JPH03164002A - Motor current collector - Google Patents

Abstract

PURPOSE:To reduce the number of parts in a current collecting mechanism and to simplify the structure by detecting vertical displacement of a trolley wire during travel of a train, driving a direct drive motor, and ascending or descending a collector shoe. CONSTITUTION:A direct drive motor 21 moves a collector shoe 26 up and down through a coupling link 17. The upper face of the collector shoe 26 contacts with a trolley wire 12. The collector shoe 26 follows ascending motion of the trolley wire 12, and when a limit is exceeded an ascend detecting switch 30 functions to start the direct drive motor 21 thus ascending the collector shoe 26. The direct drive motor 21 stops upon turn OFF of the ascend detection switch 30. Upon descent of the trolley wire 12, a descent detection switch 31 is turned ON to start the direct drive motor 21 so as to descend the collector shoe 26, and subsequently the descent detection switch 31 is turned OFF to stop the direct drive motor 21. By such arrangement, a cylinder unit, air piping, a solenoid valve, and the like can be eliminated, resulting in the simplification of the structure.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a current collector for a railway vehicle.

[Conventional technology]

The mechanism of a general current collector conventionally used in railway vehicles is shown in FIG.

In Figure 3, 1 is the lower frame, 2 is the upper frame, 3 is the ceiling pipe, 4
5 is the main shaft fixed to the lower frame 1, and 5 is the main shaft 41. 6 is a main spring that applies upward force to the current collector; 7 is a lowering cylinder lever fixed to the main shaft 4; 8 is a spring lever fixed to the main shaft 4;
The lowering cylinder is connected to an air pipe (not shown), and by sending compressed air from the vehicle body side, the piston rod of the lowering cylinder comes out and pushes the lowering cylinder lever 7 to fold the current collector. Reference numeral 9 denotes a collector boat, 10 a support spring for the collector boat 9, and 11 a support device for the collector boat 9, which is supported from the upper frame 2 so that the upper surface of the collector boat support device 1 remains horizontal. There is. Reference numeral 12 denotes a contact wire, and the upper surface of the current collector boat 9 slides into contact with the contact wire to collect current.

The operation of the apparatus constructed as described above will be explained below.

A predetermined upward force is applied to the current collector by the main spring 6, and the upper surface of the current collector boat 9 contacts the contact wire 12 to collect current while the boat is running. The vertical displacement of the contact wire 12 during running is followed by the deflection of the support spring 10, and current is collected.

When lowering the pantograph, compressed air is sent to the lowering cylinder 8, the current collector is folded by pressing the lowering cylinder lever 7, and the ceiling pipe 3 is locked with a locking key (not shown) installed at the base. to hold the current collector in the folded position. By releasing the locking key using an electromagnetic coil or an air cylinder, the current collector is activated by the main spring 6.
It rises due to the spring force of.

[Problem to be solved by the invention]

However, such a current collector includes a main spring 6 for applying upward force, a lowering cylinder lever 7, a lowering cylinder 8 for lowering the current collector. This required many parts, including a key to lock the TEPCO device in the folded state, a lowering cylinder device, and air piping to the lock device, resulting in a complicated current collector.

The present invention was devised in view of the above points, and its purpose is to provide an electric current collector with a simple structure by eliminating unnecessary items such as the above-mentioned devices and parts. It is.

[Means for solving the problem] In other words, the means for achieving the purpose is to use an electric motor to raise and lower the current collector, and the electric motor and a ball screw are used to raise and lower the current collector. A linear motion device with a built-in motor (hereinafter referred to as a linear motion motor) that converts the rotation of the motor into axial motion of the output shaft at the tip is used, and current is collected from the output shaft of the direct motion motor via an insulated rod. The main shaft lever fixed to the main shaft of the device is moved to raise and lower the current collector, and when the contact wire moves up and down during running, the deflection of the support spring of the current collection boat is detected and the current collector is moved directly. The electric motor is driven to raise and lower the current collector framework.

In the current collector of the present invention, the rising from the folded state and the downward folding of the current collector during the rising are performed by the rise and fall switches, respectively. The height change of the framework in response to the change in height is
Operation of the switch and switch that detects the deflection of the support spring of the collector boat
This is done under automatic control.

[For production]

Its operation will be explained in the following embodiment. Hereinafter, one embodiment of the electric current collector of the present invention will be described in detail with reference to the drawings.

〔Example〕

FIG. 1 is an overall configuration diagram showing the mechanism and operation circuit of the electric current collector of the present invention, with the current collector in contact with a contact wire, and FIG. 2 is a partial view of a support spring.

The current collector shown in FIG. 1 has a simple framework shape in order to explain the principle of the present invention, but the current collector has a diamond-shaped frame shape like the conventional current collector shown in FIG. The functions are exactly the same regardless of the framework.

In Fig. 1, 15 is a lower frame, 16 is an upper frame of the same length as the lower frame 15, and 17 is a connecting link. The lower frame 15 and the upper frame l6 are rotatably connected. 18 is the underframe, the lower frame 15 and the upper frame l
The lower end of 6 is rotatably supported at a distance equal to that of the connecting link, and the whole has a parallelogram shape. 1
9 is a main shaft of the lower frame 15, 20 is a main shaft lever fixed to the main shaft 19, and 21 is a direct-acting motor installed insulated from the underframe 19. Here, a direct-acting motor is a motor with l-
Combine the screws into one piece! When the motor is rotated, the output shaft moves in and out in the axial direction. It is an electric device with a holding brake and is similar to commonly known and commercially available devices. 22 is an output shaft of the direct-acting motor 21, which expands and contracts in the axial direction of the motor as the direct-acting motor 21 rotates forward and backward. 23 is an insulating rod that connects the output shaft of the direct-acting motor and the main shaft lever; 24 is an outer cylinder of a support device that is fixed to the connecting link 17 and maintains the vertical position regardless of whether the current collector is raised or lowered; 25 is an outer cylinder of the current collector boat; Support spring, 26, collector boat, 27
is a support rod of the current collector boat 26 fixed to the current collector boat 26, which is inserted into and passes through the supporting device outer cylinder 24, and a magnet ring 28 is insulated and fitted to the lower end of the support rod. Also,
A switch base 29 is insulated and attached to the lower end of the support device outer cylinder 24, and a raise detection switch 30 is attached to the upper part of the switch base 4, and a lower detection switch 31 is attached to the lower part of the switch base 4. ing.

These switches are, for example, reed switches, and operate without contact when the magnet ring 28 is placed immediately in front.

32 is a switch for raising and lowering the current collector, and 33 is a power source.

Next, the operation of this device having such a structure will be explained.

The upper surface of the collector boat 26 is applied to the contact wire 12 with a pushing force of 5.5, for example.
kg, and the support spring 25 is bent by the contact force with the contact wire 12, that is, the upward force, so the magnet ring 28 is located at a lower position than the lift detection switch.

When the train runs and the height of the contact wire 12 rises, the collector boat 26 and the support rod 27 follow and rise, and when it rises above a certain level, the magnetic ring 28 activates the lift detection switch 30, and the linear motion The electric motor 21 is started, the output shaft 22 is retracted, the main shaft 19 is rotated through the insulating rod 23 and the main shaft leverage, and the power output device framework and the detection switch are raised.

When the contact force between the contact wire 12 and the current collector boat 26 reaches a predetermined value, that is, 5.5 kg, the support spring 25 is bent, and the lifting detection switch 30 is turned off, so that the linear motor 21 is stopped. Further, when the height of the contact wire 12 becomes lower, the support spring 25 is bent, and the magnet ring 28 is lowered, turning on the detection switch 31, so the linear crawler 21 is activated.
The output shaft 22 comes out, rotates the main shaft 19 in the downward direction, and the framework descends. When the framework is lowered and the contact force between the contact wire 12 and the current collector boat 26 is reduced, the support spring 25 is extended, the lowering detection switch 31 is turned OFF, the linear motor 21 is stopped, and the lowering of the framework is stopped.

In this way, the current collector boat 2 follows the vertical displacement of the contact wire 12.
The framework moves up and down by moving up and down 6 to maintain a good current collection state.

When lowering and folding the current collector, switch the switch 32 in the lower direction to start the linear motor 21 and move the output shaft 22.
extends and lowers the framework to the folded position. At the folding position, a limit switch (not shown) that detects the output shaft or frame position detects that the frame has descended to a predetermined position, and turns off the linear motor 21.

When the current collector is folded, the current collector boat 26 has no contact force with the contact wire 12, so the lift detection switch 30 is in the ON state as shown in FIG. When turned on in the upward direction, the current collector rises, contacts the contact wire 12, and returns to the state shown in FIG. 1.

Although FIG. 1 shows the case where DC is used as the power source 33 of the direct-acting motor 21, even if an induction motor is used instead of a direct-current motor as the direct-acting motor 2l, by changing the switch 32. It is clear that exactly the same functionality is obtained.

Furthermore, in this embodiment, the linear motor 21 applies rotational moment to the main shaft of the current collector to move the current collector up and down. The function is also similar to the device of the present invention.

〔Effect of the invention〕

As explained above, according to the present invention, the main spring device, lowering cylinder device, key device, air piping, electromagnetic valve, etc. in the conventional current collector are completely unnecessary, and it is very simple and has a great practical effect. Furthermore, since it is an all-electric type, it is possible to perform active control of follow-up by using an appropriate contact wire position detection means, which will have great benefits in the future.

[Brief explanation of the drawing]

Fig. 1 is an overall configuration diagram showing the mechanism and operating circuit of the electric current collector of the present invention, and Fig. 2 is a partial view of the support spring of the collector boat in the state in which the current collector is lowered to be folded and in the folded state. , FIG. 3 is a diagram showing the mechanism of a conventional current collector. 1, l5...Lower frame, 2.16...Upper frame, 3...Ceiling pipe, 4...Main shaft, 5...
... Spring lever, 6... Main spring, 7-...
... Cylinder lever, 8... Lowering cylinder, 9.
26...Collector boat, 10. 25...
Support spring, 11...Support device, 12...
・Trolley wire, 17...Connection link, 18...
...Underframe, 19...Main shaft, 20...
Main shaft lever, 21...Direct motor, 22...
...Output shaft, 23...Insulation rod, 24...1...
・Support device outer cylinder, 27...Support frame, 28...
・・・Magnetic ring, 29... Switch, Chi stand, 30
...Up detection switch, 31...Down detection switch, 32...Up, down switch,
33...Power supply.

Claims (1)

[Claims] (1) Construct an electric current collector that raises and lowers the current collector using the rotational force of an electric motor, and changes in the contact force between the current collector boat and the contact wire of the current collector are reflected in the support of the current collector boat. An electric current collector, characterized in that the expansion and contraction of a spring is detected, and the rotational force of the electric motor is thereby raised and lowered through a transmission mechanism.