JPH06105404A - Framework structure for pantograph - Google Patents

Abstract

PURPOSE:To provide a framework structure of a pantograph in which a lifting force can be arbitrarily adjusted without considerable influence of a mass, a lifting force of a current collector. CONSTITUTION:The framework structure for a pantograph has the same structure as that of a general pantograph as shown. A pair of opposed frameworks have two intersections 4, 1 at an intermediate between a top end and a frame. One 2 of legs astride at the ground side is fixed, and the other end 3 depends upon a framework elevator balanced with a coiled spring 11. Accordingly, a half of a load of the pantograph is loaded by a fixed end, a vertical component of the load is removed from the load of the pantograph even at the other movable end, and the framework of the pantograph which can endure against a large load is provided. Thus, a conventional one must reduce a mass of the framework in order to alleviate peeling of a trolley wire, but this pantograph can endure against the large load, and hence 'a current collecting ring of a pantograph' of a peeling remedy unit and a soundproof cover can be also loaded to the framework.

Description

DETAILED DESCRIPTION OF THE INVENTION B. Industrial application fields. INDUSTRIAL APPLICABILITY The present invention can be widely used in the electric railway field in place of the conventional pantograph, and in particular, the patent application number 2 already filed by the present inventor.
This is suitable for mounting the “pantograph current collector” of No. 214313. B, conventional technology. Most conventional pantographs of electric railways in Japan have the form shown in FIG. 1A.
Further, the lower frame crossing type of the Shinkansen shown in FIG. 1B is merely intended to reduce the overall weight, and the principle is exactly the same as that of A. Originally, the name of this pantograph is considered to be so called because its shape resembles a pantograph, which is a retractable mapper, but the pantographs of these trains have expansion and contraction as a pantograph. There is no cross point on the lower frame that can fulfill its function, and the elevation of the apex of the upper frame can be raised by a spring hung on the tip of the arm extended from the fulcrum of the lower frame. Therefore, in order to improve the resilience when the pantograph jumps at the hard point of the overhead wire, it is necessary to extremely reduce the mass of the rubbing plate, the boat to which it is attached, and the entire pantograph framework, but the current technology is It is judged to be in that limit. C, the problem that the invention is trying to solve. 1. 1. Pantograph framework structure that is not significantly affected by the framework, current collector mass and push-up force A method that allows arbitrary adjustment of the push-up force of the pantograph. There are two problems. D, a means to solve the problem. And ho, action. As described above, the main purpose of the present invention is to mount the "pantograph current collecting ring device", but it can be applied to a conventional rubbing plate type current collector very advantageously. FIG. 1C shows the framework structure of the present invention in operation when the current collecting ring system is installed, and the portion drawn with a dotted line is the figure at rest when folded.
Further, FIG. 1D shows a change in the ratio of the vertical load and the horizontal load applied to the horizontal slide fulcrum in each of the operation and the rest, and the areas of both of the shaded areas are the same.
In the conventional type shown in FIGS. 1A and 1B, the push-up force of the pantograph is achieved by exclusively applying a spring to the extended arm portion of the fulcrum at the lower end of the frame and pulling it. That is, the entire load of the pantograph including the pushing force against the overhead wire is supported by this spring as a floating load. However, in the method of the present invention, there is no load floating, and as shown in Fig. D, most of the load including the pushing force against the overhead wire is supported as a vertical load on the substrate, and the remaining horizontal load component force is supported. It will be sufficient, and only the horizontal thrust will be a problem. That is, in Fig. D, when the intersection of the lower frame is the fixed fulcrum and the horizontal fulcrum is the horizontal slide fulcrum, the vertical load and horizontal load distribution ratios during operation and at rest are as shown in the figure. A large amount of thrust is required to get up, but only a small amount of horizontal thrust is enough if it is put into operation. The push-up force on the overhead line is also satisfied by applying only the horizontal component force. And, its value is small compared to the horizontal thrust to support the weight of the frame. As described above, according to the method of the present invention, the mass and the pushing force of the entire pantograph are not affected by the floating load, the vertical load component can be ignored, and only the horizontal load component force is involved. As a result, it is possible to equip a large one in place of the conventional rubbing plate. Figures 2, 3 and 4 show the frame of the present invention in which the current collecting ring of the previously filed application is installed. Figure 2 shows the side view during operation, Figure 3 shows the side view during rest, and Figure 4 shows the side view during operation. It is a front view. In the figure, the top end of a short pillar ′ that can be tilted to the left and right, which is erected above the apex of the frame, serves as a mounting seat for the current collector, and a second apex is provided directly below the abutment, and from this point, the right and left sides are of equal length. By connecting the short pieces', and by connecting the short pieces' connected to their tips to the left and right upper arm pieces of the upper frame, the variable small parallelograms are provided on both sides of the strut 'here. Let it form. However, the apex 'and its opposite point are connected by a coil spring (10), (10)' of equal tension. This allows the post 'to tilt as the current collector tilts and moves, as shown in FIG. 1C'. Also, since all these springs are of equal tension, the strut 'will return to the vertical position when the external force is removed. Next, the slide mechanism of the horizontal slide fulcrum 'corresponding to the horizontal component force will be described in detail with reference to the plan view of FIG. 5 and the side view of FIG. In both figures, a part thereof is shown as a cross section. Horizontal slide fulcrum '
The support shaft, the coil and spring (11) (11) ', and the spindle (12) (12)' for pushing and pulling this.
Inside a box mold (13) (13) ', and at the tip of which a worm wheel (14) (14)' through which a spindle (12) (12) 'is inserted, and a worm that drives this. It is connected to a worm speed reducer that houses the gear (15) (15) '. This pair of warm guys ▲
15 (15) 'is driven by one motor (16) electrically insulated from the frame. Spindle ▲
12 ▼ ▲ 12 ▼ ′ has a roller-mounted arm ▲ 17 ▼ protruding laterally from the base end, a corresponding limit switch ▲ 18 ▼, and an operating limit switch ▲ 19 ▼. The latter operates in conjunction with the limit switch slide mechanism (20) and a geared motor (21) electrically driven to drive the limit switch sliding mechanism (20).
By ▼, the spindle ▲ 12 ▼ ▲ 12 ▼ 'at the point where the framework is pushed up to the operating position in which the pushing force for the overhead wire is added.
Stop the movement of. ▲ 22 ▼ is a power source for these motors, ▲ 23 ▼ is a changeover switch for driving the motor ▲ 16 ▼ forward and reverse, and ▲ 24 ▼ is a limit switch so that the pushing force at the time of operation can be arbitrarily set. 19 is a changeover switch for enabling positioning. ▲ 25
▼ is a piezoelectric element capable of transmitting a pushing force when the push spring ▲ 11 is in operation, and ▲ 26 is a voltage generated at the time of compression.
This is a voltmeter with a g scale. In addition, (27) and (28) are an indication scale and a pointer of the pressure of the coil and spring (11). It should be noted that these switches can be made electromagnetic and the piezoelectric pressure gauge can also be remotely operated as a remote instruction. Next, tension coil springs attached to the diagonal lines of the small parallelograms provided on both the left and right sides of the vertical support column'10 '
When the frame is in the stopped state, since the springs (10) and (10) 'are extended as shown in FIG. 3, the shocks when the frame descends are buffered, and 0 ′ ′ is raised in the opposite direction. When it rises, it assists the horizontal thrust to facilitate the lifting of the frame. F, Example. The inventor of the present invention produced a 1/10 production model, and the following is an analogy of the case of implementation. The weight of the conventional pantograph frame is now 150 kg, the current collector (boat and rubbing plate) is 30 kg, and the pushing force against the overhead wire is 5 k.
g, the required push-up load on one leg is 46.25.
It is kg. Next, the weight of the pantograph frame according to the present invention is increased by 50% to make the frame sturdy.
5kg, the current collector ring system has been adopted to double the current to 60k
g, if the pushing force is 5 kg of that side, the load hanging on one leg is 72.5 kg, but as the horizontal load component force, as shown in Fig. 1D, the leg opening angle is 45 °. The horizontal load is 36.25 kg because it becomes 1/2 when it is half. In this case, if the conventional rubbing plate method is used, it is only 32.5 kg.
It is sufficient to bear the horizontal thrust of the above, and a spring much lighter than the conventional pantograph can stably support from the horizontal direction. In addition, since this method has a pantograph function, it is more effective than the vertical movement width of the current collector.
The horizontal slide width can be made small and the spring response is good. Next, the push-up force of the current collector against the overhead wire is generally 4.5-5.5 kg in Japan. In the conventional pantograph, it was difficult to adjust the tension spring for levitation, but in the method of the present invention, by changing the position of the limit switch by remote operation, it is possible to easily adjust it freely and lower the frame. In that case, simply changing the switch is sufficient. In the conventional one,
At the time of descent, it was necessary to use an air cylinder to remove the spring for levitation and to borrow the aid of an air damper to cushion the descent shock. The effect of invention. The present invention can have the following effects. 1. While the conventional pantograph relies on the levitation spring for all of its levitation force, in the method of the present invention, most of the load is grounded and the rest is horizontally divided, so it is slightly horizontal. The thrust can support the pantograph.
This is a more effective large current collector (current collecting ring method)
It is possible to install. 2. Left and right equilibrium springs installed on the top and bottom of this pantograph
When the frame descends, it exerts a cushioning force against the shock,
When ascending, it becomes an auxiliary force of horizontal thrust. Conventional pantographs often require the assistance of an air cylinder in this case. 3. The push-up force on the overhead wire of the pantograph and the change of the push-up force can be easily achieved by remote control in the method of the present invention. This is difficult with conventional methods.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A and FIG. 1B are conventional pantographs, C is a side view of the pantograph of the present invention with a current collector ring in operation and at rest, and D is a horizontal view of the operation. Fig. 2 is an analysis view of the load applied to the slide fulcrum, Fig. 2 is a side view of the framework of the present invention equipped with a current collector ring in operation, Fig. 3 is a view at rest, Fig. 4 is a front view, and Fig. 5 is FIG. 6 is a plan view of the horizontal slide mechanism, and FIG. 6 is a side view thereof. In the figure, lower frame crossing points, fixed type rotation fulcrums, horizontal slide fulcrums, vertices, vertical struts, current collectors, second vertices, short pieces, (10) tension coil springs,
▲ 11 ▼ Push / pull coil spring, ▲ 12 ▼ Spindle, ▲ 13 ▼ Box form, ▲ 14 ▼ Worm wheel, ▲
15 ▼ worm gear, ▲ 16 ▼ motor, ▲ 17 ▼ arm with roller, ▲ 18 ▼ rest limit switch, ▲ 19 ▼ operating limit switch, ▲ 20 ▼ limit switch slide mechanism, ▲ 21 ▼ Geared ・
Motor, ▲ 22 ▼ power supply, ▲ 23 ▼ forward / reverse drive changeover switch, ▲ 24 ▼ positioning changeover switch, ▲ 25 ▼
Piezoelectric element, ▲ 26 ▼ Voltmeter, ▲ 27 ▼ Pressure indicator scale, ▲
28 ▼ Guidelines.

─────────────────────────────────────────────────── ───
[Procedure amendment] [Submission date] August 25, 1993 [Procedure amendment 2] [Document name for amendment] Detailed description [Item name for amendment] Brief explanation of drawings [Amendment method] Change [Amendment content] [ BRIEF DESCRIPTION OF THE DRAWINGS [FIG. 1] A diagram showing the operating principle of a pantograph, showing A, B,
This is illustrated in each drawing of C, D, and E. "A" is a conventional pantograph framework diagram, "B" is a bullet train pantograph framework diagram, and "C" is a pantograph framework diagram of the present invention. It is mounted, and the solid line part is a diagram of the framework at the time of operation, and the dotted line part is a diagram showing the image at rest. [D] In the diagram of the leg portion of the framework of the present invention, the load applied to the floating leg at the time of operation shown by the solid line and at the time of rest shown by the dotted line is shown by the shaded portion of the rectangle, and the vertical component force and the horizontal component force of each are shown. It is a figure which shows that a ratio differs. “E” is a diagram showing that the coil spring acts and retains a restoring force when the structure of the top portion of the example diagram “C” is inclined. FIG. 2 is a side view of the pantograph framework of the present invention equipped with a collector ring device in operation. FIG. 3 is a side view of the same at rest. FIG. 4 is a front view of the same during operation. FIG. 5 is a plan view of the slide mechanism showing a state in which the horizontal slide mechanism is partially broken and is normally and reversely rotated. FIG. 6 is a side view thereof. [Explanation of reference signs] 1 Intersection of lower frame 2 Fixed rotation fulcrum 3 Horizontal slide fulcrum 4 Apex 5 Vertical support 6 Current collecting ring device 7 Second apex 8 Short small piece 9 Short small piece 10 Tension coil / spring 11 Push and pull Coil spring 12 Spindle 13 Box form 14 Worm wheel 15 Worm gear 16 Motor 17 Arm with roller 18 Limit switch for rest 19 Limit switch for operation 20 Limit switch slide mechanism 21 Geared motor 22 power supply 23 forward / reverse drive switching switch 24 positioning switching switch 25 piezoelectric element 26 voltmeter 27 pressure indicator scale 28 pointer [procedure correction 3] [correction target document name] drawing [correction target item name] all drawings [correction method] change [Correction] [Fig. 1] [Figure 3] [Figure 4] [Fig. 2] [Figure 5] [Figure 6]

Claims (1)

[Claims] 1. Similar to a pantograph (expandable mapper), in a pair of elastic frameworks that can be expanded and contracted up and down in a diamond shape and are arranged side by side in the front and rear direction, one extension leg of the intersection point 'of the lower frame The tip of the fixed type rotation fulcrum ′, the tips of the other extension legs the horizontal slide fulcrum ′, and by sliding this fulcrum, it becomes the apex of the diamond-shaped frame ′ and it can move up and down. From the apex 1 ', a small pillar ′ that can be freely tilted to the left and right in the vertical direction is erected, the top end of which serves as a mounting seat for the current collector, and the second apex ′ directly underneath it to the left and right sides, etc. Long short pieces'
Of the vertical columns', the short pieces', 'and the upper frame. A variable small parallelogram is formed on both the left and right sides of the vertical column 'by using a part of both left and right upper arm pieces, and a coil spring of equal tension is provided between the first apex' and its opposing point. (10) A pantograph framework structure connected by (10) '. 2. In order to slide the horizontal slide fulcrum 'described in the preceding paragraph, a coil frame (11) (11)' for pushing and pulling is placed in a box form (13) (13) 'for storing it.
Further, a worm in a worm reducer including a spindle (push-pull screw rod) (12) (12) 'with a spring tray at the tip of the spindle and a worm wheel (14) (14)' for penetrating the spindle. Gear ▲ 15 ▼ ▲ 15 ▼ ′
And a lifting device for a diamond-shaped frame, which comprises a motor (16) electrically insulated from other parts, which is driven by skewering these worm gears (15) (15) ', and push-up force of the pantograph. To adjust the
The movable limit switch mechanism (20) for determining the stop position of the spindle (12) (12) 'and the position thereof are adjusted and set so that the position of the spring (11) (11)' can be adjusted and set. The pantograph frame structure according to the first item, which comprises a geared motor (21) electrically insulated from the others for the purpose of: