JP2015003776A - Overhead line type carrying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the lifting power without increasing the power of motors for driving drums.SOLUTION: A haulback line 5 of a haulback drum 2 is wound around a fixed pulley 7, and its tip side is connected to a carrier 8 movably supported on an upper overhead line 5a. One end side and the other end side, as a main line 11 and a slack pulling line 12, of a wire material, a longitudinal intermediate part of which is wound around a pair of grooved drums 10a and 10b of a direction conversion drum 10 provided in the carrier 8, are wound around a main drum 3 and a slack pulling drum 4. The carrier 8 comprises a hoisting drum 15 around which a hoist line 16 is wound. An endless chain 19 is wound around driving sprockets 14a and 14b provided in the grooved drums 10a and 10b, respectively, and around a driven sprocket 18 with a larger number of teeth provided in the hoisting drum 15. A rotational drive force given from the slack pulling line 12 to grooved drums 10a and 10b is amplified and transmitted to the hoisting drum 18.

Description

  The present invention relates to an overhead wire transport device used for transporting an object to be transported along an overhead wire stretched between two points.

  Skyline and running skyline overhead wire conveyors are generally used as conveyors used to collect timber harvested in forests and the like.

  In addition, another overhead wire transport device is equipped with a hole back drum, a main drum, and a slack pulling drum that can be driven by individual hydraulic motors, and the carrier is operated by the hole back line, main line, and slack pulling line. Conventionally, a three-wire overhead wire transport device has been proposed (see, for example, Patent Document 1).

  In such a three-wire overhead wire transport device, the hall back line fed out from the hall back drum is located at a second point separated by a desired distance from a certain first point where each drum is installed. It is stretched to form an upper overhead line portion to the fixed pulley to be installed. The tip end side of the hole back line wound around the fixed pulley is connected to a transporter supported movably on the upper overhead wire portion.

  The carrying device is provided with a direction changing drum, and the longitudinal direction intermediate portion of one piece of rope is wound around the direction changing drum a plurality of times, and one end side of the rope is used as a main line. The main drum is wound up, and the other end side of the rope is wound up as a slack pulling line on the slack pulling drum.

  Further, the carrying device is provided with a hanging drum around which a hoist line for suspending the object to be carried is suspended. A driven sprocket is coaxially attached to the suspension drum, and the sprocket and a driving sprocket attached coaxially to the direction changing drum are connected via a power transmission means such as a chain. Thus, the suspension drum can be rotated in the same phase in synchronization with the rotation of the direction changing drum.

JP 2012-101912 A

  However, in the skyline overhead wire transport device, the unloading force directly depends on the force generated by the unloading motor and engine mounted on the carrier. Therefore, in order to increase the unloading force, it is necessary to increase the force generated by the unloading motor or engine. Thus, when increasing the force generated by the unloading motor or engine, since the unloading motor or engine is heavy and large, the transporter on which the unloading motor or engine is mounted becomes heavy, large and expensive. End up.

  Further, in the running skyline type overhead wire transport device, the unloading force directly depends on the force generated by the motor connected to the main drum that winds the main line (hall line). Therefore, in order to increase the unloading force, it is necessary to increase the force generated by the main drum motor. Thus, when the force generated by the main drum motor is increased, the main drum motor is heavy and large, so that the whole overhead wire transport device is heavy and large.

  In addition, in the conventional three-wire type overhead wire transport device shown in Patent Document 1, when the hoist line is lowered (paid out) from the suspension drum provided in the transporter while the transporter is stopped, the main drum is used. The operation is performed by synchronizing the winding of the main line and the feeding of the slack pulling line by the slack pulling drum. On the other hand, when the hoist line is lifted (wound up) by the lifting drum of the transporter, the operation is performed by synchronizing the feeding of the main line by the main drum and the winding of the slack pulling line by the slack pulling drum.

  Therefore, the unloading force in the three-wire overhead wire transport device largely depends on the force generated by the hydraulic motor of the slack pulling drum.

  However, the idea of increasing the unloading force is not particularly shown in Patent Document 1.

  Therefore, the present invention further develops the idea of the 3-wire overhead wire transport device disclosed in Patent Document 1, and can increase the unloading force without increasing the force generated by the motor. An object of the present invention is to provide an overhead wire transport device that can save labor and can reduce the size and weight of the transporter.

  In order to solve the above-mentioned problem, the present invention, corresponding to claim 1, comprises a hall back drum, a main drum and a slack pulling drum which are individually driven by a motor, and the hall back line fed out from the hall back drum. Is connected so as to form an upper overhead wire portion with a fixed pulley separated by a desired distance, and the tip of the hole back line wound around the fixed pulley is connected to a carrier that is movably supported by the upper overhead wire portion. The one end side of the cord material wound around the longitudinal intermediate portion around the direction changing drum provided in the transporter is wound around the main drum as a main line, and the other end side of the cord material is wound An overhead wire transport device comprising a slack pulling drum wound around the slack pulling drum, and further a lifting drum wound with a hoist line on the carrier The direction change drum of the transporter is provided with a driving sprocket coaxially, and the suspension drum is provided with a driven sprocket having a larger number of teeth than the driving sprocket, respectively. An overhead wire transport device having a configuration in which an endless power transmission means is hung on a sprocket.

  According to claim 2, in the above configuration, the direction changing drum of the carrier is a pair of two drums that winds the intermediate portion in the longitudinal direction of the cord material a plurality of times, and a driving sprocket is coaxially connected to each drum. In addition, an endless power transmission means is hung around the drive sprockets and the driven sprockets of the suspension drum.

According to the overhead wire conveying device of the present invention, the following excellent effects are exhibited.
(1) In the suspension drum, the lifting force of the suspension drum can be increased without increasing the force generated by the hydraulic motor for driving the main drum and the slack pulling drum. Thereby, each hydraulic motor for driving the main drum and the slack pulling drum can save labor. Further, the transporter can be reduced in size and weight.
(2) The direction change drum of the carrier is a pair of two drums that are wound around the middle portion in the longitudinal direction of the cord material a plurality of times, and each of the drums is provided with a drive sprocket coaxially, and each of the drive sprockets, By adopting a structure in which an endless power transmission means is hung around the driven sprocket of the suspension drum, the cord material constituting the main line and the slack pulling line is caused to rub against the two drums of the direction change drum. Thus, the suspension drum can be efficiently driven to rotate by using the rotational driving force applied by the above-mentioned.

It is a schematic side view which shows one Embodiment of the overhead wire type conveying apparatus of this invention. It is a side view which expands and shows the carrier in the overhead wire type conveying apparatus of FIG. It is an AA direction arrow line view of FIG. It is a schematic side view which shows the other form of implementation of this invention.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  1 to 3 show an embodiment of an overhead wire carrying device of the present invention.

  That is, the overhead wire transport device of the present invention is indicated by reference numeral 1 in FIG. 1, and at a certain first point, a hall back drum 2 driven by an individual hydraulic motor (not shown), a main drum 3, A slack pulling drum 4 is provided.

  The hole back line 5 fed out from the hole back drum 2 passes through a pulley 6 attached to a main pillar (not shown) standing at the first point, and a second point (not shown) separated by a desired distance. The upper overhead wire portion 5a is stretched to the fixed pulley 7 installed on the pillar. The front end side of the hall back line 5 is disposed so as to be folded by being wound around the fixed pulley 7, and the front end of the hole back line 5 is supported by a carrier 8 movably supported by the upper overhead wire portion 5 a. Connected.

  Two rollers 9 for running along the upper side of the upper overhead wire portion 5a are provided at an upper end portion of the transporter 8 with a certain gap therebetween.

  Further, the transporter 8 is provided with a direction changing drum 10 including a pair of grooved drums 10a and 10b. The first and second grooved drums 10a and 10b of the direction changing drum 10 are wound around the longitudinal intermediate portion of one rope several times, and one end side of the rope is the main The line 11 is wound around the main drum 3, and the other end is wound around the slack pulling drum 4 as a slack pulling line 12.

  Each of the first and second grooved drums 10a and 10b includes rotating shafts 13a and 13b that rotate integrally. At one end of each of the rotating shafts 13a and 13b, an individual drive sprocket 14a and 14b is attached.

  Further, the carrying device 8 is provided with a suspension drum 15 around which a hoist line 16 for suspending an object to be conveyed (not shown) is suspended. The suspension drum 15 is provided with a rotating shaft 17 that rotates integrally with each other, and each driving shaft is provided at one end of the rotating shaft 17 corresponding to the position of the driving sprockets 14a and 14b of the grooved drums 10a and 10b. A driven sprocket 18 having a larger number of teeth than that of the sprockets 14a, 14b is attached.

  The number of teeth of the driven sprocket 18 is the rotational driving force of the suspension drum 15 obtained as the reciprocal of the reduction ratio of the number of rotations of the suspension drum 15 with respect to the number of rotations of the grooved drums 10a and 10b of the direction change drum 10. In view of the amplification factor, it is desirable that the number of teeth of each of the drive sprockets 14a and 14b is about 1.5 times.

  A chain 19 as an endless power transmission means is wound around each of the driving sprockets 14 a and 14 b and the driven sprocket 18.

  Reference numerals 20 and 21 in FIG. 1 are pulleys that are attached to a main pillar (not shown) and individually guide the main line 11 and the slack pulling line 12.

  Although not shown, the hole back drum 2, the main drum 3, and the slack pulling drum 4 are each connected to a pair of drums having the same diameter via a hydraulic motor (not shown), a power transmission mechanism including a sprocket and a chain. It is desirable to have a configuration in which the lines 5, 11 and 12 corresponding to the pair of drums are respectively wound and wound so that they can be rotationally driven together. In this way, the winding amount in the corresponding hallback drum 2, main drum 3, and slack pulling drum 4 corresponding to each of the lines 5, 11, and 12 is increased, so that the cording over a long distance becomes easy. .

  Further, a clutch is provided between the hole back drum 2 and the main drum 3 to synchronize the rotation operations on the winding side and the feeding side as necessary. It is desirable that a configuration is provided between the slack pulling drum 4 and a clutch for synchronizing the rotation operations on the winding side and the feeding side with each other as necessary. With this configuration, when the hole back line 5 is wound by the hole back drum 2 in a state where the clutches are connected, the amount of winding and the main line 11 by the main drum 3 are fed out. The amount and the amount of feeding of the slack pulling line 12 by the slack pulling drum 4 can be made to correspond to each other. On the other hand, when the main drum 11 is wound up by the main drum 3 and the slack pulling line 12 is wound up by the slack pulling drum 4, the winding amount and the hole back by the hole back drum 2 are taken. The feeding amount of the line 5 can be made to correspond. Further, in the state where the clutches are connected, when the transporter 8 is moved by winding the line 5 or 11 or 12 on the winding side, the line 11, 12 or 5 on the feeding side may be tensioned. Therefore, the transport of the transporter 8 can be carried out with the combined power of the hydraulic motors (not shown) of the drums 2, 3, 4, and the careless transport of the transporter 8 can be prevented. It is made to be able to.

  When the transporter 8 of the present invention having the above configuration is used to move the transporter 8, a clutch (not shown) between the hole back drum 2 and the main drum 3, and the hole back drum 2, A clutch (not shown) is connected to the slack pulling drum 4 together. In this state, as shown by arrows a, c, e in FIG. 1, the hall back line 5 is wound up by the hole back drum 2 (arrow a), and the main line 11 is formed by the main drum 3 and the slack pulling drum 4. When the unwinding of the slack pulling line 12 (arrow c and arrow e) is performed in synchronization, the carrier 8 moves to the second point side as indicated by the arrow g in FIG.

  On the other hand, in the state where the clutches (not shown) are connected, as shown by two-dot chain arrows b, d, and f in FIG. 1, the feeding of the hole back line 5 by the hole back drum 2 (arrow b), and the above When the main line 11 and the slack pulling line 4 are wound up by the main drum 3 and the slack pulling drum 4 (arrow d and arrow f) in synchronism with each other, the carrier 8 is shown by the two-dot chain line arrow h in FIG. As shown, it moves to the first point side.

  Further, when the movement of the transporter 8 is stopped, the clutches (not shown) are disengaged and the hole back drum 2 is stopped, as shown in FIG. When the winding of the main line 11 (see arrow d) by (see FIG. 1) and the unwinding of the slack pulling line 12 (see arrow e) by the slack pulling drum 4 (see FIG. 1) are performed synchronously, the above-mentioned direction change is performed. The grooved drums 10a and 10b of the drum 10 are rotationally driven in the counterclockwise direction in FIG. 2 by friction with the cords constituting the main line 11 and the slack pulling line 12 wound around. . Therefore, the suspension drum 15 is caused to rotate by the rotational driving force transmitted from the driving sprockets 14a and 14b provided coaxially to the grooved drums 10a and 10b to the driven sprocket 18 via the chain 19. 2, the hoist line 16 is fed out from the suspension drum 15 as shown by the arrow i in FIG. 2, and the hoist line 16 is suspended.

  On the other hand, with the clutches (not shown) disengaged and the hole back drum 2 stopped, the main line 11 is fed (arrow c) by the main drum 3 (see FIG. 1) and the slack pulling drum 4 is moved. When the winding (arrow f) of the slack pulling line 12 is performed synchronously (see FIG. 1), the grooved drums 10a and 10b of the direction changing drum 10 connect the main line 11 and the slack pulling line 12 to each other. It is rotated in the clockwise direction in FIG. Therefore, the suspension drum 15 is caused to rotate by the rotational driving force transmitted from the driving sprockets 14a and 14b provided coaxially to the grooved drums 10a and 10b to the driven sprocket 18 via the chain 19. 2 so that the hoist line 16 is wound up by the suspension drum 15 and the hoist line 16 is lifted up as shown by an arrow j in FIG. become.

  As described above, when the hoist line 16 is suspended and lifted from the suspension drum 15 in the transporter 8, the drive sprockets 14a and 14b and the driven sprocket 18 are rotationally driven at the reciprocal of the reduction ratio. Since the force is amplified, the rotational drive is about 1.5 times the rotational drive force applied from the main line 11 and the slack pulling line 12 to the grooved drums 10a and 10b of the direction change drum 10. The suspension drum 15 can be rotationally driven by force.

  As described above, according to the overhead wire conveying device 1 of the present invention, the lifting force of the suspension drum 15 can be increased without increasing the force generated by each hydraulic motor equipped in the main drum 3 and the slack pulling drum 4. The cords constituting the main line 11 and the slack pulling line 12 can be increased up to about 1.5 times the rotational driving force applied to the grooved drums 10a and 10b of the direction changing drum 10.

  Therefore, each hydraulic motor equipped in the main drum 3 and the slack pulling drum 4 can save labor, and thus the transporter 8 can be reduced in size and weight.

  Further, in the transporter 8, the rotational driving force is transmitted to the driven sprocket 18 of the suspension drum 15 to both of the driving sprockets 14a and 14b attached to the two grooved drums 10a and 10b of the direction changing drum 10. For this reason, both the rotational driving force applied by friction to the two grooved drums 10a and 10b from the ropes constituting the main line 11 and the slack pulling line 12 are used. Thus, the suspension drum 15 can be efficiently driven to rotate.

  The overhead wire transport device 1 of the present invention has been described as a configuration in which the driving sprockets 14a and 14b are provided on both of the two grooved drums 10a and 10b of the direction changing drum 10, as shown in FIG. As described above, the driving sprocket 14a or 14b may be provided only on one of the grooved drums 10a or 10b. FIG. 4 shows a case where the driving sprocket 14a is provided coaxially on the grooved drum 10a.

  In this case, an endless chain 19 for power transmission is hung on a driving sprocket 14a attached to one grooved drum 10a of the direction changing drum 10 and a driven sprocket 18 provided coaxially on the suspension drum 15. A rotated configuration may be used.

  Other configurations in FIG. 4 are the same as those shown in FIGS. 1 to 3, and the same components are denoted by the same reference numerals.

  As with the embodiment shown in FIGS. 1 to 3, force generated by the hydraulic motors mounted on the main drum 3 and the slack pulling drum 4 also by the overhead wire conveyor 1 of the embodiment shown in FIG. 4. The unloading force of the hanging drum 15 can be increased without increasing. Further, each hydraulic motor provided in the main drum 3 and the slack pulling drum 4 can save labor, and the transporter 8 can be reduced in size and weight.

  In addition, this invention is not limited only to the said embodiment, The arrangement | positioning of the two grooved drums 10a and 10b of the direction change drum 10 in the carrier 8 comprises the main line 11 and the slack pulling line 12. FIG. An intermediate portion of the rope can be hung around a plurality of times, and driving sprockets 14a and 14b provided coaxially on one or both of the grooved drums 10a and 10b and a driven sprocket 18 of the suspension drum 15 As long as the endless chain 19 for power transmission can be hung around, it may be appropriately changed according to the arrangement of the suspension drum 15 in the transporter 8 and the like.

  Although the direction change drum 10 is shown as a configuration including two grooved drums 10a and 10b, an intermediate portion of the cable material constituting the main line 11 and the slack pulling line 12 can be wound around the main line 11 a plurality of times. 11 and the slack pulling line 12 are synchronously performed so that when the cord is moved, the cord is rotated by friction with the cord. Further, it may be configured to include a pair of drums of a type having no groove on the outer peripheral surface, a surface structure other than the groove, or a type subjected to surface treatment.

  As long as the winding and feeding of the lines 5, 11, and 12 can be performed independently by driving the motor, the hole back drum 2, the main drum 3, and the slack pulling drum 4 can be any type of drum. May be adopted.

  The number of teeth of the driven sprocket 18 provided on the suspension drum 15 in the transporter 8 is preferably about 1.5 times the number of teeth of the driving sprockets 14a and 14b provided on the direction changing drum 10 side. You may change suitably according to ratio of the output of the hydraulic motor used as the drive source of the slack pulling drum 4, and the lifting force desired for the said carrying device 8. FIG.

  The chain 19 is exemplified as the power transmission means for transmitting the rotational driving force from the driving sprockets 14a and 14b of the grooved drums 10a and 10b of the direction changing drum 10 to the driven sprocket 18 of the suspension drum 15. Endless power transmission means such as a belt may be employed as long as the rotational driving force can be transmitted.

  The suspension drum 15 has a configuration in which a plurality of driven sprockets 18 corresponding to the grooved drums 14a and 14b in the direction changing drum 10 are provided coaxially, and each driven sprocket 18 is connected to each of the grooved drums 10a and 10b. You may make it connect individually to the drive sprockets 14a and 14b via the endless chain 19 or a power transmission means. Furthermore, the number of grooved drums in the direction changing drum 10 may be changed as appropriate.

  The overhead wire transport device of the present invention may be applied when transporting a transported object along an aerial overhead line in a field other than forestry.

  Of course, various modifications can be made without departing from the scope of the present invention.

  Further, as an application of the present invention, when the speed of lifting and unloading the object to be carried is more important than the unloading force in the transporter 8, the driving sprocket provided on the suspension drum 15 on the direction changing drum 10 side. A driven sprocket having a smaller number of teeth than the number of teeth may be provided.

DESCRIPTION OF SYMBOLS 1 Overhead type conveyance apparatus 2 Hall back drum 3 Main drum 4 Slack pulling drum 5 Hall back line 5a Upper overhead wire part 7 Fixed pulley 8 Transporter 10 Direction change drum 10a, 10b Drum with a groove (drum)
11 Main Line 12 Slack Pulling Lines 14a, 14b Drive Sprocket 16 Hoist Line 15 Suspension Drum 18 Driven Sprocket 19 Chain (Power Transmission Means)

Claims (2)

A hall back drum, a main drum, and a slack pulling drum, which are individually driven by a motor, are provided, and the hall back line fed from the hall back drum is stretched to form an upper overhead line portion with a fixed pulley separated by a desired distance. A cording material in which the tip of the hall back line wound around the fixed pulley is connected to a transporter movably supported by the upper overhead wire part, and a longitudinal intermediate part is wound around a direction changing drum provided in the transporter. One end side of the cable is wound around the main drum as a main line, and the other end side of the cord is wound around the slack pulling drum as a slack pulling line. In the overhead wire type transport device comprising a hoisting drum wound with a hoist line,
A drive sprocket is provided coaxially on the direction changing drum of the carrier,
The suspension drum is coaxially provided with a driven sprocket having more teeth than the driving sprocket,
An overhead-line type transporting device having a configuration in which endless power transmission means is wound around each of the driving and driven sprockets.   The direction change drum of the carrier is a pair of two drums that are wound around the longitudinal intermediate portion of the cord material a plurality of times, and each of the drums is provided with a drive sprocket coaxially. The overhead wire conveying device according to claim 1, wherein an endless power transmission means is hung around the driven sprocket.

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