JP2012030875A - Attachment of forklift - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an attachment of a forklift for stably conveying a pallet.SOLUTION: The attachment 10 includes: a loading member 11 into which the forks of the forklift can be inserted; two fixed sidewall members 13 and 14 which are erectly fixed opposite to each other; and two movable sidewall members 15 and 16 provided opposite to each other. The movable sidewall members 15 and 16 are arranged parallel to insertion ports 12 for inserting the forks of the forklift. The movable sidewall members 15 and 16 close a space between the fixed sidewall members 13 and 14 when the movable sidewall members 15 and 16 are in a closed state in which they are erectly fixed, and function as a conveying path to convey the pallet with respect to the loading member 11 when the members 15 and 16 are in an open state in which they turn outwardly form the closed state and fall sideways.

Description

  The present invention relates to an attachment attached to a fork of a forklift when an article is conveyed using the forklift.

  When carrying goods, a roll box pallet may be used. Furthermore, when the roll box pallet is transported or lifted to a high position, a forklift may be used. In this case, the fork is inserted between the wheels of the roll box pallet and transported. However, the roll box pallet cannot be stably held depending on the position of the inserted fork, so that it is difficult to transport in a stable state.

  Therefore, a roll box pallet provided with an insertion frame for inserting a fork of a forklift has been studied (for example, see Patent Document 1). The roll box pallet described in this document is attached to a rectangular base with a fall prevention frame for preventing the fall in the four directions of left and right and front and rear, an insertion frame for inserting a fork of a forklift from these four directions, and a caster. It has been.

Japanese Patent Laid-Open No. 6-1353 (FIG. 1)

  However, many roll box pallets are used for transporting luggage. When the roll box pallet described in the patent document is used, it is necessary to replace the roll box pallet currently used, resulting in a large economic burden. Therefore, there is a need to stably convey a roll box pallet having a known configuration. Moreover, when lifting a roll box pallet to a high position, it is desirable to be able to load and unload efficiently.

  The present invention has been made to solve the above-described problems, and provides a forklift attachment for stably transporting a pallet.

  In order to solve the above-mentioned problems, the invention described in claim 1 includes a rectangular mounting table provided with an insertion port into which a fork of a forklift is inserted, a first side facing the third mounting table, and a third side. A fork lift fork comprising: a pair of fixed side wall members standing upright on a side; and a pair of movable members provided on a second side and a fourth side perpendicular to the first side and the third side and facing each other on the mounting table. The attachment is attached to a position where the extending direction of the insertion port is parallel to the second side and the fourth side, and the movable member can be opened and closed between the fixed side wall members The gist is that it is provided.

  The gist of the invention according to claim 2 is the attachment of the forklift according to claim 1, wherein the movable member is provided with a plate member that can be arranged as a conveyance path with respect to the mounting table.

According to a third aspect of the present invention, in the attachment for a forklift according to the second aspect, the movable member is rotatably attached to the mounting table, and the movable member is fixed upright. The gist of the invention is to close the space between the fixed side wall members and open the space between the fixed side wall members so as to function as a conveyance path by lying down outward.

  The gist of a fourth aspect of the present invention is the attachment of the forklift according to the second or third aspect, wherein the movable member is provided with a reinforcing member that reinforces the conveyance path.

  According to a fifth aspect of the present invention, in the attachment for a forklift according to any one of the first to fourth aspects, the insertion port of the mounting table is provided on the first side and the third side. Is the gist.

  The gist of a sixth aspect of the present invention is that the forklift attachment according to any one of the first to fifth aspects is provided with a lock mechanism for maintaining the closed state of the movable member.

  According to a seventh aspect of the present invention, in the attachment for a forklift according to the sixth aspect of the present invention, a detection means for detecting the lowered state and the lifted state of the mounting table is further provided, and when the lifted state is detected, The gist is that the lock mechanism maintains the closed state of the movable member opened in the lowered state.

  According to an eighth aspect of the present invention, in the attachment for a forklift according to the seventh aspect, the detecting means detects the lifting state when a pressing force applied to the upper surface of the insertion port is applied. Is the gist.

(Function)
According to the present invention, a rectangular mounting table provided with an insertion port into which a fork of a forklift is inserted, a pair of fixed side wall members standing upright on the first side and the third side facing each other in the mounting table, An attachment that is attached to a fork of a forklift, and includes a pair of movable members provided on a second side and a fourth side that are orthogonal to the first side and the third side and face each other in the mounting table. Is provided at a position where the extending direction is parallel to the second side and the fourth side, and the movable member is provided to be openable and closable between the fixed side wall members. For this reason, when the space between the fixed side wall members is closed by the movable member, since the four directions of the mounting table are surrounded by the side wall members, even a pallet with wheels can be stably conveyed. .

  Furthermore, the movable member is provided at a position parallel to the insertion port of the mounting table. The attachment is disposed adjacent to the loading platform of the transportation vehicle such as a truck, and the movable member on the transportation vehicle side is disposed at a position where it can be opened on the loading platform. After transporting the pallet from the movable member on the opposite side of the transportation vehicle onto the mounting table, lift the attachment with the fork of the forklift to the position where the bottom surface of the loading platform of the transportation vehicle and the top surface of the mounting table are almost flush with each other. Let And a pallet is loaded in the loading platform of a transport vehicle via the movable member of a truck. In this way, when the pallet is loaded onto the truck, the attachment does not need to be changed in the forklift and can be used as an elevator.

  According to this invention, the said movable member is equipped with the board member which can be arrange | positioned as a conveyance path with respect to the mounting base mentioned above. By arranging the conveyance path, the loading and unloading on the attachment can be performed smoothly. Furthermore, when opening between fixed side wall members, a movable member can be used as a conveyance path.

According to the present invention, the movable member is rotatably attached to the mounting table, and the movable member is fixed upright to close the space between the fixed side wall members and laterally outward. By tilting, the space between the fixed side wall members is opened to function as a conveyance path. For this reason, a conveyance path can be simultaneously arrange | positioned by rotating a movable member and making it an open state.

  According to the present invention, the movable member is provided with the reinforcing member that reinforces the conveyance path. For this reason, since the strength of the conveyance path can be increased by the reinforcing member, the pallet can be smoothly guided onto the mounting table.

  According to the present invention, the insertion port of the mounting table is provided on the first side and the third side. For this reason, since the insertion port was provided in the both sides which oppose, the fork of a forklift can be inserted from both the 1st side and the 3rd side. Accordingly, it is possible to increase the degree of freedom of the location of the forklift with respect to the attachment.

According to the present invention, a lock mechanism for holding the movable member in a closed state is provided. For this reason, the closed state of the movable side wall member can be firmly held.
According to the present invention, there is further provided detection means for detecting the lowered state and the lifted state of the mounting table,
When the lifting state is detected, the lock mechanism holds the closed state of the movable member opened in the lowered state. For this reason, since the movable member opened when the pallet is placed automatically maintains the closed state in the lifted state of the mounting table, the movable member is not opened when it is unnecessary, and the pallet can be stably provided. Can be transported.

  According to the present invention, the detecting means detects the lifting state when a pressing force applied to the upper surface of the insertion port is applied. For this reason, the lifting state of the mounting table can be automatically detected by the press detection unit.

  According to the present invention, an object can be stably conveyed.

It is a figure explaining the structure of the attachment of 1st Embodiment, (a) is a top view, (b) is a front view, (c) is a left view of the principal part. The perspective view of the attachment of a 1st embodiment. The layout at the time of use of the attachment of a 1st embodiment. It is a perspective view explaining operation | movement of the attachment of 1st Embodiment, (a) is the state which is conveying the roll box pallet to an attachment, (b) is the state which raised the fork of the forklift, (c) is a roll The state which conveys a box pallet from an attachment to a truck is shown. It is explanatory drawing of the attachment of 2nd Embodiment, (a) is a perspective view, (b) is a principal part enlarged view of a locking mechanism, (c) is a block diagram explaining the electrical structure of a locking mechanism. It is a perspective view of the attachment in a modification, (a) is what constituted the movable member by handing a board, (b) pulled out and constituted the movable member. It is explanatory drawing of the lock mechanism in the example of a change, (a) is a principal part cross-sectional top view, (b) And (c) is an expansion perspective view of a principal part. It is explanatory drawing of the lock mechanism in the example of a change, (a) is a principal part cross-sectional top view, (b) is a principal part left view.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the attachment 10 shown in FIGS. 1 and 2 will be described. This attachment 1
0 is attached to the fork of the forklift.

As shown in FIGS. 1 and 2, the attachment 10 of this embodiment includes a mounting member 11 as a mounting table, fixed side wall members 13 and 14, and movable side wall members 15 and 16.
As shown in FIG. 1B, the mounting member 11 includes a rectangular upper surface plate 11a and four side plate portions adjacent to the first to fourth sides of the upper surface plate 11a. . Here, the opposing long sides of the top plate 11a correspond to the first and third sides, and the opposing short sides of the top plate 11a correspond to the second and fourth sides.

  Two insertion port forming members 11b are attached to the lower surface of the upper surface plate 11a of the mounting member 11 in parallel with the second side and the fourth side. The two insertion opening forming members 11b are arranged at intervals corresponding to the distance between the forks of the forklift. The insertion port forming member 11b has a cylindrical shape with a square cross section, and forms an insertion port 12 into which a fork is inserted. In order to allow the fork to be inserted from both of the attachments 10, the insertion port forming member 11b is formed through the mounting member 11 in the Y direction so that the insertion port 12 is exposed on both sides of the attachment 10. Has been. Moreover, it is comprised so that the bottom face of this insertion port formation member 11b and the bottom face of the side-plate part of the mounting member 11 may become flush | level.

  On the upper surface plate 11a, fixed side wall members 13 and 14 are fixed upright and opposed to the respective edges of the first side and the third side. The fixed side wall members 13 and 14 of the present embodiment have the same configuration, and are configured with a comb-shaped frame so that an object placed on the upper surface plate 11a does not fall. Mounting members 13a and 14a are fixed on the outer side of the frame where the movable side wall member 15 (16) of the fixed side wall members 13 and 14 contacts with the upper side of the position where the movable side wall member 15 (16) contacts. .

The end portions of the upper surface plate 11a facing the second side and the fourth side protrude from the side plate portion of the upper surface plate 11a. And the hinge part is each provided in the both ends which the upper surface board 11a protruded.
Via each hinge part, the movable side wall members 15 and 16 as a plate member are rotatably attached to the upper surface plate 11a. The movable side wall members 15 and 16 are configured so as to be able to maintain an upright closed state as shown by a solid line in FIG. In the present embodiment, the movable side wall members 15 and 16 are made wider than the distance between the fixed side wall members 13 and 14 by making the lateral width (length in the Y direction) of the movable side wall members 15 and 16 longer. It can be stood against and closed.

  In addition, as shown by a two-dot chain line in FIG. 1, when the movable side wall members 15 and 16 are opened sideways so that their tips are in contact with the ground, the roll box pallet is placed on the upper surface plate 11a. It becomes a conveyance path for taking down from 11a.

  Furthermore, handle portions 15a and 16a are provided on both sides of the movable side wall members 15 and 16, respectively. The handle portions 15a and 16a include gripping portions that protrude upward when the movable side wall members 15 and 16 are in an open state. And the movable side wall members 15 and 16 rotate from an open state to a closed state by pulling the grip portions of the handle portions 15a and 16a upward.

Further, the attachment 10 is provided with a latching member 17 (18) as a lock mechanism for restricting the opening of the movable side wall member 15 (16) and maintaining the closed state. Specifically, as shown in FIG. 1 (c), the retaining member 17 has an inverted L shape, and its end protrudes downward in a direction that regulates the movable side wall member 15 and then downwards. It is bent. The base end portion of the latch member 17 is rotatably attached to the attachment members 13a and 14a of the fixed side wall members 13 and 14. And when raising the movable side wall member 15, the front-end | tip part of the latch member 17 is shown in FIG.1 (c).
As shown by the two-dot chain line, it is temporarily rotated. When the movable side wall member 15 is leaned against the fixed side wall members 13 and 14, the retaining member 17 is returned to the position indicated by the solid line in FIG. Thereby, the movable side wall member 15 is located between the fixed side wall members 13 and 14 and the latching member 17 and restricts the opening of the closed state. The latch member 18 has the same configuration as the latch member 17 and functions as a lock mechanism that restricts the opening of the movable side wall member 16.

(how to use)
Next, the usage method of the attachment 10 comprised as mentioned above is demonstrated using FIG.3 and FIG.4. Here, it is assumed that the roll box pallet 50 (a pallet to which side plates and wheels are attached) is loaded on a truck bed. In the present embodiment, the roll box pallet 50 is conveyed onto the mounting member 11 from one movable side wall member (movable side wall member 15 in FIG. 3), and from the opposite movable side wall member (movable side wall member 16 in FIG. 3). It is loaded into the truck bed 45.

  In this case, first, the fork 41 of the forklift 40 is inserted into the insertion port 12 of the attachment 10. Then, with the attachment 10 attached to the tip of the fork 41, as shown in FIG. 3, the attachment 10 is moved to a position adjacent to the truck bed 45 and the movable side wall member 16 on the truck side can be opened on the truck bed. Let

  Next, the movable side wall member 16 on the track side is closed. In this case, the latching member 18 is rotated, and the movable sidewall member 16 is positioned between the fixed sidewall members 13 and 14 and the latching member 18 to maintain the closed state. Then, the movable side wall member 15 on the opposite side is rotated outward to be opened. Thereby, the movable side wall member 15 functions as a conveyance path. In the state shown in FIG. 4A, the roll box pallet 50 is conveyed onto the mounting member 11 through the movable side wall member 15.

  Next, the handle 15a of the movable side wall member 15 is gripped, the tip of the movable side wall member 15 is pushed up, and the movable side wall member 15 is rotated to be in a closed state as shown in FIG. In this case, the latching member 17 is rotated so that the movable sidewall member 15 is positioned between the fixed sidewall members 13 and 14 and the latching member 17 to maintain the closed state.

  In this state, the fork 41 of the forklift 40 is raised. Then, the raising of the fork 41 is stopped at a position where the bottom surface 45a of the truck bed 45 and the top surface of the mounting member 11 are substantially flush with each other.

  Next, as shown in FIG. 4C, the movable side wall member 16 is rotated outward (track side) to be opened. In this case, the movable side wall member 16 serves as a conveyance path that connects the attachment 10 and the loading platform 45. Then, the roll box pallet 50 is carried into the truck via the movable side wall member 16.

  Next, after the roll box pallet 50 is moved from the attachment 10 to the loading platform, the movable side wall member 16 is turned upright to be closed. Then, the fork 41 of the forklift 40 is lowered to the ground. When the next roll box pallet 50 is mounted on a truck, the movable side wall member 15 is opened, and the above-described processing is repeated.

According to this embodiment, the following effects can be obtained.
(1) In this embodiment, the attachment 10 includes the mounting member 11 into which the fork 41 of the forklift 40 can be inserted, the fixed side wall members 13 and 14 that are fixed upright facing each other, and the fixed side wall members 13 and 14. Movable side wall members 15 and 16 for opening and closing. For this reason, when the movable side wall members 15 and 16 are closed, the four directions of the upper surface plate 11a are surrounded by the side wall members, so that the roll box pallet 50 with wheels can be stably conveyed. Can do.

  Furthermore, the movable side wall members 15 and 16 are provided at positions parallel to the extending direction of the insertion port 12 of the mounting member 11. Then, the attachment 10 is placed adjacent to the truck bed 45 and the movable side wall member 16 on the truck side is disposed at a position where it can be opened on the truck bed. Since the roll box pallet 50 is provided with wheels, it can be easily transported to the vicinity of the attachment 10. And the roll box pallet 50 is conveyed on the mounting member 11 of the attachment 10 from the movable side wall member 15 on the opposite side to the track. Next, the fork 41 raises the attachment 10 to a position where the bottom surface 45a of the truck bed 45 and the top surface of the mounting member 11 are substantially flush, and the roll box pallet 50 is moved to the track-side movable side wall member 16. The truck is loaded on the loading platform 45 of the truck. For this reason, since the attachment 10 can be used as an elevator for loading the roll box pallet 50 onto the truck, the roll box pallet 50 can be efficiently loaded onto the truck.

  (2) In this embodiment, the movable side wall members 15 and 16 of the attachment 10 stand up and close between the fixed side wall members 13 and 14 when rotated inward. The movable side wall members 15 and 16 function as a conveyance path for the mounting member 11 in an open state where the movable side wall members 15 and 16 are laid down on the outside. For this reason, the loading / unloading of the roll box pallet 50 on the mounting member 11 can be smoothly performed via the movable side wall members 15 and 16. Moreover, the conveyance path can be arranged simultaneously by rotating the movable side wall members 15 and 16 into the open state.

  (3) In this embodiment, the mounting member 11 of the attachment 10 is provided with the insertion ports 12 exposed on both sides of the attachment 10. For this reason, the fork 41 can be inserted from both sides of the insertion port 12. Therefore, the freedom degree of the arrangement place of the forklift 40 with respect to the attachment 10 can be raised.

  (4) In this embodiment, the latching members 17 and 18 as a locking mechanism for respectively holding the closed state of the movable side wall members 15 and 16 are provided. For this reason, the closed state of the movable side wall members 15 and 16 can be firmly held.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIGS. The attachment 20 of the present embodiment includes a mechanism that automatically operates the locking mechanism of the attachment 10 of the first embodiment. In the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 5A, the attachment 20 of the present embodiment is provided with a lock mechanism for holding the movable side wall members 15 and 16 in a closed state. The locking mechanism of the movable side wall member 15 is provided on each of the fixed side wall members 13 and 14, and the latching members 25 a and 25 b for restricting the rotation of the movable side wall member 15 to the outside, and the latching members 25 a and 25 b. It is comprised from the drive parts 23a and 24a which operate | move. Similarly, the locking mechanism for the movable side wall member 16 is provided in each of the fixed side wall members 13 and 14, and the latching members 26 a and 26 b for restricting the rotation of the movable side wall member 16 to the outside, and these hooks. It is comprised from the drive parts 23b and 24b which act | operate the stop members 26a and 26b. Note that the latch members 25a and 25b (26a and 26b) of each lock mechanism are configured to rotate to thereby restrict the opening of the movable side wall member 15 (as shown in FIG. 5B). I am doing.

  Then, the driving members 23a and 24a (23b and 24b) of the fixed side wall members 13 and 14 are driven in the closed state of the movable side wall member 15 (16), whereby the latching members 25a and 25b (26a and 26b) are rotated. The opening of the movable side wall member 15 (16) is restricted and the closed state is maintained. When releasing the movable side wall member 15 (16), the drive portions 23a and 24a (23b and 24b) are driven again, and the latching members 25a and 25b (26a and 26b) are rotated in the opposite direction.

  Further, the fixed side wall member 13 is provided with open / closed state detection sensors 35a, 36a for detecting the closed state of the movable side wall members 15, 16. The open / closed state detection sensor 35 a detects the open / closed state of the movable side wall member 15. The open / close state detection sensor 36 a detects the open / close state of the movable side wall member 16. Specifically, the open / closed state detection sensors 35a and 36a supply signals to the control unit 32 described later when the distal ends of the movable side wall members 15 and 16 are in contact with the fixed side wall member 13 and are in the closed state.

  In addition, a pressure switch 31 as a detection unit is provided inside the upper surface of the insertion port forming member 11 b of the mounting member 11. The pressure switch 31 detects the lowered state and the lifted state of the mounting member 11. The pressure switch 31 is turned on to supply a signal to the control unit 32 when pressure is applied to the upper surface of the insertion port forming member 11b when the fork of the forklift is raised. When no pressure is applied to the upper surface, the pressure switch 31 is turned off.

Next, the control part 32 mounted in the attachment 20 of this embodiment is demonstrated based on FIG.5 (c).
The control unit 32 is supplied with output signals from the pressure switch 31 and the open / closed state detection sensors 35a and 36a. The control unit 32 controls the lock mechanism actuating means 35b and 36b that perform drive control on the drive unit of the lock mechanism described above. Here, the lock mechanism actuating means 35b drives the drive portions 23a and 24a in order to maintain the closed state of the movable side wall member 15. The lock mechanism actuating means 36b drives the drive units 23b and 24b in order to maintain the closed state of the movable side wall member 16.

The control unit 32 functions as a loading-side storage unit 321, a loading-side closing detection unit 322, and a loading-side lock control unit 323.
The carry-in storage means 321 stores the movable side wall member (load-in side) that is opened when the roll box pallet 50 is carried into the attachment 20. Specifically, the carry-in side storage unit 321 detects carry-in side specifying data for specifying the open movable side wall members (15, 16) when the open state of the movable side wall member is detected in a state where the pressure switch 31 is off. Remember.

The carry-in side closing detection unit 322 detects the closing of the movable side wall member stored in the carry-in side storage unit 321.
When the pressure switch 31 is turned on after the carry-in side closing detection unit 322 detects the closing, the carry-in side lock control unit 323 detects the closing via the lock mechanism actuating unit of the movable side wall member on the carry-in side. The closed state of the movable side wall member is maintained. Furthermore, when the pressure switch 31 is turned off, the carry-in side lock control means 323 unlocks the movable side wall member.

(how to use)
Next, the usage method of the attachment 20 of this embodiment is demonstrated with reference to FIG.3 and FIG.4.

4A, when the attachment 20 is placed on the ground, the fork 41 of the forklift 40 is not pressed against the upper surface of the insertion port forming member 11b, so that the pressure switch 31 is turned off. It has become.

  Then, the movable side wall member 16 on the track side is kept closed, and the movable side wall member 15 is opened. In this case, since the pressure switch 31 is OFF, the carry-in side storage unit 321 of the control unit 32 stores the movable side wall member 15 as the carry-in side movable side wall member.

  Next, when the roll box pallet 50 has been carried onto the upper surface plate 11a, the movable side wall member 15 is erected and closed as shown in FIG. In this case, the carry-in side closing detection unit 322 of the control unit 32 detects that the movable side wall member 15 specified as the carry-in side movable side wall member is closed by supplying a signal from the open / close state detection sensor 35a.

  When the fork 41 of the forklift 40 is raised in this state, pressure is applied to the upper surface of the insertion port forming member 11b, so that the pressure switch 31 is turned on. In this case, the carry-in side lock control unit 323 of the control unit 32 operates the lock mechanism operation unit 35b in order to maintain the movable side wall member 15 in the closed state. The lock mechanism actuating means 35b drives the drive portions 23a and 24a of the lock mechanism of the movable side wall member 15 to rotate the latch members 25a and 25b, thereby maintaining the closed state of the movable side wall member 15.

Then, the lift of the fork of the forklift is stopped at a position where the bottom surface 45a of the truck bed 45 and the top surface of the mounting member 11 are substantially flush with each other.
Next, as shown in FIG. 4C, the movable side wall member 16 on the side opposite to the movable side wall member 15 is rotated and opened, and the roll box pallet 50 is carried into the truck.

  Then, the opened movable side wall member 16 is turned to a closed state. In this case, since the pressure switch 31 is turned on, the carry-in side specific data stored in the carry-in storage means 321 is held as it is.

  Then, the attachment 20 is lowered to the ground. In this case, since the fork 41 of the forklift 40 does not press the upper surface of the insertion port forming member 11b, the pressure switch 31 is turned off. In this case, the carry-in side lock control means 323 of the control unit 32 releases the lock on the carry-in side movable side wall member. Specifically, the carry-in side lock control means 323 that has received the off-state signal from the pressure switch 31 drives the drive units 23a and 24a to rotate the movable side wall member 15 in the unlocking direction.

Then, in order to load another roll box pallet 50 onto the truck, the movable side wall member 15 is opened again, and the above-described processing is repeated.
According to this embodiment, in addition to the effects (1) to (4), the following effects can be obtained.

  (5) In the present embodiment, the control unit 32 that controls the lock mechanism actuating means 35b, 36b that actuates the lock mechanism includes the open / closed state detection sensors 35a, 36a that detect the open / closed state of the movable side wall members 15, 16. A signal and a signal from the pressure switch 31 for detecting the lifting state of the mounting member 11 are supplied. The control unit 32 stores the movable side wall member 15 opened in the lowered state as the movable side wall member on the carry-in side, and detects that the movable side wall member 15 is closed, and then the pressure switch 31 is turned on. For this, the lock mechanism is operated. For this reason, the movable side wall member (15) opened when the roll box pallet 50 is transported automatically maintains the closed state in the lifted state of the mounting member 11, so that the movable side wall member can be used when unnecessary. The roll box pallet 50 can be stably conveyed without opening (15).

  (6) In the present embodiment, the pressure switch 31 for detecting the lifting state of the mounting member 11 is provided on the inner surface of the insertion port forming member 11 b of the mounting member 11. The pressure switch 31 is turned on when pressure is applied to the upper surface of the insertion port forming member 11 b when the fork 41 of the forklift 40 is raised, and supplies a signal to the control unit 32. For this reason, the lifting state of the mounting member 11 can be automatically detected by the pressure switch 31.

Moreover, you may change the said embodiment as follows.
In each of the above embodiments, the movable side wall members 15 and 16 are provided as the movable member of the attachment 10. If the pair of movable members provided on the second side and the fourth side that are orthogonal to the fixed side wall member and are opposed to each other on the mounting member 11 can be in a closed state or an open state, the configuration of the movable member is the above-described movable side wall member 15. , 16 is not limited. For example, the movable member may have a double door structure or a bellows door structure. Further, the movable member may be composed of a rope member or a rod member, and these may be hung on the fixed side wall members 13 and 14. Furthermore, as shown to Fig.6 (a), you may comprise a movable member by the plate members 55 and 56 spanned over the fixed side wall members 13 and 14, and the latch member 47 holding this. Specifically, a latching member 47 having a shape (for example, L shape) for holding the movable member is fixed to the fixed side wall members 13 and 14. Then, the plate members 55 and 56 are stretched over the latch member 47 to close the space between the fixed side wall members 13 and 14. In this case, when the space between the fixed side wall members 13 and 14 is opened, the spanned plate members 55 and 56 are removed from the latch member 47. Then, it may be used as a transport path by standing on the mounting member 11. Thereby, a movable member can be used as a conveyance path.

  Further, as shown in FIG. 6 (b), a plurality of metal plates may be connected to form a bowl-shaped movable side wall member 65, 66 that can move up and down. When the movable side wall members 65 and 66 are in the open state, the movable side wall members 65 and 66 are accommodated in a storage portion formed on the mounting member 11 of the attachment 60, and are pulled up from the storage portion to hook the distal end portions on the fixed side wall members 13 and 14. May be closed.

  In each of the above embodiments, the movable side wall members 15 and 16 are configured by plate members. In addition, a reinforcing member that reinforces the movable side wall members 15 and 16 when used as a conveyance path may be attached to the outside of the movable side wall members 15 and 16. In this case, for example, the reinforcing member is configured in a shape that supports the load in the central portions of the movable side wall members 15 and 16 when installed on the ground. Since the strength of the conveyance path can be increased by this reinforcing member, the deflection of the conveyance path can be reduced and the roll box pallet can be smoothly guided onto the mounting member 11.

  In each of the above embodiments, the fixed side wall members 13 and 14 of the attachment 10 are configured with a comb-shaped frame. The configuration of the fixed side wall members 13 and 14 is not limited to this as long as an object placed on the upper surface plate 11a of the placement member 11 does not fall. For example, you may comprise with a plate member.

-Although the attachment 10 of each said embodiment was used in order to convey the roll box pallet 50, a conveyance target object is not limited to this.
-In each above-mentioned embodiment, the upper surface of mounting member 11 of attachment 10 was constituted with upper surface board 11a. Instead of this, a groove parallel to the first side and the third side may be provided on the upper surface of the mounting member 11, and a configuration for guiding the wheels of the roll box pallet 50 by the groove may be added.

In each of the above embodiments, a lock mechanism for restricting the opening of the movable side wall members 15 and 16 is provided. These locking mechanisms are not limited to the configuration described above. For example, the movable side wall members 15 and 16 may be sandwiched from the side. In this case, the member which pinches | interposes a movable side wall member is attached to a fixed side wall member, and the structure which maintains the state which pinches | interposes a movable side wall member is provided. For example, as shown in FIG. 7, the inner sleeve 77 and the outer sleeve 78 attached to the fixed side wall members 13 and 14 may be rotated. 7A is a view of the movable side wall member 15 as viewed from above, and FIGS. 7B and 7C are enlarged perspective views of main portions of the inner sleeve 77 and the outer sleeve 78 constituting the lock mechanism. It is. As shown in FIG. 7C, the inner sleeve 77 is fixed to each frame of the fixed side wall members 13 and 14 that are in contact with the movable side wall member 15. The outer sleeve 78 is fitted to the inner sleeve 77. Further, the outer sleeve 78 is formed with a latching portion 78a protruding in the radially outward direction. As shown in FIG. 7A, the latching portion 78a has a shape that sandwiches the movable side wall member 15 so as to restrict the opening of the movable side wall member 15 that stands.

  Further, a mechanism for restricting the rotation of the inner sleeve 77 in a state where the movable side wall member 15 is sandwiched is provided. Specifically, as shown in FIG. 7B, a longitudinal groove 77 h is formed on the outer periphery of the inner sleeve 77. Further, a positioning projection 78b that can be fitted into the vertical groove 77h is formed on the inner periphery of the outer sleeve 78. As shown in FIG. 7C, when the positioning projection 78b is fitted in the vertical groove 77h, the latching portion 78a of the outer sleeve 78 is provided at the position shown by the solid line in FIG. It has been. Further, as shown in FIG. 7B, the outer sleeve 78 freely rotates when it is removed from the inner sleeve 77 by moving upward. As a result, the lock mechanism that restricts the opening of the movable side wall member by the vertical movement and rotation of the outer sleeve 78 can be easily operated.

  Further, a lock mechanism for restricting the opening of the movable side wall member may be provided on the movable side wall member. For example, you may provide a latching part which pinches | interposes the flame | frame of a fixed side wall member in a movable side wall member. Then, when the movable side wall member is erected, the latching portion of the movable side wall member is fixed to the frame of the fixed side wall member.

  Further, the lock mechanism for restricting the opening of the movable side wall member may be other than a mechanism for sandwiching the movable side wall member or the fixed side wall member. For example, as shown in FIG. 8, a projecting portion may be provided at the center of the fixed side wall member, and a hole forming portion in which a hole fitted to the projecting portion is formed may be provided on the movable side wall member. Fig.8 (a) is the figure which looked at the movable side wall member 85 from the upper surface, and FIG.8 (b) is the principal part of the left view of an attachment. As shown in FIG. 8A, the lateral width of the movable side wall member 85 is set to a size that can pass between the fixed side wall members 13 and 14. As shown in FIG. 8 (b), the fixed side wall members 83, 84 with which the movable side wall member 85 comes into contact are arranged in the vicinity of the front end portion of the movable side wall member 85 to restrict the opening of the movable side wall member 85. A part of the locking mechanism is provided. Specifically, as shown in FIG. 8 (a), through-holes parallel to the second side and the fourth side are provided in the frames of the fixed side wall members 83 and 84, and the cylindrical shape is slidable in the through-holes. The locking member 87 is inserted. On the other hand, a hole forming portion 85 a having a fitting hole is fixed to the edge of the movable side wall member 85 at a position corresponding to the locking member 87. Then, when the movable side wall member 85 is in the fixed side wall member closed state, the movable side wall member 85 is raised and the locking member 87 is inserted into the fitting hole of the hole forming portion 85 a of the movable side wall member 85. Thereby, the movable side wall member 85 is restricted from rotating in the opening direction and maintains the closed state. Therefore, the lock mechanism can be provided with a relatively simple configuration.

In the second embodiment, when the control unit 32 detects the lifting state of the mounting member 11 after the movable side wall member specified as the movable side wall member on the loading side is closed, the lock device is activated. The closed state of the movable side wall member was maintained. The lock mechanism that holds the closed state of the movable side wall member specified as the carry-in side movable side wall member when the lifting state of the mounting member 11 is detected is not limited to the electrical mechanism described above, but other mechanisms. For example, a mechanical mechanism may be used. For example, a detection member of a lever mechanism that raises one end when a fork of a forklift presses the upper surface of the insertion port forming member 11b is provided. The detection member is connected to each latching member which locks each movable side wall member via a link mechanism. Each link mechanism connected to each latching member from the detection member is configured to be in a link effective mode in which a pressure applied to the detection member is transmitted to each latching member and a link cutting mode in which no pressure is transmitted. When the movable side wall member on which the roll box pallet is mounted on the ground is determined, the link mechanism of the latch member connected to the movable side wall member is set to the link effective mode, and the opposite side (track side) is movable. The link mechanism of the side wall member is set to the link invalid mode. In this case, when the attachment is lifted by the fork of the forklift, the link mechanism restricts the opening of the movable side wall member on the conveyance side by the hook member on the link effective mode side. Thereby, the lock mechanism can be operated as the fork of the forklift is raised.

  DESCRIPTION OF SYMBOLS 10,20,60 ... Attachment, 11 ... Mounting member, 11a ... Top plate, 11b ... Insertion port formation member, 12 ... Insertion port, 13, 14, 83, 84 ... Fixed side wall member, 15, 16, 65 , 66 ... movable side wall member as a movable member, 15a and 16a ... handle part, 31 ... pressure switch, 32 ... control part, 35a and 36a ... open / close state detection sensor, 35b and 36b ... lock mechanism operating means, 40 ... forklift, DESCRIPTION OF SYMBOLS 41 ... Fork, 50 ... Roll box pallet, 55, 56 ... Plate member, 321 ... Carry-in side memory | storage means, 322 ... Carry-in side closing detection means, 323 ... Carry-in side lock control means.

Claims (8)

A rectangular mounting table provided with an insertion port into which a fork of a forklift is inserted;
A pair of fixed side wall members that stand upright on the first side and the third side facing each other in the mounting table;
An attachment attached to a fork of a forklift, comprising a pair of movable members provided on a second side and a fourth side that are orthogonal to the first side and the third side and face each other in the mounting table,
The extending direction of the insertion port is provided at a position parallel to the second side and the fourth side,
The attachment of a forklift, wherein the movable member is provided so as to be openable and closable between the fixed side wall members.   The forklift attachment according to claim 1, wherein the movable member includes a plate member that can be disposed as a conveyance path for the mounting table. The movable member is rotatably attached to the mounting table,
The movable member is fixed upright to close the space between the fixed side wall members, and by lying down on the outside, the space between the fixed side wall members is opened to function as a conveyance path. Attachment of a forklift according to 2.   The attachment of a forklift according to claim 2 or 3, wherein the movable member is provided with a reinforcing member that reinforces the conveyance path.   The forklift attachment according to any one of claims 1 to 4, wherein the insertion port of the mounting table is provided on the first side and the third side.   The forklift attachment according to any one of claims 1 to 5, further comprising a lock mechanism for maintaining the closed state of the movable member. Further provided is a detecting means for detecting the lowered state and the lifted state of the mounting table,
The attachment of a forklift according to claim 6, wherein when the lifted state is detected, the lock mechanism holds the closed state of the movable member opened in the lowered state.   The attachment of a forklift according to claim 7, wherein the detecting means detects the lifting state when a pressing force applied to the upper surface of the insertion port is applied.

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