JP2007131118A - Drum lorry - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate the limitation of height at which a drum is placed. <P>SOLUTION: A lower supporting means of a drum lorry A comprises a straight line moving shaft 37 built in a vertical frame 30 and capable of sliding; a spring member energizing the straight line moving shaft upward; a semicircular lever 57 journal to a lower side of a journaling portion of a lateral frame of a horizontal supporting frame at a base end portion, and capable of contacting/separating to/from the lateral frame; a rotation interlocking rod 55 coupled to a free end of a releasing lever; an upright limit stopper provided on the horizontal supporting frame, and regulating rotations of the semicircular lever; a hooking piece 51 supported by a rotation fixing shaft 45 at a lower end portion of the vertical frame; and a lower part hook link mechanism R coupling hte rotation interlocking rod, the straight line moving shaft, and the hooking piece, wherein the semicircular lever is separated from the upright limit stopper and the straight line moving shaft moves downward to rotate the hooking piece in a hook-on direction when the lateral frame is normally rotated, and rotating the hooking piece in a hook-off direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a drum can transporting vehicle in which a drum can be clamped and transported to a desired position while being lifted, and then the drum can be tilted to discharge contents.

  When transporting the drum can, the upper support means sandwiches the ear portion of the drum can and conveys it while accommodating the drum portion in the concave receiving plate. The drum must be inverted. Therefore, conventionally, the bottom hook of the drum can is hung and inverted as follows (see, for example, Patent Document 1).

  A tilting post is provided on the carriage so that it can be lifted and tilted in a plane perpendicular to the grounding surface of the carriage. Upper support means for supporting the upper part of the container at the upper end of the tilting post, and lower part for supporting the lower part of the container at the lower end side. In a container transport vehicle provided with support means, the lower support member includes a saddle member slidably disposed in the tilting post, a slide range restricting means for restricting a slide range of the saddle member, and a direct or pivot on the saddle member. A tilting post that includes an abutting portion that is indirectly provided via an arm and that contacts a receiving portion on the carriage to regulate the lowering position of the eaves member and a hanging piece that is disposed at the lower portion of the eaves member and can be hooked from the inside to the lower edge of the container And a link mechanism that rotates the hook piece from the standby position to the bottom side of the container by moving the saddle member relatively downward, and tilts with the container supported by the upper support means Lifting the container strike rises, relatively guidance rod is downward moved with respect to the tilting posts to follow this rise, container truck to the take pieces can support the bottom of the vessel by hooking the container lower edge.

Patent No. 3635054

  The conventional example is a so-called lift interlocking type link mechanism, and the lower part is brought into contact with or separated from the receiving part provided on the carriage and the contact part provided at the tip of the bent piece at the lower end of the flange member 6. Since the hook mechanism is operated to engage and disengage the lower hook, the drum can must be placed at a predetermined height (floor surface). That is, the height at which the drum can be placed is regulated, and if the drum can is placed at a high position other than the floor surface or is placed, the hanging piece cannot be engaged or disengaged.

  In view of the above circumstances, an object of the present invention is to prevent the height of a drum can from being limited.

  The present invention includes 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 of the horizontal frame. A frame, an upper support means provided at the upper end portion of the vertical frame and holding the upper end portion of the drum can, a lower support means provided at the lower end portion of the vertical frame and holding the lower end portion of the drum can, and the horizontal frame In the drum can transport vehicle, the lower support means includes a slidable linear movement shaft built in the vertical frame, and a spring member that urges the linear movement shaft upward. And a release lever that is pivotally attached to a lower end of the horizontal frame, and is connected to and separated from the horizontal frame, and a rotation interlock that is connected to a free end of the release lever. A hook, an upright stopper provided on the horizontal support frame and restricting the rotation of the release lever, and a lower end of the vertical frame A lower hook link mechanism for connecting the hook piece supported by the rotation fixed shaft, the rotation interlocking rod, the linear movement shaft, and the hook piece, and the release lever is erected when the horizontal frame is rotated forward. When the linear movement shaft moves away from the limit stopper and moves downward to rotate the hooking piece in the hook-on direction, and when the horizontally rotated horizontal frame is reversed, the release lever comes into contact with the upright limit stopper and And a lower hook link mechanism that moves the moving shaft upward to rotate the hooking piece in the hook-off direction.

  The lower hook link mechanism according to the present invention is a vertical frame frame-shaped hook that is pivotally attached to the upper part of the rotation fixed shaft, the long side end is pivotally attached to the lower end of the rotation interlocking rod, and the top part is linearly moved. A heel-shaped ridge that is pivotally attached to the lower end portion of the shaft, and an arc-shaped ridge that is pivotally attached to the short side end of the heel-shaped heel and the other end is pivotally attached to the hooking piece. It is characterized by that. The character-like scissors according to the present invention are connected to a linear movement shaft via a connecting scissors. The release lever of the present invention is a lever composed of a parallel bar body and a trapezoidal head, or a semicircular lever.

  Since the present invention is configured as described above, the hooking piece is engaged with and disengaged from the bottom lower edge of the drum can in conjunction with the rotation of the horizontal frame. Therefore, unlike the conventional example, since it is a so-called rotation interlocking hook link mechanism, the height at which the drum can is placed is not limited.

  In order to prevent the height at which the drum can be placed from being restricted, the present inventor, instead of using the lower hook link mechanism as a lift interlocking type, is a rotation interlocking type, that is, the lower hook is connected to the drum can. I thought that it would be better to use a link mechanism that engages and disengages from the bottom edge of the bottom.

  In the lower hook provided with the link mechanism, if a spring force is always applied to the pulling side, an external force is required to release the spring force. When the horizontal frame supporting the drum can is reversed with a rotary handle with a reduction gear, this external force is applied by the release lever hitting the upright limit stopper of the horizontal support rod just before the upright position. Therefore, it is not activated simply by lifting the drum can, and it interlocks with the lower hook in response to the start of rotation.

  More specifically, a quadrilateral link is formed with the lower end of the vertical frame as a fixed piece, and one of them is used as a hook piece. And the spring force of the linear movement mechanism built in the vertical frame is urged to the link facing it via the link, and it is coupled to the rotation interlocking rod on the opposite side across the fixed shaft, Turn the rotation about half a turn or more. In addition, if at least the rotary fixed shaft is positioned further above the lower receiving plate above the lowermost part of the drum can, the hook can actually rotate as the drum can rotate. When receiving a load, it always acts in the pulling direction. This is safe because it matches the direction of action of the spring.

  Since the structure is attached to the rotating part, considering the safety of the operator, the structure is built in and close to the rotating component so as not to protrude from the rotating part. If it does in this way, the external dimension of the whole apparatus will become substantially the same as the conventional one. A simple structure that connects the spring part (drive system), the hook part (operation system) of the square link and the rotation interlocking part (command system meter) with two links, and does not require any other auxiliary mechanism. Improve functional safety and reliability.

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 rail 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 shape, and a vertical frame 30 is fixed to the free end portion 11b in an orthogonal state. 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.

  As shown in FIG. 4, the vertical frame 30 incorporates a linear movement shaft 37. Between the head 37a of the linear movement shaft 37 and the fixed piece 39, the shaft 37 is located upward, that is, an arrow A37. A spring member 40 that biases in the direction is stretched. For example, a coil spring is used as the spring member 40.

  The fixed piece 39 is continuous with the lower end of the vertical frame 30, but a lower receiving plate 42 is provided on the front side, and a fixed shaft 44 and a rotary fixed shaft 45 are spaced apart in the vertical direction on the rear side. Is provided. The fixed shaft 44 is located above the rotation fixed shaft 45, and the rotation fixed shaft 45 is located above the lower receiving plate 42.

  A lower end portion of the linear movement shaft 37 is coupled to the lower hook link mechanism R via a connecting rod 47. As shown in FIG. 3, the lower hook link mechanism R includes a H-shaped rod 49 pivotally attached to the connection rod 47 and an arc-shaped rod 53 pivotally attached to the hook piece 51.

  The central part of the long side of the H-shaped rod 47 is rotatably supported by the fixed shaft 44, the long side end portion is pivotally attached to the lower end portion of the rotation interlocking rod 55, and the short side end portion is arcuate. The rod 53 is pivotally attached to one end portion, and the top portion thereof is pivotally attached to the connection rod 47.

  The rotation interlocking rod 55 is pivotally attached to the free end portion 57 a of the release lever 57. The release lever 57 is, for example, a semicircular lever that is substantially the same shape as the horizontal frame 11, and its base end portion 57 a is rotatably supported by the horizontal support frame 9. The semicircular lever 57 is located below the horizontal frame 11, and its swing shaft 58 is located below the rotation axis 11 c of the horizontal frame 11. The horizontal frame 11 and the semicircular lever 57 are provided so as to be separable from each other.

  The other end portion of the arc-shaped flange 53 is pivotally attached to the connecting portion 51 a of the hook piece 51, and the axial attachment position is inside the rotation fixed shaft 45.

  As shown in FIG. 5, the horizontal support frame 9 is provided with an upright limit stopper 60 that restricts the rotation of the semicircular lever 57. The stopper 60 is, for example, an L-shaped plate and is provided below the semicircular lever 57.

Next, the operation of this embodiment will be described.
After the traveling handle 23 is pushed, the drum can transporter A is moved to the vicinity of the drum can D, and the drum can D is inserted into the horizontal frame 11, and then the height of the horizontal frame 11 is adjusted to determine the position of the gripping claws 32 and the drum can D. Align the ear with the ear.

After the grip handle 35 is rotated and the ear portion of the drum can D is clamped 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. 8, the drum can D is in a vertical state, and the lower portion of the body portion is supported by the lower receiving plate 42. The lower hook link mechanism R causes the hooking piece 51A to jump up to the opposite side of the drum can D as shown in FIG. 7 (dashed line 51A) and FIG. A schematic diagram of the link relationship of the lower hook link mechanism R at this time is shown in FIG.

Forward rotation of rotating handle:
When the rotary handle 12 is rotated forward, that is, rotated by a predetermined angle in the direction of arrow A12, as shown in FIG. 9, the horizontal frame 11 rotates forward, that is, rotates in the direction of arrow A11. The angle formed by the frame 11 and the semicircular lever 57 is θ1, for example, θ1 = 2 °.

  At this time, since the ridge 49 is pushed by the rotation interlocking shaft 55, it rotates in the direction of arrow A44 around the fixed shaft 44, and the linear movement shaft 37 is displaced upward, that is, in the direction of arrow A37. Extend 40 in the energizing direction. As a result, the arc-shaped ridge 53 is pulled up, so that the hooking piece 51 rotates in the direction of the arrow A45 about the rotation fixed shaft 45 and enters a state of 51B indicated by a two-dot chain line. This state is an intermediate state between the hook-off 51A and the hook-on (51C), that is, a neutral state.

  Further, when the rotary handle 12 is rotated in the same direction by a predetermined angle, the horizontal shaft 11 is further rotated in the same direction, the vertical frame 30 is further inclined, and the semicircular lever 57 is erected as shown in FIG. The angle formed by the semicircular lever 57 and the lateral frame 11 away from the limit stopper 60 is θ2, for example, θ2 = 4 °.

  At this time, since the ridge 49 is pushed by the rotation interlocking shaft 55, it rotates around the fixed shaft 44 in the direction of arrow A44, displaces the linear movement shaft 37 upward, that is, in the direction of arrow A37, and further springs. The member 40 is further extended in the biasing direction. As a result, the arc-shaped rod 53 is pulled up, so that the hook piece 51 rotates in the direction of the arrow A45 about the rotation fixed shaft 45, and as shown by the solid line 51C in FIG. 7 and 51C in FIG. Engage with the bottom edge of the bottom and hook on (locked). A schematic diagram of the link relationship of the lower hook link mechanism R at this time is shown in FIG.

  In this manner, after the upper and lower portions of the drum can D are securely fixed to the vertical frame 30, the rotary handle 12 is further rotated in the same direction to tilt the drum can D and discharge the contents.

Reverse rotation handle:
After releasing the contents of the drum D, when the rotary handle 12 is reversed, that is, rotated in the direction opposite to the arrow A12, the inclination angle of the vertical frame 30 gradually decreases, and the horizontal frame 11 is in the state shown in FIG. FIG. 11 shows the relationship between the vertical frame 30 and the semicircular lever 57 at this time. In FIG. 11, a straight line L1 connecting the rotating shaft 11c of the horizontal frame 11 and the swinging shaft 58 of the semicircular lever 57 is inclined by an angle α with respect to a perpendicular L2 passing through the rotating shaft 11c. The distance W between the center line of the frame 11 and the free end 57a of the semicircular lever 57 is A. The pull piece 51 of the lower hook link mechanism R is hook-on (state 51C in FIG. 7).

  Further, when the rotary handle 12 is reversed by a predetermined angle, the horizontal frame 11 is further reversed, and the drum can D approaches a vertical state, and as shown in FIG. The horizontal frame 11 approaches the semicircular lever 57 while being prevented from rotating. The relationship among the vertical frame 30, the semicircular lever 57, and the upright limit stopper 60 at this time is shown in FIG.

  In FIG. 12, the angle formed by the straight line L1 and the perpendicular L2 is β, which is an extremely smaller value than α. The interval w is B, which is smaller than A, and the semicircular lever 57 approaches the horizontal frame 11 by AB. For this reason, the rotation interlocking rod 55 pulls up the H-shaped rod 49, so that the H-shaped rod 49 rotates around the fixed shaft 44 and resists the spring force of the spring member 40 to move the linear movement shaft 37. Pull up. Therefore, the hook piece 51 rotates upward about the rotation fixed shaft 45, so that the state 51B (neutral) is obtained.

  When the rotary handle 12 is further rotated in the same direction, the horizontal frame 11 becomes horizontal and comes into close contact with the semicircular arc lever 57. At this time, the drum D is vertical, and the rotation interlocking rod 55 pulls down the hem 49. Therefore, the ridge 49 is rotated about the fixed shaft 44, and the linear movement shaft 39 is pulled up against the spring force of the spring member 40. For this reason, the hook piece 51 rotates about the rotation fixed shaft 45 in the direction opposite to the arrow A45, so that it is flipped up to the opposite side of the drum can D to be in the state of 51A. That is, the hook is turned off, and the engagement between the hook piece 51 and the drum D is released.

  In this state, the horizontal frame 11 is lowered and the drum can D is grounded, and then the grip handle 35 is turned to remove the grip claws 32.

A second embodiment of the present invention will be described with reference to FIG. 15. The same reference numerals as those in FIGS. 1 to 14 have the same names and functions.
The difference between this embodiment and Embodiment 1 is that instead of using a semicircular lever as a release lever, a head trapezoid lever 67 comprising a parallel bar body 61 and a trapezoidal head 62 is used. In this way, the interval between the swing shaft and the upright stopper can be made larger than that of the semicircular lever.

It is a top view which shows Example 1 of this invention. It is a top view of FIG. It is a principal part enlarged view of FIG. It is an enlarged side view of a lower hook link mechanism. It is an enlarged plan view of a horizontal support frame. It is an enlarged view of a semicircular lever It is an enlarged front view of a lower hook link mechanism. It is a front view which shows the state which grasped the ear | edge part of the drum can and was grasped with the nail | claw. It is a front view which shows the initial state which rotated the horizontal frame. It is a front view which shows the state which rotated the horizontal frame further. It is a front view which shows the relationship between the horizontal frame at the time of hook-on, and a semicircle lever. It is a front view which shows a state when the horizontal frame of FIG. It is a simplified diagram of the lower hook link mechanism at the time of hook off. It is a simplified view of the lower hook link mechanism at the time of hook-on. It is a top view which shows Example 2 of this invention.

Explanation of symbols

9 Horizontal support frame 11 Horizontal frame 12 Rotating handle 30 Vertical frame 37 Linear moving shaft 40 Spring member 44 Fixed shaft 45 Rotating fixed shaft 49 Hexagonal hook 50 Hooking piece 53 Arc-shaped hook 55 Rotating interlocking rod 57 Semicircular lever 60 Upright Limit stopper

Claims (4)

A horizontal support frame provided on the 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; a vertical frame fixed to a free end of the horizontal frame; An upper support means provided at the upper end portion of the vertical frame and holding the upper end portion of the drum can; a lower support means provided at the lower end portion of the vertical frame and holding the lower end portion of the drum can; and a rotation for rotating the horizontal frame. A drum can with a moving means;
The lower support means includes a slidable linear movement shaft built in the vertical frame, a spring member that urges the linear movement shaft upward, and a base end portion of the horizontal frame. A release lever that is pivotally attached to the lower side of the pivoting portion and can be brought into contact with and separated from the horizontal frame, a rotation interlocking rod connected to a free end of the release lever, and a rotation of the release lever provided on the horizontal support frame. A lower end hook link mechanism that connects the upright limit stopper for restricting, a hook piece supported by a rotation fixed shaft at a lower end portion of the vertical frame, and the rotation interlocking rod, the linear movement shaft, and the hook piece. When the horizontal frame is rotated forward, the release lever is moved away from the upright limit stopper, the linear movement shaft is moved downward to rotate the hooking piece in the hook-on direction, and the forward rotated horizontal frame is reversed. The release lever will come into contact with the upright limit stopper and the linear movement shaft will A lower hook link mechanism for rotating the hooking piece in the hook-off direction to move towards,
A drum transporter characterized by comprising:   The lower hook link mechanism is a heel-shaped hook that is attached to the upper part of the rotation fixed shaft of the vertical frame, the long side end is attached to the lower end of the rotation interlocking hook, and the top is the lower end of the linear movement shaft. And a arcuate scissor having one end pivotally attached to the short side end of the scissors and the other end pivotally attached to the hooking piece. The drum can truck according to claim 1   The drum can transporter according to claim 1 or 2, wherein the heel-shaped ridge is connected to the linear movement shaft via a connection ridge.   4. The drum transporter according to claim 1, wherein the release lever is a lever composed of a parallel bar body and a trapezoidal head, or a semicircular lever.

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