JP2008110642A - Drum can transporter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To certainly embrace/fixed a drum can by a rotation holder when the drum can is turned. <P>SOLUTION: An opening/closing interlocking mechanism for rotating bent parts 48b, 48b of the rotation holders 48, 48 in an opposite direction each other is pivotally mounted to a fixed plate 65 of a vertical frame 30, and is provided with a release lever 67 having an engagement part 68 on its one end and a connection end 67L provided on the other end; rotation levers 52, 52 provided on rear ends of the rotation shafts 48a, 48a of the both rotation holders 48, 48; and a link bonding means for connecting the connection end 67L of the release lever 67 to both rotation levers 52, 52. When a lateral frame 11 is rotated and the engagement part 68 of the release lever 67 is abutted on a standing limitation stopper 60 of a horizontal support frame 9, the connection end 67L is displaced to rotate the rotation lever 52 in an opposite direction each other. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a drum can transporting vehicle that performs handling such as lifting, moving, rotating, and discharging a drum can containing various industrial raw materials such as chemicals or cutting wastes and waste liquid placed on the floor. Is.

As a conventional drum can transportation vehicle, there is the following (for example, see Patent Document 1).
A gripper composed of an upper jaw and a lower jaw for grasping and lifting the upper end of the drum can is provided at the upper part of the rigid frame, and a lower plate of the rigid frame is in contact with the lower rear surface of the drum can and the lower front of the drum can is held. A pair of left and right bearing cylinders fitted to the rotating shaft of the rotating holder that forms the rotating shaft near the distal end and the rotating shaft near the proximal end, respectively. Drum can transporter that holds or opens the door.

  In this drum can transporter, when holding the drum standing upright on the ground, the bent portions near the tips of both rotary holders are set upward to open the front of the transport vehicle. Next, the transport is moved toward the drum, and the drum is pushed between the pair of left and right rotating holders until the contact plate contacts the rear side of the drum.

  Subsequently, both rotary holders are each rotated 90 degrees from the upward direction to the inward direction, and the front side surface of the lower portion of the drum can is held. The upper and lower jaws of the gripper are hung on the upper and lower edges of the upper ear of the drum, and the gripper handle is rotated in this state, and the ear is firmly tightened between the upper and lower jaws.

Registered Utility Model No. 2552772

  In the conventional example, a pair of left and right rotating holders are connected by an interlocking mechanism for rotating in opposite directions, a manual operation lever is provided in the interlocking mechanism, and an operator manually operates the operation lever so that the rotation holder Open and close.

  For this reason, if an operator inadvertently forgets to operate the operation lever, the drum holder becomes unstable because the rotating holder does not carry the drum can. In this state, even if the rotary handle is turned to rotate the horizontal frame, the drum can begins to move away from the contact plate at approximately 30 degrees, so the drum can not be tilted, so the contents cannot be poured out. . Moreover, since the drum can is unstable, it is very dangerous.

  In view of the above circumstances, an object of the present invention is to make it possible to securely hold and fix a drum can with a rotating holder when the drum can is rotated.

  The present invention relates to a horizontal support frame provided on a carriage so as to be movable up and down, a horizontal frame having a base end pivotally attached to a distal end portion of the horizontal support frame, and a vertical frame fixed to a free end portion of the horizontal frame. A gripping means provided at the upper part of the vertical frame, a contact plate provided at the lower end of the vertical frame and contacting the lower rear surface of the drum can, and a pair of left and right bearing cylinders provided at the lower part of the vertical frame A pair of left and right rotating holders that are formed near the base end and formed with a bent portion for holding the lower front surface of the drum can. A holding device for a drum can comprising: an opening / closing interlocking mechanism for rotating a bent portion of the rotating holder in opposite directions; and the opening / closing interlocking mechanism is fixed to the vertical frame or the horizontal frame. A release lever provided with a locking portion at one end and a connecting end at the other end; A rotary lever provided at the rear end of the rotary shaft of the rotary holder, and a link coupling means for connecting the connecting end of the release lever and the rotary lever. When the locking portion of the release lever comes into contact with the upright limit stopper of the horizontal support frame, the connecting end is displaced to rotate the rotating levers in opposite directions.

  The link coupling means of the present invention is fixed to the lower part of a vertical frame, a horizontal support frame that holds the two bearing cylinders, and a fixed-side coupling that is fixed to a link mounting plate that is erected on the horizontal support frame A link, a rotary connecting rod having one end axially attached to the vertical frame side of the fixed side coupling link and the other end axially attached to the release lever, and a connecting rod for rotatably connecting the both rotary levers And a moving-side coupling link having one end pivotally attached to the other end of the fixed-side coupling link and the other end pivotally attached to the rotating lever.

  The link mounting plate according to the present invention includes a link stopper for restricting rotation of the fixed side coupling link. A link spring means is provided between the fulcrum shaft and the connecting end of the release lever of the present invention to bias the connecting end side in the direction of pulling up. The connecting rod according to the present invention is characterized in that it is connected to the rotating lever in the form of a hook in order to rotate the rotating holders in opposite directions.

  Since the present invention is configured as described above, the opening / closing interlock mechanism operates in conjunction with the rotation of the horizontal frame to open and close the rotating holder. Therefore, unlike the conventional example, when the drum can be rotated, it can be surely held and fixed by the rotating holder, so that the contents can be poured out safely and reliably.

  In order to solve the above problems, the present inventor rotates the rotary handle to rotate the horizontal frame, rather than taking measures to prevent the operator from forgetting to operate the operation lever of the open / close interlock mechanism. We thought that it would be better to develop a mechanism that automatically opens and closes in conjunction with the rotating holder.

As a result, although details will be described later, it has been found that the drum can transport vehicle may be configured as follows. That is,
A horizontal support frame provided on the carriage so as to be movable up and down; a horizontal frame whose base end is pivotally attached to a distal end portion of the horizontal support frame; a vertical frame fixed to a free end of the horizontal frame; A gripping means provided at the upper part of the frame, a contact plate provided at the lower end of the vertical frame and contacting the lower rear surface of the drum can, and a pair of left and right provided at the lower part of the vertical frame are held by a bearing cylinder. A pair of left and right rotating holders formed with a rotating shaft held by a bearing cylinder near the base end and a bent portion for holding the lower front surface of the drum can near the tip An opening / closing interlocking mechanism for rotating the bent portions of the rotating holder in opposite directions; and the opening / closing interlocking mechanism is pivotally fixed to the fixing plate of the vertical frame and is attached to one end thereof. A release lever provided with a locking portion and a connecting end at the other end, and the both rotating holders A rotation lever provided at a rear end of the rotation shaft, and a link coupling means for connecting the connection end of the release lever and the both rotation levers, and the horizontal frame rotates to lock the release lever When the portion comes into contact with the upright limit stopper of the horizontal support frame, the connecting end is displaced to rotate the rotating levers in opposite directions.

A first embodiment of the present invention will be described with reference to FIGS.
The drum can transport vehicle A includes a U-shaped frame 5 having a fixed wheel 1 and a free wheel 3, a guide frame 7 standing on the frame 5, and a U-shape provided on the guide frame 7 so as to be movable up and down. Horizontal support frame 9, a horizontal frame 11 having a base end portion 11 a pivotally attached to a distal end portion of the horizontal support frame 9, and a rotary handle 12 with a worm speed reducer 12 a provided on the horizontal support frame 9. And.

  The guide flail 7 is provided with a foot-operated jack 13, a pump pedal 15, a guide roller 17, a lowering valve lever 19, a cover 21, a traveling handle 23, a roller chain 25, and a sprocket 27.

  The horizontal frame 11 is formed in a semicircular arc shape, and a vertical frame 30 is fixed in an orthogonal state at a central intersection of the free end portion 11b. At the upper end of the vertical frame 30, there are provided a grip claw 32 composed of a lower claw 32 a and an upper claw 32 b, and a grip handle 35 for operating the grip claw 32.

  A contact plate 39 is provided at the lower part of the vertical frame 30. The abutting plate 39 is a curved plate body positioned below the horizontal frame 11 and abuts and supports the lower rear surface of the drum can D positioned on the vertical frame 30 side.

  As shown in FIG. 5, a horizontal support frame 50 is horizontally provided at the lower portion of the vertical frame 30, and the horizontal support frame 50 is positioned below the contact plate 39. The length of the frame 50 is substantially the same as the diameter of the base end portion (width of the opening end portion) of the horizontal frame 11, and an intermediate portion (the middle in the length direction) is fixed to the vertical frame 30. ing. A pair of left and right bearing cylinders 46, 46 are fixed to both ends of the lateral support frame 50. The bearing cylinders 46, 46 are orthogonal to the front of the lateral support frame 50 and parallel to each other. It is arranged.

  The bearing cylinders 46 and 46 support a pair of left and right rotating holders 48 and 48, and rotating shafts 48 a and 48 a near the base end of the rotating holder 48 are mounted on the bearing cylinders 46 and 46. . A bent portion 48b is provided near the tip of the rotary holder 48. The bent portion 48b is formed at the bottom of the drum can D when the rotary holder 48 is in a closed state (hold) as shown in FIG. It is bent into a shape that can hold the front side.

  As shown in FIG. 5, a pair of substantially triangular rotating levers 52, 52 are fixed to the rear ends of the rotating shafts 48a, 48a. The rotary levers 52 and 52 are fixed with their directions shifted from each other, and the rotary levers 52 and 52 are rotatably connected by a connecting rod 54. The connecting rod 54 opposes the rotary holder 48 to each other. In order to rotate in the direction, they are connected in a so-called stale state.

  That is, as shown in FIG. 5, one end of the connecting rod 54 and the moving side coupling link 56 is pivotally attached to the lower corner of one rotary lever 52, and the other end of the connecting rod 54 is The other rotary lever 52 is pivotally attached to the upper outer corner. Therefore, when the rotation holder 48 is in the open state (unhold), the connecting rod 54 is in an upwardly inclined state (a knocked state) with respect to the lateral support frame 50.

  As shown in FIG. 5, a link mounting plate 58 is provided on the left side of the vertical frame 30 in the drawing of the horizontal support frame 50, and a trapezoidal fixed side coupling link 61 is a fulcrum on the link mounting plate 58. The shaft 61p is rotatably supported. A link stopper 62 for restricting the rotation of the fixed side coupling link 61 protrudes from the mounting plate 58.

  As shown in FIG. 9, the link stopper 62 is engaged with the fixed-side coupling link 61 in a state where the three coupling axes of the fixed-side coupling link 61 and the moving-side coupling link 56 are slightly past a straight line. As shown in FIG. 5, the other end of the moving side coupling link 56 is pivotally attached to the upper corner of the fixed side coupling link 61, and the rotation interlocking rod 63 is disposed on the lower corner thereof. One end is pivotally attached.

  As shown in FIG. 5, a fixed plate 65 is provided on the right side of the central intersection of the vertical frame 30. A release lever 67 is rotatably supported by the fixed plate 65 by a fulcrum shaft 67p. One end (connection end) 67L of the release lever 67 is pivotally attached to the other end of the rotary connection rod 63. The one end 67L extends to the left side of the vertical frame 30, and It is located almost directly above.

  Between one end (connection end) 67L of the release lever 67 and the fulcrum shaft 67p, one end of the connection link 69 is pivotally attached, and the other end of the connection link 69 is pivotally attached to the lower end of the round bar 71. Yes. The round bar 71 is inserted into a spring receiving plate 73 fixed to the vertical frame 30, and a coil spring 75 is inserted between the spring receiving plate 73 and the upper end of the round bar 71. The coil spring 75 is a link spring means that pulls up one end 67L of the release lever 67 and urges the rotary holder 48 in the closing direction, and the spring force is applied by a nut 77 screwed to the upper end of the round bar 71. Can be adjusted.

  As shown in FIG. 5, the other end of the release lever 67 is provided with a locking portion 68 that contacts the upper surface of the upright limit stopper 60. The upright limit stopper 60 is a means for restricting the rotation of the release lever 67. The stopper 60 is an L-shaped plate fixed to the horizontal support frame 9, as shown in FIG. The release lever 67 is provided below the locking portion 68.

  Since the upright limit stopper 60 is provided near the rotation axis of the horizontal support frame 9 in order to avoid interference with the bearing cylinder 46 when the horizontal frame 11 rotates, as shown in FIG. The other end side (locking portion 68 side) of the horizontal frame 11 is bent in the direction of the rotation axis from the tip of the horizontal frame 11 pivoting portion.

Next, the operation of this embodiment will be described.
Lifting drums:
After the rotating holder 48 is fully opened (unfolded), the drum carriage A is moved to the vicinity of the drum D by pushing the traveling handle 23, and the drum D is inserted into the opening of the horizontal frame 11. The height is adjusted so that the position of the gripping claw 32 and the position of the ear of the drum can D are matched.

  After the grip handle 35 is rotated and the ear portion of the drum can D is pinched by the grip claws 32, the pump pedal 15 is stepped on to raise the horizontal frame 11, and the drum can D is lifted away from the floor surface. As shown in FIG. 6, the drum can D is in a vertical state, and the lower rear surface (the vertical frame 30 side) of the body portion is in contact with and supported by the contact plate 39.

  At this time, the bent portion 48b of the rotary holder 48 is opened upward as shown in FIG. 6 (A), and the opening / closing interlock mechanism R has a release lever 67 as shown in FIG. 6 (B). The locking portion 68 at the tip end is locked to the upper surface of the upright stopper 60 of the horizontal support frame 9. The fixed side coupling link 61 is separated from the link stopper 62.

Closing operation of rotating holder:
When the rotary handle 12 is turned in the direction of arrow A12 (counterclockwise) and the horizontal frame 11 is rotated by the rotation angle θ1, the engaging end 68L of the release lever 47 is locked to the upright end stopper 60L. Moves upward, and the rotary connecting link 63 is pulled up. Therefore, the fixed side coupling link 61 rotates in the arrow A56 direction (counterclockwise direction), and the moving side coupling link 56 is pushed down.

  Then, the rotating levers 52 and 52 rotate and the bent portions 48b and 48b of the rotating holder 48 start to fall inside, that is, in the closing direction (see FIGS. 7A and 7B). At this time, both the rotating levers 52, 52 are connected by the connecting rod 54 in a brushed state, so that they rotate at the same time. However, the rotating lever 52 on the fixed side coupling link 61 side rotates in the clockwise direction and the other side. The rotating lever 52 rotates counterclockwise to displace the bent portions 48b and 48b simultaneously in the closing direction.

  Further, when the rotary handle 12 is turned in the direction of arrow A12 (counterclockwise) and the horizontal frame 11 is rotated to the rotation angle θ2, the locking portion 68 of the release lever 47 is locked to the upright limit stopper 60. The connecting end 67L moves further upward, and the rotary connecting link 63 is further lifted. Therefore, the fixed-side coupling link 61 further rotates in the direction of arrow A56 (counterclockwise), and the moving-side coupling link 56 is further pushed down.

  Then, the rotation levers 52 and 52 rotate, and the bent portions 48b and 48b of the rotation holder 48 further fall inward, that is, in the closing direction (see FIGS. 8A and 8B).

  Further, when the rotary handle 12 is turned in the direction of arrow A12 (counterclockwise) and the horizontal frame 11 is rotated to a rotation angle θ3, for example, θ3 = 10 degrees, the locking portion 68 is locked to the upright limit stopper 60. The connection end 67L of the release lever 67 further moves upward, and the rotary connection link 63 is pulled up. Therefore, the fixed side coupling link 61 rotates in the arrow A56 direction (counterclockwise direction), and the moving side coupling link 56 is pushed down.

  Then, the rotation levers 52 and 52 further rotate, and the bent portions 48b and 48b of the rotation holder 48 further fall inward, that is, in the closing direction, and hold the front surface of the drum D (the side opposite to the vertical frame 30) (FIG. 9A). ) And (B)). The front ends of the bent portions 48b and 48b are close to each other and are semicircular as a whole and stop on the front side surface of the drum can D. Therefore, the drum can D is closed by the rotating holder 48 (fully closed state). .

  At this time, as shown in FIG. 9B, the release lever 67 is in an inclined state, and the locking portion 68 is positioned below the support shaft 67p and locked to the upright limit stopper 60, thereby connecting the connection end 67L. Is above the support shaft 67p and applies a closing force to the rotary lever 52. Further, the fixed-side coupling link 61 is locked to the link stopper 62, and even if an external force in the opening direction is artificially applied to the rotation holder 48 in the fully closed state (hold), the fixed-side coupling link 61 Cannot rotate. Therefore, it is possible to prevent the rotating holder 48 from being inadvertently opened. In addition, the rotation holder 48 in the fully open state rotates 90 degrees, and the bent portions 48b and 48b become horizontal and become fully closed.

  As described above, after the drum can D is closed by the rotary holder 48, the rotary handle 12 is further rotated in the direction of arrow A12 to rotate the horizontal frame 11, and the drum can D is tilted by a desired angle to pour out the contents. At this time, the locking portion 68 of the release lever 67 is separated from the upright limit stopper 60. Since the bent portions 48b and 48b of the rotation holder 48 in the fully closed state receive the load of the drum can D, the rotation of the rotation holder 48 is restricted.

Opening operation of rotating holder:
The opening operation of the rotating holder 48 is performed in the reverse manner of the closing operation, which will be briefly described. After the content pouring operation is completed, when the rotary handle 12 is rotated in the direction opposite to the arrow A12 (clockwise) and the horizontal frame 11 is rotated, the locking portion 68 of the release lever 67 is locked to the upright limit stopper 60. The release lever 47 swings in a direction parallel to the horizontal frame 11 against the spring force of the coil spring 75.

  Then, the rotation interlocking rod 63 rotates the fixed side coupling link 61 from the state stopped by the link stopper 62 in the clockwise direction, and the left and right bent portions 48b and 48b of the rotation holder 48 rotate in the opening direction. The rotation angle θ3 of the horizontal frame 11 (vertical frame 30) is about 10 degrees until the rotation holder 48 is rotated 90 degrees from the fully closed state and fully opened.

The embodiment of the present invention is not limited to the above, and may be configured as follows, for example.
(1) The link spring means may be attached not only to the release lever 57 but also to other parts, for example, the rotation lever 52 or the connecting rod 54.

(2) The link stopper 62 is omitted. As described above, the stopper 62 prevents the rotating holder 48 from being opened even when an external force in the opening direction is applied to the rotating holder 48 when the rotating holder is fully closed. In actual work, when the rotary holder 48 is in the fully closed state, the drum weight acts in a direction to maintain the fully closed state, so there is no problem. However, when the weight is relatively light such as an empty drum, the stopper is necessary.
(3) The shape of the fixed side coupling link, the rotation lever, the connecting rod, and the like can be appropriately selected as necessary.

It is a top view which shows 1st Example of this invention. It is a front view of the first embodiment. It is a top view of a horizontal support frame. It is a top view which shows the principal part of a cancellation | release lever. It is an enlarged view of a link coupling means. It is a figure which shows the fully open state of a rotation holder, FIG. 6 (A) is a front view, FIG.6 (B) is an enlarged view of a link mechanism. FIG. 7A is a front view and FIG. 7B is an enlarged view of a link mechanism, showing a process of shifting the rotating holder to a closed state. It is a figure which shows the transition process to the further closed state of a rotation holder, FIG. 8 (A) is a front view, FIG.8 (B) is an enlarged view of a link mechanism. FIG. 9A is a front view of the rotary holder in a fully closed state, and FIG. 9B is an enlarged view of the link mechanism.

Explanation of symbols

DESCRIPTION OF SYMBOLS 9 Horizontal support frame 11 Horizontal frame 12 Rotation handle 30 Vertical frame 39 Contact plate 46 Bearing cylinder 48 Rotation holder 50 Horizontal support frame 52 Rotation lever 54 Connecting rod 56 Moving side coupling link 58 Link mounting plate 60 Upright limit stopper 61 Fixed side coupling link 62 Link stopper 63 Rotating coupling rod 65 Fixed plate 67 Release lever 68 Locking portion 75 Coil spring A Drum can carriage R Link coupling means

Claims (5)

A horizontal support frame provided on the carriage so as to be movable up and down; a horizontal frame whose base end is pivotally attached to a distal end portion of the horizontal support frame; a vertical frame fixed to a free end of the horizontal frame; A gripping means provided at the upper part of the frame, a contact plate provided at the lower end of the vertical frame and contacting the lower rear surface of the drum can, and a pair of left and right provided at the lower part of the vertical frame are held by a bearing cylinder. A pair of left and right rotating holders formed with a rotating shaft held by a bearing cylinder near the base end and a bent portion for holding the lower front surface of the drum can near the tip A drum can holding device comprising: an opening / closing interlocking mechanism for rotating the bent portions of the rotating holder in opposite directions;
The open / close interlocking mechanism is fixed to the vertical frame or the horizontal frame, provided with a locking portion at one end thereof, a release lever provided with a connecting end at the other end, and a rear end of the rotary shaft of the rotary holders. A rotation lever provided; and a link coupling means for coupling the connection end of the release lever and the both rotation levers;
A drum can characterized in that when the horizontal frame rotates and the locking portion of the release lever comes into contact with the upright limit stopper of the horizontal support frame, the connecting end is displaced to rotate the rotating levers in opposite directions. Truck.   The link coupling means is fixed to a lower portion of a vertical frame, and holds a horizontal bearing frame that holds both the bearing cylinders, and a fixed-side coupling link that is fixed to a link mounting plate that is erected on the horizontal support frame, A rotary connecting rod having one end pivotally attached to the vertical frame side of the fixed side coupling link and the other end pivotally attached to the release lever, a connecting rod for rotatably connecting the both rotary levers, and one end The drum can transporting vehicle according to claim 1, further comprising: a movable side coupling link pivotally attached to the other end of the fixed side coupling link and the other end pivotally attached to the rotary lever.   The drum can transporter according to claim 2, wherein the link mounting plate includes a link stopper for restricting rotation of the fixed side coupling link.   4. A drum transporter according to claim 2, wherein a link spring means is provided between the fulcrum shaft of the release lever and the connecting end to urge the connecting end in a direction in which the connecting end is pulled up. .   3. The drum transporter according to claim 2, wherein the connecting rod is connected to the rotating lever in a hooked shape so as to rotate the rotating holders in opposite directions.

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