Wind-dance-resistant support for overhead line system

Abstract

The utility model belongs to the technical field of rail transit catenary wind-resisting, and particularly relates to a catenary wind-resisting support which can restrain a catenary from galloping under the action of wind excitation. The support comprises a support body and a positioning structure of the contact line, the support body comprises a main stand column, a flat cantilever, an inclined cantilever, an insulator and a positioning arm, the positioning structure of the contact line comprises a positioning connecting piece, a positioning rod and a positioning line clamp, the support further comprises a damping energy dissipation device, and the damping energy dissipation device is arranged between the positioning rod and the support body. The utility model has the advantages of simple structure, obviously improved system damping ratio, capability of greatly consuming the waving energy of the contact line, achieving the technical effect of effectively inhibiting the waving of the contact line, capability of effectively guaranteeing the use safety of the overhead line system, higher safety and reliability, longer service life and the like, does not increase the load of the contact line or the carrier cable, and is suitable for popularization and application. The method can be widely applied to overhead line system engineering of high-speed rails.

Description

Technical Field

[0001] The utility model belongs to the technical field of wind-resistant dance of rail transit contact network, and in particular relates to a wind-resistant dance bracket of a contact network for suppressing the dance of the contact network under the excitation of wind. Background Art

[0002] As the mileage of high-speed railway construction in my country continues to increase, the scale of supporting transmission lines is also expanding. The overhead contact network is a transmission line erected above the railway line to supply power to electric locomotives. It realizes the important function of transmitting the electric energy obtained from traction substation to high-speed locomotives. Its working state directly affects the actual transportation capacity of electrified railways. Due to the high flexibility of the conductors of the overhead contact network and the long transmission distance, it will dance (i.e. wind dance) under the action of external forces such as strong winds, especially in rain, snow and ice and rain weather, and the dynamic load will increase sharply, causing damage to the components of the overhead contact network system. In severe cases, it will cause unexpected situations such as power outages and line breaks, resulting in major economic losses or even catastrophic accidents.

[0003] In order to control the wind dance problem of the contact network, some technicians have designed an anti-dancing device to control the dancing of the contact network. The anti-dancing device is set in the suspension string between the catenary and the contact line. It is specifically a damping structure including a high-dissipation viscoelastic rod, which consumes the swing energy of the contact line and suppresses the swing amplitude when the strong wind causes the contact line to prevent dancing, thereby achieving the technical effect of controlling wind dance. However, it is found in practice that when strong winds act, the catenary, suspension string and contact line often swing together, and there is no obvious relative displacement between the catenary and the contact line. Therefore, the effect of damping energy consumption is limited, and the effect of controlling wind dance is not good.

[0004] In summary, the market urgently needs to provide a better contact network anti-wind dance device. Utility Model Content

[0005] The utility model aims to overcome the above-mentioned defects and provide a contact network anti-wind dance support with simple structure and good anti-wind dance effect.

[0006] The utility model relates to a contact network wind dance resistant support, which is realized in this way and comprises a support body and a contact line positioning structure, wherein the support body comprises a main column, a flat wrist arm, an inclined wrist arm, an insulator, a positioning arm and a support, and the contact line positioning structure comprises a positioning connector, a positioning rod and a positioning wire clamp, and further comprises a damping energy dissipation device, which is arranged between the positioning rod and the support body.

[0007] In the utility model, the contact line positioning structure may further include a swing rod, the lower end of the swing rod is connected to the positioning wire clamp, the upper end of the swing rod is connected to the damping energy dissipation device, and the middle part of the swing rod is hingedly connected to the positioning rod.

[0008] The damping energy dissipation device can be assembled in various ways. Preferably, the damping energy dissipation device is hingedly connected to the positioning rod or / and the damping energy dissipation device is hingedly connected to the bracket body; in addition, during specific installation, the damping energy dissipation device is arranged between the positioning arm and the positioning rod, or / and between the positioning rod and the oblique wrist arm, or / and between the positioning rod and the flat wrist arm.

[0009] The specific form of the damping energy dissipation device can be varied. For example, the damping energy dissipation device is a viscous damper. As a typical solution, the viscous damper includes a damping cylinder, a piston body and a gel-like solid damper. The gel-like solid damper is arranged in the damping cylinder, and the piston body is partially embedded in the gel-like solid damper. Alternatively, the viscous damper includes a damping cylinder, a piston body and a viscous liquid damper. The viscous liquid damper is arranged in the damping cylinder, and the piston body is partially immersed in the viscous liquid damper. For another example, the damping energy dissipation device can also use a viscoelastic damper. Typically, the viscoelastic damping material used can be an elastic rubber damping material or an elastic polyurethane damping material.

[0010] In addition to the damping energy dissipation device, the utility model contact network anti-wind dance support may also include a steel spring, which is arranged in parallel or works in parallel with the damping energy dissipation device. Of course, the arrangement of the steel spring can also be varied, for example, the steel spring is connected to work in parallel with the damping energy dissipation device through a rocker. Preferably, the damping energy dissipation device and / or the steel spring are arranged at an angle of 30-60° to the rocker. In addition, in order to prevent rainwater and other debris from entering the damping energy dissipation device, the damping energy dissipation device also includes a protective cover when necessary.

[0011] The utility model discloses a contact network wind-dance-resistant bracket, which increases the energy consumption capacity and damping ratio of the contact network system without increasing the load on the contact line or the load-bearing cable by adding a damping energy-absorbing device between the positioning rod and the bracket body. When the contact line dances under the disturbance of external forces such as wind, it will drive the positioning rod to swing relative to the bracket body. At this time, the damping energy-absorbing device works to consume and absorb the swing energy of the positioning rod, thereby consuming and absorbing the dancing energy of the contact line system, thereby reducing the dancing reaction of the contact line and the dancing amplitude of the contact line, which is beneficial to improving the disaster resistance and service life of the contact line and even the entire contact network system, avoiding major economic losses or even catastrophic accidents, and ensuring the operation safety and punctuality of rail vehicles.

[0012] To sum up, the utility model relates to the contact network wind-dance resistant support, which has a simple structure and significantly improves the system damping ratio. It can greatly consume the dancing energy of the contact line, achieve the technical effect of effectively suppressing the dancing of the contact line, and can effectively ensure the safe use of the contact network. It has the advantages of being safer and more reliable, and having a longer service life. It does not increase the load on the contact line or the load-bearing cable, and can be widely used in the contact network projects of high-speed railway lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is one of the structural schematic diagrams of the contact network wind dance resistance bracket of the utility model.

[0014] Figure 2 This is the second structural schematic diagram of the contact network wind dance resistance bracket of the utility model.

[0015] Figure 3 This is the third structural schematic diagram of the contact network wind dance resistance bracket of the utility model.

[0016] Figure 4 This is the fourth structural schematic diagram of the contact network wind dance resistance bracket of the utility model.

[0017] Figure 5 This is the fifth structural schematic diagram of the contact network wind dance resistance bracket of the utility model.

[0018] Figure 6 This is the sixth structural schematic diagram of the contact network wind dance resistance bracket of the utility model.

[0019] Figure 7 This is the seventh structural schematic diagram of the contact network wind dance resistance bracket of the utility model.

[0020] Figure 8 This is the eighth structural schematic diagram of the contact network wind dance resistance bracket of the utility model.

[0021] In the figure: 1. main column; 2. flat wrist arm; 3. oblique wrist arm; 4. insulated belt; 5. positioning arm; 6. connecting reinforcement; 7. positioning connecting piece; 8. positioning rod; 9. positioning wire clamp; 10. contact wire; 11. load-bearing cable; 12. damping energy dissipation device; 13. piston body; 14. damping cylinder; 15. damping material; 16. steel spring; 17. protective cover; 18. rocker arm. DETAILED DESCRIPTION

[0022] Embodiment 1

[0023] like Figure 1 The utility model shown in the figure is a contact network wind dance resistant support, including a support body and a contact line positioning structure, the support body includes a main column 1, a flat arm 2, an inclined arm 3, an insulator 4 and a positioning arm 5, the contact line positioning structure includes a positioning connector 7, a positioning rod 8 and a positioning wire clamp 9, and further includes a damping energy dissipation device 12, the damping energy dissipation device is specifically a small hole throttling damper, the small hole throttling damper is arranged between the positioning rod 8 and the support body, in this case specifically arranged between the positioning rod 8 and the positioning arm 5, wherein one end of the small hole throttling damper is fixedly connected to the positioning arm 5, and the other end is hingedly connected to the positioning rod 8; in addition, a connecting reinforcement 6 is provided between the positioning arm 5 and the inclined arm 3, and the connecting reinforcement 6 is specifically a steel wire rope.

[0024] When applied, such as Figure 1 As shown in , the contact wire 10 is fixedly connected to the positioning wire clamp 9, and the load-bearing cable 11 is fixedly arranged on the flat wrist arm 2 through a combined load-bearing cable seat. Compared with the prior art, the utility model of the contact network wind-resistant dance support increases the energy consumption capacity and damping ratio of the contact line dance system without increasing the load of the contact line or the load-bearing cable by adding a damping energy-absorbing device between the positioning rod and the support body. When the contact line dances under the disturbance of external forces such as wind, it will drive the positioning rod to swing relative to the support body. At this time, the damping energy-absorbing device works to consume and absorb the swing energy of the positioning rod, thereby consuming and absorbing the dance energy of the contact line system, thereby reducing the dance reaction of the contact line and reducing the dance amplitude of the contact line, which is beneficial to improving the disaster resistance and service life of the contact line and even the entire contact network system, avoiding major economic losses or even catastrophic accidents, and ensuring the operation safety and punctuality of rail vehicles.

[0025] To sum up, the utility model relates to the contact network wind-dance resistant support, which has a simple structure and significantly improves the system damping ratio. It can greatly consume the dancing energy of the contact line, achieve the technical effect of effectively suppressing the dancing of the contact line, and can effectively ensure the safe use of the contact network. It has the advantages of being safer, more reliable, and having a longer service life. It does not increase the load on the contact line or the load-bearing cable, and can be widely used in the contact network projects of high-speed railway lines.

[0026] It should be pointed out that in this example, the damping energy dissipation device is specifically a small-hole throttling damper. In actual applications, the damping energy dissipation device can also adopt other types of dampers such as eddy current dampers or viscous dampers; in addition, based on the technical principle of the utility model, the damping energy dissipation device can be arranged between the positioning rods and the positioning rods, or / and between the positioning rods and the inclined arm, or / and between the positioning rods and the flat arm. In theory, it can be arranged between the positioning rods and any fixed structure of the bracket body. As long as the strength is sufficient, it can meet the requirements of the utility model, and the damping energy dissipation device can be arranged between different parts of the bracket body and the positioning rods at the same time. These are simple changes based on the technical principle of the utility model. In practice, they can be selected according to engineering needs. They are only explained in text here, and no drawings are provided one by one. They are also within the protection scope required by the utility model.

[0027] Embodiment 2

[0028] like Figure 2 The contact network anti-wind dance support of the utility model shown in the figure is different from the embodiment 1 in that it also includes a steel spring 16, which is arranged in parallel with the damping energy dissipation device 12, and the two ends of the steel spring 16 are respectively hingedly connected to the positioning rod 8 and the positioning arm 5; in addition, connecting reinforcement members 6 are respectively arranged between the flat arm 2 and the inclined arm 3, and between the inclined arm 3 and the positioning arm 5, and the connecting reinforcement members 6 are specifically support rods.

[0029] Compared with the first embodiment, in the technical scheme described in this example, since a connecting reinforcement member 6 is added to the bracket body, the structural strength of the system is greater and it is safer and more reliable; in addition, since a steel spring 16 is added, when the contact line 10 dances and causes the positioning rod 8 to swing together, on the one hand, the damping energy dissipation device can be used to quickly consume the swinging energy of the positioning rod, and on the other hand, the steel spring 16 can be used to quickly reset the positioning rod, adjust the pressure on the pantograph, and buffer the vibration impact of the positioning rod, which is conducive to faster and better attenuation of the swinging energy of the positioning rod, and then effectively suppress the dancing reaction of the contact line, thereby greatly improving the adaptability of the contact network power supply system to harsh external environments, and further improving the safety and reliability of the system.

[0030] Embodiment 3

[0031] like Figure 3 The difference between the utility model contact network wind dance resistance support and the first embodiment is that a connecting reinforcement 6 is respectively provided between the flat arm 2 and the oblique arm 3 and between the oblique arm 3 and the positioning arm 5; furthermore, the damping energy dissipation device is a viscous damper, and the viscous damper includes a damping cylinder 14, a piston body 13 and a damping material 15, wherein the damping material 15 is specifically a viscous liquid damping, the damping material 15 is provided in the damping cylinder 14, and the piston body 13 is partially immersed in the damping material 15; in addition, The utility model catenary anti-wind dance support also includes a steel spring 16, which is arranged in the damping cylinder 14, wherein two steel springs 16 are arranged, and steel springs 16 are arranged on both sides of the piston head of the piston body 13, so that the steel springs can be used to achieve buffering and reset for both tension and compression, and the steel spring 16 and the viscous damper work in parallel; in addition, the damping energy dissipation device also includes a protective cover 17, which is fixedly connected to the piston body 13 as a whole and is covered on the upper part of the damping cylinder 14. In this example, the damping energy dissipation device is arranged between the positioning rod 8 and the flat arm 2, and both ends of the damping energy dissipation device are hinged to the positioning rod and the flat arm.

[0032] Compared with the first embodiment, in the technical solution described in this example, since a connection reinforcement member is added to the bracket body, the structural strength of the system is greater, safer and more reliable; and since a viscous damper is used in the damping energy dissipation device, compared with the small hole throttling damper described in the first embodiment, the viscous damper relies on the physical viscosity of the viscous liquid damping to provide damping, and does not rely on pressure to do work, so it does not require a strict, high-precision sealing structure, it is not sensitive to wear, has a long service life, and is more reliable; in addition, since a steel spring is added to the damping energy dissipation device, when the contact line 10 dances, the fixed When the positioning rod 8 swings together, the damping energy dissipation device can not only use the viscous damper to quickly consume the swinging energy of the positioning rod, but also use the steel spring to quickly reset the positioning rod, adjust the pressure on the pantograph, and buffer the vibration impact of the positioning rod, which is conducive to faster and better attenuation of the swinging energy of the positioning rod, thereby effectively suppressing the dancing reaction of the contact line, greatly improving the adaptability of the contact network power supply system to the harsh external environment, and making it safer and more reliable; in addition, due to the provision of a protective cover, it can effectively prevent rainwater and other debris from falling into the damping cylinder, and ensure the normal operation of the viscous damper. The comprehensive use of the above technical measures is conducive to greatly improving the service life of the contact network power supply system and ensuring the normal operation and safety of rail vehicles around the clock.

[0033] It should be noted that in this example, two coil steel springs are set in the damping cylinder and arranged on both sides of the piston head of the piston body. In actual application, the coil steel springs can also be set outside the damping cylinder, and the number of coil steel springs can be one, three or even more. It can be designed according to actual engineering needs. As long as it can provide appropriate buffering and can achieve similar technical effects, it can be applied to the utility model. Here, only textual description is given, and no drawings are provided one by one. They are all within the protection scope required by the utility model.

[0034] Embodiment 4

[0035] like Figure 4 The difference between the utility model contact network wind dance resistance support and the first embodiment is that a connecting reinforcement 6 is respectively provided between the flat arm 2 and the oblique arm 3 and between the oblique arm 3 and the positioning arm 5; in addition, the positioning structure of the contact line also includes a swing rod 18, the lower end of the swing rod 18 is connected to the positioning wire clamp 9, the upper end of the swing rod 18 is connected to the damping energy dissipation device, and the middle part of the swing rod 18 is hingedly connected to the positioning rod 8; in addition, the damping energy dissipation device 12 is specifically a viscoelastic damper, and the damping energy dissipation device is hingedly connected to the oblique arm 3 and the swing rod 18. Among them, the viscoelastic damper adopts elastic rubber damping material (not specifically shown in the figure), and the angle between the viscoelastic damper and the swing rod is about 45°.

[0036] Compared with the first embodiment, in the technical solution described in this example, since a connecting reinforcement is added to the bracket body, the structural strength of the system is greater and safer and more reliable; and since a viscoelastic damper is used in the damping energy dissipation device, compared with the small hole throttling damper described in the first embodiment, the viscoelastic damper relies on the physical properties of the viscoelastic damping material to provide damping and does not rely on pressure to do work. Therefore, it does not require a strict, high-precision sealing structure, is not sensitive to wear, and has no special restrictions on the use direction of the damping energy dissipation device. It has a long service life and higher reliability. In addition, since a rocker rod 18 is added, the damping energy dissipation device 12 can not only absorb the energy of the contact line 10 in the vertical dancing, but also absorb the energy of the contact line 10 in the horizontal dancing, and can achieve all-round energy dissipation. Therefore, the energy dissipation effect is stronger, which is conducive to further improving the ability of the utility model to control the dancing of the contact network.

[0037] Of course, based on the technical principles of this example, in addition to the elastic rubber damping material already mentioned, the viscoelastic damper in the utility model can also use other solid damping materials such as elastic polyurethane materials, and can also achieve similar technical effects; in addition, in addition to the already mentioned setting of the damping energy dissipation device between the rocker arm and the inclined wrist arm, the damping energy dissipation device can also be set between the positioning arm and the rocker arm or between the flat wrist arm and the rocker arm, and even the damping energy dissipation device can be set at at least two of the above places at the same time, which can also achieve a good technical effect. Here, only text is used for explanation, and no drawings are provided one by one. They are all within the protection scope required by the utility model.

[0038] Embodiment 5

[0039] like Figure 5 The utility model contact network anti-wind dance support shown in the figure is different from the third embodiment in that the contact line positioning structure also includes a rocker arm 18, the lower end of the rocker arm 18 is connected to the positioning wire clamp 9, the upper end of the rocker arm 18 is connected to the damping energy dissipation device, and the middle part of the rocker arm is hingedly connected to the positioning rod 8; in addition, in the viscous damper serving as the damping energy dissipation device, the damping cylinder 14, the piston body 13 and the damping material 15, the damping material 15 is a gel-like solid damping, the gel-like solid damping is arranged in the damping cylinder, the piston body is partially embedded in the gel-like solid damping, and the damping energy dissipation device is hingedly connected to the inclined arm 3 and the rocker arm 18 respectively.

[0040] Compared with the third embodiment, in the technical scheme described in this embodiment, since the rocker arm 18 is additionally provided, when the contact line 10 undergoes a small displacement, the piston body 13 can produce a large relative displacement in the damping cylinder 14, thereby significantly improving the damping output of the damping energy dissipation device and achieving a better energy dissipation and vibration reduction effect, thereby better suppressing the dancing reaction of the contact line and greatly improving the anti-wind dance capability of the contact network system; in addition, since the damping material 15 adopts a gel-like solid damping, the damping material will not leak, overflow, or be afraid of water, and will not flow and deform under conditions such as tilting, swinging, and deflection. The damping performance of the damping energy dissipation device always remains stable, and the reliability and adaptability are greatly improved. The protective cover can also be omitted, and the structure is simpler, which is conducive to reducing assembly processes and reducing costs.

[0041] Embodiment 6

[0042] like Figure 6 The difference between the utility model catenary wind dance resistance support and the fifth embodiment is that the damping energy dissipation device 12 is a viscous damper, and the two ends of the viscous damper are respectively hingedly connected to the flat arm 2 and the swing rod 18; the two ends of the steel spring 16 are respectively hingedly connected to the oblique arm 3 and the swing rod 18. The angle between the damping energy dissipation device 12 and the steel spring 16 and the swing rod 18 is about 30 degrees, and the steel spring 16 works in parallel with the damping energy dissipation device 12 through the swing rod 18.

[0043] Compared with the fifth embodiment, the technical solution of this embodiment directly sets the viscous damper (i.e., the damping energy dissipation device) and the steel spring in parallel independently, which is convenient for separate maintenance and adjustment during use. Of course, the arrangement of the damping energy dissipation device and the steel spring can also be varied, for example Figure 7 As shown in , the energy-dissipating damping device 12 and the steel spring 16 are both hingedly connected to the oblique arm 3 at one end and hingedly connected to the swing rod 18 at the other end; or as shown in Figure 8 As shown in the figure, the damping energy dissipation device 12 and the steel spring 16 are arranged in parallel, one end of the damping energy dissipation device 12 is hingedly connected to the positioning arm 5, and the other end is hingedly connected to the rocker arm 18, one end of the steel spring is hingedly connected to the inclined wrist arm 3, and the other end is hingedly connected to the rocker arm 18, wherein the angle between the steel spring 16 and the rocker arm 18 is approximately 40°, and the angle between the damping energy dissipation device 12 and the rocker arm 18 is approximately 60°, which can also achieve similar technical effects. These are simple changes based on the technical principles of the utility model and are all within the protection scope required by the utility model.

[0044] It should be pointed out that based on Figure 4-Figure 8The technical principle recorded in the technical scheme shown is that when the damping energy dissipation device or / and the steel spring are used in conjunction with the rocker arm for energy dissipation, preferably, the angle between the damping energy dissipation device or / and the steel spring and the rocker arm is controlled between 30-60°, which is conducive to ensuring that the damping energy dissipation device or / and the spring can play a good role in both vertical and lateral (horizontal) directions to prevent jamming.

[0045] In summary, the utility model of the contact network wind dance resistance support has a simple structure and significantly improved system damping ratio. It can greatly consume the dancing energy of the contact line, achieve the technical effect of effectively suppressing the dancing of the contact line, and can effectively ensure the safety of the use of the contact network. It has the advantages of being safer and more reliable, and having a longer service life, and does not increase the load on the contact line or the load-bearing cable, and can be widely used in the contact network engineering of high-speed railway lines. The embodiments in the utility model are only to better illustrate the technical scheme of the utility model, and should not be regarded as limiting the utility model. The technical features in many of the embodiments can also be used interchangeably. Based on the technical principles of the utility model, those skilled in the art can re-combine the technical schemes described in the above embodiments or use similar technologies to simply replace some of the components therein. As long as they are based on the technical principles of the utility model, they are all within the protection scope required by the utility model.

Claims

1. A contact network anti-wind dance support, comprising a support body and a contact line positioning structure, wherein the support body comprises a main column, a flat wrist arm, an inclined wrist arm, an insulator and a positioning arm, and the contact line positioning structure comprises a positioning connector, a positioning rod and a positioning wire clamp, characterized in that It also includes a damping energy dissipation device, which is arranged between the positioning rod and the bracket body.

2. The contact network anti-wind dance support according to claim 1 is characterized in that The contact line positioning structure also includes a swing rod, the lower end of the swing rod is connected to the positioning wire clamp, the upper end of the swing rod is connected to the damping energy dissipation device, and the middle part of the swing rod is hingedly connected to the positioning rod.

3. The contact network anti-wind dance support according to claim 1 is characterized in that The damping energy dissipation device is hingedly connected to the positioning rod or / and the damping energy dissipation device is hingedly connected to the bracket body.

4. The contact network anti-wind dance support according to claim 1 is characterized in that The damping energy dissipation device is arranged between the positioning rod and the positioning arm, or / and between the positioning rod and the oblique wrist arm, or / and between the positioning rod and the flat wrist arm.

5. The contact network anti-wind dance support according to any one of claims 1 to 4, characterized in that The damping energy dissipation device is a viscous damper or a viscoelastic damper.

6. The contact network anti-wind dance support according to claim 5 is characterized in that It also includes a steel spring, which is arranged in parallel or works in parallel with the damping energy dissipation device.

7. The contact network anti-wind dance support according to claim 5 is characterized in that The viscous damper comprises a damping cylinder, a piston body and a gel-like solid damper. The gel-like solid damper is arranged in the damping cylinder, and the piston body is partially embedded in the gel-like solid damper.

8. The contact network anti-wind dance support according to claim 5 is characterized in that The viscous damper comprises a damping cylinder, a piston body and a viscous liquid damper. The viscous liquid damper is arranged in the damping cylinder, and the piston body is partially immersed in the viscous liquid damper.

9. The contact network anti-wind dance support according to claim 5, characterized in that The damping energy dissipation device also includes a protective cover.

10. The contact network anti-wind dance support according to claim 2, characterized in that The utility model also comprises a steel spring, which works in parallel with the damping energy dissipation device through a rocker rod.

11. The contact network anti-wind dance support according to claim 10, characterized in that The damping energy dissipation device and / or the steel spring are arranged at an angle of 30-60 degrees to the rocker arm.

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