JPH10136504A - Current boat support device - Google Patents

Abstract

(57) [Problem] To provide a boat support device which is lightweight and has a simple structure as a current collector boat support device for supporting a current collector boat at one central position. A boat support rod is supported by a parallel link from a column rotatably connected to upper ends of two upper frames (an upper frame and a balance rod) of a single arm type pantograph, and one center is supported on the upper end thereof. The current collector boat is mounted on the support column, and the boat support rod is elastically supported by a spring interposed between the spring receiver mounted on the support and the parallel link.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a current collector support device for a pantograph for a railway vehicle.

[0002]

2. Description of the Related Art FIG. 2 is a mechanical diagram of an example of a conventional single-arm type pantograph, and FIG. 3 is a sectional view of a current collecting boat support device. In FIG. 2, 1 is an underframe of the current collector, 2 and 3 are main shafts supported by the underframe, 4 and 5 are lower frames having lower ends fixed to the main shafts 2 and 3, respectively, and 6 is a point near the lower end. The upper frame 6a is rotatably supported by the lower frame 4 and the lower end 6b is rotatably supported by the lower frame 5, and the lower end 7a is rotatably supported by the lower frame 4.
Is an upper frame rotatably supported near the upper end of the upper frame. Reference numeral 8 denotes a current collecting boat support device, and its outer cylinder 8a is rotatably connected to the upper end 6c of the upper frame 6 and the upper end 7b of the upper frame 7 and is supported vertically. The lengths of the lower frames 4, 5 and the upper frames 6, 7 and the positions of the connection points are appropriately selected, so that the outer cylinder 8a of the boat support device always keeps almost vertical even if the height of the pantograph changes. It keeps it up and down. Reference numeral 9 denotes a current collector boat supported at one central portion, which is attached to the upper end of the boat support shaft 8c. 10 indicates an overhead line.

FIG. 3 is a cross-sectional view of the boat support device 8, in which an outer ring 8b of a ball spline bearing is mounted on the inner surface of an outer cylinder 8a, and the outer ring has an outer periphery in the axial direction for ball rolling of the ball spline. A boat support shaft 8c having a groove 8d and formed in a ball spline shaft shape is loosely engaged. Boat support shaft 8c
A spring 8e is arranged at the lower part of the boat, and elastically supports a boat support shaft 8c to which a current collecting boat 9 is attached at the upper end from the outer cylinder 8a.

To explain the operation of the present apparatus, although a pantograph is not shown, a lifting force is given by the tension of the main spring in the underframe 1, and the upper surface of the current collecting boat 9 contacts the overhead wire with a predetermined lifting force. And the vehicle runs. Since the ball spline is used for the current collector boat support device, even if the height of the overhead line changes while the vehicle is running, the current collector boat moves smoothly up and down without following the horizontal line without rotating in the horizontal plane And run.

[0005]

As described above, in the conventional pantograph, the ball spline bearing is used so that the current collecting boat can move smoothly in the vertical direction without rotating in the horizontal plane while the vehicle is running. However, the ball spline bearing has a disadvantage that it is heavy and its structure is rather complicated.

[0006]

SUMMARY OF THE INVENTION A current-carrying boat support device of the present invention solves the drawbacks of the conventional support device and will be described below. The function of the current collecting boat support device is to hold the current collecting boat horizontally, and to support the current collecting boat so as not to rotate in the horizontal direction and to move smoothly in the vertical direction. In the current collector boat support device of the present invention, a post is attached to the upper end 6c of the upper frame 6 and the upper end 7b of the upper frame 7 instead of the conventional boat support device outer cylinder 8a, and the upper and lower sides of the upper column 6 are separated from each other. One end of each of two equal-length links is rotatably attached to a point, and the other end of each of the two links is rotated to two vertically separated points on a boat support bar parallel to the column. Attach freely and construct a parallelogram link with a support column and two equal length links and a boat support rod on four sides to form a current collector boat and the two equal length links with the vertical movement of the boat support rod. The vertical rotation is elastically supported from the support by a spring. A current collecting boat is provided at the upper end of the boat supporting rod.

The current collector boat support device of the present invention is configured as described above, and its operation will be described below. When the upper surface of the current collector boat is running in contact with the overhead wire, the boat support rod moves up and down while maintaining the vertical position by the rotation of the two equal-length links with respect to the height displacement of the overhead wire. The boat support rod moves up and down following the overhead wire while applying an appropriate pressing force to the current collector boat by the elasticity of a spring elastically supporting the isometric link from the support column. In addition, regarding the horizontal rotation of the current collector boat by sliding with the overhead wire, the connection between the support and the upper frame and the connection between the support and the two equal length links and the boat support rods are all up and down by pins. The current collector boat is not rotatable in the horizontal plane because it is rotatably connected.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a mechanism diagram showing an embodiment of the present invention. In FIG. 1, parts having the same reference numerals or parts having the same functions as those shown in FIGS. 2 and 3 are shown. In FIG.
It is omitted because it is the same as. 11 is a support, upper frames 6 and 6c
At one point, one end of the link 12 is rotatably connected to the upper frame 7 and 7b at a point 11b.
One end of a link 13 having the same length as the link 12 is rotatably connected to a point 11b. The other ends of the links 12 and 13 are rotatably connected to the respective boat support rods 14 at a point 14a.
It forms a parallelogram link having the support 11, the links 12, 13 and the boat support rod 14 as four sides. A current collecting boat 9 is provided at the upper end of the boat support bar.

In FIG. 1, reference numeral 11c denotes a spring receiver fixed to a support 11 between the spring receiver 11c and the link 12 and a spring receiver.
Springs 15 and 16 are disposed between the link 11c and the link 13, respectively, to elastically support the vertical displacement of the boat support rod 14. This device is configured as described above, and its operation will be described.

When the train travels, the current collecting boat 9 and the boat support rod 14 are vertically displaced due to fluctuations in the overhead line height.
Is elastically supported on the support column 11 via springs 15 and 16, and since the links 12 and 13 are equal-length links, they maintain the vertical position. Moving.

The connection points 11a, 11b, 14a and 14b are rotatable only in the vertical direction and are restrained in the horizontal direction (horizontal rotation direction). It does not turn inside, and the current collector boat is always facing the front of the vehicle. This device is characterized by comprising a parallelogram-shaped link and a spring as described above.The current collector boat moves up and down smoothly while keeping the upper surface of the collector boat horizontal, and the collector boat turns in a horizontal plane. It has a mechanism to support without. An object of the present invention is to provide a current collector boat support device that is simple and lightweight.

[0012]

The current collector boat support device of the present invention has the above-described configuration and function, and is characterized in that a link mechanism is used as a mechanism for supporting the current collector boat at one central portion.
The practical effect of the current collector boat support device, which is lightweight and simple in structure, is extremely large.

[Brief description of the drawings]

FIG. 1 is a mechanism diagram showing an embodiment of a current collector boat support device of the present invention.

FIG. 2 is a diagram showing a conventional single arm pantograph;
FIG. 4 is an example mechanism diagram.

FIG. 3 is a view showing an end face of the current collecting boat support device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Underframe 2 Main shaft 3 Main shaft 4 Lower frame 5 Lower frame 6 Upper frame 7 Upper frame 8 Current collector boat support device 9 Current collector boat 11 Prop 12 Link 13 Link 14 Boat support rod 15 Spring 16 Spring

Claims (1)

[Claims] 1. A single-arm type pantograph, comprising a column (11) supported from the upper ends of two upper frames (6, 7) and rising and falling while maintaining the vertical position even when the height of the pantograph changes. 11 The part away from the upper and lower ends
One end of a link 12 is connected to 11a and 11b, and one end of a link 13 provided in parallel with the link 12 is rotatably connected to each other. 11 is connected to upper and lower pedestals 14a, 14b on a boat support rod 14 having a current collecting boat at the upper end arranged in parallel with 11 so that the column 11, the links 12, 13 and the boat support rod 14 are connected to four sides. A current collector boat comprising a parallelogram link, wherein the rotation of the link 12 and the link 13 attached to the support 11 around the respective portions 11a and 11b is elastically supported by the support 11 by a spring. Supporting device.