JPH07228357A - Truck loader - Google Patents

Abstract

PURPOSE:To provide a truck loader in which small set up space is only required at a low cost and further loading a cargo can be easily efficiently performed by a worker relating to a pallet of box-shaped rear door type. CONSTITUTION:A device comprises a main conveyer 2 telescopically movable from behind a pallet 50 of a truck leading to the inner part and a loading assist device provided in a point end of this main conveyer 2 to move between the rear of the pallet 50 and the inner part according to telescopically operating this main conveyer 2. The auxiliary loading device 3 comprises a work bench 45 lifted with a worker riding in and an auxiliary conveyer 30 capable of vertically tilting with a rear end part in a side of the main conveyer 2 serving as the supporting point to convey a cargo W, conveyed via the main conveyer 2, to hand of the worker.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a truck loader used for loading luggage on a bed such as a large truck.

[0002]

2. Description of the Related Art Conventionally, for example, a large-sized box-type rear door type truck whose cargo bed is covered with a panel or a hood and which is used for loading and unloading luggage from the rear has a luggage large enough to be held by a person. When loading a large number, for example, the following method was used. First, for example, using a forklift device, after raising a pallet carrying a large number of loads up to the loading platform height, an operator boarding the loading platform carries a proper number of these loads to the back of the loading platform and sequentially loads them in a predetermined manner. They were piled up side by side. Secondly, by using a track loader which is a combination of a gate-type carrier device having a gripping device capable of gripping and moving the baggage vertically, horizontally and longitudinally, and a conveyor with a trolley that is used by being loaded on a cargo bed. Luggage was being stacked in sequence from the back of the cargo bed. Third,
For so-called wing-body type trucks that are configured to open the roof to the panels that cover the cargo bed or the sides of the hood to the roof, put the cargo on a pallet and use a forklift to load the cargo along the horizontal row of the cargo bed. They were loading and unloading all at once.

[0003]

However, according to the first method, an operator who has boarded a loading platform has to make a number of round trips between the forklift device and the loading location, so that there is a lot of luggage. Was a heavy labor for the workers, and also had to pile up the cargo on a high part of the bed, which was also a difficult work. According to the second method, not only the cost is increased due to the large scale of the device, but also a large installation space is required, so that it is necessary to secure a parking space for trucks or a space for storing luggage as wide as possible. On the contrary, it was often a hindrance. Also,
According to the third method, there is a problem that a wing body type truck cannot be used for loading and unloading, and the pallet is loaded on the sending side in order to load the pallet.

The present invention has been made in view of these problems in the related art, and it is low cost, requires a small installation space, and allows a worker to efficiently and comfortably load a box-shaped rear door type cargo platform. It is intended to provide a truck loader capable of.

[0005]

For this reason, the invention according to claim 1 is characterized in that a main conveyor which can be expanded and contracted from the rear of the cargo bed of the truck to the inner part, and an extension and contraction of the main conveyor which is equipped at the tip of this main conveyor. A loading assisting device that moves between the rear and the inner part of the loading platform according to the operation is provided, and the loading assisting device is a workbench that lifts and lowers a worker, and a rear end portion on the main conveyor side. It is possible to tilt up and down with the fulcrum as a fulcrum, and an auxiliary conveyor that conveys the cargo conveyed through the main conveyor to the operator's hand.

According to a second aspect of the present invention, in the first aspect of the present invention, the auxiliary conveyor is configured to urge an alignment table that is always held in a horizontal state regardless of tilting of the auxiliary conveyor. And

According to a third aspect of the present invention, in the above-mentioned first or second aspect of the invention, when the main conveyor is reduced to the shortest length, the reduced main conveyor and the loading assistance device are placed. A base is provided, which can be tilted upward with the rear end side as a fulcrum, and in a state in which the cross plate provided at the tip of the base is hung on the truck bed by adjusting the tilt angle of the base. It is characterized in that the inclination angle of the transition plate can be corrected.

The invention according to claim 4 is the above-mentioned claim 1, 2
Alternatively, in the invention described in 3, the loading auxiliary device is connected to the tip of the main conveyor through a connecting part, and the connecting part is such that the loading auxiliary device is displaced in the vertical direction and the width direction with respect to the main conveyor, and It is characterized in that it is allowed to move in a direction inclined with respect to the direction of expansion and contraction.

According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the loading assisting device includes a side arm projecting horizontally in one side portion in the traveling direction. While horizontally rolling and pressing the roller attached to the tip of the roller against the side wall of the loading platform facing the one side, the force of turning to the side wall by the expansion and contraction operation of the main conveyor is applied. Upon receiving, the loading auxiliary device moves along the side wall.

According to a sixth aspect of the present invention, in the truck loader according to the first aspect, the auxiliary conveyor and the main conveyor are operated in opposite directions to be used as an unloader for loading and unloading cargo.

[0011]

According to the structure of the first aspect, in a state where the main conveyor is extended and the loading auxiliary device is inserted into the inside of the loading platform of the truck, the worker rides on the lifting platform, and a large number of workers are at their hands. Transport the cargo of the above through the main conveyor and the auxiliary conveyor. The worker sequentially loads the parcels transported to his / her hand onto the bed. In this way, since the load to be loaded is conveyed to the worker's hand, the worker can remain on the workbench, and does not have to repeatedly reciprocate between the loading position and the forklift as in the conventional case. Further, since the workbench moves up and down, even when the luggage is stacked at a high place, the worker can easily stack the luggage without taking an unreasonable posture such as stretching the back. Moreover,
Since the auxiliary conveyor can be tilted up and down, the load is conveyed to the operator regardless of the stacking height.

According to the second aspect of the present invention, after arranging an appropriate number of loads conveyed to the operator's hand through the auxiliary conveyor on the aligning table by an appropriate number, the worker can put the plurality of loads at once. By pushing it forward, the plurality of loads can be efficiently loaded at once. Since the alignment table is always kept horizontal regardless of the tilt of the auxiliary conveyor, a plurality of packages can be reliably aligned on the alignment table.

According to the third aspect of the present invention, since the crossover plate is always held at the gentle inclination angle, the movement between the base of the loading assistance device and the truck carrier can be performed smoothly. In particular, as the load on the truck bed increases, the floor surface of the truck gradually sinks, so there may be an unacceptable step with the base when the loading operation is completed. Even in this case, the inclination angle of the base is corrected so that the inclination angle of the crossover plate is held gently, so that the loading auxiliary device that has finished the loading operation can be smoothly returned from the truck bed onto the base.

According to the fourth aspect of the present invention, there is a case where the floor surface of the loading platform is displaced due to an increase in the loading amount of the load, or the loading auxiliary device moves in a direction inclined with respect to the expansion / contraction direction of the conveyor. However, the loading auxiliary device can move smoothly without applying excessive force to the conveyor. From this, the truck bed does not have to be stopped exactly parallel to the direction of expansion and contraction of the main conveyor,
Even if the loading platform is tilted with respect to the expansion / contraction direction of the main conveyor within a certain range, the loading auxiliary device can be moved smoothly.

According to the fifth aspect of the present invention, the side arm is projected from the one side of the loading device, and the loading assisting device is provided with a force for turning the side arm to the projected side. The roller at the tip of the side arm is pressed against the side wall of the loading platform, and the main conveyor is expanded and contracted in this state, whereby the loading auxiliary device moves while rolling the roller onto the side wall. That is, the side arm is pressed against the side wall to perform a tensioning action, and the loading assist device moves while the side arm is tensioned between the side arm and the side arm. Therefore, the loading device moves along the sidewall.

Here, since the loading auxiliary device can change the direction (pivot) obliquely with respect to the expansion / contraction direction of the main conveyor through the connecting portion, it is necessary to give a force to rotate the loading auxiliary device. In this connection part, the center line of the loading auxiliary device may be connected to the side wall side while being shifted from the center line of the main conveyor. When the main conveyor extends and the loading auxiliary device moves forward, the turning force is efficiently provided by steering the wheels of the loading auxiliary device to the side wall side, while the main conversely conversely. When the conveyor shrinks and the loading aid is retracted, it is necessary to steer the wheels to the opposite side. Thus, as the main conveyor expands and contracts, the loading assistance device moves reliably along the side wall of the bed, so that the center line of the bed and the center line of the main conveyor do not have to be exactly parallel, and therefore the truck The stop position may be rough within a certain range.

According to the sixth aspect of the invention, the truck loader is used not only for loading cargo but also as an unloader for loading and unloading cargo loaded in the bed.

[0018]

Embodiments of the present invention will be described below with reference to FIGS. As shown in FIG. 1 and FIG. 2, the truck loader 1 of the present embodiment includes a main conveyor 2 that is extendable from the rear (right side in the figure) of the truck carrier 50 to the rear part (left side in the figure), and the main conveyor 2. It is mainly composed of a loading assisting device 3 which is connected to a front end (the left end in the drawing) and moves between the rear part and the inner part of the loading platform 50 by the expansion and contraction operation of the main conveyor 2.

The main conveyor 2 is a belt conveyor which is composed of sub-conveyors 2a to 2e which are slidable with each other and which can be expanded and contracted in five stages. Although not shown, the main conveyor 2 has a built-in drive source for actively expanding and contracting. There is. Further, as shown in FIG. 1, the second, third and fourth sub-conveyors 2b,
Legs 2 with casters at the tips of 2c and 2d
bb, 2cc, 2dd are provided so that the overhang load when the main conveyor 2 is extended is reduced and the loading auxiliary device 3 can move smoothly. When the main conveyor 2 is reduced, the first to fourth sub-conveyors 2a to 2d are housed in the last sub-conveyor 2e (on the side of the expansion / contraction base) (see FIGS. 3 and 4).

The main conveyor 2 is installed on a platform 51 for carrying out cargo via the base 4 on which the last sub-conveyor 2e is placed. On the bottom surface of the base 4, a total of four wheels 4a, 4a,
4b, 4b are provided. Further, as shown in FIGS. 3 and 4, the rear wheels 4b, 4
A cylinder 4d having a pad 4c attached to the rod tip is attached downward near b, and when the cylinder 4d is actuated in the protruding direction to press the pad 4c against the upper surface of the platform 51, The rear side is lifted from the platform 51 as shown in FIG. By thus raising the rear part, when the base 4 is tilted, the support part of the pad 4c serves as a fulcrum of tilting.

Next, on the lower surface of the front part of the base 4, there is provided an arm 7 with casters which swings up and down by the cylinder 6, and when the cylinder 6 is operated in the protruding side, the arm 7 with casters moves downward. The casters 7a at the tip end thereof are swung and pressed against the platform 51, whereby the base 4 is tilted upward with the ground contact portion of the pad 4c as the fulcrum, as described above. The swing amount of the caster arm 7 can be arbitrarily set in accordance with the height of the floor 50b of the truck carrier 50 by adjusting the protruding amount of the cylinder 6.

At the tip of the base 4, there is provided a bridging plate 8 which is swingably supported in the vertical direction. The crossover plate 8 is provided to enable the loading auxiliary device 3 to move smoothly from the base 4 to the floor 50b of the truck carrier 50, and thus the floor 50b of the carrier 50 is inclined as gently as possible. It is desirable that the crossover plate 8 be slid over the caster arm 7. For this reason, the protrusion amount of the caster arm 7 is adjusted to adjust the inclination angle of the base 4 so that the inclination of the transition plate 8 can be adjusted to be gentle. .
This function is effective not only when the crossing plate 8 is hung on the luggage carrier 50 to start loading the luggage W, but also when the floor 50b of the luggage carrier 50 gradually sinks during the loading of the luggage W.

The cargo W is conveyed forward (leftward in the drawing) by the main conveyor 2 of the truck loader 1 installed on the base 4. The main conveyor 2
On the right side of the figure, a stationary type conveyor 10 is installed in parallel, and the cargo W is carried onto the main conveyor 2 via the conveyor 10.

Next, the loading assisting device 3 is provided with a connecting portion 11 at the tip of the first sub-conveyor 2a of the main conveyor 2.
Are connected via. As shown in FIGS. 5 and 6, on the lower surface of the front end of the first-stage sub-conveyor 2a, guide rails 13 that are closed on all sides and open downward are attached.
Vertical wheels 11 are provided on both sides of the front surface of the guide rail 13.
a and 11a are attached. This vertical wheel 11
The axes of a and 11a coincide with the expansion and contraction direction of the main conveyor 2. On the other hand, a connecting bracket 12 is attached to the rear portion of the loading auxiliary device 3, and a horizontal wheel 12a is attached to the center of the upper surface of the connecting bracket 12 in the width direction. The axis of the lateral wheel 12a is perpendicular to the expansion / contraction direction of the main conveyor 2 in the vertical direction.
Then, this lateral wheel 12a is connected to the guide rail 13 described above.
It is fitted inside and is supported so as to be rollable in the width direction and displaceable in a certain range in the vertical direction, and the vertical wheels 11a, 11a are rotatably mounted on the upper surface of the connecting bracket 12. There is. Further, a sensor 14 is attached to the rear portion of the connecting bracket 12 via a bracket 14a, and the sensor 14 is provided on the rear surface of the guide rail 13 at a proper interval.
a, 13a.

By using the connecting portion 11 configured as described above, the loading auxiliary device 3 can be operated by the main conveyor 2
On the other hand, it has a degree of freedom with respect to the left and right runout with respect to the traveling direction (it is possible to swing left and right around the rotation axis of the lateral wheel 12a), and is constant in the width direction (left and right direction with respect to the traveling direction) Are connected in a range having a degree of freedom. A lateral displacement of the loading auxiliary device 3 with respect to the main conveyor 2 is detected by a sensor 14. That is, when the loading auxiliary device 3 is displaced from the main conveyor 2 in the left / right direction by a certain amount or more, one dog 13a comes into contact with the sensor 14, which causes the sensor 14 to operate and the left / right deviation is greater than a certain amount. Is confirmed, and based on this, measures such as stopping the expansion / contraction operation of the main conveyor 2 are taken.

Here, in the connecting portion 11, the center line C3 of the loading auxiliary device 3 is always on the right side (upper side in the drawing) of the center line C2 of the main conveyor 2 as shown in FIG. The dogs 13a and 13a are set so that they are displaced from each other, and that this deviation is always generated.
The position of is set. Therefore, the main conveyor 2
When is extended, the loading auxiliary device 3 is moved forward while receiving a turning force to the right side in the traveling direction, and thus a force in a direction approaching the side wall 50a on the right side in the traveling direction. On the contrary, when moving backward, the loading assisting device 3 operates on the right side wall 5 for the same reason.
It moves while receiving a force in the direction of approaching 0a.

Next, the loading auxiliary device 3 has a frame 20 as shown in FIGS. 7 and 8, and wheels 22 to 22 are attached to the four corners of the frame 20. Each wheel 22 is swingably supported at a constant angle to the left and right in the traveling direction. Further, the two wheels 22, 22 on the right side in the traveling direction (the upper side in FIG. 7) swing together in the same direction via a connecting bar 22a, and a cylinder 22b is connected to the front wheel 22. As a result, by operating the cylinder 22b in the projecting or retracting direction, the front and rear wheels 22, 22 on the right side are interlocked to forcibly swing to the left or right.

Here, as described above, when the loading assisting device 3 is moved, it receives a turning force in a direction approaching the right side wall of the loading platform 50. At this time, the cylinder 22b is actuated in the projecting direction to move to the right side. By forcibly swinging the front and rear wheels 22 to the right, the turning force is increased.
The loading assisting device 3 is advanced along the side wall 50a on the right side of the loading platform 50 in combination with the actions of the side arms 23 and 24 described below. Loading platform 5
When retreating in 0, the cylinder 22b is actuated in the retracting direction and the front and rear wheels 22, 22 are swung to the left, so that a turning force in the opposite direction to the above is effectively applied, whereby the loading assist device 3 is both side arms 23, 2
Combined with the action of 4, the vehicle moves backward along the side wall 50a on the right side of the loading platform 50.

The side frames 23, 24 are supported on the right side of the frame 20 so as to be horizontally swingable. Rollers 23a and 24a are attached to the tips of the side arms 23 and 24, respectively, so as to be rollable in the front-rear direction on the side wall 50b of the luggage carrier 50. Both side arms 23 and 24 have cylinders 25 and 26, respectively.
When both cylinders 25, 26 are actuated in the projecting direction, both side arms 23, 24 are swung in a direction of laterally projecting, so that the rollers 23a, 24a at the tips of the respective side arms 23, 24 are moved. Side wall 50a on the right side of
Be pressed against. Here, as described above, the loading auxiliary device 3 moves while receiving the turning force in the direction of approaching the right side wall 50a of the loading platform 50, but the both side arms 23 and 24 are protruded to the side. Roller 23
When the a and 24a are pressed against the side wall 50a, the loading auxiliary device 3 has a certain space between it and the side wall 50a, and moves forward or backward without leaving the side wall 50a. That is, the loading assistance device 3
Is always moved along the side wall 50a by the turning force generated by the displacement of the center lines C2, C3 and the tensioning action of the side arms 23, 24.

Guide wheels 27, 27 are attached to the lower surface of the frame 20 at two positions on the line parallel to the center line C3, which are spaced at appropriate intervals in the front and rear. The rotation axes of the two guide wheels 27, 27 are vertically orthogonal to the moving direction of the loading auxiliary device 3 (extending and contracting direction of the main conveyor 2) as shown in FIG. The two guide wheels 27, 27 are the upper surface of the base 4 and the center line C2 of the main conveyor 2 when the loading assisting device 3 is on standby on the base 4.
Fit in a guide groove 4e formed on a line parallel to,
As a result, the position (particularly the width direction) of the loading auxiliary device 3 with respect to the base 4 is always constant during standby. That is, when the loading auxiliary device 3 advances from above the base 4 into the cargo bed 50, or from inside the cargo bed 50 to the base 4.
When returned to the upper position, the two guide wheels 27, 27 are fitted into the guide groove 4e and guided, and the loading auxiliary device 3 moves straight.

Next, an auxiliary conveyor 30 is mounted on the upper portion of the frame 20. This auxiliary conveyor 30 is a belt conveyor, and a roller 30a which itself actively rotates by a built-in motor rotates an endless belt. The structure is used. Moreover, as shown in FIG. 8, the auxiliary conveyor 30 is supported by a hydraulic cylinder 42 as a drive source so as to be vertically swingable around a fulcrum 30b at the rear end, and the cylinder 42 operates in the projecting direction. Then, the auxiliary conveyor 30 moves downward, and when it operates in the retracting direction, it moves upward. In addition, between the auxiliary conveyor 30 and the main conveyor 2, the luggage W
Guide bars 15 and 15 are disposed on both sides of the conveyance path of the above, and the luggage W is carried onto the auxiliary conveyor 30 via the main conveyor 2 by the guide bars 15 and 15.

An alignment table 40 is attached to the tip of the auxiliary conveyor 30. The alignment table 40 is independently swingably supported about a fulcrum 40a in the vertical direction, and the alignment table 40 and the auxiliary conveyor 3 are supported.
A link bar 41 is laid between the rear end portion of 0 and the rear end portion so as to be rotatable at both ends. Therefore, the alignment table 40 is always held horizontally regardless of the vertical movement of the auxiliary conveyor 30.

Although not shown, the alignment table 40 is constructed so that compressed air can be blown from the upper surface thereof to reduce the sliding resistance between the alignment table 40 and the load W. When the loads W are moved on the alignment table 40 during the loading operation, the worker can easily move the loads W with a lighter force.

Further, the alignment table 40 is composed of two tables 40b and 40c as shown in FIG.
The table 40b on the lower side in the drawing is foldably supported on the upper surface side of the table 40c supported by the auxiliary conveyor 30. If folded, it will be compactly housed in the width direction of the cargo bed, and if opened as shown in the drawing, the cargo bed 50
Is almost fully expanded in the width direction. Also, both tables 40
Since two long rollers 40d are coaxially attached to the tips of b and 40c, the luggage W can be pushed out from the alignment table 40 with a light force. .

Next, on the front part of the frame 20, a work table 45 on which a worker rides is provided. This work table 45
Has a configuration in which it is moved in parallel in the vertical direction by a pantograph type lift device using a hydraulic cylinder as a drive source, but since it is conventionally known, the description thereof is omitted.
The work table 45 can also be compactly accommodated by folding the work table 45 in two in the width direction of the loading table 50. Figure 8
As shown in FIG. 2, a worker rides on the work table 45 and moves the auxiliary conveyor 30 up and down while moving vertically, so that the cargo W can be loaded in the height direction of the cargo bed 50 and the cargo can be placed at a high position. Even when the luggage W is stacked, the worker does not have to stretch his back and lift the luggage W in an unreasonable posture.

In addition, the loading auxiliary device 3 includes a hydraulic unit 46 as a hydraulic power source for the hydraulic cylinders (22b, 25, 26, 42, etc.), or an operation panel 47.
An electric cord reel 48 and the like are mounted. Control panel 47
Is attached to the workbench 45 as shown in FIG. 8 and moves vertically with the workbench 45. The electric cord reel 48 becomes free when the loading auxiliary device 3 moves forward, and the electric cord is pulled out, but when the loading auxiliary device 3 moves backward, the electric code reel 48 positively winds the electric cord by a built-in motor drive. .

The truck loader 1 of this example is constructed as described above, and according to this truck loader 1, the actual loading work is performed as follows. First, the truck loader 1 is in a standby state in which the main conveyor 2 is shortened to the shortest and the loading auxiliary device 3 is located on the base 4. In this state, the truck is retracted and the loading platform 5 is moved.
The 0 rear area entrance is brought closer to the platform 51. At this time, the truck loader 1 moves the truck carrier 50
The truck is stopped so that the truck is positioned closer to the side wall 50a on the right side of. In this standby state, the transition plate 8 provided at the tip of the base 4 is in the state of being rotated to the uppermost position as shown by the solid line in FIG.

When the truck is stopped at a predetermined position, the operator pivots the crossing plate 8 downward and bridges it over the rear end of the floor 50b of the luggage carrier 50, and thereafter, the truck loader 1 is moved to the base 4 of the base 4. And the crossover plate 8 is pressed against the right side wall 50a. After this state, the cylinder 4d is projected and the pad 4c is pressed against the platform 51, whereby the rear wheel 4b is lifted from the platform 51. At the same time, the cylinder 6 is actuated in the protruding direction and the caster-equipped arm 7 is swung downward, so that the caster 7a at the tip thereof is pressed against the platform 51. Then, as shown in FIG. 4, the base 4 is tilted in a direction in which the front portion is lifted upward with the support portion of the pad 4c as a fulcrum. The cylinder 6 is projected to the stroke end, whereby the base 4 is tilted upward at the largest angle. In this state, when the inclination angle of the transition plate 8 is not moderately moderate, the stroke of the cylinder 6 is adjusted to adjust the inclination angle of the base 4, whereby the inclination angle of the transition plate 8 is smoothly adjusted by the loading assist device 3. Adjust the angle so that it can be crossed over.

As described above, the truck loader 1
Is located on the right side of the loading platform 50, and the main conveyor 2 is extended after the bridging plate 8 is laid over. Then, the loading auxiliary device 3 is pushed by the extension force of the main conveyor 2 to move forward. At this time, in the loading assistance device 3, since the guide wheels 27, 27 attached to the lower surface of the base 4 are guided to the guide grooves 4e provided on the upper surface of the base 4, each wheel 22 is supported so as to swing freely. In addition, the loading auxiliary device 3 goes straight even though the center line C3 of the loading auxiliary device 3 and the center line C2 of the main conveyor 2 are deviated.

In the process in which the loading assistance device 3 enters the rear part of the loading platform 50 through the crossing plate 8, when the front part of the loading assistance device 3 enters, the cylinder 25 is first actuated in the protruding direction so that the side arm 23 on the front side is moved to the side. The roller 23a at the tip thereof is pressed against the right side wall 50a. When the loading assistance device 3 has advanced further and has completely entered the rear part of the bed 50, the cylinder 26 is then actuated in the projecting direction to project the rear side arm 24 laterally, whereby the rear side arm 24 is projected. The roller 24a is also pressed against the right side wall 50a. At the same time, the cylinder 22b is actuated in the protruding direction to swing the right and left front wheels 22, 22 to the right. When the extension of the main conveyor 2 is further continued in this state, the center line C3 of the loading auxiliary device 3 is displaced to the right side with respect to the center line C2 of the main conveyor 2, and the front and rear wheels 22, 22 on the right side are swung to the right. Therefore, the loading assistance device 3 receives the turning force on the right side.
Since both side arms 23, 24 are projected and have a tensioning action with the side wall 50a, as a result, the loading auxiliary device 3 cannot swivel and goes straight along the side wall 50a without separating from the side wall 50a. To do.

In this way, the loading auxiliary device 3 goes straight along the side wall 50a to stop the extension operation of the main conveyor 2 at the time when it reaches the loading position at the innermost portion of the loading platform 50, and then the main conveyor. 2. The stationary conveyer 10 and the auxiliary conveyer 30 mounted on the loading auxiliary device 3 are activated to start loading the luggage W into the loading platform 50.

The loads W to W loaded into the loading platform 50 from the rear via the respective conveyors 10, 2 and 30 are guided by the guide bar 1.
It is carried in on the auxiliary conveyor 30 of the loading auxiliary device 3 in a state of being aligned in a line by 5, 15. on the other hand,
At this point, the alignment table 40 and the work table 45 are unfolded to the left and at the lowest position. The worker rides on the work table 45 and sequentially transfers the loads W conveyed on the auxiliary conveyor 30 onto the alignment table 40, and, for example, five loads W to W on the alignment table 40.
Are aligned in the width direction of the loading platform 50. After the five pieces are aligned, they are pushed forward and loaded on the floor 50b of the bed 50. As described above, first, the loading of the first step in the innermost part is completed. Next, the auxiliary conveyor 30 is moved upward to raise the alignment table 40 by a height corresponding to one load, and then, in the same manner as above, five loads W to W are loaded on the alignment table 40 in the width direction. And push it forward as it is to load the second-stage luggage W to W above the first-stage luggage W to W.
Stack on top. By repeating the above operation,
By vertically stacking the five loads W to W in the width direction in four stages, the loads are loaded to the maximum height at the innermost portion. In addition, for example, when stacking the loads W to W on a relatively high portion such as the third step and the fourth step, the workbench 45 is appropriately lifted so that the worker takes an uncomfortable posture such as stretching the back. You can carry out loading work in the most comfortable position without

After the loading of the innermost part is completed,
The main conveyor 2 is reduced by a distance corresponding to one piece of luggage, and the loading auxiliary device 3 is retracted by the same distance. At this time, the alignment table 40 and the work table 45 are returned to the lowest position.

By repeating the same operation again at the position retracted by the above distance, the loads W to W, which are arranged in the widthwise direction five in front of the innermost part, are vertically stacked in five stages. As described above, each time the alignment table 40 and the workbench 45 are raised by a height corresponding to one piece of luggage, the five pieces of luggage W to W aligned on the alignment table 40 are pushed out and stacked, and each time this is completed. By moving the loading auxiliary device backward by a distance corresponding to one piece of luggage and repeating the same operation, a large number of luggage W can be filled in the space of the bed 50.
Is loaded.

Here, if the loading amount of the luggage W increases, the cargo bed 50 gradually sinks due to its weight, so that the floor 50b
The step between the platform and the platform 51 changes, and thus the inclination angle of the transition plate 8 changes. There is no problem when the inclination angle of the transition plate 8 changes in a gradual direction, but when the inclination angle changes in a steep direction, when the loading auxiliary device 3 returns to the base 4 smoothly as it is. Becomes an obstacle. Therefore, in this case, the cylinder 6
Is operated in the retracting direction to retract the arm 7 with casters, whereby the inclination angle of the base 4 is adjusted so that the inclination angle 8 of the transition plate becomes gentle.

When all the loads W have been loaded, the worker descends from the work table 45 and finishes the work, while the main conveyor 2 is reduced to the shortest length and the loading auxiliary device 3 is placed on the base 4. Return to the standby position. Here, as described above, since the crossing plate 8 is always kept at a gentle inclination in spite of the sinking of the floor 50b of the luggage carrier 50, the loading assisting device 3 smoothly passes through the crossing plate 8 and is smoothly placed on the base 4. Will be returned. Further, when returning to the base 4, as shown in FIG. 9, since the guide wheels 27, 27 are guided by the guide groove 4e provided in the base 4, the loading assisting device 3 recedes straight and waits for a predetermined time. Returned to position.

According to the truck loader 1 as described above, the worker has an appropriate number of loads W to W at the loading position.
After arranging the items, it is only necessary to push them forward, and since the loads W to be loaded are conveyed to the operator's hands one after another via the respective conveyors 10, 2 and 30, there is a conventional gap between the loading position and the forklift. There is no need to reciprocate repeatedly, and loading work can be performed very efficiently and easily. In addition, the worker uses the work table 45 to load the cargo bed 5
Since 0 can be moved in the vertical direction, even when loading luggage W at a high place, it is not necessary to take an unreasonable posture such as stretching back as in the conventional case, and the worker can easily work in this respect as well.

Further, the loading assisting device 3 and the main conveyor 2 are connected via a connecting part 11, and the connecting part 11 is free to move the loading assisting device 3 vertically and horizontally with respect to the main conveyor 2 within a certain range. Since the load carrier 50 of the truck has a certain degree, even if the truck carrier 50 is stopped at a slight angle with respect to the truck loader 1 in the standby state, the loading assist device 3 can be used without loading the main conveyor 2 with excessive force. It can be moved smoothly along the right side wall 50a of 50.

Further, the inclination angle of the transition plate 8 hung on the rear portion of the luggage carrier 50 is adjusted by adjusting the protruding amount of the cylinder 6, that is, the inclination angle of the base 4, so that the loading assisting device 3 can be arranged on the base 4 and the luggage carrier 50. It is adjusted so that it can move smoothly between the two, so that the loading of the luggage W is completed and the loading platform 50 sinks.
Even if the level difference between the floor 50b of 0 and the platform 51 is changed, the loading auxiliary device 3 is smoothly returned to the base 4.

The alignment table 40 and the work table 45 are also provided.
Since it can be folded into almost half the area, it can be stored compactly when not in use, etc.It is simpler and smaller than conventional large-scale loading devices, so not only can it be introduced at low cost, It has the advantage that it can be installed in a relatively narrow space.

Further, as the main conveyor 2 expands and contracts, the loading assisting device 3 surely moves along the side wall 50a of the load carrier 50, so that the center line of the load carrier 50 of the truck and the center line C2 of the main conveyor 2 are exactly parallel to each other. Therefore, the stop position of the truck may be rough within a certain range.

In the embodiment described above, the transition plate 8
In the above, the configuration in which the base 4 is simply rotatably supported in the vertical direction is illustrated, but the following configuration is also possible. That is, as shown in FIGS. 10 and 11, the support bracket 61 of the transition plate 8 and the support bracket 62 of the base 4 are pin-coupled via a fulcrum 63, and the transition plate 8 can be rotated in the vertical direction about the fulcrum 63. The support bracket 61 and the support bracket 62 are supported at the time when the transition plate 8 is substantially flush with the base 4.
A pin 60 is provided between and so as to be removable.
The pin 61 is supported by a bracket 64 attached to a support bracket 62 so as to be movable in the axial direction, and is urged toward the insertion side by interposing a compression coil spring 65.

According to this structure, if the worker moves the pin 60 in the pulling direction against the compression coil spring 65, the crossover plate 8 can freely rotate in the vertical direction, and the worker can pin the pin. When the finger is released from 60, the pin 60 is urged in the inserting direction by the compression coil spring 65. Therefore, when the crossover plate 8 becomes substantially horizontal with respect to the base 4, the pin 60 is inserted into the support bracket 61, whereby the crossover plate 8 is inserted. Are locked horizontally with respect to the base 4. In this locked state, if the crossover plate 8 is simply placed on the rear portion of the floor 50b of the loading platform 50, and the loading platform 50 sinks as the load increases, the crossing plate 8 moves downward together with the base 4. Therefore, since the inclination angle becomes gentler, the stroke of the caster-equipped arm 7, that is, the cylinder 6 is adjusted to adjust the stroke of the base 4.
The control for positively adjusting the inclination angle of is unnecessary. From this, it is possible to ensure smooth movement of the loading assistance device 3 from the loading platform 50 to the base 4 after particularly simplifying the control of the cylinder 6.

Further, in the above embodiment, the truck loader 1
Although the case where the loads W are loaded has been described above, the illustrated truck loader 1 can be used also as an unloader when the loads W to W loaded in reverse are unloaded from the bed 50. In this case, the alignment table 40 is not used in particular, and the worker rides on the work table 45 and moves up and down to load the loads W loaded on the high part or the low part close to the floor on the roller conveyor 30 one after another. If the cargo W goes through the conveyors 2 and 10, it is unloaded from the cargo bed 50,
This is repeated by moving the loading assisting device 3 forward from the entrance portion of the loading platform 50 to the inner portion thereof.
All of the luggage W inside can be loaded and unloaded. In this case, it goes without saying that the driving direction of each of the conveyors 30, 2 and 10 is reversed so that the conveying direction is opposite to that in the case of loading.

[0055]

According to the invention described in claim 1, since it is not necessary for the worker to reciprocate between the loading position of the load and the forklift as many times as in the conventional case, the loading work can be performed easily. . Further, by raising and lowering the workbench, the worker can easily stack the luggage at a high place without taking an unreasonable posture such as stretching the back.

According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, it is possible to more efficiently carry out the loading work.

According to the third aspect of the invention, in addition to the effect of the first or second aspect of the invention, the loading auxiliary device can be smoothly moved between the base and the bed. This is especially effective when the loading platform is gradually lowered as the loading amount of the loading increases.

According to the invention described in claim 4, in addition to the effect of the invention described in claim 1, 2 or 3, the loading auxiliary device can be moved smoothly without applying an excessive force to the main conveyor. .

According to the structure of claim 5, in addition to the effect of the invention of any one of claims 1 to 4, the loading auxiliary device can be reliably moved along the side wall of the truck bed. Workers can always load goods efficiently from a fixed position, and since the stop position of the truck only needs to be roughly rough, it will be possible to start loading work quickly without having to fix the stop position. .

According to the sixth aspect of the present invention, it is possible to efficiently and easily carry out the work of loading and unloading loads as in the loading work.

[Brief description of drawings]

FIG. 1 is a diagram of a truck loader according to an embodiment of the present invention;
It is a side view in the state where the loading auxiliary device has reached the back of the loading platform.

FIG. 2 is likewise a plan view of the truck loader in a state where the loading auxiliary device reaches the back of the loading platform.

FIG. 3 is a side view of the truck loader with the loading auxiliary device in a standby state, showing a state in which the base is not tilted.

FIG. 4 is a side view of the truck loader with the loading auxiliary device in a standby state, showing a state in which the base is tilted.

FIG. 5 is a side view of a connecting portion.

FIG. 6 is a plan view of a connecting portion.

FIG. 7 is a plan view of the loading assistance device in a state where the loading assistance device reaches the back of the loading platform.

FIG. 8 is likewise a side view of the loading assistance device in the state of reaching the back of the loading platform, showing a state during loading work.

FIG. 9 is a view taken in the direction of arrow A in FIG. 8, showing a mounted state of the guide wheel.

FIG. 10 is a side view showing another example of the structure for supporting the transition plate.

FIG. 11 is a plan view showing another example of the structure for supporting the transition plate.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Truck loader 2 ... Main conveyor 3 ... Loading assistance device 4 ... Base 7 ... Caster with casters, 8 ... Cross plate 11 ... Connection part, 11a ... Vertical wheel 12 ... Connection bracket, 12a ... Horizontal wheel 15 ... Guide bar 23, 24 ... Side arm 27 ... Guide wheel 30 ... Auxiliary conveyor, 30b ... Support point 40 ... Alignment table 41 ... Link bar 45 ... Work table 46 ... Hydraulic unit, 47 ... Operation panel, 48 ... Electric cord reel 50 ... Loading platform, 50a ... Side wall 51 … Platform W… Luggage

Claims (6)

[Claims] 1. A main conveyor that is capable of expanding and contracting from the rear to the back of a cargo bed of a truck, and a main conveyor equipped at the tip of the main conveyor, and between the rear and the back of the cargo bed as the main conveyor expands and contracts. A loading assisting device for moving the work supporter, the loading assisting device is capable of vertically tilting with a work table for raising and lowering a worker and a rear end portion of the main conveyor side as a fulcrum, and the main conveyor. A truck loader characterized in that the truck loader is configured to include an auxiliary conveyer that conveys a load conveyed through a container to a worker. 2. The truck loader according to claim 1, wherein the auxiliary conveyor is provided with an alignment table which is always held in a horizontal state regardless of tilting of the auxiliary conveyor. 3. A base for mounting the reduced main conveyor and the loading auxiliary device when the main conveyor is shortened to the shortest, and the base is tiltable upward with the rear end side as a fulcrum. The inclination angle of the transition plate can be corrected by adjusting the inclination angle of the base while the transition plate provided at the tip of the base is suspended on the truck bed. The truck loader according to 1 or 2. 4. The loading auxiliary device is connected to the tip of the main conveyor via a connecting part, and the connecting part is such that the loading auxiliary device is displaced in the vertical direction and the width direction with respect to the main conveyor, and the main conveyor expands and contracts. The truck loader according to claim 1, wherein the truck loader is configured to allow movement in a direction inclined with respect to the direction. 5. The loading auxiliary device comprises a side arm projecting horizontally on one side in the traveling direction, and a roller attached to the tip end of the side arm projecting horizontally is provided on the one side. The loading auxiliary device is configured to move along the side wall by being pressed against the side wall of the opposite loading platform to roll and receiving a force of turning toward the side wall due to the expansion and contraction operation of the main conveyor. The truck loader according to any one of claims 1 to 4. 6. The truck loader according to claim 1, wherein the auxiliary conveyor and the main conveyor are operated in opposite directions to be used as an unloader for loading and unloading cargo.