A damping and anti-seismic device for a catenary

Abstract

A vibration damping and seismic resistant device for overhead contact lines includes: a positioning plate, an upper plate, a lower plate, an embedded plate, two shaped pressure plates, and an elastomer. The positioning plate is positioned below the support column. The two shaped pressure plates are arranged face-to-face, forming a rectangular gap on their inner walls for installing the elastomer. The lateral ends of one shaped pressure plate are connected to the upper plate, and the lateral ends of the other shaped pressure plate are connected to the lower plate. The embedded plate is positioned above the foundation. After installation, the upper plate is connected to the support column and the lower plate is connected to the foundation using anchor bolts. This vibration damping and seismic resistant device has strong load-bearing capacity, vibration damping, and seismic resistance. It is safe, reliable, and has no axial tension, eliminating the possibility of busbar breakage or wire breakage, thus avoiding wire breakage caused by flexible pantographs, melting, softening at high temperatures, wire defects, and pantograph malfunctions.

Description

[Technical Field]

[0001] This invention belongs to the field of railway catenary basic technology, specifically relating to a vibration reduction and seismic resistance device for catenary. [Background Technology]

[0002] The overhead contact system of a high-speed railway is a high-voltage transmission line erected in a zigzag pattern above the rails in electrified railways, supplying current to the pantograph. It consists of several parts: contact suspension, support devices, positioning devices, supports, and foundations. The supports and foundations of the overhead contact system serve as its foundation, bearing the entire load of the contact suspension, support, and positioning devices, and fixing the contact system at a specified position and height. In my country, prestressed reinforced concrete supports and steel columns are used. The foundation refers to the steel support; the steel support is fixed to a reinforced concrete foundation, which bears the entire load transmitted from the support and ensures the stability of the support. The prestressed reinforced concrete support and foundation are integrated, with the lower end directly buried underground. Within a certain trajectory, the contact wire of the electrical contact system can also transmit the pressure it receives to the support devices, thereby maintaining the stability of the entire electrified railway contact system. However, the existing structure has the following defects:

[0003] (1) The rigid contact suspension is made of hard aluminum alloy, which has a small range of adjustability. When installing, the weight and height of the support and the contact network itself need to be considered. Otherwise, permanent defects will be caused, resulting in permanent deformation of the busbar or forming an uncorrectable defect in the middle of the anchor section.

[0004] (2) During earthquakes, wind, or high train speeds, the support pillars will generate bending moments on the foundation, which will cause the pantograph and contact wire to separate momentarily, i.e., disconnect. This phenomenon will lead to: ① an increase in electrical sparks between the pantograph and the contact wire, and even arcing between the pantograph and the contact wire, thereby aggravating the electrical wear of the contact wire and the pantograph. In severe cases, it can burn the contact wire and the pantograph's sliding plate; ② uneven wear of the contact wire in the acceleration section and anchor section of the train, and accelerated wear of the pantograph's carbon sliding plate and unevenness of its working surface; ③ deterioration of the working conditions of traction substation equipment (such as rectifiers, rectifier transformers, etc.) and deterioration of the train's current collection quality.

[0005] (3) Because there is also a flexible contact suspension on the ground in the rigid contact network, the pantograph-catenary relationship in the transition zone between rigid and flexible contact networks will be worse due to the different elasticities of the two suspensions. That is, when the pantograph moves from the rigid contact suspension area to the flexible contact suspension area, a line-off phenomenon occurs; when the pantograph moves from the flexible contact suspension area to the rigid contact suspension area, a large hard point will appear, resulting in pantograph strike. [Summary of the Invention]

[0006] To address the aforementioned problems, this invention provides a vibration reduction and seismic resistance device for overhead contact lines. This device is installed between the support column and the foundation using anchor bolts. Under the action of several pressure plates, the bending moment generated by wind, earthquakes, train vibrations, etc., is converted into pressure acting on an elastic body. The elastic body then performs the vertical bearing, vertical bending moment, and horizontal shearing functions of the support column on the foundation, thereby preventing the aforementioned problems from occurring.

[0007] The present invention provides a vibration reduction and seismic resistance device for contact wires, comprising an upper plate, two face-to-face cross-shaped pressure plates, and a lower plate arranged sequentially between the support column and the foundation;

[0008] During installation, the upper plate anchor bolts can be fixed to the bottom of the support column using anchor bolts;

[0009] One of the pressure plates has its two side walls fixed to the bottom of the upper plate, and its upper surface does not contact the lower surface of the upper plate. The other pressure plate has its two side walls fixed to the top of the lower plate, and its lower surface does not contact the upper surface of the lower plate. A rectangular space is formed between the two pressure plates. An elastic body is provided in the rectangular space. The upper and lower sides of the elastic body are fixed to the pressure plates.

[0010] The lower plate is fixed to the foundation by anchor bolts;

[0011] The upper plate, the pressure plate, and the lower plate are all made of steel.

[0012] In particular, because the pressure plates are plate-shaped, their contact area with the upper and lower plates is relatively small. When the vibration damping and seismic resisting device is subjected to large loads due to strong winds or earthquakes, the pressure plates may deform, resulting in uneven stress on the elastic body and affecting the stability of the vibration damping and seismic resisting device. Therefore, one of the pressure plates extends outward from the ends of its two side walls to form a first transverse end that is fixedly connected to the upper plate, and the other pressure plate extends outward from the ends of its two side walls to form a second transverse end that is fixedly connected to the lower plate. This design increases the contact area between the pressure plates and the upper and lower plates, ensuring a tighter connection between the pressure plates and the upper and lower plates. This provides better fixation for the elastic body, ensuring uniform stress on the elastic body and thus ensuring the stability of the vibration damping and seismic resisting device, effectively maintaining the stability of the entire electrified railway contact network system.

[0013] Specifically, to further improve the stability of the vibration reduction and seismic resistance device, it also includes: two upper pressure plates and two lower pressure plates. The upper plates are respectively provided with first grooves on both sides for installing the first lateral end, and the lower plates are respectively provided with second grooves on both sides for installing the second lateral end. The upper pressure plates are located below the upper plates to provide fixed support for the first lateral end, and the lower pressure plates are located above the lower plates to limit and fix the second lateral end. With this design, the first and second lateral ends can be limited by the first and second grooves, and the first and second lateral ends can be fixed in the first and second grooves by the upper and lower pressure plates. This facilitates installation and improves the installation stability of the vibration reduction and seismic resistance device.

[0014] Specifically, the upper and lower pressure plates are respectively provided with grooves on the side facing the pressure plates that are adapted to the side walls of the pressure plates. These grooves have a certain positioning function, which facilitates the installation of the upper and lower pressure plates with the upper and lower plates, thereby saving installation time and improving work efficiency. At the same time, it can indirectly improve the installation stability of the vibration reduction and anti-seismic device.

[0015] Specifically, for ease of processing, both the first and second grooves are through grooves, and the upper surface of the first transverse end and the lower surface of the second transverse end are flush with the upper surface of the upper plate and the lower surface of the lower plate, respectively. With this design, when the vibration damping and seismic resisting device is subjected to load, it can directly act on the pressure plate without the need for the transmission of load through the upper and lower plates. Through the deformation of the elastic body, the vibration damping and seismic resisting device can quickly complete the vibration damping and seismic resisting. Therefore, the vibration damping and seismic resisting device has the advantages of strong disaster resistance and high reliability.

[0016] Specifically, it also includes: a positioning plate located between the support column and the upper plate, and an embedded plate located between the foundation and the lower plate, wherein the first lateral end is in contact with the lower surface of the positioning plate, and the second lateral end is in contact with the upper surface of the embedded plate.

[0017] In particular, in order to monitor the working condition of the elastomer in a timely manner, the rectangular space formed by the two geometric pressure plates is a non-enclosed space. However, since the vibration damping and shock stabilization device is generally used in open environments, in order to prevent dust and other objects from entering the rectangular space and affecting the normal operation of the elastomer, a protective cover is also provided around the vibration damping and shock stabilization device. The lower edge of the protective cover is located on the ground, and the upper edge is attached to the side wall of the support column.

[0018] Specifically, in this invention, the elastomer can be integrally cast from rubber or polyurethane. Polyurethane elastomer has advantages such as high weather resistance and hydrolysis resistance, and also has good elastic deformation and recovery functions. Therefore, polyurethane is preferred as the elastomer in this invention. Furthermore, the elastomer is synthesized using a low-temperature reactor process and cast on an atmospheric pressure production line, which has advantages such as low carbon emissions, environmental friendliness, and low energy consumption, thereby reducing production costs. At the same time, in order to prevent the elastomer from detaching from the pressure plates after long-term operation, the upper and lower surfaces of the elastomer are fixedly connected to the pressure plates by adhesive or bolts. This invention prefers bolt connection, which can improve the tightness of the connection between the elastomer and the pressure plates and improve the vertical load-bearing capacity of the elastomer. When the elastomer is in a compressed state, in order to provide deformation space for the elastomer, the side walls of the elastomer on both sides are not in contact with the inner wall of the rectangular space.

[0019] In particular, the elastic body has several reinforcing steel plates evenly distributed laterally inside. These reinforcing steel plates enable the elastic body to have better vertical bearing capacity, and the vertical compressive stress can reach 25MPa. As a result, the vibration reduction and seismic resistance device has the characteristics of high horizontal stiffness, strong vibration reduction and seismic resistance.

[0020] Specifically, since the pressure plates are made of metal, prolonged use may cause compression damage to the elastomer, or even detachment between the elastomer and the pressure plates, affecting the stability of the vibration damping and anti-vibration device. Therefore, the elastomer is provided with sealing steel plates parallel to the stiffening steel plates on its upper and lower sides. These sealing steel plates are wrapped around the elastomer, allowing them to be directly connected to the pressure plates with bolts. The elastomer's wrapping of the sealing steel plates improves the tightness of the connection between the elastomer and the pressure plates, while also preventing damage to the vibration damping system. The anti-seismic device, due to prolonged operation, damages the elastomer. This not only increases the service life of the elastomer but also further enhances its vertical load-bearing capacity, thus effectively maintaining the stability of the entire electrified railway contact network system. Meanwhile, since the sealing steel plate and stiffening steel plate are both made of steel, they can damage the elastomer after prolonged use. Therefore, the edges and corners of the sealing steel plate and stiffening steel plate are rounded. This facilitates casting and processing and allows the polyurethane to better wrap around the outside of the sealing steel plate, enhancing the covering force and increasing the service life of the elastomer.

[0021] Compared with the prior art, the vibration reduction and shock absorption device for overhead contact lines provided by the present invention has the following beneficial effects:

[0022] 1) It is fixed between the support and the foundation by anchor bolts, which reduces the complexity of construction and will not cause permanent deformation of the busbar due to minor mistakes in the construction process. This avoids wire breakage caused by flexible pantograph, melting, softening at high temperature, wire defects and pantograph failure, and improves the safety and adaptability of train operation accordingly.

[0023] 2) The elastic body combined with several pressure plates enables the vibration reduction and anti-seismic device to withstand loads in two directions. In the direction perpendicular to the track, it bears the weight of the support and contact wire, ensuring the stability of the support and contact wire. In the direction along the track, it can withstand the wind force of the contact suspension and the horizontal component force generated by the conductor changing direction. In this way, the contact wire to the rail surface can be kept at the same height throughout the entire railway network span, which not only avoids the instantaneous separation of the pantograph and the contact wire, but also ensures the uniform elasticity of the contact suspension throughout the entire span, eliminates hard points at the suspension point, and avoids the occurrence of pantograph knocking.

[0024] In summary, this vibration reduction and seismic resistance device has strong load-bearing capacity, vibration reduction and seismic resistance, is safe and reliable, and has no axial tension. It eliminates the possibility of busbar breakage or wire breakage, thereby avoiding wire breakage caused by flexible pantograph, melting, softening at high temperatures, wire defects, and pantograph malfunctions. This improves the safety and adaptability of train operation and has advantages such as strong disaster resistance, low operating cost, high reliability, simple maintenance, small failure range in accident conditions, and high safety and reliability of the contact network system. [Attached Image Description]

[0025] Figure 1 This is a cross-sectional view of a first embodiment of the contact wire vibration reduction and anti-vibration device of the present invention;

[0026] Figure 2 This is a cross-sectional view of a second embodiment of the contact wire vibration reduction and anti-vibration device of the present invention;

[0027] Figure 3 This is a top view of a third embodiment of the vibration reduction and shock absorption device for contact wires according to the present invention; Figure 4 This invention relates to a vibration reduction and shock absorption device for overhead contact lines. Figure 3 Cross-sectional view at BB

[0028] Figure 5 This invention relates to a vibration reduction and shock absorption device for overhead contact lines. Figure 4 Cross-sectional view at point AA;

[0029] Figure 6 This is a diagram showing the state of the elastic body under pressure in Embodiment 3 of the vibration reduction and shock absorption device for contact wires according to the present invention;

[0030] Figure 7 This is a diagram showing the state of the elastic body under tension in Embodiment 3 of the vibration reduction and shock absorption device for contact wires according to the present invention;

[0031] Figure 8 This is a perspective view of a third embodiment of the contact wire vibration reduction and shock absorption device of the present invention;

[0032] Figure 9 This is an exploded view of a third embodiment of the contact wire vibration reduction and shock absorption device of the present invention;

[0033] Figure 10 This is an installation structure diagram of the contact wire vibration reduction and seismic resistance device of the present invention when applied to a tunnel;

[0034] Figure 11 This is an installation structure diagram of the contact wire vibration reduction and seismic resistance device of the present invention when applied to a bridge.

[0035] In the attached diagram, 1 is the support column, 2 is the upper plate, 3 is the shaped pressure plate, 4 is the lower plate, 5 is the rectangular space, 6 is the elastic body, 7 is the embedded plate, 8 is the first transverse end, 9 is the second transverse end, 10 is the upper pressure plate, 11 is the lower pressure plate, 12 is the first groove, 13 is the second groove, 14 is the groove, 15 is the positioning plate, 16 is the sealing steel plate, and 17 is the stiffening steel plate.

Detailed Implementation Methods

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings.

[0037] Example 1:

[0038] Please see Figures 1-2 The present invention provides a vibration reduction and seismic resistance device for contact wires, comprising an upper plate 2, two face-to-face cross-shaped pressure plates 3, and a lower plate 4 arranged sequentially between the support column 1 and the foundation, wherein the upper plate 2, the cross-shaped pressure plates 3, and the lower plate 4 are all made of metal materials such as steel.

[0039] The upper plate 2 is fixed to the bottom of the support column 1 by anchor bolts, which facilitates the installation of the entire electrified railway contact network;

[0040] One of the pressure plates 3 has its two side wall ends fixed below the upper plate 2, and its upper surface does not contact the lower surface of the upper plate 2. The other pressure plate 3 has its two side wall ends fixed above the lower plate 4, and its lower surface does not contact the upper surface of the lower plate 4. A non-enclosed rectangular space 5 is formed between the two pressure plates 3. An elastic body 6 is provided in the middle of the rectangular space 5. The upper and lower sides of the elastic body 6 are fixed to the pressure plates 3.

[0041] The lower plate 4 is fixed to the foundation by anchor bolts. In the actual installation process, this makes the installation of the entire electrified railway contact network more precise, reduces the installation requirements, and avoids permanent deformation of the busbar due to excessively high installation requirements.

[0042] Working principle:

[0043] First, the contact network vibration damping and seismic resistance device is installed between the support column 1 and the foundation using anchor bolts. After installation, the support column 1 and the contact network, under their own weight, cause the upper plate 2 to bear a downward vertical force. As a result, the pressure plates 3 connected to the upper plate 2 move downward. At this time, the elastic body 6 located in the rectangular space 5 is under tension. The gap between the upper and lower surfaces of the two intersecting pressure plates 3 and the lower surface of the upper plate 2 and the upper surface of the lower plate 4 decreases, but they do not contact each other. Thus, under the action of the elastic body 6, the contact network can work stably. When the support column and the contact network above it generate a bending moment on the vibration damping and seismic resistance device due to excessive vehicle speed, wind, earthquake, or other reasons, the upper plate 2 is under tension, which drives the pressure plates 3 connected to the upper plate 2 to move upward. At this time, the distance between the two pressure plates 3 decreases, and the elastic body 8 is under pressure. At this time, the gap between the upper and lower surfaces of the two intersecting pressure plates 3 and the lower surface of the upper plate 2 and the upper surface of the lower plate 4 increases. Under the action of the elastic body 6, the contact network above the vibration damping and seismic resistance device can work stably. Therefore, the vibration reduction and seismic resistance device can not only bear the vertical load of the support column 1 on the foundation, but also absorb the vibration and seismic energy generated by the support column 1 due to excessive vehicle speed or wind speed. It can also increase the vibration period through the damping of the elastic body, thereby reducing the vibration amplitude and playing the role of vibration reduction and seismic resistance, thus better maintaining the stability of the entire electrified railway contact network system.

[0044] Example 2

[0045] Please see Figure 3 The present invention provides a vibration reduction and seismic resistance device for contact wires, comprising an upper plate 2, two face-to-face cross-shaped pressure plates 3, and a lower plate 4 arranged sequentially between the support column 1 and the foundation, wherein the upper plate 2, the cross-shaped pressure plates 3, and the lower plate 4 are all made of metal materials such as steel.

[0046] The upper plate 2 is fixed to the bottom of the support column 1 by anchor bolts, which facilitates the installation of the entire electrified railway contact network;

[0047] One of the pressure plates 3 has two side walls that extend outward to form first transverse ends 8 that are fixedly connected to the lower surface of the upper plate 2, and the upper surface of the pressure plate 3 is not in contact with the lower surface of the upper plate 2. The other pressure plate 3 has two side walls that extend outward to form second transverse ends 9 that are fixedly connected to the upper surface of the lower plate 4, and the lower surface of the pressure plate 3 is not in contact with the upper surface of the lower plate 4. A non-enclosed rectangular space 5 is formed between the two pressure plates 3. An elastic body 6 is provided in the middle of the rectangular space 5, and the upper and lower sides of the elastic body 6 are fixed to the pressure plates 3.

[0048] The lower plate 4 is fixed to the foundation by anchor bolts. In the actual installation process, this makes the installation of the entire electrified railway contact network more precise, reduces the installation requirements, and avoids permanent deformation of the busbar due to excessively high installation requirements.

[0049] Working principle:

[0050] First, the contact wire vibration damping and seismic resistance device is installed between the support column 1 and the foundation using anchor bolts. After installation, the support column 1 and the contact wire, under their own weight, cause the upper plate 2 to bear a downward vertical force. This causes the pressure plates 3 connected to the upper plate 2 via the first transverse end 8 to move downwards. Because the first transverse end 8 increases the contact area between the upper plate 2 and the pressure plates 3, the vertical force borne by the upper plate 2 can be smoothly and evenly applied to the elastic body 6 through the pressure plates 3. At this time, the gap between the upper and lower surfaces of the two intersecting pressure plates 3 and the lower surface of the upper plate 2 and the upper surface of the lower plate 4 decreases, but they do not contact each other. At this time, the elastic body 6 located within the rectangular space 5 is under tension. Under the action of the elastic body 6, the contact network can work stably. When the support column and the contact network above it generate bending moment on the vibration reduction and seismic resistance device due to excessive train speed, wind, earthquake, etc., the upper plate 2 is under tension, which drives the pressure plate 3 connected to the upper plate 2 through the second transverse end 9 to move upward. Since the first transverse end 8 increases the contact area between the upper plate 2 and the pressure plate 3, and the second transverse end 9 increases the contact area between the upper surface of the lower plate 4 and the pressure plate 3, the gap between the upper and lower surfaces of the two intersecting pressure plates 3 and the lower surface of the upper plate 2 and the upper surface of the lower plate 4 gradually increases. The elastic body 8 is uniformly compressed. Under the action of the elastic body 6, the contact network above the vibration reduction and seismic resistance device can work stably. Therefore, the vibration reduction and seismic resistance device can not only withstand the vertical load of the support column 1 on the foundation, but also absorb the vibration and seismic energy caused by excessive train speed or wind speed, and lengthen the vibration period through the damping of the elastic body, thereby reducing the vibration amplitude and playing the role of vibration reduction and seismic resistance, thus better maintaining the stability of the entire electrified railway contact network system.

[0051] Example 3

[0052] Please see Figures 3-9 The present invention provides a vibration reduction and seismic resistance device for contact wires, comprising an upper plate 2, an upper pressure plate 10, two face-to-face cross-shaped pressure plates 3, a lower plate 4, and a lower pressure plate 11 arranged sequentially between the support column 1 and the foundation, wherein the upper plate 2, the cross-shaped pressure plate 3, the lower plate 4, the upper pressure plate 10, and the lower pressure plate 11 are all made of metal materials such as steel.

[0053] One of the pressure plates 3 has two side walls that extend outward to form first transverse ends 8 that are fixedly connected to the lower surface of the upper plate 2, and the upper surface of the pressure plate 3 is not in contact with the lower surface of the upper plate 2. The other pressure plate 3 has two side walls that extend outward to form second transverse ends 9 that are fixedly connected to the upper surface of the lower plate 4, and the lower surface of the pressure plate 3 is not in contact with the upper surface of the lower plate 4. A non-enclosed rectangular space 5 is formed between the two pressure plates 3. An elastic body 6 is provided in the middle of the rectangular space 5, and the upper and lower sides of the elastic body 6 are fixed to the pressure plates 3.

[0054] The upper plate 2 is provided with first grooves 12 on both sides for installing the first transverse end 8. The upper plate 2 is I-shaped. The upper plate 2 is fixed to the bottom of the support column 1 by anchor bolts, which facilitates the installation of the entire electrified railway contact network during the actual installation process.

[0055] The lower plate 4 is installed with second grooves 13 corresponding to the second transverse end 9 on both sides. The lower plate 4 is fixed to the foundation by anchor bolts, which makes the installation of the entire electrified railway contact network more precise, reduces the installation requirements, and avoids permanent deformation of the busbar due to excessive installation requirements during installation.

[0056] The upper pressure plate 10 is located below the upper plate 2 and is used to fix and support the first transverse end 8. The lower pressure plate 11 is located above the lower plate 4 and is used to limit and fix the second transverse end 9.

[0057] In this embodiment, the first groove 12 and the second groove 13 are both through grooves. The upper surface of the first transverse end 8 and the lower surface of the second transverse end 9 are flush with the upper surface of the upper plate 2 and the lower surface of the lower plate 4, respectively. With this design, when the vibration damping and shock resistant device bears a load, it can directly act on the pressure plate without the need for the transmission of the upper and lower plates. Through the deformation of the elastic body, the vibration damping and shock resistant device can quickly complete the vibration damping and shock resistant. Therefore, the vibration damping and shock resistant device has the advantages of strong disaster resistance and high reliability.

[0058] Working principle:

[0059] First, the contact wire vibration damping and seismic resistance device is installed between the support column 1 and the foundation using anchor bolts. After installation, the support column 1 and the contact wire, under their own weight, directly exert force on the geometric pressure plate 3 connected to the upper plate 2. The geometric pressure plate 3 bears a downward vertical force, and a rapid and stable force acts on the elastic body 6. At this time, the gap between the upper and lower surfaces of the two intersecting geometric pressure plates 3 and the lower surface of the upper plate 2 and the upper surface of the lower plate 4 decreases, but they do not contact each other. At this time, the elastic body 6 located in the rectangular space 5 is under tension (e.g., Figure 6As shown), under the action of the elastic body 6, the contact wire can work stably; when the support and the contact wire above it generate a bending moment on the vibration reduction and anti-seismic device due to excessive vehicle speed, wind, earthquake, etc., the upper pressure plate 10 and the upper plate 2 are under tension. Since the second transverse end 9 is located in the second groove 13 and is fixed by the upper pressure plate 10, the tension can be directly applied to the elastic body 6. At this time, the gap between the upper and lower surfaces of the two cross-shaped pressure plates 3 and the lower surface of the upper plate 2 and the upper surface of the lower plate 4 gradually increases, and the elastic body 6 is uniformly compressed (as shown). Figure 7 As shown in the figure, under the action of the elastic body 6, the contact wire located above the vibration reduction and anti-seismic device can work stably.

[0060] Therefore, this vibration reduction and seismic resistance device can not only withstand the vertical load of the support column 1 on the foundation, but also absorb the vibration and seismic energy caused by excessive vehicle speed or wind speed. It can also lengthen the vibration period through the damping of the elastic body, thereby reducing the vibration amplitude and playing the role of vibration reduction and seismic resistance, thus better maintaining the stability of the entire electrified railway contact network system.

[0061] In the above embodiments, the elastomer 6 is made of highly weather-resistant and hydrolysis-resistant polyurethane through a low-temperature reactor synthesis process and an atmospheric pressure production line. Its upper and lower sides are connected to the pressure plate 3 by bolts, which increases the vertical bearing capacity of the elastomer 6. At the same time, in order to provide deformation space for the elastomer 6, the side walls of the elastomer 6 are not in contact with the inner wall of the rectangular space 5.

[0062] In addition, in the above embodiments, in order to prevent the elastomer 6 from being damaged after long-term use, or even from detaching from the pressure plate 3, the elastomer 6 has several reinforcing steel plates 17 evenly distributed laterally inside, and sealing steel plates 16 parallel to the reinforcing steel plates 17 are respectively provided on its upper and lower sides. In this way, the pressure plate 3 can be directly connected to the sealing steel plate 16 by bolts, without directly contacting the elastomer 6, thus indirectly protecting the elastomer 6 and improving the service life of the elastomer 6.

[0063] In addition, in the above embodiments, the sealing steel plate 16 is wrapped around the elastomer 6, which increases the contact area between the sealing steel plate 12 and the elastomer 8, making the connection between the two tighter. This can prevent the sealing steel plate 16 from separating from the elastomer 6 due to long-term operation, and indirectly improve the stability of the vibration reduction and shock absorption device.

[0064] In addition, in the above embodiments, the corners of the sealing steel plate 16 and the stiffening steel plate 17 are rounded, which makes it easier for the polyurethane to perfectly wrap the metal sealing steel plate 16 and the stiffening steel plate 17, avoiding problems such as incomplete pouring at sharp corners, and further improving the service life of the elastomer 8.

[0065] In addition, in the above embodiments, in order to periodically monitor the working performance of the elastomer 6, the rectangular space 5 formed by the two geometric pressure plates 3 is a non-enclosed space. However, non-enclosed spaces have certain hidden dangers. Therefore, in this embodiment, a protective cover (not shown in the figure) is installed around the vibration damping and shock stabilizing device. The lower side of the protective cover is buried in the ground, and the upper edge is attached to the side wall of the positioning plate 15. In this way, the protective cover can protect the vibration damping and shock stabilizing device, prevent dust and other objects from entering and affecting its normal operation, and at the same time prevent dust or small animals from entering along the rectangular space 7. This not only improves safety, but also ensures that the elastomer 8 is not disturbed by the outside world and can work normally.

[0066] In addition, in the above embodiment, the vibration reduction and seismic stabilization device further includes: a positioning plate 15 disposed between the support column 1 and the upper plate 2, and an embedded plate 7 disposed between the foundation and the lower plate 4. The first transverse end 8 is in contact with the lower surface of the positioning plate 15, and the second transverse end 9 is in contact with the upper surface of the embedded plate 7. Thus, after the installation of the vibration reduction and seismic stabilization device is completed, the device can be connected to the positioning plate 15 and the embedded plate 7 using anchor bolts. This achieves the connection between the foundation, the vibration reduction and seismic stabilization device, and the support column 1, facilitating both installation and subsequent maintenance, while also improving the tightness of the connection between the vibration reduction and seismic stabilization device and the support column and foundation.

[0067] In summary, the contact wire vibration reduction and seismic resistance device provided by this invention is used to bear the entire load of the support, contact suspension, support, and positioning devices, and to fix the contact suspension at a specified position and height. This device also bears the entire load transmitted from the support to the foundation, thereby ensuring the stability of the support. Simultaneously, within a certain trajectory, the contact wire of the electrical contact wire can also transmit the received pressure to the support device, thus maintaining the stability of the entire electrified railway contact wire system. Specifically, the vibration reduction and seismic resistance device is installed between the contact wire support 1 and the foundation. The upper pressure plate 10 and the upper plate 2 of the device are connected to the positioning plate 15 on the lower side of the support 1 by anchor bolts, and the lower pressure plate 11 and the lower plate 3 are connected to the embedded plate 7 above the foundation by anchor bolts. This facilitates installation and reduces installation requirements. At the same time, two shaped pressure plates 3 are set between the upper plate 2 and the lower plate 4. The two shaped pressure plates 3 are arranged face to face in a cross shape along the opening side, and an elastic body 6 is bolted to the upper and lower sides of the two shaped pressure plates 3. The vertical compressive stress of the elastic body 6 can reach 25MPa, and it has the characteristics of high load-bearing capacity, multiple stiffnesses, large horizontal stiffness, and strong vibration reduction capacity.

[0068] After the vibration damping and seismic resistance device is installed, it is placed between the support column 1 and the foundation via an embedded plate. The support column 1 and the overhead contact line above it exert a vertical force on the vibration damping and seismic resistance device. At this time, the pressure plates 3 connected to the upper plate 2 move downward, increasing the gap between the two pressure plates 3, thus putting the elastic body 6 under tension. When the vehicle speed is high, or under conditions of wind or earthquake, the support column generates a bending moment on the vibration damping and seismic resistance device. At this time, the upper pressure plate 10 connected to the support column 1 via the embedded plate 6 is under tension, forcing the gap between the two pressure plates 3 to decrease, putting the elastic body 6 under compression. In this way, the bending moment generated by the support column 1 on the vibration damping and seismic resistance device is converted from tension to compression through the pressure plates 3 and the elastic body 6. Therefore, the vibration damping and seismic resistance device can withstand loads in two directions: in the direction perpendicular to the track, it bears the weight of the support column contact suspension and its support device; in the direction along the track, it bears the entire tension of the contact suspension lower anchor.

[0069] In summary, this vibration reduction and seismic resistance device has strong load-bearing capacity, vibration reduction and seismic resistance, and is safe, reliable and has no axial tension. It eliminates the possibility of busbar breakage or wire breakage, thereby avoiding wire breakage caused by flexible pantograph, melting, softening at high temperature, wire defects and pantograph failure, and thus improving the safety and adaptability during operation.

[0070] The vibration reduction and seismic resistance device provided by this invention can also be applied to tunnels, bridges, etc. When applied to tunnels, its installation method is as follows: Figure 10 As shown, the upper plate 2 of this device is connected to the tunnel via anchor bolts, and the embedded plate 7 is connected to the tunnel support column via anchor bolts. This places the device between the tunnel support column and the tunnel. Through its internal structural design, it can withstand the weight of the tunnel and its supporting structure in the vertical direction, thus achieving seismic resistance and vibration reduction. When this vibration reduction and seismic resistance device is applied to bridges, it can be used in conjunction with ordinary bridge bearings. The installation method is as follows: Figure 11 As shown, this achieves the functions of tensile strength, beam anti-falling, and dual seismic resistance. Furthermore, this device can also be used as a tensile device in other building structures.

Claims

1. A vibration damping and seismic resistant device for overhead contact lines, characterized in that, It includes an upper plate (2) arranged between the support column (1) and the foundation, two face-to-face cross-shaped pressure plates (3), and a lower plate (4); The upper plate (2) is fixed to the bottom of the support column (1) by anchor bolts; One type of pressure plate (3) has its two side walls fixed at the bottom of the upper plate (2), and its upper surface does not contact the lower surface of the upper plate (2). The other type of pressure plate (3) has its two side walls fixed at the top of the lower plate (4), and its lower surface does not contact the upper surface of the lower plate (4). A rectangular space (5) is formed between the two type of pressure plates (3). An elastic body (6) is provided in the rectangular space (5). The upper and lower sides of the elastic body (6) are fixed to the type of pressure plate (3). Several stiffening steel plates (17) are evenly distributed horizontally inside the elastic body (6). The upper and lower sides of the elastic body (6) are respectively provided with sealing steel plates (16) parallel to the stiffening steel plates (17). The sealing steel plates (16) are wrapped around the elastic body (6). The sealing steel plates (16) are connected to the type of pressure plate (3) by bolts. The corners of the sealing steel plates (16) and the stiffening steel plates (17) are rounded. The lower plate (4) is fixed to the foundation by anchor bolts.

2. The vibration damping and shock resistant device for overhead contact lines according to claim 1, characterized in that, One type of pressure plate (3) has two side walls that extend outward to form a first transverse end (8) that is fixedly connected to the upper plate (2), and the other type of pressure plate (3) has two side walls that extend outward to form a second transverse end (9) that is fixedly connected to the lower plate (4).

3. The vibration damping and shock resistant device for overhead contact lines according to claim 2, characterized in that, Also includes: Two upper pressure plates (10) and two lower pressure plates (11) are provided. The upper plate (2) is provided with a first groove (12) on both sides for installing the first transverse end (8). The lower plate (4) is provided with a second groove (13) on both sides for installing the second transverse end (9). The upper pressure plate (10) is located below the upper plate (2) for fixing and supporting the first transverse end (8). The lower pressure plate (11) is located above the lower plate (4) for limiting and fixing the second transverse end (9).

4. A vibration damping and seismic resistant device for overhead contact lines according to claim 3, characterized in that, The upper pressure plate (10) and the lower pressure plate (11) are respectively provided with grooves (14) on the side facing the pressure plate (3) that are adapted to the side wall of the pressure plate (3).

5. A vibration damping and seismic resistant device for overhead contact lines according to claim 3, characterized in that, The first groove (12) and the second groove (13) are both through grooves. The upper surface of the first transverse end (8) and the lower surface of the second transverse end (9) are flush with the upper surface of the upper plate (2) and the lower surface of the lower plate (4), respectively.

6. A vibration damping and seismic resistant device for overhead contact lines according to claim 5, characterized in that, Also includes: A positioning plate (15) is provided between the support column (1) and the upper plate (2), and an embedded plate (7) is provided between the foundation and the lower plate (4). The first transverse end (8) is in contact with the lower surface of the positioning plate (15), and the second transverse end (9) is in contact with the upper surface of the embedded plate (7).

7. A vibration damping and seismic resistant device for overhead contact lines according to claim 1, characterized in that, Also includes: The protective cover installed around the vibration reduction and shock absorption device, the rectangular space (5) is a non-enclosed space.

8. A vibration damping and seismic resistant device for overhead contact lines according to claim 1, characterized in that, The elastomer (6) is integrally cast with polyurethane. Its upper and lower sides are connected to the pressure plate (3) by bolts. The side walls of the elastomer (6) are not in contact with the inner wall of the rectangular space (5).

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