JPH06113403A - Automatic multi-stage stretchable overall windbreak cover for pantograph - Google Patents

Abstract

PURPOSE:To prevent a current collection fault due to vibration of a pantograph framework caused by a wind pressure generated at the time of traveling an electric railcar at a high speed and a flying sound fault generated from the framework. CONSTITUTION:A two or three-stage stretchable hoods 31, 32 which are raised and lowered simultaneously upon rising and lowering of a pantograph are considered, and formed in a structure in which they are folded to one-stage when the pantograph is not in operation to remarkably alleviate a wind pressure fault. Further, its profile is so formed that front and rear ends are formed in a bow shape to branch the wind pressure generated at the time of traveling to right and left sides in a structure to eliminate influence to stably hold a pantograph's position. Thus, a current collection fault due to vibration of a pantograph framework caused by a wind pressure generated at the time of traveling with a conventional exposure type pantograph and a flying sound fault generated from the framework can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to “Pantograph current collector ring device” of Japanese Patent Application No. 2-214313 and “Pantograph framework structure” of the present application and the simultaneous application. B. Industrial application fields. This invention solves the windbreak countermeasure at the time of running of the pantograph for electric power collection which becomes a problem with the development of the electric railway which increases in speed in the future. B, conventional technology. Conventional panographs for ordinary trains run at low speed, so no measures were taken to protect them from windbreaks, but recently some Shinkansen bullet trains adopted this problem to match the height of the pantograph when it was folded. Although there is a trial of a fixed release rectangular barrier,
Not only do they not have what can be termed a pantograph full-blown windshield, but conversely this release barrier may even entrap the pantograph in turbulence during running. C, the problem that the invention is trying to solve. In the current collecting ring type pantograph that can withstand high speed running described in “Pantograph current collecting ring device” of application number 2-214313, which the present inventor has already applied for a patent, a conventional general “rubbing plate” is used. In place of the so-called friction plate type, a low-friction rotating disk system is adopted, but this system is excellent in high speed resistance and wear resistance, but there is concern about wind pressure stability, For practical use, a windproof cover for the entire pantograph is required. D, a means to solve the problem. Train speed is 30
If it is 0 km, it will be 83 m / s when converted to the wind speed received during traveling. This wind speed is the maximum wind speed of typhoon 60
It has a destructive power that greatly exceeds m / s. Therefore, the exposure of the pantograph also leads to the risk of destruction even in the conventional "rubbing plate" system, and it is necessary to cover the pantograph and exchange the wind pressure. For that purpose, it is preferable to wrap the pantograph in a bow-shaped cover. If you make it like a streamlined car, it is a Kamaboko type,
In this form, the force of pushing down the front surface of the cover is applied by the wind pressure during traveling, and the current collector is tilted forward.
On the other hand, if the bow type is used, the wind pressure is divided equally into the left and right, and the body does not lean forward. Another condition to be satisfied is that the pantograph must be folded and wrapped in the cover even when the pantograph is traveling with the use stopped. Therefore, the windproof cover must be a multi-stage stretch type. Moreover, the upper cover must move up and down together with the up and down movement of the pantograph, and must follow the inclination for accommodating the inclination of the overhead wire of the current collector. For this purpose, as described in the "pantograph frame structure" of the present application and the simultaneous patent application, it is necessary to have a frame having a mounting seat for the upper stage cover of the entire windbreak cover of the present invention. As a requirement for the mounting seat, it is necessary to connect an upper cover to the two axial ends of the top of the pantograph, and the load floating type pantograph conventionally used cannot meet this requirement. In addition, the conventional load-floating type pantograph depends not only on its own weight but also on the pulling force against the overhead wire, and only on the pulling force of the spring. As a result, the tension spring has to be strengthened, so that the push-up pressure contact reaction with respect to the overhead wire is slowed down. Here, in the "pantograph framework structure" relating to the present invention and the simultaneous application, since it is a true pantograph type load fixing system framework, it can endure an excessive load, and the mounting shaft end of the upper cover is Is also equipped. E, action. Here, the two-stage stretching type and the three-stage stretching type of the pantograph cover will be described. FIG. 1-5 is a two-stage stretch type, and FIG. 6-9 is a three-stage stretch type. Further, FIG. 1 is a plan view, FIGS. 2 and 6 are side sectional views in operation, FIGS. 3 and 7 are side sectional views in rest, and FIGS. 4 and 8 are front sectional views in operation. 5 and 9 are front views at rest. First, the two-stage stretching type will be described. In the figure, is the intersection of the lower frame of the pantograph framework, is the apex of the upper frame, is the small post, is the second apex on the small post, and is the assembly mounted on it. It is an electric ring.
Instead of this collector ring, a conventional "rubbing plate" may be used. Next, ▲ 31 ▼ is an upper cover that moves up and down to protect against wind.
Reference numeral 32 is a fixed outer jacket type lower cover. The operation will be described with reference to FIG. 1-5. Upper cover (31)
Is fixed to the two shaft ends of the pantograph frame with the automatic restoring property of the upper part of the pantograph frame, and can be moved up and down as the frame moves up and down, and the current collector ( The current collector ring or the rubbing plate may be used) Even when the inclination of the overhead line is inclined, it is adapted by the swing displacement of the small strut. Next, when the pantograph is stopped, the upper cover (31) is fixed to the lower cover (32).
Hide inside ▼. Both the upper and lower covers form a bow-shaped front and rear with respect to the traveling direction of the train, and divide the running wind pressure of the train to the left and right to prevent the tip of the upper cover (31) from tilting forward. The upper surface of the upper cover (31) is covered with a windbreak plate except for the current collecting surface of the current collector. Although a step is provided on this surface in the figure, it may be a flat boat shape. Next, an example of a three-stage stretchable cover will be described with reference to FIG. The advantage of this method is that the top cover (33) is much smaller and lighter than the previous example, so it has excellent adaptability to adapt to the gradient of the overhead line. In the figure, (33) is the top cover,
Reference numeral 35 denotes a lower cover that serves as a fixed mantle, and 34 denotes a middle cover intermediate between the two, and these three members form three-stage stretching of inside and outside. The middle cover (34) is guided by the movement of the shaft ends of the joints (36) at the left and right sides of the diamond-shaped frame of the pantograph that moves up and down, and the long holes are formed at the corresponding positions inside the middle cover (34). Horizontal guide rail ▲ 37 ▼
Install in 4 places, and move the middle cover (34) up and down according to the vertical movement of the frame. At the same time, the vertical guide rail ▲ 38 with an elongated hole that guides both ends of the cross shaft of the lower frame so that the movement always matches the displacement of the vertical center line of the frame and can receive the vertical movement. Two points of ▼ are provided at the lower end inside the center of the middle cover. With this method, if we consider the rest position of the pantograph as a reference, at the time of operation,
Center stage cover (34), top cover (33)
The ▼ and the base plate of the frame will move upward and downward, but in reality, the top cover ▲ 33 ▼ is further expanded by the pantograph effect against the height extension of the middle cover ▲ 34 ▼. It will be expanded upward and levitated, and it will be stretched in three stages. The upper surface of the middle cover (34) is covered with a flat plate having a window hole corresponding to the plane of the uppermost cover (35). The feature of the three-stage stretching is that the mass of the uppermost cover 33 can be reduced, and as a result, the adaptability to the gradient of the overhead wire of the current collector is excellent. It should be noted that, when the pantograph is out of service, the three-stage covers are piled up and fit into a low ship shape as shown in FIGS. F, Example. The present inventor manufactured a 1 / 10-scale two-stage stretched model of the real thing, and confirmed that all of them worked as designed as a result of driving with a small motor. However, the actual product has not been produced. The effect of invention. The effects which can be given when the present invention is carried out are listed below. 1. Higher train speed cannot be achieved without streamlining the pantograph at the same time as streamlining the car body. 2. The windproof huntagraph can secure stable power reception by evading the vibration of the pantograph due to the intense wind pressure generated when the train runs at high speed, regardless of whether the current collector is a current collector ring system or a rubbing plate system. 3. The windbreak pantograph is released from the wire separation phenomenon that occurs due to the abnormal vibration of the current collector, reducing the sparks and extending the life of the overhead wire. 4. The windproof pantograph not only protects against wind pressure, but also protects against rain, snow, freezing and corrosion.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1-5 is a two-stage stretchable windproof cover of the present invention,
Fig. 9 shows a three-stage stretching type. Figure 1 of which is a plan view,
Figures 2 and 6 are side sectional views during operation, Figures 3 and 7 are side sectional views during rest, Figures 4 and 8 are front sectional views during operation, and Figures 5 and 9 are front views during rest. " In the figure, the crossing point of the lower frame, is the apex of the upper frame, is a small column, is a current collector, is the second apex, 31 is the upper cover, 32 is the lower cover, and 33 is the uppermost. Cover, (34) is the middle cover, (35) is the lower cover (3
Step extension), (36) is the left and right joints of the frame, (37) is a horizontal guide rail for lifting the middle cover, and (38) is a vertical stabilizing vertical guide rail for the middle cover.

Claims (1)

[Claims] 1. A small prop is erected above the apexes of the upper and lower frames of the pantograph elevating frame, and a second apex is provided, and the opposing points are connected by two horizontal axes. The upper end cover (31) part of all the windproof covers of the pantograph is attached with the shaft end as the fixing point, and the upper half part of the pantograph frame is covered except the collector surface mounted above the second apex line. Since the top of the pantograph framework has a swingable variable transfer structure with resilience, the current collector and the upper cover (31) part mounted on this part slightly move back and forth in response to changes in the gradient of the overhead wire. Allow to tilt. The entire pantograph framework other than the exposed collector surface of the current collector is covered with a cover that is divided into two upper and lower stages. The lower cover ▲ 32 is fixed as a fixed outer cover on the pantograph base plate, and the pantograph is folded. At that time, it becomes a jacket of the upper cover (31), and when it is extended, only the upper cover (31) has a two-stage structure in which it automatically extends following the up and down movement of the pantograph. An automatic multi-stage pantograph (2 with a bow-shaped front and rear ends of the entire cover to cut off the influence of wind pressure on the pantograph while the train is running
Step) Stretchable windproof cover. 2. In an automatic multi-stage (3-stage) stretchable windproof cover with a structure similar to the previous paragraph, the uppermost cover (33) is kept in the minimum necessary area, and a new intermediate between the uppermost cover (33) and the lower cover (35) is added. Further, a middle cover (34) is provided so that when the covers are moved up and down, they overlap each other internally and externally. The top of the middle cover (34) is the top cover (33)
Windproof as a plane with an opening that matches the outer circumference of the area of ▼. The middle cover (34) is lifted up and down by connecting shafts (3) at the front and rear of the diamond-shaped left and right sides of the pantograph lifting frame.
6 ▼ Horizontally slidably supported at both ends to interlock with the vertical movement of the pantograph, and the vertical movement of the pantograph always matches the displacement of the vertical center line of the pantograph.
A pantograph automatic multi-stage (three-stage) stretch-type full windbreak cover with a structure in which both ends of the shaft at the center intersection of the lower frame of the frame are used as guide ends to slide up and down.