Search

CN-122016115-A - Bow net pressure sensor mounted on spring type pantograph bow of rail transit electric bus

CN122016115ACN 122016115 ACN122016115 ACN 122016115ACN-122016115-A

Abstract

The invention discloses an arch net pressure sensor arranged on a spring type pantograph head of a rail transit bus, which comprises an upper frame and a lower frame, wherein the left end of the upper frame and the left end of the lower frame are connected with a main spring, the right end of the lower frame is provided with a guide rail, the right end of the upper frame is provided with a slide bar, the slide bar is inserted into the guide rail, the lower end of the slide bar penetrates through the guide rail and then is fixed with a part C, the middle part of the lower frame is clamped and fixed by a part B and a part A, the lower end of the part A is bent rightwards to the lower part of the part C and is fixed with an arch net pressure sensor, a force guiding spring assembly is arranged between a pressure diaphragm of the arch net pressure sensor and the part C, and the force guiding spring assembly comprises a spring guide bar sleeve, a force guiding spring and a spring guide bar seat which are sequentially arranged from top to bottom. The bow net pressure sensor can be additionally arranged on the basis of not changing the bow head structure of the spring type pantograph, and can be used for detecting the bow net pressure between the bow head of the spring type pantograph and the contact net.

Inventors

  • WU XUNQI
  • WENG QIYONG

Assignees

  • 光子行智能科技(常州)有限公司
  • 上海孚童赫智能科技有限公司

Dates

Publication Date
20260512
Application Date
20260123

Claims (7)

  1. 1. The bow net pressure sensor comprises an upper frame (1) and a lower frame (3), and is characterized in that the left end of the upper frame (1) and the left end of the lower frame (3) are connected with a main spring (2), the right end of the lower frame (3) is provided with a guide rail (7), the right end of the upper frame (1) is provided with a slide bar, the slide bar is inserted into the guide rail (7), and a part C (6) is fixed after the lower end of the slide bar passes through the guide rail (7); The middle part of the lower frame (3) is clamped and fixed by a component B (5) and a component A (4), the lower end of the component A (4) is bent rightwards to the lower part of a component C (6) and is provided with a pressure detection point (9), an arch net pressure sensor (33) is fixed at the pressure detection point (9), and a force guide spring assembly is arranged between a pressure diaphragm (32) of the arch net pressure sensor (33) and the component C (6).
  2. 2. The bow net pressure sensor installed on the bow head of the spring type pantograph of the rail transit bus according to claim 1, wherein the force guiding spring assembly comprises a spring guide rod sleeve (25), a force guiding spring (20) and a spring guide rod seat (29) which are sequentially arranged from top to bottom.
  3. 3. The bow net pressure sensor installed on the head of a spring type pantograph of an electric bus as set forth in claim 2, wherein the spring guide bar sleeve (25) is installed in a guide bar sleeve opening (17) of the component C (6), and the upper end of the guide spring (20) is fixed in a locking spring hole (18) of the spring guide bar sleeve (25) through a locking spring claw (26) and a locking spring screw (19).
  4. 4. A bow net pressure sensor mounted on a bow head of a spring type pantograph of a rail transit bus according to claim 3, wherein the spring guide rod seat (29) is mounted in a shell of the bow net pressure sensor (33) through a force guiding fixing seat (28) and forms a piston structure, a dust-proof plate (27) is arranged at a movable part, a rubber pad (22) is fixed at the lower end of the spring guide rod seat (29) through a screw (23), a dust-proof ring (21) is arranged, the rubber pad (22) is contacted with a pressure membrane (32) of the bow net pressure sensor (33), and the lower end of the force guiding spring (20) is sleeved at the upper end of the spring guide rod seat (29).
  5. 5. -A bow net pressure sensor mounted on a spring-like pantograph head of a rail transit bus according to claim 1, characterized in that the bow net pressure sensor (33) comprises a housing (41), the top plate of the housing (41) is provided with a core mounting screw (60), a pressure core (47) is fitted into the core mounting screw (60) from inside the housing and provided with a core sealing ring (42), the bottom of the housing (41) is provided with a sealing plate (49) and provided with a housing sealing ring (48); A boss (54) is arranged on one side of the shell (41), a concave table (55) is arranged in the boss (54), an optical flange (57) is arranged in the concave table (55) and a sealing gasket (56) is arranged in the concave table, the optical flange (57) is provided with an industrial optical plug (31), and an optical cable (30) is led out through the industrial optical plug (31); The lower part of the pressure core body (47) is provided with an optical alignment plug (45), the optical alignment plug (45) is connected with an optical plug (53) through an optical fiber jumper wire (46), and the optical plug (53) is sequentially connected with an industrial optical plug (31) and an optical cable (30) through an optical flange (57).
  6. 6. The bow net pressure sensor mounted on the head of a spring type pantograph of an electric bus in accordance with claim 1, wherein the lower end of the component a (4) is provided with a mounting seat (14), and the bottom of the housing of the bow net pressure sensor (33) is fixed on the mounting seat (14).
  7. 7. -Bow net pressure sensor mounted on a pantograph head of a rail transit bus spring class, according to any of claims 1 to 6, characterized in that the main spring (2) is a compression or tension spring (34) or a bent plate spring (35) or a straight plate spring (37).

Description

Bow net pressure sensor mounted on spring type pantograph bow of rail transit electric bus Technical Field The invention relates to a pantograph head of a rail transit vehicle, in particular to a pantograph net pressure sensor arranged on a spring type pantograph head of a rail transit electric bus. Background In recent years, the urban conversion rate is continuously improved, population flows to cities, urban population is suddenly increased, and urban traffic travel pressure is continuously increased. Compared with other urban transportation modes, the urban rail transit has highest efficiency in the public transportation mode, and is one of the best modes for solving the urban travel problem. The rail transit has the greatest advantage of large traffic volume, the transportation capacity is about seven to ten times that of automobiles and buses, convenience can be provided for residents, and secondly, the subway running speed is high, the running speed can reach 100km per hour, and more time is saved. Therefore, rail transit has become a main transportation means for people to travel, and the operation safety belt of the subway is severely challenged by crowd-intensive travel. In addition, although urban rail transit mileage is longer, lines are more and train number is more and frequency is more and more, people can go out conveniently, but operation and maintenance staff of rail transit are less and maintenance staff of rail transit are more and less, and an age structure is more and more aged, so that the operation and maintenance timeliness of the relation between the pantograph and the overhead contact system is worse and worse. Therefore, an effective, safe and intelligent real-time monitoring of the relationship between the pantograph and the catenary is highly desirable. At present, the existing technologies of measuring the pressure between a pantograph and a catenary mainly comprise an electrical measurement sensor technology, a visual imaging measurement technology and a fiber bragg grating sensing technology, and the defects of the technologies are as follows: The electric measuring sensor technology belongs to active contact measurement, has certain precision, but needs to do a large amount of insulation protection measures, so that the total weight of the system is very large, the original mechanical structure of the pantograph head of the pantograph is required to be modified, and roof sinking design is also required to be carried out for placing insulation protection equipment, so that the electric measuring sensor technology is mainly applied to a detection vehicle, and cannot be installed on an electric bus to measure pressure in real time. The visual imaging measurement technology belongs to non-contact measurement, and modeling is carried out on the non-mechanical relationship between the pantograph and the overhead contact system by using the principle of three-dimensional visual imaging after utilizing images shot by different types of industrial cameras fixed on the vehicle roof. Although the technology is commonly installed on a ground ferroelectric bus and a detection vehicle, the output delay is caused by the large calculated amount of the method, and meanwhile, the illumination light source of the system is also deeply interfered by the ambient light on a line and the background change of the picture caused by the environmental change in four seasons, so that the technology has certain technical difficulty in algorithm. Most importantly, visual imaging measurement techniques cannot apply any mechanical measurements between the pantograph and the catenary, such as pressure. The fiber bragg grating sensing technology also belongs to a passive sensing technology, is electromagnetic interference resistant, can be applied to environments such as electrostatic dust, inflammable and explosive, extreme temperature and the like, but is used as an arch net pressure sensor, has large packaging size, heavy weight, narrow range and easy brittle fracture, and is not pluggable in structure, namely, a shell is provided with a tail cable, so that the technology is very complex in engineering installation application and unsuitable for industrial installation popularization. Therefore, in order to avoid influencing the normal working relationship between pantograph and net during the operation of electric buses, on the electric buses of the high-speed rail or subway operated at present, it is highly desirable to install a passive detection type, smaller volume, lighter weight and larger range pantograph and net pressure sensor on the contact of the non-fluctuation pantograph structure, so as to monitor the mechanical relationship such as pressure between the pantograph and the catenary in real time. In view of this, the present invention has been made. Disclosure of Invention The invention aims to provide a bow net pressure sensor arranged on a spring type pantograph bow of an electric bus, so