JPH0752104Y2 - Truck transfer device for four-wheel car - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a truck transfer device for a four-wheel cart.

[Conventional technology] Conventionally, distribution centers, supermarkets, department stores,
Four-wheel carts are used to transport loads at production plants.

FIG. 4 shows an example of the four-wheel cart described above. A four-wheel cart 1 of this type has a pallet 3 provided with wheels 2 which can be oriented in a square on the lower surface, and a pallet 3 which stands on the outer peripheral portion of the pallet 3. Set 2
It is composed of a grid member 4 having four surfaces (three surfaces in the illustrated example), a side bar 5, a support member such as a rubber belt 6, and is packed in a cardboard box or the like in a portion surrounded by each support member above the pallet 3. A plurality of loaded loads 7 are stacked, and the four-wheel cart 1 on which the loads 7 are stacked can be pushed or pulled by an operator to move in any direction to carry the loads 7. There is.

Thus, when the four-wheel cart 1 having the loads 7 stacked thereon is transferred to the truck as described above, the four-wheel cart 1 moved onto the platform 8 as shown in FIG.
The table gate 10 provided at the rear portion is capable of being lifted and lowered, and is transferred to the inside of the track deck 11 by the pushing and pulling work of the worker.

[Problems to be Solved by the Invention] However, since there is a step at the joint between the tip of the table gate 10 of the truck 9 and the floor surface 12 of the platform 8, the wheels 2 of the four-wheel cart 1 may hit the step. When the table gate 10 is provided with an inclined surface 13 that bends downward by rotating in a direction perpendicular to the traveling direction, the table gate 10 is inclined, As a result, a load is applied to the worker side, so that the worker may not be able to easily move the four-wheel cart 1 by pushing and pulling it.

Therefore, for such truck transfer work of the four-wheel cart 1,
A great deal of labor was required by the workers, and the work efficiency was significantly reduced.

The present invention has been made in view of the above-mentioned circumstances, and a four-wheel basket capable of smoothly transferring the four-wheel basket car to the inside of the track deck without requiring the worker to push and pull the four-wheel basket car. By providing a vehicle truck transfer device,
The purpose of the present invention is to reduce the labor required for the truck transfer work of the four-wheel cart and to improve the work efficiency.

[Means for Solving the Problems] The present invention provides a self-propelled traveling carriage having a width dimension smaller than the distance between the wheels of a four-wheel basket car, and the four-wheel basket at the front and rear ends on the traveling carriage. A four-wheeled vehicle has an inclined portion between the bottom surface of the pallet at the bottom of the vehicle and the floor surface, into which the tip can enter, and each wheel of the four-wheel cart is spaced apart from the floor surface between the front and rear inclined portions. An endless retracting belt is stretched through a guide member provided on the traveling carriage so as to have a horizontal portion on which a cart can be loaded, and the retracting belt can be driven by a drive device mounted on the traveling carriage. The present invention relates to a truck transfer device for a four-wheel car.

[Operation] Therefore, in the present invention, the tip of the inclined portion of the retractable belt is made to enter between the bottom surface of the pallet and the floor surface of the bottom of the four-wheel car, and one end of the pallet is brought into contact with the middle of the inclined portion. After that, by driving the pull-in belt by a drive device loaded on the traveling carriage, the four-wheel cart is pulled up onto the traveling carriage by the pull-in belt, and each wheel is placed on the floor surface at the horizontal portion of the pull-in belt. It is loaded in a state of being separated from

After the four-wheel basket car is loaded on the traveling carriage, the traveling carriage is allowed to move by itself to move into the track deck, and the pull-in belt is driven again in the track deck, whereby the four-wheel basket car is inclined. Down through.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

1 to 3 show an embodiment of a truck transfer device for a four-wheel cart according to the present invention. In the drawings, the same reference numerals as those in FIGS. 4 and 5 represent the same parts. There is.

As shown in the drawing, the motors 15 and 16 are separately installed on the left and right (upper and lower in FIG. 2) of the front part (right side in FIGS. 1 and 2) of the vehicle body 14, and in the vicinity of the respective motors 15 and 16. The right and left side plates 17 of the vehicle body 14 rotatably and respectively extend in the left and right directions, and the right and left side plates 17 penetrate the vehicle body.
14 Two axles 19, 20 equipped with wheels 18a, 18b are arranged at the tip end portion extending outward, and are rotatably supported by bearings 21 on the vehicle body 14, and the output shafts of the respective motors 15, 16 are provided. Gears provided on the
23 and the gears 24 and 25 mounted on the axles 19 and 20, respectively, so that the axles 19 and 20 can be driven by the motors 15 and 16, respectively, and the rear portion of the vehicle body 14 (see FIG. 1 and FIG. The left side portion in FIG. 2) includes wheels 18c and 18d at both end portions that rotatably pass through the left and right side plates 17 and extend in the left and right direction, and extend through the left and right side plates 17 to the outside of the vehicle body 14. A wheelchair 28 that is self-propelled and has a width dimension y smaller than the wheel spacing x of the four-wheel cart 1 by arranging an axle 26 having Make up.

Here, the wheel-to-wheel distance x of the four-wheel cart 1 is the distance between the closest points P ₁ and P ₂ of the rotation ranges s of the wheels 2 facing each other in the front-rear direction or the left-right direction of the four-wheel cart 1. Is the distance.

The width dimension y of the traveling carriage 28 is the distance between the outer surfaces of the wheels 18a, 18b or 18c, 18d provided on the left and right of the vehicle body 14.

Further, roller shafts 29, 30 extending in the left-right direction and rotatably penetrating the left and right side plates 17 of the vehicle body 14 are arranged at the front end portion and the rear end portion of the vehicle body 14, respectively. Tip rollers 32a, 32b or 32c, 32d are provided as guide members at both end portions of the roller shafts 29, 30 which are rotatably supported and penetrate the side plates 17.

Here, in each of the tip rollers 32a, 32b or 32c, 32d, the height of the upper end thereof with respect to the floor surface 12 becomes lower than the height of the lower surface of the pallet 3 provided on the bottom of the four-wheel cart 1 with respect to the floor surface 12,
Further, the lower end thereof is provided above the floor surface 12 so as to be separated therefrom.

Further, a plurality of rotatable support rollers 33, which are guide members, are provided in the required range near the center in the front-rear direction on the outer side surfaces of the left and right side plates 17, and the height of the upper end of the support rollers 33 with respect to the floor surface 12 is the four-wheel cart 1. The support rollers 33 are arranged horizontally so that the height of the bottom surface of the pallet 3 provided at the bottom is higher than the height with respect to the floor 12, and the support rollers 33 are located at both ends of the plurality of support rollers 33 arranged horizontally.
Between the front and rear end rotors 32a, 32b or 32c, 32d provided at the front and rear ends, a plurality of rotatable intermediate rollers serving as guide members.
34, the height of the upper end with respect to the floor 12 is the support roller.
It is arranged so as to gradually descend from the height of the upper end of 33 to the upper height of each of the tip rollers 32a, 32b or 32c, 32d and approach them.

Then, the tip rollers 32a, 32b or 3 on both sides in the left-right direction are provided.
2c, 32d, each support roller 33, and each intermediate roller 34, the endless retractable belts 35, 36 are respectively wound around and stretched, so that the front and rear end portions of the retractable belts 35, 36 are stretched. To
An inclined portion 37 is formed between the lower surface of the pallet 3 provided at the bottom of the four-wheel cart 1 and the floor 12, and the front end of the inclined section 37 is formed between the front and rear inclined sections 37 of the four-wheel cart 1. A horizontal portion 38 on which the four-wheel cart 1 can be loaded is formed at a height at which the wheels 2 are separated from the floor 12.

Here, the distance w between the outer ends of the two retractable belts 35, 36 is
Is designed to fit within the width dimension y of the traveling carriage 28.

Further, it is preferable to form a plurality of concavities and convexities on the surfaces of the two retracting belts 35 and 36 so that the four-wheel cart 1 described later can be easily retracted.

Further, on the vehicle body 14 near the roller shaft 30 provided at the rear end portion of the vehicle body 14, a motor 39 is installed as a drive device for each of the retracting belts 35, 36, and a sprocket provided on the output shaft of the motor 39. The roller shaft 30 can be driven by the motor 39 by tensioning a power transmission chain 42 between the roller shaft 30 and a sprocket 41 mounted midway in the roller shaft 30.

The operation will be described below.

On the platform 8, either the traveling carriage 28 side is moved or the four-wheel cart 1 side is moved so that both retractable belts
The front end of the inclined portion 37 on the rear end side of 35, 36 is connected to the four-wheel cart 1
The bottom portion of the pallet 3 is inserted between the bottom surface and the floor surface 12, and one end of the pallet 3 in the width direction is brought into contact with the inclined portion 37.

When the motor 39 is driven in such a state to drive the two retractable belts 35 and 36 in the direction indicated by the arrow A, the four-wheel cart 1 is pulled up onto the traveling carriage 28 by the retractable belts 35 and 36, As shown by the chain double-dashed line in the figure, the two retractable belts 3
The wheels 2 are loaded on the horizontal portions 38 of 5,36 in a state of being separated from the floor surface 12.

When the four-wheel cart 1 is loaded on the horizontal portion 38 of the two pull-in belts 35, 36, the driving of the both pull-in belts 35, 36 is immediately stopped, and the left and right motors 15, 16 are simultaneously driven at this time to drive the traveling carriage. When the wheels 18a, 18b of 28 are rotated and the traveling carriage 28 is moved forward toward the truck deck 11 as shown in FIG. 3, the traveling carriage 28 will move toward the tip of the table gate 10 of the truck 9 and the floor surface 12 of the platform 8. It easily oversteps the step generated at the connection portion with and the inclined surface 13 at the tip of the table gate 10 and moves into the track deck 11.

When the carriage 28 moves into the truck deck 11, the wheels 18
When the driving of a, 18b is stopped, the traveling carriage 28 is stopped, and the two retractable belts 35, 36 are driven again in the same direction as that when the four-wheel cart 1 is loaded (the direction indicated by the arrow A in FIG. 1), The four-wheel cart 1 loaded on the horizontal portion 38 is unloaded onto the truck deck 11 via the inclined portion 37 on the front end side.

After that, the traveling carriage 28 on which the four-wheel cart 1 is lowered is retracted and returned to the platform 8 so that the truck transfer work of the new four-wheel cart 1 can be repeated.

When the traveling vehicle 28 is traveling, the left and right motors 15, 16
It is needless to say that the steering control for changing the traveling direction of the traveling carriage 28 can be freely performed by changing the number of revolutions or the rotating direction of the traveling carriage 28, and the traveling carriage 28 can travel in any direction.

Therefore, according to the above, it is possible to smoothly transfer the four-wheel cart 1 into the track deck 11 without the need for the worker to push and pull the four-wheel cart 1.
It is possible to significantly reduce the load of the truck transfer operation of the four-wheel cart 1 and to significantly improve the work efficiency.

In addition, the truck transfer device of the four-wheel cart of the present invention is not limited to the above-described embodiment, any number of retractable belts may be used, and various types of traveling systems of the traveling carriage may be adopted. It goes without saying that various changes can be made without departing from the scope of the present invention.

[Effects of the Invention] As described above, according to the truck transfer device for a four-wheel basket vehicle of the present invention, each of the four-wheel cart vehicles can be operated without requiring the worker to push and pull the four-wheel basket vehicle. Since the four-wheel basket car can be smoothly transported into the track deck by the self-propelling of the traveling carriage with the wheels separated from the floor surface, the directional wheels of the four-wheel basket car can be caught on the step, A large amount of labor is not required to move a four-wheel basket car on an inclined surface, and it is possible to significantly reduce the work of truck transfer work of a four-wheel basket car and to significantly improve work efficiency. It is possible to exert an excellent effect.

[Brief description of drawings]

1 is a side view of one embodiment of the present invention, and FIG. 2 is a side view of FIG.
FIG. 3 is a side view showing a traveling state of an embodiment of the present invention, FIG. 4 is a perspective view showing an example of a general four-wheel cart, and FIG. 5 is a conventional view. It is the schematic which shows an example. In the figure, 1 is a four-wheel cart, 2 is a wheel, 3 is a pallet, 12 is a floor surface, 28 is a traveling carriage, 32a, 32b, 32c and 32d are tip rollers (guide members), 33 are support rollers (guide members). , 34 is an intermediate roller (guide member), 35 and 36 are retracting belts, 37 is an inclined part, 38 is a horizontal part, 39 is a motor (driving device), x is the distance between the wheels of a four-wheel cart, and y is a traveling carriage. Shows the width dimension of.

Claims (1)

[Scope of utility model registration request] 1. A self-propelled traveling carriage having a width dimension smaller than the distance between the wheels of a four-wheel cart is provided on the traveling carriage.
At the front and rear ends, there is an inclined portion where the tip can enter between the bottom surface of the pallet at the bottom of the four-wheel cart and the floor surface, and each wheel of the four-wheel cart has a floor surface between the front and rear inclined portions. An endless retracting belt is stretched through a guide member provided on the traveling carriage so as to have a horizontal portion capable of accommodating a four-wheel cart at a height away from the traveling carriage, and the retracting belt is loaded on the traveling carriage. A truck transfer device for a four-wheel cart, characterized in that it can be driven by a drive device.