JP2009299353A - Shutter device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shutter device easily installable at the entrance of an existing lifting and conveying mechanism. <P>SOLUTION: This shutter device includes left and right lifting guides 40, 40 vertically installed on both sides of an opening portion; a shutter member 5 formed by connecting a plurality of horizontal frame members 50 both ends of which are slidably supported on the respective lifting guides 40 are connected to each other in such a manner as to approach and separate from each other; stoppers 8, 8 for supporting only the horizontal frame member 50A at the uppermost position which abuts thereon in the suspended state when the shutter member 5 is moved from the upper side downward; operating pieces 9, 9 for moving all the horizontal frame members 50C of the shutter member 5 in order by abutting on the horizontal frame member 50C at the lowest position when the shutter member is moved from the lower side upward; and a drive mechanism 7 for moving the operating pieces 9, 9 at the same speed in the vertical directions while aligning the heights thereof. The drive mechanism 7 reciprocates the operating pieces 9 between a predetermined height position above the stoppers 8 and a predetermined height position under the shutter member 5 supported on the stopper 8 in the suspended state. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a shutter device that lifts and lowers a shutter member to open and close a load, a person's doorway, a window, a load passage, and the like, and in particular, the present invention relates to each floor of an elevating conveyance mechanism that conveys a load up and down. The present invention relates to a shutter device suitable for being installed at the doorway of a cargo.

  Conventionally, as a logistics facility such as a warehouse or a factory, as shown in FIG. 16, an elevator transport mechanism 100 that transports a load to each floor F <b> 1 to F <b> 3 by a lift 102 that lifts and lowers the inside of the tower body 101, and each floor of the tower body 100. Some of them are configured with a loading / unloading mechanism 103 installed at each of the entrances and exits 104 of F1 to F3.

  The lifting platform 102 is used to convey a pallet loaded with a load to the loading / unloading mechanism 103 and an empty pallet unloaded to the loading / unloading mechanism 103. The conveyor is provided in two upper and lower stages, and the loading / unloading mechanism 103 includes a pallet loaded with the upper and lower conveyors of the lifting platform 102 and an empty pallet without loaded. Is provided in two upper and lower stages (see, for example, the column “Prior Art” in Patent Document 1).

Japanese Patent No. 3582827

  The loading / unloading mechanism 103 of each floor F1 to F3 is configured so that the pallet loaded with the elevator 102 and the empty pallet without loading are smoothly loaded / unloaded. It arrange | positions in the state which approached the entrance / exit 104 of each floor F1-F3. The doorway 104 of each floor F1-F3 is not provided with a door like an elevator because it communicates with the cargo loading / unloading mechanism 103 described above, and remains open.

  In the lifting / lowering transport mechanism 100 having the above-described configuration, the entrances and exits 104 of the floors F1 to F3 of the tower body 101 are open. Therefore, when the lifting platform 102 is on another floor, it is placed on the conveyor of the load / unload mechanism 103. There is a possibility that the load moves toward the entrance / exit 104 and is sent into the tower body 101 due to excessive momentum or a malfunction of the load / unload mechanism 103. In addition, during work or inspection, an operator on the conveyor of the loading / unloading mechanism 103 may slip his / her foot and fall from the entrance / exit 104 into the tower body 101.

  Therefore, it is conceivable to install doors at the entrances 104 of the floors F1 to F3 of the tower body 101 as in an elevator, but the equipment becomes large and the cost is high. It is difficult to install a door.

  The present invention has been made paying attention to the above-mentioned problems. The entrance of each floor of the elevating and transporting mechanism for transporting the load up and down the floor, the entrance of the building, the opening part of the window, and the load pass through. It is an object of the present invention to provide a shutter device that can be easily installed even in a passage portion or the like that is already installed.

  A shutter device according to the present invention opens and closes an opening portion or a passage portion by moving a shutter member up and down, and includes left and right raising and lowering guides vertically arranged to face each other with the opening portion or the passage portion interposed therebetween, A shutter member in which a plurality of horizontal frame members whose both ends are slidably supported by the elevating guide are connected to the upper and lower horizontal frame members so as to be able to approach and separate from each other, and a predetermined height position of the left and right elevating guides When the shutter member moves from top to bottom, the uppermost horizontal frame member hits but the other horizontal frame member does not hit but passes through the stopper so that the shutter member hangs down, and the left and right lifts It can move in the vertical direction along the guide, and when moving from bottom to top, it hits the horizontal frame material at the lowest position of the shutter member and moves all the horizontal frame materials in sequence. That the operating piece, align the respective working pieces of height of the left and right and a drive mechanism for moving at the same speed vertical in each direction. The drive mechanism reciprocates each operation piece between a predetermined height position above the stopper and a predetermined height position below a shutter member supported in a state of hanging from the stopper. Like that.

  The shutter device according to the present invention is preferably installed at the entrance of each floor of the lifting and lowering transport mechanism that transports the load up and down, but is not limited to this, and has an opening such as a building entrance and window, a load, etc. It can also be installed in a passage portion that passes through.

In the shutter device according to the present invention, the horizontal frame member at the uppermost position of the shutter member is supported by the left and right stoppers. When the left and right working pieces release the lowermost horizontal frame member and are positioned below it, the shutter member hangs down and closes the opening part and the passage part, and the opening part and the passage part are formed in a plane lattice shape. It is blocked by the shutter member.
When the left and right operating pieces move upward along the lifting guide by driving the drive mechanism, each operating piece first strikes the horizontal frame member at the lowest position of the shutter member, and moves upward together with the horizontal frame member. Let Next, the lowermost horizontal frame member approaches and approaches the upper horizontal frame member and moves upward together with the horizontal frame member. Similarly, all the horizontal frame members are integrally moved upward along with the operation pieces from the bottom. When the lower horizontal frame material hits the horizontal frame material at the uppermost position, all the horizontal frame materials are in contact with the upper and lower horizontal frame materials, and the shutter member is in a reduced state. The shutter member continues to move upward in a reduced form, so that it is retracted from the opening portion and the passage portion, and the opening portion and the passage portion are opened. The shutter member is positioned at the upper position of the elevating guide in a reduced form and stands by.

  Next, when the drive mechanism is driven in the opposite direction, the left and right working pieces move downward along the lifting guide while supporting the lowermost horizontal frame member, and all the horizontal frame members are Along with the left and right operating pieces, they move together downward. All the horizontal frame materials except the uppermost horizontal frame material pass through the position of the stopper without hitting the left and right stoppers, but the uppermost horizontal frame material hits the left and right stoppers and is supported, and is localized at that position. . Next, the lower horizontal frame member connected to the horizontal frame member at the uppermost position stops and hangs down. Similarly, all the remaining horizontal frame members are sequentially stopped from the top. When the horizontal frame member at the lowest position is released from the operating piece and stopped, all the horizontal frame members are in the form of a plane lattice, and the opening portion and the passage portion are blocked by the shutter member.

In the above-described configuration of the present invention, each horizontal frame member constituting the shutter member is made of a metal or synthetic resin pipe material or bar material, but if it does not easily deform or break, It may be like a shape.
Each of the horizontal frame members is connected to the upper and lower horizontal frame members so as to be able to approach and separate from each other. Such connection can be realized by connecting the upper and lower horizontal frame members with a flexible wire.

  In a preferred embodiment of the present invention, the drive mechanism is composed of a chain provided along each of the left and right lifting guides and a motor that travels a portion along the lifting guide of the chain in the same direction at the same speed. Thus, the left and right operating pieces are respectively attached to the same height position of the part along each lifting guide of the chain.

  The above-mentioned chain may be endless, or may be provided individually along the left and right lifting guides. When the chain is stretched endlessly, it is composed of one motor, but when the chain is stretched individually along the left and right lifting guides, it is composed of two motors.

In the above-described embodiment, when the shutter member is supported in a suspended state by the stopper, each horizontal frame member constituting the shutter member is not restrained at all, so that the shutter member is pushed upward by a manual operation to be opened. It is possible.
In another preferred embodiment of the present invention, in order to prevent the shutter member from being lifted upward and released, the uppermost lateral frame member of the shutter member supported in a state of being suspended by the stopper is restrained at that position. For further holding a holding mechanism.
According to this embodiment, since the lowermost horizontal frame member is restrained at that position by the holding mechanism, all the horizontal frame members constituting the shutter member are restrained, and the shutter member is moved upward by manual operation. Can not be released by pushing up.

According to the present invention, for example, at the entrance / exit of each floor of the lifting / lowering transport mechanism for transporting the load up and down the floor, the entrance / exit of a building, an opening part such as a window, a passage part through which the load on the conveyor passes, etc. Even if it is an existing one, the shutter device can be easily installed.
Further, when the shutter member is retracted from the opening portion or the passage portion, the horizontal frame member constituting the shutter member is in a contracted and reduced state, so that there is no space for standby or storage. Furthermore, the interval between the horizontal frame members can be changed according to the application and purpose, and the design can be easily changed.

FIG. 1 shows the configuration of a load lifting and lowering conveying apparatus in which a shutter device 4 according to the present invention is introduced.
The load elevating / conveying device of the illustrated example includes an elevating / conveying mechanism 1 that elevates the elevating platform 11 between the ground floor F1 and the second floor F2 along the tower body 10 and conveys the load L in the vertical direction, and each floor F1, It consists of cargo loading / unloading mechanisms 2 and 2 which are installed on the floor surface of F2 so as to face the entrances G1 and G2 of the lifting and lowering transport mechanism 1.

  The lifting platform 11 has a conveyor 12 for conveying the pallet 3 loaded with the load L with the loading / unloading mechanism 2 and a conveyor for conveying the empty pallet 3 on which no load is loaded. (Not shown) are provided in two upper and lower stages. Each pallet 3 has flanges 30 and 30 bent outward at both ends of a horizontal plate surface on which a load is loaded.

  The loading / unloading mechanism 2 on each floor includes left and right chain conveyors 21 and 21 for loading and unloading a pallet 3 loaded with loads L to and from a conveying conveyor 12 on the upper stage of the elevator 11, Left and right chain conveyors 22 and 22 for carrying empty pallets for carrying the pallet 3 in and out of the lower conveyor of the elevator 11. The left and right chain conveyors 21 and 21 for transporting cargo and the left and right chain conveyors 22 and 22 for transporting empty pallets move forward and backward from both sides with respect to the opposed positions in front of the elevator 11. In FIG. 1, a mechanism for moving the chain conveyors 21 and 22 back and forth is omitted.

  In FIG. 1, reference numeral 20 denotes a pallet unloading mechanism having a pair of left and right support claws 23, 23 that engage and disengage at the front and rear flange positions 30, 30 of the pallet 3. Each support claw 23 moves up and down while supporting the left and right flanges 30 and 30 of the pallet 3 on which the load L is loaded or the empty pallet 3 at opposite positions in front of the elevator 11. Each pallet 3 is unloaded from the chain conveyors 21 and 22.

At the entrances G1 and G2 of the floors F1 and F2 of the lifting and lowering transport mechanism 1, shutter devices 4 which are one embodiment of the present invention are respectively installed.
As shown in FIGS. 2 to 4, each shutter device 4 opens and closes the entrances G <b> 1 and G <b> 2 by raising and lowering the shutter member 5 composed of a plurality of horizontal frame members 50 along the raising and lowering guides 40 and 40 on both left and right sides. To do. The raising and lowering operation of the shutter member 5 is performed by moving the operating pieces 9 and 9 arranged on the left and right in the vertical direction. Each actuating piece 9, 9 is made of a metal plate or the like, and is attached to the same height position of a portion along each elevating guide 40, 40 of the chain 70 constituting the drive mechanism 7. When the chain 70 is caused to travel, the left and right operating pieces 9, 9 move along the lift guides 40, 40 in the upper or lower direction at the same speed.
2 shows a state in which the shutter member 5 closes the entrance (hereinafter referred to as “shutter closed state”), and FIG. 3 shows a state in which the shutter member 5 has moved upward to open the entrance ( Hereinafter, “shutter open state”) is shown.

As shown in FIGS. 4 and 5, each lifting guide 40 is formed by forming a guide groove 43 having a uniform width over the entire length between a pair of vertical guide plates 41, 42. The upper end is fixed to the upper frame 44, and the lower end is fixed to the lower frame 45. The upper frame 44 and the lower frame 45 are formed by bending a metal plate into a U shape, and the inner side is open.
Each lifting guide 40 is provided vertically so that the guide grooves 43 and 43 face each other over the entire length with the opening portions of the entrances G1 and G2 interposed therebetween.

  The shutter member 5 is constituted by a plurality of horizontal frame members 50 arranged at substantially equal intervals in the vertical direction. Each horizontal frame member 50 is supported so as to be freely slidable and pivotable while both ends thereof are kept in parallel with each other in the state of being prevented from coming off in the guide groove 43 of each lifting guide 40. As shown in FIG. 6, each horizontal frame member 50 is formed by attaching end members 52, 52 to both ends of a stainless steel pipe 51, and the upper and lower horizontal frame members 50, 50 approach or separate from each other. In other words, all the horizontal frame members 50 are connected to the end members 52 and 52 at both ends of the upper and lower horizontal frame members 50 by the flexible wire 6. In this embodiment, all of the horizontal frame members 50 are connected by one connecting wire 6 on each of the left and right, but not limited to this, the upper and lower horizontal frame members 50 and 50 are connected by individual wires. You can also.

  As long as each wire 6 has flexibility and appropriate strength, various materials such as a wire and a string formed by twisting a strand of metal or synthetic fiber can be used. In this embodiment, as shown in FIG. 7 (1), the horizontal frame members 50 are positioned and fixed at equal positions of one wire rod 6, and the wire rod 6 extends straight “shutter closed”. When in the “state”, all the horizontal frame members 50 are arranged in a regular lattice at a regular lattice. When the actuating piece 9 moves the horizontal frame member 50 upward from the bottom along the lifting guide 40, the wire 6 is alternately opposite between the horizontal frame members 50 and 50, as shown in FIG. The horizontal frame members 50 and 50 come close to each other. Eventually, the space between all the horizontal frame members 50 is reduced, and the entire shutter member 5 is reduced (see FIG. 7 (3)).

In the “shutter closed state” shown in FIG. 2, the upper and lower horizontal frame members 50 are separated from each other by a predetermined interval. The uppermost horizontal frame member 50 is supported by stoppers 8, 8 provided at predetermined height positions of the left and right lifting guides 40, so that the entire shutter member 5 is in the form of a plane lattice. . In the “shutter open state” shown in FIG. 3 and the “shutter half open state” shown by the alternate long and short dash line in FIG. 3, the space between the upper and lower horizontal frame members 50 and 50 is reduced, and the entire state is reduced. ing.
In the following description, when the uppermost horizontal frame member 50 is distinguished from other horizontal frame members among all the horizontal frame members 50, the reference numeral “50A” is used, and the lowermost horizontal frame member 50 is used. Is distinguished from other horizontal frame members by using the reference numeral “50C”, and the horizontal frame member 50 at the other intermediate position is distinguished from the horizontal frame members 50A and 50C at the uppermost position and the lowermost position. Uses the code “50B”.

  As shown in FIG. 5, the stopper 8 has a pair of cylindrical protrusions 80 arranged on the inner surfaces of the guide plates 41, 42 constituting each lifting guide 40 with the same height and a predetermined distance d. , 81 are fixed by a method such as welding. The distance d between the protrusions 80 and 81 is set so that the end member 52 of the uppermost horizontal frame member 50A cannot pass and the other horizontal frame members 50B and 50C can pass. Accordingly, the uppermost horizontal frame member 50 </ b> A does not move below the stopper 8, and is always positioned above the stopper 8. The other horizontal frame members 50B and 50C are positioned above the stopper 8 in the “shutter open state” and positioned below in the “shutter closed state”. The projecting bodies 80 and 81 constituting the stopper 8 are not necessarily cylindrical.

8 to 10 show the configuration of the end member 52 of the horizontal frame member 50. 9 (1) to (3) show the end member 52 of the uppermost horizontal frame member 50A, and FIGS. 10 (1) to (3) show the end member 52 of the lowermost horizontal frame member 50C. 1) to (3) respectively show the end member 52 of the horizontal frame member 50B at the remaining intermediate position.
The end member 52 of the horizontal frame member 50B at the intermediate position shown in FIG. 8 is coupled to the end of the round shaft portion 53 inserted into the guide groove 43 of the elevating guide 40 via a flange portion 56 projecting annularly to the outer periphery. The part 54 is formed integrally with the connecting shaft part 55 at the other end (see the front view of FIG. 8B). Since the diameter of the round shaft portion 53 is set to a value smaller than the groove width of the guide groove 43 of the lifting guide 40, the round shaft portion 53 is slidable and freely rotatable along the guide groove 43. The length of the round shaft portion 53 substantially coincides with the thickness of each guide plate 41, 42. The diameters of the flange portion 56 and the connecting shaft portion 55 are larger than the groove width of the guide groove 43, whereby the round shaft portion 53 is supported by the guide groove 43 so as not to be detached.
The diameter RB of the flange portion 56 is such that the outer peripheral surface of the flange portion 56 does not abut against the projecting bodies 80, 80 of the stopper 8 and the movement of the end member 52 of the horizontal frame member 50B is prevented. The value is smaller than the distance d between the projecting bodies 80, 80 (see the right side view of FIG. 8 (3)).

The coupling shaft portion 54 is fitted into the inner hole of the stainless steel pipe 51, and a cross-shaped split groove 54 a is formed in the coupling shaft portion 54 in order to tightly fit the coupling shaft portion 54 and the pipe 51. is there. The pipe 51 may be a metal pipe other than stainless steel, or a synthetic resin pipe. Furthermore, the pipe 51 does not necessarily have to be hollow over the entire length, and a core material for reinforcement may be inserted inside in order to increase the strength.
The connecting shaft portion 55 is a round shaft. The connecting shaft portion 55 has a through hole 55a through which the connecting wire 6 is inserted in the direction along the diameter, and a screw hole 55b that opens to the end surface communicating with the through hole 55a. (See the left side view of FIG. 8A and FIG. 8B). The connecting wire 6 is stopped and fixed by inserting the wire 6 into the through hole 55a and screwing the screw 55c into the screw hole 55b.

The end member 52 of the horizontal frame member 50A at the uppermost position shown in FIG. 9 has a round shaft part 53, a coupling shaft part 54, and a connecting shaft part 55 having the same configuration as the end member 52 of the horizontal frame member 50B at the intermediate position described above. (See the front view of FIG. 9 (2) and the left side view of FIG. 9 (1)).
The diameter RA of the flange portion 56 is larger than the diameter RB of the flange portion 56 of the horizontal frame member 50B at the intermediate position. Further, the outer peripheral surface of the flange portion 56 abuts against the projecting bodies 80, 80 of the stopper 8 and The value is larger than the distance d between the protrusions 80, 80 of the stopper 8 so that the end member 52 is prevented from moving downward (see the right side view of FIG. 9 (3)).

  The end member 52 of the horizontal frame member 50C has a round shaft portion 53, a flange portion 56, and a coupling shaft portion 54 having the same configuration as the end member 52 of the horizontal frame member 50B at the intermediate position at the lowest position shown in FIG. (Refer to the front view of FIG. 10 (1) and the plan view of FIG. 9 (3)). The flange portion 56 has the same diameter as the flange portion 56 of the end member 52 of the horizontal frame member 50B at the intermediate position, and the outer peripheral surface of the flange portion 56 abuts against the projecting bodies 80, 80 of the stopper 8 to The distance is smaller than the distance d between the protrusions 80 and 80 of the stopper 8 so that the movement of the end member 52 is not prevented.

  The connecting shaft portion 55 includes a flange portion 57 having a diameter larger than that of the round shaft portion 53 at one end of the shaft-like portion 58 and a guide portion 59 at the other end, and the lower end portion of the connecting wire 6 on the shaft-like portion 58. A stop ring 49 for stopping and fixing the ring is fitted freely. The retaining ring 49 is formed with a through hole 49a through which the lower end of the wire 6 is inserted, and a screw hole 49b that communicates with the through hole 49a and opens at the end face. The wire 6 is passed through the through hole 49a, and the screw 49c is screwed into the screw hole 49b from the end surface, whereby the wire 6 is fixed (see the left side view of FIG. 10 (2)).

  The guide portion 59 has a notch 59a whose tip surface is notched in a U-shape (see FIG. 10 (3)). The notch 59a is slidably passed through the chain 70 of the drive mechanism 7. The opening of the notch 59a is closed by a screw 59c screwed to the screw hole 59b. The notch 59a is sized and shaped to allow the chain 70 to pass but not the operating piece 9 attached to the chain 70. After the operating piece 9 hits the guide portion 59, the notch 59a The frame member 50 </ b> C moves together with the operating piece 9.

FIG. 11 shows the configuration of the drive mechanism 7 and the mounting positions of the left and right operating pieces 9 and 9.
The drive mechanism 7 in the illustrated example is for moving the left and right operating pieces 9 and 9 in the same direction at the same speed along the left and right lifting guides 40 and 40 in the vertical direction. One endless chain 70 stretched by a plurality of wheels 72 to 77 along the lifting guide 40, and a motor 71 that moves the chain 70 in the vertical direction along the left and right lifting guides 40, 40. It consists of

  Each of the wheels 72 to 77 meshes with the chain 70, and the chain 70 is caused to travel by the drive wheel 72 attached to the drive shaft of the motor 71. The other wheels 73 to 77 are driven wheels. The drive wheel 72 and the driven wheel 74 are provided in the upper frame 44 of the one lifting guide 40, and the driven wheel 73 is provided in the lower frame 45. Of the remaining driven wheels 75 to 77, the driven wheels 75 and 77 are provided in the upper frame 44 of the other lift guide 40, and the driven wheel 76 is provided in the lower frame 45.

The chain 70 is directed downward from the driving wheel 72 at the upper end of one lifting guide 40, folded upward by the driven wheel 73 at the lower position, and returned to the driven wheel 74 at the upper position, and from the driven wheel 74 to the other lifting guide 40. It goes downward through the driven wheel 75 at the upper position, and turns back upward at the driven wheel 76 at the lower position to return to the other driven wheel 77 at the upper position, and makes a round by reaching from the driven wheel 77 to the drive wheel 72.
One end of the endless chain 70 from the driven wheel 73 at the lower position to the driven wheel 74 at the upper position, and the other one at the part from the driven wheel 76 at the lower position to the driven wheel 77 at the upper position. The operating pieces 9 are attached with the same height, and the parts to which the operating pieces 9 are attached travel in the up and down directions so that the operating pieces 9 and 9 follow the lifting guide 40 at the same speed in the same direction. Move.

  When the operating pieces 9 are in the “shutter closed state”, the operating pieces 9 are positioned below the horizontal frame member 50 </ b> C at the lowest position of the shutter member 5 and stand by. FIG. 11 shows the positions of the operating pieces 9 and 9 when the shutter is in the closed state. When the chain 70 starts running from this standby state, the operating pieces 9 and 9 are immediately moved to the lowest position. The horizontal frame member 50C is brought into contact with both end portions of the horizontal frame member 50C, and then the other horizontal frame members 50B and 50A are integrally moved upward along with the horizontal frame member 50C. When the operating piece 9 reaches a predetermined height position above the position of the stopper 8, the “shutter is in an open state”, the chain 70 stops traveling, and the operating pieces 9, 9 stop and enter a standby state.

FIG. 2 shows the position of each operation piece 9 in the “shutter closed state”, and FIG. 3 shows the position of each operation piece 9 in the “shutter open state”. In order to reciprocate the working piece 9 between the upper and lower positions, a sensor S1 for detecting that the working piece 9 has reached the lower standby position shown in FIG. 2 (FIG. 11), and FIG. A sensor S2 for detecting that the upper standby position has been reached is provided along the travel path of the chain 70 between the upper driven wheel 75 and the lower driven wheel 76.
In this embodiment, limit switches are used as the sensors S1 and S2, and a metal for operating each limit switch at an appropriate position of the chain 70 traveling between the driven wheel 75 at the upper position and the driven wheel 76 at the lower position. An operation member 78 such as a plate is attached.

  In the above embodiment, the two operating pieces 9 are driven by the single motor 71 using the endless chain 70. However, the present invention is not limited to this. It can also be driven by a separate motor. Further, a wire can be used instead of the chain 70, and a photoelectric sensor can be used instead of the limit switch for the sensors S1 and S2.

  According to the configuration of the above-described embodiment, in the “shutter closed state”, the horizontal frame members 50 constituting the shutter member 5 are in a suspended state, and are held upward with the horizontal frame member 50C at the lowest position. Although it can be pushed open, as shown in FIGS. 2 and 3, if holding mechanisms 95, 95 are provided for restraining the lowermost horizontal frame member 50 </ b> C at that position, the shutter member 5. The opening operation by manual operation can be prevented. Various types of holding mechanisms 95 of this type are conceivable. For example, electromagnetic solenoids are attached to the lower positions of the left and right lifting guides 40, 40, respectively, and the rod is moved horizontally to the lowest position by controlling the energization of the electromagnetic solenoids. The frame material 50C and the horizontal frame material 50B above the frame material 50C are configured to move in and out.

Next, the operation of the shutter device 4 will be described.
In the cargo lifting / lowering conveying apparatus shown in FIG. 1, the lifting platform 11 of the lifting / lowering conveying mechanism 1 is lowered to the ground floor F1, and the shutter device 4 on the ground floor F1 is in the “shutter open state”. Since the entrance / exit G1 is opened, the loading / unloading work of the load L and the pallet 3 is performed between the lifting platform 12 and the loading / unloading mechanism 2. On the other hand, the shutter device 4 on the second floor F2 is in the “shutter open state”, the entrance G2 is closed, and loading / unloading of the load is prohibited.

  Before the elevator 12 is lowered to the ground floor F1, the shutter device 4 on the ground floor F1 is in the “shutter closed state” in FIG. The end member 52 is supported by the left and right stoppers 8 and 8, and the left and right operating pieces 9 and 9 are waiting at a fixed position below the lowermost horizontal frame member 50C. At this time, the shutter member 5 closes the opening portion of the entrance / exit G1 in a state where the shutter member 5 hangs down, and the entrance / exit G1 is closed by the shutter member 5 having a plane lattice shape.

  When the lifting platform 12 descends to the ground floor F1 and loads are loaded and unloaded, the motor 71 of the drive mechanism 7 is driven and the chain 70 travels upward. It moves upward along the lifting guides 40, 40. Immediately after the movement starts, each operating piece 9 hits the end member 52 of the lowermost horizontal frame member 50C, and moves upward together with the horizontal frame member 50C. Next, the horizontal frame member 50C at the lowest position approaches the horizontal frame member 50B at the intermediate portion above it, and moves upward together with the horizontal frame member 50B. Similarly, the horizontal frame members 50B of all intermediate portions are integrally moved upward in order from the bottom, and when the horizontal frame member 50B below the uppermost horizontal frame member 50A hits, The frame member 50 is in a “shutter half-open state” (a state indicated by a one-dot chain line in FIG. 3) in contact with the upper and lower horizontal frame members 50. The shutter member 5 continues to move upward in this reduced form, thereby retracting from the opening portion of the entrance / exit G1, thereby opening the entrance / exit G1. In the “shutter open state” of FIG. 3, the shutter member 5 is retracted to a position above the elevating guides 40 and 40 while waiting in a reduced form.

When the loading / unloading operation of the load is completed on the ground floor F1, the motor 71 of the drive mechanism 7 is driven in the opposite direction to the above, the chain 70 travels downward, and the left and right operating pieces 9, 9 are the left and right lifting guides. It moves downward along 40,40. The left and right actuating pieces 9 and 9 move downward along the lifting guides 40 and 40 while supporting the end members 52 at both ends of the lowermost horizontal frame member 50C, and all the remaining horizontal frame members 50 are also moved. Along with the left and right actuating pieces 9, 9, they move integrally downward. All the horizontal frame members 50 except for the left and right operating pieces 9 and 9 and the uppermost horizontal frame member 50A pass through the position of the stopper 8 without hitting the left and right stoppers 8 and 8, but the uppermost horizontal frame member. In 50A, the end members 52, 52 at both ends abut against the left and right stoppers 8, 8 and are supported, and are localized at the positions.
Next, the immediately lower horizontal frame member 50B connected to the uppermost horizontal frame member 50A stops descending and then hangs down. Similarly, all the remaining horizontal frame members 50 stop descending sequentially from the top. It will hang down. When the operation piece 9 releases the lowermost horizontal frame member 50C and then stops descending, all the horizontal frame members 50 hang down and form a surface lattice shape, and the opening portion of the entrance / exit G1 has a surface lattice-shaped shutter. It is blocked by the member 5.

  The shutter device 4 according to the present invention is installed in place of the doors of the entrances G1 and G2 of each floor of the lifting and lowering transport mechanism 1 as in the above-described embodiment, causing troubles in the load transporting work and accidents of falling of workers. However, it can be applied to various other purposes and applications.

  FIG. 12 shows a specific example in which the shutter device 4 according to the present invention is used as a gate of a physical distribution system, and the shutter device 4 is arranged so as to straddle the conveyor C in the middle of the conveyor C constituting the conveyance path of the load L. is set up. When the shutter device 4 is in the “shutter closed state” shown in the drawing, the conveyance of the load L is stopped and the standby state is set. When in the “shutter open state”, the load L is allowed to be conveyed.

  FIG. 13 shows a specific example in which the shutter device 4 according to the present invention is used as a surface lattice of the window W, and the shutter device 4 is installed in an opening portion of the window W. The shutter device 4 includes the holding mechanism 95, and holds the shutter device 4 in a “shutter closed state” for crime prevention during normal times. In an emergency such as the occurrence of a fire, the shutter device 4 is set to the “shutter open state” to allow people to enter and exit from the window W.

  FIG. 14 shows a specific example in which the shutter device 4 according to the present invention is used as a security shutter for an entrance / exit D such as an entrance, a self-explanatory, or an emergency exit, and the shutter device 4 is installed at an opening portion of the entrance / exit D. The shutter device 4 includes the holding mechanism 95, and keeps the shutter device 4 in a “shutter closed state” for crime prevention at night. In the daytime, the shutter device 4 is set in the “shutter open state” to allow people to enter and exit from the entrance D.

  FIG. 15 shows a specific example in which the shutter device 4 according to the present invention is used as the gate of the garage R, and the shutter device 4 is installed at the entrance of the garage R. The shutter device 4 includes the holding mechanism 95 as necessary, and holds the shutter device 4 in a “shutter closed state” after warehousing. At the time of entering / exiting, the shutter device 4 is set to the “shutter open state”.

It is a perspective view which shows the structure of the load raising / lowering conveyance apparatus with which the shutter apparatus of this invention was introduced. It is a front view which shows the closed state of the shutter apparatus by this invention. FIG. 3 is a front view showing an opened state of the shutter device of FIG. 2. FIG. 3 is a plan view of the shutter device of FIG. 2. FIG. 3 is a cross-sectional view in which an intermediate portion along line AA in FIG. 2 is omitted. It is a front view of the shutter member which abbreviate | omitted the intermediate part. It is explanatory drawing which shows the state which the wire rod for connection bends with the movement of the horizontal frame material which comprises a shutter member. It is the left view, front view, and right view which show the structure of the end member of the horizontal frame material of an intermediate position. It is the left view, front view, and right view which show the structure of the end member of the horizontal frame material of the uppermost position. It is the front view which shows the structure of the end member of the horizontal frame material of the lowest position, a left view, and a top view. It is explanatory drawing which shows the structure of a drive mechanism, and the attachment position of an operating piece. It is a perspective view which shows the other example of application of this invention. It is a perspective view which shows the other example of application of this invention. It is a perspective view which shows the other example of application of this invention. It is a perspective view which shows the other example of application of this invention. It is explanatory drawing which shows the structural example of distribution equipment.

Explanation of symbols

4 Shutter device 5 Shutter member 6 Wire material 7 Drive mechanism 8 Stopper 9 Actuating piece 40 Elevating guide 50 Horizontal frame material 50A Uppermost horizontal frame material 50C Lowermost horizontal frame material 70 Chain 71 Motor

Claims (4)

A shutter device that opens and closes an opening portion or a passage portion by moving a shutter member up and down,
Left and right lifting guides that are vertically arranged to face each other across the opening or passage portion, and a plurality of horizontal frame members whose both ends are slidably supported by each lifting guide approach the upper and lower horizontal frame materials. , A shutter member that is connected so as to be separable, and the horizontal frame member at the uppermost position abuts when the shutter member moves from top to bottom, provided at a predetermined height position of the left and right lifting guides, but the other horizontal frame members A stopper that supports the shutter member in a suspended state by passing without striking, and can move up and down along the left and right lifting guides, and when moving from the bottom to the top, It has an operating piece that moves all the horizontal frame materials in order by striking the frame material, and a drive mechanism that moves the left and right operating pieces at the same speed in the vertical direction with the same height.
The drive mechanism reciprocates each operating piece between a predetermined height position above the stopper and a predetermined height position below a shutter member supported in a state of hanging from the stopper. A shutter device.   2. The shutter device according to claim 1, wherein each horizontal frame member constituting the shutter member is connected to upper and lower horizontal frame members by a flexible wire.   The drive mechanism is composed of a chain provided along the right and left lifting guides and a motor that travels the portions along the lifting guides of the chain at the same speed in the same direction. The shutter device according to claim 1, wherein left and right operation pieces are respectively attached to the same height position.   The shutter device according to any one of claims 1 to 3, further comprising a holding mechanism for restraining a horizontal frame member at a lowermost position of the shutter member supported by the stopper in a suspended state at the position. In addition, a shutter device.

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