JP2007119187A - Drum can gripping machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stably carry a drum can. <P>SOLUTION: This drum can gripping machine comprises: a mounting frame 2 vertically installed on a base 1; a swing frame 12 swingably pivoted on the mounting frame in plan view; two upper and lower swing rods 13, 14 of which one ends are pivoted on the swing frame and the other end is pivoted on a loosely moving frame; upper and lower claws 32, 35 installed on the loosely moving frame and holding the ear part 25 of the drum can 19; a guide 6 projecting from the front surface of the loosely moving frame and having a drum container storage recess 5; a side plate 50 projecting to the rear face side of the loosely moving frame and having a contact part 50a at the end; a vertical flat surface guide plate 40 installed on the front face of the mounting frame to face the side plate and having a receiving surface; and a drum can retaining recess 9 formed in the front face of the base. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a drum can gripping machine that is used in a forklift or a carriage for transporting drums.

When a drum can is transported using a forklift, the drum can is difficult to grasp, and a drum can gripping machine is attached to the forklift to sandwich the drum can.
A conventional drum can gripping machine is configured as follows (see, for example, Patent Document 1).

  A mounting frame erected on a base provided on the forklift or the carriage toward the front; a gripping part for gripping a drum can provided on the mounting frame so as to be swingable in a plan view direction; A guide provided at the front portion of the grip portion and having a recess 5 that opens forward and accommodates the side wall of the drum can; at a position lower than the guide, on a mounting portion provided on the mounting frame; An arm that is pivotally attached to a slanting downward direction; a concave receiving portion that opens forward and accommodates the lower side wall of the drum can provided at the tip of the arm; Drum can gripper comprising a drum can receiver

Japanese Patent No. 2879673

  In the conventional example, an arm is pivotally attached to the attachment portion of the attachment frame, and a concave receiving portion that opens forward to accommodate the lower side wall of the drum can is provided at the tip of the arm. When the direction is changed suddenly while the drum can is suspended, the drum receiving portion rotates and the drum can moves, so that the drum can becomes unstable.

  In view of the above circumstances, an object of the present invention is to enable a drum can to be stably conveyed.

  The present inventor considered that there is a cause of the problem in the conventional example that the drum receiving part can move freely, so that the receiving part should be fixed to the mounting frame, and a research experiment was conducted. It was. As a result, it was found that the following should be done.

  A vertical flat guide plate is provided on the mounting frame, a horizontal plate facing the flat guide plate is provided on the floating frame, and when the drum can is suspended, the corner of the contact portion of the horizontal plate is the receiving surface of the vertical flat guide plate. The horizontal plate is displaced in the horizontal direction so that the abutting portion of the horizontal plate comes into contact with the flat guide plate over its entire length so that the horizontal plate does not move. The present invention has been made based on the above findings.

  The present invention includes a mounting frame erected on a base, a swing frame pivotally mounted on the mounting frame so as to be swingable in a plan view, one end pivotally mounted on the swing frame, and the other end a floating frame. The upper and lower two swinging rods are attached to the upper and lower claws, and the upper and lower claws are provided on the floating frame so as to sandwich the ears of the drum can. A guide, a horizontal plate projecting on the rear surface side of the floating frame and having a contact portion formed at a tip thereof, and a vertical plane guide provided on the front surface of the mounting frame facing the horizontal plate and having a receiving surface And a board.

  The present invention includes a mounting frame erected on a base, a swing frame pivotally mounted on the mounting frame so as to be swingable in a plan view, one end pivotally mounted on the swing frame, and the other end a floating frame. The upper and lower two swinging rods are attached to the upper and lower claws, and the upper and lower claws are provided on the floating frame so as to sandwich the ears of the drum can. A guide, a horizontal plate projecting on the rear surface side of the floating frame and having a contact portion formed at a tip thereof, and a vertical plane guide provided on the front surface of the mounting frame facing the horizontal plate and having a receiving surface It is characterized by comprising a plate and a drum can holding recess provided on the front surface of the base.

  The present invention is characterized in that spring means for pushing up the floating frame is provided. The spring means of the present invention is a gas spring. One end of the gas spring is rotatably supported by the lower end portion of the floating frame, and the other end is freely rotatable by a support frame protruding from the rear side of the mounting frame. It is characterized by being supported. The horizontal plate of this invention is provided in the downward side of a guide, It is characterized by the above-mentioned. The horizontal plate of this invention is a square or trapezoid flat plate. A guide is provided at the front end of the horizontal plate of the present invention, and the guide is a pair of arcuate members provided at intervals at the front end of the horizontal plate.

  Since the present invention is configured as described above, the swing of the floating frame is restricted when the contact portion of the swinging horizontal plate contacts the vertical flat guide plate over its entire length. Therefore, the drum can is located on the apparatus reference center line and maintains a stable state. Therefore, even if the forklift suddenly changes direction, the suspended drum can does not swing. Moreover, if the lower part side of a drum can is accommodated in the drum can press recessed part of a base, rocking | fluctuation of a drum can can be prevented reliably.

An embodiment of the present invention will be described with reference to FIGS.
The base 1 includes a pair of left and right sheath bodies 1 a and 1 b and an attachment frame 2 connected to a reinforcing frame 23. A drum can holding recess 9 is provided on the front surface of the base 1. A vertical flat guide plate 40 is provided at an intermediate portion of the front surface 2 a of the mounting frame 2. The guide plate 40 is a rectangular plate whose surface is a receiving surface, but this shape is appropriately selected as necessary, and is formed in a trapezoidal shape, for example.

  A swing frame 12 is connected to the front surface 2 a of the mounting frame 2 via a support fitting 7. The swing frame 12 is pivotally mounted 3 above the vertical horizontal guide plate 40 and can be rotated in the direction of arrow A12 (horizontal direction). A stopper 12 a that restricts the rise of the floating frame 15 is provided at the upper end of the swing frame 12.

  On both sides of the swing frame 12, swing rods 13 and 14 are pivotally attached 13a and 14a. The swing rods 13 and 14 are a pair of upper and lower parallel links, and the other ends thereof are pivotally attached 13 b and 14 b to the floating frame 15 to constitute a quadrilateral link 16.

  The floating frame 15 is provided with an upper claw 35 and a lower claw 31 that sandwich the ear portion 25 of the drum can 19. The upper claw 35 is provided at the tip of the upper link 30 that is pivotally mounted 13b on the swinging rod 13. The lower claw 32 is pivotally mounted 33a on the upper link 30 and the other end is pivoted on the swinging rod 14. It is fixed to the link 33 that is pivotally attached 14b. The upper link 30, the lower link 35, and the link 33 constitute a quadrilateral link 34. A spring 37 is provided between the floating frame 15 and the upper claw 35.

  A guide 6 is provided below the lower pawl 32 of the idle frame 15. The guide 6 is composed of a pair of guide pieces projecting in a C shape on the left and right side walls of the floating frame 15, and its tip is formed in an arc shape so as not to damage the drum can. . A space surrounded by the guide 6 is a drum can storage recess 5. The length, shape, and the like of the guide piece are appropriately selected as necessary. For example, an arc-shaped member that is provided at a distance from the tip of the horizontal plate 50 is employed.

  A horizontal plate 50 is provided below the guide 6 of the idle frame 15 so as to face the vertical flat guide plate 40. The horizontal plate 50 is a rectangular plate that protrudes toward the rear surface of the floating frame 15 and has a contact portion 50a at the tip. The shape of the horizontal plate 50 is appropriately selected as necessary. For example, a trapezoidal horizontal plate may be adopted.

  The contact portion 50a of the horizontal plate 50 is separated from the vertical flat guide plate 40 by a reference interval M in a state where the drum can is not suspended, that is, in a no-load state. In the stable design state, the corresponding contact portion 50a is in contact with the receiving surface of the guide plate 40 over its entire length, thereby restricting the rotation of the drum can.

  One end of a gas spring 60 is rotatably supported via a spherical bearing 61 below the horizontal plate 50 of the floating frame 15, and the other end of the spring 60 is supported by a support frame 55 via a spherical bearing 62. And is rotatably supported. The gas spring 60 pushes up the floating frame 15 forward, and positions the floating frame 15 on the apparatus reference center line X1 of the mounting frame 2. Here, the apparatus reference center line X1 refers to a straight line connecting the centers of the mounting frame 2, the swing frame 12, and the idle frame 15 in a series state in a no-load state.

Next, the operation of this embodiment will be described.
After the fork 18a of the forklift 18 is inserted into the sheath body 1a, 1b of the drum can gripping machine and fixed with the chain 22, the fork 18a is raised to a predetermined height and travels toward the target drum can 19, and the guide 6 is moved to the drum can. The outer periphery of the drum can 19 and the lower claw 32 are brought into contact with the side wall 19 s of the 19.

  Further, the forklift 18 is slightly advanced so that the swing rods 13 and 14 swing in the directions of arrows A13 and A14 against the springs 36 and 37, and the distance 19a between the drum can 19 and the swing frame 12 is shown in FIG. It narrows like the space | interval 19b, The forklift 18 is stopped in the position. At this time, the lower pawl 32 is always pressed against the drum 19 by the elasticity of the gas spring 60.

  When the fork 18a is raised in this state and the attachment frame 2 is raised, the lower pawl 32 first rises while sliding along the outer periphery of the drum can 19, hits the lower end of the ear 25, and stops here. And the shaft-attached portion 33a integrated therewith also stop.

  Further, when the fork 18a is raised and the mounting frame 2 is raised, the upper link 30 is rotated in the direction of arrow A33 about the axis attachment portion 33a that is stopped. At this time, the spring 37 is extended, and the upper claw 35 reaches the inside of the ear 25 so as to hold the upper end of the ear 25 of the drum 19, and here, the base of the ear 25 is jointed with the lower claw 32. grab.

  In this state, the upper link 30 stops rotating in the direction of the arrow A33, the clamping force between the upper claw 35 and the lower claw 32 gradually increases, and the ear portion 25 is securely gripped. When the upward force acting on the drum 2 becomes larger than the weight of the drum 19, the drum 19 is completely suspended away from the mounting surface 38 and stored in the drum storage recess 5 as shown in FIG. The position is regulated by the collision with the vertical flat guide plate 40. Therefore, the center O of the drum can 19A is automatically positioned on the apparatus reference center line X1.

  At this time, the abutting portion 50a of the horizontal plate 50 contacts the vertical flat guide plate 40 over the entire length thereof, so that the horizontal swing of the drum can 19 is prevented. Since the lower side of the drum can 19 is accommodated in the drum can holding recess 9 of the base 1, the drum can 19 is eventually restricted by the guide 6, the horizontal plate 50, and the drum can holding recess 9.

  The principle of automatically swinging the drum can 19 on the apparatus reference center line X1 will be described with reference to FIG. When the swing angle of the floating frame 15 in plan view is the apparatus reference center line X1 and θ, the swing direction by the swing rods 13 and 14 is on the straight line X2.

  Therefore, the floating frame 15 moves on the X2 line by the weight of the drum. At this time, if the horizontal plate 50 having a distance between both corners p1 and p2 of the contact portion 50a of the horizontal plate 50 hits the vertical flat guide plate 40 at the corner p1, it receives a force in the direction of the arrow A50. The corners p1 and p2 are stabilized in a state where the guide plates 40 are in contact with each other while clockwise rotating around the axis of the viewing direction swing frame 12. Therefore, when the swing angle θ = 0, the drum can 19 is positioned on the apparatus reference center line X1 and swings toward the center of the mounting frame 2 if the perpendicular distances from the guide plate 40 of both corners p1 and p2 are equal. Will be moved.

  Since the length L of the floating frame 15 from the shaft attachment portion 3 to the front can be made relatively long, the optimum gripping portion 27 as shown in FIG. The width between the front end of the diameter parallel to the traveling direction of the forklift 18 and the separation grip 28 can be increased, and the operation can be facilitated accordingly.

  Further, since the rocking angle θ in the plan view direction is small and the amount of back-and-forth movement due to the rocking arc motion is small, the separation grip portion 28 does not move backward as the drum can 19 hits the receiving plate.

  Since the gas spring 60 has the shaft-attached portion 3 positioned substantially in the middle thereof and is coupled by spherical joints 61 and 62 on the center lines of the floating frame 15 and the mounting frame 2, the gas spring 60 attaches the drum can 19 to the gas spring 60. It has an auxiliary role of swinging to the center of the mounting frame 2. A push spring may be used instead of the gas spring 60.

  After the drum can 19 is suspended, the forklift 18 is moved, the drum can 19 is moved to a predetermined position, the mounting frame 2 is lowered, and the drum can 19 is first placed on the mounting surface 38. As a result, the weight of the drum 19 acting downward with respect to the lower claw 32 gradually decreases, and the entire weight of the drum 19 is completely placed on the placement surface 38 and at the same time between the upper claw 35 and the lower claw 32. The clamping force acting on the slab also becomes zero.

  If the mounting frame 2 is further lowered, the lower claw 32 remains hooked on the ear portion 25, and the upper claw 35 is moved in the direction opposite to the arrow A33 direction around the shaft attachment portion 33a by the elasticity of the spring 37. The upper claw 35 and the lower claw 32 are rotated so as to be separated from each other in the state shown in FIG. 4, and then the lower claw 32 is slightly lowered from the ear portion 25. .

It is a front view showing an embodiment of the present invention. It is a top view which shows embodiment of this invention. It is a side view showing an embodiment of the present invention. It is a front view which shows an operation state. It is a top view which shows an operation state. It is a figure which shows an operation principle. It is a perspective view which shows the optimal grip part and actual grip part of a drum can.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base 2 Mounting frame 5 Drum can accommodation recessed part 6 Guide 9 Drum can holding | suppressing recessed part 12 Swing frame 13 Swing rod 14 Swing rod 15 Floating frame 18 Forklift 19 Drum can 40 Vertical plane guide plate 50 Horizontal plate G Drum can gripping machine

Claims (7)

A mounting frame erected on the base;
A swing frame pivotally attached to the mounting frame so as to be swingable in a plan view direction;
Two upper and lower shafts, one end of which is pivotally attached to the swing frame and the other end is pivotally attached to the floating frame,
Upper and lower claws provided on the floating frame and sandwiching the ears of the drum can;
A guide protruding from the front side of the floating frame and having a drum can receiving recess;
A lateral plate protruding on the rear side of the floating frame and having a contact portion formed at the tip;
A vertical flat guide plate provided on the front surface of the mounting frame opposite to the horizontal plate and having a receiving surface;
A drum can gripping machine characterized by comprising: A mounting frame erected on the base;
A swing frame pivotally attached to the mounting frame so as to be swingable in a plan view direction;
Two upper and lower shafts, one end of which is pivotally attached to the swing frame and the other end is pivotally attached to the floating frame,
Upper and lower claws provided on the floating frame and sandwiching the ears of the drum can;
A guide protruding from the front side of the floating frame and having a drum can receiving recess;
A lateral plate protruding on the rear side of the floating frame and having a contact portion formed at the tip;
A vertical flat guide plate provided on the front surface of the mounting frame opposite to the horizontal plate and having a receiving surface;
A drum can holding recess provided on the front surface of the base;
A drum can gripping machine characterized by comprising:   3. The drum can gripping machine according to claim 1, further comprising spring means for pushing up the floating frame.   The spring means is a gas spring, and one end of the gas spring is rotatably supported by the lower end portion of the floating frame, and the other end is rotatably supported by a support frame protruding from the rear side of the mounting frame. 4. The drum can gripping machine according to claim 3, wherein   3. The drum can gripping machine according to claim 1, wherein the horizontal plate is provided on a lower side of the guide.   3. The drum can gripping machine according to claim 1, wherein the horizontal plate is a rectangular or trapezoidal flat plate.   The drum can gripping machine according to claim 1 or 2, wherein a guide is provided at a front end of the horizontal plate, and the guides are a pair of arcuate members provided at a distance from the front end of the horizontal plate.

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