JP3012057B2 - Automatic rope feeding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a cable for use in extending a transmission line, which is used by an operator on an elevated tower to lift a rope from the ground and send it out to a predetermined position along the electric wire. The present invention relates to a wire wire lifting device.

[0002]

2. Description of the Related Art Japanese Patent Application No. Hei.
-122797 is known. Since only one of the pair of rollers rotates on its own axis and the other is for pressing, slippage is unavoidable and the rope is not reliably fed. Also, a screw rod is fixed to the support frame of the pressing roller, and the support frame is pressed forward by rotation of a nut screwed with the screw rod,
Because it is a structure that switches to pressing by a spring at a predetermined position,
In addition to the increase in the overall length of the device, the setting of the switching point is also difficult. When inserting or removing the rope between the opposing rollers, there is also an inconvenience that the opening / closing bracket 15a needs to be attached and detached each time.

[0003]

The number of opposed rollers is increased to four, and all of them are rotated. For this reason, each roller is rotated from a pair of drive shafts connected by gears. A gap is required between both rollers to insert the rope, and the gap is closed. Until a certain pressing force is applied, all can be done by one lever operation. .

[0004]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, a frame 1 has a U-shaped fixed case 2 fixed to the upper surface, the lower surface can be attached to a structure, and
An engine E and a reduction gear G are provided. The fixed case 2 has blocks 1a and 1b fixed to the upper surface of the lower side. The U-shaped movable case 3 is located on the frame 1 with the opening surface facing the fixed case 2, and two blocks 3 a and 3 b are fixed to the bottom with the block 1 b sandwiched therebetween. The guide bar 4 is composed of blocks 1a, 1b, 3
a, 3b, both ends are stopped by nuts, and a spring a is inserted between the two blocks 1a, 3a. That is, the movable case 3 can advance and retreat along the guide bar 4 for a predetermined length, but is always urged away from the fixed case by the spring a.

Drive shafts 5 and 6 are supported by the fixed case 2, and drive gears A and B meshing with each other are fixed to each other (FIG. 3). The rotation of the engine E is transmitted to the drive shaft 5 via the reduction gear R. Driven shafts 7 are supported on both sides of the drive shaft 5, and driven gears 8 and rollers 9 are fixed to the driven shafts 7, respectively.
The movable case 3 has a groove 3d that allows the drive shaft 6 to pass therethrough so that the movable case 3 can advance and retreat in the fixed case direction without contact with the drive shaft 6. A driven shaft 7 is rotatably supported at a position corresponding to both sides of the drive shaft 6, and a driven gear 8 and a roller 9 are similarly fixed to this shaft. That is, when the movable case separates from the fixed case, the engagement between the drive gear B and the driven gear 8 is released. Conversely, when the movable case approaches, the two gears mesh with each other, and at this time, the rollers 9 on both sides opposing each other hold the rope R correspondingly. The line connecting the centers of the drive gears A and B is appropriately inclined with the line connecting the drive shafts 5 and 6 and the driven shaft 7, so that the holding by the corresponding rollers is further ensured.

[0006] The U-shaped bracket 10 can lock the U-shaped base to the engaging piece 3c on the movable case, and its both legs have a diametrically perforated shaft 1c.
The two holes 1 are inserted so as to be freely inserted and removed. A spring b is inserted into both legs, and the spring pressure can be adjusted with a nut 12 at the end. One end of the lever 13 is pivotally supported by a shaft 14 on a fixed case, the perforated shaft 11 is pivotally supported at the center, and the other end is curved as a handle. That is, when the lever 13 is swung, the perforated shaft 11 advances and retreats on both legs of the U bracket, and presses or loosens the spring b.

[0007]

When the lever 13 is erected upright as shown in FIG. 6, the spring b is loosened and the bent base of the U fitting comes off the engaging piece 3c. The rope R is inserted between the corresponding rollers, and the U fitting and the engaging piece are re-engaged. When the lever is turned in the direction of the hour hand as shown in FIG.
The movable case is pulled toward the fixed case against the tension of.
At this time, the driven gear 8 of the movable case is in a normal meshing position with the driving gear B, and both rollers clamp the rope R.
The lever end is locked to a locking tool 1c provided on the frame.
Thereafter, when the engine E is driven, the sending of the rope by the rollers on both sides starts.

[0008]

[Other Embodiment] In FIG. 2, the shaft supporting case of the drive shaft 6 is changed to the movable case 3, and the drive gear B is always engaged with the driven gear 8 in the movable case. It is obvious that, even in this configuration, if the movable case is advanced, the same operation as in the above-described embodiment is performed. The difference is whether the two drive gears A and B are separated from each other, but the drive gear B and the corresponding driven gear are separated from each other. The latter is more convenient in view of the difficulty of the tooth tip alignment.

[0009]

[Effect] Since all four corresponding rollers are driven on the left and right sides, the rope can be reliably sent out. Since the pinching pressure of the rope by the roller is always applied by the spring, the apparatus is small and lightweight. All operations can be performed with a single lever.

[0010]

[Brief description of the drawings]

FIG. 1 is a front view of the device.

FIG. 2 is a plan view showing the arrangement of gears and rollers.

FIG. 3 is an end view of a TT section.

FIG. 4 is an end view of an SS section.

FIG. 5 is a plan view showing a structure near a lever.

FIG. 6

FIG. 7 is an explanatory diagram of the operation of the lever.

[0011]

[Explanation of symbols]

 E Engine G Reduction gear R Rope a, b Spring A, B Drive gear 1 Frame 1a, 1b Block 1c Engagement tool 2 Fixed case 3 Movable case 3a, 3b Block 3c Engagement piece 3d Groove 4 Guide bar 5, 6 Drive shaft 7 driven shaft 8 driven gear 9 roller 10 U bracket 11 perforated shaft 12 nut 13 lever 14 shaft

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-51-212993 (JP, A) JP-A-2-131308 (JP, A) JP-A-2-303306 (JP, A) JP-A-3-3 98409 (JP, A) Japanese Unexamined Patent Publication No. 3-128608 (JP, A) Japanese Utility Model Application No. Sho 59-16069 (JP, U) Japanese Utility Model Application No. Sho 61-165011 (JP, U) Japanese Utility Model Application No. Sho 63-143667 (JP, U) 63-190256 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H02G 1/00-1/10

Claims (1)

(57) [Claims] 1. A frame that can be fixed to a structure and has an engine and a reduction gear, a U-shaped fixed case fixed to the frame, and a fixed case and an opening surface are opposed to each other to be able to advance and retreat on the frame toward the fixed case. A movable case of a U-shape urged away from the fixed case by an attached spring a, and a drive shaft 5 which is supported by the fixed case and is driven via the speed reduction gear with the drive gear A fixed thereto. The drive shaft 6 includes a drive shaft 6 which is rotatably supported by the drive gear A and is fixedly engaged with the drive gear A, and a driven gear and a roller which are supported by a fixed case and a movable case and mesh with the drive gears A and B, respectively. A driven shaft, and a pair of springs
A clear shaft with this spring inserted into both legs so that it can be pressed toward the leg end
U bracket attached to the movable case at the bending base
And one end is locked to the fixed case,
An automatic rope feeding device, comprising a lever supported on a shaft, wherein a roller on a driven shaft grips the rope when the driving gears A and B and the driven gear are normally engaged.