JP4083705B2 - Driver stepping device for railway vehicles - Google Patents

Description

The present invention relates to a driver stepping device that is installed on a cab floor of a railway vehicle and adjusts the height of the cab floor.
In railcar cabs, the height from the cab floor to the driver's seat is fixed, so when the driver sits in the driver's seat, the height is too high due to the difference in the body shape of each driver. Or too low. Therefore, it is related to the driver's stepping device for railway vehicles that can adjust the driver's cab floor to the appropriate height and adjust the appropriate height according to each driver's body shape, thereby preparing an environment that is always easy to drive. is there.

The cab floor of railroad vehicles has a small area and there are many devices under the floor, so there are restrictions on the installation area of the lifting device and the thickness of the device when the movable floor is lowered The floor height adjusting device to be installed could not be installed in the space of the cab floor.
Although it is not a lifting device that adjusts the height of the cab floor of a railway vehicle, it is a vehicle footrest device on which a driver's foot (left foot) seated in a driver's seat of an automobile or the like is placed, and the height can be adjusted What has been described is described in Japanese Utility Model Laid-Open No. 06-049171.
This vehicle footrest device is configured as shown in FIG. In FIG. 6, (a) shows the entire apparatus, and (b) shows an II cross section in (a). As shown in FIG. 6, a support base 22 fixed to the upper surface of the floor panel 21 in front of the driver's seat, an elevating plate 24 assembled to the upper plate 23 of the support base 22 so as to be movable up and down, The footrest plate 29 is supported on the plate 24 by a ball joint 28 so as to be tiltable in the front-rear and left-right directions. The lift plate 24 is moved up and down by a lift drive mechanism 30 including a lift motor 25, a pinion 26 and a lift rack 27. A first tilt drive mechanism 31 that tilts the footrest plate 29 in the front-rear direction and a second tilt drive mechanism (not shown) that tilts in the left-right direction are provided between the lift plate 24 and the footrest plate 29. ing. Reference numeral 32 denotes an elastic boot.
The vehicle footrest device configured as described above is adjustable in height and angle so that it can be used in an optimum state even when the body shape of the driver is different.

Moreover, although it is not related with the raising / lowering device for the driver's cabs of a railway vehicle, there are some which are provided with a footrest and a footrest on which a driver's feet are placed in a driver's seat of a vehicle or the like. Japanese Patent Application Laid-Open No. 11-140908 describes that a footrest for placing a foot on a control seat attached to a vehicle body via a vibration control device in a construction vehicle is attached. Japanese Patent Application Laid-Open No. 08-244512 describes that a pair of left and right footrests are attached so that left and right feet can be placed in front of a driver's seat of an automobile, respectively.
However, none of these conventional footrest devices and footrests adjust the height of the cab floor relative to the driver's seat, and they can be applied to the cab of a railway vehicle. Since the function of adjusting the height of the cab floor surface cannot be achieved, it cannot be the prior art relating to the present invention.

In addition, although it has nothing to do with the device for adjusting the height of the cab floor surface of a railway vehicle, various proposals have conventionally been made as a lifting device for adjusting the height of the floor surface of a building or the like. ing.
For example, Japanese Patent Application Laid-Open No. 07-133777 discloses a device in which a power mechanism is installed outside a floor lifting device using a link, and Japanese Patent Application Laid-Open No. 08-086103 uses a link. The thing which incorporated the hydraulic cylinder in the inside of a floor raising / lowering apparatus is described.
However, when the power mechanism is installed outside the lifting device as in the former, there is a problem that a large installation space is required, and as in the latter, a hydraulic cylinder is incorporated inside the lifting device. However, there is a problem that the thickness of the apparatus when the movable floor is lowered is large and a space for installing the hydraulic unit is required separately.

Japanese Utility Model Publication No. 06-049171 JP-A-11-140908 Japanese Patent Laid-Open No. 08-244512

  The present invention is to devise a floor surface lifting device that can adjust the height position with respect to the driver's seat by allowing the floor surface to freely move up and down in a small space on the cab floor of a railway vehicle. It is to reduce the installation area of the device and the thickness dimension when the floor is lowered.

[Solution 1] (corresponding to claim 1)
A solution for solving the above problems is a driver step device that is installed on the cab floor of a railway vehicle and adjusts the height position of the cab floor relative to the driver seat,
A fixed frame fixed to the cab floor, a movable floor supported by two sets of X links to the fixed frame so that the left and right sides can be raised and lowered, and slidably supported by the fixed frame A connection frame that is connected to the two sets of X links and drives the link, and a slide power mechanism that is attached to the fixed frame and slides the connection frame,
The height position of the movable floor can be freely adjusted with respect to the driver seat.
[Work]
A driver's stepping device is installed in the space on the cab floor of the railway vehicle, and the slide power mechanism is operated to slide the connecting frame connected to the right or left direction. By moving the connecting frame, the two sets of X links connected to the connecting frame rotate to move the movable floor up and down. In this way, the height position of the movable floor with respect to the driver's seat can be adjusted to a desired height according to the body shape of the driver.
Since the movable floor supported by two sets of X-links is movable up and down with respect to the fixed frame by moving the connecting frame slidably supported by the fixed frame, The thickness dimension can be reduced.

[Embodiment 1] (corresponding to claim 2)
Embodiment 1 is the driver stepping device according to the above solution, wherein the slide power mechanism includes an electric motor, a ball screw driven by the electric motor, and a ball nut engaged with the ball screw. It is arranged in the part.
[Work]
The ball screw is also rotated by the rotation of the electric motor, and the ball nut is moved. Due to the movement of the ball nut, the connecting frame connected to the ball nut is moved to move the movable floor up and down.
The slide power mechanism consisting of an electric motor, ball screw and ball nut is arranged on the lower convex part of the fixed frame, so the installation area is only required for the movable floor area. The thickness dimension to the bottom surface can also be reduced except for the portion of the lower convex portion.

[Embodiment 2] (corresponding to claim 3)
Embodiment 2 is the above-described solution 1 and the driver's stepping device according to Embodiment 1, in which a whistle switch is installed on the upper surface of the movable floor, and the movable floor is adjusted to an arbitrary height position. A switch can be used, and a safety shelf is pivotally attached to the driver's seat side of the movable floor to prevent an accidental pinching of the foot into the apparatus.
[Work]
Since the whistle switch is installed on the upper surface of the movable floor, the whistle switch can be used in a normal driving posture even when the movable floor is adjusted to an arbitrary height position. Further, since a safety shelf is installed on the driver's seat side of the movable floor, it is possible to prevent an accident that the foot is caught in the apparatus. This safety shelf has a structure that can be folded (rotated) in consideration of the case of inspecting the equipment.

According to the present invention, since a device for raising and lowering the floor surface can be installed on the cab floor of a railway vehicle, the following effects can be obtained, and an environment in which all drivers can easily drive is provided. Can do.
(1) Since each driver can appropriately adjust the height from the driver's seat to the cab floor, driving becomes easier and leads to safe driving.
Since the movable floor can be raised and lowered by the two sets of X links, the connecting frame, and the slide power mechanism, the installation area and the thickness dimension when the movable floor is lowered can be reduced. (Invention of claim 1).

(2) Since the slide power mechanism is composed of an electric motor, a ball screw and a ball nut and is arranged on the lower convex portion of the fixed frame, the installation area and the thickness dimension when the movable floor is lowered can be reduced. It can be installed in a narrow place such as a driver's cab floor (invention of claim 2).
(3) Since the whistle switch is installed on the upper surface of the movable floor, the distance from the driver's seat to the whistle switch can be made appropriate even when the movable floor is adjusted to an arbitrary height position. Can be operated reliably, leading to safe driving. In addition, since a safety shelf is installed on the driver's seat side of the movable floor, there is no fear that the driver will accidentally pinch his / her foot in the device. In addition, since the safety shelf is folded (rotatable), it does not hinder the inspection work of the cab equipment. (Invention of Claim 3)

  The purpose of enabling installation in a narrow space on the cab floor of a railway vehicle was realized by devising and combining simple configurations to reduce the installation area and the thickness dimension when the movable floor descends.

Embodiments of the present invention will be described with reference to FIGS. FIG. 1 is a front view showing a configuration of a driver's step device for a railway vehicle (when a safety shelf is not attached), FIG. 2 is a plan view thereof, and FIG. 3 is a front view when a safety shelf is attached. It is.
The driver's step device includes a rectangular fixed frame 2 and a rectangular movable floor 5 supported by the respective sets of X links 4 and 4 provided on the left and right sides of the fixed frame 2 so as to be movable up and down. And a slide power mechanism 1 attached to the fixed frame 2. The slide power mechanism 1 is installed in the lower convex portion 2a of the fixed frame 2, and includes an electric motor 1a, a universal joint 1b, a ball screw 1c, and a ball nut 1d. A ball screw 1c is connected to the output shaft of the electric motor 1a through the universal joint 1b. Further, a ball nut 1d is engaged with the ball screw 1c. If the electric motor 1a rotates, the ball screw 1c is connected through the universal joint 1b. Then, the ball screw 1c is rotated, and the ball nut 1d is moved in the right or left direction.

A rectangular slidable connecting frame 3 is provided in the fixed frame 2, and this connecting frame 3 is laterally moved relative to the fixed frame 2 by the four holding plates 2 b (the length of the fixed frame 2 is long). Slidable only in the direction). The connecting frame 3 is connected to the ball nut 1d by a ball nut receiver 3a provided at a substantially central portion thereof, and the roller bearings 3b and 3b provided at both ends thereof are connected to each set of X links. The roller shafts 4a and 4a of 4 and 4 are rotatably held.
One set of the X links 4 is arranged on both the left and right sides between the fixed frame 2 and the movable floor 5, and each set has a center of each pair of links 4b and 4c as a link shaft. It is configured to be coupled in a rotatable state by 4d. As shown in FIG. 1, the two links 4b and 4c are coupled so that their left ends are rotatable with respect to the movable floor 5 and the fixed frame 2 by pins 4e and 4e, respectively. In addition, rollers 4f and 4f and roller shafts 4a and 4a are mounted on the right end of the straight line. These rollers 4f and 4f are in contact with each other in a rollable state on the lower surface of the movable floor 5 or the upper surface of the bottom plate of the fixed frame 2.
The roller shaft 4a on the fixed frame 2 side (lower side) is held by the roller bearings 3b and 3b coupled to both ends of the connection frame 3 as described above.

Further, as shown in FIG. 3, a safety shelf 7 is rotatably attached to the driver seat side of the movable floor 5 by a hinge 7a. The safety shelf 7 is placed at the illustrated position when the step device is used, and covers the space formed between the fixed frame 2 and the movable floor 5, thereby ensuring the safety of the driver's feet. Is to secure.
And the floor covering 5a is affixed on the upper surface of the said movable floor 5, and the switch 6 for whistles is installed on it. The lead wire 6a of the whistle switch 6 is arranged so as not to interfere with the X link 4 even when the movable floor 5 moves up and down through the movable floor 5, and further penetrates the bottom surface of the fixed frame 2. Then, it is led out of this device.
Further, the lead wire 1 e of the electric motor 1 a is led out of the apparatus through the bottom surface of the fixed frame 2, and is connected to a separate controller box 8. The controller box 8 adjusts the height position of the movable floor 5 by controlling the current supplied to the electric motor 1a.

Next, the operation of the driver step device configured as described above will be described with reference to FIGS. 1 and 2.
When the motor 1a is rotated in a predetermined direction by operating the controller box 8, the ball screw 1c is rotated via the universal joint 1b, and the ball nut 1d is moved leftward. Then, the connecting frame 3 connected to the ball nut 1d is similarly moved leftward, and the roller bearings 3b, 3b on both sides integral with the connecting frame 3 are also moved in the same direction. By moving the roller bearings 3b, 3b to the left in this way, the right end roller shafts 4a, 4a of the left and right sets of X links 4, 4 are held on the upper surface of the bottom plate of the fixed frame 2. Along the left direction. As a result, the roller shafts 4 a and 4 a approach the left end of the link coupled to the movable floor 5 and the fixed frame 2 by the pins 4 e and 4 e, so that the left and right sets of X links 4 and 4 rise and raise the movable floor 5.

When the motor 1a is rotated in the direction opposite to the predetermined direction by operating the controller box 8, the ball screw 1c is also rotated in the reverse direction, and the ball nut 1d and the connecting frame 3 are moved in the right direction. And the movable floor 5 can be lowered.
The movable floor 5 can be stopped at a desired height position by stopping the rotation of the electric motor 1a by operating the controller box 8.
On the upper surface of the bottom plate of the fixed frame 2, a stopper 2 c for limiting the sliding amount of the roller shaft 4 a and the roller 4 f at the right end of the X link 4 is installed.
Further, the safety shelf 7 attached to the rear side of the movable floor 5 by a hinge 7a is placed at the position shown in FIG. 3 when the step device is used, and is fixed to the fixed frame 2 and the movable floor. Since the link part between the cover 5 and the cover 5 is covered, it is possible to prevent accidents such as the driver's feet being caught and to ensure safety. The hinge 7a can hold the safety shelf 7 at an arbitrary position when inspecting the cab equipment, so that the safety shelf 7 can be kept in a folded state, and workability at the time of equipment inspection is good. .

Next, a method for attaching the step device of the present invention to the space of the cab floor will be described with reference to FIG. FIG. 4 is a side view when the step device is attached to the cab floor.
As shown in FIG. 4, the driver stepping device is attached in a state where the portion of the fixed frame 2 is dropped into the footrest receiving portion 10 installed on the cab floor 9. Further, when the driver gets on the front side of the movable floor 5, the top side of the fixed frame 2 is attached to the cab by attaching two fall prevention pins 11 to prevent the entire step device from falling. Fasten to the floor part.
FIG. 5 is a side view showing a state when the step device of the present invention is attached to the cab 12 of the railway vehicle. In FIG. 5, 12 is a driver's cab, 13 is a stool, 14 is a driver, and the step device is installed on the driver's cab floor 9 at the feet of the driver, and his feet are placed on the movable floor 5. Used on board.

These show the structure of the step device of the Example of this invention, and are typical front views when the safety shelf is not attached. These are top views which show the structure of the stepping device of the Example of this invention. These are the typical front views of the step device of the Example of this invention. These are side views at the time of attaching the step device of the Example of this invention to the cab floor part. These are the schematic diagrams which show the positional relationship of a driver's cab, a seat, and a driver | operator in the state which attached the step apparatus of the Example of this invention to the driver's cab floor part. These are the schematic diagrams explaining the footrest for vehicles and apparatus which are the prior art, (a) is a perspective view of the whole apparatus, (b) is II sectional drawing of (a).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Slide power mechanism 1a ... Electric motor 1b ... Universal joint 1c ... Ball screw 1d ... Ball nut 1e ... Electric motor lead wire 2 ... Fixed frame 2a ... Lower convex part 2b ... Holding plate 2c ... Stopper 3 ... Connecting frame 3a ... Ball nut holder 3b ... Roller bearing 4 ... X link 4a ... Roller shaft 4b, 4c ... Link 4d ... Link shaft 4e ... Pin 4f ... Roller 5 ... Movable Floor 5a ... Floor covering 6 ... Whistle switch 6a ... Whistle switch lead wire 7 ... Safety shelf 7a ... Hinge 8 ... Controller box 9 ... Driver's cab floor 10 ... Foot pedal cover 11 ··· Falling prevention pin 12 ··· Driver's cab 13 ··· Stool 14 ··· Driver

Claims (3)

A driver step device that is installed on the cab floor of a railway vehicle and adjusts the height position of the cab floor relative to the driver seat,
A fixed frame fixed to the cab floor,
A movable floor supported by two sets of X links with respect to the fixed frame so that the left and right sides can be raised and lowered;
A connecting frame that is slidably supported by the fixed frame and is connected to and drives the two sets of X links;
A sliding power mechanism attached to the fixed frame and sliding the connecting frame;
A driver's stepping device for a railway vehicle, wherein the height position of the movable floor can be freely adjusted with respect to the driver's seat.   2. The slide power mechanism includes an electric motor, a ball screw driven by the electric motor, and a ball nut engaged with the ball screw, and is disposed on a lower convex portion of the fixed frame. The driver's stepping device for railway vehicles described in 1.   A whistle switch is installed on the upper surface of the movable floor so that the whistle switch can be used even when the movable floor is adjusted to an arbitrary height position, and a safety shelf is provided on the driver seat side of the movable floor. 3. The driver's step device for a railway vehicle according to claim 1, wherein the driver's step device is installed so as to be pivotable to prevent an accident in which a foot is caught in the device. 4.

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