JPH0977364A - Supporting device for cable winding frame drum - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively feed a cable by isolating the bottom end of a cable winding frame drum from the ground and rotatably supporting the drum around a center hole by a simple mechanism without the held of a crane or a fork lift. SOLUTION: Two arms 2 supports a bar 6 passed through a center hole of a cable reeling frame drum 5 with a receiving plate 21 on a horizontal base 1. The plates disposed opposite on the base have the first recess for holding the arms at a predetermined slat angle and the second recess for holding the arms vertically and support the bottom ends of the arms such that the arms can turn in a vertical plane. A lock lever 4 oscillatably mounted on the bottom of each arm has a projection sliding on the end of the plate with the turning of each arm and hold each arm at a predetermined slat angle or vertically, when the projection is fitted in the first recess or the second recess. When the arm is erected vertically from the predetermined slat angle, the projection is moved to the second recess from the first recess.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable reel drum supporting device for efficiently paying out a cable from a cable reel drum used when laying a power cable or the like.

[0002]

2. Description of the Related Art Electric power cables and the like are wound around cable reel drums of various sizes and carried into a construction site. Generally, a winding drum (cable drum) around which a cable is wound is a heavy load, and therefore a crane, a forklift, or the like is used for loading and unloading the drum.

Conventionally, since there is no dedicated equipment for properly handling the cable drum, general-purpose cargo handling equipment such as cranes and forklifts are often used subsequent to the cargo handling work even during the cable laying work. That is, the work is performed in such a manner that the cable drum is lifted in the air by a crane or a forklift and the cable is paid out from there.

Alternatively, in the case of a small-sized cable drum having a weight of about 100 kilograms or less, the cable drum is laid out in an H-shape on the ground or laid down sideways to carry out the work. Sometimes.

[0005]

However, in the method of hoisting the cable drum in the air by the crane or the forklift, the crane or the forklift, which is a general-purpose cargo handling facility, must be restrained together with the operator until the completion of the cable feeding operation. Not economical.

[0006] Further, when the cable is to be paid out with the cable drum standing on the ground, it is necessary to occasionally pull and slide the heavy cable drum while rolling the cable drum. When the cable is laid out sideways, it requires a large space around the cable drum and the cable is twisted. In any case, in such a state, the cable feeding work cannot be efficiently performed.

The present invention has been made to solve these problems, and allows the lower edge of the cable reel drum to be lifted from the ground by a simple mechanism without the aid of a crane or a forklift. An object of the present invention is to provide a cable reel drum supporting device capable of supporting a drum rotatably around a center hole and effectively paying out a cable.

[0008]

In order to solve the above-mentioned problems, a cable reel drum supporting device of the present invention comprises a horizontal base and a rod body which is passed through the center hole of the cable reel drum on the base. Two arms that support both ends of each of them with a saucer provided at each tip, and two arms that are provided so as to face each other on the base.
Each plate has a first recess for holding each of the arms at a predetermined tilt angle and a second recess for vertically holding each of the arms, and each of the arms has A plate that pivotally supports the lower end of each arm so as to be rotatable on the base, and a lock lever that is swingably attached to the lower portion of each arm, each of which is associated with the rotation of the arm. A protrusion that slides on the upper end surface of the plate is held, and when the protrusion is fitted into the first recess or the second recess, each arm is held at the predetermined tilt angle or vertically against gravity. And a lock lever for performing a vertical movement of the arm from the predetermined tilt angle by an external force, the protrusion moves from the first concave portion to the second concave portion.

In the above cable reel drum supporting device,
The two arms initially lie horizontally on the base, as shown in FIG. A saucer for receiving the rod is provided at the tip of the arm. When the arm is raised to a predetermined tilt angle (FIG. 1 (a)), the protrusion of the lock lever attached to the arm is automatically fitted into the first recess of the plate, and this tilt angle is maintained. In this state, the cable reel drum is erected on the base, a rod body such as a pipe is passed through the center hole, and both ends of the rod body are pressed against the saucer at the tip of the arm.

In this case, the predetermined tilt angle of the arm is
The angle is an angle at which the arm is inclined so that the height of the saucer at the tip of the arm substantially matches the height of the rod passing through the center hole of the cable winding drum.

Next, while the weight of the cable reel drum is being received by the tray of the arm, an external force in the horizontal direction is applied to the cable reel drum to raise the arm from the tilt angle to the vertical direction (FIG. 1 (b)). . In this case, the protrusion of the lock lever fits into the first recess of the plate to prevent the arm from falling down due to gravity. However, when the arm is moved in the opposite direction by an external force, the arm does not move. Accordingly, the protrusion of the lock lever naturally separates from the first concave portion and moves toward the second concave portion. At this time, since the cable winding drum is pushed up along the arc drawn by the tip of the arm with a gentle gradient, the arm can be vertically caused by a relatively small horizontal force.

When the protrusion of the lock lever is fitted in the second recess of the plate, the arm is held in the vertical posture. In this way, by stably supporting the cable reel drum at the tip of the vertically erected arm, the lower edge of the cable reel drum can be floated from the base surface to freely rotate the cable. Become.

To release the state in which the cable winding drum is supported by the arm, the protrusion of the lock lever fitted in the second recess of the plate may be manually released. Then, the protrusion of the lock lever fits into the first recess of the plate and the arm returns to the original tilt angle, so that the rod passed through the cable reel drum is removed from the pan.
Further, by detaching the protrusion of the lock lever from the first recess of the plate, the arm returns to the horizontal posture.

By using the cable reel supporting device of the present invention, it is possible to manually handle a cable drum having a total weight of up to about 500 kilograms. When the total weight is further increased, it becomes increasingly difficult to manually perform the work of vertically raising the arm from a predetermined tilt angle, and a forklift or the like is needed. However, even in that case, it is sufficient to use a forklift or the like for a very short time for vertically raising the arm.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION One of the preferred embodiments of the cable reel drum supporting device of the present invention is one having a plurality of first recesses corresponding to at least different arm tilt angles of different sizes. . Of course, large, medium, and small 3
It may correspond to one or more arm tilt angles. By properly selecting the tilting angle of the arm, the magnitude of the horizontal force required to vertically raise the arm from the tilting angle and the lifting distance from the base surface of the lower edge of the cable reel drum after the arm is erected are appropriately set. It can be adjusted.

That is, a large value (for example, 35 °, 40 ° or 45 °) as the tilt angle of the arm with respect to the vertical is used.
If you select (degree), you can take a large distance that the lower edge of the cable reel drum rises from the base surface when raising the arm, but a relatively large horizontal force is required to raise the arm. Therefore, with a relatively lightweight small drum, there is not much problem even if the required horizontal force becomes relatively large, but if the lifting distance can be made large, the workability at the time of extending the cable will be improved. It is desirable to select a large tilt angle.

On the contrary, if a small value (for example, 5 degrees or 10 degrees) is selected as the tilt angle of the arm, the required horizontal force for vertically raising the arm is relatively small, but
The lifting distance also becomes smaller. Therefore, for example, in the case of a large drum with a total weight of 500 kilograms, it is more important to keep the required horizontal force when raising the arm within an allowable range (for example, 100 kilograms or less) than to take a large lifting distance. Therefore, it is desirable to select a relatively small tilt angle.

When the tilting angle of the arm is selected from the above viewpoint, at the selected tilting angle,
As mentioned above, there is no guarantee that the height of the saucer at the tip of the arm will match the height of the rod that passes through the center hole of the cable reel drum, so it is necessary to adjust the length of the arm to match this. is there. Therefore, as another preferred embodiment of the present invention, there is a cable reel drum supporting device in which the length of the arm is adjustable.

In order to make the length of the arm adjustable, for example, one arm is composed of two slidable parts, and these two parts are always fixed, but it is necessary. In this case, it may be possible to slide it to adjust the total length of the arm.

Yet another preferred embodiment of the cable reel drum supporting device of the present invention is one in which the distance between the two arms can be adjusted. This is because the thickness of the cable reel drum varies from large to small, and the distance between the two arms in the cable reel drum support device must be adjusted accordingly.

In order to make the distance between the arms adjustable, for example, at least one of the two plates supporting the arms is made slidable on the base and is always fixed, but if necessary. Slide this to the above 2
It is conceivable to adjust the distance between the individual plates and thus the distance between the arms. In this case, the base can be formed in the shape of, for example, one flat plate.

As another method of adjusting the distance between the arms, the base itself is made up of two slidable parts carrying one plate and one arm, and these two parts are Although it is fixed at all times, if necessary, it may be possible to slide it to adjust the distance between the two plates and thereby adjust the distance between the arms. In this case, the base may for example be constructed in the form of two flat plates with overlapping parts for sliding, or the base may be constructed as two pipe structures, one of which is slidably inserted into the other. May be.

As still another preferred embodiment of the cable winding drum supporting device of the present invention, a device in which a handle which also functions as a weight is added to the lock lever can be mentioned. The handle that also serves as the weight is attached to the opposite side of the protrusion with the radius connecting the rocking shaft of the lock lever and the protrusion interposed.
The action of gravity helps the protrusions fit into the first and second recesses of the plate. It is also used as a handle when the protrusion is manually released from the fitted state with the second and first recesses.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The cable reel drum supporting device of the present invention will be described in detail below with reference to the accompanying drawings with reference to the preferred embodiments. FIG. 1 is a perspective view showing a cable reel drum supporting device as the present embodiment.

In FIG. 1, the cable reel drum is represented by the reference numeral 5, and the cable reel drum supporting device is represented by 10. 1A shows a state in which the cable reel drum supporting device 10 is preparing to support the cable reel drum 5, and FIG. 1B shows the cable reel drum 5 with the cable reel drum supporting device 10. The state is supported by.

The cable reel drum supporting device 10 comprises a horizontal base 1, two arms 2, two plates 3 and two lock levers 4. Arm 2
On the base 1, both ends of the rod body 6 passing through the center hole of the cable winding drum 5 are supported by the pans 21 provided at the tips of the arms 2. The plate 3 pivotally supports the lower end of each arm 2 so that each arm 2 can rotate within a vertical plane on the base 1.

FIG. 2 is an operation explanatory view for explaining the operation of the plate 3 and the lock lever 4 in the cable reel drum supporting device 10 according to this embodiment. The plate 3 has a surface shape including a first recess 31 for holding each arm 2 at a predetermined tilt angle and a second recess 32 for holding the arm 2 in a vertical posture. The lock lever 4 is swingably attached to each arm 2 and has a protrusion 41 that slides on the end face of the plate 3 as the arm 2 rotates.
When 1 is fitted in the first concave portion 31 or the second concave portion 32, each arm 2 is held in the predetermined tilt angle or vertical posture against gravity. The lock lever 4 may be provided with a handle 42 that also serves as a weight.

The operation of the cable reel drum supporting device 10 of this embodiment will be described with reference to FIG. Initially,
The two arms 2 lie horizontally on the base 1 (FIG. 2A). When the arm 2 is raised from the horizontal position, the protrusion 41 of the lock lever 4 swingably attached to the arm 2 slides according to the surface shape of the plate 3 (FIG. 2B).
When the arm 2 is further raised to a predetermined tilt angle, the arm 2 is automatically fitted into the first recess 31 and the tilt angle is maintained (FIG. 2C). In this state, the cable reel drum 5 is erected on the base 1, and a rod body such as a pipe is passed through the center hole thereof, and both ends of the rod body 6 are pressed against the saucer 21 at the tip of the arm 2 (see FIG. ) State).

With the weight of the cable reel drum 5 being received by the tray 21 of the arm 2, an external force in the horizontal direction is applied to the cable reel drum 5 to raise the arm 2 from the tilt angle. Then, as the arm 2 moves, the protrusion 41 of the lock lever 4 spontaneously leaves the first recess 31 and moves toward the second recess 32 (FIG. 2D). When the arm 2 is raised to the vertical posture, the protrusion 41 of the lock lever 4 fits into the second recess 32, and the arm 2 is held vertically (FIG. 2E). During this period, the cable winding drum 5 is pushed up along the arc drawn by the tip of the arm 2 with a gentle gradient, so that the cable winding drum 5 can be vertically caused by a relatively small horizontal force.

To release the state where the cable reel drum 5 is supported by the arm 2 as described above, the protrusion 41 of the lock lever 4 fitted in the second recess 32 of the plate 3 is gripped. It suffices to pinch 42 and release it manually. Then, the protrusion 41 of the lock lever 4 fits into the first recess 31 of the plate 3 and the arm 2 returns to the initial tilt angle, so that the cable winding drum 5 is removed from the tray 21. Further, hold the protrusion 41 of the lock lever 4 by the handle 42.
The arm 2 is returned to the horizontal posture by pinching and removing it from the first recess 31 of the plate 3.

FIG. 3 shows a plurality of first recesses 311 and 312.
It is a figure which illustrates the plate 3 which has. First recess 31
1 corresponds to a large tilt angle (for example, 35 degrees, 40 degrees or 45 degrees on the vertical basis), and the first concave portion 312 corresponds to a small tilt angle (for example, 5 degrees or 10 degrees). In the plate 3 illustrated in FIG. 3, two first recesses are accidentally shown, but of course, the number of the first recesses may be three or more, and tilt angles of large and small can be freely selected, as described below. This is preferable because the applicability of the cable reel drum supporting device 10 can be expanded.

That is, if a large value is selected as the tilt angle (vertical reference) of the arm 2, the distance by which the lower edge of the cable reel drum 5 floats above the surface of the base 1 when the arm 2 is raised can be set to a large value. A relatively large horizontal force is required to cause However, in the case of a relatively lightweight small drum, there is not much problem even if the required horizontal force becomes relatively large, but from the viewpoint that the workability at the time of cable extension is improved if a large lifting distance can be taken. It is desirable to selectively use the first recess 311 corresponding to a large tilt angle.

On the contrary, if a small value is selected as the tilt angle of the arm 2, the required horizontal force for vertically raising the arm 2 is relatively small, but the lifting distance is also small. Therefore, for example, in the case of a large drum with a total weight of 500 kilograms, it is more important to keep the required horizontal force when raising the arm within an allowable range (for example, 100 kilograms or less) than to take a large lifting distance. Therefore, the first concave portion 3 corresponding to a small tilt angle
It is desirable to selectively use 12.

FIG. 4 is a perspective view showing a structural example of the arm 2 whose length can be adjusted. Assuming that the tilt angle of the arm 2 is selected from the above-mentioned viewpoint, the height of the tray 21 at the tip of the arm 2 of the rod body 6 passing through the center hole of the cable reel drum 5 at the tilt angle. Since there is no guarantee that the heights will match, it is necessary to adjust the length of the arm 2 in order to make them match, for example, by the configuration shown in FIG. The arm 2 shown here is composed of two prismatic pipes that can be slid by inserting one into the inside of the other, and the pipe surface has a hole for inserting a pin to stop the slide at a desired length. It is provided.

FIG. 5 is a perspective view showing a structural example of the base 1 in which the distance between the arms 2 can be adjusted. Cable reel drum 5
The width of each of the two is large and small, and it is necessary to adjust the distance between the two arms 2 in the cable reel drum supporting device in accordance with these. Therefore, the space between the two arms 2 is adjusted using the base 1 as shown in FIG. The base 1 shown here is an example in which a rectangular column pipe is used to form a rectangular shape that lacks one of the short sides. The other short side is composed of two prismatic pipes that can be slid by inserting one into the inside of the other, and by sliding these, the length of the short side of the base 1 is changed. Since the arm 2 is attached to the base 1 via the plate 3, the distance between the arms 2 can be adjusted by changing the length of the short side of the base 1.

[0036]

According to the cable reel drum supporting device of the present invention, the lower edge of the cable reel drum can be floated from the ground and rotatably supported around the center hole by a simple mechanism. Therefore, the cable can be efficiently paid out. When vertically raising the arm that supports the cable reel drum at a predetermined tilt angle, the cable reel drum is pushed up with a gentle gradient along the arc drawn by the tip of the arm, so the arm is vertically raised with a relatively small force. be able to. Therefore, the cable drum, which is a heavy load, can be set in a posture with good workability only by human power without the aid of a crane, a forklift, or the like. Further, even if a forklift or the like is used, the occupation time is sufficiently short only while the arm is vertically raised.

Further, in the cable reel drum supporting device of the present invention, the length and interval of the arms can be made variable so that the tilt angle can be appropriately selected according to the size and weight of the target drum. It can be applied to a wide range of target drums, from light and small cable drums to heavy-duty large drums.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of a cable reel drum supporting device of the present invention.

FIG. 2 is an operation explanatory view for explaining operations of a plate and a lock lever in the cable reel drum supporting device of FIG.

FIG. 3 is a diagram illustrating a plate having a plurality of first recesses.

FIG. 4 is a diagram showing a configuration example of an arm whose length can be adjusted.

FIG. 5 is a diagram showing a configuration example of a base capable of adjusting an interval between arms.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Base 2 ... Arm 21 ... Sauce 3 ... Plate 31 ... 1st recessed part 311 ... 1st recessed part corresponding to large tilting angle 312 ... 1st recessed part 32 ... 2nd recessed part 4 ... Lock lever 41 ... corresponding to small tilting angle Protrusion 42 ... Handle 5 ... Cable reel drum 6 ... Rod 10 ... Cable reel drum support device

Claims (2)

[Claims] 1. A horizontal base, two arms for supporting both ends of a rod, which passes through a center hole of a cable winding drum on the base, with saucers provided at respective tips, and on the base. Two plates provided opposite to each other, having a first recess for holding each of the arms at a predetermined tilt angle and a second recess for vertically holding each of the arms on an upper end surface thereof. A plate pivotally supporting a lower end portion of each arm so that each arm is rotatable on the base, and a lock lever swingably attached to a lower portion of each arm, The arm has a protrusion that slides on the upper end surface of the plate as the arm rotates, and when the protrusion is fitted into the first recess or the second recess, each arm is resisted against gravity and the predetermined force is applied. Lock lever that holds the tilt angle of the The cable winding drum support device, wherein the protrusion moves from the first recess to the second recess when the arm is vertically raised from the predetermined tilt angle by a force. 2. The cable reel drum support device according to claim 1, wherein the plate has a plurality of first recesses corresponding to at least different arm tilt angles.