JP3751058B2 - Slider lock mechanism of direct acting pantograph device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a slider lock mechanism of a direct-acting pantograph device in which a current collecting boat body is vertically moved by a lift cylinder device.
[0002]
[Prior art]
A general structure of a pantograph device for supplying electric power from an overhead wire to a vehicle is as shown in Japanese Patent Application Laid-Open No. 62-68002 and Japanese Patent Application Laid-Open No. 63-92202. The current collector boat provided at the top of the body is brought into contact with and separated from the overhead line. For the purpose of reducing aerodynamic noise, one mast provided with the current collector boat is vertically moved by a lift cylinder. A direct-acting pantograph device that can be moved up and down has been proposed.
[0003]
The above-mentioned direct acting pantograph device releases the contact with the overhead wire by lowering the current collector boat body, but if this state is maintained, the height of the mast is lowered even if the current collector boat body is lowered. Therefore, it cannot meet the various legal standards that set the limits of railway vehicles. Therefore, the mast is tilted down using the air cylinder using the compressed air supplied from the compressor of the vehicle to be in the housed state.
[0004]
[Problems to be solved by the invention]
However, for example, the lift cylinder is extended by impact or vibration applied to the mast during storage or by receiving wind when traveling in the storage state, and the current collector boat body supported by the slider and the slider by the extension operation of the lift cylinder. When the is moved, these may interfere with other members and be damaged.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a mast that is movable between a standing state and a retracted state, a main cylinder is provided in the mast, and a slider that moves up and down by the expansion and contraction of the lift cylinder is provided in the main pipe. In the linear motion type pantograph device in which the current collector boat body can be moved up and down integrally with the slider, an opening is formed in each of the main pipe and the lower end side surface of the slider, and at the lowermost position of the slider in these openings, The engaging member is engaged.
[0006]
The slider lock mechanism includes an urging mechanism and a linking mechanism that urges the engaging member in the engaging direction, further forms a tapered surface at the tip of the engaging member, and makes contact with the descending slider. It is preferable to adopt a structure in which the joint member is moved in the unlocking direction.
[0007]
By providing an urging mechanism, the slider is securely held at the lowest position, preventing the current collector boat from rising due to impact, vibration, etc., and by providing a link mechanism, the slider lock mechanism can be made compact. The output can be increased by increasing the diameter of the cylinder that drives the lock mechanism without hindering the arrangement of other members.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 is a side view of a linear motion pantograph device to which the slider lock mechanism according to the present invention is applied, FIG. 2 is a plan view of the linear motion pantograph device, and FIG. 3 is a mast portion of the linear motion pantograph device. FIG. 4 is an AA arrow view of FIG. 3, and FIG. 5 is an enlarged view of the slider lock mechanism according to the present invention.
[0009]
In the direct-acting pantograph device, a frame 1 is insulated and attached to the roof of a vehicle via an insulator 2, a horizontal shaft 3 is provided on the frame 1, and one end of a base 4 is rotatable on the horizontal shaft 3. The mast 5 is provided on the base 4.
[0010]
A lever 6 is attached to the base 4, and a pair of mast raising / lowering cylinders 7 that are operated by air are disposed between the lever 6 and the frame 1, and further between the lever 6 and the frame 1. A hydraulic damper 8 is disposed substantially parallel to the mast raising / lowering cylinder 7 to absorb shocks at the mast standing position and the storage position.
[0011]
In addition, by compressing the mast raising cylinder 7, the mast 5 falls to the imaginary line position in the figure, and by extending the mast raising cylinder 7, the mast 5 stands up to the vertical position shown by the solid line in the figure. Further, the mast extends in the direction of arrow a in a lift cylinder described later.
[0012]
Further, an arm 9 for locking the mast 5 in the storage position on the underframe 1, a storage lock cylinder 10 for operating the arm 9, an upright detection valve 11 for detecting that the mast 5 has stood up, and a mast 5 in the upright position A lock mechanism 12 that locks the lock mechanism 12 and a mast lock cylinder 13 that operates the lock mechanism 12 are provided.
[0013]
As shown in FIGS. 3 and 4, the mast 5 has a lift cylinder 14 that is operated by air on the base 4, and a slider 15 is disposed outside the lift cylinder 14. And the rod upper end of the lift cylinder 14 are coupled via a housing 16 so that the slider 15 moves up and down as the lift cylinder 14 expands and contracts. A spring 17 is provided outside the upper part of the lift cylinder 14 to alleviate the impact at the time of maximum compression.
[0014]
The slider 15 is disposed in the main pipe 18, and a plurality of guide rollers 19 are attached to the main pipe 18. The guide rollers 19 guide the raising and lowering of the slider 15 and prevent the slider 15 from rotating. ing.
[0015]
A guide 20 is attached to the inside of the recess provided in the central portion of the housing 16, and a cylindrical body 21 whose upper end is closed is slidably inserted inside the guide 20, and the lower end is inserted into the cylindrical body 21 with the lift cylinder. A high-frequency absorbing spring 22 supported by the upper end of the rod 14 is disposed, and a top plate 23 is fixed to the upper end of the cylinder 21, and a lid that prevents intrusion of dust or the like into the pantograph device on the top plate 23. 24, and a current collecting boat body 25 is provided on the top plate 23. And the electric current from an overhead wire flows through the sliding board provided in the current collector boat body 25. FIG.
[0016]
Further, an inner cover 26 supported on the base 1 side is disposed outside the main pipe 18, and an outer cover 27 that moves up and down with the expansion and contraction of the lift cylinder 14 is disposed outside the inner cover 26. Is arranged.
Further, the lower end of the main pipe 18 is provided with a slider lock mechanism 40 according to the present invention for locking by the spring force of the spring and compressed air.
[0017]
The slider lock mechanism 40 forms a rectangular opening 41 on the lower end side surface of the main pipe 18 and is smaller than the opening 41 on the lower end side surface of the slider 15 facing the opening 41 when the slider 15 is at the lowest position. An opening 42 having an area is formed, and an engaging member 43 that engages both the openings 41 and 42 is provided outside the main pipe 18.
[0018]
The engaging member 43 having a crank shape has an intermediate portion rotatably supported by a pivot 45, the tip of the engaging member 43 inserted into the openings 41 and 42 is a tapered surface 43a, and the other end is a cylinder unit. A knuckle 46 attached to a rod 44 and a pivot 47 are pivotally coupled.
[0019]
A spring 44 a that urges the engaging member 43 in a direction to engage with the openings 41 and 42 is provided in the cylinder unit 44, and the cylinder unit 44 pivots to a joint metal 48 whose base end is fixed on the base 4. 49 is rotatably supported via 49.
[0020]
The cylinder unit 44, the knuckle 46, and the crank engagement member 43 constitute a link mechanism. Thus, since the slider lock mechanism 40 employs a link mechanism, the slider lock mechanism 40 can be configured in a small size, and the diameter of the cylinder unit 44 is increased and the output of the cylinder unit 44 is increased without hindering the arrangement of other members. It is possible.
[0021]
Next, the operation of the slider lock mechanism described above will be described based on the operation of the mast with reference to FIGS.
When the mast 5 is changed from the use state (standing position) to the storage state, the lift cylinder 14 is reduced. Then, when the slider 15 provided with the current collecting boat body 25 is lowered to a predetermined position (the lowest position), the tip of the engaging member 43 is moved by the elastic force of the spring 44a urging the knuckle 46 downward. The slider 15 is locked by engaging with the openings 41 and 42. Thereafter, the mast 5 may be rotated to the storage state about the horizontal shaft 3 that is rotatably supported by the base 4.
[0022]
When the slider 15 is lowered, the lower end of the slider 15 hits the taper surface 43a of the engaging member 43, and the engaging member 43 is temporarily counterclockwise about the pivot 45 in FIG. 4 against the spring 44a. When the slider 15 is lowered to the lower end, the tip of the engaging member 43 is engaged with the opening 42 by the elastic force of the spring 44a.
[0023]
On the other hand, when the mast 5 is changed from the stored state to the use state (standing position), the mast 5 is rotated to the standing position about the horizontal shaft 3 (detected by the rising detection valve 11 (see FIG. 1)), and then the cylinder. The unit 44 is driven to move the knuckle 46 upward, one end of the engaging member 43 is pulled out of the opening 42 to release the engagement, and then the lift cylinder 14 is extended to The slider 15 is raised to a position where it comes into contact with the overhead wire.
[0024]
【The invention's effect】
As described above, according to the present invention, the mast provided with the current collecting boat body can be raised and lowered by moving the slider disposed in the main pipe up and down by expansion and contraction of the lift cylinder. In the direct-acting pantograph device that is movable between the state and the storage state, the direct-acting pantograph device forms an opening on each of the lower ends of the main pipe and the slider, and at the lowest position of the slider, A biasing mechanism that biases the engagement member that engages with the opening of the slider in the engagement direction is provided, so that the slider is securely held at the lowest position, and a current collecting boat body caused by impact, vibration, etc. Is prevented from rising. Therefore, the mast and the like are prevented from being damaged during storage.
[0025]
Further, since the engaging member constitutes a part of the link mechanism, the slider lock mechanism can be miniaturized, and the diameter of the cylinder unit can be increased without a hindrance to the arrangement of other members. The slider can be securely locked.
[0026]
Further, since the tapered surface that contacts the lower end of the slider when lowered is formed at the tip of the engaging member, smooth locking can be performed.
[Brief description of the drawings]
FIG. 1 is a side view of a linear motion pantograph device to which a slider lock mechanism according to the present invention is applied. FIG. 2 is a plan view of the linear motion pantograph device. FIG. 3 is an enlarged view of a mast portion of the linear motion pantograph device. Side sectional view [FIG. 4] AA arrow view of FIG. 3 [FIG. 5] Enlarged view of the slider lock mechanism according to the present invention [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Underframe, 3 ... Horizontal axis, 4 ... Base, 5 ... Mast, 14 ... Lift cylinder, 15 ... Slider, 18 ... Main pipe, 25 ... Current collector boat body, 40 ... Slider lock mechanism, 41, 42 ... Opening 43 ... engaging members, 44 ... cylinder unit (biasing mechanism).

Claims (3)

A main pipe is fixed in a mast that is movable between a standing state and a stowed state, a lift cylinder is disposed in the main pipe, and a slider and a current collector supported by the slider are operated by the operation of the lift cylinder. In the linear motion type pantograph device in which the hull is moved up and down, an opening is formed in each of the lower ends of the main pipe and the slider, and a slider is engaged with the both openings on the side of the main pipe. A slider locking mechanism for a direct acting pantograph device, characterized in that an engaging member is provided for locking at a lowest position. 2. The direct-acting pantograph according to claim 1, wherein the slider-locking mechanism includes an urging mechanism for urging the engaging member in the engaging direction and a link mechanism. The slider lock mechanism of the device. 2. The slider locking mechanism of the direct acting pantograph device according to claim 1, wherein a taper surface is formed at a tip of the engaging member so as to move the engaging member in the unlocking direction by contacting the descending slider. A slider lock mechanism for a direct acting pantograph device.

Images