JPH0447178Y2 - - Google Patents

Description

[Detailed explanation of the invention] A. Purpose of the invention [Industrial application field] The invention aims to support the cable drum around which the cable is wound so that it floats off the ground and can rotate freely when the cable is being stretched and laid. A stand for
In particular, it relates to a pedestal used to support a cable drum of a control cable.

[Conventional technology]

The cable drum for control cables targeted by this invention has a smaller diameter and lighter weight (200 kg) than cable drums for power cables and communication cables. At present, a so-called cable jack, which is a screw jack, a hydraulic jack, or a combination thereof, is used.

A frame-shaped mount suitable for cable drums with relatively small diameter cables that raises and lowers the cable drum by applying the lever principle (Utility Model Publication No. 45-291, Publication of Utility Model Publication No. 46-20987, etc.)
Although it is known, the fact of its implementation is not known.

[Problem that the invention attempts to solve]

The above cable jack is quite heavy (2
Because it is configured to be able to support a cable drum with a weight of up to 3 tons), it is large and heavy, and requires a pair on the left and right, making it difficult to transport and handle the cable jack itself, and the cable drum of the control cable (about 200 kg) It is tedious to use it as a stand and requires space for storage.

All of the frames devised using the lever principle lack compactness when not in use, which poses problems when storing and transporting them.

The purpose of this invention is to solve the above-mentioned problems with conventional cable drum mounts, and the purpose is to provide a mount that is small and foldable, making it easy to store and carry, and is particularly suitable for cable drums for control cables. shall be.

B. Structure of the invention [Means for solving the problems] In order to achieve the above purpose, this invention
As shown in Fig. 2, a rectangular frame 4 (frame 4) that can be folded into two is made by connecting the ends of a pair of U-shaped frames 1 and 2 of the same shape and size, one of which is a support leg and the other of which is the same size, with a shaft pin 3. 5 shown), and on one side of the rectangular frame 4, a cable drum bearing 5 and a cable drum supported by the bearing 5 are located approximately in the center of two corresponding sides of the U-shaped frame 1 for supporting legs. Attach the swivel wheel 6 that is in contact with the end surface, and fold the bearing 5 and the surface opposite to the mounting side of the swivel wheel 6 to a position where it is biased toward the shaft pin 3 side of the corresponding two sides of the U-shaped lever frame 2. The end of the second U-shaped frame 7 for supporting legs that exactly overlaps the U-shaped frame 2 for levers is connected with a shaft pin 8, and the first and second U-shaped frames 2 are
Grounding sides 1A and 7A of U-shaped frames 1 and 7 for supporting legs
It is characterized by having a tension member 9 for determining the width of the legs that connects the legs.

[Effect]

The distance between the grounding sides 1A and 7A of the U-shaped frames 1 and 7 for the first and second supporting legs is widened to the full width determined by the tension member 9 for determining the leg width, and the fourth
As shown in the figure, the end 2A of the U-shaped frame 2 for leverage
By raising the U-shaped frame 1 for the first supporting leg
, and lower the position of the bearing 5.

Roll the cable drum D there, and
Step over the grounding side 1A of the U-shaped frame 1 for supporting legs and position it between two corresponding sides of the frame.

Next, the end 2A of the U-shaped lever frame 2 is pushed down to bring the bearing 5 into contact with the drum shaft S from below. Bearing 5
If the cable drum D and the drum axis S do not align well, roll the cable drum D back and forth to align them.

Once the bearing 5 is properly aligned with the drum shaft S,
The end 2A of the U-shaped frame 2 for the lever is pushed down until it overlaps the U-shaped frame 7 for the second supporting leg, and as shown by the solid line in FIG.
Since the position of the connecting pin 3 of the U-shaped lever frame 2 rises, the first supporting leg U-shaped frame 1 supporting the cable drum D via the bearing 5 rises, and the cable drum D leaves the ground.

If the cable drum D is supported tilted in the axial direction, the cable drum D may shift lower as it rotates;
, the rotation of the cable drum D is not inhibited.

When the lever U-shaped frame 2 is pulled up from the state shown in FIG. 2 by holding its end 2A, the first supporting leg U-shaped frame 1 falls down and the cable drum D lowers.
When it reaches the ground, the cable drum D is rolled and brought out of the U-shaped frame 1.

When storing, the U-shaped frame 1 for the first supporting leg and the U-shaped frame 2 for the lever are folded in half using the shaft pin 3 as a fulcrum so that the U-shaped frame 7 for the second supporting leg is sandwiched between them. Three frames 1, 2, and 7 are overlapped and folded as shown by the chain lines in FIG.

〔Example〕

The U-shaped frames 1 and 7 for the first and second supporting legs and the U-shaped frame 2 for the lever are made of rust-proof coated steel pipes, and the tension member 9 for determining the width of the legs is made of iron chains.

The bearing 5 has a pair of rollers 5A and 5A attached to its bearing surface to ensure smooth rotation of the drum shaft S.

As shown in FIG.
The mounting seat 10 has several bolt holes 12 at intervals equal to the distance between the pair of mounting bolts 11 fixed to the bottom surface of the bearing 5.

Insert the mounting bolts 11 of the bearing 5 into the desired bolt through holes 12, and then tighten the nuts 13 from the back.
The bearing 5 can be attached by tightening with 13. If the diameter of the cable drum is large and it cannot be removed from the ground, the bearing 5 is moved to a higher position.

The swivel wheels 6 are commercially available so-called casters. A pair of left and right handles 14 are provided on the handle side 2A of the U-shaped lever frame 2.

The connecting point 8 of the U-shaped frame 7 for the second supporting leg with respect to the U-shaped frame 2 for the lever is the connecting point 3 of the U-shaped frame 1 for the first supporting leg and the U-shaped frame 2 for the lever, and the connecting point 3 of the U-shaped frame 7 for the second supporting leg in the use state. A bracket 15 is interposed so as to be located below the line XX connecting the ground point of the letter-shaped frame 7.

Since the positions of the connecting points 8 are in the above-mentioned relationship in the state of use, a downward component of force acts on the U-shaped lever frame 2 due to the load of the cable drum D. Therefore, the lever U-shaped frame 2 does not jump up by itself.

It is advantageous in terms of leverage to set the length of the second U-shaped frame 7 to be at least twice the distance between the shaft pins 3 and 8.

In addition, the length of the U-shaped frame 1 for the first supporting leg + the distance between the shaft pins 3 and 8 is set to be approximately equal to the width of the open legs of the U-shaped frames 1 and 7 for the first and second supporting legs.・U-shaped frame 1 and 7 for second support leg
This prevents the triangular frame composed of the leg width determining tension member 9 from deforming and falling over.

The tension member 9 for determining the width of the legs to be opened may be any suitable material other than an iron chain, such as a wire or a thin iron rod.

C. Effects of the invention As described above, the cable drum mount of the invention has a pair of U-shaped frames 1 and 2 of the same shape and size, one of which is a support leg and the other of which is a lever, and the ends of each frame are connected by a shaft pin 3. A rectangular frame 4 that can be folded in two is constructed, and on one side of the rectangular frame 4, a bearing 5 of the cable drum and a bearing 5 supported by the bearing 5 are located approximately in the center of two corresponding sides of the U-shaped frame 1 for supporting legs. A flexible wheel 6 in contact with the end face of the cable drum
Attach the lever U-shaped frame 2 on the side opposite to the mounting side of the bearing 5 and swivel wheel 6.
Connect the end of the second U-shaped frame 7 for the support leg, which is exactly overlapped with the U-shaped frame 2 for the lever when folded, with the axis pin 8 at a position offset to the axis pin 3 side of the corresponding two sides, and Since it is equipped with a tension member 9 for determining the width of the legs that connects the ground contact sides 1A and 7A of the U-shaped frames 1 and 7 for two supporting legs, it can be folded compactly when not in use, and is lightweight. It is easy to store and carry. One worker can not only carry the stand, but also raise and lower the cable drum. In addition, even if the cable drum is displaced in the axial direction due to the mount being installed at a slight incline, the end face of the drum will not touch the frame, so the rotation of the cable drum, that is, the cable extension, will be carried out smoothly. be.

[Brief explanation of the drawing]

Figure 1 is a front view of the inventive cable drum mount in use, Figure 2 is a left side view, Figure 3 is an enlarged side view of the bearing, and Figures 4 and 5 show how the bearing is attached to the axis of the cable drum. FIG. 3 is a side view illustrating the order of application. 1 is a U-shaped frame for the first supporting leg, 2 is a U-shaped frame for a lever, 3 and 8 are shaft pins, 4 is a rectangular frame,
5 is a bearing, 6 is a flexible wheel, 7 is a U-shaped frame for the second support leg, 9 is a tension member for determining the leg width, 14
is the handle.

Claims (1)

[Scope of utility model registration request] A rectangular frame that can be folded into two is constructed by connecting the ends of a pair of U-shaped frames of the same shape and size, one of which is a support leg and the other of which is the same size, with a shaft pin. A bearing of the cable drum and a swivel wheel in contact with the end face of the cable drum supported by the bearing are installed approximately in the center of two corresponding sides of the U-shaped frame, and on the surface opposite to the side where the bearing and swivel wheel are attached, Connect the ends of the second U-shaped frame for supporting legs, which will overlap the U-shaped frame for levers when folded, with axis pins to the positions of the corresponding two sides of the U-shaped frame for levers, which are offset to the axis pin side. A cable drum mount including a tension member for determining the width of the legs that connects the grounding sides of the U-shaped frame for the second supporting leg.