JP5142595B2 - Drum can gripping device - Google Patents

Description

  The present invention relates to a drum can gripping device that is attached to a forklift, a carriage, or the like and used when carrying drum drums.

The drum can is transported by lifting and transporting the ears slightly formed on the periphery of the upper end of the drum can with the upper and lower claws provided in the drum can lifting device.
In this drum can lifting device such as a forklift, there are a fixed type and (Patent Document 1) swing type (Patent Documents 2 and 3) of the gripping part of the floating frame, but the fixed type is excellent in carrying performance, The swing type is excellent in ease of gripping but has a difficulty in transportability.

Japanese Utility Model Publication No. 55-26398 Japanese Patent No. 2879673 Japanese Patent No. 3455526

  In addition, recent drum cans can be transported stably without damaging the drum can because of the significant decrease in strength due to the reduction in plate thickness due to various circumstances. There is a need for a drum gripping device that has only excellent features.

  The present invention provides a drum can gripping device that is attached as an attachment when it is lifted and transported by a drum can gripping device used for a forklift or the like. It is to eliminate the damage to the drum outer peripheral surface that occurs from the local area of the lower claw and the drum can damage to the grip due to the left and right shaking during transportation.

  If the fixed type is used for a drum can having a small plate thickness, if there is an error in the approach angle of the forklift, the tip of the lower claw may locally contact the drum can and break through the outer peripheral surface of the can.

  In addition, if the swing type is used, it is possible to avoid breaking through the can, but since the swing mechanism is equipped, the drum can easily shake in the left and right direction against the severe operation of the forklift, and the drum can When gripping from inside and outside, there is a risk of damaging and damaging the outer peripheral portion on the outside.

  In order to solve the above-described problem, the present invention is to provide a drum can gripping device that has a simple structure and is safe by providing a lower pawl as a part of the gripping device with a rotation function.

According to the present invention, one end of an upper sliding rod and a lower sliding rod is pivotally attached to a mounting frame standing on a base, and the other end of each of the swinging rods is pivoted to a floating frame located on the front surface of the mounting frame. One end of the upper link and the lower link are respectively pivotally attached to the upper and lower ends of the lower claw link provided on the floating frame, the other end of the upper link is used as the upper sliding rod, and the other end of the lower link is provided. Each of the lower peristaltic shafts is pivotally attached to each other to form a quadrilateral link mechanism with a free frame, a link with a lower claw, an upper link, and a lower link, and an upper claw that is bent downward is provided at the extension of the upper link. A drum can gripping device in which a lower claw opposed to an upper claw is pivotally supported in a horizontal plane of a lower claw support portion of a link with a lower claw, and when gripping an ear portion of the drum can, The lower pawl is in contact with the outer peripheral surface of the drum can and rotates against the lower end of the ear of the drum can. When the upper nail reaches the inside of the ear so as to hold the ear, grabs the base of the ear and lifts the drum can, the upper portion of the drum can The drum can gripping device is characterized in that the rotation is regulated and fixed by the grip force of the drum, and the lower portion of the drum can is accommodated in the lower receiving plate .

In addition, one end of the upper and lower sliding rods is pivotally attached to the mounting frame standing on the base, and the other end of the both swinging rods is pivotally attached to the floating frame located on the front surface of the mounting frame. The upper end portion of the link with the lower pawl provided on the floating frame is pivotally attached to one end of the upper link, and the cam-shaped rear portion formed at the lower portion of the link with the lower pawl restricts the backward movement of the link with the lower pawl. It is supported by the contact part and is formed in a link mechanism consisting of a contact part that regulates the floating frame, the link with the lower claw, the upper link, and the link with the lower claw, and an upper claw bent downward is provided on the extension part of the upper link, Further, the lower claw opposed to the upper claw is a drum can gripping device pivotally supported in a horizontal plane of the lower claw support portion of the link with the lower claw so as to grip the ear portion of the drum can. The lower claw is in contact with the lower end of the ear of the drum can while rotating in contact with the outer peripheral surface of the drum can. When the upper nail reaches the inner side of the ear part so as to hold the ear part, grasps the base part of the ear part, and lifts the drum can, the upper part of the drum can holds the grip of the upper nail The drum can gripping device is characterized in that the rotation is regulated and fixed by force, and the lower portion of the drum can is accommodated in the lower receiving plate .

  Furthermore, the lower claw link has a lower claw integrated with the lower claw support portion, and rotates in a horizontal plane so that the drum can gripping device can be easily copied to the outer peripheral surface of the drum can.

  Also, as the forklift lifts, the lower claw that can rotate in the horizontal plane of the lower claw support part first hits the bottom of the drum can, gradually increasing the acting force of the weight of the drum can, and lowering the upper claw to pinch the drum can This is a drum can gripping device that grips completely for the first time and is prevented from rotating by the upper claws.

  In the present invention, the lower pawl or the link portion supporting the lower pawl is configured to be rotatable as described above, so that the structure is simplified and the number of parts is reduced as compared with the conventional swing type in which the entire grip portion rotates. it can.

  Furthermore, when the upper claw that does not rotate completely grips the drum can, the lower claw, i.e., the drum can be prevented from rotating, unlike the conventional fixed type, unlike the swing type rotation regulating function, It can be used safely because it completely stops the rotation of the drum.

The best mode for carrying out the present invention will be described with reference to FIGS.
1 and 2 are side views showing a use state of the drum can lifting device of the first embodiment of the present invention.
In the figure, the floating frame 2 is supported in a swingable manner by two upper and lower swinging rods 3 and 4 on a mounting frame 1 erected on a base B lifted by a fork 1b of a forklift inserted in a sheath 1a. The base B on which the mounting frame 1 is erected is provided with a lower receiving plate 1 c that accommodates the drum 12 in the center of the mounting frame 1.

The upper link 7 and the lower link 8 are pivoted together with the upper swing rod 3 and the lower swing rod 4 on the floating frame 2 supported by the upper and lower two swing rods 3 and 4 so as to be positioned in front of the mounting frame 1. The link 6 is attached to the other ends of the upper link 7 and the lower link 8 with 6a and 6b.
The link 6 is detachably equipped with a lower claw 5 and a push-up hook 15. The lower claw 5 is pivotally supported by a lower claw support portion 19 provided on the link 6 so as to be rotatable in a horizontal plane. Yes.
Although not shown, the lower claw 5 may be supported by forming an insertion hole in the lower claw 5 pivotally supported by the lower claw support portion 19 and forming an axis on the link 6 side.

The floating frame 2, the link 6, the upper link 7 and the lower link 8 constitute a quadrilateral link mechanism, and an upper claw 9 bent downward at an extension of the upper link 7 is formed integrally with the upper link 7. Then, the upper nail 9 and the lower nail 5 are made to face each other.
Further, a spring 10 is attached between the mounting frame 1 and the floating frame 2 to give elasticity in a direction in which the floating frame 2 is always lifted upward.
Further, a spring 11 is attached between the floating frame 2 and the upper link 7 to give elasticity in a direction in which the upper claw 9 is always opened. In the figure, 12 is a drum, 13 is a mounting surface on which it is placed, and 14 is an ear of the drum.

When the drum can 12 is lifted from the mounting surface 13 as shown in FIG. 1, the fork 1b of the forklift is inserted into the sheath 1a of the base B on which the mounting frame 1 is erected and lifted. The height of the opening is made substantially the same as the height of the ears 14 of the drum can, and proceeds toward the drum 12 in the direction of the arrow AF. First, the outer periphery of the drum can 12 and the lower claw 5 are brought into contact with each other, and further advanced slightly. The rods 3 and 4 are rocked against the elasticity of the spring 10.
At this time, even when there is an error in the angle of approach of the forklift and the lower pawl 5 of the floating frame 2 is not directly facing the drum 12, the lower pawl 5 is pivotally supported by the lower pawl support portion 19 of the link 6, and is within the horizontal plane. Therefore, the outer peripheral surface of the drum can 12 can be easily copied without being in local contact with the outer periphery of the drum can 12.

  At that time, the lower claw 5 is always pressed against the drum 12 by the elasticity of the spring 10. When the mounting frame 1 is raised in the arrow AU direction in this state, the lower claw 5 rises while sliding along the outer periphery of the drum can 12, hits the lower end of the ear 14, and stops here.

  When the mounting frame 1 is further raised, the upper link 7 is lowered in the direction of arrow A6. At that time, the spring 11 is extended, and the upper claw 9 reaches the inside of the ear 14 so as to hold the upper end of the ear 14 of the drum, and here, in common with the lower claw 5, grips the base of the ear.

At that time, if there is an error in the angle of entry of the forklift, the lower claw 5 can follow the outer periphery of the drum can 12, but the upper claw 9 cannot rotate, so that it comes into contact with the inside of the ear 14 as shown in FIG.
However, since two or more plates are structurally overlapped on the inner side of the ear 14, and the bending direction is a bending with respect to the upper nail 9, there is a problem of strength such as the outer peripheral portion. Absent.

When the mounting frame 1 is further lifted from the above grip state, the grip degree of the upper claw 9 advances, and if gripping is performed in the above-mentioned local hit state, the grip force is always as shown in FIG. Since it is in the direction of the arrow AC at the center of the arc of the lower backing plate 1c, a rotational force in the direction of the arrow AL acts on the drum 12 and at the moment of separation from the mounting surface 13, the drum 12 is placed in the lower backing 1c. The lower claws 5 rotate in the direction of the upper claws 9 because they are intended to be accommodated.
When the upper part of the drum can is completely gripped, the upper part of the rotation is completely fixed by the gripping force of the upper claw 9, so that the lower part of the drum can is completely accommodated in the center of the lower receiving plate 1c as shown in FIGS. The drum can rests stably in this position.

FIG. 5 shows a plan sectional view of the link 6 with the lower pawl 5 in the second embodiment of the present invention.
Instead of the lower claw support portion of the first embodiment, two alignment bearings 6A (6B) in which the lower claw 5 is attached to the link 6 and the direction of the arrow BX of the shafts 6a and 6b and the alignment bearing 6A ( 6B) has the same function as that of the first embodiment except that the lower claw 5 rotates integrally with the link 6 by being formed in a structure that can rotate in the direction of the arrow BY around the sphere. In addition, both sides of the aligning bearing 6A (6B) form a rotation space by the width determining rings 6c and 6d.

  FIG. 6 is a side view of the gripping device of the third embodiment. An upper link 70 with an upper claw 90 is pivotally attached to the floating frame 2 together with the swinging rod 3, and the rotation center and the upper claw 90 are connected to each other. A link 60 with a lower claw 50 is pivotally supported by a shaft 67 and is urged by a spring 18 in the lifting direction, abuts against the lower rear portion of the link 60 with the lower claw 50, and the link 60 with a lower claw moves backward. A restricting hitting portion 30 is provided. The lower claw 50 is pivotally supported by the lower claw support portion 21 provided on the link 60 so as to be rotatable in a horizontal plane, but conversely, a hole may be formed in the lower claw 50 and the link 60 may be used as a shaft to serve as a support portion. .

FIG. 7 is a side view of the gripping device portion of the fourth embodiment. The link 60 with the lower pawl 50 and the upper link 70 are configured such that the link 60 with the lower pawl 50 rotates in the vertical plane in the arrow AX direction and the horizontal plane in the arrow AY direction. 7 and 8 is pivotally supported by a pin 70a shown in FIGS. 7 and 8, and a retaining member 61 prevents the link 60 with the lower pawl 50 from falling off.
Since the fourth embodiment has the same function as the aligning bearing 6A (6B) in the second embodiment, the pin 70a may be transformed into the aligning bearing 6A, the shaft 6a and the width determining ring 6c, and vice versa. In addition, the alignment bearings 6A (6B) of the second embodiment can be transformed into pins 70a, respectively.
The operation functions of the apparatus in the third and fourth embodiments are the same as those in the first and second embodiments.

It is a whole side view which shows the use condition of one Example of the drum can gripping apparatus which shows embodiment of this invention. It is a whole side view of a drum can mounting surface detachment state same as the above. It is a top view of the state before the complete grip of the grip part of a drum can gripping apparatus. It is a top view after completion of the complete grip of the grip part of the drum can gripping device. It is a plane sectional view of a grasping device part of the 2nd example of this invention. Side view of the gripping device according to the third embodiment of the present invention. Side view of the gripping device according to the fourth embodiment of the present invention. It is the plane and side view of a pin of an apparatus part same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mounting frame 2 Floating frame 3 Upper sliding rod 4 Lower sliding rod 5 Lower nail 6 Link with lower nail 7 Upper link 8 Lower link 9 Upper nail 6A (6B) Alignment bearing 6a (6b) Shaft 6c (6d) Determining wheel 19 Lower nail support
20 Cam-like back
21 Lower nail support part 30 per part B base

Claims (4)

A mounting frame provided upright on the base, pivotally attached to one end of the upper pivotal lever and a lower pivotal lever, also rotatably attached to the floating frame located the other end of the both much Do杆the front of the mounting frame, the One end of the upper link and the lower link are respectively pivotally attached to the upper and lower ends of the lower claw link provided on the floating frame, the other end of the upper link is the upper sliding rod, and the other end of the lower link is the lower sliding rod. Each frame is pivotally attached to form a quadrilateral link mechanism with a floating frame, a link with a lower claw, an upper link, and a lower link, and an upper claw that is bent downward is provided on the extension of the upper link, and is opposed to the upper claw The lower claw is a drum can gripping device pivotally supported in a horizontal plane of the lower claw support portion of the lower claw link ,
When gripping the ear of the drum can, the lower claw abuts on the outer peripheral surface of the drum can and rotates while contacting the lower end of the ear of the drum can, and the upper claw holds the ear so as to hold the ear. Reach the inside of the ear, grab the base of the ear,
When the drum can is lifted, the upper portion of the drum can is fixed with its rotation restricted by the grip force of the upper claw, and the lower portion of the drum can is accommodated in the lower receiving plate. Drum can gripping device. A mounting frame provided upright on the base, pivotally attached to one end of the upper pivotal lever and a lower pivotal lever, also pivotally attached to the other end of both said rocking Do杆, the floating frame located in front of the mounting frame, the upper end of the link with the lower pawl provided on the free movement frame, per pivotally attached to one end of the upper link, to restrict the retraction of the link with the lower pawl cam-like rear portion formed in the lower portion of the lower pawl with the link portion In addition to forming a link mechanism consisting of a contact part that regulates the floating frame, link with lower pawl, upper link, and link with lower pawl, an upper claw bent downward is provided on the extension of the upper link, A drum can gripping device in which the lower claw facing the upper claw is pivotally supported in a pivotal manner in a horizontal plane of the lower claw support portion of the link with the lower claw ,
When gripping the ear of the drum can, the lower claw abuts on the outer peripheral surface of the drum can and rotates while contacting the lower end of the ear of the drum can, and the upper claw holds the ear so as to hold the ear. Reach the inside of the ear, grab the base of the ear,
When the drum can is lifted, the upper portion of the drum can is fixed with its rotation restricted by the grip force of the upper claw, and the lower portion of the drum can is accommodated in the lower receiving plate. Drum can gripping device. The drum can gripping device according to claim 1 or 2, wherein the lower pawl of the link with the lower pawl is integrated with the lower pawl support portion and rotates in a horizontal plane to reasonably follow the outer peripheral surface of the drum can.   The lower pawl that can rotate in the horizontal plane of the lower pawl support part first hits the drum can as the forklift rises, gradually increasing the weight acting force of the drum can, pulling the upper pawl and starting to pinch the drum can completely The drum can gripping device according to claim 1, wherein the rotation is prevented by an upper claw.

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