CN-117207856-B - Vibration reduction and shock resistance device for contact net

CN117207856BCN 117207856 BCN117207856 BCN 117207856BCN-117207856-B

Abstract

A vibration reduction and shock resistance device for a contact net comprises a positioning plate, an upper plate, a lower plate, an embedded plate, two several-type pressing plates and an elastic body, wherein the positioning plate is arranged below a support column, the opening sides of the two several-type pressing plates are arranged in a crossing manner, a rectangular gap for installing the elastic body is formed in the inner wall, the transverse ends of two sides of one of the several-type pressing plates are connected with the upper plate, the transverse ends of two sides of the other several-type pressing plate are connected with the lower plate, the embedded plate is arranged above a foundation, and after the vibration reduction and shock resistance device is installed, the upper plate is connected with the support column through anchor bolts, and the lower plate is connected with the foundation. The vibration reduction and shock resistance device has strong bearing capacity, vibration reduction and shock resistance, is safe and reliable, has no axial tension, and has no possibility of bus bar breakage or wire breakage, thereby avoiding flexible drilling bow, burning and thawing, softening at high temperature, wire defects and wire breakage faults caused by pantograph faults.

Inventors

WANG YUHUAN
YU PENG
QIAO JINXIN
ZHANG CHENG
TIAN SHENGPING
SHAO YAN
ZHANG XIAODONG
Hong Lintao
CAO XIAOGANG
WANG QIANG
WANG WEI
WU YAFEI
JIN GUANG
Luo Qiaoye
YANG JIA
DENG ZHIGUANG
LIU LEI

Assignees

中铁第一勘察设计院集团有限公司
陕西詹仁轨道交通科技有限公司

Dates

Publication Date: 20260505
Application Date: 20231013

Claims (8)

1. The vibration reduction and shock resistance device for the overhead line system is characterized by comprising an upper plate (2), two face-to-face crossed several pressing plates (3) and a lower plate (4), wherein the upper plate (2), the two face-to-face crossed several pressing plates (3) and the lower plate (4) are sequentially arranged between a support column (1) and a foundation; The upper plate (2) is fixed below the support column (1) through an anchor bolt; The sealing plate comprises an upper plate (2), a lower plate (4), a plurality of stiffening steel plates (17) and sealing steel plates (16), wherein the end parts of two side walls of one of the plurality of pressing plates (3) are fixedly arranged below the upper plate (2), the upper surface of the other pressing plate is not contacted with the lower surface of the upper plate (2), the end parts of the two side walls of the other pressing plate (3) are fixedly arranged above the lower plate (4), the lower surface of the other pressing plate is not contacted with the upper surface of the lower plate (4), a rectangular space (5) is formed between the two pressing plates (3), an elastomer (6) is arranged in the rectangular space (5), the upper side and the lower side of the elastomer (6) are fixedly connected with the pressing plates (3), a plurality of stiffening steel plates (17) are transversely distributed in the elastomer (6), sealing steel plates (16) parallel to the stiffening steel plates (17) are respectively arranged on the upper side and the lower side of the elastomer (6), the sealing steel plates (16) are wrapped in the elastomer (6), the sealing steel plates (16) are connected with the upper surfaces of the plurality of the pressing plates (3) through bolts, and corners of the sealing steel plates (17) are rounded. The lower plate (4) is fixed above the foundation through an anchor bolt.
2. The vibration reduction and shock resistance device for the overhead line system according to claim 1, wherein the two side wall ends of one of the several pressing plates (3) respectively extend outwards to form a first transverse end (8) fixedly connected with the upper plate (2), and the two side wall ends of the other of the several pressing plates (3) respectively extend outwards to form a second transverse end (9) fixedly connected with the lower plate (4).
3. The vibration reduction and shock resistance device for the overhead line system according to claim 2, further comprising two upper pressing plates (10) and two lower pressing plates (11), wherein first grooves (12) which are used for installing the first transverse ends (8) and are suitable for the two side edges of the upper plate (2) are respectively arranged, second grooves (13) which are used for installing the second transverse ends (9) and are suitable for the two side edges of the lower plate (4) are respectively arranged, the upper pressing plates (10) are arranged below the upper plate (2) and are used for fixedly supporting the first transverse ends (8), and the lower pressing plates (11) are arranged above the lower plate (4) and are used for limiting and fixing the second transverse ends (9).
4. A vibration damping and shock-resistant device for overhead line systems according to claim 3, characterized in that grooves (14) corresponding to the side walls of the several types of pressing plates (3) are respectively formed on one side of the upper pressing plate (10) and the lower pressing plate (11) facing the several types of pressing plates (3).
5. A vibration reduction and shock resistance device for a contact net according to claim 3, wherein the first groove (12) and the second groove (13) are through grooves, and the upper surface of the first transverse end (8) and the lower surface of the second transverse end (9) are respectively flush with the upper surface of the upper plate (2) and the lower surface of the lower plate (4).
6. The vibration reduction and shock resistance device for the overhead line system according to claim 5, further comprising a positioning plate (15) arranged between the support column (1) and the upper plate (2), and a pre-buried plate (7) arranged between the foundation and the lower plate (4), wherein the first transverse end (8) is contacted with the lower surface of the positioning plate (15), and the second transverse end (9) is contacted with the upper surface of the pre-buried plate (7).
7. The vibration reduction and shock resistance device for the overhead line system according to claim 1, further comprising a protective cover arranged around the vibration reduction and shock resistance device, wherein the rectangular space (5) is a non-closed space.
8. The vibration reduction and shock resistance device for the overhead line system according to claim 1, wherein the elastic body (6) is integrally cast by polyurethane, the upper side and the lower side of the elastic body are connected with the several-type pressing plates (3) through bolts, and the peripheral side walls of the elastic body (6) are not contacted with the inner wall of the rectangular space (5).

Description

Vibration reduction and shock resistance device for contact net [ Field of technology ] The invention belongs to the technical field of railway contact net foundations, and particularly relates to a vibration reduction and shock resistance device for a contact net. [ Background Art ] The high-speed railway contact net is a high-voltage power line which is erected along the upper part of a steel rail in a zigzag shape and is used for current taking of a pantograph, and consists of a contact suspension part, a supporting device, a positioning device, a support and a foundation. The support column and the foundation of the overhead contact system are used as the root of the overhead contact system of the high-speed railway to bear the whole load of the contact suspension, support and positioning device, and the overhead contact system is suspended and fixed at a specified position and height. The pre-stressed reinforced concrete column and the steel column are adopted in the overhead line system in China, the foundation is the steel column, namely, the steel column is fixed on the foundation made of the underlying reinforced concrete, the foundation bears all loads transmitted by the column, the stability of the column is ensured, the pre-stressed reinforced concrete column and the foundation are made into a whole, and the lower end of the pre-stressed reinforced concrete column is directly buried underground. In a certain motion track, the contact line of the electric contact net can also transmit the pressure received by the contact line to the supporting device, so that the stability of the whole electric railway contact net system is maintained. However, the existing structure has the following defects: (1) The rigid contact suspension is made of a hard aluminum alloy material, the adjustability range is small, the self gravity and the height of the support column and the contact net need to be considered during installation, otherwise permanent defects can be caused to cause permanent deformation of the busbar, or defects which cannot be corrected are formed in the middle of the anchor section. (2) When an earthquake, wind or high speed of vehicle occurs, the strut can generate bending moment on the foundation, which can lead to the instant separation of the pantograph and the contact line, namely off-line phenomenon. The phenomenon can cause that ① causes the increase of electric sparks pulled out between the pantograph nets and even arcing between the pantograph and the contact net, so that the contact line and a sliding plate of the pantograph can be burnt when the electric abrasion of the contact line and the pantograph is serious, ② causes uneven abrasion of the contact line of an acceleration section and an anchor section joint of a train and the abrasion of carbon slip of the acceleration pantograph and uneven working surface of the acceleration section, and ③ causes the working condition of traction substation equipment (such as a rectifier, a rectifier transformer and the like) to be worsened and the current-carrying quality of the train to be worsened. (3) Because the ground surface is also provided with flexible contact suspension in the rigid contact net, the bow gateway system in the rigid-flexible transition area can become bad due to the different elasticity of the two suspensions. The device has the advantages that off-line phenomenon occurs when the pantograph is driven to the flexible contact suspension area by the rigid contact suspension, and large hard points occur when the pantograph is driven to the rigid contact suspension area by the flexible contact suspension, so that the pantograph is driven. [ Invention ] In order to solve the problems, the invention provides a vibration reduction and shock resistance device for a contact net, which is arranged between a support column and a foundation through an anchor bolt, converts bending moment generated by wind power, earthquake, train vibration and the like into pressure acting on an elastomer under the action of a plurality of pressing plates, and completes the actions of the support column on vertical bearing, vertical bending moment, horizontal shearing and the like of the foundation through the elastomer, thereby avoiding the problems. The invention provides a vibration reduction and shock resistance device for a contact net, which comprises an upper plate, two face-to-face crossed press plates and a lower plate, wherein the upper plate, the two face-to-face crossed press plates and the lower plate are sequentially arranged between a support column and a foundation; in the installation process, the upper plate anchoring bolt can be fixed below the support column through the anchoring bolt; the two side wall ends of one of the several pressing plates are fixedly arranged below the upper plate, the upper surface of the pressing plate is not contacted with the lower surface of the upper plate, the two side wall ends of the other pressi