JPH0651534B2 - Platform position control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to loading a load carried out from a warehouse or the like onto a loading platform such as a truck, or loading a load loaded onto a loading platform such as a truck to a warehouse or the like. The present invention relates to a cargo bed position regulating device which is used when unloading for carrying into a car and regulates the position of a cargo bed such as a truck.

[Prior Art] Japanese Patent Publication No. 59-306
Those described in Japanese Patent No. 23, Japanese Utility Model Publication No. 52-29420, etc. are known. Explaining the prior art disclosed by the above publication, Japanese Patent Publication No. 59-30623 discloses a piston that rises and hits a truck bed or an auxiliary bumper of the truck bed to fix the truck bed, and a piston provided on the piston. There is disclosed a bed fixing means provided with a detector for stopping the rising or lowering of the piston against the bed of the truck or the auxiliary bumper of the bed.

In addition, in Japanese Utility Model Publication No. 52-29420, a level adjusting roller provided at the end of the loading platform and a bell mouth metal member having a guide into which the level adjusting roller can be fitted are provided.
There is disclosed a positioning device in which the bell mouth metal member is provided so as to be vertically adjustable with a screw jack.

[Problems to be Solved by the Invention] However, the conventional techniques described above have the following problems.

That is, JP-B-59-30623 or JP-B-52-294
The load carrier position restricting device disclosed in Japanese Patent No. 20 is fixedly installed on a berth on which a truck lands. Therefore, when the loading or unloading work on the loading platform such as a truck is performed by using the forklift, the forklift cannot freely move on the berth due to the presence of the loading platform position restricting device, and is dedicated to the forklift work. I had to set up a separate berth.

The present invention, when loading or unloading a loading platform such as a truck landed on a truck landing berth, with a simple configuration, in a truck mode such as using a load transfer device equipped with a conveyor You can regulate the position of the loading platform,
And in the fork mode such as using a forklift,
An object of the present invention is to allow a forklift to run freely on the truck landing berth without requiring a berth dedicated to forklift work.

[Means for Solving the Problems] The present invention provides a cargo bed position regulating device which is installed on a truck landing berth on which a truck can be landed and a forklift can travel and which regulates the position of a cargo bed such as a truck. And a loading platform up-and-down position regulation unit that regulates the position in
A pit-shaped storage section that is recessed in the floor surface of the truck landing berth and that can store the loading platform vertical position regulating section, and a rotating shaft to which the loading platform vertical position regulating section is fixed are rotated, and the loading platform vertical position regulating section is rotated. Is a working position in which the upper and lower portions of the storage section are projected to stand up to perform the regulation work for the upper and lower positions of the loading platform, and a standby position in which the storage section is laid down and stored without performing the regulation work. And a drive unit that can be switched and set, and a lid can be attached to the upper portion of the storage unit that stores the loading platform vertical position restriction unit.

[Operation] According to the present invention, there are the following operation effects.

That is, in the truck mode, the loading platform vertical position regulation unit is erected on the truck landing berth and set to the work position to regulate the vertical position of the loading platform such as a truck.

On the other hand, in the fork mode, the loading platform vertical position regulation unit is set in the pit-shaped storage unit recessed in the floor surface of the truck landing berth from the standing state in the truck mode and set to the standby position, and the forklift is used. The truck landing berth is allowed to travel freely.

In the above description, the loading platform vertical position regulation unit is rotated from the upright state and is laid prone in the pit-shaped storage unit. Therefore, as compared with the one that vertically moves in the pit and projects / is submerged above / below the floor surface. The pit depth can be made shallow, and the vertical movement amount of the loading platform vertical position restricting portion in the upright state can be made small, and the configuration is simple.

In the above-mentioned fork mode, the lid is attached to the upper part of the pit-shaped storage unit that stores the loading platform vertical position regulation unit. As a result, the occupancy state of the loading platform vertical position restricting portion in the truck landing berth is completely eliminated, and a completely wide traveling space for the forklift can be formed in the truck landing berth.

[Embodiment] FIG. 1 and FIG. 2 are a plan view and a front view, respectively, showing an outline of an embodiment of the present invention.
1, 1 ′ are two rows of load transfer conveyors arranged side by side,
Is a loading device (load transfer device), 3 is a truck bed,
4, 4'denotes loads such as palletized products. In this embodiment, the loads 4, 4'carried out from the two-row load conveyors 1, 1'are moved to a desired position by the loading device 2 and then transferred to the loading platform 3. I am doing it. Two sets of the conveyors 1 and 1 ′ for loading, the loading device 2 and the loading platform 3 are shown, but the number of these sets is not particularly limited. In addition, 1 ″ is a distribution conveyor that carries out loads 4 and 4 ′ from a warehouse or the like and distributes them to the load conveyors 1 and 1 ′. In addition, as for the pair of left and right members, in principle,
When showing the left side (with respect to the conveyance direction of the load), it is shown only by the reference numeral without a dash, and when showing the right side, it is shown by the same reference numeral with a dash (hereinafter the same).

The loading device 2 includes a lifting device 5 that moves up and down.
And a pair of left and right loading conveyors 6, 6'which are arranged on the lifting device 5 and move in a direction substantially perpendicular to the unloading direction of the loads 4, 4 ', and on the loading conveyors 6, 6' The main components are a pair of right and left width adjusting devices 7, 7'for moving the loads 4, 4 '.

The respective parts of the loading device 2 will be described in detail with reference to FIGS. 3 to 5 showing the details thereof. First, in the case of this embodiment, the lifting device 5 is the unloading end of the load carrying conveyors 1, 1 ′. It is fixed to the front of the section (right side in FIG. 4), and the elevating section 51 above it is moved up and down by an elevating cylinder 52. In front of the lifting unit 51, that is, on the side of the truck, a slide shaft 8 that moves horizontally in a direction substantially perpendicular to the unloading direction of the loads 4, 4'so that the horizontal position of the loading platform 3 of the truck can be detected. Is provided.

The slide shaft 8 is configured to move horizontally by a slide motor 53 in a direction substantially perpendicular to the carrying-out direction of the loads 4, 4 '. Detectors 75, 75 'of the device 7, 7',
Guide brackets 81, 81 'detected by 76'
Are mounted so that their mounting positions can be adjusted. And
On one side (left side with respect to the load carrying-out direction) of the guide bracket 81, detectors 82, 82 for detecting the horizontal position of the cargo bed 3 of the truck and a detector 83 for detecting the vertical position of the cargo bed 3, A pair of upper and lower parts 83 are provided respectively. In the case of the embodiments, each of these detectors 82, 82, 83, 83 is composed of a photoelectric tube for detecting the reflector plate 31 which is attached to the rear portion of the truck lower than the bed 3. As shown in FIGS. 6 and 7, the reflection plate 31 is attached to a predetermined position of a non-reflection reflection plate attachment plate 33 attached to the attachment stay of the truck body via the attachment portion 32. The attachment of the reflection plate 31 to the reflection plate attachment plate 33 is based on the grid of the grid provided on the surface of the reflection plate attachment plate 33,
It is preferable to position accurately according to the size of the truck. The reflection plate 31 is mounted on the right side (inside) of the left inner wall of the truck in the horizontal direction, and is mounted on the bed 3 of the truck in the vertical direction. A certain distance below the lift roller conveyor 34 is preferable. Corresponding to this, detectors 83, 83 for detecting the vertical position of the loading platform 3
Is mounted at a position such that the distance from the loading conveyors 6 and 6'is equal to the above-mentioned constant distance so that the transfer from the loading device 2 to the truck bed 3 can be performed at the same level. . The detectors 82, 82 for detecting the horizontal position of the loading platform 3 do not have such a condition.

Thus, a detector 82 for detecting the horizontal position of the loading platform 3,
When the slide motor 53 moves the slide shaft 8 to the right side (with respect to the carrying-out direction of the load), one of them detects the reflection plate 31 to stop the slide motor 53 and set the slide shaft 8 to a predetermined position. It has the function of stopping at the position. Further, the detectors 83, 83 for detecting the vertical position of the loading platform 3 are two detectors 83 when the raising / lowering section 51 is raised by driving the raising / lowering cylinder 52 of the raising / lowering device 5.
83 simultaneously detects the reflection plate 31 (both ends thereof) to stop the lifting cylinder 52 and stop the lifting unit 51 at a predetermined position, and the upper surfaces of the loading conveyors 6 and 6 ′ on the lifting unit 51 and the tracks. Lift roller conveyor 34 for loading platform 3
Has the function of matching with the upper surface of.

The pair of left and right loading conveyors 6 of the loading device 2,
6'is provided on the elevating part 51 of the elevating device 5 so that it can move horizontally in a direction substantially perpendicular to the carrying-out direction of the loads 4, 4 '. That is, a plurality of rails 54, which are substantially perpendicular to the unloading direction of the loads 4 and 4 ', are fixedly installed on the elevating part 51, and the loading conveyors 6 and 6'are respectively attached to a plurality of rails. Such a rail 5 via wheels 61, 61 '
It is arranged so that it can run freely on 4. The loading conveyors 6 and 6'are designed to move together with the loads 4 and 4'which are shunted by the squeezing devices 7 and 7'as will be described later. The brakes 62 and 62 'are attached to the brakes. Further, the loading conveyors 6 and 6'are respectively provided with drive motors 63 and
Endless chains 64,6 driven by 63 '
4'are provided on the upper left and right sides, and protective plates 65, 65 'are respectively provided between these endless chains 64, 64'.
It has a structure in which is stretched. Then, the protection plates 65 and 6
Notches 66, 66 'are formed in the central portions of the respective 5'in the longitudinal direction in the discharge direction of the loads 4, 4', and the notches are provided in the loading conveyors 6, 6 ', respectively. 66, 6
6 ', as shown in FIG.
Pushing pushers 9, 9'for pushing the loads 4, 4'on 6'to the loading platform 3 are provided (the drive mechanism thereof is not shown). Also, two load detectors 91, 92, 91 ', 92' are provided on the protective plates 65, 65 'in front and rear respectively, and the load detection on the rear side (the load carrying conveyors 1, 1'side) is performed. The push-in pushers 9, 9'operate as described above when the loads 4, 4'pass over the containers 91, 91 'and the front load detectors 92, 92' (on the side of the truck bed 3).

In addition, the pair of right and left width adjusting devices 7 of the loading device 2,
7'is provided on the elevating part 51 of the elevating device 5 so that the loads 4, 4'on the loading conveyors 6, 6'can be pulled close together. That is, the pulling devices 7, 7'are respectively
Side pushers 71, 71 ′ for pressing loads 4, 4 ′ on the loading conveyors 6, 6 ′ from the outside and a plurality of guide shafts 72, 7 integrally provided on these side pushers 71, 71 ′, respectively.
2 ', the guide shafts 72, 72' are slidably inserted into guides (bearings) 73, 73 'provided on the elevating part 51, and side pusher drive parts 74, 74 provided on the elevating part 51. By driving the side pushers 71, 71 'by ′, the load 4, on the loading conveyor 6, 6 ′,
4'is pressed from the outside. The side pushers 71, 71 'are driven by the side pusher driving units 74, 74' by the load detectors 91, 92, 91 ', 92' of the load conveyors 6, 6 '. It is arranged to start when the presence of a load 4, 4'on the 'is detected. Further, detectors 75 for detecting the proximity of the slide shaft 8 to the guide brackets 81, 81 'are respectively provided at the ends of the side pushers 71, 71' on the side of the loading platform 3 of the truck.
And 75 ', 76' (detectors 75, 76 'are used when loading loads 4 and 4'on the truck by left-justifying, and detectors 75 and 75' are loaded when loading loads 4 and 4'on both sides. Used), and the side pushers 71, 71 ′ by the side pusher drive units 74, 74 ′ are provided.
Are stopped when the guide brackets 81, 81 'are detected by the detectors 75, 75', 76 ', respectively. At this stop, the side pushers 71, 71' are respectively stopped. It is located at the width adjustment complete position and has completed the predetermined width adjustment for the loading conveyors 6 and 6'loads 4 and 4 '. Also, the side pusher 7
After completion of the width adjustment, the reference numerals 1 and 71 'respectively move outward and return to their original positions. At the time of the return, the loading conveyors that have been width-adjusted together with the loads 4 and 4' In order to return 6 and 6 ′ as well, return hooks 77 and 7 are pressed against the guide shafts 72 and 72 ′ so as to press the loading conveyors 6 and 6 ′ from the inside thereof.
7'is provided.

Further, in FIG. 1, FIG. 2 and FIG.
Is a loading platform front-back position regulating device (truck stopper) that regulates the position of the loading platform 3 in the front-rear direction by stopping (landing) the truck immediately before the loading device 2, and 200 is the load 4, 4'to the truck. A loading platform vertical position regulating device (packing platform fixing device) that regulates the vertical position of the loading platform 3 so as to prevent the loading platform 3 of the truck from being lowered due to loading. The detailed structure of the platform position regulating devices 100 and 200 will be described later.

Next, a loading method using the loading device having the above-described configuration will be described with reference to an embodiment in which loads 4, 4'are left-aligned (with respect to the forward direction of the truck) and loaded on the truck bed 3. For the movement of, refer to FIG. 8 to FIG.
The movement of each part of the apparatus will be described with reference to FIGS. It should be noted that this left-side stacking is used when traveling on a general road, and is used to prevent the load from easily collapsing to the left side because the road shoulder is normally lowered to the left.

In carrying out the loading method in this embodiment, first, as a reference step, the truck is landed (stopped) from the rear of the truck just before the loading apparatus 2. This landing does not need to be performed accurately by making the centers of the truck and the loading device 2 coincide with each other, and within the width W1 of the left and right loads 4, 4'transported on the load transport conveyors 1, 1 '. The truck bed 3 (width W2 <W1) may be inserted. Then, as described above, the reflection plate 31 is moved from the detectors 83, 83 for detecting the vertical position of the loading platform 3 to the loading conveyors 6, 6 '.
Mounted below the roller conveyor 34 of the truck bed 3 by a distance equal to the distance up to and below the inner left wall of the truck. And again, guide brackets 81, 81 'to the slide shaft 8 in the loading device 2
Is set to be equal to the width W3 (<W2) of the loads 4 and 4'which are left-justified and loaded on the loading platform 3 of the truck. It should be noted that the spacing W4 (see FIG. 1) between the side pushers 71, 71 'of the width-shifting devices 7, 7'at this reference stage.
Are in the relationship of W4> W1.

When the start button (not shown) of the loading device 2 is pressed after the above-described loading preparation is completed, the slide shaft 8 attached to the loading device 2 is moved to the right from the left end origin by the slide motor 53, and slides. When either one of the detectors 82, 82 for detecting the horizontal position of the loading platform 3 attached to the shaft 8 detects the reflective plate 31 of the truck, the slide motor 53 stops and the slide shaft 8 also stops. That is,
A loading platform detection step is performed in which the detectors 82, 82 move in a direction substantially perpendicular to the carrying-out direction of the loads 4, 4'to detect the loading platform position.

Then, the drive motors 63, 6 of the loading conveyors 6, 6 '
3'is driven, and 2 from the conveyors 1 and 1 ', respectively.
A total of four loads 4, 4, 4 ', 4', one by one, are loaded onto the loading conveyor 6, 6 '. Left and right loads 4, which were carried in
4'has the same width W1 as that of the load carrying conveyors 1, 1 '. This loading is detected by the load detectors 91, 92, 91 ', 92' on the loading conveyors 6, 6 '.

4 loads 4, 4, 4'on the loading conveyor 6, 6 ',
When 4'is loaded, the side pusher driving parts 74, 74 'of the width-shifting devices 7, 7'are driven, whereby the side pushers 71, 71' are loaded.
Align the widths of 4, 4'and 4'from both sides. The width adjustment by the side pushers 71, 71 'is performed by the detectors 75, 76 attached to the side pushers 71, 71' with the guide brackets 81, 81 'attached to the slide shaft 8 stopped at the predetermined positions as described above. It is completed by stopping the side pusher driving units 74 and 74 ′ when “′” is detected. That is, a detector 75 in which the bed position detected in the bed detection step is attached to the pulling device 7, 7 ',
By performing the width-shifting position detecting step of detecting the width-shifting completion position of the loads 4, 4, 4 ', 4'detected by 76', the width-shifting of the loads 4, 4, 4 ', 4'is completed. At this time, the guide brackets 81, 81 'attached to the slide shaft 8
As described above, the interval is equal to the width W3 of the truck which is left-justified to be loaded on the bed 3, and the left guide bracket 81 connects the left inner wall surface of the truck and the left side surface of the load. Since the slide shaft 8 has stopped moving so that the left and right loads 4 and 4'are located at positions where they can coincide with each other, the widths of the left and right loads 4, 4'are left-aligned with the loading platform 3 of the truck for loading W3.
The width of the load 4 is equal to
The left side surface of the track substantially coincides with the left inner wall surface of the truck. That is, the pushed loads 4, 4, 4 ', and 4'are in positions where they are left-justified and loaded on the truck bed 3 as they are if they are pushed toward the truck bed 3. Further, at the time of this width adjustment, the loading conveyors 6 and 6 ′ are
Together with 4, 4 ', 4', the width is adjusted to the inside, and when the width adjustment is completed, it is stopped and fixed by the brakes 62, 62 '.
In addition, when trying to load the load to the loading platform 3 of the truck by loading it to the left, the left side pusher 71 may be hardly driven when the truck is completely landed on the left side of the loading device 2.

Further, at the same time as the width adjustment as described above, the loading conveyor 6,
Leveling of the upper surface of 6'and the upper surface of the lift roller conveyor 34 of the truck bed 3 is also performed. That is,
By driving the lifting cylinder 52 of the lifting device 5, the lifting unit 5
1 rises, the slide shaft 8 attached to the elevating part 51 rises, and both detectors 83, 83 for detecting the vertical position of the loading platform 3 attached to the slide shaft 8 detect the reflection plate 31. Thus, the lifting cylinder 52 is stopped and the level adjustment is performed.

When the above-mentioned width adjustment and leveling are completed, the loading conveyors 6 and 6'are driven again, and the loads 4, 4, 4 ',
4'is a lift roller conveyor 34 of the truck bed 3.
When the rear two left and right loads 4, 4'pass over the load detectors 92, 92 'in front of the loading conveyors 6, 6' (on the loading platform 3 side of the truck), the pushing pushers 9, 9 '
Activates to push the loads 4, 4, 4 ', 4'to ensure the transfer onto the lift roller conveyor 34 of the truck bed 3 to complete the loading.

When the loading is completed, the pushing pushers 9, 9'return to their original positions, the brakes 62, 62 'of the loading conveyors 6, 6'are released, and the side pushers 71, 7' When 71 'returns to its original position, the loading conveyors 6 and 6'return to their original positions via the return hooks 77 and 77', and the elevating section 51 of the elevating device 5 descends and is placed there. The upper surfaces of the loading conveyors 6 and 6'are equal to the upper surfaces of the load carrying conveyors 1 and 1'to prepare for the next loading.

Then, using the above-mentioned loading device, as shown in FIG. 11, in order to load the loads on both sides of the truck by loading them on the loading platform 3 of the truck, guide brackets 81, 81 'to the slide shaft 8 are used.
Has a mounting interval of W3, and the width W5 (<5
The detector 7 is separated by a distance corresponding to the difference (W5-W3) from W2).
Since the detector 75 'is installed inside 6',
The detectors 75 and 75 'may be used for the width adjustment. Such a loading mode is suitable when traveling on a winding road such as a mountain pass.

As is apparent from the description of the above-described embodiment, the loading device having the above-described configuration allows the detector 82 of the slide shaft 8 to horizontally move the truck bed 3 even if the landing position of the truck is not always accurate. Since the directional position can be detected and the loads 4 and 4'can be directly moved to a predetermined position based on the detected position, if the detector 82 detects the width-adjusted position once at the start of loading, the load can be set after the start of loading. Repeated automatic loading can be performed without this detection, and it is not necessary to move the device body after aligning it to the center of the device body as in the conventional device, and to move the device body each time it is loaded. There is an advantage that it does not need to be done. Moreover, since the vertical level adjustment can be performed simultaneously with the horizontal width adjustment, there is no wasteful operation, which is highly efficient and simple. Further, since the loading conveyors 6 and 6'are designed to move together with the width-shifting devices 7 and 7 ', it is not necessary to install a conveyor orthogonal to the loading conveyors 6 and 6', and the loading conveyors 6 and 6 ' By moving 6'in this way, pushing pushers 9, 9'disposed on the loading conveyors 6, 6 '
Therefore, there is an advantage that the central portions of the loads 4, 4'can be easily pushed in without requiring any special device.

The case where the lifting device 5 is fixed at the predetermined position has been described above. However, in the practice of the present invention, the lifting device of the loading device can move horizontally in the fixed path 11 as shown in FIG. It may have a structure in which it is disposed on the dolly 12. By configuring the loading apparatus in this way, three trucks, which have been loaded on the floor after receiving a load from any one of, for example, three sets of the conveyors 1 and 1'for load transportation shown in FIG. It is possible to load a load on any one of the loading platforms 3 of the above. In addition, in FIG.
Reference numeral 13 is a limit switch for stopping the carriage 12 in front of the load carrying conveyors 1, 1'of each set.

Hereinafter, detailed structures of the front and rear position regulating device 100 and the top and bottom position regulating device 200 will be described.

The platform front / rear position restricting device 100 is shown in FIG. 1, FIG. 2, and FIG.
As shown in the figure, it is arranged at a position immediately before the truck landing berth side of the loading device 2 and is formed as shown in FIGS. 13 and 14.

That is, the loading platform front-rear position regulating device 100 includes the loading device 2
The supporting frames 101 are fixedly installed on both sides of the truck landing berth side immediately before, and the rotating shaft 103 is rotatably supported by the bearings 102 fixed on the upper portions of the supporting frames 101. A brace frame (packing platform position restricting portion) 104 is fixed to the rotating shaft 103 supported by each. On the front surface of the arm frame 104 shown in FIG. 13, a cushioning portion 105 made of rubber or the like is formed, and a landing bracket 106 is provided. The landing bracket 106 is repulsed forward by the spring 107 in FIG. 13 and is retracted rearward by the impact force exerted by the auxiliary bumper 3A of the truck, which will be described later, and the rear end collar portion 106A causes the rear surface of the arm frame 104 to move. Landing detector (limit switch) 10 installed in
8 is operable.

Further, the loading platform front-back position restricting device 100 has a brake and a motor (drive unit) 109 with a reducer fixedly installed on one side of the support frame 101, and a drive sprocket 110 fixed to the output shaft of the motor 109 and one A chain 112 is wound around a driven sprocket 111 fixed to the rotating shaft 103.

As a result, the loading platform front-rear position regulating device 100 drives the motor 109 to move the arm frame 104 to the rotary shaft 10.
3 to rotate the arm frame 104 to the work area for position regulation shown by the solid lines in FIGS.
As shown by a chain double-dashed line in FIGS. 3 and 14, it can be selectively set in any of the storage portions 113 provided in the vertical plane between the support frames 101. Armor frame 1
The setting state of 04 in the work area is detected by operating the horizontal detector (limit switch) 115 fixed to the support frame 101 by the horizontal bracket 114 fixed to the arm frame 104, and the detection result. Indicates a landing ready lamp (not shown). The setting state of the arm frame 104 in the storage section 113 is detected by the fall bracket 116 fixed to the arm frame 104 activating the fall detector (limit switch) 117 fixed to the support frame 101. .

That is, when loading the cargo bed conveyors 1 and 1'and the loading device 2 on the cargo bed 3 of the lift roller conveyor-equipped truck, the cargo bed front-rear position restricting apparatus 100 operates the operation button for switching to the truck mode. Motor 1 by operation
By driving 09, the armor frame 104 is set in the work area as shown by the solid lines in FIGS. 13 and 14 (track mode). On the other hand, in the case of loading using a forklift, the arm 109 frame 104 is driven by driving the motor 109 by operating the switching operation button to the fork mode.
13 and 14, as indicated by the chain double-dashed line in FIG.
Set to 13 (fork mode).

Therefore, according to the front and rear position regulating device 100 of the loading platform, in the truck mode, a rear loadable truck having the auxiliary bumper 3A attached thereto invades at the back to land on the floor as shown in FIGS. At that time, the arm frame 104 of the luggage rack front-back position regulating device 100 is in a horizontal state,
When the auxiliary bumper 3A pushes the landing bracket 106 urged by the spring 107, the landing detector 108 is activated, and a landing completion lamp (not shown) is turned on to support the truck driver to stop the landing completion. . The shock-absorbing portion 105 attached to the arm frame 104 receives the impact force exerted by the auxiliary bumper 3A. Thereby, the loading platform front-back position regulating device 100 protects the loading device 2 and
An appropriate stop position in the front-rear direction of the loading platform 3 is secured.

Further, according to the loading platform front-rear position restricting device 100, in the fork mode, the arm frame 104 is housed in the storage section 113 sandwiched between the support frames 101, so that the arm frame 104 with respect to the floor berth of the truck.
The occupancy state is reduced as compared with the truck mode, and it is possible to form a wide traveling space for the forklift.

In the above-described loading platform front-rear position restricting device 100, when the arm frame 104 is set in a work area where the arm frame 104 is in a horizontal state, the rotating shaft 103 integrated with the arm frame 104 is supported by the bearing 102 on the support frame 101. The driven sprocket 11 attached to one end of the rotating shaft 103.
1 is connected to a drive sprocket 110 of a motor 109 via a chain 112. The motor 109 has a built-in brake, and in this stopped state, the arm frame 104 maintains a horizontal state. The load applied to the chain 112 is only the own weight of the arm frame 104 and the like, and no great force is applied to the chain 112. Further, when the truck lands on the floor, a horizontal collision with the arm frame 104 occurs.
The bearing 102 and the support frame 10 are provided via the rotating shaft 103.
Therefore, the load is hardly applied to the driven sprocket 111 and the chain 112. The bearing 102 is installed at the same level as the auxiliary bumper 3A of the truck. Therefore, the motor 109, the drive sprocket 110, the driven sprocket 111, and the chain 112 need only have an output and strength enough to swing and fix the arm frame 104 and the like, and have a small capacity and a small size.

The loading platform vertical position regulating device 200 is shown in FIG. 1, FIG. 2, and FIG.
As shown in the figure, it is arranged at a position immediately before the truck landing berth side of the loading device 2, and is formed as shown in FIGS. 15 and 17.

That is, the loading platform up-and-down position regulation device 200 is the loading device 2
A pit-shaped storage portion 201 is formed on the floor surface immediately before the truck landing berth side, support frames 202 are fixedly installed on both sides of the bottom portion of the storage portion 201, and a bearing 203 fixed to the upper portion of each support frame 202. The rotary shaft 204 is rotatably supported by the rotary shaft 204, and a pair of left and right hydraulic cylinders (load platform position restricting parts) 205 are fixed to both ends of the rotary shaft 204. Both hydraulic cylinders 205 have their cylinder mounting portions 206 fixed to the rotary shaft 204 by fixing bolts 207. A platform support 208 is provided on the upper end of the piston rod of the hydraulic cylinder 205, and a platform detection bracket 209 is provided. The loading platform detection bracket 209 is elastically urged upward in FIG. 16 by the spring 210, and is lowered downward by the load exerted by the auxiliary bumper 3A of the truck, and the lower end flange portion 209 thereof.
By A, the detector (limit switch) 211 provided on the main body of the hydraulic cylinder 205 can be operated. 212 and 213 are hydraulic hoses. The loading platform vertical position restricting device 200 includes a lower limit detection bracket 214 provided at the upper end of the piston rod of the hydraulic cylinder 205.
However, the contracted state can be detected by operating the lower limit detector (limit switch) 215 provided in the main body of the hydraulic cylinder 205.

Further, in the loading platform vertical position restricting device 200, a motor (drive unit) 216 with a brake and a speed reducer is fixedly installed on one of the support frames 202, and a drive sprocket 217 fixed to the output shaft of the motor 216 and a rotating shaft 204. The chain 2 to the driven sprocket 218 fixed to one end of the
It is wound around 19.

As a result, the loading platform up-and-down position regulating device 200 drives the motor 216 to move the hydraulic cylinder 205 to the rotary shaft 2.
04, and the hydraulic cylinder 205 is set to a work area for position regulation shown by the solid lines in FIGS. 15 to 17 (projected upward from the storage section 201 to perform regulation work for the vertical position of the bed). Standing position) and a state set in the storage unit 201 as shown by the chain double-dashed line in FIG. 15 (a standby position where the storage unit 201 is stored prone in the storage unit 201 without performing the above-mentioned restricting work). It can be selectively set to any of the above. The setting state of the hydraulic cylinder 205 in the working area is detected by operating the upright detector (limit switch) 221 fixed to the support frame 202 by the upright detection bracket 220 fixed to the rotating shaft 204. The detection result indicates a landing possible lamp (not shown). In the setting state of the hydraulic cylinder 205 in the storage portion 201, the fall detection bracket 222 fixed to the rotation shaft 204 is set to the support frame 20.
Fall detector (limit switch) 2 fixed to 2
It is detected by activating 23.

That is, when the cargo bed vertical position restricting apparatus 200 loads the cargo cylinders 1 and 1 ′ and the loading apparatus 2 onto the cargo bed 3 of the truck equipped with the lift roller conveyor, the hydraulic cylinder 205 is used in FIG. The work area is set as shown by the solid line in FIG. 17 (track mode). On the other hand,
When loading with a forklift, the hydraulic cylinder 205 is used as shown in FIG.
Set to 01 (fork mode).

Therefore, according to the bed top / bottom position restricting device 200, in the truck mode, the rear loadable truck to which the auxiliary bumper 3A is attached is installed in the buffer section 105 attached to the arm frame 104 of the bed front / rear position restricting device 100. After touching and landing, the loading platform support portion 208 of the hydraulic cylinder 205 can be raised by pressing a raising operation button (not shown). In the luggage carrier support portion 208, the luggage carrier detection bracket 209 that has been elastically springed in advance by the spring 210 comes into contact with the auxiliary bumper 3A, and the collar portion 2 thereof is
09A stops the rise by operating the detector 211 (fixing of the bed is completed). When the truck is empty, the truck level is high because it is raised, and when the truck is loaded, the truck sinks and becomes lower, but the truck is fixed at a high level. Therefore, the loading device 2 can stably perform the loading operation without always detecting the vertical movement of the loading platform 3. After the loading device 2 completes the loading, by pressing a lowering operation button (not shown), the platform support 208 is lowered, and the lower limit detection bracket 214 operates the lower limit detector 215 to lower the platform support 208. Stops.
This allows the truck to start.

In addition, according to the loading platform up-and-down position regulating device 200, in the fork mode, the hydraulic cylinder 205 falls over by pressing an unillustrated inversion button. However, the hydraulic cylinder 205 can be turned over only when the lower limit detector 215 detects the contracted state of the piston rod. The fall of the hydraulic cylinder 205 is caused by the motor 216.
Driven by the rotation of the drive sprocket 21
7 through chain 219, driven sprocket 218
And is performed by rotating the rotating shaft 204. The fall detector 223 has a fall detection bracket 222.
When the detection is made, the operation of the motor 216 is stopped (falling is completed). When the hydraulic cylinder 205 falls completely,
Since it is stored inside the storage unit 201, if the upper portion of the storage unit 201 is covered, the forklift truck can enter and travel on the floor surface. This eliminates the occupancy state of the loading platform up-and-down position regulation device 200 with respect to the floor berth of the truck, and makes it possible to form a wide traveling space for the forklift.

In the loading platform up-and-down regulating device 200, when the hydraulic cylinder 205 is upright and supports the auxiliary bumper 3A of the truck, the load is the hydraulic cylinder 20.
Since it is received by the rotary shaft 204 and the bearing 203 via 5,
A chain 21 that can support a large load with a simple structure and that keeps the hydraulic cylinder 205 upright.
The 9 has almost no load. That is, the motor 2
16, drive sprocket 217, driven sprocket 21
8. The chain 219 is sufficient if it has an output and strength sufficient to make the hydraulic cylinder 205 fall down or stand upright, and it has a small capacity and a small size.

In addition, in the embodiment of FIGS. 1 to 17 described above, the armor frame 104 of the cargo bed front-rear position regulating device 100 is attached to the storage unit 1.
In the fork mode in which the hydraulic cylinder 205 of the loading platform up-and-down position control device 200 is stored in the storage portion 201, the loads 4, 4'are difficult to pick up with a forklift, and thus the width adjustment devices 7, 7 are stored. 'Is not used. Also, in this fork mode, the loading device 2
Is the load 4, 4'that has reached the tip of the loading conveyor 6, 6 '.
It is equipped with a forklift work control circuit that can take out one pallet at a time and forward one pallet at a time. In this fork mode, the lifting device 5 is not operated, and the loading conveyors 6 and 6'of the loading device 2 may be held at the level of the load carrying conveyors 1 and 1 '.

Further, in the embodiment shown in FIGS. 1 to 17, the hydraulic cylinder 205 is fixed to the rotary shaft 204 at its end portion, but the hydraulic cylinder 205 is fixed to the rotary shaft 204 at its intermediate portion. It may be one.

18 and 19 are a plan view and a front view showing the outline of another embodiment, respectively, in these drawings,
Reference numeral 301 is an unloading device (load transfer device), 302 is a truck bed, and 303 and 303 'are a pair of warehousing conveyors (carrying conveyors) to a warehouse (not shown). Also, W
₀ is the inner size (width) of the cargo bed 302, and is shown in FIG. 18 at the position where the truck is accurately landed on the center of the berth center. Further, A and A are cargo beds 302 due to left and right landing shifts of the truck to the berth center with respect to its forward direction.
Is the maximum allowable range of left-right deviation. Also 304a, 3
Reference numeral 04'a indicates a load such as two rows of pallets on the loading platform 302 when the truck is landed on the leftmost side of the berth center in the forward direction, and 304b and 304'b indicate that the truck reverses the berth in the forward direction. The two rows of loads on the loading platform 302 when W is landed on the rightmost side of the center, and W is the width of these loads. Further, D (FIG. 19) is a cargo bed 302.
Is a range in which the height of the cargo bed 302 varies due to the difference in the vehicle type or the difference in the loaded weight (it becomes lighter as the unloading progresses and the cargo bed 302 rises). In addition, in the present specification and the drawings, in principle, the same members or parts are designated by the same reference numerals, and those on the right side with respect to the unloading direction (direction opposite to the forward direction of the truck) are marked with a dash. The left side of the direction shall not have a dash.

Thus, the unloading device 301 includes the swinging devices 305, 3
05 'is equipped with a pair of unloading conveyors 306, 306' and a pair of load receiving conveyors 307, 307 'to form the main body thereof, and the unloading conveyor is adapted to the loading surface of the cargo bed 302. The loads 30 placed in two rows on the loading platform 302 with the swinging 306 and 306 '.
4a, 304'a or 304b, 304'b are directly received by the pair of load receiving conveyors 307, respectively, and then between the lines 304a, 304'a or 304
A pair of unloading conveyors 306, 306 'unloads and discharges to the warehousing conveyors 303, 303' so as to form a gap between the rows of b, 304'b.

FIG. 20 showing details of the unloading device 301.
This will be described in more detail with reference to FIG. 24. The rocking devices 305 and 305 'are respectively composed of rocking frames 351 and 3'.
51 'is a main component of the swing frame 35.
The upper entry storage conveyors 303, 303 'side of 1, 351' are rotatably supported by supporting portions 352, 352 ', while the loading platform 302 side is vertically driven by vertical driving portions 353, 353'. . Vertical drive unit 35
In the case of this embodiment, 3, 353 'are of the crank type, but may be of the eccentric cam type or the cylinder type such as hydraulic pressure. Reference numerals 311 and 311 denote two upper and lower detectors, which are located on a lower side of the load receiving surface of the load receiving conveyors 307 and 307 'by a predetermined distance and are attached to the bed 302 side of the swing frame 351. 353, 353 '
Is the detector 311 from the loading surface of the load on the loading platform 302.
The reflecting plate 321 corresponding to 311 and located below the fixed distance and provided on the rear portion of the truck in a detachable manner can be constantly detected by both of the detecting units 311 and 311. In other words, the vertical drive units 353, 353 ′ are configured so that when the loading plate 302 of the truck rises and the mounting plate 321 rises as the unloading progresses, the reflecting plate 321
The swinging frames 351 and 351 'are swung so that both detectors 311 and 311 constantly detect the load 30
2, the swing frames 351 and 351 'are swung so as to follow, and as a result, regardless of the upper and lower sides of the loading platform 302, the loading surface of the loading platform 302 and the loading platform 302 side of the unloading device 301 are loaded. The mounting surfaces of are always matched. In addition, the reflector 3 by the upper and lower detectors 311 and 311
In order to surely detect 21 regardless of the deviation of the landing positions on the left and right of the truck, the upper and lower detectors 311 and 31
It is preferable to arrange a plurality of each one in parallel at right angles to the load carrying-out direction and to widen the width of the reflection plate 321.

Further, the pair of load receiving conveyors 3 of the unloading device 301.
Reference numerals 07 and 307 'denote the swing frame 35 of the swing device.
1, 351 'are fixedly mounted on the cargo bed 302 side, and two endless chains 371, 3 are provided on each side.
71, ... And 371 ', 371', .. The load receiving conveyor 307 on the left side of the load unloading direction loads at least three loads on the left side of the load carrier 302 in the unloading direction regardless of the landing mode of the truck to the berth station.
It is formed so that it can be supported by 1, 371, 371,
The other load receiving conveyor 307 'is similarly formed.
Further, 372 and 372 ′ are load receiving conveyors 307 and 3
Each of the drive units 373, 373, 373 and 373 ', 373', 373 'is a cargo receiving conveyor 30.
7 and 307 'are rollers arranged at the tip end portions on the cargo bed 302 side, and these rollers 373, 373, 373 and
Each of 73 ', 373', and 373 'has a structure that is rotatable only in the unloading direction, and when unloading the load at the rearmost end of the loading platform 302, that is, when unloading starts, the load receiving conveyor 307. , 307 ′ in a stopped state, the driver (unloading worker) operates the load receiving conveyor 307,
Stand on 307 'to safely and easily load such loads 373, 3
73, 373 and 373 ', 373', 373 'are adapted for withdrawal. In addition, the rollers 373, 37
3, 373 and 373 ', 373', 373 'incorporate ratchets therein for interlocking with the load receiving conveyors 307, 307' upon activation of the load receiving conveyors 307, 307 '. In addition, the cargo receiving conveyors 307, 3
Although 07 'may be constituted by a roller conveyor, by constructing it by a chain conveyor, it is possible to arrange a deck plate between endless chains so that a worker can walk, and to make a hole in the deck plate. There is an advantage that various control detectors can be attached.

Further, the pair of unloading conveyors 3 of the unloading device 301
06 and 306 'are the above-mentioned load receiving conveyors 307 and 30
7'continuously connected to the receiving conveyors 303, 30 of the swinging frames 351, 351 'of the swinging devices 305, 305'.
The rollers (hereinafter referred to as skew rollers) 362, 362, ... And 362 ', 36 are mounted and fixed on the 3'side.
.. is mainly composed of a pair of roller conveyor portions 361 and 361 'in which 2' ...
Skew rollers 362, 362, ... And 362 ', 3
62 'are arranged obliquely so as to move the load obliquely outward with respect to the carry-out direction, and are driven by the skew roller driving units 363, 363'. Then, the roller conveyor unit 3 on the left side in the carry-out direction
61 of the skew rollers 362, 362, ... And the skew rollers 362 ′, 36 of the right roller conveyor section 361 ′.
The inner end spacings of 2 ', ...
04b is continuously unloaded by the roller conveyor section 361 on the left side, and the load 304'a on the right side in the carry-out direction on the loading platform 302,
304'b has a width of 1/4 to 1/2 of the load W so that the roller conveyor 361 'on the right side can continuously unload it. If the inner end spacing is less than 1/4, the load 304a to be unloaded by the left roller conveyor section 361 partially rides on the right roller conveyor section 361 'and is not unloaded at a predetermined position, or on the right side. Roller conveyor section 3
If the load 304'b to be unloaded at 61 'is partially loaded on the roller conveyor section 361 on the left side and is not unloaded at a predetermined position, and if the inner end spacing exceeds 1/2, the left and right sides of the truck are unloaded. Depending on the amount of landing displacement of the left roller conveyor section 361, the left roller conveyor section 361 cannot support the load 304a to be unloaded, or the right roller conveyor section 361 'can unload the load 304a.
Since 4'b cannot be supported by the right roller conveyor 361 ', it cannot be unloaded.

In addition, the casters 36 that can face any direction between the inner ends.
4, 364, ... Are provided and the load is skewed roller 362,
... or 362 ', 362', ... And casters 364, 364 ,. The casters 364, 364, ... Are wheels,
Even a roller or the like can be used. Further, skew rollers 362, 362, ... And 362 ', 36 are provided on both sides of both roller conveyor sections 361 and 361'.
A pair of guides 365, 365 'each having a large number of guide rollers are provided to guide the load moving outward by 2', ... To the storage conveyors 303, 303 '. The width of this guide 365, 365 'is W ₀
At +2 A or more, the width of the center pitch of the receiving conveyors 303, 303 'is the width of the guides 365, 365' (w ₀ +
2A), which is smaller than the load width (W) (that is, W ₀ + 2A−W). The unloading conveyor section 361,
The height of 361 on the storage conveyors 303, 303 'side is equal to the height of the storage conveyors 303, 303'. Also, 366, 366, ... And 366 ', 36
6 ', ... Are roller conveyor parts 361, respectively.
It is an ordinary roller provided at the tip of the cargo bed 302 of 361 '.

In addition, in the drawings, 309 and 309 'are work benches,
Reference numeral 100 denotes a cargo bed front-rear position restricting device (car stop stopper) for the cargo bed 302 of the truck, which is exactly the same as that used in the embodiment of FIGS. 1 to 17.

At the time of unloading by the unloading device 301 configured as described above, as long as the truck is landed within the error range of A from the center of the berth station to the left and right, respectively, after landing,
The driver (worker) only has to push the load from the loading platform 302, and the unloaded load is continuously carried out to the storage conveyors 303 and 303 'while the position is adjusted by the unloading device 301.

That is, the loading surface of the loading platform 302 and the unloading device 301
The loading surface on the side of the cargo bed 302 is the reflection plate 321 detectors 311, 311 mounted on the rear portion of the truck as described above.
By swinging the swinging frames 351 and 351 'of the swinging devices 305 and 305' to control them so that they always match regardless of the type of truck and the progress of unloading. If the landing position of the truck is within the above-mentioned error range, the load receiving conveyors 307 and 307 'of the unloading device 301 face the left and right loads of the loading platform 302 respectively, so that from the loading platform 302 of the truck to the unloading device 301. The unloading can be easily performed by the worker only pushing out the load. And the pushed load 304
a, 304'a or 304b, 304'b are unloaded by the load receiving conveyors 307, 307 'to the roller conveyor units 306, 306', but the roller conveyor units 306, 306 'have the same structure as described above. Skew rollers 362, 362, ... And 362 ', 36
2'is provided and casters 364, 364, ... Are provided between the inner ends of these rollers, so that the load 3
04a or 304b must ensure that the roller conveyor unit 3 on the left side does not reach the storage conveyor 303 on the left side.
The load 61 is pressed against the left guide 365 to adjust the direction of the load, and is carried out to the left storage conveyor 303. Also, 304'a or 304'b is also separated from the load 304a or 304b. , Before reaching the storage conveyor 303 'on the right side,
The right roller conveyer section 361 'is surely pressed against the right guide 365' to adjust the direction of the load and is carried out to the right storage conveyor 303 '.

In addition, in carrying out the present invention, the unloading device is not limited to the above-described embodiment. For example, in the embodiment, two rocking devices 305 are provided, but the unloading device is single and the unloading device is provided. The conveyors 306, 306 'and the load receiving conveyors 307, 307' can be mounted on a single rocking frame.

Further, in the embodiment shown in FIGS. 18 to 24, the same cargo bed front-rear position limiting device 100 as shown in FIGS. 13 and 14 is provided. Therefore, also in this embodiment, in the truck mode, the arm frame 104 of the luggage rack front-back position regulating device 100 is set as a work area for regulating the position of the truck with respect to the luggage rack 302 (auxiliary bumper 302A), and the luggage rack 302 is set. In the fork mode, the arm frame 104 is restricted to a predetermined front-rear direction position, and the arm frame 104 can be stored in the storage portion 113 to form a wide traveling space for the forklift in the truck landing berth.

In the embodiment of FIGS. 18 to 24, the load receiving conveyors 307 and 3 are provided in the fork mode in which the loading platform front-back position regulating device 100 and the arm frame 104 are stored.
After placing the load on the load receiving conveyors 307 and 307 'in the stopped state with the 07' positioned at the horizontal level, or after a certain period of time elapses, the forklift moves the load receiving conveyor 3
07, 307 ', the load receiving conveyor 3
07 and 307 'are controlled to operate.

Further, in the present invention, the front and rear position regulating device 100 for the loading platform.
The arm frame 104 and the hydraulic cylinder 205 of the loading platform up-and-down position regulating device 200 do not rotate to be set in either the work area or the storage section, but can be moved vertically or in any of the work area and the storage section. It may be set.

[Advantages of the Invention] As described above, the loading platform position regulating device of the present invention is used when loading a cargo carried out from a warehouse or the like onto a loading platform such as a truck, or when loading a cargo loaded onto a loading platform such as a truck to a warehouse. It is suitable for cases where automatic transfer work and forklift work are required, such as when unloading for carrying in
By storing the platform position control unit in the storage unit, the forklift truck can freely move on the truck landing berth, and thereby, both automatic transfer work and forklift work can be performed in each truck landing berth. Therefore, a berth dedicated to forklift work is not required.

Therefore, it is possible to perform automatic transfer work for main types of various types of transportation forms such as rear loading truck, side loading truck, freight car container, sea container, etc., and at the same time forklift work is possible. Therefore, it has the effect of adapting to a wide variety of transportation forms in a limited space, and the structure is extremely simple. is there.

That is, according to the present invention, when loading or unloading a cargo bed such as a truck landed on a truck landing berth, a truck mode such as using a cargo transfer device equipped with a conveyor with a simple configuration Can regulate the position of a loading platform such as a truck, and in a fork mode such as using a forklift, it is possible to use a forklift without using a dedicated berth for forklift work and to freely travel on the truck landing berth. .

[Brief description of drawings]

FIG. 1 is a plan view showing the outline of an embodiment of the present invention, FIG. 2 is a front view thereof, FIG. 3 is an enlarged detailed plan view of a loading device thereof, and FIG. 4 is an enlarged main portion of FIG. A detailed front view, FIG. 5 is an enlarged detailed right side view of the loading device, FIG. 6 is a schematic view showing a mounting state of a reflection plate mounting plate on a truck, and FIG. 7 is a perspective view showing the reflection plate mounting plate. 8, FIG. 9, FIG. 10 and FIG. 10 are a plan view, a front view and a right side view showing a left-aligned state,
FIG. 11 is a plan view showing a state in which both sides are aligned, FIG. 12 is a plan view showing a modified example of the loading device, FIG. 13 is a plan view showing an example of the front and rear position regulating device of the loading platform, and FIG. FIG. 15 is a side view in which a part of the drawing is cut away, FIG. 15 is a plan view in which an example of the loading platform vertical position restricting device is shown in a partially cutaway view, FIG. 16 is a front view of FIG. 15, and FIG. Side view of the figure, first
FIG. 8 is a plan view showing the outline of another embodiment of the present invention,
The drawings are front views, FIG. 20, FIG. 21, FIG. 22 and FIG. 23 are plan views, front views, left side views and right side views, respectively, showing essential parts thereof, and FIG. 24 is an unloading conveyor. It is a schematic diagram which shows the detection state by the detector for rocking | fluctuation. 3, 302 ... luggage carrier, 100 ... luggage carrier front-rear position regulating device, 104 ... arm frame (cargo carrier position regulating unit), 10
9 ... Motor (driving part), 113 ... Storage part, 200
...... Lifting platform vertical position regulating device, 201 …… Storing part, 205
...... Hydraulic cylinder (cargo position control unit), 216 …… Motor (driving unit).

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Nobuhiro Tanaka 1-22-15 Miyashirodai, Miyashiro-cho, Minami-Saitama-gun, Saitama (56) References: 61-176123 (JP, U)

Claims (1)

[Claims] 1. A cargo bed position regulating device which is installed on a truck landing berth on which a truck can land and a forklift can travel, and which regulates the position of a cargo bed such as a truck.
The loading platform up and down position control unit that regulates the vertical position of the loading platform, the pit-shaped storage unit that is recessed in the floor surface of the truck landing berth and that can store the loading platform up and down position control unit, and the loading platform up and down position control unit are fixed And a work position in which the loading-bottom vertical position restricting portion is protruded upward from the accommodating portion to stand up in order to perform the lifting-lowering position restricting work, and without performing the restricting operation. And a drive unit that can be switched between a standby position where the storage unit is laid down and stored, and a lid which can be attached to the upper portion of the storage unit which stores the cargo bed vertical position restricting unit. The cargo bed position regulating device characterized by the following.