JP6415861B2 - Master controller for railway vehicles - Google Patents

Description

  The present invention relates to a main controller for a railway vehicle, and more particularly to a main controller provided with a deadman device.

  Generally, in a railway vehicle, a master controller (master controller) that outputs a control command signal to a control device that controls a prime mover or the like is installed in a driver's seat. Operate the main handle. The master controller is intended to stop the railway vehicle as soon as possible when any abnormal situation occurs in the driver (for example, the master controller cannot be operated due to physical trouble). The driver is equipped with a deadman device, and the driver operates the main handle while constantly grasping the operation portion of the deadman device provided on the grip portion of the main handle.

  Such a master controller is known from Patent Document 1, for example. This is provided with a notch in the grip part of the main handle, and a detector without a mechanical moving part incorporated in the transparent conductive film is attached to this notch through the mounting plate. The main handle is provided with an indicator light that can be visually checked. The detector is connected to the starting circuit of the railway vehicle via electrical wiring that passes through the main handle. When the driver grips the main handle to operate the main controller, the detector is turned on. Thus, the ON signal is input to the starting circuit to be in a startable state, and a control command signal can be output to the control device.

  By the way, some of the main handles are provided with an arm portion that is swingably connected to a support shaft provided in the cab, and when the electric wiring is made through the arm portion, the operation of the main handle is performed. At this time, there is a risk that the electric wiring is twisted at the movable part of the arm part or is bitten into the movable part to cause a disconnection or a ground fault. In such a case, it is conceivable to protect the electrical wiring by surrounding it with a protective tube (see Patent Document 1), but this makes the wiring work troublesome.

JP-A-5-268701

  This invention makes it the subject to provide the main controller provided with the deadman apparatus which does not have a danger of a disconnection or the occurrence of a ground fault in view of the above point.

In order to solve the above-mentioned problems, the main controller for a railway vehicle of the present invention, which has a main handle, is provided with an operation portion of a deadman device in a grip portion of the main handle, and is operated while grasping the operation portion, The main handle is composed of an arm portion that is swingably connected to the support shaft, and a grip portion that extends in a direction perpendicular to the longitudinal direction of the arm portion at the tip of the arm portion. The arm portion and the grip portion are has an internal space together deadman device includes a retractable airbags incorporated in the inner space of the grip portion of the main so as to correspond to the operation unit handle, provided on the operating portion, the grip portion by lump grip of the operating unit a protrusion for pressing the airbag from entering the interior space, a pipe having one end connected to the air bag, the air cylinder and the other end of the pipe is connected, by projecting piece in lump grip of the operating portion Airbus Grayed is characterized in that it comprises a contact switched in conjunction with the movement of the piston in the air cylinder when deflated.

According to the present invention, when the driver Komu grip the operating portion of the dead man device provided on the grip portion of the main handle, airbags are deflated, acts on the piston via air pressure piping in this case, in the cylinder Move the piston. With this movement of the piston, the contact is switched, and the signal at this time is input to the start-up circuit so that the start-up is possible and the control command signal can be output from the master controller to the control device. Thus, in the present invention, unlike the conventional example described above, since the contact is switched by air pressure, there is no risk of disconnection or grounding due to the biting of the electric wiring in the movable part, and it is always stable. A deadman device can be activated.

In the present invention, after the driver switches the contacts in a way to push grip the operating portion of the dead man's switch, when the driver has opened the operating portion of the dead man's switch, as switched reliably cut contact again, the airbags It is preferable to further include an urging means that urges the piston in the other direction with the direction of movement of the piston in the air cylinder during contraction as one direction. In the present invention, a joint is interposed in the pipe, and the joint is provided at a lower end portion of the arm portion of the main handle, and is inserted between the base portion and the arm portion. It is also preferable that it is comprised by the one end of the base located in the said interior space with the rotation part inserted rotatably via a bearing.

The schematic cross section which shows the structure of the master controller of embodiment of this invention.

  Hereinafter, an embodiment of a master controller for a railway vehicle according to the present invention including a deadman device will be described with reference to the drawings.

  Referring to FIG. 1, reference numeral 1 denotes a main handle of a master controller (master controller) that outputs a control command signal to a control device that controls a prime mover and the like provided in a railway vehicle. The main handle 1 is formed so as to extend in a direction perpendicular to the longitudinal direction of the arm portion 11 and an arm portion 11 that is swingably connected to a support shaft 2 provided on the cab. And a grip portion 12. The main handle 1 is provided with a deadman device 3.

The deadman device 3 includes an operation lever 4 as an operation unit that is gripped when the driver operates the main handle 1 . The operation lever 4 is provided in a slit hole 13 formed in the grip portion 12 so as to be freely protruded and projected, and a protruding piece 41 is provided. Further, it has airbags 5 of retractable inside space 12a is provided corresponding to the grip portion 12 of the main handle 1. When the driver Komu grip the operating lever 4, airbags 5 pushes the airbags 5 protrusion 41 intrudes into the internal space 12a is adapted to shrink.

The airbags 5, one end of the flexible hose 61 as the pipe is connected, the other end an internal space 12a of the grip portion 12 and the arm portion 11, the joint 7 provided in the lower portion of the arm portion 11 through 11a It is connected. Because The airbags 5 and the air hose 61 available to those known, and a detailed description thereof will be omitted. The joint 7 is not particularly described with reference to an internal structure, but a so-called elbow type rotary joint is used, and a base 71 inserted into the main handle 1 parallel to the support shaft 2 and an internal space 11a of the main handle 1 One end of the base portion 71 located at the center is composed of a rotating portion 72 that is rotatably inserted through a bearing, and the other end of the air hose 61 is connected to the rotating portion 72. As a result, when the main handle 1 is swung, the rotating portion 72, and hence the air hose 61 existing in the arm portion 11, rotates following the swinging of the main handle 1, with the base 71 as the center of rotation. The air hose 61 is prevented from being bent in the main handle 1.

One end of another air hose 62 is connected to the other end of the base 71 located outside the main handle 1, and the other end is connected to the air cylinder 8. The air cylinder 8 is connected to the cylinder 81, a piston 82 which is slidably disposed in the cylinder 81 and divides the inside thereof into a first chamber 81a and a second chamber 81b, and is connected to the piston 82. And a piston rod 83 inserted into the end wall of the cylinder 81 on the chamber 81b side. Connected to the piston rod 83 is a contact 9 that switches in conjunction with the movement of the piston 82. The second chamber 81b of the cylinder 81, and the moving direction of the piston 82 in the air cylinder 81 when the airbags 5 is contracted one direction, as a biasing means for biasing the piston in the other direction A coil spring 84 is contracted. Below, the action | operation of the deadman apparatus 3 is demonstrated.

When the driver in the OFF state of the contact 9 Komu grip the operating lever 4 provided on the grip portion 12 of the main handle 1, airbags 5 is contracted by being pressed by the protrusion 41, the air pressure at this time the air hose 61, 62 The piston 82 moves in one direction (left side in FIG. 1) in the cylinder 81 against the coil spring 84. Thereby, the contact 9 is switched to the ON state (the state shown in FIG. 1). In the state where the operation lever 4 is grasped, the air pressure is always applied and the contact 9 remains ON, and the signal at this time is input to the start circuit to be in a startable state, and the control device from the master controller It is possible to output a control command signal for. On the other hand, when the driver releases the grip of the operation lever 4, the piston 82 moves in the other direction (right side in FIG. 1) in the cylinder 81 by the urging force of the coil spring 84, and the air pressure in the first chamber 81a is changed to the air hose. 61, 62 acts on the airbags 5 via, airbags 5 expands.

  As described above, in the present embodiment, unlike the conventional example described above, a configuration in which the contact point 9 is switched by air pressure is adopted, so that the disconnection or ground fault occurs due to the biting of the electric wiring at the movable part of the main handle 1. There is no risk of occurrence, and the Deadman device 3 can be operated stably at all times. Further, by providing the coil spring 84 as the urging means, the contact 9 can be surely switched again when the driver releases the grip of the operation lever 4 after switching the contact 9.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to said thing. In the above embodiment, the coil spring 84 is used as the urging means and the coil spring 84 is built in the cylinder 81 as an example. However, the present invention is not limited to this as long as the contact 9 can be switched again. For example, the coil spring 84 can be provided outside the cylinder 81. In the above embodiment, an example in which pipe connection is performed using an elbow type rotary joint in the vicinity of the connection portion of the arm portion 11 to the support shaft 2 is described. However, when the arm portion 11 swings, an air hose is used. The present invention is not limited to this as long as 61 and 62 can be prevented from being bent excessively.

1 ... master controller of the main handle, 12 ... grip portion of the main handle, 3 ... dead man's switch, 4 ... operation lever (operating part), 5 ... airbags, 61, 62 ... air hose (pipe), 8 ... air cylinder, 82 ... Piston, 9 ... Contact.

Claims (3)

In the main controller for a railway vehicle, which has a main handle, is provided with an operation part of the Deadman device in the grip part of the main handle, and is operated while grasping the operation part.
The main handle is composed of an arm portion that is swingably connected to a support shaft, and a grip portion that extends in a direction perpendicular to the longitudinal direction of the arm portion at the tip of the arm portion. Has internal space,
Deadman device includes a retractable airbags incorporated in correspondence with the operation unit in the internal space of the grip portion of the main handle, provided on the operation unit, the air penetrates into the internal space of the grip portion by lump grip of the operating unit a protrusion for pressing the bag, a pipe having one end connected to the air bag, the air cylinder and the other end of the pipe is connected, an air cylinder when the airbags is contracted by the projecting pieces in the inclusive grip of the operating unit A main controller for a railway vehicle, comprising a contact point that switches in conjunction with movement of an internal piston. Wherein the moving direction of the piston in the air cylinder to one direction at the time of airbags contraction, trunk for a railway vehicle according to claim 1, characterized by further comprising biasing means for biasing the piston in the other direction Controller. A joint is interposed in the pipe, and the joint is provided at a lower end portion of the arm portion of the main handle and is inserted in parallel to the support shaft, and a base portion located in the internal space of the arm portion. The main controller for a railway vehicle according to claim 1 or 2, characterized in that it is configured with a rotating part rotatably inserted through one end of a bearing.

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