JPH053476Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to an unloading device for unloading loads from the loading platform of a truck, etc., and in particular, the present invention relates to an unloading device for unloading loads from the loading platform of a truck, etc. The present invention relates to an unloading device suitable for unloading loads such that a gap is formed between rows of the loads.

[Conventional technology]

As an unloading device for unloading a load from a loading platform of a truck or the like, those described in Japanese Patent Publication No. 48-18783 and Japanese Patent Publication No. 52-14509 are known.

To explain the prior art disclosed in the above-mentioned gazette, Japanese Patent Publication No. 18783/1983 discloses that a vertical carriage, a transverse carriage, an elevating platform, a rotating platform, a dolly guide rail, and a conveyor are stacked in a stacked manner from bottom to top. A loading and unloading device is disclosed.

In addition, Japanese Patent Publication No. 14509/1984 describes a guide member for leveling the front end of the unloading conveyor to make the rear end of a roller deck installed on the loading platform of a truck or the like and the front end of the unloading conveyor the same height. In the department,
A leveling roller that comes into contact with the guide member is provided at the rear end of the truck, etc., and two rows of rollers are used to send loads away from adjacent rows, and loads that tend to separate are aligned on the outer surface between the rows. An unloading device is disclosed in which two rows of roller groups are arranged to create a gap between the two rows of rollers.

[Problem that the invention attempts to solve]

However, the above conventional technology had the following problems.

That is, the unloading device disclosed in Japanese Patent Publication No. 48-18783 is designed to move the unloading conveyor vertically and horizontally, up and down, and turn to align it with the truck, etc. In order to unload cargo, an unloading conveyor with the same length as the loading platform of the truck or the like is required, and it is not possible to downsize the unloading device. However, if the unloading conveyor is short, it is necessary to repeatedly align a truck or the like with the fixed conveyor while unloading.

Also, since no gaps can be formed between the rows of loads,
It was necessary to install a separate load separation device.

Furthermore, the unloading device disclosed in Japanese Patent Publication No. 52-14509 is designed to match the level of the loading platform of a truck or the like with the unloading conveyor, so it can be applied to a specific truck, etc., but it is not suitable for general use. The quality was extremely low. The height of the unloading conveyor, such as a deck or truck, differs depending on the vehicle type, so it is necessary to determine the height of the unloading conveyor according to the vehicle type with the highest loading platform.In order to handle trucks with a low loading platform, etc. A device was needed to levitate the truck (in this case the rear wheels of the truck were lifted).

Therefore, the purpose of the present invention is to swing the unloading conveyor in accordance with the loading surface of the load on the loading platform of a truck or the like, so that the level can be adjusted, and the unloading conveyor can be unloaded continuously. Increase your ability,
Another object of the present invention is to provide an unloading device with a simplified structure.

[Means for solving problems]

The present invention is an unloading device that unloads loads placed in two rows on the loading platform of a truck or the like, with a gap formed between the rows of loads. an unloading conveyor having a roller conveyor section; a transport conveyor connected in series with the loading surface of the unloading conveyor aligned with the distal end side in the unloading direction; and a rocking device that moves and swings the loading platform side up and down using the loading platform side as a fulcrum, and by swinging the unloading conveyor in accordance with the surface on which the load is placed on the loading platform, the unloading conveyor is continuously unloaded. In addition, the reflector is located a certain distance below the loading surface of the loading platform, and the detector is located a certain distance below the loading surface of the unloading conveyor. and is provided in correspondence with the reflecting plate, so that the reflecting plate can be detected by the detector, and the unloading conveyor is oscillated in accordance with the vertical movement of the loading platform. The above object has been achieved by providing a device for doing so.

[Effect]

According to the unloading device of the present invention, when unloading from the loading platform of a truck or the like, after placing the loading platform at a position within a predetermined error range with respect to the unloading conveyor, the loading surface of the unloading conveyor is Under the condition that the loading surface of the unloading conveyor and the loading surface of the transport conveyor are always aligned, the loading surface of the unloading conveyor is swung to match the loading surface of the loading platform using a rocking device, and the loading surface of the loading platform is adjusted according to the progress of unloading. It is possible to continuously unload and store goods while following the vertical movement of the conveyor and aligning the loading surfaces of the loading platform.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the unloading device of the present invention shown in the drawings will be described below.

1 and 2 are a plan view and a front view, respectively, schematically showing an embodiment of the unloading device of the present invention. In these drawings, 1 is the unloading device of the present invention, and 2 is the truck. Loading platforms 3 and 3' are a pair of transport conveyors (warehousing conveyors) that transport unloaded loads from unloading conveyors 6 and 6 (described later) to a warehouse (not shown), etc., and are part of the unloading device 1. It consists of In addition, Wo is the inner dimension (width) of the loading platform 2, which is shown in Figure 1 with the truck landing exactly in the center of the berth center. Further, A and A are the maximum permissible ranges of left and right deviations of the loading platform 2 due to left and right landing deviations with respect to the forward direction of the truck toward the berth center. In addition, 4a and 4'a are the loads such as two rows of pallets on the loading platform 2 when the truck lands on the leftmost side of the berth center in the forward direction, and 4b and 4'b are the loads when the truck is in the forward direction. On the other hand, there are two rows of loads on the loading platform 2 when landing on the rightmost side of the berth center, and W is the width of these loads. In addition, D (Figure 2) shows the range of variation in the height of the loading platform 2 due to differences in the vehicle type or loading weight of the loading platform 2 (as the unloading progresses, the height of the loading platform 2 becomes lighter).
(increases). In addition, in this specification and drawings, in principle, the same members or parts are indicated by the same symbols, and the parts on the right side with respect to the unloading direction (the direction opposite to the forward direction of the truck) are marked with a dash. Doss shall not be attached to items on the left side in the direction of the arrow.

Thus, the unloading device 1 includes a rocking device 5,
The main body is equipped with a pair of unloading conveyors 6, 6' and a pair of receiving conveyors 7, 7' on the loading platform 2. When the conveyors 6, 6' are oscillated, the loads 4a, 4' placed in two rows on the loading platform 2 are
a, 4b, 4'b, respectively, are received as they are on the pair of cargo receiving conveyors 7, and then the cargoes 4a, 4'b are
The cargo is unloaded by a pair of unloading conveyors 6, 6' so as to form a gap between the rows 4'a or between the rows 4b and 4'b, and then transported to the receiving conveyors 3, 3', respectively. It has been done.

The unloading device 1 will be described in more detail with reference to FIGS. 3 to 7 showing its details.
51' as a main body, and the storage conveyor 3, 3' sides of the swing frames 51, 51' are rotatably supported by support parts 52, 52',
The loading platform 2 side is vertically driven by vertical drive sections 53, 53'. Vertical drive section 53,
Although 53' is of a crank type in this embodiment, it may be of an eccentric cam type or a hydraulic cylinder type. Reference numerals 11 and 11 designate two upper and lower detectors that are mounted on the loading platform 2 side of the swing frame 51 and located a certain distance below the loading surface of the loading conveyor 7, 7'. 53'
The detector 11,
A reflector plate 21 corresponding to the reflector plate 21 is located at a predetermined distance below and detachably attached to the rear of the truck so that it can be constantly detected by both the detectors 11 and 11. That is, the vertical drive parts 53, 5
3' is a swinging frame 51, 51 so that both detectors 11, 11 always detect the reflecting plate 21 when the reflecting plate 21 rises as the loading platform 2 of the truck rises as unloading progresses. The swinging frames 51, 51' are caused to swing vertically to follow the loading platform 2, such as by swinging the
Regardless of the top and bottom of the loading platform 2, the loading surface of the loading platform 2 and the loading surface of the unloading device 1 on the loading platform 2 side are always aligned. In addition, the upper and lower detectors 1
In order to ensure that the reflection plate 21 is detected by the reflectors 1 and 11 regardless of the difference in the left and right landing positions of the truck, a plurality of upper and lower detectors 11 and 11 are installed perpendicularly to the load carrying direction. It is preferable to arrange the reflection plates 21 in parallel and to make the width of the reflection plate 21 wider.

Further, the pair of cargo receiving conveyors 7, 7' of the unloading device 1 are connected to the swinging frame 51 of the swinging device,
It is placed and fixed on the loading platform 2 side of 51', respectively.
Endless chains 71, 7, two on each side
It consists of a chain conveyor equipped with 1,... The receiving conveyor 7 on the left side of the load carrying direction supports the load on the left side of the loading platform 2 with at least three endless chains 71, 71, 71, regardless of the manner in which the truck lands on the berthing station. The other receiving conveyor 7' is similarly constructed. Also, 72,7
2' is the drive unit 73, 73, 73 and 73', 73', 73' of the receiving conveyor 7, 7';
are rollers disposed at the tips of the receiving conveyors 7 and 7' on the loading platform 2 side, and these rollers 73 and 7
3, 73 and 73', 73', 73' are each configured to be rotatable only in the unloading direction,
When unloading the cargo at the rear end of the loading platform 2, that is, when unloading starts, the driver (unloading worker) stands on the receiving conveyor 7, 7' while the receiving conveyor 7, 7' is stopped. The load can be safely and easily pulled out onto 73, 73, 73 and 73', 73', 73' while standing. Also, the roller 73,
73, 73 and 73', 73', 73' are the goods receiving conveyors 7, 73' when the goods receiving conveyors 7, 7' are activated.
A ratchet is incorporated inside so as to be interlocked with 7'. Note that the receiving conveyors 7 and 7' may be constructed of roller conveyors, but by constructing them as chain conveyors, a deck plate can be provided between the endless chains so that workers can walk on them. Another advantage is that various control detectors can be attached by making holes in the deck plate.

Further, the pair of unloading conveyors 6, 6' of the unloading device 1 are connected to the receiving conveyors 7, 7', and the swinging frames 51, 51 of the swinging devices 5, 5',
Rollers (hereinafter referred to as oblique rollers) 62, 6 are placed and fixed on the warehousing conveyor 3, 3' side of 51'.
A pair of roller conveyor sections 61, 61' in which 2,... and 62', 62'... are arranged diagonally, respectively.
It is composed mainly of. Oblique rollers 62, 6
2, . . . and 62', 62' are respectively disposed obliquely so as to move the load diagonally outward with respect to the carrying out direction, and the oblique roller drive unit 6
3, 63'. Then, the oblique rollers 62, 62, . . . of the roller conveyor section 61 on the left side in the carrying-out direction and the oblique rollers 62', 62', . . . of the roller conveyor section 61' on the right side.
Regardless of the landing deviation of the truck, the loads 4a and 4b on the left side in the discharge direction on the loading platform 2 are continuously unloaded by the left roller conveyor section 61, and the loads 4a and 4b on the right side in the unloading direction on the loading platform 2 The loads 4'a and 4'b are spaced at a predetermined interval so that they can be unloaded continuously on the right roller conveyor section 61'. Casters 64, 64, .
62,... or 62', 62',... and caster 6
4, 64, . . . so that it can be supported.
The casters 64, 64, . . . may be wheels, rollers, or the like. Further, on both sides of both roller conveyor sections 61 and 61', there are diagonal rollers 6.
2, 62, . . . and 62', 62', . 65' is provided. The width of this guide 65, 65' is more than Wo+2A,
The width of the center pitch of the receiving conveyors 3 and 3' is
The width of the guides 65, 65' (Wo+2A) is made smaller by the width of the load (W) (i.e., Wo+2A-).
W). The height of the unloading conveyor sections 61, 61 on the side of the warehousing conveyors 3, 3' is made equal to the height of the warehousing conveyors 3, 3'. Further, 66, 66, . . . and 66', 66', .

In addition, in the drawing, 8 is a stopper for the truck, and 9 and 9' are work platforms.

When unloading using the unloading device 1 configured as described above, the driver (worker) can move the truck onto the loading platform as long as the truck lands within the error range of A on each side from the center of the berth station. It is sufficient to simply push out the cargo from the unloading device 1, and the unloaded cargo is continuously carried out to the receiving conveyors 3, 3' while its position is adjusted by the unloading device 1.

That is, the loading surface of the loading platform 2 and the loading surface of the unloading device 1 on the loading platform 2 side are connected to the reflector 21 attached to the rear of the truck as described above.
By detecting this and swinging the swinging frames 51, 51' of the swinging devices 5, 5', it is controlled to always match regardless of the type of truck and the progress of unloading. , if the landing position of the truck is within the above error range, the receiving conveyors 7 and 7' of the unloading device 1 are facing the left and right loads of the loading platform 2, respectively, so that the landing position of the truck is within the above error range. Unloading to the unloading device 1 can be easily carried out by a worker simply pushing out the load. Then, the pushed out load 4a, 4'a or 4b, 4'b
are transported as they are to the roller conveyor sections 6, 6' by the receiving conveyors 7, 7',
The roller conveyor sections 6, 6' are provided with oblique rollers 62, 62, . . .
4, 64... are arranged, the load 4a or 4b is reliably pressed against the left guide 65 by the left roller conveyor section 61 before reaching the left warehousing conveyor 3. The cargo is conveyed to the left-hand receiving conveyor 3 while adjusting its direction, and the cargo 4'a or 4'b is similarly separated from the cargo 4a or 4b and transferred to the right-hand receiving conveyor 3'. Before reaching , the load is reliably pressed against the right guide 65' by the right roller conveyor section 61', and the load is conveyed to the right storage conveyor 3' while the direction of the load is adjusted.

Incidentally, the unloading device of the present invention is not limited to the above-mentioned embodiment; for example, in the embodiment, two swing devices 5 are provided, but these are provided as a single one, and the unloading conveyor 6 , 6' and the receiving conveyor 7, 7' can be mounted on a single swinging frame.

[Effect of idea]

As described above, the unloading device of the present invention swings the unloading conveyor in accordance with the surface on which the load is placed on the loading platform of a truck, etc., so that the unloading conveyor and the loading platform can be leveled, and The loading surfaces of the transport conveyor and the transport conveyor (warehousing conveyor) are always aligned to ensure continuous unloading, and reflective plates and detectors are installed to ensure that the loading surfaces of the conveyor and the transport conveyor (warehousing conveyor) are aligned at all times. The loading surfaces of the unloading conveyor and the loading platform are aligned to follow the up and down movement of the loading platform as the loading progresses, allowing for smoother continuous unloading and improved unloading capacity. Its large size and simple structure make it highly practical.

[Brief explanation of the drawing]

1 and 2 are a plan view and a front view, respectively, showing an outline of an embodiment of the present invention, and FIGS. 3, 4, 5, and 6 respectively show the main parts thereof. Plan view, front view, left side view and right side view, No. 7
The figure is a schematic diagram for explaining a detection mode by a detector for swinging of the unloading conveyor. 1... Unloading device, 2... Loading platform, 4a, 4'a,
4b, 4'b... Load, 5, 5'... Rocking device, 6,
6'...Unloading conveyor, 61, 61'...Roller conveyor section, 62, 62...Rollers (oblique rollers).

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In an unloading device that unloads loads placed in two rows on the loading platform of a truck or the like so as to form a gap between the rows of loads, the rollers are An unloading conveyor including a pair of diagonally arranged roller conveyor sections, a transport conveyor connected in series with the loading surface of the unloading conveyor aligned with the front end of the unloading conveyor in the unloading direction, and the above unloading conveyor. A swinging device for swinging the conveyor by vertically moving the loading platform side using the transport conveyor side as a fulcrum, and swinging the unloading conveyor in accordance with the loading surface of the load on the loading platform. In addition, the reflector is positioned a certain distance below the surface on which the cargo is placed on the loading platform, and the detector is installed at a certain distance below the surface on which the cargo is placed on the unloading conveyor. The unloading conveyor is positioned a certain distance below the surface and is provided in correspondence with the reflecting plate, so that the reflecting plate can be detected by the detector, and the unloading conveyor is oscillated in accordance with the vertical movement of the loading platform. An unloading device characterized by: (2) A roller is disposed at the tip of the loading platform side of the unloading conveyor, and the roller is structured to be rotatable only in the unloading direction, as stated in claim (1) of the utility model registration. unloading equipment.