JPH1032906A - Roller device for extending cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily extend a plurality of cables and drop down the cables in a cable track at once in a set by supporting a roller shaft in a prescribed direction when a handle is pushed down and connecting points fall in line with each other, and by tilting the roller shaft at a prescribed angle when the handle is pulled up. SOLUTION: A toggle clamping means 6 is set so that the means 6 can support a roller shaft 2 in a prescribed direction when a handle 10 is pushed down and the connecting points of pins 15, 13, and 14 fall in line with each other, and can tilt the shaft 2 at a prescribed angle, for example, 30 deg. from a prescribed direction when the handle 10 is pulled up. In addition, a cylindrical rubber 25 which is an elastic body that comes into contact with the roller shaft 2 when the shaft 2 is tilted at the angle of 30 deg. is provided in a support frame 5 below the shaft 2. Therefore, a roller device does not shake when the shaft 2 is tilted at the angle of 30 deg. and the workability of the extending and laying work of cables can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller device for extending a cable, and more particularly, to a roller device for extending a plurality of cables.

[0002]

2. Description of the Related Art Conventionally, a roller device which is directly mounted on a cable rack and extends a cable has been used in order to extend the cable in a passageway or the like. Since a plurality of the roller devices are arranged on the cable rack at a distance, the cable can be smoothly extended.

In order to extend a cable into a sinus passage or the like, three rollers are connected so as to form an equilateral triangle, and a three-roller provided with a roller opening / closing mechanism at one of the three connecting portions. The device is being used. By arranging a plurality of such three-roller devices on a cable rack in a canal at a distance, the rollers that can be opened and closed after extending the wire can be opened and closed to drop the cable into the cable rack. Cables can be laid sequentially.

Further, in order to extend a cable into a cave or the like, a plurality of cable extension jigs arranged at a distance are remotely operated to open and close the cable, and the cable can be dropped. An apparatus has been proposed (Japanese Utility Model Laid-Open No. 4-134111). In this cable drawing device, the roller opening / closing mechanism, which can be divided into two, is opened and closed by the electromagnetic coil, so that the roller below the cable passage can be opened and closed by remote control. Thus, the cables can be dropped into the cable rack by opening and closing the rollers that can be opened and closed after the wire is drawn, so that a plurality of cables can be sequentially laid.

[0005]

However, in the roller device directly mounted on the cable rack, the roller device is disturbed when the cable is set on the cable rack after the extension, so that the roller device is removed from the cable rack. Or remove the cable from the roller device and set the cable on a cable rack.

In a three-roller apparatus provided with a roller opening / closing mechanism at one of three connection portions, a plurality of cables can be dropped into a cable rack while being arranged, but a plurality of cables can be dropped at one time. It was not suitable for cable laying work such as extending a set. Furthermore, a cable extension device that can open and close the lower roller by remote control can drop a plurality of cables into a cable rack while being arranged in the same manner as a three-roller device, but the roller opening and closing mechanism becomes complicated. Therefore, there were difficulties in handling and installation workability.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described conventional problems. A plurality of cables can be extended at a time with a simple structure, and the cables can be easily extended after the extension. An object of the present invention is to provide a roller device for cable extension that can be dropped into a cable rack.

[0008]

According to the present invention, there is provided a roller device for cable extension which achieves the above object, comprising: a roller shaft;
A plurality of cable-rolling rollers rotatably mounted on the roller shaft, a support frame on which a roller shaft mounted with the plurality of cable-rolling rollers is mounted, and a support frame provided on the support frame; Toggle clamp means for rotating the roller shaft mounted on the shaft at a predetermined angle, and fixed clamp means for fixing the support frame at a predetermined position corresponding to the extending position of the cable, the toggle clamp means being formed by an operating arm A handle having one end of the operation arm pivotally attached to the support frame, and one end serving as a point of action of a roller shaft one of which is pivotally attached between one end and the other end of the operation arm of the handle and the other of which is pivotally attached to the support frame. A toggle joint mechanism comprising a link which is pivotally mounted on the roller shaft. The toggle joint mechanism pushes down the handle to move the roller shaft in a predetermined direction when each connection point is aligned. The roller shaft when raising the lifting and handle those configured to be inclined at a predetermined angle.

In the roller device for extending a cable according to the present invention, when the roller shaft is tilted at a predetermined angle with a handle, an elastic body abutting on the roller shaft is provided in a lower portion of the roller shaft in the support frame. It is a thing.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the cable extension roller device of the present invention will be described below with reference to the drawings. As shown in FIGS. 1, 2, and 3, a roller device for cable extension according to an embodiment of the present invention includes a roller shaft 2,
A plurality of cable extension rollers 3, 4 rotatably mounted on the roller shaft 2, and a plurality of cable extension rollers 3,
Frame 5 on which the roller shaft 2 with the shaft 4 is mounted
A toggle clamp means 6 provided on the support frame 5 for rotating the roller shaft 2 mounted on the support frame 5 at a predetermined angle, and fixing the support frame 5 at a predetermined position corresponding to the extending position of the cable. And a rack clamp 7 serving as a fixed clamp means.

The roller shaft 2 is made of metal, and a groove is cut at a predetermined position to fit a retaining ring for mounting the plurality of cable extension rollers 3 and 4 so that they can roll on the shaft. . As shown in FIG.
A dry bearing 8 is fixedly fitted to the inner peripheral surface of a plastic material. This dry bearing 8
One end 8a is extended like a flange along the end face of the cable extension roller 3. Thereby, each cable extension roller 3 can be independently rolled on the roller shaft 2.

In order to prevent a cable (not shown) to be extended from coming off, flanges 4a are formed on the cable extending rollers 4 at both ends. And the dry bearing is fixedly fitted. The roller shaft 2 on which the plurality of cable extension rollers 3 and 4 are rotatably mounted as described above,
The support frame 5 is attached to the upper portion 5a of the support frame 5 by a pin 9. The plurality of cable extension rollers 3 and 4 are located on the front side of the support frame 5.

The toggle clamp means 6 comprises a toggle 10 comprising a handle 10 on which an operating arm 11 is formed and a link 12.
It has a joint mechanism. The operation of the operating arm 11 of the handle 10 will be described in detail.
One end 11a is mounted on a mounting stay 5b provided behind the support frame 5 by a pin 15. One end 12a of the link 12 is pivotally mounted between the one end 11a and the other end 11b of the operating arm 11 of the handle 10 with a pin 13.
The other end 12b is axially attached to one end 2a serving as a point of action of the roller shaft 2 axially attached to the support frame 5 with a pin 14.

The toggle clamp means 6 configured as described above pushes down the handle 10 to support the roller shaft 2 in a predetermined direction when the connecting points of the pins 15, 13 and 14 are aligned, and the handle 10 is held down. The roller shaft 2 is set to be inclined at a predetermined angle, for example, at an angle of 30 degrees from a predetermined direction when the roller shaft 2 is pulled up. When the roller shaft 2 is tilted at an angle of 30 degrees by the handle 10, a cylindrical rubber 25, which is an elastic body that comes into contact with the roller shaft 2, is provided below the roller shaft 2 in the support frame 5. I have. Thus, the roller shaft 2 does not rattle when inclined at an angle of 30 degrees.

The rack clamp 7 is provided with a clamp body 17 to which the upper clamp pawl 16 is fixed, and an adjusting bracket 19 slidably fitted to the clamp body 17 provided with a lower clamp pawl 18 opposed to the upper clamp pawl 17. A fixing bolt 20 for moving the adjustment fitting 19 and fixing the adjustment fitting 19 to the clamp body 17 in a state where the main girder 22 of the cable rack 21 to be clamped is clamped by the lower and upper clamp claws 18 and 16. Consists of Specifically, the clamp body 17 of the rack clamp 7 is bolted to a mounting plate 5c extending below the support frame 5. An upper clamp pawl 16 is provided above the clamp body 17, and a concave portion 23 is formed at the center thereof. An L-shaped adjustment bracket 19 is fitted into the recess 23 so as to be vertically movable. The central portion of the adjustment fitting 19 is pivotally supported by the clamp body 17 in the recess 23 by the pin 24, and the adjustment fitting 1
A fixing bolt 20 is screwed into the upper part of the screw 9. Also,
A lower clamp claw 18 is provided at a lower portion of the adjusting bracket 19 so as to face the upper clamp claw 16.

The manner of use of such a rack clamp 7 will be described. The upper clamp claw 16 of the clamp body 17 is engaged with the upper part of the main girder 22 of the cable rack 21, and the adjusting bracket 19 is turned around the pin 24. By turning clockwise, the lower clamp claw 18 is engaged with the lower part of the main girder 22. In this state, since the adjusting bracket 19 rotates, the fixing bolt 20 is tightened, and the tip of the fixing bolt 20 is brought into contact with the concave portion 23 of the clamp body 17. As a result, the rotation of the adjusting bracket 19 is restricted, and the parent girder 22 is reliably sandwiched between the upper and lower clamp claws 16 and 18, and the cable extension roller device 1 is fixed to the parent girder 22 of the cable rack 21. I do. Therefore, attachment / detachment of the cable extension roller device 1 to / from the cable rack 21 is simplified.

A pin hole 17a is provided in the lower portion of the clamp body 17, and when the length of the main girder is large, the adjusting bracket 19 is moved downward to be pivotally supported by the pin 24 at the position of the pin hole 17a. As described above, it is fixed to the parent girder having a large dimension. Roller device 1 for cable extension constructed as described above
Will be described below.

When the handle 10 of the toggle clamp means 6 of the cable extending roller device 1 previously arranged at a distance from the parent girder 22 of the cable rack 21 is pushed down, the link 12 is pulled down about the pin 15. When the link 12 is pulled down, the roller shaft 2 rotates clockwise about the pin 9. And pin 15, pin 1
The roller shaft 2 is supported in a predetermined direction when the connection points of the pin 3 and the pin 14 are aligned. At this time, the roller shaft 2 is fixed by the toggle joint mechanism so as to have sufficient strength to support the loads of the plurality of cables. Further, the roller device 1 for cable extension is a cable rack 21.
, The roller shaft 2 is fixed horizontally. In this state, a plurality of cables are set at a time and extended.

After the wire is drawn, when the handle 10 of the toggle clamp means 6 is pulled up, the link 12
When the link 12 is pushed up, the roller shaft 2 rotates counterclockwise about the pin 9.
As a result, the roller shaft 2 is inclined, so that the cables on the cable extension rollers 3 and 4 can be dropped into the cable rack 21 and laid. The roller shaft 2
Stops when it is tilted at an angle of 30 degrees from the horizontal position by the toggle joint mechanism. At this time, the roller shaft 2
Since the cable abuts against the cylindrical rubber 25, the cable can be dropped into the cable rack 21 in a stable state without play.

After the extension, the roller shaft 2 is supported horizontally by pushing down the handle 10 so that
Preparation for the extension of the next cable becomes possible.

[0021]

As described above, according to the roller device for extending a cable according to the present invention, a plurality of extended cables are set at one time, and the cable rack is easily operated by a handle of a simple toggle joint mechanism. The cable can be dropped and laid, and when the cable is to be extended again, the extension can be prepared simply by pushing down the handle. As described above, the wire drawing and laying can be performed easily and in a short time with a simple structure, so that the workability of the cable drawing and laying can be greatly improved.

[Brief description of the drawings]

1A and 1B are configuration diagrams of a roller device for cable extension according to the present invention, wherein FIG. 1A is an operation diagram when a cable is extended, and FIG.
Fig. 4 is an operation diagram when a cable is dropped into a cable rack.

FIG. 2 is a sectional view showing an upper part of the roller device for cable extension according to the present invention.

FIG. 3 is a side view showing a roller device for cable extension according to the present invention.

FIG. 4 is a cross-sectional view showing a mounted state of a cable drawing roller used in the cable drawing roller device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Roller device for cable extension 2 ... Roller shaft 2a ... One end 3, 4 ... Roller for cable extension 5 ... Support frame 6 ... Toggle clamp means 7 ... Rack clamp (fixed clamp means) 10 ... Handle (Toggle joint mechanism) 11 ... Operation arm 11a ... One end 11b ... Other end 12 ... Link (toggle joint mechanism) 12a ... One 12b ... The other 25 ... Cylindrical rubber (elastic body)

Claims (2)

[Claims] 1. A roller shaft, a plurality of cable extending rollers rotatably mounted on the roller shaft, and a support on which the roller shaft mounted with the plurality of cable extending rollers is mounted. A frame, a toggle clamp means provided on the support frame and pivotally rotating the roller shaft mounted on the support frame at a predetermined angle, and fixing the support frame at a predetermined position corresponding to the extending position of the cable. Fixed toggle means, wherein the toggle clamp means is provided with a handle having an operation arm formed at one end of the operation arm, and one end is provided between the one end and the other end of the operation arm of the handle. A toggle joint mechanism comprising: a shaft pivotally attached to one end of the roller shaft, which is pivotally attached to the support frame and the other end of which is an action point of the roller shaft. The mechanism is configured to push down the handle, support the roller shaft in a predetermined direction when each connection point is aligned, and tilt the roller shaft at the predetermined angle when the handle is pulled up. Roller device for cable extension. 2. An elastic body which abuts on the roller shaft when the roller shaft is tilted at the predetermined angle by the handle, is provided in a lower portion of the roller shaft in the support frame. 2. The roller device for cable extension according to 1.