JP6424138B2 - Forklift attachment - Google Patents

Description

  The present invention relates to an attachment for a forklift, and more particularly, to an attachment suitable for storing a plurality of long objects such as wood in a storage facility such as a container.

  When loading a long object such as wood on a container, forklift attachments shown in Patent Document 1, for example, are used. This attachment is provided with a tongue (gripping member) for gripping a long object in the radial direction at its tip, and the end of the long object is gripped by this tongue and sent to the back of the container. By repeating this operation, a plurality of long objects are loaded in a state where they are stacked in a plurality of stages.

JP-A-6-80399

  The attachment according to Patent Document 1 is configured to grip one end side of a long object, and the other end side tends to swing up, down, left, and right with a portion gripped by the tongue as a fulcrum. If this long object swings up, down, left, or right during loading into the container, the other end will come into contact with the inner wall of the container, resulting in damage such as opening a hole in the inner wall or reducing the safety of the work. There is a problem. In addition, since long objects can only be carried one by one into the container, there is a problem that work efficiency is low and work cost is increased.

  Then, this invention makes it a subject to carry long objects, such as a timber, in a container efficiently and safely.

  In order to solve the above problems, the present invention provides a bottom plate on which a plurality of long objects to be conveyed are placed in parallel, a back plate with which a rear end of the long material abuts, and left and right ends of the bottom plate A forklift attachment comprising: a side plate standing upright from a portion; and a pressing member provided across the left and right side plates closer to the back plate than the tip of the bottom plate did.

  By this attachment, the long object is supported so as to be sandwiched in the vertical direction from the lower side at the tip of the bottom plate and from the upper side by the pressing member. Moreover, the holding member is positioned closer to the back plate side than the tip of the bottom plate, and the long object protrudes upward from the tip of the bottom plate due to the downward weight of the long object protruding from the tip of the bottom plate. Strongly pressed against. For this reason, this elongate object is stably hold | gripped in the up-down direction, and the shake | fluctuation in the up-down direction is prevented. In addition, even if a plurality of long objects placed in parallel on the bottom plate are swung to the left and right, the long objects abut against the left and right side plates, and the wobbling in the left and right directions is also prevented. For this reason, when carrying this long object into the container, it is possible to prevent the end opposite to the side held by the attachment from coming into contact with the inner wall of the container and damaging the inner wall. At the same time, work safety can be ensured. In addition, since a plurality of long objects can be carried into the container at one time, the work efficiency can be greatly improved and the cost can be reduced.

  In the said structure, it can be set as the structure which can change the attachment position to the said side plate of the said pressing member within the surface of the said side plate. Thus, by making the mounting position of the pressing member freely changeable, when a long object is stacked and placed, the pressing member is provided at a position sufficiently separated from the bottom plate on the upper side of the stack, and the attachment The long object can be smoothly carried into the upper stage in a container where the ceiling height is limited while the long object is kept in a horizontal position.

  In each said structure, it can be set as the structure further provided with the extension member provided so that it could protrude from the front-end | tip part of the said bottom face board. By providing the extension member in this way, it is possible to more stably support a long object, and it is possible to reliably suppress the long object from swinging up and down during work.

  In the configuration according to the present invention, a bottom plate on which a plurality of long objects to be transported are placed in parallel, a back plate with which a rear end of the long object abuts, and upward from the left and right end portions of the bottom plate. A forklift attachment comprising a side plate provided upright and a pressing member provided across the left and right side plates on the side closer to the back plate than the tip of the bottom plate is configured. In this way, by configuring the attachment, it is possible to prevent the long object from swinging up and down and left and right during the loading operation into the container, and the long object can be efficiently and safely loaded into the container. can do.

The side view which notched the part which shows 1st embodiment of the attachment for forklifts concerning this invention Partial longitudinal sectional view of the attachment shown in FIG. 1 as seen from the front The perspective view of the attachment shown in FIG. The drive mechanism of the extension member of the attachment shown in FIG. 1 is shown, (a) is a side view with a part cut away, and (b) is a partial longitudinal sectional view as seen from the front. The longitudinal cross-sectional view which shows the pressing member of the attachment shown in FIG. The side view which shows the state which attached the attachment shown in FIG. 1 to the forklift It is a side view which shows the effect | action of the attachment shown in FIG. 1, (a) is the state which piled up the elongate object, (b) is the state which started extraction of an attachment, (c) is extraction of an attachment. Completed state It is a side view which shows the carrying-in process of the elongate thing to a container, Comprising: (a) is the 1st mountain, (b) is the 2nd mountain, (c) is the state which formed the 3rd mountain, respectively. The second embodiment of the attachment for a forklift according to the present invention is shown, (a) is a side view, (b) is a cross-sectional view taken along line bb in (a). The third embodiment of the attachment for a forklift according to the present invention is shown, (a) is a side view, (b) is a front view.

  A first embodiment of a forklift attachment according to the present invention is shown in FIGS. 1 is a side view with a part cut away, FIG. 2 is a partial longitudinal sectional view as seen from the front, and FIG. 3 is a perspective view. The attachment 1 includes a bottom plate 10, a back plate 20, a side plate 30, and a pressing member 40 as main components.

  The bottom plate 10 is configured so that a plurality of long objects M such as wood to be conveyed can be placed in parallel. As shown in FIGS. 4A and 4B, an extension member 11 is provided at the tip of the bottom plate 10 so as to protrude from the tip. The extension member 11 is accommodated along the upper surface side of the bottom plate 10 when the attachment 1 is not used or the length of the long object M to be conveyed is relatively short. When the length is relatively long, the bottom plate 10 is projected from the tip. Thus, by making the extension member 11 project, the long object M can be stably supported. A drive mechanism 12 having a rack 12a and a pinion 12b is provided at the left and right ends of the extension member 11, and the extension member 11 is driven by operating the drive mechanism 12.

  The rear end of the long object M comes into contact with the back plate 20. By this contact, one end sides of the plurality of long objects M are aligned, and it becomes possible to stack the plurality of long objects M in the container C in an orderly manner (see FIG. 8 described later).

  The side plates 30 (30a, 30b) are provided to stand upward from the left and right ends of the bottom plate 10. The side plates 30 (30a, 30b) are in contact with the long objects M positioned at the left and right ends among the plurality of long objects M placed in parallel in the attachment 1. By this contact, the left and right long objects M and all the long objects M placed in parallel between them can be prevented from shaking to the left and right. For this reason, the problem that the long object M contacts the inner wall of the container C and this inner wall is damaged can be avoided.

  A plurality of receiving members 31 (31a, 31b) are provided on the side surfaces of the left and right side plates 30a, 30b facing each other. The receiving member 31 (31a, 31b) is formed with a recess corresponding to the shape of the end of the pressing member 40. In this embodiment, the side plate 30 is provided with two rows of receiving members 31 (31a, 31b) in the front-rear direction and four rows in the up-down direction, but the receiving members 31 (31a, 31b) are shown. ) Is merely an example, and can be appropriately changed in consideration of the size of the attachment 1, the shape of the side plate 30, the shape of the long object M to be handled, and the like.

  The pressing members 40 are provided on the receiving members 31a and 31b of the left and right side plates 30a and 30b facing each other so as to straddle the side plates 30a and 30b. As shown in FIG. 5, the pressing member 40 includes a receiving tube 41, an insertion tube 42 inserted into the receiving tube 41, and an urging member 43 that urges both the tubes 41 and 42 in directions opposite to each other. ing. The receiving tube 41 and the insertion tube 42 are pressed and contracted against the urging force of the urging member 43, and both ends of the pressing member 40 are fitted into the recesses of the side plates 30a and 30b, respectively, in the compressed state. The telescopic pressing member 40 shown in this embodiment is merely an example, and as long as the pressing member 40 can be attached to and detached from both side plates 30a and 30b, the configuration thereof can be changed as appropriate, and the above-described expansion and contraction can be performed. A method other than the equation can also be adopted.

  For example, in the configuration shown in FIG. 3, the pressing member 40 is provided on the lowermost receiving members 31 a and 31 b on the side close to the back plate 20. When the pressing member 40 is provided at this position, the long object having the thickness shown in FIG. 3 and the like can be stably held substantially horizontally while being in surface contact with the bottom plate 10. When the long object M is carried into the lowermost stage of the container C, the carry-in can be carried out smoothly by setting the pressing member 40 to this position.

  As shown in FIG. 6, the attachment 1 is attached to the forklift F and moves up and down as the fork of the forklift F moves up and down. FIGS. 7A to 7C show the operation of the attachment 1 when the long object M is stacked in a plurality of stages using the attachment 1 according to the present invention.

  In this way, when the long object M is further carried into the upper part of the already loaded long object M, for example, the pressing member 40 is moved from the lower side closer to the back plate 20 to the second-stage receiving member 31. (31a, 31b). When the pressing member 40 is provided at this position, the long object M is moved up and down by the tip end portion (actually the extension member 11) of the bottom plate 10 and the pressing member 40 in a state where the attachment 1 is slightly inclined rearward. And is stably held in a substantially horizontal state. In a state where the long object M is held in this manner, the long object M is horizontally loaded onto the already loaded long object M (see FIG. 5A).

  If the long object M is carried in to a predetermined position, the attachment 1 will be rotated from a back inclination state to a horizontal state. Along with this rotation, the contact between the long object M, the tip portion (extension member 11) of the bottom plate 10 and the pressing member 40 is eliminated (see FIG. 4B). When the attachment 1 is retracted in this state, the long object M is pulled out of the attachment 1 by the frictional force between the already loaded long object M and the newly loaded long object M (this figure ( c)). Although not shown in the drawing, the uppermost long object M projecting toward the carry-in port side is the end of the already loaded long object M by manual work or another attachment provided separately on the forklift F. It is pushed horizontally to align with the part. As shown in FIGS. 8A to 8C, the long object C is placed in order from the back side until the container C is full.

  FIG. 9 shows a second embodiment of the forklift attachment according to the present invention. The attachment 1 has the same basic configuration as the attachment 1 according to the first embodiment, but has a different mechanism for changing the position of the pressing member 40.

  That is, a pair of guide rails 32a, 32a, 32b, 32b extending in the vertical direction and the front-rear direction are provided on the outer wall side of the side plate 30, and the guide rails 32a, 32a, 32b, 32b are respectively provided in the vertical direction or the front-rear direction. Guide members 33a, 33a, 33b, and 33b that are freely guided are inserted. The guide members 33a and 33b guided in the up and down direction or the left and right direction are rotatably provided with rotation shafts 34a and 34b on which male threads are formed, respectively.

  One guide member 33a among the guide members 33a and 33a guided in the vertical direction, and one guide member 33b among the guide members 33b and 33b guided in the left and right directions have the rotation shafts 34a and 34b around the axis. A drive mechanism (not shown) is provided for rotation. A receiving member 31 is screwed into an intersecting portion of both the rotating shafts 34a and 34b. By independently driving both drive mechanisms, the receiving member 31 can be freely moved up and down and left and right within the axial range of the rotary shafts 34a and 34b. In this way, the position of the receiving member 31 can be continuously and freely moved, so that the loading height of the long object M (inclination angle of the attachment 1), the diameter of the long object M, etc., The position of the pressing member 40 can be changed smoothly, and the working efficiency can be greatly improved.

  FIG. 10 shows a third embodiment of the forklift attachment according to the present invention. The attachment 1 has the same basic configuration as the attachment 1 according to the first and second embodiments, but has a different mechanism for changing the position of the pressing member 40.

  That is, the back plate 20 of the attachment 1 is provided with a vertical rotation mechanism 22 that moves and rotates the support member 21 in the vertical direction. The vertical rotation mechanism 22 has a guide groove 22a extending in the vertical direction. Is formed. The guide groove 22a is fitted with a rotation shaft 21a formed at the end of the support member 21, and the rotation shaft 21a moves up and down in the guide groove 22a, thereby moving the support member 21 in the vertical direction. And it rotates around the rotation shaft 21a.

  The support member 21 is provided with a rocking member 23 having an L shape in side view. A pressing member 40 is provided at the tip of the swing member 23. Instead of such a configuration, a forklift fork provided with a rotating mechanism for changing the angle of the fork may be used instead of the support member 21 and the swing member 23 may be directly fixed to the fork. In this way, by rotating the support member 21 around the rotation shaft 21a while moving in the vertical direction, the loading height of the long object M (inclination angle of the attachment 1), the diameter of the long object M, and the like. In response to this, the position of the pressing member 40 can be changed smoothly, and the working efficiency can be greatly improved.

  Each above-mentioned embodiment is an example to the last, and as long as it can solve the subject of the present invention of carrying in long objects M, such as wood efficiently and safely, in a container, each member which constitutes attachment 1 The shape, arrangement, etc. can be changed as appropriate. For example, when the length of the long object M to be handled is relatively short, the extension member 11 may not be provided.

DESCRIPTION OF SYMBOLS 1 Attachment 10 Bottom plate 11 Extension member 12 Drive mechanism 12a Rack 12b Pinion 20 Back plate 21 Support member 21a Rotating shaft 22 Vertical rotation mechanism 22a Guide groove 23 Swing member 30 (30a, 30b) Side plate 31 (31a, 31b) ) Receiving members 32a and 32b Guide rails 33a and 33b Guide members 34a and 34b Rotating shaft 40 Holding member 41 Receiving tube 42 Inserting tube 43 Energizing member M Long object C Container F Forklift

Claims (3)

A bottom plate (10) on which a plurality of long objects (M) to be conveyed are placed in parallel;
A back plate (20) with which the rear end of the long object (M) abuts,
A side plate (30) provided upright from the left and right ends of the bottom plate (10);
A pressing member (40) provided across the left and right side plates (30, 30) on the side closer to the back plate (20) than the tip of the bottom plate (10);
The forklift attachment is configured such that the long object (M) is sandwiched from above and below by the front end of the bottom plate (10) and the pressing member (40) .   The attachment for a forklift according to claim 1, wherein the attachment position of the pressing member (40) to the side plate (30) can be changed within the plane of the side plate (30).   The attachment for forklifts of Claim 1 or 2 further provided with the extension member (11) provided so that it could protrude from the front-end | tip part of the said bottom face board (10).

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