11. Fixing sleeve; 12. First spring; 13. Fixing hole; 14. Fixing groove; 15. Second connector; 16. Second connecting pipe; 17. Telescopic shaft; 18. Damper; 19. Second spring; 20. Limiting hole. Detailed Implementation
[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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 a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0024] Reference Figures 1-6 A suspension shoulder for railway catenary includes a mounting column 1, a support frame 2 fixedly sleeved on the outside of the mounting column 1, and a load-bearing cable 3 connected to the outside of the support frame 2 via a clamp-type connector. The clamp-type connector is a bolt-fixed clamp, including a U-bolt and a pressure plate. The pressure plate is fastened to the support frame 2 via the U-bolt. A contact wire 4 is provided at the bottom of the load-bearing cable 3. The system also includes an adjustment assembly, which is disposed on the outer wall of the support frame 2 and is used to adjust the position of the contact wire 4. The adjustment assembly includes a first connector 6, which is fixedly sleeved on the outer wall of the support frame 2. A first connecting pipe 7 is hinged inside the first connector 6, and a telescopic plate 8 is movably sleeved inside the first connecting pipe 7. The telescopic plate 8 can move along the first connecting pipe 7. The axial sliding mechanism includes a connecting sleeve 9 bolted to the bottom of the telescopic plate 8. The connecting sleeve 9 and the telescopic plate 8 work together to clamp and fix the contact line 4. A fixing sleeve 11 is fixedly installed on one side of the first connecting pipe 7. A telescopic column 10 is movably sleeved on the inner circular wall of the fixing sleeve 11. The telescopic column 10 can slide axially along the fixing sleeve 11. A first spring 12 is movably sleeved on the outer circular wall of the telescopic column 10. Fixing holes 13 and seven fixing slots 14 are respectively opened on one side of the first connecting pipe 7 and one side of the telescopic plate 8. The seven fixing slots 14 are evenly distributed along the axial direction of the telescopic plate 8, and the distance between adjacent fixing slots 14 is 10mm. The telescopic column 10 is movably sleeved with the fixing holes 13 and fixing slots 14. A support assembly is provided to buffer and support the contact line 4.
[0025] In this embodiment, the support assembly includes: a second connector 15, which is bolted to the outer wall of the support frame 2; a telescopic shaft 17 is hinged inside the second connector 15; a second connecting pipe 16 is hinged to the top surface of the first connecting pipe 7; the first connecting pipe 7 and the second connecting pipe 16 are connected by a glass fiber reinforced plastic hinge shaft; a damper 18 is fixedly installed at the bottom inside the second connecting pipe 16; a second spring 19 is movably sleeved on the outer circular wall of the telescopic shaft of the damper 18; the damper 18 and the second spring 19 are coaxially arranged; the gap between the telescopic shaft of the damper 18 and the inner hole of the second spring 19 is 0.5 mm; the damper 18 is a polyurethane elastic damper, including a porous honeycomb damping core and a glass fiber reinforced plastic shell; the Shore hardness of the damping core is A70; the damping force increases non-linearly with the deformation during the compression stroke; and the second spring 19 is movably sleeved on the telescopic shaft. On the inner circular wall of the first connecting pipe 17, several suspension wires 5 are connected between the load-bearing cable 3 and the contact line 4. The suspension wires 5 are arranged at equal intervals along the length of the contact line 4. Two limiting holes 20 are opened on the outer circular wall of the second connecting pipe 16. The limiting holes 20 are movably connected to the telescopic shaft 17. The telescopic shaft 17, the second connecting pipe 16 and the first connecting pipe 7 are made of glass fiber reinforced plastic. The breakdown voltage of the glass fiber reinforced plastic is ≥25kV / mm, the power frequency withstand voltage is ≥75kV when the thickness is 3mm, the tensile strength is ≥250MPa, it can withstand temperature cycling from -40℃ to 120℃, and the surface resistivity is ≥10^14Ω・cm. The telescopic column 10, the first spring 12 and the fixing sleeve 11 are all made of 316L stainless steel. The tensile strength of 316L stainless steel is ≥520MPa. It has no rust spots after 1000 hours of salt spray corrosion test. The outer walls of the connecting sleeve 9 and the telescopic plate 8 gradually shrink inward towards the end.
[0026] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:
[0027] By using the mounting post 1, when the user is installing and supporting the catenary cable 3 and the contact wire 4, if it is necessary to adjust the height and lateral position of the contact wire 4, an electric wrench is used to loosen the mounting bolts of the second connecting member 15. The second connecting member 15 is a pipe clamp or clamp available on the market, with a hinged foot on the outside, allowing the second connecting member 15 to slide up and down on the outer wall of the support frame 2. Pulling the telescopic shaft 17, the second connecting pipe 16, and the first connecting pipe 7 to rotate causes the telescopic plate 8, the connecting sleeve 9, and the contact wire 4 to move up or down, thereby adjusting the height of the contact wire 4. At the same time, pulling the telescopic post 10 compresses the first spring 12, causing the telescopic post 10 to move out of the fixed groove 14, which allows the telescopic plate 8 to be pushed and pulled laterally, so that... The telescopic movement inside the first connecting pipe 7 causes the connecting sleeve 9 to adjust the lateral position of the contact wire 4. After adjustment, the telescopic column 10 is released and inserted into the fixing groove 14, so that the telescopic plate 8 and the first connecting pipe 7 are connected as one unit, thereby completing the position adjustment of the contact wire 4 and making the contact wire 4 meet the installation requirements. The telescopic shaft 17, the second connecting pipe 16 and the first connecting pipe 7 are made of glass fiber reinforced plastic, with a breakdown voltage of 15-30kV / mm. When the thickness is ≥2mm, it can withstand 25kV high voltage. It is completely non-conductive, with a tensile strength of 200-300MPa. It can withstand temperature cycling from -40℃ to 120℃, resists ultraviolet aging, and is suitable for outdoor high-voltage environments. At the same time, it provides insulation protection for internal components such as the damper 18.
[0028] When the train pantograph contacts the contact wire 4 and moves at high speed, the damper 18, in conjunction with the second spring 19, buffers the upward force of the first connecting pipe 7, the telescopic plate 8, and the connecting sleeve 9, while simultaneously suppressing the swaying of the contact wire 4. The damper 18 provides initial buffering force, and the second spring 19 provides nonlinear damping at the end of its stroke. Together, they achieve multi-stage buffering of the contact wire 4. Under simulated wind speed conditions, the vertical amplitude of the contact wire 4 is significantly reduced. Furthermore, all metal components undergo thermal cycling tests, exhibiting minimal dimensional change, ensuring the stability of the contact wire 4 under severe weather conditions such as strong winds. The stable contact between the contact wire 4 and the pantograph allows for adjustment of the contact wire 4's position. After installation and use, the height or lateral position of the contact wire 4 can be adjusted again to meet installation standards, such as arranging it in a zigzag pattern. Simultaneously, in severe weather conditions such as strong winds, the contact wire 4 can be damped vertically to reduce vibration and prevent temporary detachment from the pantograph's sliding plate, ensuring effective contact. The use of fiberglass-reinforced plastic achieves a fully insulated structure, mitigating the conductivity risk of the damper 18 under high-voltage conditions, making it a highly practical solution.
[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A suspension shoulder frame for railway catenary, comprising a mounting column (1), a support frame (2) fixedly sleeved on the outside of the mounting column (1), a load-bearing cable (3) connected to the outside of the support frame (2) via a connector in the form of a clamp, and a contact wire (4) provided at the bottom of the load-bearing cable (3), characterized in that, Also includes: An adjustment assembly is disposed on the outer wall of the support frame (2) for adjusting the position of the contact line (4). The adjustment assembly includes: a first connector (6), which is fixedly sleeved on the outer wall of the support frame (2). A first connecting pipe (7) is hinged inside the first connector (6). A telescopic plate (8) is movably sleeved inside the first connecting pipe (7). The telescopic plate (8) can slide axially along the first connecting pipe (7). A connecting sleeve (9) is bolted to the bottom of the telescopic plate (8). The connecting sleeve (9) and the telescopic plate (8) are connected to each other. 8) To clamp and fix the contact wire (4), a fixing sleeve (11) is fixedly installed on one side of the first connecting pipe (7). A telescopic column (10) is movably sleeved on the inner circular wall of the fixing sleeve (11). The telescopic column (10) can slide along the axial direction of the fixing sleeve (11). A first spring (12) is movably sleeved on the outer circular wall of the telescopic column (10). A fixing hole (13) and several fixing grooves (14) are respectively opened on one side of the first connecting pipe (7) and one side of the telescopic plate (8). The telescopic column (10) is movably sleeved with the fixing hole (13) and the fixing groove (14). A support component is provided for buffering and supporting the contact line (4).
2. The suspension shoulder frame for railway catenary according to claim 1, characterized in that, The support assembly includes: a second connector (15), which is fixedly sleeved on the outer wall of the support frame (2) by bolts; a telescopic shaft (17) is hinged inside the second connector (15); a second connecting pipe (16) is hinged to the top surface of the first connecting pipe (7); a damper (18) is fixedly installed at the bottom inside the second connecting pipe (16); a second spring (19) is movably sleeved on the outer circular wall of the telescopic shaft of the damper (18); and the second spring (19) is movably sleeved on the inner circular wall of the telescopic shaft (17).
3. A suspension shoulder for railway catenary according to claim 1, characterized in that, A number of suspension wires (5) are connected between the load-bearing cable (3) and the contact line (4), and the suspension wires (5) are arranged at equal intervals along the length of the contact line (4).
4. A suspension shoulder for railway catenary according to claim 2, characterized in that, The outer circular wall of the second connecting pipe (16) has two limiting holes (20), which are movably connected to the telescopic shaft (17).
5. A suspension shoulder for railway catenary according to claim 1, characterized in that, The telescopic column (10), the first spring (12), and the fixing sleeve (11) are all made of 316L stainless steel.
6. A suspension shoulder for railway catenary according to claim 1, characterized in that, The outer walls of the connecting sleeve (9) and the telescopic plate (8) gradually contract inward toward the ends.