JP3169978U - Pulley equipment for transporting felled timber - Google Patents

Abstract

[PROBLEMS] To provide a felling material transport pulley that is light and small and has a low risk of dropping of a transport rope and can flexibly cope with various construction routes. A pulley 31 on which a transport rope 2 for transporting felled wood is suspended, and a pulley 31 is pivotally mounted around a single axis L1 on a distal end 32A side, and a base end 32B is fixed to a fixed column portion. In the pulley apparatus for transporting felled timber provided with the arm member 32 to be attached, the uniaxial center L1 is disposed in a direction orthogonal to the longitudinal axial center L2 of the arm member 32, and the arm member 32 is disposed in the longitudinal direction. The rotary joint 51 is rotatable around the axis L2, and the arm member 32 further includes a pivot 52 for swinging the tip 32A up and down around a horizontal axis L3 orthogonal to the longitudinal axis L2. , Provided on the base end 32B side. [Selection] Figure 2

Description

  The present invention relates to a pulley device for conveying felled material.

When transporting felled timber harvested from excessively grown trees or bamboo to a designated gathering site, the work is carried by pulling on a transportation rope constructed in a closed loop between the felling site and the gathering site. ing.
The pulley apparatus on which the transport rope is suspended has a structure in which a plurality of pulleys are arranged in the vertical and horizontal directions in order to prevent the transport rope from dropping off at the bent portion or the inclined portion of the installation route. In addition, by changing the combination and arrangement of a plurality of pulleys, a dedicated pulley device for the installation route bending portion and the inclined portion has been provided. (For example, refer to Patent Document 1).

JP 2010-100150 A

However, the above-described conventional felling material transport pulley apparatus has a problem that it requires a great amount of time and labor (manpower) for transport to mountainous areas, construction work, relocation work and cleanup work.
Further, the conventional pulley apparatus has a problem that it is not possible to easily and quickly provide various erection routes because it is necessary to prepare dedicated apparatuses for the inclined section and the bent section, respectively.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a pulley device for conveying a felling material that is light and small in size and is less likely to drop a conveyance rope and can flexibly cope with various construction routes.

  In order to achieve the above object, the pulley device for transporting felled material according to the present invention includes a pulley on which a transport rope for transporting the felled material is suspended, and the pulley is pivotally mounted on the tip side so as to be rotatable about one axis. And the arm member attached to the fixed pillar portion, the uniaxial center is disposed in a direction perpendicular to the longitudinal axis of the arm member. The arm member includes a rotary joint that is rotatable about the longitudinal axis, and the arm member swings the tip up and down around a horizontal axis perpendicular to the longitudinal axis. A pivot part to be moved is provided on the base end side.

  A pulley on which a transport rope for transporting the felled material is suspended; and an arm member on which the pulley is pivotally attached to the distal end so as to be rotatable about a single axis and the base end is attached to a fixed column portion; In the pulley apparatus for transporting felled timber, the uniaxial center is disposed in a direction perpendicular to the longitudinal axis of the arm member, and the arm member is rotatable about the longitudinal axis. And the universal joint part which the said longitudinal direction axial center can swing freely is comprised in the said base end side.

  Further, the pulley is formed in a convex shape in a side view having a circumferential wall portion that is in contact with the conveying rope on an outer periphery, and a bottom wall portion that has an outer casing shape protruding from the circumferential wall portion, and the bottom wall portion The outer periphery of the belt is a smooth circle, and is a recess that prevents the suspension portion of the transport rope from being detached by the mounting plate portion of the arm member on which the pulley is pivoted, the circumferential wall portion, and the bottom wall portion. A circumferential groove is formed.

  According to the present invention, the pulley can swing flexibly in response to pulling or swinging (twisting or tilting) of the transport rope, and the transport rope can be prevented from falling off. The pulley can be in an appropriate posture in accordance with the bent portion and the inclined portion of the erection route, and can cope with various erection routes. The device can be made smaller and lighter, and installation, relocation, and removal operations can be performed easily and quickly on site.

It is a simplified block diagram explaining the use condition of this invention. It is a principal part sectional side view showing one embodiment of the present invention. It is a principal part section bottom view showing one embodiment of the present invention. It is a principal part cross-sectional bottom view which shows other embodiment of this invention. It is use condition explanatory drawing of this invention. It is use condition explanatory drawing of this invention. It is use condition explanatory drawing of this invention. It is operation | movement explanatory drawing of this invention. It is a principal part cross-sectional bottom view which shows another embodiment of this invention. It is a principal part cross-sectional side view which shows another embodiment of this invention. It is a use condition explanatory view of a reference example.

Hereinafter, the present invention will be described in detail based on the illustrated embodiment.
As shown in FIG. 1, the pulley device for transporting felled material of the present invention is suspended by a transport rope 2 that transports (pulls) the felled material W felled at a felling site J such as a mountainous area to a predetermined gathering site S ( It is used for the installation part 3 to be stretched). A plurality (many) of the erected parts 3 are disposed in the felling land J and the logging area S.

In FIG. 6, the erection part 3 includes a fixed pillar part 5 made of trees, bamboo, etc. existing in the logging area J and the logging area S, or a pile piled up, and the flexible part wound around the pillar part 5. And a fastening member 6 such as a fastening belt having a belt-like or string-like body and a connection fitting such as a hook.
And a pulley 31 on which the transport rope 2 is suspended, and an arm member 32 in which the pulley 31 is pivotally attached to the distal end 32A side and the base end 32B is attached to the column portion 5 via the fastening member 6. In addition, the present invention has a pulley device for transporting felled timber (hereinafter sometimes referred to as a pulley device). The pulley device is lightweight and small, and can be carried by an operator alone.

2 and 3, the arm member 32 has a pulley 31 that is rotatable around a uniaxial center (pivot shaft center) L1 on a mounting plate 33 formed on the tip 32A side thereof. It is pivotally attached. The uniaxial center L1 is disposed in a direction perpendicular to the longitudinal axis L2 of the arm member 32.
The arm member 32 has a mounting opening 53 that passes through the base end 32B along the vertical axis L4. The fastening member 6 is attached to the attachment opening 53. The vertical axis L4 may be referred to as a mounting opening axis L4.

  The pulley 31 has a circumferential concave groove 31d around which the conveyance rope 2 is suspended, and an outer wall-shaped bottom wall portion 31a that prevents the conveyance rope 2 from dropping from the circumferential concave groove 31d. The bottom wall portion 31a is formed in a sprocket shape (gear shape) in which cutout portions 31b that open at a predetermined interval (in the direction of the uniaxial center L1) are formed around the uniaxial center L1. In other words, the locking protrusions 31c that prevent the transport rope 2 from dropping downward are provided on the bottom surface side of the pulley 31 at a predetermined interval around the uniaxial center L1.

  The arm member 32 is arranged between the pulley 31 and the mounting opening 53 in the longitudinal direction N, and between the pulley 31 side (tip 32A side) and the mounting opening 53 side (base end 32B side) around the longitudinal axis L2. The rotary joint portion 51 is rotatable.

  As shown in FIGS. 5 and 6, the arm member 32 has a horizontal axis (pivot axis) between the rotary joint 51 and the mounting opening 53 in the longitudinal direction N, as shown in FIGS. There is a pivot 52 that swings in the direction of arrow Y around L3. In other words, the tip end 32A is swung up and down around the horizontal axis L3 in a use state where the base end 32B is attached to the column portion 5 and a tensile force is applied from the transport rope 2 (swing to the front upper side and the rear lower side). It has a pivot 52 on the base end 32B side.

As shown in FIGS. 2 and 3, the pivotal portion 52 has a U-shaped mounting member 63 disposed in a sandwiched manner on a connecting convex portion 62 that protrudes toward the base end 32 </ b> B, and is connected by a pin member 61. This is a place where the projection 62 and the mounting member 63 are pivotally connected (pin coupled).
A space surrounded by the connecting convex portion 62 and the attachment member 63 is defined as an attachment opening 53.

  Further, in the reference posture state shown in FIGS. 2 and 3, the uniaxial center L1, the longitudinal axial center (rotating axial center) L2, and the horizontal axial center L3 are arranged orthogonal to each other. ing. Further, the center line of the groove width of the circumferential concave groove 31d of the pulley 31 and the longitudinal axis (the rotational axis of the rotary joint portion 51) L2 are arranged on the same straight line. The arm member 32 has a step part (offset part) 32C for aligning the center line of the circumferential groove 31d with the longitudinal axis L2 near the tip 32A.

The rotary joint 51 surrounds a cylindrical male part 51a having an outer flange part, an outer periphery of the outer flange part of the male part 51a, and an outer flange step surface (on the tip 32A side). It has a surrounding wall portion 51b that is rotatably locked around the longitudinal axis L2. The male part 51a protrudes to the base end 32B side, and an outer flange part for engagement is formed at the protruding side end part. An engagement connecting portion between the outer flange portion of the male portion 51a and the surrounding wall portion 51b is used as the rotary joint portion 51.
In another embodiment shown in FIG. 4, the rotary joint 51 has a spherical or hemispherical protruding end portion of the male portion 51a, and the protruding end portion of the male portion 51a slides on the surrounding wall portion 51b. A spherical seat that is in contact is formed, and other configurations are the same as those of the embodiment described with reference to FIGS.

  In FIG. 1, the felled material transporting device (method) includes a rotating drum 8 that drives the transport rope 2 to rotate, and a winch (winding machine) 7 that imparts appropriate tension to the transport rope 2. A drive source E such as a construction machine or a forest work vehicle, and an operation unit 9 capable of operating the rotating drum 8 and the winch 7 are provided. The conveyance rope 2 should just be able to convey the felling material W, such as a metal wire rope and a synthetic resin fiber cross rope.

Next, the usage method (action) of the pulley device for conveying felled material according to the present invention will be described.
As shown in FIG. 5, the base end 32 </ b> B is attached to the column portion 5 via the fastening member 6 with the mounting opening axis L <b> 4 being vertical. The pivotal portion 52 causes the tip 32A of the arm member 32 to swing downward after the horizontal axis L3, the pulley 31 is suspended, and the transport rope 2 can be easily suspended.

  When tension is applied to the suspended transport rope 2 by the winder 7 or the like, the pulley 31 is pulled away from the column portion 5, and the pulley 31 (the tip 32 </ b> A of the arm member 32) pulls the transport rope 2. While maintaining the suspended state, it swings forward and upward about the horizontal axis L3, and the uniaxial center L1 is parallel to the horizontal installation surface G (approximately 0 degrees), so that it is uniaxial as shown in FIG. The center L1 swings with respect to the horizontal installation surface G to a vertical shape (approximately 90 degrees). It should be noted that the uniaxial center L1 is used in a tilted posture (of the arm member 32) with an inclination of more than 0 degrees and less than 90 degrees or in a posture in which the tip 32A swings further upward (rear upward). Is also possible.

  Regardless of the method of attaching the base end 32B to the column portion 5, the fastening member 6, and the skill of the operator, the distal end 32A (the pulley 31) can be reliably swung by the pivot portion 52. Further, even if the tensile force is weakened, the tip 32A of the arm member 32 swings rearward and downward, absorbs the bending of the transport rope 2, maintains the suspended state, and prevents falling off.

  Further, as shown in FIG. 11, in the reference example that does not include the rotary joint portion 51, when the column portion 5 is erected on the inclined installation surface G ′, the conveyance rope 2 is installed in an inclined shape. Even so, the portion suspended by the pulley 31 is forced to be horizontal. In such a step-like suspension state, a force is applied in the direction along the uniaxial center L1 at the suspension start position and the suspension end position where the transport rope 2 is suspended from the pulley 31, and the drop is easily dropped. In particular, when the felling material W is towed, there is a problem that it is dropped and the conveyance work is interrupted and the work efficiency is lowered.

  However, in the pulley device of the present invention, the tip 32A of the arm member 32 and the pulley 31 can be rotated (rotated) about the longitudinal axis L2 by the rotary joint portion 51. Therefore, as shown in FIG. The distal end 32A of the arm member 32 and the pulley 31 rotate around the longitudinal axis L2, and the transport rope 2 is suspended on the pulley 31 in a straight line (as viewed from the longitudinal axis L2). The transport rope 2 can be suspended in parallel to the inclined installation surface G ′, and the felled material W can be transported easily. It can be said that the pulley 31 swings naturally along the transport rope 2.

Further, from the posture shown in FIG. 8 (a), when the pulley 31 receives a tensile force or the like stronger than the other side on either the suspension start side or the suspension end side of the pulley 31, The posture is changed as shown in FIGS. 8B and 8C.
For example, even if the pulling material W causes the pulling material W to have different pulling forces on the suspension start side and the suspension end side, the pulley 31 tilts around the longitudinal axis L2 toward the heavy load side. The conveyance rope 2 is prevented from falling off.
In addition, when installing the installation route, the pulley 31 can be tilted smoothly when it is installed with a tensile force applied to either the suspension start side or the suspension end side to form a bent or inclined portion of the route. In addition, a complicated erection route can be formed quickly.
The pulley 31 swings (rotates) about two axes around the longitudinal axis L2 and the horizontal axis L3, and can change the direction of the transport rope 2 by changing to various postures. Let it form quickly.

  Further, although not shown in the drawing, a suspension ring-like or string-like felling material connecting portion to which the felling material W is attached is suspended from the transport rope 2. When this felled material connection part (hanging part) passes through the pulley 31, it hangs down from the notch part 31b (between the locking projection piece 31c and the locking projection piece 31c) and smoothly wraps around the transport rope 2 without being caught. Enable driving. Further, the bottom wall portion 31a (locking protrusion 31c) prevents the transport rope 2 from falling off.

Another embodiment is shown in FIGS.
The arm member 32 has a universal joint 50 between the mounting opening 53 and the pulley 31.
The universal joint portion 50 is capable of rotating the arm member 32 about the longitudinal axis L2 (free) and swinging the longitudinal axis L2.
The universal joint portion 50 includes a sphere portion 50a projecting from the step portion 32C toward the base end 32B, a sphere lock receiving portion 50b formed in the vicinity of the mounting opening 53 and slidably holding the sphere portion 50a, Consists of.
9 and 10, the universal joint portion 50 is swingable about a horizontal axis L3 that is orthogonal to the uniaxial center L1 and the longitudinal axis L2 and passes through the center of the spherical portion 50a. Yes, it is swingable about a swing axis (sphere axis) L5 that is orthogonal to the horizontal axis L3 and the longitudinal axis L2 and passes through the center of the spherical portion 50a.

The tip 32A (the pulley 31) can rotate about the longitudinal axis L2 by the rotation of the sphere 50a, and the tip 32A (the pulley 31) can swing about the horizontal axis L3 by the swing of the sphere 50a. Freely (in the arrow Ya direction) and swingable around the spherical axis L5 (in the arrow Yb direction).
That is, the number of the universal joint portions 50 is one, and the same operation and effect as the rotary joint portion 51 and the pivot portion 52 of the embodiment described in FIGS. 1 to 8 described above can be obtained. Oscillate (rotate) around the longitudinal axis L2, around the horizontal axis L3, and around the oscillation axis L5 to change the posture into a more various orientation. It can be converted, and complex erection routes can be formed more easily and quickly.

Further, the pulley 31 includes a circumferential wall portion 31e with which the conveyance rope 2 contacts the outer periphery, and an outer wall-shaped bottom wall that prevents the conveyance rope 2 from falling off the circumferential wall portion 31e and is formed into a smooth circular shape on the outer periphery. It has a portion 31a and is formed in a convex shape in side view.
Further, the arm member 32 has a mounting plate portion 33 to which the pulley 31 is pivotally attached on the tip 32A side.
The mounting plate portion 33 is formed in a circular shape larger than the diameter dimension of the pulley 31 (circumferential wall portion 31e and bottom wall portion 31a).
Further, as shown in FIG. 10, a corner portion 36 where the circumferential wall portion 31e and the bottom wall portion 31a are in contact with each other is formed in a smooth R shape (concave arc shape when viewed from the side), and the outer diameter upper edge portion of the bottom wall portion 31a The (corner portion) 37 is formed in a smooth R shape (convex arc shape when viewed from the side), and the felling material connecting portion (hooking portion) suspended from the suspended transport rope 2 is easily (smoothly aligned) To) hang down.

  Then, the suspension portion 2a of the transport rope 2 is surrounded and detached from the three directions of the upper surface, the inner peripheral surface, and the lower surface by the mounting plate portion 33, the circumferential wall portion 31e, and the bottom wall portion 31a of the arm member 32. A concave circumferential groove 30 is formed to prevent this.

Here, when the felling material connection part (hanging part) suspended by the conveyance rope 2 is provided with a large suspension ring shape or an unequal pitch, for example, the sprocket pulley shown in FIG. 3 or FIG. In 31 (having the notch portion 31b), it may be caught by the locking protrusion 31c. However, as in the embodiment of FIGS. 9 and 10, the bottom wall portion 31 a having a non-sprocket (non-gear) shape and having a circular outer casing shape can be smoothly conveyed without being caught.
Further, since the mounting plate portion 33 is larger than the pulley 31 and has a circular shape, it can be prevented from being detached upward (mounting plate portion 33 side), and the width dimension of the circumferential wall portion 31e on which the transport rope 2 is suspended (see FIG. 3 and the pulley 31 of FIG. 4) and can be used for the thick transport rope 2.

In another embodiment, although not shown, the mounting plate portion 33 and the pulley 31 in the embodiment described with reference to FIGS. 2 to 4 are replaced with the mounting plate portion 33 and the pulley described with reference to FIGS. Replaced with 31.
Further, although not shown in the other embodiments, the universal joint described with reference to FIG. 9 instead of the rotary joint 51 and the pivot 52 in the embodiment described with reference to FIGS. A part 50 is provided.

  The design of the present invention can be changed, and the rotary joint portion 51 may be provided on the proximal end 32B side or the distal end 32A side of the arm member 32. Further, the rotary joint portion 51 can be a mechanism other than that shown in the drawing as long as the pulley 31 is rotatable around the longitudinal axis L2 with respect to the base end 32B.

  As described above, in the pulley device for transporting the felling material according to the present invention, the pulley 31 on which the transport rope 2 for transporting the felling material W is suspended, and the pulley 31 on the tip 32A side pivots around the single axis L1. And an arm member 32 having a base end 32B attached to the fixed column portion 5, and a timber transport pulley apparatus having a single axis L1 as a longitudinal axis L2 of the arm member 32. The arm member 32 includes a rotary joint portion 51 that can rotate about the longitudinal axis L2, and the arm member 32 further has a tip 32A that is horizontal to the longitudinal axis L2. Since the pivot 52 that swings up and down around the center axis L3 is provided on the base end 32B side, the pulley 31 swings flexibly in response to pulling or swinging (twisting or tilting) of the transport rope 2. In addition, the transport rope 2 can be prevented from falling off (detaching). The pulley 31 can be in an appropriate posture in accordance with the bent portion or the inclined portion of the erection route, and can correspond to various erection routes. The device can be made smaller and lighter, and installation, relocation, and removal operations can be performed easily and quickly on site. Further, the pulley 31 can be appropriately swung along the transport rope 2 without being affected by the method and members attached to the column portion 5 and the skill of the operator. Further, the transport rope 2 can be easily installed so as to be parallel to the inclined installation surface G ′. It is possible to prevent the transport rope 2 from falling off due to the influence of the force and load on the transport rope 2.

  Further, the pulley 31 on which the transport rope 2 for transporting the felled material W is suspended, and the pulley 31 is pivotally mounted around the single axis L1 on the tip 32A side, and the base end 32B is fixed to the fixed column portion 5. In the pulley apparatus for transporting felled timber provided with the arm member 32 to be attached, the uniaxial center L1 is disposed in a direction orthogonal to the longitudinal axial center L2 of the arm member 32, and the arm member 32 is Since the base end 32B side is provided with a universal joint 50 that can rotate around the direction axis L2 and the longitudinal axis L2 can swing freely, against the pulling or swinging (twisting or tilting) of the transport rope 2 Thus, the pulley 31 swings flexibly so that the transport rope 2 can be prevented from dropping off. The pulley 31 can be in an appropriate posture in accordance with the bent portion or the inclined portion of the erection route, and can cope with various erection routes. The device can be made smaller and lighter, and installation, relocation, and removal operations can be performed easily and quickly on site. Further, the pulley 31 can be appropriately swung along the transport rope 2 without being affected by the method and members attached to the column portion 5 and the skill of the operator. Further, the transport rope 2 can be easily installed so as to be parallel to the inclined installation surface G ′. It is possible to prevent the transport rope 2 from falling off due to the influence of the force and load on the transport rope 2. Further, the apparatus can be made lighter and smaller, and can be easily manufactured.

  Further, the pulley 31 is formed in a convex shape in a side view having a circumferential wall portion 31e with which the transport rope 2 is in contact with an outer periphery and an outer bowl-shaped bottom wall portion 31a protruding from the circumferential wall portion 31e. The outer periphery of the portion 31a is a smooth circle, and the suspension portion 2a of the transport rope 2 is detached by the mounting plate portion 33 of the arm member 32 on which the pulley 31 is pivotally attached, the circumferential wall portion 31e, and the bottom wall portion 31a. Concave groove 30 is formed to prevent slipping, so even if the felling material connection part (hanging part) suspended from the transport rope 2 has a large hanging ring shape or an unequal pitch, it is transported smoothly. it can. The circumferential dimension of the circumferential wall 31e on which the transport rope 2 is suspended can be increased, and the thick transport rope 2 can be handled.

2 Transport rope 2a Suspension part 5 Pillar part
30 concave groove
31 pulley
31a Bottom wall
31e Circumferential wall
32 Arm member
32A tip
32B Base end
33 Mounting plate
50 Universal joint
51 Rotary joint
52 Pivoting section W Logging material L1 Single axis L2 Longitudinal axis L3 Horizontal axis

Claims (3)

The pulley (31) on which the transport rope (2) for transporting the felled timber (W) is suspended, and the pulley (31) is pivotally mounted around the single axis (L1) on the tip (32A) side. And an arm member (32) having a base end (32B) attached to the fixed column portion (5), and a felling material transport pulley device comprising:
The uniaxial center (L1) is disposed in a direction orthogonal to the longitudinal axial center (L2) of the arm member (32),
The arm member (32) includes a rotary joint portion (51) rotatable around the longitudinal axis (L2),
Further, the arm member (32) has a pivot portion (52) for vertically swinging the tip (32A) about a horizontal axis (L3) orthogonal to the longitudinal axis (L2). A pulley device for transporting felled timber, which is provided on the base end (32B) side. The pulley (31) on which the transport rope (2) for transporting the felled timber (W) is suspended, and the pulley (31) is pivotally mounted around the single axis (L1) on the tip (32A) side. And an arm member (32) having a base end (32B) attached to the fixed column portion (5), and a felling material transport pulley device comprising:
The uniaxial center (L1) is disposed in a direction orthogonal to the longitudinal axial center (L2) of the arm member (32),
The arm member (32) is rotatable about the longitudinal axis (L2), and the universal joint (50) is swingable about the longitudinal axis (L2). The base end (32B) A pulley device for transporting felled timber, which is provided on the side. The pulley (31) has a side surface having a circumferential wall part (31e) with which the conveying rope (2) is in contact with an outer periphery and an outer bowl-shaped bottom wall part (31a) protruding from the circumferential wall part (31e). Formed in a convex shape, the outer periphery of the bottom wall (31a) is a smooth circle,
By means of the mounting plate (33) of the arm member (32) to which the pulley (31) pivots, the circumferential wall (31e), and the bottom wall (31a), the transport rope (2) The pulley apparatus for conveying a felling material according to claim 1 or 2, wherein a concave groove (30) for preventing the suspension portion (2a) from being detached is formed.

Images