JPH0516021Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a contact wire clamp hanger that supports an insulated trolley in which a conductive contact wire is covered with an insulating cover.

(Prior Art and its Problems) In general, an insulated trolley is installed on the ceiling of a factory or the like together with a rail for a moving electric device (for example, a hoist), and is used to supply power to the electric device. For example, as a clamp hanger for fixing such an insulated trolley to a bracket on the building side,
58-192130 or Japanese Patent Application No. 58-111650, there is a hanger made of resin that holds an insulating trolley using only its elastic function.

However, when only the elastic function of the resin hanger itself is utilized, there is a problem with the clamping force, and the insulating trolley may come off from the hanger, for example, when the current collector of a mobile electrical device is caught.

On the other hand, there is also a clamp hanger that connects a pair of clamp hanger members using only horizontal bolts and nuts, but when installing the trolley,
It takes a lot of time to temporarily fix the trolley to adjust its straightness, etc. In addition, in order to facilitate temporary fixing, there are some models such as Utility Model Publication No. 53-52638 that have a built-in spring in a location separate from the tightening bolt, but this requires a special spring storage space and requires a hanger. The assembly itself is also complicated.

(Purpose of the invention) The object of the invention is to provide a clamp hanger that can easily temporarily fasten an insulated trolley in a so-called snap-in style and that can securely hold the insulated trolley after installation. Furthermore, it is an object of the present invention to eliminate the space for arranging the spring member, facilitate assembly, and further improve the stability of holding electric wires on-site.

(Means for Achieving the Object) In order to achieve the above object, the present invention provides opposing claws at one ends of a pair of first and second hanger members 5 and 6 for clamping an insulating cover. 8, 8 respectively, and stopper portions 15, 15 for regulating the width between both claw portions are formed facing each other so as to be able to freely abut each other, and the other end portions are provided with recesses that engage with each other so as to be rotatable. A groove 30 and a peak 31 are formed, and the peak 3
A semicircular boss part 20 having a mounting bolt insertion hole 21, and a semicircular recess part 2 that fits into the boss part 20, which allows the claw parts 8, 8 side parts to rotate about the center point 1, and has a mounting bolt insertion hole 21.
Bolt insertion holes 10 and 11 are formed on the same center line in the center of both hanger members 5 and 6, and a nut fixing recess 12 is formed around the bolt insertion hole 10 of the first hanger member 5. A reinforcing rib 18 is formed on both sides of the bolt insertion hole 11 of the second hanger member 6 in the lengthwise direction of the contact wire, and a horizontal connecting bolt 33 inserted through the bolt insertion holes 10 and 11 is used for fastening a nut. a nut 34 disposed within the recess 12 and screwed into the coupling bolt 33;
Both hanger members 5 and 6 are tightened by a compressible spring member 35 fitted into the connecting bolt 33.

(Example) First, the structure of the insulated trolley will be explained. In Fig. 2, the insulated trolley is composed of a contact wire 1 as a conductor and an insulating cover 2 that is approximately U-shaped and opens downward and covers the contact wire 1. There is. The lower surface of the contact wire 1 is formed into a gentle concave shape as a power feeding surface 1a, and only the power feeding surface 1a is not covered by the insulating cover 2. The cross-sectional shape of the contact wire 1 is such that the midway portion thereof is constricted from the left and right sides in FIG. 2, and the lower side of the constricted portion extends left and right. On the other hand, the inner peripheral surface of the insulating cover 2 has a shape that matches the outer peripheral surface shape of the contact wire 1. By engaging the inner peripheral surface of the insulating cover 2 with the uneven portion of the outer peripheral surface of the contact wire 1, the contact wire 1 is held so that it cannot fall off. The outer peripheral surface of the insulating cover 2 is also constricted from the left and right sides, and engagement grooves 4 are formed on the left and right sides, respectively. Further, on both sides of the insulating cover 2, guard parts 3 are formed integrally with the cover 2, and extend downward in parallel to each other.

The clamp hanger that supports the above-mentioned insulated trolley on the building side is divided into two parts into a first hanger member 5 and a second hanger member 6, with the vertical plane passing through the center line of the contact wire 1 as the border in FIG. 1. , both hanger members 5 and 6 are made of aluminum alloy. Inward claw portions 8 are provided on the inner surfaces (faces facing each other) of the lower ends of each of the hanger members 5 and 6 and are opposed to each other with a gap W between them.
are formed respectively. Hanger members 5, 6
There is a bolt insertion hole 1 approximately in the center of the vertical width of the
0 and 11 are formed on the same center line, and the first
A nut turning recess 12 having a rectangular shape in the direction of the arrow is formed outside the hole 10 of the hanger member 5.
On the other hand, a bolt tightening seat 13 having a circular shape in the direction of the arrow is formed outside the hole 11 of the second hanger member 6 . The inner diameter of the bolt insertion hole 11 of the second hanger member 6 is formed to be slightly larger than the inner diameter of the bolt insertion hole 10 of the first hanger member 5, so that there is a slight play in the shaft of the bolt 33. There is.

A stopper portion 15 that projects inward is formed on the inner surface of each hanger member 5, 6 slightly below the holes 10, 11, and the stopper portions 15 are connected to each other when the insulating trolley is fixed or temporarily fastened. contact, thereby making the width between the claws 8 a predetermined width W.
regulated by. The predetermined width W is such that, for example, when the insulating trolley is held between the claws 8, the claws 8 are
The width is set such that the contact wire 1 reliably meshes with the meshing groove 4 of the contact wire 1, and the clamping pressure is a pressure that allows the contact wire 1 to move in the axial direction relative to the insulating cover 2 due to thermal expansion of the contact wire 1.

In FIG. 3, which shows an arrow view (inner view) of the first hanger member 5, the bolt insertion hole 10 is formed at the center of the width in the length direction of the contact wire. Two claw parts 8 are arranged on both sides of the length of the contact wire, and two stopper parts 15 are arranged on both sides of the length of the contact wire.

FIG. 4 is a view of the second hanger member 6 in the direction of the arrow in FIG. has been done. Further, reinforcing ribs 18 are formed on both sides of the bolt insertion hole 11.

In FIG. 5 showing an exploded plan view, a semicircular boss portion 20 extending toward the second hanger member 6 is formed at the center of the upper wall of the first hanger member 5 in the length direction of the contact wire. A mounting bolt insertion hole 21 is formed in the boss portion 20. On the other hand, a semicircular recess 22 is formed in the upper wall of the second hanger member 6, and the boss 20 fits into the recess 22.

In FIG. 2 showing the state during temporary fixing work, a mounting bolt 23 is inserted from below into the bolt insertion hole 21 of the upper wall of the first hanger member 5, and the mounting bolt 23 is further inserted into the hole 2 of the bracket 27 on the building side.
8 and a nut 25 at the tip of the bolt 23.
is screwed on. A groove 30 is provided at the tip of the upper wall of the first hanger member 5 (the end on the second hanger member 6 side).
On the other hand, a peak 31 is formed at the tip of the second hanger member 6, and the groove 30 and the peak 31 are rotatably engaged. Also, the second hanger member 6
The upper surface 6a of the upper wall is inclined downward as it goes to the side opposite to the first hanger member 5, thereby fixing the first hanger member 5 to the bracket 27 as shown in FIG. In this state, the second hanger member 6 can be rotated at a constant angle in the direction of the arrow X with respect to the first hanger member 5 about its peak 31.

A connecting bolt 33 and a nut 34 are used to connect the hanger members 5 and 6, and a coil spring washer 35 is used as a spring member. The coupling bolt 33 is arranged horizontally at right angles to the contact wire 1, is inserted through the insertion hole 11 of the second hanger member 6, passes through the insertion hole 10 of the first hanger member 5, and is inserted into the recess 12 of the first hanger member 5. It extends to,
It is screwed into the nut 34 in the recess 12. The coil spring washer 35 is connected to the head of the bolt 33 and the tightening seat 1.
3, and when temporarily fixed, it is slightly compressed as shown in FIG. 2, and when completely fixed, it is almost completely compressed as shown in FIG. 1.

Figure 6 shows an example of the arrangement of insulated trolleys.
This is an example in which insulated book trolleys T are arranged horizontally facing downward. 36 is a running rail for mobile electrical equipment;
It is fixed to the factory ceiling or the like via a gutter 37. The bracket 27 to which the clamp hanger H is attached is fixed to a gutter 37, for example. 3
Reference numeral 9 denotes a power collector of the mobile electric device, and the upper end brush portion of the collector 39 comes into contact with the power supply surface 1a of the contact wire 1 (FIG. 1).

(Function) First, as shown in FIG. 2, the mounting bolt 23 is inserted into the bolt insertion hole 21 in the upper wall of the first hanger member 5, and the coupling bolt 33 fitted with the coil spring washer 35 is inserted into the bolt insertion hole 21 in the upper wall of the first hanger member 5. 2 hanger member 6
the insertion hole 11 of the first hanger member 5 and the insertion hole 1 of the first hanger member 5
0 and lightly screwed into the nut 34 to bring the stopper parts 15 into contact with each other, and
Compress the coil spring washer 35 slightly.
The upper wall of the first hanger member 5 is fixed to the bracket 27 by inserting the mounting bolt 23 into the bracket 27 and tightening the nut 25.
At this time, the lower end heads of the mounting bolts 23 come into contact with the inner surfaces of both hanger members 5 and 6, thereby preventing the bolts 23 from rotating, so it is only necessary to rotate the nuts 25 with a wrench or the like.

With the coupling bolt 33 lightly tightened as described above, the engaging groove 4 on the left side of the insulation cover 2 in FIG. 2 is engaged with the claw part 8 of the first hanger member 5, and then the engaging groove 4 on the right Coil spring washer 35
The second hanger member 6 is pushed into the claw portion 8 of the second hanger member 6 against the elastic force of the second hanger member 6, and is engaged with the claw portion 8. Engagement groove 4 on the right side
When pushing in, the claw portion 8 of the second hanger member 6 opens slightly in the direction of the arrow X against the elastic force of the coil spring washer 35, and after the engagement is completed, the engagement is maintained by the elastic force of the coil spring washer 35. be done.

That is, the elastic force of the coil spring washer 35 holds it in a temporarily fixed state. In this state, adjust the straightness, etc. of the insulated trolley.

Next, the coupling bolt 33 is tightened to almost completely compress the coil spring washer 35 as shown in FIG. 1, and the insulating trolley is completely fixed.

Note that when tightening the coupling bolt 33, the nut 34 is prevented from rotating by the side wall of the recess 12.
Therefore, there is no need to hold the nut 34 in place with a wrench or the like during tightening work.

(Another Embodiment) (1) Brass, other metals, hard resin, etc. can also be used as the material for the hanger member.

(2) As the spring member, a cone spring or annular rubber can also be used.

(3) Fig. 7 shows another example of the arrangement, in which three insulating trolleys are arranged horizontally and vertically.

(4) All the hangers that support the insulated trolley may be the hangers of the present invention, but it is also possible to provide the hangers of the present invention at key points on the insulated trolley, and the rest to be provided with conventional hangers that utilize only elastic force. good.

(Effect of the invention) As explained above, the invention forms opposing claw parts 8, 8 at one ends of the pair of first and second hanger members 5, 6, respectively, for clamping the insulating cover. At the same time, stopper parts 15, 15 for regulating the width between the two claw parts are formed to face each other so as to be able to freely abut each other, and the other end has a concave groove 30 and a peak part 31 that engage with each other so as to be rotatable. A semicircular boss part 20 having a mounting bolt insertion hole 21 and a semicircular boss part 20 that fits into the boss part 20 has a semicircular boss part 20 having a mounting bolt insertion hole 21. Bolt insertion holes 10 and 11 are formed on the same center line in the central parts of both hanger members 5 and 6, and nuts are provided around the bolt insertion holes 10 of the first hanger member 5. A reinforcing rib 18 is formed on both sides of the bolt insertion hole 11 of the second hanger member 6 in the length direction of the contact wire.
A horizontal connecting bolt 33 inserted into 0 and 11,
Both hanger members 5 and 6 are tightened by a nut 34 disposed in the nut fixing recess 12 and screwed into the coupling bolt 33, and a compressible spring member 35 fitted into the coupling bolt 33. Therefore, it has the following advantages.

(1) By keeping the bolt 33 lightly tightened, the insulating trolley can be easily engaged with the claw part 8 in a so-called snap-in style against the elastic force of the spring member, and the elastic force of the spring member can be easily engaged. It can be held in a temporarily fixed state by force,
In this state, the straightness of the insulating trolley can be easily adjusted.

That is, it is possible to facilitate the work of fitting the insulating trolley and the work of adjusting the straightness.

(2) After adjusting the straightness, etc., the insulating trolley can be held securely by strongly tightening the connecting bolt 33 and almost completely compressing the spring member.
Therefore, there is no need to worry about the current collector or the like of a mobile electrical device coming off the hanger if it gets caught on the insulating trolley.

Furthermore, since the width between the claws 8 is regulated by the stopper part 15, there is no fear of damage to the insulating cover due to over-tightening of the bolts 33.

(3) Since one hanger member is tightened to the other hanger member by a horizontal connecting bolt and nut perpendicular to the insulating trolley, and a compressible spring member inserted into the connecting bolt,
There is no need to provide a special space within the hanger member for arranging the spring member, and compactness can be maintained.

Further, by fitting the spring member into the coupling bolt, the spring member can be attached at the same time as the coupling bolt, so that assembly is easy.

(4) Since the ends of the pair of hanger members opposite to the claw portions are formed with concave grooves, grooves, and peaks that engage each other in a rotatable manner, both hanger members can be connected with, for example, a pin. It is no longer necessary to have a complex structure in which the stopper part is used as a rotation fulcrum for positioning the stopper part, which is difficult to manufacture and disadvantageous in terms of strength.
Therefore, it is possible to position the stopper part with a very compact and inexpensive hanger member structure, which has great practical effects.

(5) Grooves 3 are provided at the other ends of the hanger members 5 and 6 on the opposite side from the claw portions 8 and 8 and are rotatably engaged with each other.
0 and a mountain portion 31, and the mountain portion 31 and the groove 3
The claw portions 8, 8 side portions can be rotated around the abutting portion with 0, and thereby,
When installing an insulated trolley between the claws,
The insulating trolley can be easily mounted without the hanger members 5 and 6 mutually shifting or rattling.

(6) A recess 12 for preventing the nut from turning is formed around the bolt insertion hole 10 of the first hanger member 5, and a tool for engaging the nut is not required during on-site bolt tightening work, so that the insulated trolley Temporary tightening work during straightness adjustment and subsequent final bolt tightening work become easier.

(7) Reinforcing ribs 18 are formed on both sides of the bolt insertion hole 11 of the second hanger member 6 in the length direction of the contact wire, and by guiding the connecting bolt 33 with the reinforcing rib 18, both hangers can be attached to the connecting bolt 33. By preventing the members 5 and 6 from shifting in the length direction of the contact wire, and by forming a semicircular boss portion 20 having a mounting bolt insertion hole 21 and a semicircular recess portion 21 that fits into the boss portion 20, Errors in parallelism between the two hanger members 5 and 6 can also be absorbed to some extent by rotating the boss portion 20 about the center. These allow the insulating trolley to be maintained in a stable state against errors during installation.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of a clamp hanger to which the present invention is applied (corresponding to the cross-sectional view of FIG. 5), FIG. 2 is a vertical cross-sectional view of the clamp hanger during temporary fixing work,
FIG. 3 is a view of the first hanger member as seen from the arrow in FIG. 1; FIG. 4 is a view of the second hanger member as seen from the arrow in FIG. 1;
The figure is a plan exploded view of the clamp hanger, and Figs. 6 and 7 are schematic vertical sectional views showing examples of the arrangement of insulating trolleys. 1... trolley wire, 2... insulating cover, 5, 6...
...First and second hanger members, 8...claw portion, 15...
... stopper portion, 20 ... semicircular boss portion, 21
. . . semicircular recess, 30 . . . groove, 31 . . ridge, 33 . . . bolt, 34 . . nut, 35 . . .
Coil spring washer (an example of a spring member).

Claims (1)

[Scope of utility model registration request] In a contact wire clamp hanger that supports an insulated trolley in which a conductor contact wire is covered with an insulating cover, one end of a pair of first and second hanger members 5 and 6 is provided with opposing sides for clamping the insulating cover. The claw portions 8, 8 are respectively formed, and stopper portions 15, 15 for regulating the width between the two claw portions are formed facing each other so as to be able to freely come into contact with each other, and at the other end,
A concave groove 30 and a ridge portion 31 are formed that rotatably engage with each other, and the claw portions 8, 8 side portions can be rotated around the contact portion between the crest portion 31 and the concave groove 30 to open them. In addition, a semicircular boss portion 20 having a mounting bolt insertion hole 21 and a semicircular recess portion 21 that fits into the boss portion 20 are formed, and a bolt insertion hole 10 is formed in the center of both hanger members 5 and 6. . A reinforcing rib 18 is formed therein, a horizontal connecting bolt 33 is inserted through the bolt insertion holes 10 and 11 , and a nut 34 is disposed in the nut fixing recess 12 and screwed into the connecting bolt 33.
A clamp hanger for a contact wire, characterized in that both hanger members 5 and 6 are tightened by a compressible spring member 35 fitted into the coupling bolt 33.