JP7166144B2 - winch drive - Google Patents

Description

Application of Article 30, Paragraph 2 of the Patent Act On March 27, 2018, announced at a training session on a new overhead wire collection system held at Tanabe City Oto Sogo Bunka Kaikan (2567-1 Ayukawa, Tanabe City, Wakayama Prefecture)

The present invention relates to winch drives.

Conventionally, a winch in which a winch drum is rotatably supported by a winch body is known, and as a winch driving device for driving this winch, for example, the one described in Patent Document 1 is known. This patent document 1 describes a winch driving device for driving a two-trunk winch. Specifically, the two winch drums of a two-trunk winch are rotated by a winch drive device, respectively, and the rope (wire) is paid out and wound up, thereby felling lumber from a lumber logging site. It describes transporting felled timber to a lumberyard where lumber is harvested.

In the conventional winch driving device as described above, a hydraulic motor for rotating the winch drum in forward and reverse directions is provided at one end of the winch drum, and a bearing member is provided at the other end of the winch drum. In this case, it is possible to increase the output of the winch by using a large hydraulic motor. However, when a large hydraulic motor is used, centrifugal force acts on the internal plunger mechanism, so it is necessary to ensure rigidity against the centrifugal force, which may increase the weight of the hydraulic motor itself. Therefore, as the size of the hydraulic motor increases, it becomes more difficult to rotate the winch drum at high speed, and there is concern that the maximum number of revolutions of the winch drum may be set low.

On the other hand, if a small hydraulic motor is used, the winch drum can be rotated at high speed, and although the maximum number of revolutions of the winch drum can be set high, there is concern that it will be difficult to increase the output of the winch. be done.

Japanese Patent No. 4049304

SUMMARY OF THE INVENTION It is an object of the present invention to provide a winch driving device capable of achieving both high-speed rotation of a winch drum and increased output of a winch.

The present invention constitutes means for solving the above-described problems as follows. That is, the present invention is a winch driving device for driving a winch in which a winch drum is rotatably supported by a winch body, wherein a pair of hydraulic motors are arranged at both ends of the winch drum in the rotation axis direction so as to face each other. and the winch drum and the pair of hydraulic motors are provided so as to be rotatable together.

According to the above configuration, compared to the case where the winch drum is driven by a single hydraulic motor, it is possible to reduce the size of the pair of hydraulic motors. can be planned. Moreover, since the winch drum is rotatably supported by the rotating portions of the pair of hydraulic motors, bearing members such as bearings are not required, and the number of parts can be reduced.

In the present invention, the pair of hydraulic motors are first and second hydraulic motors provided at both ends of the winch drum in the rotation axis direction, and the first hydraulic motor is the first hydraulic motor of the winch body. It has a first fixed part integrally provided with the wall part, and a first rotating part rotatably provided with respect to the first fixed part, and the second hydraulic motor is adapted to the winch. a second fixing portion provided integrally with a second wall portion provided opposite to the first wall portion of the main body; and a second fixing portion provided rotatably with respect to the second fixing portion. and the winch drum is provided between the first and second rotating parts, and the winch drum is driven by the rotation of the first and second rotating parts. preferable. According to this configuration, the first and second hydraulic motors can share half the output of the winch. 1. The size of the second hydraulic motor can be reduced. As a result, the weight of the first and second hydraulic motors can be reduced, the high-speed rotation of the winch drum can be realized, and the maximum number of revolutions of the winch drum can be set high.

In the present invention, the first fixing portion is detachably provided with respect to the first wall portion, the second fixing portion is detachably provided with respect to the second wall portion, and the winch It is preferable that the drum is detachably attached to the first and second rotating parts. According to this configuration, the winch drum is rotatably supported by the first and second rotating parts of the hydraulic motor having the first and second bearing functions, thus eliminating the need for bearing members such as bearings. . Further, since the winch drum can be rotated at high speed by the speed change action of the first and second hydraulic motors, there is no need to separately provide a speed change mechanism for high speed rotation of the winch drum. Therefore, the number of parts can be reduced, and cost reduction can be achieved.

In the present invention, it is preferable that the winch is at least one of a lifting line winch and a haulback line winch provided in the wire collector. In this case, the haulback line winch is provided at the front end of the winch body, the lifting line winch is provided at the rear side of the haulback line winch, and the winch body is provided with the winch for the lifting line. It is preferable that an endless line winch is provided on the side of the According to this configuration, the output of the lifting line winch and the haulback line winch of the overhead wire harvesting machine can be divided in half by the first and second hydraulic motors, and the tension of the lifting line and the haulback line winch can be divided in half. The tension of the back line can be easily secured. In addition, by miniaturizing the first and second hydraulic motors, the winch drum can be rotated at high speed, and the maximum number of revolutions of the winch drum can be set high. It can be picked up and delivered at high speed.

According to the present invention, it is possible to reduce the size of the pair of hydraulic motors compared to the case where the winch drum is driven by one hydraulic motor. can be planned. Moreover, since the winch drum is rotatably supported by each rotating portion of the hydraulic motor having a pair of bearing functions, bearing members such as bearings are not required, and the number of parts can be reduced.

1 is a perspective view showing an overhead wire collector equipped with a winch driving device according to an embodiment of the present invention; FIG. FIG. 2 is a side view showing the overhead wire collector of FIG. 1; 3 is a cross-sectional view taken along the line X1-X1 of FIG. 2; FIG. FIG. 2 is a diagram showing a schematic configuration of an overhead wire collecting system including the overhead wire collecting machine of FIG. 1; FIG. 5 is a plan view showing an example of the collection range of the overhead wire collection system of FIG. 4 ; FIG. 2 is a diagram showing a schematic configuration of a hydraulic circuit of the wire collector of FIG. 1;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an overhead wire collector 1 equipped with a winch driving device according to an embodiment of the present invention. FIG. 2 is a side view showing the overhead wire collector 1 of FIG. 3 is a cross-sectional view taken along the line X1-X1 of FIG. 2. FIG. FIG. 4 is a diagram showing a schematic configuration of an overhead wire collecting system 100 including the overhead wire collecting machine 1 of FIG. FIG. 5 is a plan view showing an example of the collection range R1 of the overhead wire collection system 100 of FIG. FIG. 6 is a diagram showing a schematic configuration of a hydraulic circuit of the wire collector 1 of FIG.

First, a schematic configuration of the overhead wire collection system 100 will be described with reference to FIGS. 4 and 5. FIG. In this embodiment, the overhead wire collection system 100 is configured as an endless tier type overhead wire collection system. As shown in FIGS. 4 and 5, the overhead wire collection system 100 includes an overhead wire collection machine 1, a carrier (carriage) 2, a grapple device 3, a skyline (main rope) SKL, an endless line (endless rope) ELL, and a lifting line. It consists of (hoisting rope) LFL, haulback line (retrieving rope) HBL, and the like.

The skyline SKL spans between a lumber harvesting site P1 and a leading pole position P2 provided at a position farther than a lumber logging site P3. The skyline SKL extends in a substantially straight line, and for example, one end of the skyline SKL is connected to trees or the like at the lumber dumping site P1, and the other end of the skyline SKL is connected to the trees or the like at the front pillar position P2.

A carrier 2 is attached to the skyline SKL via a pulley S so as to be able to travel. Both ends of an endless line ELL forming an endless track are connected to the carrier 2 . The endless line ELL is stretched over a plurality of pulleys E and a winch drum 11E of an endless line winch 10E of the wire collector 1 . In this case, the pulley E is installed in the vicinity of the lumber harvesting site P1, in the vicinity of the front pole position P2, in the vicinity of the overhead wire harvesting machine 1, or the like.

By causing the endless line ELL to run by the endless line winch 10E provided in the overhead wire collecting machine 1, the carriage 2 can be moved along the skyline SKL. Specifically, by driving the winch drum 11E of the endless line winch 10E so as to let out the endless line ELL in the E1 direction, the carriage 2 moves in the S1 direction along the skyline SKL. Conversely, by driving the winch drum 11E so as to let out the endless line ELL in the E2 direction, the carrier 2 moves in the S2 direction along the skyline SKL.

A pair of pulleys La, La is suspended from the carrier 2 via a connecting member such as a wire. The middle part is bridged. A grapple device 3 is provided at an intermediate portion of the lifting line LFL positioned between the pair of pulleys La, La. The grapple device 3 is suspended from the lifting line LFL via a pair of pulleys Lb, Lb.

One end of the lifting line LFL is connected to, for example, trees in the lumber logging site P3. The other end of the lifting line LFL is wound around the winch drum 11L of the lifting line winch 10L of the wire collector 1 . The lifting line LFL includes the pair of pulleys La, La, the pair of pulleys Lb, Lb, the pulley L provided near the lumber collecting site P1, the pulley L provided near the overhead wire collecting machine 1, and the like. It is handed over.

The grapple device 3 can be raised and lowered by winding and unwinding the lifting line LFL to and from the winch drum 11L of the lifting line winch 10L provided in the overhead wire harvester 1 . Specifically, by driving the winch drum 11L so as to feed the lifting line LFL from the winch drum 11L in the L1 direction, the length of the intermediate portion of the lifting line LFL positioned between the pair of pulleys La and La is increased. Then, the grapple device 3 descends. Conversely, by driving the winch drum 11L so as to wind the lifting line LFL around the winch drum 11L, the length of the intermediate portion of the lifting line LFL is reduced and the grapple device 3 is lifted.

One end of the haulback line HBL pulled out from the wire collector 1 is connected to the side surface of the grapple device 3 . The other end of the haulback line HBL is wound around the winch drum 11H of the haulback line winch 10H of the overhead wire collector 1 . The haulback line HBL is stretched over a pulley Ha provided at a position away from the skyline SKL, a pulley H provided near the pulley Ha, a pulley H provided near the wire collector 1, and the like. there is Here, the above-described pair of pulleys Lb, Lb are provided on the upper portion 3a of the grapple device 3, and the haul-back line HBL is connected to the lower portion 3b of the grapple device 3. As shown in FIG. The lower part 3b of the grapple device 3 is pivotally mounted with respect to the upper part 3a. A pair of grapple arms 3c, 3c are provided in the lower part 3b of the grapple device 3. By closing the pair of grapple arms 3c, 3c, the lumber is grasped from both sides, and in this state, the lumber pile P1 It is possible to transport to Further, by opening the pair of grapple arms 3c, 3c, it is possible to release the gripped lumber and unload it to the lumber collection site P1.

A winch 10H for the haulback line provided in the overhead wire harvester 1 winds and feeds the haulback line HBL to and from the winch drum 11H, thereby moving the grapple device 3 in the lateral direction intersecting the spanning direction of the skyline SKL. It is possible to move to In this case, by driving the winch drum 11H of the winch 10H for the haul-back line in synchronization with the driving of the winch drum 11L of the winch 10L for the lifting line described above, the lifting line LFL on which the grapple device 3 is suspended tension is adjusted.

Specifically, by driving the winch drum 11L so as to feed the lifting line LFL from the winch drum 11L in the L1 direction, the length of the intermediate portion of the lifting line LFL positioned between the pair of pulleys La and La is increased. As a result, the grapple device 3 can move laterally away from the skyline SKL. In this case, by synchronously driving the winch drum 11H so as to wind the haulback line HBL around the winch drum 11H, the grapple device 3 is pulled in a direction approaching the pulley Ha described above, and the horizontal pulley is pulled away from the skyline SKL. The grapple device 3 moves in the direction.

Conversely, by driving the winch drum 11L so as to wind the lifting line LFL around the winch drum 11L, the length of the intermediate portion of the lifting line LFL is reduced, and the grapple device 3 approaches the skyline SKL. It will be pulled to. In this case, the winch drum 11H is synchronously driven so that the haulback line HBL is extended from the winch drum 11H in the direction H1, thereby moving the grapple device 3 toward the skyline SKL.

By extending and winding the haulback line HBL in this manner, it is possible to move the grapple device 3 not only directly below the skyline SKL but also laterally away from the skyline SKL. By such movement of the grapple device 3, for example, it is possible to pick up lumber in a picking range R1 as shown in FIG. In this case, the lumber collection range R1 can be changed to any range that includes the logging site P3 by adjusting the installation position of the pulley Ha described above. It should be noted that the payout and winding of the haul back line HBL can be performed in synchronism with the movement of the carrier 2 due to the running of the endless line ELL described above and the raising and lowering of the grapple device 3 due to the payout and winding of the lifting line LFL. It is possible.

As shown in FIGS. 1 to 3, the overhead wire harvester 1 has three winches (an endless line winch 10E, a lifting line winch 10L, and a hallback line winch 10H), and these three winches 10E and 10L. , 10H and an engine 21 which is a driving source for the three-cylinder type hydraulic material collecting machine. That is, the overhead wire harvester 1 includes an endless line winch 10E for winding and feeding the endless line ELL, a lifting line winch 10L for winding and feeding the lifting line LFL, and a whole back line HBL winding.・Equipped with a winch 10H for the haul-back line that draws out. Components of a winch driving device for rotating each winch 10E, 10L, 10H are mounted on a frame ASSY (frame assembly) 12, which is a winch main body. The frame ASSY 12 is provided integrally with an engine frame 21a in which the engine 21 is housed. The frame ASSY 12 and the engine frame 21a are provided on a base frame 16 installed on the ground. A winch cover 17 is attached to the side of the lifting line winch 10L and the haulback line winch 10H.

A haulback line winch 10</b>H is provided at the front end of the overhead wire collector 1 . The haul-back line winch 10H has a structure in which a winch drum 11H is rotatably supported by a frame ASSY 12. As shown in FIG. A rotating shaft of the winch drum 11H extends in the left-right direction. In this embodiment, the winch drum 11H of the haul-back line winch 10H is rotatably supported by the first and second walls 12A and 12B that constitute the frame ASSY 12. As shown in FIG. The first and second wall portions 12A and 12B are arranged parallel to each other with a predetermined interval in the left-right direction. As shown in FIG. 3, the haul-back line winch 10H has a pair of hydraulic motors (first and second hydraulic motors) 13A and 13B arranged opposite to each other in the direction of the rotation axis of the winch drum 11H. A winch drum 11H is driven by a pair of hydraulic motors 13A and 13B. Details of the hole-back line winch 10H will be described later.

A lifting line winch 10L is provided behind the haulback line winch 10H. The lifting line winch 10L has a structure in which a winch drum 11L is rotatably supported by a frame ASSY 12. As shown in FIG. A rotating shaft of the winch drum 11L extends in the left-right direction. In this embodiment, the winch drum 11L of the lifting line winch 10L is rotatably supported by the first and second walls 12A and 12B forming the frame ASSY12. The lifting line winch 10L, like the haulback line winch 10H, has a pair of hydraulic motors (first and second hydraulic motors) 13A and 13B arranged opposite to each other on both ends of the winch drum 11L in the rotation axis direction. A winch drum 11L is driven by a pair of hydraulic motors 13A and 13B.

An endless line winch 10E is provided behind the lifting line winch 10L. The endless line winch 10E has a structure in which a winch drum 11E is rotatably supported by a frame ASSY 12. As shown in FIG. A rotating shaft of the winch drum 11E extends in the left-right direction. In this embodiment, the winch drum 11E of the endless line winch 10E is provided on the side of the second wall portion 12B. Unlike the winch 10H for the haulback line and the winch 10L for the lifting line, the endless line winch 10E has a configuration in which the winch drum 11E is driven by the hydraulic motor 13 (see FIG. 6) supported by the second wall portion 12B. It has become. In this embodiment, the hydraulic motor 13 is composed of a triple motor.

The wire collector 1 includes a hydraulic circuit 20 as shown in FIG. 6, for example. By controlling hydraulic oil supplied to the first and second hydraulic motors 13A, 13B of the three winches 10E, 10L, 10H through the hydraulic circuit 20, the three winches 10E, 10L, 10H are driven and controlled. is to be carried out. In this embodiment, by operating an operation lever or the like (not shown), the drive control of the three winches 10E, 10L, and 10H can be performed independently (single control). Further, by operating an operation lever or the like (not shown), as described above, it is possible to drive and control the winch 10H for the haul-back line in synchronization with the winch 10E for the endless line and the winch 10L for the lifting line. (tuning control).

The hydraulic circuit 20 mainly includes a hydraulic oil tank 22 that stores hydraulic oil, a hydraulic pump unit 23 that is driven by the engine 21, a winch drive unit 24 that drives the winches 10E, 10L, and 10H, a switching control unit 25, A tuning control section 26, a tension control section 27, and the like are provided. The hydraulic pump section 23 is provided with three hydraulic pumps (an endless line pump 23E, a lifting line pump 23L, and a hall-back line pump 23H). The hydraulic pump unit 23 is configured as a three-connection hydraulic pump in which these three hydraulic pumps 23E, 23L, and 23H are directly connected to the output shaft of the engine 21. As shown in FIG. In this embodiment, a hallback line pump 23H, an endless line pump 23E, and a lifting line pump 23L are arranged in series in order from the engine 21 side.

Each of the pumps 23E, 23L, 23H of the hydraulic pump unit 23 is configured as a variable displacement hydraulic pump whose pump flow rate (discharge amount) can be changed by adjusting the inclination angle of the swash plate, for example. Each pump 23E, 23L, 23H can be driven by force. In this case, by adjusting the inclination angle of the swash plate built in each pump 23E, 23L, 23H, it is possible to independently control the discharge amount of each pump 23E, 23L, 23H. Specifically, by setting the inclination angle of the swash plate of each of the pumps 23E, 23L, and 23H to 0° (neutral state), each of the pumps 23E, 23L, and 23H is in an idling state in which hydraulic oil is not discharged even if the engine 21 is running. It is possible to control the pumps 23E, 23L, 23H independently. Further, by controlling the inclination angle of the swash plate of each pump 23E, 23L, 23H to the positive side (plus side), each pump 23E, 23L, 23H can be controlled independently. Conversely, by controlling the inclination angles of the swash plates of the pumps 23E, 23L, 23H to the negative side (minus side), the pumps 23E, 23L, 23L, 23E, 23L, 23L, 23L, 23E, 23L, 23L, 23L, 23L, 23L, 23L, 23L, 23L, 23L, 23L, 23L, 23L, 23L, 23L, 23L, 23L, 23L, 23H can be controlled independently.

The hydraulic pump section 23 is connected to the winch driving section 24 via a switching control section 25, a tuning control section 26, a tension control section 27, and the like. The switching control unit 25 is provided with valves and the like for switching the oil passages of the hydraulic circuit 20 . The tuning control unit 26 is provided with valves and the like for performing tuning control of the winch 10H for the hall-back line described above. The tension control unit 27 is provided with valves and the like for maintaining the tension of the endless line ELL, the lifting line LFL, and the hallback line HBL at a predetermined value.

The winch drive section 24 includes three winch drive sections (an endless line winch drive section 24E, a lifting line winch drive section 24L, and a hallback line winch drive section 24H). The endless line winch driving section 24E is connected to the endless line pump 23E, and hydraulic oil discharged from the endless line pump 23E is supplied to the hydraulic motor 13 of the endless line winch driving section 24E. ing. The drive state (forward rotation state, neutral state, and reverse rotation state) of the hydraulic motor 13 is switched according to the drive state (forward rotation state, neutral state, and reverse rotation state) of the endless line pump 23E. Further, the rotation speed of the hydraulic motor 13 is controlled according to the discharge amount of the endless line pump 23E.

The lifting line winch drive unit 24L is connected to a lifting line pump 23L, and the hydraulic oil discharged from the lifting line pump 23L is supplied to the first and second hydraulic motors 13A, 13A, 13A, 13B of the lifting line winch drive unit 24L. 13B at the same time. In accordance with the driving state (normal rotation state, neutral state, and reverse rotation state) of the lifting line pump 23L, the driving state (forward rotation state) of the first and second hydraulic motors 13A and 13B of the lifting line winch drive section 24L , neutral state, and reverse state) are switched at the same time. In addition, the rotational speeds of the first and second hydraulic motors 13A and 13B of the lifting line winch driving section 24L are simultaneously controlled according to the discharge amount of the lifting line pump 23L. In other words, the first and second hydraulic motors 13A and 13B of the lifting line winch driving section 24L rotate in the same direction and at the same rotational speed. , the winch drum 11L of the lifting line winch 10L is driven.

The haul-back line winch drive unit 24H is connected to the haul-back line pump 23H, and hydraulic oil discharged from the haul-back line pump 23H is supplied to the first and second haul-back line winch drive units 24H. They are supplied to the hydraulic motors 13A and 13B at the same time. In accordance with the driving state (normal rotation state, neutral state, and reverse rotation state) of the haul-back line pump 23H, the driving state (forward rotation state, neutral state, and reverse rotation state) of the first and second hydraulic motors 13A and 13B of the haul-back line winch driving section 24H is changed. reverse state, neutral state, and reverse state) are switched at the same time. In addition, the rotational speeds of the first and second hydraulic motors 13A and 13B of the winch driving section 24H for the haul-back line are controlled to be the same according to the discharge amount of the haul-back line pump 23H. In other words, the first and second hydraulic motors 13A and 13B of the haul-back line winch driving portion 24H rotate in the same direction and at the same rotational speed. is configured to drive the winch drum 11H of the winch 10H for the haul-back line.

In this embodiment, as described above, the winch 10H for the haul-back line has a pair of hydraulic motors (first and second hydraulic motors) 13A and 13B opposed to both ends of the winch drum 11H in the rotation axis direction. Arranged configuration. A specific configuration of the haul-back line winch 10H will be described with reference to FIGS. 1 to 3. FIG. As described above, the lifting line winch 10L has the same configuration as the haul-back line winch 10H, but the endless line winch 10E has a different configuration from the haul-back line winch 10H. there is

The first and second wall portions 12A and 12B forming the frame ASSY 12 of the wire collector 1 extend parallel to each other along the vertical direction (vertical direction). Between the first and second walls 12A and 12B is provided a connection wall 12C that covers the outer periphery of the winch drum 11H. A winch drum 11H is accommodated in a space surrounded by the first and second walls 12A and 12B and the connecting wall 12C. First and second hydraulic motors 13A and 13B are arranged to face each other at both ends of the winch drum 11H in the rotation axis direction. The sides of the first and second hydraulic motors 13A and 13B are covered with winch covers 17 (see FIG. 2).

The first hydraulic motor 13A is provided on one end side (the left end side in FIG. 3) of the winch drum 11H in the rotation axis direction. The first hydraulic motor 13A includes a first fixing portion 131A provided integrally with the first wall portion 12A, and a first rotating portion 132A provided rotatably with respect to the first fixing portion 131A. It has Hydraulic oil is supplied to the first hydraulic motor 13A by the haul-back line pump 23H described above, so that the first rotating portion 132A rotates with respect to the first fixed portion 131A.

The first fixing portion 131A is detachably connected to the first wall portion 12A via the flange 14A. Specifically, the first wall portion 12A is formed with a circular opening into which the first fixing portion 131A can be inserted. A flange 14A fixed to the outer peripheral portion of the first fixed portion 131A is fixed to the inner peripheral edge of the opening of the first fixed portion 131A by bolting or the like. 131 A of 1st fixing|fixed part and 12 A of 1st wall parts are provided in the non-rotatable state.

The first rotating portion 132A is housed inside the first fixing portion 131A, and the rotating shaft 133A of the first rotating portion 132A protrudes from the first fixing portion 131A. A flange portion 134A is integrally provided at the tip of the rotating shaft 133A of the first rotating portion 132A. A flange portion 134A of the first rotating portion 132A is detachably connected to a side wall portion (flange portion) of the winch drum 11H by bolting or the like. The first rotating portion 132A and the winch drum 11H are arranged such that the axis of the rotating shaft 133A of the first rotating portion 132A is aligned with the axis of the rotating shaft of the winch drum 11H. The first rotating portion 132A and the winch drum 11H are provided so as to be rotatable together.

The second hydraulic motor 13B is provided on the other end side (the right end side in FIG. 3) of the winch drum 11H in the rotation axis direction. The second hydraulic motor 13B includes a second fixed portion 131B provided integrally with the second wall portion 12B, and a second rotating portion 132B provided rotatably with respect to the second fixed portion 131B. It has Hydraulic oil is supplied to the second hydraulic motor 13B by the haul-back line pump 23H described above, so that the second rotating portion 132B rotates with respect to the second fixed portion 131B.

The second fixing portion 131B is detachably connected to the second wall portion 12B via the flange 14B. Specifically, the second wall portion 12B is formed with a circular opening into which the second fixing portion 131B can be inserted. The flange 14B fixed to the outer peripheral portion of the second fixed portion 131B is fixed to the inner peripheral edge of the opening of the second fixed portion 131B by bolting or the like. The second fixing portion 131B and the second wall portion 12B are provided in a non-rotatable state.

The second rotating portion 132B is accommodated inside the second fixed portion 132B, and the rotating shaft 133B of the second rotating portion 132B protrudes from the second fixed portion 131B. A flange portion 134B is integrally provided at the tip of the rotating shaft 133B of the second rotating portion 132B. The flange portion 134B of the second rotating portion 132B is detachably connected to the side wall portion (flange portion) of the winch drum 11H by bolting or the like. The second rotating portion 132B and the winch drum 11H are arranged so that the axis of the rotating shaft 133B of the second rotating portion 132B and the axis of the rotating shaft of the winch drum 11H are aligned. The second rotating portion 132B and the winch drum 11H are provided so as to be rotatable together.

In the haul-back line winch 10H, the axis of the rotating shaft of the winch drum 11H is provided so as to coincide with the axis of the rotating shafts 133A, 133B of the first and second rotating parts 132A, 132B. The drum 11H and the first and second rotating parts 132A and 132B are provided so as to be rotatable together. The winch drum 11H is driven by the rotation of the first and second rotating parts 132A and 132B of the first and second hydraulic motors 13A and 13B. More specifically, as described above, the hydraulic circuit 20 controls the drive states (normal rotation state, neutral state, and reverse rotation state) of the first and second rotating parts 132A and 132B of the first and second hydraulic motors 13A and 13B. state) are switched at the same time, and the rotational speeds of the first and second rotating portions 132A and 132B of the first and second hydraulic motors 13A and 13B are controlled to be the same. In this way, the winch drum 11H is driven by the first and second rotating parts 132A and 132B of the first and second hydraulic motors 13A and 13B rotating in the same direction and at the same rotational speed. It's like

In this embodiment, as described above, the winch drum 11H of the haul-back line winch 10H is driven by the first and second hydraulic motors 13A and 13B. According to the present embodiment, the size of the first and second hydraulic motors 13A and 13B can be reduced compared to the case where the winch drum 11H is driven by one hydraulic motor. It is possible to achieve both high-speed rotation and improvement in the output of the winch 10H for the haul-back line. This point will be described below.

First, when the winch drum 11H is driven by one hydraulic motor, it is necessary to use a large hydraulic motor in order to increase the output of the winch 10H for the haulback line in order to secure the tension of the haulback line HBL. . In this case, the weight of the hydraulic motor may increase, making it difficult to rotate the winch drum 11H at high speeds, and possibly reducing the maximum number of revolutions of the winch drum 11H. In addition, the hydraulic pump also needs to be enlarged, and depending on the situation, it is necessary to provide a reduction mechanism. On the other hand, when only one small hydraulic motor is used to drive the winch drum 11H, it becomes difficult to increase the output of the winch drum 11H, and there is a possibility that winding will not be possible.

On the other hand, in the present embodiment, the first and second hydraulic motors 13A and 13B can divide the output of the winch 10H for the haulback line in half, thereby easily ensuring the tension of the haulback line HBL. be able to. Therefore, it is not necessary to increase the size of the first and second hydraulic motors 13A and 13B in order to improve the output, and the size of the first and second hydraulic motors 13A and 13B can be reduced. As a result, the weight of the first and second hydraulic motors 13A, 13B can be reduced, the winch drum 11H can be rotated at high speed, and the maximum rotation speed of the winch drum 11H can be set high. As a result, the winding and feeding of the hall back line HBL can be performed at high speed.

Moreover, since the winch drum 11H is rotatably supported by the first and second rotating parts 132A and 132B of the hydraulic motors 13A and 13B having first and second bearing functions, bearing members such as bearings are becomes unnecessary. Since the winch drum 11H can be rotated at high speed by the speed change action of the first and second hydraulic motors 13A and 13B, there is no need to separately provide a speed change mechanism for high speed rotation of the winch drum 11H. Therefore, the number of parts can be reduced, and cost reduction can be achieved.

In the present embodiment, the lifting line winch 10L of the wire collector 1 has the same configuration as the haulback line winch 10H. Therefore, the first and second hydraulic motors 13A and 13B can share the output of the lifting line winch 10L in half, and the tension of the lifting line LFL can be easily secured. Therefore, it is not necessary to increase the size of the first and second hydraulic motors 13A and 13B in order to improve the output, and the size of the first and second hydraulic motors 13A and 13B can be reduced. As a result, the weight of the first and second hydraulic motors 13A, 13B can be reduced, the winch drum 11L can be rotated at high speed, and the maximum rotation speed of the winch drum 11L can be set high. As a result, the lifting line LFL can be wound up and unwound at high speed.

The embodiments disclosed this time are illustrative in all respects and are not grounds for restrictive interpretation. The technical scope of the present invention is not to be interpreted only by the above-described embodiments, but is defined based on the claims. In addition, the technical scope of the present invention includes all modifications within the meaning and range of equivalence to the claims.

In the above embodiment, the present invention is applied to both the driving device of the lifting line winch 10L and the driving device of the haulback line winch 10H. The present invention may be applied to only one of the driving devices of the winch 10H. Further, the present invention may be applied to the driving device of the endless line winch 10E.

In the above embodiment, the case where the wire collector 1 is a three-barrel type hydraulic collector having three winches 10E, 10L, and 10H has been described. However, not limited to this, the overhead wire harvester 1 may be a two-trunk hydraulic harvester equipped with two winches, or a one-trunk hydraulic harvester equipped with one winch. There may be.

In the above embodiment, the case where the present invention is applied to the winch driving device provided in the overhead wire collecting machine 1 used in the endless tier type overhead wire collecting system 100 has been described. However, the present invention is not limited to this, and the present invention may be applied to a winch driving device of an overhead wire collecting machine used in an overhead wire collecting system of a method other than the above. Furthermore, the present invention may be applied to a winch drive device provided in equipment other than the overhead wire collector as long as it is a winch drive device for driving a winch.

INDUSTRIAL APPLICABILITY The present invention can be used for a winch driving device that drives a winch in which a winch drum is rotatably supported by a winch body.

1 overhead wire collector 2 carrier 3 grapple device 10E endless line winch 10L lifting line winch 10H hallback line winch 11E, 11L, 11H winch drum 12 frame ASSY (winch body)
13A First hydraulic motor 131A Fixed part 132A Rotating part 13B Second hydraulic motor 131B Fixed part 132B Rotating part SKY Skyline ELL Endless line LFL Lifting line HBL Hall back line

Claims (3)

A winch driving device for driving a winch in which a winch drum is rotatably supported by a winch body,
A pair of hydraulic motors are arranged facing each other in the direction of the rotation axis of the winch drum,
each rotating part of the winch drum and the pair of hydraulic motors are provided so as to be rotatable together ;
The pair of hydraulic motors are a first hydraulic motor and a second hydraulic motor provided at both ends of the winch drum in the rotation axis direction,
The first hydraulic motor includes a first fixed portion integrally provided with a first wall portion of the winch body, and a first rotating portion rotatably provided with respect to the first fixed portion. and
The second hydraulic motor includes: a second fixing portion integrally provided with a second wall portion provided facing the first wall portion of the winch body; and the second fixing portion and a second rotating portion provided rotatably with respect to
The winch drum is provided between the first rotating portion and the second rotating portion, and the winch drum is driven by the rotation of the first rotating portion and the rotation of the second rotating portion. and
The first fixing portion is detachably provided with respect to the first wall portion, the second fixing portion is detachably provided with respect to the second wall portion,
A flange portion is integrally provided at the tip of the first rotating portion, and the flange portion of the first rotating portion is detachably connected to the side wall portion of the winch drum,
A flange portion is integrally provided at the tip of the second rotating portion, and the flange portion of the second rotating portion is detachably connected to the side wall portion of the winch drum,
A winch driving device , wherein the winch drum is detachably attached to the first rotating portion and the second rotating portion . The winch drive device according to claim 1 , wherein
A winch driving device, wherein the winch is at least one of a lifting line winch and a haulback line winch provided in a wire collector. The winch drive device according to claim 2 ,
The haulback line winch is provided at the front end of the winch body, and the lifting line winch is provided at the rear side of the haulback line winch. A winch driving device, characterized in that a winch for an endless line is provided at the.

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