JPH04112121A - Entrance conveyor device for warehouse - Google Patents

Abstract

PURPOSE:To erect/prostrate relay conveyors with conveyed baggages and simplify a device by providing baggage conveyors on both sides at the front and rear of the entrance of a warehouse with shutters, and providing the erectable/ prostratable relay conveyors at the front end section of rear conveyor frames. CONSTITUTION:Shutters 1A, 1B are liftably provided at the entrance of a warehouse, and conveyors 4A, 4B, 4C conveying baggages 3 are arranged in series toward the front from the rear on both sides at the front and rear across the shutters 1A, 1B in the conveyance direction of the baggages 3. Relay conveyors 6 are erectably/prostratably provided on flames 5 of the rear conveyors 4A, 4B among the conveyors 4, the relay conveyors 6 can be connected to the front and rear conveyors 4 when they are prostrated, and they are excited in the erected state by vertical walls. When the shutters 1A, 1B are opened and the baggages 3 are conveyed from the rear conveyors 4, the relay conveyors 6 are prostrated by the baggages 3, and they are connected to the front conveyor 4 and carried in the warehouse, and the relay conveyors 6 are erected when the baggages 3 are separated from the conveyors 6.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a conveying device installed at a shuttered exit or entrance of a frozen warehouse or other closed storage warehouse for freezing food.

[Conventional technology]

Conventionally, as a conveyance device for an entrance/exit of a warehouse with a shuttered entrance/exit, two conveyors are arranged in series across the entrance/exit, and one of the two conveyors moves forward and backward toward the other conveyor. Provided to be movable forward and backward by a moving drive device, a guide device is provided between the one conveyor and the floor, the other conveyor is fixed to the floor, and when loading and unloading goods by the conveyor through the entrance and exit, A conveying device is configured to move the shutter to a release position, then move one of the conveyors toward the other conveyor by the forward/backward moving drive device, and then operate each conveyor to carry in and take out the cargo. Are known.

[Problem to be solved by the invention]

In the case of the conventional conveyance device at the entrance/exit of a warehouse, the entire heavy conveyor is moved along a guide device by a forward/backward movement drive device, so a high-output forward/backward movement drive device is required. Since a guide device is required for guiding, the transport device becomes large and heavy, and the manufacturing cost of the transport device increases.

SUMMARY OF THE INVENTION The object of the present invention is to provide a warehouse entrance/exit conveyance device which can advantageously solve the above-mentioned problems.

[Means to solve the problem]

In order to achieve the above object, in the warehouse entrance/exit conveyance device of the present invention, conveyors 4 for conveying cargo 3 from the rear to the front are installed on both sides of the entrance/exit 2 having the shutter 1 in the warehouse. At the front end of the frame 5 of the rear conveyor 4, the proximal end portion of the support frame 7 of the relay conveyor 6 is rotated to the relay conveyor down position and the relay conveyor upright position by a horizontal shaft 8 extending in the left-right direction. A biasing means for raising and rotating the relay conveyor is locked to the support frame 7.

〔Example〕 Next, the present invention will be explained in detail using illustrated examples.

The drawing shows an embodiment of the present invention, in which doorway opening/closing shutters 1 are provided at a first doorway 2A and a second doorway 2B in a refrigerated warehouse, and which are moved vertically or horizontally. Conveyors 4 each consisting of a chain conveyor for conveying the baggage 3 from the rear to the front are arranged in series on both the front and rear sides of the second entrance 2B in the baggage conveyance direction, and the frame 5 of each conveyor 4 is placed on a concrete floor 9. or rests on its floor 9 and on a concrete support 10.

Each conveyor 4 has a drive device 1 consisting of an electric motor with a reduction gear.
The driving device 11 includes a pair of left and right driving sprockets 12 rotated by the conveyor 4 , a pair of left and right driven sprockets 13 , and an endless conveying chain 14 wound around the driving sprocket 12 and the driven sprocket 13 . A drive shaft 15 fixed to the frame 5 and to which the pair of drive sprockets 12 is fixed is arranged so as to extend in the left-right direction at the rear of the frame 5, and is supported by a bearing 16 fixed to the frame 5. A transmission chain 19 is wound around a drive sprocket 17 fixed to the output shaft of the drive device 11 and a driven sprocket 18 fixed to the drive shaft 15, and the horizontal shaft 8 to which the pair of driven sprockets 13 is fixed is , are arranged so as to extend in the left-right direction at the front part of the frame 5, and are supported by a bearing 20 fixed to the frame 5.

A chain guide member 21 that guides the straight portion of the endless conveyance chain 14 is fixed to the frame 5,
In addition, the pallet guide members 22 disposed on the upper left and right sides of the conveyor 4 are connected to the support arms 2 with respect to the frame 5.
A pallet detection photoelectric switch consisting of a light emitter 24 and a light receiver 25 is provided on both left and right sides of the front part of the conveyor 4, and when a pallet 26 is detected by the photoelectric switch, the pallet 26 is In response to a signal from the photoelectric switch, the operation of the drive device 11 is stopped, the pallet 26 is stopped, and the shutter 1 is opened.

Furthermore, when the pallet 26 passes through the shutter 1, the shutter 1 is closed.

The base end portions on both the left and right sides of the support frame 7 are rotatably fitted to the horizontal shaft 8 via bearings 27, and the base end portions on both the left and right sides of the support frame 7 are fitted in the intermediate portions of the side plates 28 on both the left and right sides of the support frame 7 in the longitudinal direction of the side plates. An elongated hole 29 extending from the side plate 28 is provided, and an engaging member 31 fixed to the holding member 30 is fitted into the elongated hole 29, and a driven sprocket 32 is attached to the holding member 3o, which is fixed to the side plate 28. A chain tensioning bolt 34 screwed into the female threaded member 33 is engaged with the engaging member 31, a lock nut 35 is screwed onto the bolt 34, and the chain tensioning bolt 34 is inserted into the elongated hole 36 of the side plate 28. The fixing layer bolt 37 is screwed into the holding member 3°, and the holding member 30 is fixed to the side plate 28 by the bolt 37.

A driving sprocket 38 is fixed on both left and right sides of the horizontal shaft 8 at a position facing the driven sprocket 32, and an endless chain 39 for relay conveyance is wound around the driving sprocket 38 and the driven sprocket 32. The chain guide member 40 that guides the straight portion of the
relayed by a driven sprocket 32 fixed to and supported by the support frame 7, a driving sprocket 38 fixed to the horizontal shaft 8, and an endless chain 39 wrapped around the driving sprocket 38 and the driven sprocket 32. A conveyor 6 is configured.

A nut 42 having a threaded hole penetrating in the front and back direction is fixed to the lower front end of the frame 5 of the rear conveyor 4 among the conveyors 4 adjacent in the front and back direction, via a support fitting 43, and the relay conveyor is attached to the nut 42. A stopper bolt 44 for stopping is screwed together, and the stopper bolt 4
4 is screwed with a lock nut 45. A nut 46 having a threaded hole penetrating in the vertical direction is fixed to the lower rear end of the frame 5 of the front conveyor 4 among the conveyors 4 adjacent in the front-rear direction, via a support metal fitting 47, and a nut 46 is relayed to the nut 46. Stopper bolt 4 for stopping conveyor collapse
8 are screwed together, and a lock nut 49 is screwed into the stopper bolt 48.

A weight 50 is fixed to the base end of the support frame 7 of the relay conveyor 6 with bolts, thereby forming a biasing means for raising and rotating the relay conveyor, and a pallet 26 loaded with the cargo 3 is placed on the relay conveyor 6. If not, the weight of the weight 50 causes the relay conveyor 6 to stand up and rotate around the horizontal shaft 8, and the base end of the support frame 7 is pressed against the stopper bolt 44, as shown by the solid line in FIG. The relay conveyor 6 stops at the standing position where it hits.

Further, as shown in FIG. 8, when the pallet 26 loaded with cargo 3 is transported forward by the rear conveyor 4, the pallet 26 carries the endless chain 3 of the relay conveyor 6.
9 is pressed forward, the relay conveyor 6 is rotated to be laid down, and the relay conveyor 6 is stopped at the laid down position where the tip of the support frame 7 of the relay conveyor 6 abuts against the stopper bolt 48.

When the pallet 26 loaded with the cargo 3, that is, the transported object 51, is transported forward by each conveyor 4 and each relay conveyor 6 through the first entrance/exit 2A and the second entrance/exit 2B, the transported object 51 is at the rearmost part. That is, by being placed on the first conveyor 4A and operating the conveyor 4A, the conveyed object 51 is conveyed forward toward the first entrance/exit 2A, and the shutter IA of the first entrance/exit 2A is opened. be done.

Object 51 to be transported forward by the first conveyor 4A
However, when the relay conveyor 6A hits the relay conveyance endless chain 39 in the relay conveyor 6A located at the front of the conveyor 4A, the forward conveyed object 51 causes the relay conveyor 6A to fall down and rotate to a horizontal position, and then the relay conveyor 6A
As a result, the conveyed object 51 is forwardly conveyed to the second conveyor 4B through the first entrance/exit 2A, and then the relay conveyor 6A is automatically rotated upright.

Next, the loaded pallet 51 is transported forward by the second conveyor 4B, and after the transported object 51 passes through the shutter IA, the shutter IA is closed, and then the shutter IA of the second entrance 2B is opened. Subsequently, similarly to the case described above, the relay conveyor 6B located in front of the second conveyor 4B is rotated to fall down by the conveyed object 51, and then the conveyed object 51 is moved to the second entrance/exit 2B by the relay conveyor 6B. The relay conveyor 6B then automatically stands up and rotates.

Next, the conveyor 4C transports the conveyed object 51 forward, and after the conveyed object 51 passes through the shutter IB,
Its shutter IB is closed.

In the embodiment described above, chain conveyors are used as the conveyor 4 and relay conveyor 6, but belt conveyors may be used instead. Further, as a biasing means for rotating the relay conveyor 6 to the upright position, a helical spring is adopted, and the helical spring is fitted to the horizontal shaft 8, and one end and the other end of the helical spring are fitted. The support frame 7 and the frame 5 may be engaged with each other.

〔Effect of the invention〕

Since this invention is configured as described above, it produces the effects described below.

When the conveyor 4 at the rear conveys the conveyed object 51 forward, the conveyed object 51 collides with the relay conveyor 6, and then the relay conveyor 6 is automatically rotated to the laid down position by the conveyed object 51. , since the conveyed object 51 is forwardly conveyed to the front conveyor 4 by the relay conveyor 6,
It is not necessary to provide a drive device that moves the entire one conveyor forward and backward toward the other conveyor, unlike the conveyance device at the entrance/exit of the conventional warehouse, and the entire one conveyor can be moved forward and backward toward the other conveyor. There is no need to install a drive device, and there is no need to install a conveyor guide device between one conveyor and the floor. Therefore, the conveyor device can be made small, lightweight, and at low cost, and the conveyor can be moved forward and backward. The relay conveyor 6 can be automatically rotated to the laid-down relay position and the raised and retreated position by simple means without the need to start and stop the driving device.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a partial vertical side view of a conveyance device at an entrance in a warehouse, and FIG.
The figure is a partial cross-sectional plan view, Figure 3 is a cross-sectional plan view showing an enlarged portion of Figure 2, Figure 4 is a vertical cross-sectional front view of the conveyor, and Figure 5 is the relay conveyor and its mounting section. FIG. 6 is a partially cutaway front view showing an enlarged view of the vicinity of the driven sprocket mounting part in FIG. FIG. 8 is a side view showing a state in which the relay conveyor is laid down. In the figure, 1 is the shutter, 2 is the doorway, 3 is the luggage, and 4
is a conveyor, 5 is a frame, 6 is a relay conveyor, 7 is a support frame, 8 is a horizontal axis, 9 is a concrete floor, 10 is a concrete support stand, 11 is a drive device, 12 is a drive sprocket, 13 is a driven sprocket, 14 is an endless chain for conveyance, 15 is a drive shaft, 21 is a chain guide member, 22
is a pallet guide member, 26 is a pallet, 28 is a side plate,
32 is a driven sprocket, 34 is a chain tensioning bolt, 38 is a driving sprocket, 39 is an endless chain for relay conveyance, 40 is a chain guide member, 44 is a stopper bolt for stopping the relay conveyor from standing up, 48 is a stopper bolt for stopping the relay conveyor from falling down. , 50 is a weight for standing and rotating the relay conveyor.

Claims (1)

[Claims] Conveyors 4 for conveying cargo 3 from the rear to the front are installed on both sides of the entrance 2 having a shutter 1 in a warehouse, and a support frame 7 of the relay conveyor 6 is installed at the front end of the frame 5 of the rear conveyor 4. The proximal end portion of is attached so as to be rotatable between the relay conveyor lying down position and the relay conveyor upright position by a horizontal shaft 8 extending in the left-right direction, and the support frame 7 is provided with biasing means for turning the relay conveyor upright. A transportation device at the entrance/exit of a locked warehouse.