JPH0522443B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a current collector for collecting current from an insulated trolley for a movable cart or the like.

(Prior art and its problems) Conventionally, this type of current collector has a brush holder at the upper end and is swingable in the vertical direction in order to cope with the horizontal shaking of the movable cart and changes in the insulated trolley. The swing arm is rotatable in the left-right direction at its lower base end, and supports a brush holder rotatably in the left-right direction at its upper end.

For example, if the present invention is explained using FIG.
The swing arm 18 is supported so as to rotate in the left-right direction integrally with the vertical axis, while the brush holder 36 is attached to the upper tip of the swing arm 18.
It is supported via a vertical second vertical axis 32 so as to be rotatable about the second vertical axis.

However, since the range of left and right rotation of the swing arm 18 and the brush holder 36 is not particularly limited, for example, when climbing over the divided portion of the insulated trolley 62 as shown in FIG. Therefore, if the swing arm 18 and its brush holder 36 are rotated significantly, the brush holder 36 itself may come off from the extension of the insulating trolley, or the brush holder 36 may
There is a risk that the insulating trolley will be tilted left and right to a large extent with respect to the extension line of the insulating trolley, and it will deviate from the receiving width W of the transfer guide 65 shown in FIG. . Furthermore, there is a risk that the brush holder 36 or the insulating trolley may be damaged. Incidentally, examples of locations where a contact wire is divided as shown in FIG. 6 include a rotational connection portion provided in a bridge or the like to absorb deflection due to thermal expansion and contraction and the load of an automobile or the like.

(Means for solving the problem) In order to solve the above problem, the present invention fixes a current collector base 3 having a pair of upper and lower brackets 7 and 8 to a movable trolley D that runs along an insulated trolley. , the brackets 7, 8 have a vertical first longitudinal axis 9
is supported rotatably around the axis of the first vertical shaft 9,
The first vertical shaft 9 is provided with a horizontal horizontal shaft 17, and the base end of the swing arm 18 is supported on the horizontal shaft 17 so as to be rotatable around the axis of the horizontal shaft 17. The swing arm 18 is made to be able to swing vertically as well as horizontally, and a spring mechanism 22 urges the swing arm 18 toward the upper insulated trolley. In the current collector of an insulated trolley that supports a brush holder 36 rotatably about the axis of the second vertical axis via the second vertical axis 32, the first vertical axis of the swing arm 18 is attached to the current collector base 3. A first stopper 25 is provided that regulates the rotation angle around the center within a certain lateral angle range with respect to the traveling direction of the movable trolley D, and a first stopper 25 is provided at the upper end of the swing arm 18. In contrast, a second stopper 41 is provided for regulating the rotation angle of the brush holder 36 about the second vertical axis within a certain left-right angle range.

(Example) In FIG. 1 showing a partially longitudinal side view of a current collector to which the present invention is applied, a current collector base 3 is fixed to a horizontal support rod 1 of a moving trolley D by a U bolt 5, and the base 3 is integrally equipped with a pair of upper and lower brackets 7 and 8, and the brackets 7 and 8 have a vertical first
A vertical shaft 9 is rotatably fitted. At the bottom of the first vertical axis 9 are two radial holes above and below the lower bracket 8.
Book pressure pins 10 and 11 are inserted and fixed, and both pins 10 and 11 prevent the first vertical shaft 9 from coming off. A lead wire support member 13 is rotatably fitted into the protruding portions at both ends of the pressure pin 11 located below the lower bracket 8, and a lead wire 12 is fastened to the support member 13 by a plastic band 15. has been done.

A horizontal shaft (pressure pin) 17 perpendicular to the first vertical shaft 9 and the pins 10 and 11 is rotatably fitted into the center of the first vertical shaft 9 in the vertical direction.
The base end portions of a swing arm 18 having a U-shaped cross section opening downward are fitted and fixed to both ends of the swing arm 18 . That is, the swing arm 18 is supported by the first vertical shaft 9 via the horizontal shaft 17 so as to be rotatable in the vertical direction. The mounting position of the horizontal shaft 17 is the center line 0 of the first vertical shaft 9.
The tip side of arm 18 (arrow A direction side) with respect to 1
biased toward

A pressure pin 1 passing through the first vertical axis center line 01 and parallel to the horizontal axis 17 is located on the first vertical axis 9 above the horizontal axis 17.
9 are fitted and fixed, and boss portions 20a of a hook link 20 are rotatably fitted to both ends of the pressure pin 19. A hook portion 23a of a central shaft 23 of the spring mechanism 22 is engaged with the hook link 20, and the central shaft 23 extends below the tip of the swing arm 18 through a long hole 18a of the swing arm 18. A flywheel screw 24 is screwed onto the tip of the center shaft 23, and a coil spring 29 is fitted into the center shaft 23.
One end of the spring 29 is connected to the screw 2 through the washer 28.
4, and the other end of the spring 29 is in pressure contact with the swing arm 1.
It is pressed into contact with two pressure pins 26 of No. 8 via washers 27. The pin 26 is fixed to the center of the swing arm 18 parallel to the horizontal axis 17, and the center shaft 23 is inserted between the pins 26 to slidably hold the center shaft 23. That is, the screw 24 that pushes the spring 29
and the pressure pin 26 of the swing arm 18, thereby urging the tip of the swing arm 18 toward the insulating trolley 62 (upper side).

A first stopper 25 is provided on the upper bracket 7 of the base 3 for regulating the amount of rotation of the swing arm 18 about the first vertical axis 9. The first stopper 25 is formed in a U-shape that opens downward when viewed in the direction of arrow A, and straddles the upper bracket 7 from above, and the upper wall hole 25c is formed in the upper protrusion 9a of the first vertical shaft 9. Pin holes 25b are provided on both sides 25a of the stopper 25, which are fitted into the pin holes 25b, and by inserting (or press-fitting) both ends of the pin 19 into the pin holes 25b, the first vertical shaft 9 and The first stopper 25 is connected for integral rotation around the center line 01. As shown in FIG. 2, both side portions 25a of the first stopper 25 are opposed to both side edges 7a of the upper bracket 7 with a certain gap d1 in between, and the first stopper 25
When the swing arm 18 rotates with the support rod 1 side, the edge of either side portion 25a on the support rod 1 side comes into contact with the edge 7a of the upper bracket 7, thereby controlling the amount of rotation of the swing arm 18 around the first vertical axis within a certain range. It is becoming more and more regulated. The certain range is, for example, within the width W of the tip end of the transfer guide 65 shown in FIG.

A bearing member 30 having a U-shaped side surface that opens upward is fixed to the tip of the swing arm 18 shown in FIG. The bearing member 30 has a bent portion 30a at one end thereof.
is inserted into and engaged with the hole on the upper surface of the swing arm 18, and the other end hook portion is connected to the tip pressure pin 3 of the arm 18.
1 is engaged. A substantially vertically concentric hole is formed in the upper surface of the tip of the arm 18 and the lower surface of the bearing member 30, and a bush (second vertical shaft) 32 is rotatably fitted into the hole. A U-shaped clamp member 33 that opens upward is mounted on the upper end of the bush 32, and the clamp member 33 is integrated with the bush 32 by a bolt 34 with an upper end flange and a nut 35. That is, the clamp member 33 is supported at the tip of the arm so as to be rotatable around the bush (second vertical axis).

The clamp member 33 has a U-shaped bearing recess 37 on both sides, and a brush holder 36 is installed in the bearing recess 37.
The shaft portion 36a is rotatably fitted therein. A retaining member 39 having a boss portion at the upper end is welded to one side (front side in FIG. 1) of the clamp member 33, and a retaining bolt 52 is attached to the upper boss portion of the retaining member 39. It is installed.

The second stopper 41 for regulating the amount of rotation of the clamp member 33 is made up of a metal band 42, a tightening bolt 43, and a bolt cover 44, as shown in FIG. It has grooves (holes) 42a spaced apart from each other, one end of which is welded to the bottom wall 44a of the bolt case 44, goes around the swig arm 18 once, and the engagement groove 4
A male threaded portion of a bolt 43 is engaged with 2a. The bolt 43 is rotatably supported by the case 44. Therefore, for example, by turning the bolt 43 to the right, the band 42 is tightened, and by turning it to the left, the band 42 is loosened. As shown in FIG. 5, the second stopper 41 is arranged at a certain gap d2 from the end edge 33a of the clamp member 33 on the arm proximal end side (in the direction of arrow B). That is, when the clamp member 33 rotates, the end edge 33a comes into contact with the band 42, so that the amount of rotation of the clamp member 33 and the brush holder 36 around the bush 32 is restricted within a certain range. The certain range is, for example, a range in which the tip of the brush holder 36 swings about ±10 mm.

The brush holder 36 is an insulating member made by injection molding of Noryl resin, polycarbonate, etc.
A pair of vertical guide walls 53 on both sides as shown in the figure.
and a copper brush 5 in the center between the guide walls 53.
7 is fixed parallel to the guide wall 53. Second
As shown in the figure, the brush 57 is press-fitted into the center groove 56 and both end grooves 58 of the holder 36, and
As shown in FIG. 1, one end of the lead wire 12 is fixed to 7 with a bolt 61. brush 57
contacts the contact wire 64 of the insulated trolley 62.

The current collector as described above is 1 as shown in FIG.
For example, one pair of front and rear wheels are provided for each movable trolley D.

As shown in FIG. 3, the insulating trolley 62 consists of a U-shaped hard resin insulating cover 63 that opens downward, and a copper trolley wire 64 housed within the insulating cover 63.

(Function) As the brush holder 36 is urged upward by the action of the spring mechanism 22, the brush 57 is attached to the contact wire 64 of the upper insulated trolley 62, as shown in FIG.
and is supplied with power from the contact wire 64. The swing of the movable trolley D in the horizontal direction perpendicular to the contact wire 64 is caused by the rotation of the arm 18 about the first vertical axis 9 and the rotation of the brush holder 36 around the bush 32, which causes the brush 57 to move parallel to the insulating trolley 62. This is absorbed by adjusting the degree, so that the brush 57 always contacts the contact wire 64 in a good condition.

As shown in FIG. 6, when transferring from one transfer guide 65 to the other transfer guide 65 at the divided portion of the insulating trolley 62, for example in the direction of arrow A, even if there is a wind or an external action, the arm 18
The amount of rotation around the first vertical axis 9 and the brush holder 36
Since the amount of rotation around the brush 32 is regulated within a certain range by the first and second stoppers 25 and 41, as shown in FIG.
will never come off. Therefore, it is possible to smoothly transfer from one transfer guide 65 to the other transfer guide 65 at any time.

(Effects of the Invention) As explained above, the present invention fixes the current collector base 3 having a pair of upper and lower brackets 7 and 8 to the movable trolley D that runs along an insulated trolley, and supports a vertical first vertical shaft 9 rotatably around the axis of the first vertical shaft 9;
is provided with a horizontal horizontal shaft 17, and the swing arm 1
By supporting the base end of the swing arm 8 on the horizontal shaft 17 so as to be rotatable around the axis of the horizontal shaft 17, the swing arm 18 can be made to be able to swing up and down as well as swingable left and right. The swing arm 18 is biased upward toward the insulated trolley by the spring mechanism 22, and a vertical second
In the current collector of an insulated trolley that supports a brush holder 36 rotatably about the second vertical axis via the vertical shaft 32, the first vertical axis of the swing arm 18 is attached to the current collector base 3. A first stopper 25 is provided at the upper end of the swing arm 18 for regulating the rotation angle within a certain lateral angle range with respect to the traveling direction of the moving trolley D. A second shaft that regulates the rotation angle of the brush holder 36 around the second vertical axis within a certain left-right angle range.
Since the stopper 41 is provided, there are the following advantages.

(1) By regulating the amount of rotation around the first vertical axis 9 with the first stopper 25, the horizontal position of the brush holder 36 relative to the insulating trolley 62, that is, the horizontal position perpendicular to the insulating trolley 62, can be controlled within a certain range. By controlling the amount of rotation of the brush holder 36 around the second vertical axis with the second stopper 41, the parallelism of the brush holder 36 with respect to the insulating trolley 62 is maintained.
When climbing over the divided portion of the insulated trolley 62 as shown in the figure, even if wind or other external elements act on the brush boulder 36, the brush holder 36 will not come off the transfer guide 65 and will always remain in good condition. You can transfer.
This also prevents the brush 57 and the insulating trolley 12 from being damaged or deformed.

(2) Since the horizontal position and parallelism of the brush holder 36 with respect to the insulated trolley 62 are controlled within a certain range by the first and second stoppers 25 and 41, the brush 57 is not caught on the trolley wire 64 when the movable trolley is installed. The matching work can be done easily.

(3) Since the swing arm 18 is freely rotatable around the first vertical axis 9, and the brush holder 36 is freely rotatable around the second vertical axis at the end of the arm, the swing arm 18 can be freely rotated around the second vertical axis at the tip of the arm, so that the swing arm 18 can be rotated freely around the second vertical axis at the tip of the arm. absorbs lateral vibrations,
The brush can always be kept in good contact with the contact wire.

[Brief explanation of the drawing]

FIG. 1 is a partially vertical side view of a current collector to which the present invention is applied, FIG. 2 is a view in the direction of the arrows in FIG. 1 (top view),
Fig. 3 is an enlarged partial cross-sectional view taken in the direction of the arrow in Fig. 1, Fig. 4 is an enlarged - cross-sectional view of Fig. 1, Fig. 5 is an enlarged - cross-sectional view of Fig. 1, and Fig. 6 is a section of the insulated trolley. FIG. 7 is an enlarged view in the direction of the arrow in FIG. 6 of a transfer guide used in the divided portion of the insulating trolley. 3... Current collector base, 9... First vertical axis, 17
... horizontal axis, 18 ... swing arm, 17 ... spring mechanism, 25 ... first stopper, 32 ... bush (second vertical axis), 36 ... brush holder, 41
...Second stopper, 57...Brush, 62...
Insulated trolley, D...Moving trolley (an example of moving equipment).

Claims (1)

[Claims] 1. On the mobile trolley D running along the insulated trolley,
A current collector base 3 having a pair of upper and lower brackets 7 and 8 is fixed, and a vertical first vertical shaft 9 is supported on the brackets 7 and 8 so as to be rotatable around the axis of the first vertical shaft 9. The first vertical axis 9 is provided with a horizontal horizontal axis 17, and the base end of the swing arm 18 is connected to the horizontal axis 1.
7, by supporting the swing arm 18 so as to be rotatable around the axis of the horizontal shaft 17, the swing arm 18 can swing vertically as well as horizontally, and the swing arm 18 can be moved upward by the spring mechanism 22. An insulated trolley supporting a brush holder 36 rotatably about the axis of the second vertical shaft via a vertical second vertical shaft 32 is attached to the upper tip of the swing arm 18. In the current collector, the current collector base 3 is provided with a groove that regulates the rotation angle of the swing arm 18 about the first vertical axis within a certain lateral angle range with respect to the traveling direction of the mobile cart D. 1 stopper 2
5 is provided at the upper end of the swing arm 18, and the swing arm 18 is provided with a rotation angle at the upper end thereof that regulates the rotation angle of the brush holder 36 about the second vertical axis within a certain lateral angle range with respect to the traveling direction of the movable trolley D. A current collector for an insulated trolley, characterized in that a two-stopper 41 is provided.