JP2558122B2 - Foldable cable jack - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a cable jack used for unfolding and laying an electric wire cable of a wooden drum.

[Conventional technology]

To unfold and lay an electric wire cable, a pipe rod is pierced through the core hole of the cable drum, the pipe rod is supported by a pair of cable jacks, and the cable drum is raised and lowered.
Means have been taken to unfold the wire cable while rotating the cable drum.

Since the above construction is often done on a road with a lot of traffic, it does not take up space, especially the road width, and it must be convenient for transportation, carrying, etc.
The base is wide for large diameters to ensure stability, and the same type is used for small diameters, which is a problem.

That is, as shown in FIG. 3, the conventional cable jack 50 includes a base 51 that is grounded, a screw rod (jack body) 53 that has a hook 52 that stands upright in the middle of the ground, and that can be raised and lowered.
It was composed of a base 51 and a suitable number of reinforcing members 54 interposed between the screw rods 53, and was an integral and bulky one.

[Problems to be solved by the invention]

The present invention has been devised in order to solve the above problems in view of the above problems, and the object of the present invention is that it can be folded compactly and can be carried, carried, packed, etc. easily. To provide a foldable cable jack.

[Means for solving problems]

A foldable cable jack of the present invention includes a base that is grounded, and a screw rod that is provided on one side of the base and that has a hook that can be raised and lowered from a tilted state to a folded state that folds on the base. , A strut which is interposed between the other side of the base and the spiral rod and is capable of raising and lowering from a tilted state in which the spiral rod is held in an inclined state to a folded state in which the base and the screw rod are folded and folded. There are special features.

[Action]

When the base is grounded and the rod is set in the upright state by setting the screw rod in an upright state, the rod is held in the upright state by the column. When the hook of the spiral rod is moved up and down in such a state, the pipe rod suspended on the hook and the cable drum through which the pipe rod is inserted are moved up and down.

When the support column is folded and the screw rod is folded, the base plate, the screw rod, and the support column are folded and so-called folded.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a vertical sectional front view showing a foldable cable jack according to an embodiment of the present invention. FIG. 2 is a plan view of FIG.

The foldable cable jack is composed of a base 1, a screw rod (jack body) 4 and a support 9 as main components.

The base 1 has an H-shaped bottom surface for better stability,
The clevis 2 on the front side (the left side in FIG. 1) protruding upward from both side walls of the U-shape has a U-shaped cross section in the central longitudinal direction.
The screw rod 4 is swingably arranged via a pin 3 from a slanted state to a folded state in which it is folded on the base 1, and the clevis 5 on the rear side in the middle thereof is a clevis on the rear side of the base 1. A pin 9 and a pin 10 which are swingably arranged from a pinhole 7 through an attachment / detachment pin 8 to hold the screw rod 4 in an inclined state to a folded state in which the screw rod 4 and the base plate 1 and the screw rod 4 are folded. (The clevis 6 can be removed by removing the attachment / detachment pin 8 from the base 1
(Put the post 9 in the U-shaped recess where it can be folded).

The screw rod 4 has a screw rod 12 built in a main body pipe 11, a hook 14 is integrally engaged with a nut 13 screwed to the main pipe 11, and a part of the main pipe 11 is cut out to provide a passage groove 15 of the hook 14.

The upper end of the screw rod 12 is connected to a rotating wheel 16 rotatably provided on the upper end of the main body pipe 11, and a ratchet handle 17 is fitted to a corner portion of the rotating wheel 16 and rotated to rotate the hook 14.
Up and down.

To tilt the screw rod 4, pull out the attachment / detachment pin 8
While feeding the screw rod 4 into the U-shaped recess of the base plate 1 in the longitudinal direction, the screw rod 4 is placed on the base plate 1 and then the detachable pin 8 is inserted into the pin hole 7 again. Then, the detachable pin 8 is attached to the screw rod 4
The shoulder of the clevis 5 comes into contact with the screw rod 4 when the whole is conveyed.
Never stands.

Such a foldable cable jack is used when unrolling and laying an electric wire cable.

That is, the pipe rod of the cable drum is suspended on the hooks 14 of the pair of cable jacks, and the ratchet handle 17 is rotated to raise the pipe rod position until the outer periphery of the cable drum leaves the ground surface. Then, the electric wire cable wound around the cable drum is unfolded and laid.

After laying the electric cable, pull out the attachment / detachment pin 8 of the pillar 9 and tilt the pillar 9 while pulling the pillar 9 toward the screw rod 4 side. Is parallel to the base 1.

〔The invention's effect〕

As described above, according to the present invention, the following excellent effects can be obtained.

(1) It is composed of a base, a screw rod, and a strut. In particular, the screw rod is provided on one side of the base so that it can be lifted up from an upright state to a folded state in which it is folded on the base, and the strut is also a base. It can be folded up compactly because it can be lifted from an oblique state in which it is interposed between the other side and the screw rod to hold the screw rod in an upright state to a folded state in which the screw rod and the base plate and the screw rod are folded. It is easy to carry, carry, and package.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing a foldable cable jack according to an embodiment of the present invention. FIG. 2 is a plan view of FIG.
FIG. 3 is a vertical sectional front view showing a conventional cable jack. 1,51 …… Base, 2, 5, 6 …… Clevis, 3, 10 …… Pin, 4,5
3 ... Screw rod, 7 ... Pin hole, 8 ... Removable pin, 9 ...
Prop, 11 …… Main body pipe, 12 …… Screw rod, 13 …… Nut,
14,52 …… Hook, 15 …… Passage groove, 16 …… Rotating wheel, 17…
… Ratchet handle, 50… Cable jack, 54…
... reinforcing material.

Claims (1)

(57) [Claims] 1. A front-rear direction having a long base which is grounded in the front-rear direction and a hook which is provided on the front side of the base and is capable of raising and lowering from an oblique state to a folded state in which the base is folded. It is possible to elevate from a long slanting rod and an oblique state in which it is interposed between the back side of the base and the screwing rod to hold the screwing rod in a slanted state to a folded state in which it is folded over with the base and the rod. A foldable cable jack characterized by being composed of long columns in the front-back direction.