KR20120118347A - Cable drum apparatus - Google Patents

Abstract

PURPOSE: A cable drum device is provided to adjust a position of a cable drum in a drum shaft by using a positioned, thereby regularly maintaining an interval between a center hole of the cable drum and the drum shaft with a position fixing member. CONSTITUTION: A cable drum device comprises a roller assembly(60), a cable drum(2), and a positioned(53). The roller assembly is assembled by a fork of a fork lifter. The height of the roller assembly is adjusted by moving up and down the fork. A cable(4) is reeled in the cable drum. The cable drum is supported in the roller assembly to be rotated while having a drum shaft(50) as a medium.

Description

Cable drum apparatus

The present invention relates to a cable drum device that can be stored while the cable is wound, and more particularly, to a cable drum device that is easier to set the position of the cable drum and can easily pull out the cable from the cable drum.

In general, in the cable construction process of installing cables during new construction sites, subway construction sites, and various plant constructions, cable drums with cables are stacked and the cable drums are mounted on the support jig by using a fork lifter or a crane when necessary. After that, the cable is pulled out from the cable drum for use.

1 and 2 are side and cross-sectional views showing a state in which a cable drum is mounted on a conventional support jig, and FIG. 2 is a cross-sectional view taken along the line 'A-A' of FIG. 1.

Referring to this, a drum shaft 3 inserted in the center of the cable drum 2 is mounted on the U-shaped support 8 formed at the upper end of the support jig 1, and the cable wound inside the cable drum 2. When 4 to 5 operators pull (4), the cable drum 2 is rotated about the drum shaft 3 and the cable 4 is drawn out.

In more detail, the cable drum 2 is formed in a circular shape, the shaft portion 2a on which the cable 4 is wound around the periphery, and radially extending from both ends of the shaft portion 2a to the shaft portion 2a. It is comprised by the side plate 2b which prevents the wound cable 4 from deviating in the axial direction.

A center hole 9 is formed through the center of the shaft portion 2a, and when the cable drum 2 and the drum shaft 3 are coupled to each other, the drum shaft 3 is inserted through the center hole 9 to form a drum. Both ends of the shaft 3 protrude out of the shaft portion 2a.

The support jig 1 includes a vertical member 5 formed integrally with a U-shaped support part 8 for supporting both protruding ends of the drum shaft 3 at an upper end of the support jig 1, and integrally with a lower end of the vertical member 5. It consists of a horizontal member (6) connected to support the vertical member (5) in contact with the ground, and a reinforcing member (7) connecting the vertical member (5) and the horizontal member (6) to reinforce the supporting strength. .

In this structure, both ends of the drum shaft 3 inserted through the center hole 9 of the cable drum 2 are lifted by a fork lifter, a crane, or the like to be mounted on the U-shaped support 8 of the support jig 1. Afterwards, workers waiting on the support jig 1 pull out the cable 4 wound on the cable drum 2.

On the other hand, when the cable 4 is pulled out, the cable drum 2 must be rotated in the drum shaft 3 supported by the support jig 1, at which time the center hole 9 and the drum of the cable drum 2 are rotated. In order to reduce the frictional force generated between the shafts (3), a gel-type lubricant (eg grease) is applied to the center hole (9) of the cable drum (2), the drum shaft (3), and the support jig (1). Is applied to the U-shaped support (8).

However, the use of grease contaminates the drum shaft (3), which causes grease on the sling belts and worker's gloves used to hang the drum shaft (2) when the cable drum (2) is replaced. There is a problem that worsens the environment.

In addition, expensive crane equipment must be used to mount or replace the cable drum 2 on the support jig 1, which increases the construction cost and requires a worker to wait for the installation and replacement of the cable drum 2. Therefore, the labor cost will increase.

In addition, since there is a gap between the center hole 9 of the cable drum 2 and the drum shaft 3, the cable drum 2 in a state where the cable drum 2 sags downward from the drum shaft 3 due to its own weight. When the support jig 1 is rotated, the inner circumferential surface of the center hole 9 comes into contact with the outer circumferential surface of the drum shaft 3, causing a rattling phenomenon (rolling up and down) while repeating the falling motion. While the drum 2 moves up and down / left and right, there is a problem in that stability and durability are greatly reduced.

On the other hand, Figure 3 is a cross-sectional view showing a support device for a cable drum using a wheel of the wheel as another example of the prior art, with reference to this an example of using the wheel of the wheeled vehicle 10 is described as follows.

As shown in the illustration, the seating plate 11 is installed on one side of the wheel in a state in which the wheels of the junk car are laid down, and the center bar 12 is fixed at the center of the seating plate 11.

When the cable drum (2) is installed using the support device, the cable drum (2) standing on the construction site is pushed with a fork lifter or the like so that the side plate (2b) lies on the ground.

Then, the fork lifter fork lifter under the side plate (2b) to lift the cable drum (2), and then the cable drum (2) so that the center bar (12) of the junk car wheel (10) is inserted into the center hole (9) And put it on the mounting plate (11).

As such, the cable drum 2 is placed on the seating plate 11, and the worker pulls out the cable 4 wound on the cable drum 2.

However, the wheels (wheels + tires) 10 of an automobile are not originally designed to be laid on its side, and it is not known how much the tires and wheels of the wheels 10 can withstand the load of the cable drum 2. In a state in which the cable drum 2 is placed on the upper side of the wheel 10, the wheel may not be damaged while the wheel cannot withstand the high load of the cable drum 2.

In addition, when the cable drum 2 is laid down using a fork lifter, there is a risk that the side plate 2b of the cable drum 2 hits the ground and is broken by the impact, and the cable 4 in the cable drum 2 The cable may be damaged by being pulled to one side.

In addition, in order to put the cable drum (2) on the wheels of the abandoned vehicle 10, lift the cable drum (2) with the fork of the fork lifter, and then move the center bar (12) of the wheel (10) of the cable drum (2) It should be inserted into the center hole (9), it is difficult to insert the center bar into the center hole of the cable drum in a state in which the center bar is obscured by the cable drum.

Therefore, the present invention has been invented to solve the above problems, and can solve all of the above-mentioned conventional problems, and more easily set the position of the cable drum, cable drum which can easily pull out the cable from the cable drum The purpose is to provide a device.

In order to achieve the above object, the cable drum device according to the present invention is assembled to the fork of the fork lifter and the roller assembly is adjusted in height by the lifting and lowering of the fork; A cable drum on which the cable is wound and rotatably supported on the roller assembly via the drum shaft; And a positioner for adjusting the position of the cable drum on the drum shaft, wherein the roller assembly reduces friction with the drum shaft without using a conventional grease to smoothly maintain the rotation of the cable drum. .

Here, the roller assembly is a roller mounting bracket fixed to the fork of the fork lifter; And a pair of rollers rotatably installed on the roller mounting brackets to rotatably support the drum shaft assembled to the cable drum.

The roller has a cylindrical roller body that is a portion directly supporting the drum shaft; A pair of bearing shafts axially inserted into the roller body and assembled to mounting grooves formed in the roller mounting brackets, respectively; And a bearing mounted between the roller body and the bearing shaft.

In addition, the roller assembly is a combination of a fixing bracket which is arranged to face the upper and lower surfaces of the fork at the same length as the width of the fork on the upper surface of the fork of the fork lifter, and a connecting bracket connecting one end of the fixing bracket It is characterized in that the fastening bracket assembly, the fixing bolt and the fixing nut are fastened by detachable installation.

The positioner is inserted into the drum shaft slidably assembled, two positioning members for preventing the axial movement of the cable drum; And a fixing clamp installed to be in contact with one end of the position fixing member to fix the position fixing member to the drum shaft.

The position fixing member of the positioner is formed in a conical shape that can be pressed into both ends of the center hole of the cable drum, the distance between the center hole of the cable drum and the drum shaft by the position fixing member pressed into the center hole is kept constant It is characterized in that the play between the drum and the drum shaft is prevented.

Accordingly, the cable drum device of the present invention has the following effects.

1. By adjusting the position of the cable drum in the drum shaft by using the positioner, the gap between the center hole of the cable drum and the drum shaft can be kept constant by the position fixing member, and the play is eliminated by press-fitting the center hole of the position fixing member. As the cable drum rotates, the rolling phenomenon due to its own weight, that is, the rattling up and down, can be prevented. In addition, the cable drum can be prevented from moving in the axial direction.

2. The roller of the roller assembly is inserted into the center hole of the cable drum to rotatably support both ends of the protruding drum shaft, so that the cable drum can be easily rotated without the use of grease, and various problems caused by the use of grease are known. This can be solved.

3. It can reduce the friction force between the center hole and the drum shaft when the cable drum is rotated without using grease. It can prevent the contamination of the drum shaft due to the use of grease. It can be improved. In addition, it is possible to reduce the work force for rotating the cable drum.

4. By controlling the operation of the fork lifter, the setting and change of the cable drum (height / position, etc.) can be performed relatively easily compared to the supporting device using the conventional support jig and the wheel of the junk car. It becomes possible. In addition, it is possible to increase the safety of work by reducing the risk of falling of the drum drum, and it is possible to minimize the waiting time of the operator even when replacing the cable drum can improve the work efficiency.

5. Conventionally, in addition to the fork lifter to replace the cable drum using a crane together, the installation space of the crane equipment required a lot of work space, due to the cost of the crane, but in the present invention, the crane Because only the fork lifter is used instead of using it, it is possible to reduce the work space and the construction cost.

6. In the past, the height adjustment was not possible when setting the cable drum, but in the present invention, the height of the cable drum can be easily adjusted because the fork of the fork lifter can be freely lifted, thereby adjusting the cable from the cable drum according to the working conditions. It can be easily withdrawn.

7. Previously, installation spaces such as support jigs and wheels of used cars were required, but in the present invention, since the roller assembly is detachably installed on the fork, a separate installation space is not required, and a work space can be secured widely, and a fork lifter is mounted. There is an advantage that can be utilized for other purposes, such as the loading of the cable drum.

1 and 2 are a side view and a cross-sectional view showing a state in which the cable drum is mounted on the support jig according to the prior art.
Figure 3 is a cross-sectional view showing a cable drum support device using a conventional wheeled vehicle.
4 is an exploded perspective view of the cable drum and the drum shaft in the present invention.
5 is an assembled perspective view of the cable drum and the drum shaft in the present invention.
Figure 6 is an exploded perspective view showing a roller assembly in the present invention.
7 is an assembled perspective view of the roller assembly in the present invention.
Figure 8a is an exploded perspective view showing a state in which the roller assembly is installed on the fork of the fork lifter in the present invention.
8B is an assembly perspective view of the roller assembly installed in the fork of the fork lifter in the present invention.
Figure 9a is a perspective view showing another embodiment of the fixing bracket in Figure 8a
Figure 9b is a perspective view showing another embodiment of the fixing bracket in Figure 8b
10 is a perspective view showing a state in which the cable drum is mounted on the fork lifter in the present invention.
Figure 11 is a cutaway perspective view of the cable drum mounted on the fork lifter in the present invention.
12 is a side view showing the overall appearance of the fork lifter equipped with a cable drum in the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

The present invention uses the roller assembly and the improved drum shaft of a simple configuration without using the existing support jig or wheels, etc., the problem of using the conventional grease, the problem of using the crane equipment, cable at cable extraction Cable drum which can solve the problems of drum rattling, and other problems caused by using wheels of waste cars, and can provide various advantages such as shortening of the time required for setting the cable drum, workability and improvement of working efficiency. Relates to a device.

Since the cable drum device of the present invention is simply installed in a fork of a fork lifter (forklift), it is possible to precisely set the position and height of the cable drum by moving the fork lifter and adjusting the height of the fork.

When the fork lifter is used, the fork lifter is relatively inexpensive compared to the conventional crane, so that the cost can be reduced, and the position of the fork lifter can be freely moved, making it easier to set and change the position. The cable can be pulled out at the height.

In addition, since the use of the cable can be easily moved to the location required by the conventional occupied space of the crane, the drum support and the position of the support device using the wheel of the abandoned vehicle and the problem due to the occupied space and the like can all be solved.

Figure 4 is an exploded perspective view of the cable drum and the drum shaft in the present invention, Figure 5 is an assembled perspective view of the cable drum and the drum shaft in the present invention.

The cable drum device according to an embodiment of the present invention is a cable drum 4 on which the cable 4 is wound, and a fork of the fork lifter (reference numeral 75 in FIG. 12), 74 in FIGS. 8A to 12. A roller assembly (60) rotatably supporting the cable drum (2) via the drum shaft (50) and the drum shaft (50) to fix the axial position of the cable drum (2). The positioner 53 is a main configuration.

The drum shaft 50 may be installed in the shape of a rod or tube. The drum shaft 50 is inserted into the center hole 9 formed through the center of the cable drum 2. Both ends of the shaft 50 remain in a state of protruding outward from both side plates of the cable drum 2 (denoted by reference numeral 2b in FIGS. 1 and 2) (see FIG. 5).

In this way, both ends of the drum shaft 50 are rotatably supported by the roller assembly 60 which will be described later in the state where the cable drum 2 protrudes to both sides, so that the cable drum 2 is used.

In addition, in the present invention, the positioner 53 has a position fixing member 51 assembled on both sides of the cable drum 2 on the drum shaft 50, and a clamp for fixing the position of the position fixing member 51 ( 52).

The position fixing member 51 is a conical member having a tapered outer circumference, and is pressed into and coupled to both ends of the center hole 9 of the cable drum 2 while the drum shaft 50 is assembled with the cable drum 2. have.

The position fixing member 51 supports the cable drum 2 in the axial direction while maintaining the center hole 9 and the drum shaft 50 of the cable drum 2 at regular intervals, and at the same time. It serves to remove the play between the shaft 50, and to act to prevent the vertical flow in close contact with the cable drum (2).

That is, since the position fixing member 51 is assembled in a press-fitted state into the center hole 9, the cable drum coupled via the position fixing member 51 when the cable drum 2 is rotated when the cable 4 is pulled out. (2) and the drum shaft 50 can be rotated integrally, and also there is no play between the center hole 9 of the cable drum 2 and the drum shaft 50, thereby eliminating the cable drum (2) as in the prior art This up and down shake or rattling problem can be solved.

In other words, as the drum shaft 50 is rotated on the roller assembly 60 when the cable 4 is pulled out, the entire cable drum 2 is integrally rotated so that the up and down flow of the cable drum 2 is lost. Even if a slip occurs between the center hole 9 and the position fixing member 51 during the rotation of (2), the vertical flow of the cable drum 2 can be at least prevented.

When the drum shaft 50 is inserted into the center hole 9 of the cable drum 2 and the positioning member 51 is fastened to the drum shaft 50 by the clamp 52 for fixing, as shown in FIG. 5. The position fixing member 51 may be assembled so as to be press-fitted at both ends of the center hole 9, and thus the entire cable drum 2 is supported in the axial direction by the position fixing member 51 of both positioners 53. It becomes the structure that becomes.

The position fixing member 51 has a lattice pattern or rhombus-shaped unevenness 51a on the tapered outer surface, so that the position fixing member 51 rotates between the center hole 9 of the cable drum 2 and the position fixing member 51. This can reduce slip.

At this time, the unevenness 51a formed in the position fixing member 51 may be formed by knurling processing.

In order to fix the position fixing member 51 at the both ends of the center hole 9 of the cable drum 2 in the press-fitted state, the fixing clamp 52 is attached to the drum shaft 50.

The fixing clamp 52 is formed in a semi-circular shape and has a pair of ring portions 52a surrounding the outer circumferential surface of the drum shaft 50, a hinge portion 52b coupled to one end of the ring portion 52a by a hinge structure, and each ring portion. The other end of the 52a is formed in the radially extending portion is coupled to the coupling portion 52c fastened by the bolt 54 and the nut 55.

The coupling part 52c rotates to open and close in a vertical direction about the hinge part 52b, and closes the coupling part 52c so that the ring part 52a surrounds the drum shaft 50, and then the bolt 54 and By fastening with the nut 55, the position fixing member 51 press-fitted into the center hole 9 of the cable drum 2 can be fixed with the clamp 52.

Looking at the installation method of the position fixing member 52, the drum shaft 50 is inserted into the center hole (9) of the cable drum (2), and then the two position fixing members (51) to the cable drum (2) After each of the center hole (9) is pressed in and hung respectively, the fixing clamp 52 is tightly fixed to the end of the positioning member 51, it is possible to prevent the loosening of the positioning member (51).

At this time, the position fixing member 51 is inserted into the center hole 9 of the cable drum 2 and is locked by the fixing clamp 52 until it no longer enters the inside of the center hole 9. Tighten the 51.

Accordingly, the position fixing members 51 on both sides of which the outer circumferential surface is tapered are positioned at intervals of approximately the width of the cable drum 2 in the axial direction at the center of the drum shaft 50.

As a result, the gap between the inner circumferential surface of the center hole 9 of the cable drum 2 and the outer circumferential surface of the drum shaft 50 with the position fixing member 51 pressed into the center hole 9 at both sides of the cable drum 2. It will be kept constant, to prevent the movement between the vertical hole and the axial direction when the cable drum 2 is rotated by eliminating the clearance between the center hole (9) and the drum shaft (50).

Next, Figure 6 is an exploded perspective view showing a roller assembly in the present invention, Figure 7 is an assembly perspective view of the roller assembly in the present invention, the configuration of the roller assembly will be described as follows.

In the present invention, the roller assembly 60 is a roller mounting bracket 69 fixed to the upper surface of the fork 74 of the fork lifter 75, and a pair of rollers 61 rotatably mounted to the roller mounting bracket 69. It includes.

The roller mounting bracket 69 is a base plate (69a) that is seated on the upper surface of the fork 74 of the fork lifter 75, and the side fixing plate 67 is coupled to stand up in both side ends of the base plate (69a) It is configured to include).

The base plate 69a has a coupling portion 69b that is bent upwardly at the front end portion and the rear end portion, and each coupling portion 69b has a structure in which a fastening hole 69c is formed.

The side fixing plate 67 has a U-shaped plate structure in which two mounting grooves 68 in which the roller 61 is mounted with the protruding jaw in the middle thereof are formed.

The pair of rollers 61 mounted on the mounting grooves 68 are cylindrical roller bodies 61a, which are portions directly supporting the drum shaft 50 in the roller mounting bracket 69, and the roller bodies 61a. The bearing shaft 63 is inserted through the axial direction in the interior, and the bearing 62 is mounted between the roller body 61a and the bearing shaft 63.

Looking at each configuration in detail, first the shaft body is formed through the roller body (61a), the bearing shaft 63 is inserted into this shaft hole is coupled.

In addition, both ends of the bearing shaft 63 are threaded, and the bearing shaft 63 is inserted into the mounting groove 68 of the roller mounting bracket 69 by a nut 54 fastened thereto. It is supposed to be.

Bearing mounting grooves 61b are formed in a circular shape at both ends of the roller body 61a, and bearing shafts 63 are provided toward the inner circumference of the bearing 62 while the bearings 62 are mounted in the respective bearing mounting grooves 61b. Is coupled through.

At this time, the outer ring of the bearing 62 is press-fitted or welded into the bearing mounting groove 61b to be integrally rotated with the roller body 61a, and is coupled to each other, and the bearing shaft 63 is attached to the inner ring of the bearing 62. It is press fit or welded to join.

The roller body 61a is rotatably supported by the bearing 62 at the bearing shaft 63.

Looking at the method of assembling the roller 61 to the roller mounting bracket 69, the roller shaft 61a, the bearing 62, the bearing shaft 63 is assembled, the bearing shaft 63 to the roller mounting bracket After inserting into the mounting groove 68 formed in the side fixing plate 67 of the 69, insert the spring washer 65, the flat washer 66 with the side fixing plate 67 in between, and then tighten the nut 64. Done.

In this way, the bearing shaft 63 is fixed to the side fixing plate 67 by a nut 64 pressurized at both sides with the side fixing plate 67 interposed therebetween, so that the roller 61 is coupled to the roller mounting bracket 69. It becomes possible.

On the other hand, the roller assembly 60 as described above is detachably installed on the fork 74 of the fork lifter 75 with the fixing bracket 70, the bolts (71, 73), the nuts (72, 76).

The fixing bracket 70 is a member formed long in the form of an "b", the first fixing hole (70a) is formed on one side of the fixing bracket 70, the second side on the other side of the fixing bracket 70 The fixing hole 70b is formed.

8A and 8B are an exploded perspective view and an assembled perspective view illustrating a state in which a roller assembly is installed on a fork of a fork lifter in the present invention, and FIGS. 9A and 9B are perspective views showing another embodiment of the fixing bracket in FIG. 8A and FIG. 10 is a perspective view of the assembly, Figure 10 is a perspective view showing a state in which the cable drum is mounted on the fork lifter in the present invention.

In addition, Figure 11 is a cutaway perspective view of the cable drum mounted on the fork lifter in the present invention, Figure 12 is a side view showing the overall appearance of the fork lifter equipped with a cable drum in the present invention.

8A, 8B, and 10, the fixing bracket 70 is coupled to the front and rear (left and right in the figure) of the roller assembly 60 above the fork 74 of the fork lifter 75, In the lower part of the fork 74 is provided with two that are coupled to the fixing bracket of the upper side, a total of four are installed.

Referring to the method of fixing the roller assembly 60 to the fork lifter 75, the roller assembly 60 is placed on the upper surface of the fork 74, the coupling portion of the roller mounting bracket 69 on the upper surface of the fork 74 Back and forth (left and right in the figure) to the fixing bracket 70 back and forth (69b), and then to align the fastening hole (69c) of the coupling portion (69b) and the first fixing hole (70a) of the fixing bracket 70, The coupling part 69b and the fixing bracket 70 are fastened to each other by the first fixing bolt 71 and the first fixing nut 72.

Next, in order to fix the upper fixing bracket 70 to the fork 74, the other two fixing brackets 70 are attached to the lower surface of the fork 74, and then a second formed on the fixing bracket 70 of the upper surface. The second fixing bolt 73 is inserted through the second fixing hole 70b formed in the fixing hole 70b and the fixing bracket 70 on the lower surface, and then the second fixing nut 76 is inserted into the second fixing bolt 73. ), The entire roller assembly 60 is completely fixed to the fork 74.

Hereinafter, another embodiment of the fixing bracket 70 for fixing the roller assembly 60 to the fork 74 of the fork lifter 75 will be described based on differences from the above-described embodiment.

Both ends of the fixing bracket 70 according to the first embodiment is formed to protrude in the width direction of the fork 74 from the upper and lower surfaces of the fork 74.

However, when one end of the fixing bracket 70 protrudes toward both side plates of the cable drum 2 while the cable drum 2 is supported on the roller assembly 60 via the drum shaft 50, the cable drum ( When rotating 2), one or both side plates of the side plate of the cable drum 2 may cause a problem that the cable drum 2 cannot rotate due to interference of one end of the fixing bracket 70.

In addition, when the both ends of the drum shaft 50 inserted into the center hole 9 of the cable drum 2 are to be lifted by the fork 74 of the fork lifter 75 to be seated on the roller assembly 60. When one side plate of (2) is caught by one end of the fixing bracket 70 and the cable drum 2 is inclined to one side, there is a possibility that a safety accident in which the cable drum 2 falls from the fork lifter 70 may occur. have.

This problem can be solved by removing one end of the fixing bracket 70 protruding toward both side plates of the cable drum (2).

To this end, as shown in FIGS. 9a and 9b, three "b" shaped angles per fork are assembled in a "c" shape, that is, the length of the fixing bracket 70 which is opposed to the upper and lower surfaces of the fork 74. By cutting the same length as the width of the fork 74, and welding the connecting bracket 77 in an up and down direction to one end of the fixing bracket 70 against the upper and lower surfaces of the fork 74, thereby fixing the fixing bracket. By preventing the 70 from protruding toward both side plates of the cable drum 2, the interference of the fixing bracket 70 can be prevented.

In this case, in order to fix the fixing bracket 70 to the fork 74, two second fixing holes 70b are drilled only on the fixing bracket 70 which is opposed to the lower surface of the fork 74, and the fixing bracket 70 Two second fixing nuts 73 are fixed by welding to coincide with the second fixing holes 70b formed at both sides of the other side of the second side, and the second fixing nuts 73 and the second fixing holes 70b are fixed to each other. Through fastening the fixing bolt 71, the end of the second fixing bolt 73 to press the lower surface of the fork 74, the roller assembly 60 by the fixed bracket assembly 78 assembled by "c" To the fork 74.

Hereinafter, the process of supporting the cable drum 2 to the fork 74 of the fork lifter 75 will be described.

First, in order to support the cable drum 2 to which the drum shaft 50 is coupled to the fork 74 of the fork lifter 75, the roller assembly 60 is fixed to the fork 74 of the fork lifter 75. In, the operator adjusts the fork lifter 75 to lower the fork 74 and then up, so that the drum shaft 50 is mounted on the roller 61 of the roller assembly 60.

Then, when the fork 74 is lifted up, the drum shaft is lifted by the roller 61 and the entire cable drum 2 is lifted up. At this time, the position of the fork lifter 75 is moved to a position suitable for cable construction. When the height of the fork 74 is finally adjusted, the setting of the cable drum 2 is completed.

Thereafter, the cable 4 is drawn out from the cable drum 2 to be constructed. If the height or position of the cable drum 2 needs to be further adjusted, the height of the fork 74 may be adjusted or the fork lift 75 may be adjusted. Move to position

When the cable 4 is pulled out, the cable drum 2 is rotated by the roller assembly 60 while being mounted on the fork 74 of the fork lifter 75, and thus the cable drum 2 can be easily pulled out.

The roller 61 is freely rotated in the roller mounting bracket 69 by the bearing 62 while supporting the drum shaft of the cable drum 2, so that the cable drum 2 can be smoothly rotated.

In this manner, the present invention has the following advantages.

First, by adjusting the position of the cable drum in the drum shaft by using the positioner, it is possible to keep the distance between the center hole of the cable drum and the drum shaft by the position fixing member, and the play is eliminated by press-fitting the center hole of the position fixing member. As the cable drum rotates, the rolling phenomenon due to its own weight, that is, the rattling up and down, can be prevented. In addition, the cable drum can be prevented from moving in the axial direction.

In addition, since the roller of the roller assembly is rotatably supported at both ends of the drum shaft protruding into the center hole of the cable drum, it is possible to easily rotate the cable drum without using grease, and various problems associated with the use of grease. This can be solved. In particular, it is possible to reduce the friction force between the center hole and the drum shaft when the cable drum is rotated without using grease, thereby preventing contamination of the drum shaft due to the use of grease, and reducing the working environment when replacing the cable drum. It can be improved. In addition, it is possible to reduce the work force for rotating the cable drum.

In addition, the control of the fork lifter enables relatively simple setting and changing of the cable drum (change of height / position, etc.), compared to the conventional support jig and the support device using the wheel of the abandoned vehicle, and greatly shortens the setting time. It becomes possible. In addition, it is possible to increase the safety of work by reducing the risk of falling of the drum drum, and it is possible to minimize the waiting time of the operator even when replacing the cable drum can improve the work efficiency.

In addition, in the past, in addition to the fork lifter to replace the cable drum using a crane together, the installation space of the crane equipment required a lot of work space, due to the cost of the crane, but in the present invention, the crane Because only the fork lifter is used instead of using it, it is possible to reduce the work space and the construction cost.

In addition, the height adjustment was impossible in the conventional setting of the cable drum, but in the present invention, it is possible to freely lift the fork of the fork lifter, so that the height of the cable drum can be easily adjusted. It can be easily withdrawn.

In addition, in the past, installation spaces such as support jigs and wheels of used cars were required, but in the present invention, since the roller assembly is detachably installed on the fork, a separate installation space is not required and the work space can be secured widely, and the fork lifter is mounted. There is an advantage that can be utilized for other purposes, such as the loading of the cable drum.

In the above-described embodiment of the present invention, as the positioner 53 for fixing the cable drum 2 to the drum shaft 50, the positioning member 51 is formed in a conical shape, but the technical field of the present invention. Those skilled in the art can employ a position fixing member in the form of a polygonal pyramid such as a hexagonal pyramid, and fix one of the position fixing members 51 to the drum shaft 50 at a suitable position by welding, and then fix the other. It can be fixed to the drum shaft 50 by fixing means such as a clamp 52 for.

The embodiments of the present invention have been described in detail above, but the scope of the present invention is not limited to the above-described embodiments, and various modifications of those skilled in the art using the basic concept of the present invention defined in the following claims and Improved forms are also included in the scope of the present invention.

2: cable drum 4: cable
9: Center Hall 50: Drum Shaft
51: position fixing member 51a: irregularities
52: fixing clamp 52a: ring portion
52b: hinge portion 52c: coupling portion
53: positioner 54: bolt
55: nut 60: roller assembly
61: roller 62: bearing
63: bearing shaft 64: nut
65: spring washer 66: flat washer
67: side fixing plate 68: mounting groove
69: roller mounting bracket 69a: base plate
69b: engaging portion 69c: fastening hole
70: fixing bracket 70a: the first fixing hole
70b: 2nd fixing hole 71: 1st fixing bolt
72: 1st fixing nut 73: 2nd fixing bolt
74: fork 75: fork lifter
76: second fixing nut 77: connecting bracket
78: fixing bracket assembly

Claims (9)

A roller assembly 60 which is assembled to the fork 74 of the fork lifter 75 and whose height is adjusted by raising and lowering the fork 74;
A cable drum 2 on which the cable 4 is wound and rotatably supported on the roller assembly 60 via the drum shaft 50;
A positioner (53) for fixing the axial position of the cable drum (2) on the drum shaft (50);
Cable drum device comprising a.
The method according to claim 1,
The roller assembly 60,
A roller mounting bracket 69 fixed to the fork 74 of the fork lifter 75;
A pair of rollers 61 rotatably installed on the roller mounting bracket 69 to rotatably support the drum shaft 50 assembled to the cable drum 2;
Cable drum device, characterized in that configured to include.
The method according to claim 2,
The roller 61,
A cylindrical roller body 61a which is a portion directly supporting the drum shaft 50;
A pair of bearing shafts 63 respectively inserted through the axial direction into the roller body 61a and assembled to the mounting groove 68 formed in the roller mounting bracket 69;
A bearing 62 mounted between the roller body 61a and the bearing shaft 63;
Cable drum device, characterized in that configured to include.
The method according to claim 2 or 3,
The roller mounting bracket 69 is,
A base plate 69a seated on an upper surface of the fork 74 of the fork lifter 75;
Side fixing plates 67 which are coupled to stand upwards at both side ends of the base plate 69a;
And the side fixing plate 67 has a U-shaped plate structure in which two mounting grooves 68 in which a pair of rollers 61 are mounted with the protruding jaw in the center thereof are formed therein. Drum device.
The method according to claim 1,
The roller assembly 60 is fastened by a fixing bracket 70 and fixing bolts 71 and 73 and fixing nuts 72 and 76 on the upper surface of the fork 74 of the fork lifter 75 so as to be detachably installed. Cable drum device, characterized in that.
The method according to claim 1,
The roller assembly 60 is fixed to the upper surface of the fork 74 of the fork lifter 75, the fixing bracket 70 is disposed to face the upper and lower surfaces of the fork 74, the same length as the fork 74, respectively. And, it is fastened by a fixing bracket assembly 78 and a fixing bolt (71, 73) and fixing nuts (72, 76) combined with a connecting bracket 77 for connecting one side end of the fixing bracket (70) Cable drum device, characterized in that detachably installed.
The method according to claim 1,
The positioner 53 is
A position fixing member (51) assembled on both sides of the cable drum (2) on the drum shaft (50) to prevent axial movement of the cable drum (2); And
A clamp (52) installed on the drum shaft (50) to fold into the respective position fixing members (51) to fix the position of the position fixing members (51);
Cable drum device, characterized in that configured to include.
The method of claim 7,
The position fixing member 51 is formed in a conical shape that can be pressed into both ends of the center hole 9 of the cable drum 2, the cable drum (by the position fixing member 51 pressed into the center hole 9) Cable drum device, characterized in that the clearance between the cable drum (2) and the drum shaft (50) is prevented while the interval between the center hole (9) and the drum shaft (50) of the 2) is kept constant.
The method of claim 7,
The fixing clamp 52 has a ring portion 52a formed in a semicircular shape to surround the drum shaft 50, a hinge portion 52b coupled to one end of the ring portion 52a by a hinge structure, and the ring portion 52a. It is formed on the other end of the coupling portion rotatable around the hinge portion (52b) 52, characterized in that consisting of the bolt (54) and nut (55) fastened through the coupling portion (52c) Cable drum device.

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