JPH034094Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field of the Invention) The present invention relates to a cable feeding device used for cable laying work, etc.

(Technical background of the invention and its problems) The applicant of this application first devised the cable feeding device shown in Figures 3A and B for use when laying cables in tunnels, etc., and applied for utility model registration. (Jitsugan 57-123184, Jikko 63-1534)
issue). This device is a rotating body 2 that sends out a cable 1.
and the tightener 3 are connected with the connecting rod 4, and the tightener 3 is connected with the connecting rod 4.
A pressing force is naturally applied to the cable 1 due to its own weight. However, this cable feeding device does not require a lifting mechanism for the tightener and does not require an operating part such as a handle to drive the mechanism, so it has the unique performance of being simple in structure and compact. However, there were the following disadvantages. That is, since the tightener 3 cannot apply an appropriate pressing force to the cable 1, it may not be possible to feed out the cable 1 more efficiently, and the cable cannot be adjusted according to the outer diameter of the cable to be fed out. The scope of application is narrow.

(Purpose of the invention) The present invention was made in order to solve the above-mentioned problems, and provides a cable feeding device that can apply an appropriate pressing force to the cable to be fed and can be adjusted according to the outer diameter of the cable. The purpose is to provide.

(Summary of the invention) That is, in the cable feeding device of the invention, the connecting rod connecting the rotating body and the tightener is composed of a rod and a cylindrical body into which the rod can be freely inserted and removed. A large number of protrusions are provided in the length direction on one side of the rod, and claws for locking these protrusions are provided on the other side so as to be retractable. The above object is achieved by providing a pressure lever that pushes down the support arm.

(Embodiments of the invention) The invention will be described below with reference to illustrated embodiments.
FIGS. 1 and 2 are diagrams showing an embodiment of the present invention. In these figures, a rotating body 10 is driven by a caterpillar-shaped endless belt 13 stretched between a driving wheel 11 and a driven wheel 12 via a driving motor 14 and a speed reduction mechanism 15.

A tightener 16 is provided opposite the rotating body 10. The tightener 16 has a caterpillar-shaped endless belt 19 stretched between a pair of rotating wheels 17 and 18 arranged horizontally opposite each other.

The rotating body 10 and the tightener 16 are connected by a pair of connecting rods 20 on both sides of their substantially central portions, and the tightener 19 is configured to be able to swing left and right about a fulcrum 21 provided on the rotating body 10 side. There is.

Both connecting rods 20 are connected to a rod 22, and this rod 22
It is configured to be extendable and retractable from a cylindrical body 23 that can be inserted and removed freely. A number of tooth-shaped protrusions 24 are provided in the middle part of the rod 22 in the length direction, and on the other hand,
At the top of the cylinder body 23 there is a pawl 25 that locks the protrusion 24.
is provided. This pawl 25 is attached to the protrusion 24 so as to be able to protrude and retract, and the rod 22 can be freely inserted into the cylindrical body 23.
It is latched to the protrusion 24 so as to prevent it from coming off. However, if you want to pull out the rod 22 from the cylindrical body 23, insert the pawl 25 into the protrusion 24.
It is designed so that it can be removed from the

The tightener 16 is provided with support arms 26 on both sides thereof, and is supported by loosely fitting the support arms 26 into the rods 22, respectively. A pair of connecting rods 20
The upper part of each rod 22 is connected by a pressure lever 27. A cam 28 attached to the upper part of the rod 22 is connected to the short end of the pressure lever 27. When the pressure lever 27 is rotated in the direction of arrow 29 about the axis 28a of the cam 28, the rod 2
It functions to push down the washer 30 fitted to the washer 2. A coil spring 31 is fitted between the washer 30 and the support arm 26, and the pressure lever 2
By rotating 7 in the direction of arrow 29, the cam 28
The support arm 26, ie, the tightener 16, can be pressed through the washer 30 and the coil spring 31 by the action of the support arm 26, that is, the tightener 16.

Note that 32 in the figure indicates a guide roller.

When the cable 33 is fed out by the cable feeding device configured as described above, the tightener 16 is separated from the rotating body 10 by removing the eye 25 from the protrusion 24 and pulling out the rod 22 from the cylindrical body 23. In this state, the cable 33 is placed on the rotating body 10. Thereafter, the rod 22 is inserted into the cylindrical body 23, the tightener 16 is placed on the cable 33, and the pressure lever 27 is rotated 180 degrees in the direction of arrow 29 to press the tightener 16 against the cable 33. The preparation is now complete, and when the drive motor 14 is driven, the cable 33 is sent out at a predetermined speed.

In this case, the tightener 16 disposed on the upper part of the rotating body 10 swings following the direction in which the cable 33 is sent out.

That is, the endless belt 19 of the tightener 16 is
Since it is in contact with the outer periphery of the cable 33, it is rotated as the cable 33 advances, and a tensile force is applied in the feeding direction of the cable 33 due to the frictional resistance between the two, so that the entire tightener 16 moves toward the fulcrum 21. It will oscillate around the center.

As a result, an appropriate gripping force is applied to the cable 33 following the movement of the cable 33, allowing smooth feeding.

(Effects of the invention) As described above, the cable feeding device of the present invention provides an appropriate pressure to the cable to be fed by providing a spring on the connecting rod and a pressure lever that presses down the tightener via this spring. Since it can apply pressure, the cable can be sent out efficiently. In addition, according to the present invention, the connecting rod can be expanded and contracted so that it can be adjusted according to the outer diameter of the cable, so the range of application of the cable is wide.
Moreover, it is advantageous during transportation. Furthermore, when attaching the tightener to a rotating body, it is only necessary to push the rod down into the cylindrical body, making the operation easy.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of the cable feeding device according to the present invention, FIG. 2 is a side view of the same, and FIG.
Figures A and B are a front view and a side view, respectively, showing a conventional cable feeding device. 10... Rotating body, 11... Driving wheel, 12... Driven wheel, 13, 19... Endless belt, 16... Tightener, 20... Connecting rod, 22... Rod, 23...
...Cylinder, 24...Protrusion, 25...Claw, 26...
Support arm, 27...pressure lever, 31...coil spring.

Claims (1)

[Scope of utility model registration request] A rotating body with an endless belt stretched between a driving wheel and a driven wheel, a tightener placed opposite to the top of this rotating body and with an endless belt stretched between a pair of rotating wheels, and this tightener that can be swung. and a connecting rod connected to the rotating body, wherein the connecting rod is composed of a rod and a cylindrical body into which the rod can be inserted and removed freely, and the connecting rod is composed of a rod and a cylindrical body into which the rod can be freely inserted and removed, and the connecting rod is made of a rod and a cylindrical body into which the rod can be inserted and removed. A large number of protrusions are provided in the length direction, and claws for locking these protrusions are provided on the other end so as to be retractable, and the support arm of the tightener is loosely fitted into the rod, and the support arm is mounted on the rod via a spring. A cable feeding device characterized by having a pressurizing lever that is pressed down.