JPH0353972Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a transport vehicle that transports large approximately cylindrical containers made of synthetic resin, metal plates, etc. one by one.

(Prior art and its problems) A conventional transport vehicle that transports cylindrical hard containers such as drums one by one has a body support device that supports the body of the container under pressure on an elevating frame provided on a truck; Alternatively, a clamping device is provided to clamp the upper edge of the container,
Hold the container under pressure or hold the upper end of the container with a clamp device to lift the container from the floor,
Move it to the desired location.

However, when the container 9 is made of synthetic resin, the rigidity of the container is low, so that the container may be deformed by the clamping force of the body support device 5, or when the container is lifted by grasping the upper end with a clamp device. Problems such as the gripped portion being unable to withstand the weight of the container and its contents resulted in damage, and the above-mentioned transport vehicle could not be used.

(Means for Solving the Problems) In view of the above, the present invention clarifies a transport vehicle that can easily transport even containers with low rigidity.

Also in the present invention, the trunk support device 5 of the carrier has arms 36, 36 protruding from the lift frame 3 provided on the truck 1 so as to hold the container 9 therein.
A pair of support members 4, 4 are rotatably supported in a substantially horizontal plane at the tips of the arm 36.
Alternatively, the trolley 1 is provided with a stopper 35 that determines the range of rotation of the support members 4, 4, and when the support members 4, 4 are maximally inserted between the arms 36, 36, the receiving portion 41 is moved along the circumferential surface of the container. It is characterized in that it is located on a circle C, and the center P of the virtual circle is located inside a straight line L connecting the pivots 38 of the support members 4, 4.

(Operations and Effects) As shown in FIG. 5, the container 9 has a tapered portion 92 in its lower part that gradually reduces in diameter.

Lower the lifting frame 3, push the cart 1 toward the container 9 with both supporting members 4, 4 open outward, put the tips of both supporting members 4 against the lower part of the container, and then open the supporting members 4, 4. is allowed to naturally rotate inside the arms 36, 36.

As the support members 4, 4 rotate, the receiving portion 41 on the support member 4 gradually follows the lower peripheral surface of the container 9. When the supporting members 4, 4 swing inward to the maximum, the receiving member 4 follows the circumferential surface of the container, and the center of the virtual circle C passing through the receiving portion 41 is a straight line L connecting the pivots 38, 38 of the supporting members 4, 4. Therefore, the axis of the container, that is, the center of gravity, is also located inside the straight line.

When the lifting frame 3 is raised, the tapered part 9 at the bottom of the container
2, the weight of the container is applied to the support members 4, 4, but as mentioned above, the center of gravity of the container is inside the straight line L connecting the pivots 38, 38 of the support members 4, 4. Since the supporting member 4 is located at 1, the supporting member 4 does not rotate to the outside of the arms 36, 36.

The reason for this is that when the container 9 is held by the support members 4, 4, the center of gravity of the container 9 is located inside the straight line L connecting the pivots 38, 38 of the support members 4, 4. , 4 to the outside is greater than the force R2 that pushes them inward.

If the center of gravity of the container is located on the straight line L connecting the pivots 38, 38 of both supporting members 4, 4, then the center of gravity of the container is located on the straight line L.
The load acts equally on the front and rear sides of the carrier, and vibrations during transportation easily rotate the supporting members 4, 4 to the outside of the carrier, opening the container, which is dangerous.

Further, the supporting members 4, 4 enter the space between the arms 36, 36 to the maximum and do not rotate inward any further, and the supporting members 4, 4 rise while holding the container 9.

When the container rises from the floor, the cart 1 can be moved.

Next, the lifting frame 3 is lowered, the container is lowered to the floor, and when the trolley 1 is pulled in the direction of separating it from the container, the supporting members 4, 4 are pushed by the container and open outward, and the container is moved between the arms 36, 36. It can be removed from

As mentioned above, the container is not compressed by the support members 4, 4, but the container is fitted between the support members 4, 4 and floats off the floor. Even if the container is made of resin, it can be lifted without significantly deforming the container.

In addition, when the support members 4, 4 are lifting the container, the center of gravity of the container is aligned with the pivot shafts 38, 3 of the support members 4, 4.
The purpose can be achieved by a simple structure in which the supporting members 4, 4 are pivoted so as to be positioned inside between the arms 36 with respect to the straight line L connecting the points 8 and 8.

(Example) Fig. 1 shows a container transport vehicle, and Fig. 5 shows a container.

Container 9 is made of synthetic resin and has a height of approximately 100 cm and a diameter of approximately 50 cm.
The container 9 is formed into a cylindrical shape with a diameter of 1 cm, and the lower part gradually reduces in diameter to form a tapered part 92, and a short upward circumferential wall 91 protrudes from the upper edge of the container 9.

The transport vehicle has an elevating frame 3 on the trolley 1, and the elevating frame 3
A pair of support members 4, 4 are pivotally supported in a substantially horizontal plane.

The truck 1 has a mounting base 13 protruding from the center of a U-shaped frame 11, and wheels 14, 14 are provided at both ends of the mounting base 13 and the U-shaped frame 11.

A hollow vertical column 12 is provided protrudingly on the mounting base 13,
A hydraulic cylinder 21 is disposed within the vertical column 12 so that a piston rod 23 protrudes from the upper end of the vertical column 12, and a foot-operated hydraulic pump 22 is installed on a mounting base 13.
is connected to the cylinder 21 to constitute the lifting drive device 2.

A short pin 24 is fixed to the protruding end of the piston rod 23, and a pair of lifting plates 33, 33 are pivoted downward at both ends of the pin 24 with the vertical column 12 in between.

A lifting frame 3 is slidably disposed on the vertical column 12, and the lower ends of the lifting plates 33, 33 are pivotally connected to the lifting frame 3.

A body support device 5 for the container 9 is provided at the lower part of the lifting frame 3, and a receiving plate 31 is provided at the front of the lifting frame 3 to prevent the container 9 from falling backward.

The trunk support device 5 has a U-shaped support frame 32 which is fitted in the U-shaped frame 11 of the trolley 1 and projects horizontally, and has arms 36, 36 on both sides of the support frame 32 that sandwich the container 9 therebetween. Support members 4, 4 are pivotally supported at the tips of 36, 36 so as to be rotatable within a substantially horizontal plane.

In the embodiment, the support member 4 is pivoted so as to rotate slightly downward into the support frame 32.

Each support member 4, 4 is attached to a lower tapered portion 92 of the container 9.
It is formed by curving a tube or plate material with a length of a little less than 1/3 of the outer circumference of the container in accordance with the curvature of the tapered part, with the recessed sides facing each other, and the entire length of the recessed side is the container. It serves as a receiving part 41 for.

A plate piece 42 is provided at the center of the support member 4 and protrudes outward, and is rotatably fitted onto a pivot 38 provided at the tip of the arm 36.

A spring 34 is connected to the support member 4 to bias the member 4 in the outward rotation direction. Although the spring 34 has sufficient force to bias the support member 4 outward, it does not have the force to push the container forward when the container 9 is held between the support members 4 as described later.

A support member stopper 35 is provided at the tip of the arm 36 for abutting against the plate piece 42 of the support member 4 to restrict the range of outward rotation of the support member 4.

As shown in FIG. 2, when both supporting members 4, 4 are in contact with the stopper 35, the distance W between the inner ends of the supporting members 4, 4 is smaller than the minimum diameter of the tapered portion 92 of the container 9.

Abutments 37, 37 are formed on the U-shaped support frame 32 to restrict the range of inward rotation of the support members 4, 4.

The center P of an imaginary circle C passing through the receiving parts 41, 41 of both supporting members 4, 4 in a state where both supporting members 4, 4 are in contact with the abutments 37, 37 is the pivot axis 38, 38 of supporting members 4, 4. It is located inside the straight line L that passes through.

Note that the support members 4, 4 are directly attached to the U-shaped support frame 32.
is placed on the support member 4, by the U-shaped support frame 32.
It can also be used as a hit to restrict the inward rotation of 4.

An upper edge support device 8 is provided at the upper end of the vertical column 12 of the truck 1 to lock the upper end of the container 9 and prevent the container 92 from falling forward.

The upper edge support device 8 has an elevating member 6 formed by bending a metal plate into a U-shape, and is arranged on the vertical column 12 so as to be able to rise and fall, and the force bending pieces 61, 61 of the elevating member 6 are used as lifting plates of the elevating frame 3. Cover 33,33.

A pair of rollers 62, 63 are freely rotatably supported on the bending pieces 61, 61 with the lifting plates 33, 33 sandwiched between the front and rear, and one pivot of the left and right rear rollers 63 is extended to form a stopper 65 for the lifting member. The stopper 65 is applied to the upper surface of the vertical column 12 to prevent the elevating member 6 from falling.

A front roller 62 provided between the bent pieces 61, 61,
62 is attached at a lower position than the other rear roller 63.

The center of gravity of the lifting member 6 is located in front of the width center of the lifting plate 33, and therefore the front and rear rollers 62, 63
is always in contact with the lifting plate 33.

Swing prevention members 64, 64 are provided on the inner surface of the bent piece 61 above the front roller 62 and below the rear roller 63.
will be provided. The rocking prevention members 64, 64 are the third
In the figure, when an upward force is applied to the front part of the lifting member 6, it engages with the lifting plate 33 in the biting direction and moves up and down together with the lifting plate 33.

A hook member 7 formed by bending a metal rod into an inverted L shape is arranged at the center of the front surface of the lifting frame 3 so that its height can be adjusted by a clamp device 71. A downward claw piece 72 is formed.

Then, with the lifting frame 3 lowered, the cart 1 is pushed toward the container 9, the tips of both supporting members 4 are placed on the lower part of the container, and the supporting members 4, 4 are moved against the spring 34 by the arm 36. , 36.

As the support members 4, 4 rotate, the receiving portion 41 on the support member 4 gradually follows the lower peripheral surface of the container 9.

When the supporting members 4, 4 rotate inward to the maximum, the supporting members 4 follow the circumferential surface of the container, and the center P of the virtual circle C passing through the receiving part 41 is the pivot axis 38 of the supporting members 4, 4.
38, and therefore the axis of the container, ie, the center of gravity, is also inside the line L.

When the piston rod 23 of the hydraulic cylinder 21 is projected upward by stepping on the hydraulic pump 22 and the lifting frame 3 is raised via the lifting plates 33, 33, the receiving part 41 of the support member 4 is attached to the tapered part 92 at the lower part of the container. The weight of the container is supported by the supporting members 4, 4.
However, as mentioned above, the center of gravity of the container is located inside the straight line L, so the support member 4 is attached to the arm 3.
It will not rotate outside of 6,36.

When the container 9 is held by the support members 4, 4, the center of gravity of the container 9 is located inside the straight line L connecting the pivots 38, 38 of the support members 4, 4. This is because the force R2 pushing inward is greater than the force R1 pushing outward.

If the center of gravity of the container is located on the straight line L connecting the pivots 38, 38 of both supporting members 4, 4, then the center of gravity of the container is located on the straight line L.
The load acts equally on the front and rear sides of the carrier, and vibrations during transportation easily rotate the supporting members 4, 4 to the outside of the carrier, opening the container, which is dangerous.

The support members 4, 4 enter between the arms 36, 36 at the maximum and do not rotate inward any further, so that the container rises while being held by the support members 4, 4.

In the embodiment, as described above, the support members 4, 4 rotate inward and slightly downward, so when the container is held by the support members 4, 4, the container tilts slightly backward and the lift frame 3 is tilted slightly. It rises while hitting the contact plate 31.

When the lifting frame 3 starts to rise, even if the lifting plate 33 rises, the lifting member 6 of the upper edge support device 8 is moved by the rollers 62,
63 only rotates in contact with the lifting plate 33, and the height position of the elevating member 6 does not change.

As the container 9 rises, the upper end of the container hits the hook member 7 of the upper edge support device 8, and when an upward force is applied to the front part of the elevating member 6, the swing prevention members 64, 64 of the elevating member 6 are The lifting member 6, the lifting plate 33, and the lifting member 6 move up together by strongly hitting the lifting plate 33 so as to bite into it.

When the container 9 rises from the floor, the cart 1 is pushed to the desired location to move the container.

Even if the trolley 1 tilts back and forth due to unevenness of the floor, the lifting frame 3 is provided with a receiving plate 31 that prevents the container 9 from falling backward, and an upper edge support device is installed inside the upper edge of the container. Since the claw pieces 72 of No. 8 are inserted, there is no risk that the container 9 will fall back and forth.

When the container 9 is moved to a target location and the lifting frame 3 is lowered, the upper edge support device 8 is lowered together with the lifting plate 33 of the frame 3.

While the elevating member 6 is descending, the stopper 65 hits the upper end of the vertical column 12 and gets caught, and the member 6
The lowering of the container stops, but the lifting frame 3 further lowers and the bottom of the container touches the floor.

When the cart 1 is pulled in the direction of separating it from the container while the container 9 is in contact with the floor, the supporting members 4, 4
is opened outward by the force of the spring and being pushed by the container, allowing the container to be removed from between the arms 36, 36.

Containers that can be transported by the transport vehicle of the present invention are not limited to those that have a tapered portion 92 whose lower part is reduced as described above, and as shown by the two-dot chain line in FIG. Support members 4, 4 are attached to the trunk.
It is also possible to carry items that have protruding ribs 93 on which they can be caught.

In carrying out the present invention, as shown in FIG. It can also be used by mounting it on a lift. In this case, the forklift main body becomes the truck 1.

Further, the arms 36, 36 at both ends of the U-shaped frame 32 can be separated and used by directly fitting the arms 36, 36 into the forks of a forklift.

Further, as shown in FIG.
It is also possible to form the receiving part 41 by attaching 1a on the support member 4 along the curvature of the tapered part 92 of the container 9.

Furthermore, the present invention is not limited to the above configuration, and various modifications can be made within the scope of the claims for utility model registration.

[Brief explanation of the drawing]

Fig. 1 is a slope view of the carrier, Fig. 2 is an explanatory diagram of the rotation range of the support member, Fig. 3 is a vertical cross-sectional view of the upper edge support device, Fig. 4 is a cross-sectional view of the same, and Fig. 5 6 is a front view of the container, and FIG. 6 is a plan view showing another embodiment of the receiving portion. 1... Trolley, 3... Elevating frame, 4... Supporting member,
5... Torso support device, 6... Lifting member, 7... Hook member, 8... Upper edge support device.

Claims (1)

[Claims for Utility Model Registration] An elevating frame 3 is provided on the trolley 1, and a body support device 5 for the container 9 is provided on the elevating frame 3. A pair of arms 3 are placed facing forward on the lift frame 3 so as to hold the
The arms 36, 36 are provided oppositely and projectingly.
A pair of support members 4, 4 are rotatably supported in a substantially horizontal plane at the tips of the container 9.
The receiving portion 41 is formed along the curvature of the body of the
The arm 36 or the truck 1 is provided with a stopper 35 that determines the range of rotation of the support members 4, 4, and when the support members 4, 4 are fully inserted between the arms 36, 36, the receiving portion 41 is placed on the circumference of the container. A container transport vehicle characterized in that it is located on an imaginary plane C along which the imaginary circle C extends, and that the center P of the imaginary circle C is located inside a straight line L passing through the pivots 38, 38 of the supporting members 4, 4. The container transport vehicle according to claim 1, wherein the truck 1 is the main body of a forklift. The supporting members 4, 4 are formed by bending a tube or a plate material along the curvature of the body of the container, and the concave side surface of the supporting member serves as a receiving portion 41 over the entire length. A vehicle for transporting containers according to either of Item 1 or Item 2. Utility model registration claim 1 or 2, in which a plurality of plate pieces 41a are attached to the supporting members 4, 4 along the circumferential surface of the container 9 to form the receiving part 41.
A transport vehicle described in any of the paragraphs.