JP2000335285A - Hanger for insulated trolley line - Google Patents

Abstract

PROBLEM TO BE SOLVED: To satisfy mounting work efficiency, holding force, assemblability of an insulated trolley line by disposing a ratchet-pawl type latching mechanism capable of latching the insulated trolley line temporarily at a holding portion between leg portions of both first and second clamp members when they are closed. SOLUTION: A device 1 chiefly comprises a first clamp member 2 and a second clamp member 3. The first and second clamp members 2, 3 are of an inverted L-shape with holding portions 10, 11 which are formed with a projection and recess in accordance with a sideface shape of an insulated trolley line 31 at lower inside of vertical legs 8, 9. Further, a latching mechanism of the first and second clamp members 2, 3 make the both clamp members fixed by latching a ratchet pawl of a latching projection 6 of the second clamp member 3 with a latching recess 7 of the first clamp member 2. The first and second clamp members 2, 3 can be made of synthetic resin or metal such as aluminum or the like. With this configuration, workload to the operator is significantly decreased and working safety is also improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulated trolley wire hanger.

[0002]

2. Description of the Related Art Generally, an insulated trolley wire is installed on a ceiling of a factory or the like together with rails of a mobile electric device such as a hoist or a crane, and is used to supply power to the mobile electric device. Such an insulated trolley wire is held by an insulated trolley wire hanger fixed to a building-side bracket or the like.

Various types of trolley wire hangers have been proposed and put into practical use because of the workability of attaching the trolley wire and the need for reliable and stable power supply to mobile electrical equipment. As shown in FIG. 6, the insulating trolley wire hanger having a simple structure is fitted with a metal clamp 41, the insulating trolley wire 44 is fitted thereto, and the clamp 41 is tightened with the lateral tightening bolts 42. Some are designed to be pinched. However, in the insulation trolley wire hanger of this structure, in the installation work of the insulation trolley wire,
The worker must insert the heavy insulating trolley wire 44 into the holding portion 43 of the hanger and tighten the clamp 41 with the lateral tightening bolt 42 while supporting it, so that there is a high risk in working at a high place. Accompany.

In order to solve this problem, there has been proposed an insulated trolley wire hanger having a structure in which the insulated trolley wire can be temporarily fixed to the insulated trolley wire hanger. For example,
Japanese Utility Model Publication No. 53-52638 discloses an insulated trolley wire hanger having a built-in spring 54 for closing the clamp 51 inside at a position different from the lateral tightening bolt 52 as shown in FIG. . However, in the insulated trolley wire hanger of this structure, an increase in the manufacturing cost of the hanger itself is inevitable, such as by providing a special space for storing a spring.

Further, there has been proposed an insulated trolley wire hanger for facilitating not only the work of attaching the insulated trolley wire but also the work of removing it. For example, Shokai 5
In the insulated trolley wire hanger disclosed in 8-192130, as shown in FIG. 8, the clamp 61 is made of a synthetic resin having an elastic structure, and is fitted into a hanger fitting 62 provided with mounting bolts. And To attach the insulated trolley wire 65 to the insulated trolley wire hanger, it is sufficient to simply insert the trolley wire into the opening 63, and to remove it, the notch hole 64 provided in the upper part of the clamp 61 is used with a fingertip. The trolley wire pinched by the hanger can be easily removed simply by pinching and narrowing. However, with the insulation trolley wire hanger of this structure, there is a problem with the clamping force of the insulation trolley wire, and it becomes difficult to have a clamping force enough to prevent the trolley wire from detaching from the hanger when the trolley wire is slightly large. When the current collector of the mobile device is caught by something, the insulating trolley wire may be detached from the hanger.

[0006]

As described above, the insulated trolley wire hanger based on the prior art has a high workability in mounting the insulated trolley wire, a clamping force of the insulated trolley wire hanger, an assembling property, a manufacturing cost, and the like. It is not satisfactory when evaluated comprehensively.

[0007]

SUMMARY OF THE INVENTION The present invention is to solve the problem of the insulated trolley wire hanger based on the prior art. That is, the hanger for an insulating trolley wire according to the first invention comprises a first clamp member and a second clamp member,
An insulated trolley wire hanger which is rotatably connected about a connecting fulcrum provided on upper portions of both clamp members and has an openable and closable clamp member leg as a holding portion of an insulated trolley wire, wherein a first clamp is provided. An insulated trolley wire provided with a ratchet claw-type locking mechanism that can temporarily fix the insulated trolley wire between the clamp member legs when the member and the second clamp member are closed. Hanger for

According to a second aspect of the present invention, there is provided an insulated trolley wire hanger according to the first aspect, wherein the locking mechanism of the insulated trolley wire hanger is provided in a through hole provided in one clamp member and in the other clamp member. A hanger for an insulated trolley wire, wherein a umbrella-shaped rod-shaped body at the tip is inserted so as not to come out in the opposite direction.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment of the present invention. FIG. 1A is a front view of a hanger for an insulating trolley wire in a state where the insulating trolley wire is sandwiched.
(B) is a right side view thereof, and FIG. 1 (c) is a plan view. FIG. 2 shows the first clamping member 2 before clamping the insulating trolley wire.
FIG. 4 is a front view of the insulating trolley wire hanger in a state where the second clamp member 3 is opened. FIGS. 3A and 3B
FIG. 3 is a perspective view showing the structures of a first clamp member 2 and a second clamp member 3 individually.

In the hanger 1 for an insulating trolley wire according to the present invention shown in FIG. 1, a first clamp member 2 and a second clamp member 3 are used as main members. First clamp member 2
As shown in FIGS. 1 (a) and 3 (a),
And a vertical leg 8, and a support boss 5 provided on a horizontal portion 13 of the second clamp member 3, which will be described later, is fitted near an intersection of the horizontal portion 12 and the vertical leg 8. A support shaft fitting recess 4 is formed. On the lower inner side of the vertical leg 8, irregularities corresponding to the side shape of the insulating trolley wire 31 are formed, and the holding portion 10 on one side of the insulating trolley wire is formed.
And The vertical leg 8 above the holding portion 10 is provided with a locking recess 7 for locking a locking projection 6 of the second clamp member 3 described later, and the locking recess 7 and a locking projection described later. 6 constitute a locking mechanism (see FIGS. 4A and 4B). In the center of the horizontal portion 12, a mounting bolt hole 14 through which the mounting bolt 21 passes and a detent groove 15 (shown in FIGS. 1B and 3A) for the mounting bolt 21 are provided. ing.

The second clamp member 3 is shown in FIGS.
As shown in FIG. 2B, the horizontal portion 13 has an inverted L-shape including a horizontal portion 13 and a vertical leg portion 9, and the horizontal portion 13 has a gentle slope that becomes lower in the direction of the vertical leg portion 9. At the left end of the horizontal portion 13, a spindle boss 5 that is fitted into the spindle fitting recess 4 provided on the horizontal portion 12 of the first clamp member 2 is formed. On the lower inner side of the vertical leg 9, as in the case of the first clamp member 2, irregularities corresponding to the side surface shape of the insulated trolley wire 31 are formed to form a holding portion 11 on the other side of the insulated trolley wire 31. On the vertical leg 9 above the holding portion 11, a locking projection 6 is provided for locking in the locking recess 7 of the first clamp member 2. By locking the locking projections 6 to the locking recesses 7, the insulating trolley wire is temporarily fixed.

That is, as shown in an enlarged manner in FIG. 4, the locking mechanism of the first clamp member 2 and the second clamp member 3 includes a locking projection 6 of the second clamp member 3, that is, a ratchet claw.
The first clamp member 2 and the second clamp member are fixed by hooking on the locking recess 7 of the first clamp member 2.

FIG. 5 shows an embodiment of the locking mechanism according to the second invention. In other words, a method is provided in which a through hole 26 is provided in one clamp member, and a bar-shaped body 25 having an umbrella-shaped tip provided in the other clamp member is inserted into the clamp member so that it does not come off in the opposite direction.

A receiving base 16 is provided inside the vertical leg 9 of the second clamp member 3 so as to prevent the mounting bolt 21 from being dropped from the mounting bolt hole 14 before being tightened by the nut 22 (see FIG. 2). 1 (a) and 3 (b)). In the vertical legs 8, 9 of the first and second clamp members 2, 3, horizontal tightening bolt insertion holes 17, 18 through which horizontal tightening bolts 19 are inserted.
Through.

A hanger 1 for an insulated trolley wire according to the present invention.
Is assembled by fitting the support boss 5 of the second clamp member 3 into the support fitting recess 4 of the first clamp member 2 and joining them together. The vertical legs 8 and 9 can be freely opened and closed. Second clamp member 3
The upper surface of the second clamp member 3
Is opened upward, the upper surface of the second clamp member 3 does not hit the mounting beam of the insulated trolley wire hanger 1 to prevent opening and closing. First and second clamp members 2, 3
Since both vertical legs 8 and 9 can be opened and closed, when both vertical legs 8 and 9 are open, the insulating trolley wire 31 can be easily inserted into the open insulating trolley wire holding portion 30, When the vertical legs 8 and 9 are forcibly closed so as to press against each other, a locking mechanism provided above the insulating trolley wire holding portion 30 operates (the locking projection 6 is fitted into the locking recess 7). The opening of the parts 8 and 9 is restrained. Locking projection 6
Is inserted into the locking recess 7, the insulating trolley wire holding portions 10 and 11 on the lower inner side thereof face each other, and the insulating trolley wire 3
Since the insulation trolley wire 31 is in a shape capable of being sandwiched from the side surface, the insulation trolley wire 31 is temporarily fixed, and does not easily fall off the insulation trolley wire hanger 1.

Next, the operation of attaching the insulated trolley wire to the ceiling or the like using the insulated trolley wire hanger 1 according to the present invention will be described. First, the mounting bolt hole 14 of the first clamp member 2
The mounting trolley wire hanger 1 is assembled by fitting the support boss 5 of the second clamp member 3 into the support shaft fitting recess 4 of the first clamp member 2 after passing the mounting bolt 21 through the mounting bolt 21. It is fixed to a ceiling beam or the like with the mounting bolts 21 and the mounting nuts 22. A state is opened between the first clamp member vertical leg 8 and the second clamp member vertical leg 9 of the insulating trolley wire hanger 1 (FIG. 1B).
Therefore, it is easy to insert the insulating trolley wire 31 into the opened insulating trolley wire holding portion 30 in the opened state. When the insulating trolley wire 31 is inserted into the insulating trolley wire holding portion 30, the first clamp member 2 and the second clamp member 3 are forcibly closed so that both clamp member vertical legs 8 and 9 sandwich the insulating trolley wire 31. Then, the locking projection 6 of the second clamp member 3 is fitted into the locking recess 7 of the first clamp member 2, and the holding portion 30 is fixed in a closed state. Accordingly, in this state, the insulation trolley wire 31 is temporarily fixed, so that the worker does not fall out without supporting the insulation trolley wire 31 by hand. This temporary fixing is performed in the second position shown in FIG.
The same applies to the case where the hanger for the insulating trolley wire having the locking mechanism according to the invention is used. Next, when the first clamp member 2 and the second clamp member 3 are tightened with the lateral tightening bolts 19 and nuts 20 of the insulating trolley wire hanger 1, the insulating trolley wire 31 is completely clamped in the clamping portion 30, and Even if external force is applied to the trolley wire 31,
It does not come off from the insulated trolley wire hanger 1. Since the worker can tighten the lateral tightening bolts 11 without supporting the insulating trolley wire, the burden on the worker is remarkably reduced and the safety of the work is improved.

The first and second clamp members may be made of a synthetic resin or a metal such as aluminum. However, in order to ensure electrical insulation between the insulation trolley wire hanger and the insulation trolley wire, when the clamp member is made of metal, the contact portion with the insulation trolley wire is insulated. It is desirable to keep. The insulated trolley wire hanger 1 according to the present invention is simple in shape, can be manufactured by molding a synthetic resin or casting metal, and does not require any accessories other than bolts and nuts. can do.

[0018]

As described above, by using the hanger for the insulating trolley wire of the present invention, the workability of mounting the insulating trolley wire, the clamping force of the insulating trolley wire, the assembling property, the manufacturing cost, etc., which have been considered as problems in the past, can be obtained. Various problems can be solved.

[Brief description of the drawings]

FIG. 1A is a front view showing a state in which an insulating trolley wire of a hanger for an insulating trolley wire according to the present invention is sandwiched.
(B) is a right side view of the insulated trolley wire hanger according to the present invention. (C) is a top view of the hanger for insulating trolley wires which concerns on this invention.

FIG. 2 is a front view showing a state before the insulating trolley wire of the hanger for the insulating trolley wire according to the present invention is sandwiched.

FIG. 3A is a perspective view of a first clamp member 2 of the insulated trolley wire hanger according to the present invention. (B) is a perspective view of the second clamp member 3 of the insulated trolley wire hanger according to the present invention.

FIG. 4A is a front view showing a first embodiment of a locking mechanism for a hanger for an insulating trolley wire according to the present invention. (B)
FIG. 2 is a cross-sectional view taken along the line AA ′ in FIG.

FIG. 5 is a cross-sectional view showing a second embodiment of the locking mechanism of the insulated trolley wire hanger according to the present invention.

FIG. 6 is a front view of an insulated trolley wire hanger (1) according to the prior art.

FIG. 7 is a sectional view of a hanger (2) for an insulating trolley wire according to the prior art.

FIG. 8 is a sectional view of a hanger (3) for an insulating trolley wire according to the prior art.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Insulated trolley wire hanger 2 1st clamp member 3 2nd clamp member 4 support shaft boss 5 support shaft fitting recess 6 locking protrusion 7 locking recess 8 1st clamp member vertical leg 9 2nd clamp member vertical leg 10 1st clamp member insulating trolley wire holding section 11 2nd clamp member insulating trolley wire holding section 12 1st clamp member horizontal section 13 2nd clamp member horizontal section 14 Mounting bolt hole 15 Mounting bolt hole detent groove 16 Mounting bolt receiving stand Reference Signs List 17 First clamp member horizontal tightening bolt insertion hole 18 Second clamp member horizontal tightening bolt insertion hole 19 Horizontal tightening bolt 20 Horizontal tightening bolt nut 21 Mounting bolt 22 Mounting bolt nut 25 Clamp member locking umbrella bar 26 Stop-through hole 31 Insulated trolley wire 41 Prior art insulated trolley wire hanger (1) Lamp 51 Clamping of a prior art insulated trolley wire hanger (2) 54 Spring of a prior art insulated trolley wire hanger (2) 61 Insulating clamp of a prior art insulated trolley wire hanger (3) 62 Prior art insulated trolley Wire hanger (3) hanger bracket 64 Notch hole of conventional insulated trolley wire hanger (3)

Claims (2)

[Claims] 1. A first clamp member and a second clamp member are rotatably connected about a connecting fulcrum provided on upper portions of both clamp members, and an insulated trolley wire is provided between legs of the openable and closable clamp members. An insulated trolley wire hanger serving as a holding portion, wherein a ratchet claw capable of temporarily fixing an insulating trolley wire to an insulating trolley wire holding portion between both clamp member legs when the first clamp member and the second clamp member are closed. An insulated trolley wire hanger provided with a locking mechanism of the type. 2. The insulated trolley wire hanger according to claim 1, wherein a locking mechanism for closing the first clamp member and the second clamp member is provided in a through hole provided in one clamp member and the other clamp member. A hanger for an insulated trolley wire, wherein a tip-shaped umbrella-shaped rod provided on a member is inserted so as not to come off in the opposite direction.