JPH09142732A - Drum rotating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drum rotating device which reduces elevating force in the case of elevating a drum and the loss of rotating energy in the case of idle running, and is excellent in productivity and easy in using. SOLUTION: A drum rotating device has an elevating section 8 which is elevatably attached to a pair of pillars 2 movably arranged on both the sides of the drum 1, and driven by an elevating motor 6 to elevate the drum 1; a rotary shaft 14 rotatably attached to the elevating section for transmitting rotating power to the drum 1; a power generating section 16 mounted on a frame 19 separated from the above one pair of pillars 2; and a clutch mechanism for interrupting between the power shaft 18 of the power generating section and the rotary shaft 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum rotating device suitable for rotating a large drum.

[0002]

2. Description of the Related Art When manufacturing long and flexible articles such as electric wires / cables, wire ropes and tubes, these articles and their semi-finished products are wound on a drum, or It is sent out from. In particular, the ultra-high-voltage power cables used for ultra-high-voltage power lines are thick, long, heavy, and the allowable bending radius is limited to a certain value or more. Large drums that exceed 3 meters are used. As a drum rotating device for rotating such a large drum, a device having a drum elevating mechanism is used for convenience of handling the drum.

FIG. 3 shows a conventional drum rotating device equipped with a drum lifting mechanism. A pair of columns 2 arranged on both sides of the drum 1 has wheels 4 at the lower ends thereof with a base 3 interposed therebetween. Is rotatably attached, and is configured to be movable along a rail 5 laid on the floor surface. Also,
Although illustration is omitted, a feed screw is arranged and fixed on the floor surface in parallel with the rail, and the base 3 of each pillar 2 has a screw to be screwed into the feed screw and the screw. A moving motor (not shown) for rotating is provided. Therefore, when the moving motor is rotated, the screw is also rotated and a propulsive force is applied by the feed screw, so that the base 3 and the pillar 2 are moved to the left or right depending on the rotation direction of the moving motor.

Each pillar 2 is provided with a drum lifting mechanism. These drum lifting mechanisms are a lifting motor 6 and a speed reducer 7 installed on the upper end of the pillar 2, lifting screws (not shown) connected to the output shaft of the speed reducer 7, and lifting and lowering along the pillar 2. And part 8. The elevating screws are respectively arranged in the columns 2 in the vertical direction and are rotatably supported. A nut (not shown) fixed to the rear surface of the elevating part 8 projects inside the column 2 and is screwed into the elevating screw. Therefore, when the lifting motor 6 is rotated, the lifting screw is rotated, and a propulsive force is given by the nut,
The elevating part 8 moves up and down according to the rotation direction of the elevating motor.

A rotating shaft (not shown) is rotatably fitted into a bearing 9 projecting from the front surface of the elevating part 8, and one end of the rotating shaft (not shown) is fitted with a kere 11 and a pintle (via a gear mechanism 10). (Not shown) is fixed. A power generation unit 12 is attached to the side surface of the lifting unit 8.
The power generation unit includes a motor 12a and a speed reduction mechanism 12b, and is connected to the other end side of the rotary shaft via a power transmission mechanism 13 including a chain, sprocket, belt, and pulley. It should be noted that the lifting motor 6 and the speed reducer 7, the lifting unit, and the bearing are also mounted on the column 2 on the left side of FIG. 3, and the pintle is fixed to one end of the rotary shaft inserted through the bearing. The mechanism 10, the power generation unit 12, and the power transmission mechanism 13 are not provided.

In the drum rotating apparatus having such a structure, when a drum is mounted, one or both of the pair of columns 2 are moved to leave a space therebetween, and the drum 1 is placed near the middle thereof by a crane or the like. Transport and place on the floor.
Next, the pillars 2 are brought close to each other, and the pintle formed at the tip of the rotary shaft is inserted into the center hole of the drum collar plate, and the kelet pin (not shown) of the kelet 11 is fitted to the pin hole of the drum collar plate. When the raising / lowering motor 6 is rotated in a predetermined direction in this state, the movement of the raising / lowering motor 6 is caused by the raising / lowering screw 8 through the raising / lowering screw.
The drum 1 supported by the Kerley 11 or the like between the elevating units 8 also rises. In this case, the power generation unit 12 and the power transmission mechanism 13 connected to the elevating unit 8 also rise together. Further, when removing the drum, when the drive motor 6 is rotated in the opposite direction to that described above, the movement is transmitted to the elevating section 8 via the elevating shaft and is lowered, so that between these elevating sections 8. The supported drum 1 also descends. Therefore, the drum can be removed by moving one or both of the pillars 2 and leaving a gap while the lower surface of the drum collar plate is in contact with the floor surface.

[0007]

As described above, in the conventional drum rotating device, the power generating portion 12 for rotating the drum 1 and the power transmitting mechanism 13 are integrally attached to the lifting portion 8 of the drum. When the drum elevating mechanism elevates and lowers the drum 1, the power generation unit 12 and the power transmission mechanism 1
As a result, 3 was raised and lowered together. in this way,
In the conventional drum rotating device, the weight of the power generation unit 12 and the power transmission mechanism 13 consumes the lifting force of the drum lifting mechanism. Therefore, when the lifting force of the drum lifting mechanism is the same, the weight of the drum that can be lifted up is small. The amount of cable winding is also reduced. Further, since there is no clutch mechanism, the power generation unit 1 can be used when the drum is idle and the cable is sent out.
The winding machine requires a large amount of energy because of the mechanical loss generated in No. 2. In addition, the heavy power generating portion 12 weighing several hundreds of kilograms protrudes from the column 2 and moves up and down, which may give a worker a sense of danger. It is an object of the present invention to provide a drum rotating device that does not have such drawbacks.

[0008]

The drum rotating device of the present invention is mounted on a pair of columns movably arranged on both sides of the drum so as to be movable up and down, and is driven by an elevator motor to raise and lower the drum. A rotary shaft that is rotatably attached to the lifting unit and that transmits a rotational force to the drum; a power generation unit that is mounted on a mount that is separate from the pair of columns; a power shaft of the power generation unit; A clutch mechanism for connecting and disconnecting between the rotating shafts is provided.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, it is desirable to employ a rolling contact clutch mechanism as a clutch mechanism for connecting and disconnecting between a power shaft of a power generating section and a rotary shaft for transmitting a rotary force to a drum. This clutch mechanism includes a clutch plate fixed to one end of one of a power shaft and a rotating shaft, and a plurality of rotating rollers rotatably mounted on one surface of the clutch plate,
The clutch plate may include an arm attached to one end of the other shaft and having an arm fitted between the plurality of rotating rollers.

[0010]

Embodiments of the present invention will be described below with reference to FIGS. In these figures, the same parts as those in FIG. 3 are designated by the same reference numerals. In FIG. 1, a pair of pillars 2 has wheels 4 rotatably attached to a base 3 fixed to the lower ends thereof, and is configured to be movable along rails 5 laid on the floor surface. There is. Although illustration is omitted, a feed screw is arranged and fixed on the floor surface in parallel with the rail 5, and the base 3 of each pillar 2 has a screw screwed into the feed screw.
A moving motor (not shown) for rotating the screw is provided. Therefore, when the moving motor is rotated, the screw is also rotated and a propulsive force is applied by the feed screw, so that the base 3 and the pillar 2 are moved to the left or right depending on the rotation direction of the moving motor.

The pillar 2 is provided with a drum lifting mechanism. This drum lifting mechanism includes a lifting motor 6 and a speed reducer 7 installed on the upper end of the pillar 2, a lifting screw (not shown) connected to the output shaft of the speed reducer 7, and a lifting unit that moves up and down along the pillar 2. 8 and. The elevating screws are respectively arranged in the columns 2 in the vertical direction and are rotatably supported. Lifting part 8
A nut (not shown) fixed to the back surface of the rod protrudes into the inside of the column 2 and is screwed into the lifting screw. Therefore, when the raising / lowering motor 6 is rotated, the raising / lowering screw is rotated and a propulsive force is given by the nut, so that the raising / lowering unit 8 is raised / lowered according to the rotation direction of the raising / lowering motor. Further, a rotary shaft 14 is rotatably fitted and inserted into a bearing 9 protrudingly provided on the front surface of the elevating part 8, and one end thereof is, as shown in FIG.
The pintle 14a is fixed. Although not shown in the drawings, the above-described configuration is the same for the column 2 on the left side of FIG.

As shown in FIG. 2, in addition to the pintle 14a, a kelet 11 having a kelet pin 11a is fixed to the rotary shaft 14 fitted in the bearing 9 of the elevating part 8 of the right column 2 in FIG. A clutch plate 15 is attached to the other end of the rotary shaft 14. A clutch plate 17 on the side of the power generation unit 16 is provided on the opposite side of the clutch plate 15.
Is arranged. The power generation unit 16 includes a motor for rotating the drum and a speed reducer (none of which is shown) for reducing the output thereof, a power shaft 18 for transmitting the output of the speed reducer to the clutch plate 17, and the like. Has been done. The pedestal 19 is provided separately from the column 2 and the drum lifting mechanism, and is positioned so that the axis of the power shaft 18 is located in the same vertical plane as the axis of the rotary shaft 14, and is fixed on the floor. ing. The height of the power shaft 18 on the floor is set to be slightly larger than the radius of the drum in consideration of the maximum diameter drum normally handled by the drum rotating device.

FIG. 2 illustrates the rolling contact clutch mechanism used in the present invention. In this figure, the left and right axes of the clutch mechanism are shown as 90
It is displayed tilted by about °. In FIG. 2, a plurality of (four in this example) rotating rollers 20 are provided on one surface of the clutch plate 17 fixed to one end of the power shaft 18, on the circumference of the same radius from the rotation center of the clutch plate 17, and At equal intervals (90 ° intervals in this example) in the circumferential direction,
Each is rotatably mounted. Clutch plate 15
On the surface facing the clutch plate 17 side, a plurality of (four in this example) arms 21 extending in a radial direction from the center of rotation are provided so as to project, and the inner ends of these arms are connected. They are connected by the surface 22. The protrusion thickness of the arm 21 and the connecting surface 22 is the same as the clutch plate 1
In order to be able to sufficiently receive the force from the rotating roller 20 on the 7 side, the thickness is made approximately the same as or slightly thicker than the thickness of the rotating roller 20.

In the apparatus of the present invention having such a structure, in the drum 1, as in FIG. 3, the pintle 14a is inserted into the center hole of the drum collar plate by the movement of the column 2 and the operation of the elevating / lowering drive section. The Kerley pin 11a is inserted and fixed in the pin hole of the drum collar plate, and the rotary shaft 14 is positioned at a predetermined height so that the rotary shaft 14 and the power shaft 18 are on the same axis. In this state, the moving motors attached to both the pillars 2 are moved in the same direction, and the rotating rollers 20 of the clutch plate 17 are fitted between the arms 21 of the clutch plate 15. Is moved to the gantry 19 side together with the drum 1. As a result, the clutch mechanism is brought into a connected state, and therefore, when the motor of the power generation unit 16 is rotated, its output is transmitted to the clutch mechanism via the speed reduction mechanism and the power shaft 18, and further from the rotary shaft 14 to the Kerley 1.
1 to the drum 1 via the kele pin 11a,
Rotate this.

As described above, in the drum rotating device of the present invention, the power generating portion is separated from the elevating portion and is independent, so that the elevating force of the elevating and lowering driving portion is spent for elevating the power generating portion. Instead, the weight of the drum that can be lifted up increases, the amount of cable winding increases, and production efficiency can be improved. In addition, if you want to idle the drum, such as when sending a cable from the drum, the clutch mechanism will be disengaged if the column is moved laterally with the drum slightly, and the power generation unit is wasted. The drum does not need to be driven, and the drum can be idled with little energy loss. Further, since the pedestal and the power generation unit mounted on the pedestal are of a fixed type, the danger of giving a worker a sense of danger is eliminated. In particular, when a rolling contact clutch is used as the clutch mechanism, even if there is an axial misalignment of about 30 mm between the rotary shaft on the drum side and the power shaft on the power generation unit side, the rotational force can be smoothed. Since it can be transmitted, it is convenient when rotating a large and heavy drum as in the present invention relatively slowly.

[0016]

As described above, according to the present invention, the elevating force of the elevating and lowering drive unit is not spent for elevating and lowering the power generating unit, and the weight of the drum that can be lifted up is increased. It is possible to increase the production efficiency, and if the drum is to be idle, the clutch mechanism can be disengaged, so there is no need to drive the power generation unit wastefully, and Energy loss can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a drum rotating device of the present invention.

FIG. 2 is a perspective view illustrating a rolling contact clutch in the device of the present invention.

FIG. 3 is a perspective view illustrating a conventional drum rotation device.

[Explanation of symbols]

 1 ...... Drum 2 ...... Pillar 3 ...... Base 4 ...... Wheel 5 ...... Rail 6 ...... Lifting motor 7 ...... Reduction gear 8 ...... Elevating part 9 ...... Bearing 10 ...... Gear mechanism 11 ...... Keray 11a ... Keray pin 12, 16 ... Power generation part 12a ... Motor 12b ... Reduction mechanism 13 ... Power transmission mechanism 14 ... Rotating shaft 14a ... Pintle 15, 17 ... Clutch plate 19 ... Frame 18 ... Power shaft 20 ... Rotating roller 21 ... Arm

Claims (2)

[Claims] 1. An elevating part which is attached to a pair of columns movably arranged on both sides of the drum so as to be able to move up and down, and which is driven by an elevating motor to move the drum up and down, and rotatably attached to the elevating part. A rotating shaft for transmitting a rotating force to the drum, a power generating unit mounted on a stand separate from the pair of columns, and a clutch mechanism for connecting and disconnecting the power shaft of the power generating unit and the rotating shaft. A drum rotating device characterized in that 2. A clutch mechanism for connecting and disconnecting between a power shaft of a power generating unit and a rotary shaft for transmitting a rotational force to a drum, and a clutch plate fixed to one end of one shaft and rotatably mounted on one surface of the clutch plate. A plurality of rotating rollers attached and attached to one end of the other shaft,
2. The drum rotating device according to claim 1, comprising a rolling contact type clutch mechanism having a clutch plate having an arm fitted between the plurality of rotating rollers.