JP2868982B2 - Current collector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a current collector used for railway vehicles.

[0002]

2. Description of the Related Art FIG. 4 shows one of the conventional current collectors.
It is a perspective view showing an example. In FIG. 4, 1 is a base frame of the current collector, 2 is a lower frame, 3 is an upper frame, 4 is a ceiling pipe, 5 is an oblique pipe, 6
Is a current collecting boat, and the current collecting device is constituted by these.

[0003] The operation of such a device will be described. Although not shown, the current collector is provided with a push-up force by the tension of a main spring in the underframe 1, and is provided with a predetermined push-up force. Makes contact with the overhead wire to collect electricity, and the vehicle runs.

[0004]

Since the current collector of the vehicle is disposed on the roof of the vehicle, the vehicle receives wind resistance due to the traveling wind when the vehicle travels, and simultaneously generates wind noise (aerodynamic noise). . The resistance and aerodynamic noise caused by the traveling wind
As the speed increases, the speed increases at an accelerated rate, which is a serious problem in a high-speed traveling vehicle.

[0005] The conventional current collector shown in FIG. 4 has a drawback in that a large number of frame pipes are combined to form a framework, so that high-speed traveling causes high air resistance and aerodynamic noise.

[0006]

SUMMARY OF THE INVENTION A current collector of the present invention solves the above-mentioned drawbacks of the conventional current collector, and will be described below.

The current collector according to the present invention includes a raising / lowering means for raising / lowering the current collecting boat, and a conductive means for guiding a current collected from the current collecting boat to the underframe. The first means for raising and lowering the range from the folding height to the minimum overhead wire height when traveling, and the second means for raising and lowering the range equal to or more than the minimum overhead wire height during travel I have.

As a first means of the raising and lowering means, a column outer cylinder of a second means having a cylindrical shape is vertically supported by pivotally supporting the upper ends of two parallel supporting rods. The lower ends of the rods are respectively attached to two main shafts supported by an underframe, and one of the main shafts is rotated by an ascending cylinder to ascend and descend while holding the column outer cylinder of the second means vertically. Let it. The height of the upper surface of the current collector boat when the ascending cylinder hits the upper limit stopper is set to be equal to or less than the minimum height of the overhead wire during traveling.

[0009] A second means of the raising and lowering means is that a cylindrical column inner cylinder having a central portion of a current collector boat attached to an upper end is inserted into a column outer cylinder vertically supported by the two support rods. The air cylinder is connected to the inner cylinder at the upper end, and the lower cylinder is connected to the outer cylinder at the lower end. The stroke in which the inner cylinder moves up and down in the outer cylinder is set so as to cover a range from the minimum height of the overhead wire during traveling to the maximum height of the overhead wire during traveling.

The support mechanism for vertical movement between the inner cylinder and the outer cylinder has a shape in which a ball spline bearing is fitted to the inner diameter of the outer cylinder, and the outer periphery of the inner cylinder has a vertical groove for a ball to be combined with the ball spline bearing. The inner cylinder is configured to be able to move up and down by rolling contact without rotating with respect to the outer cylinder.

Further, a spherical bearing is used for a connection portion between the inner cylinder and the outer cylinder of the air cylinder in the column, and the piston rod and the piston rod due to a parallelism error between the center axis of the inner cylinder and the center axis of the air cylinder. It prevents the interference between cylinders.

At the upper end of the inner cylinder, an inner cylinder is extended at the upper end to protect the inner cylinder surface when the inner cylinder extends from the outer cylinder. A cylindrical cover made of a conductive material, which partially encloses, is attached.

[0013] As the conductive means for guiding the current collected from the current collecting boat to the underframe, the current collecting current is a cylindrical cover made of a conductive material attached to the upper end of the support inner cylinder by a lead wire from the current collecting boat. Is transmitted to the support rod of the first means of the raising and lowering means from the lower end of the cover by a lead wire as a part of the energization path, and connects the lower end of the support rod to the underframe via the support rod. It is configured to lead to the underframe by the lead wire.

[0014]

The current collector of the present invention is constructed as described above, and its operation will be described below.

In the folded current collector, when compressed air is supplied to the ascending cylinder of the first means of the ascending / descending means and the air cylinder in the column of the second means, two parallel supporting rods are formed by the ascending cylinder. While rotating and holding the column vertically, it rises until it hits the upper limit stopper in the ascending cylinder. At the same time, the air cylinder in the column extends, and the inner cylinder is held by the ball spline bearing fitted to the inner surface of the outer cylinder, rises smoothly without rotating, and the current collector attached to the upper end of the inner cylinder The ascent stops when the overhead wire comes into contact with a predetermined lifting force.

Since the height of the upper surface of the current collector boat when the rising cylinder hits the upper limit stopper is lower than the minimum height of the overhead wire during traveling, the current collector boat does not contact the overhead wire in this state, As the cylinder extends, the current collector contacts the overhead wire.

When the vehicle travels in this state, the collecting current is transmitted from the collecting boat to the upper end of the column inner cylinder cover by a lead wire.
It is transmitted to the underframe via support rods and lead wires.

When the compressed air from the ascending cylinder and the air cylinder in the column is discharged when the current collector is lowered, the current collector is lowered by its own weight and folded.

As described above, when the vehicle is traveling, the only part that is vertically displaced following the variation in the height of the overhead wire is the part above the inner cylinder of the column, so that the mass is small and good followability can be obtained. .

The compressed air for operating the current collector is adjusted by the pneumatic control box to an air pressure to give a predetermined lifting force, and is supplied to the ascending cylinder and the air cylinder in the column. In the above description, the descent of the current collector is performed by the self-weight descent due to the discharge of the compressed air. However, the descent by the compressed air may be performed even when the descent is performed by making the air cylinder double-acting.

The current collector of the present invention has the above-described structure,
Since it has a function, it satisfies the function as a current collector of a real vehicle, and as its outer shape, the first means of the ascent / descent means is constituted by two support rods arranged in parallel as main members, The second means is covered with a cylindrical column outer cylinder supported by the two support rods and a cylindrical cover enclosing the column inner cylinder and the outer cylinder, so that the current collector has a standard operating height. When it stands up, the exterior looks like a collector boat supported by a single pillar when viewed from the front of the vehicle in the direction of travel, and the resistance and noise due to the traveling wind are significantly smaller. An object of the present invention is to provide a current collector which has solved the drawbacks of the current collector.

Further, since the present device pushes up the current collector boat by air pressure, the contact force between the current collector boat and the overhead wire can be increased or decreased by changing the pressure of the supplied compressed air, and the compressed air can be reduced. By increasing or decreasing the pressure in response to changes in ambient conditions such as running speed or entering a tunnel,
It is also possible to improve the followability.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. 1 to 3 show an embodiment of the apparatus of the present invention. FIG. 1 is a perspective view of an external appearance, FIG. 2 is a cross-sectional view showing a mechanism, and FIG. 3 is a cross-sectional view of FIG. .

1 to 3, 11 is a vehicle body, 12 is a support insulator of a current collector, 13 is an underframe, 14 is a windshield attached to the underframe, and 15 and 16 are parallel along the traveling direction of the vehicle. 2 placed in
The main shafts supported by the underframe are the support shafts 17 and 18
Is attached to each. Reference numeral 19 denotes an ascending cylinder, which is rotatably connected to a lever 17a having a piston shaft 19a attached to the main shaft 17. Reference numeral 20 denotes a column outer cylinder, which is connected to the upper ends of the support rods 15 and 16 and vertically supported. 21 is a ball spline bearing fitted to the inner diameter of the column outer cylinder, 22 is an inner cylinder inserted into the column outer cylinder, and the outer peripheral surface is a ball spline bearing
The ball spline shaft has a plurality of vertical grooves 22a that are in rolling contact with the 21 balls 21a. Reference numeral 23 denotes an air cylinder whose upper and lower ends are respectively connected to the inner cylinder 22 and the outer cylinder 20 via spherical bearings 24. Reference numeral 25 denotes a cylindrical cover made of a conductive material attached to the upper end of the inner cylinder 22.The inner diameter is larger than the outer cylinder outer diameter, and when folded, covers the inner cylinder outer periphery and the outer cylinder outer periphery. Protects the outer peripheral surface of the inner cylinder when raised. Reference numeral 26 denotes a boat support shaft having a current collecting boat 27 attached to an upper end thereof.
It is elastically supported on the upper end.

Reference numeral 29 denotes a pneumatic control box disposed in the vehicle cabin, which adjusts the pressure of compressed air from an air source (not shown), and rises by means of air pipes 31 and 31a via a solenoid valve 30 and a support insulator 12. The compressed air is supplied to and exhausted from the cylinder 19 and the air cylinder 23. Reference numeral 32 denotes an overhead wire, reference numeral 33 denotes a lead wire connecting the current collector boat 27 and the cover 25, reference numeral 34 denotes a lead wire connecting the lower end of the cover and the arm 20a attached to the support outer cylinder 20, and the support inner cylinder has a support outer cylinder. It is installed with enough slack to absorb the displacement when it rises. 20b is the lead wire cover attached to the support cylinder, 3
Reference numerals 5 and 36 denote lead wires.

Next, the function and operation of the current collector of the present invention will be described below.

When the air is not supplied from the air pipe 31, the support rods 15, 16 and the support inner cylinder 22 arranged in parallel are lowered by their own weight, and the current collector is in a folded state. In this state, when the solenoid valve 30 is excited and compressed air is supplied from the air pipe 31, the piston rod 19a of the ascending cylinder 19 retracts to rotate the support rods 15, 16, and the column outer cylinder 20 is held vertically. It rises as it is. At the same time, the piston rod 23a of the air cylinder 23 in the column also rises, and the column inner cylinder 22 and the current collecting boat 27 rise.

When the support rods 15, 16 hit an upper limit stopper (not shown) in the ascending cylinder 19, the ascent is stopped. Support rod
The height of the current collector boat upper surface when the 15 and 16 are rotated to the upper limit stopper is set to be equal to or less than the minimum height of the overhead line when traveling, so the upper surface of the current collector boat does not contact the overhead line at this time, but Since the inner cylinder 22 of the column rises due to the extension of the air cylinder 23, the current collection boat
27 rises and, when it comes into contact with the
The rise of 22 stops.

The space between the column outer cylinder 20 and the column inner cylinder 22 is held by the ball spline bearing 21 mounted in the column outer cylinder and the rolling contact of the surface of the column inner cylinder with the ball spline shaft. The inner cylinder 22 does not rotate,
The current collecting boat 27 rises smoothly while maintaining the correct direction with respect to the vehicle traveling direction. In addition, since the upper and lower ends of the air cylinder 23 in the column are connected to the outer cylinder 20 and the inner cylinder 22 through the spherical bearing 24, there is a parallelism error between the extension axis of the air cylinder 23 and the axis of the inner cylinder ascending. Even in this case, the air cylinder in the column is configured such that no burrs occur.

When the vehicle starts running in the above state, the piston rod 23a of the air cylinder in the column, the components above the inner cylinder 22, and the current collecting boat 27 are moved up and down in the height of the overhead wire, and the air cylinder in the column is moved. It moves up and down by the spring action of the compressed air in 23, and travels while following the overhead wire. Support rod 15,
16 turns to the upper limit stopper and the height of the current collector boat upper surface when the piston rod of the air cylinder in the support is at the lower limit is
Since the height is set below the minimum height of the overhead line during traveling, the mass that vertically displaces following the overhead line during traveling is always the piston rod.
Since only the mass above the inner cylinder 22 including 23a is included, the mass is small and good tracking characteristics can be obtained.

Since the column inner cylinder 22 to which the current collecting boat is attached as described above is supported from the outer cylinder 20 by a ball spline bearing, the vertical direction, the front-rear direction, and the current collecting boat acting from the overhead wire during traveling are controlled. The vehicle can travel while holding the current collector boat stably against vibration and impact in the direction of horizontal rotation. The current collected during the current collection travel is transmitted from the current collecting boat 27 to the upper end of the cover 25 made of a conductive material via the lead wire 33, and transmitted from the lower end of the cover 25 to the outer cylinder 20 via the lead wire 34. From the outer cylinder 20, lead wire 35, support rod 16, and lead wire 36
Is transmitted to the underframe 13. The energization path from the underframe to the vehicle body is the same as in the case of the conventional current collector.

Further, in this embodiment, the lifting cylinder 19 and the air cylinder 23 in the column are single-acting cylinders, and the current collector is folded down by its own weight.
Even if these cylinders are configured as double-acting cylinders to supply compressed air and lower the current collector, the function of the current collector of the present invention is the same.

Further, the current collecting device is provided with a current collecting boat by air pressure.
Since it is pushing up 27, it is possible to increase or decrease the contact force between the current collector boat 27 and the overhead wire 32 by changing the air pressure,
The followability can be improved by increasing / decreasing the supplied compressed air in accordance with a change in the surrounding conditions such as a traveling speed or entering a tunnel.

[0034]

As described above, the current collector of the present invention has the above-described structure and function, and has the following effects.

(1) As shown in FIG. 1, since it does not have a complicated frame structure like a conventional current collector and has the shape of a single support, the aerodynamic noise at the time of high-speed running is higher than that of the conventional product. This has a great effect on reduction of air resistance and air resistance.

(2) The current collecting boat, a column supporting the current collecting boat and having a cylindrical cover, and two parallel supporting rods which vertically move the column while holding the column vertically are used as current collecting members. Since the device is configured, it has a columnar shape as shown in FIG. 1, and it has become possible to provide a current collector with less air resistance and wind noise.

(3) By setting the rising height of the current collecting boat by the two parallel support rods to be equal to or less than the minimum height of the overhead wire during traveling,
The follow-up mass with respect to the overhead wire is smaller than only the mass above the support inner cylinder, and the followability is improved.

(4) The upper and lower ends of the air cylinder in the column are connected to the column outer cylinder and the inner cylinder by spherical bearings, thereby eliminating cylinder abutment due to a parallelism error between the axis of the column inner cylinder and the axis of the air cylinder. The frictional force when the inner cylinder moves up and down can be minimized.

(5) The cover of the pillar inner cylinder is made of a conductive material,
By using this as a part of the current supply path to the underframe for the collection current, the outer shape of the support portion can be made a simple shape without unnecessary protrusions.

(6) The contact pressure between the current collector boat and the overhead wire is increased or decreased by increasing or decreasing the air pressure supplied to the air cylinder in the column according to the change in the traveling speed of the vehicle or the surrounding conditions. Performance can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an appearance of an embodiment of a current collector of the present invention.

FIG. 2 is a sectional view showing the mechanism of FIG.

FIG. 3 is a sectional view taken in the direction of arrows A through A in FIG. 2;

FIG. 4 is a perspective view of the appearance of an example of a conventional current collector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base frame of current collector 2 Lower frame 3 Upper frame 4 Ceiling pipe 5 Diagonal pipe 6 Current collecting boat 11 Body 12 Support insulator of current collector 13 Base frame 14 Windshield attached to base frame 15, 16 Support rod 17 Main shaft 17a Lever 18 Main shaft 19 Ascending cylinder 19a Piston shaft 20 Post outer cylinder 20a Arm attached to post outer cylinder 20b Lead wire cover attached to post outer cylinder 21 Ball spline bearing 21a Ball of ball spline bearing 22 Post outer cylinder 22a Plural vertical grooves that roll into contact with the ball 23 Air cylinder 23a Air cylinder piston rod 24 Spherical bearing 25 Cylindrical cover made of conductive material 26 Boat support shaft 27 Current collector boat 28 Spring 29 Empty Pressure control box 30 Solenoid valve 31, 31a Air tube 32 Overhead wire 33, 34, 35, 36 Lead wire

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tetsuji Oshima 4-6-32 Higashikashigaya, Ebina-shi, Kanagawa Toyo Electric Manufacturing Co., Ltd. 4-6-32 Toyo Denki Mfg. Co., Sagami Plant (72) Inventor Saihei Moriya 4-6-32 Higashikashigaya, Ebina-shi, Kanagawa Prefecture Toyo Denki Mfg. Co., Ltd. Sagami Plant (72) Inventor Hiroyuki Arai 4-6-32 Higashi-Kashigaya, Ebina-shi, Kanagawa Prefecture Toyo Electric Manufacturing Co., Ltd. Sagami Works (56) References JP-A-57-119601 (JP, A) JP-A-5-176403 (JP, A JP-A-52-25957 (JP, A) JP-A-59-166063 (JP, A) JP-A-5-68304 (JP, A) JP-A-4-325384 (JP, A) -180101 (JP, U) (58 ) investigated the field (Int.Cl. ^6, DB name) B60L 5/00 - 5/42

Claims (4)

(57) [Claims] An ascending / descending means for ascending / descending a current collector boat;
Conductive means for guiding a collecting current from the current collecting boat to the underframe, wherein the ascending and descending means raises and lowers the current collecting boat in a range from a folding height to a minimum overhead line when traveling, and a first means,
The second that raises and lowers the range above the minimum height of the overhead wire when traveling
The first means comprises two support rods and an ascending cylinder arranged in parallel, and supports the second means at the upper ends of the two support rods so as to ascend and descend. The lower ends of the support rods are respectively attached to two main shafts supported by an underframe, and an ascending cylinder that rotates the support rod on one of the two main shafts to raise and lower the second means is provided. The second means comprises a cylindrical support outer cylinder vertically supported, a cylindrical inner cylinder inserted into the support outer cylinder and having a current collecting boat mounted on an upper end thereof, And a cylindrical cover attached to the upper end of the inner cylinder and having an inner diameter larger than the outer diameter of the column outer cylinder. A ball spline bearing is mounted on the inner diameter portion of the column outer cylinder. It has a shape with a vertical groove for a ball that engages with the bearing, and the inner cylinder rotates with respect to the support outer cylinder. It is configured to be able to move up and down by rolling contact without rolling, and that it is raised and lowered by an air cylinder that connects the column outer cylinder and the inner cylinder, and between the minimum height and the maximum height of the overhead wire The pushing force for pressing the current collector boat onto the overhead wire by the air cylinder of the second means is constant regardless of the overhead wire height, and the insulation distance between the lower portion of the underframe and the upper surface of the vehicle roof is ensured, and the vehicle further travels. A current collector, wherein the second means for directly receiving wind has a cylindrical shape for reducing aerodynamic noise. 2. The current collector according to claim 1, wherein the connecting portions of the inner air cylinder of the second means with the outer cylinder and the inner cylinder of the air cylinder are respectively connected using spherical bearings. 3. A conductive means for guiding a collecting current from a collecting boat to a frame, wherein a cover attached to an upper end of the inner cylinder is made of a conductive material, and a portion from the upper end to the lower end of the cover is a part of a conductive path. Item 2. The current collector according to Item 1. 4. The current collector according to claim 1, wherein the pressure of the compressed air supplied to the air cylinder in the support of the second means is increased or decreased by a pneumatic pressure control device in accordance with a change in vehicle running speed or ambient conditions.