JP3022500B2 - Container lifting and rotating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container lifting and rotating apparatus for hanging a large container such as a drum can in a suspended state, inverting the container, and discharging the contents of the container.

[0002]

2. Description of the Related Art As such a lifting and rotating apparatus, the one shown in FIG. This means that an arc-shaped rotating frame (2), which has a half-circle around a container, is supported at the lower end of a U-shaped hanging frame (1) with an opening facing downward so that both ends are pivotally supported and rotatable in a vertical plane. are doing. The rotary support shaft of the rotary frame (2) is connected to a manual rotary drive (4) incorporating a worm gear, and a support for supporting the upper and lower ends of the container (9) at the center of the rotary frame (2). It has (3). The container (9) is supported by the support (3), and the handle (42) of the manual rotary driving device (4) is turned to rotate the container (9) together with the rotating frame (2) in a vertical plane. Release the contents of the

The lifting and rotating device has a balance weight (not shown) on the opposite side of the suspension frame (1) from the mounting portion of the manual rotary drive device in order to balance the weight of the device in the empty state. In addition, a balance weight (22) is provided at one end of the rotary frame (2) to reduce the load on the handle of the manual rotary drive (4) when rotating the container.

[0004]

The lifting and rotating apparatus requires two balance weights, which increases the weight of the entire apparatus. For this reason, when the container is weighed by the spring balance, the weight of the lifting and rotating device is also added, so that the measurement may not be performed beyond the upper limit of the measurement of the spring balance. Further, even if the operation of the handle of the manual rotary driving device (4) is lightened by the balance weight (22), the weight of the balance weight (22) is limited to the weight so that the device does not tilt forward when the lifting rotary device is lifted. Therefore, with such a weight, the container cannot be rotated so lightly due to a reduction in the transmission torque of the force due to the friction of the gear train including the worm gear built in the manual rotary driving device (4). If the handle operation of the manual rotary driving device (4) is heavy, a part of the turning force of the handle is applied in the direction of shaking the lifting and rotating device including the container, and the container discharge position is not determined due to the shaking of the container, so that the contents can be removed. A problem arises in that it drips wastefully and stains the surroundings.

According to the present invention, the rotating frame is urged in the direction of discharging the contents of the container by a spring force, thereby suppressing an increase in the weight of the entire lifting and rotating apparatus, making it possible to rotate the container with a small amount of labor. The purpose of the present invention is to clarify a lifting and rotating device that can solve the problem.

[0006]

The lifting and rotating apparatus according to the present invention is characterized in that a rotating frame (2) for rotating the container (9) substantially half way is rotatably supported in a vertical plane at a lower end of the hanging frame (1). (2) Connect a manual rotary drive (4) including a worm gear reduction mechanism to the rotating frame.
(2) is provided with a support (3) for supporting the container (9) and rotating the container together with the frame, and the hanging frame (1) is suspended by a hoist or other lifting device; The container (9) is supported by the support (3), and the container (9) is rotated together with the rotating frame (2) by the manual rotary driving device (4), and the container for discharging the filling in the container is lifted and rotated. In equipment, rotating frame
A torque adjusting plate (53) is protruded from the support shaft (25) of (2), one end of which is engaged with the plate and a cable (54) pulled out along the outer periphery of the plate.
Is pulled by a tension spring (52) to urge the rotating frame (2) to rotate in the container discharging direction, and the torque adjusting plate (53) is driven by a manual rotation driving device ( In order to minimize the increase or decrease of the rotational load of 4), the outer peripheral surface where the cable (54) is in contact is located at a position far from the rotation center of the torque adjusting plate (53) when the load is large. When the load is small, the cable is located close to the rotation center of the torque adjustment plate (53).
It is characterized by having a substantially oval shape so that the contact end of (54) is located.

[0007]

The rotation frame (2) is urged to rotate in the direction of discharging the contents of the container by a spring force, and the rotation force of the spring acts on the worm wheel of the worm gear of the manual rotary drive (4). However, the worm gear meshing with the worm wheel is in a state in which the worm wheel is self-locked with respect to the rotational force from the worm wheel, and the worm wheel does not rotate. That is, the rotating frame
(2) does not rotate and maintains a horizontal state. Lift and rotate the lifting / rotating device with a winch or the like corresponding to the height of the container. (3)
To support the container. Further, the lifting and rotating device is lifted, and the container is suspended in the standing posture.

[0008] While the container is suspended in the air, the container is moved to the discharge position of the container contents. Handle (42) for manual rotary drive (4)
When the worm gear is rotated by turning, the worm wheel rotates and the container rotates together with the rotating frame (2). The worm wheel meshing with the worm gear is biased in the rotational direction by a spring, so that the worm gear can be turned lightly. For this reason, when the handle of the manual rotary driving device (4) is operated, it is possible to prevent a force from being applied in an unnecessary direction to greatly shake the lifting rotary device including the container, and to stabilize the posture of the container so that the contents can be correctly positioned. You can release things.

Therefore, as in the prior art, a manual rotary drive
(4) The operation of the handle is heavy, and the entire lifting and rotating device including the container is greatly shaken, and the discharge position of the container contents cannot be determined, so that the contents cannot be discharged to an accurate position, and the contents are wasted. It is possible to avoid a situation in which the surroundings are polluted and spilled.

In the present invention, even if the spring force for urging the rotating frame (2) in the rotating direction is increased, as long as the handle (41) of the manual rotary driving device (4) is not turned, the rotating frame (2) is not rotated. ) Does not rotate, and the magnitude of the spring force hardly affects the overall balance when the lifting / rotating device is lifted. There is no problem in reducing the steering wheel operation. Therefore, it is possible to reduce the weight of the lifting and rotating device as compared with the case where the handle operation is reduced by the balance weight as in the past, and since the weight of the container including the lifting and rotating device exceeds the weighable weight in the conventional case, the spring balance cannot measure the weight. Even those that did not exist can be measured.

When the discharging operation is completed and the container is returned to the upright position, the spring force for urging the rotating frame (2) is controlled by a manual rotary driving device.
(4) To make the steering wheel operation heavy,
The lifting and rotating device including the container may shake, but since the contents are discharged, there is no problem even if the container shakes.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a suspension frame (1) is formed in a substantially U-shape with an opening facing downward.
At the lower end of 7), arm pieces (11) and (12) protrude rearward. The upper part of the downward rods (17) (17) is inclined backward, and a suspension ring (14) is provided at the center of the horizontal rod (18) connecting the downward rods (17) (17). A handle (13) protrudes from the lower part of one downward rod (17).

A rotary frame (2) is pivotally supported between the tips of the arm pieces (11) and (12). The rotating frame (2) is formed in an arc shape that makes a half circumference of the container (9), and has support shafts (25) and (26) projecting outward at both ends, and the both support shafts (25) and (26) are arm pieces. (11) Fitted on bearings (not shown) provided in (12).

At the center of the rotating frame (2), a support (3) for supporting the container is provided. The support (3) fixes the rectangular tube (30) perpendicular to the rotating frame (2), and clamps the upper end of the rectangular tube (3).
1) At the lower end, a contact plate (34) and a hook (32) are provided. As shown in FIG. 4, the clamp means (31) includes an upper nail (31a) and a lower nail.
(31b) sandwich the upper edge of the container (9) with a clamp screw
(31c) prevents the claws (31a) (31b) from opening.

The contact plate (34) contacts the lower peripheral surface of the container (9), and is curved in an arc corresponding to the peripheral surface of the container. The hook (32) hooks the lower edge of the container to maintain the parallel posture of the container and the square tube (30).
2) is constantly urged toward the clamping means (31) by a spring (36) in the rectangular tube (30), and the spring (3) is
The hook (32) is pushed down against 6) and further rotated to disengage the hook (32) and the lower edge of the container.

The support shaft (25) at one end of the rotary frame (2) is attached to the arm (1).
It passes through the bearing of 1) and is connected to the manual rotary drive (4). The manual rotary driving device (4) is connected to a handle (42) via a bevel gear to the worm gear of a worm gear reduction mechanism composed of a worm gear and a worm wheel, and the worm wheel supports the rotating frame (2). Is linked. A through hole is formed in the axis of the worm wheel, and a support shaft (25) is fitted into the hole so as to be integrally rotatable with the worm wheel by key engagement, spline engagement, or the like.

As shown in FIGS. 1 and 4, a manual rotary driving device is provided.
The gear case (41) of (4) is fixed to the base end of a detent plate (43) provided between the gear case (41) and the arm piece (11),
The tip of the rotation stopper plate (43) is fixed to the arm piece (11) by a bolt (44). A rubber bush (45) is interposed between the bolt (44) and the detent plate (43).

That is, the manual rotary driving device (4) includes a rotary frame.
(2) It is not fixed to the arm (11),
The manual rotation drive device (4) supported by the support shaft (25) of (2) and having the rotation centered on the support shaft (25) stops the entire rotation of the rotation stopper plate (4).
This is only done by 3). If the manual rotary drive (4) is mounted on the suspension frame (1) as described above, the support shaft (25)
Even if a force is applied to the handle, the manual rotation drive device (4) is not forcibly applied, and the rotation of the handle (42) can be prevented from becoming heavy due to the force of the support shaft (25).

As shown in FIGS. 2, 3 and 5, the rotating frame (2)
A biasing means (5) using a spring that biases the rotating frame (2) in a direction of rotating the rotating frame forward is connected to the other support shaft (26). The urging means (5) includes a torque adjusting plate (53) fitted to the support shaft (26) so as to be integrally rotatable therewith, and a downward rod (1) of the rotating frame (2).
7) Connect the spring mounting box (15)
It is configured by linking at 0).

The lower surface of the spring mounting box (15) is open,
Elongated slots (16, 16) are opened on both side walls. A reel (59a) around which a band-shaped helical spring (59) is wound is rotatably supported on the upper part in the spring mounting box (15). The helical spring (59) is wrapped around the reel (59a) by the winding habit of its own spring action, and when you pull the free end,
The reel (59a) extends while rotating, and rewinds on the reel when the pulling force is released. The helical spring (59) has a characteristic that the retraction force is constant regardless of the tension length.

The connecting member (50) has a tension spring (52) inserted into a spring case (51) in which two cylinders are extended and contracted, and end members (55) (56) are attached to both ends of the tension spring (52). ). While fixing the upper end of the upper end member (55) and the upper end of the spring case (51), the horizontal axis (57) is passed through the upper end of the end member (55),
Insert both ends of the horizontal axis (57) into the long holes (16) of the spring mounting box (15).
(16) is slidably fitted. Also, upper end member (55)
Has a free hole at the free end of the helical spring (59).
(16) It is connected in a state where it is pulled out more than the length.

The lower end member (56) is engaged with one end of a rope (54) having a high tensile strength, such as a chain or a wire, and is connected to the rope (5).
4) is locked on the peripheral surface of the torque adjusting plate (53). As shown in FIG. 5, the torque adjusting plate (53) is formed in a substantially oval shape having a large-diameter portion at which the support shaft (26) is fitted. (54b) is fixed, and is guided from below to the small diameter portion of the torque adjusting plate (53) along the peripheral surface of the large diameter portion. A groove (illustration is formed) for guiding the rope (54) is formed on the outer peripheral surface of the torque adjusting plate (53).

As shown in FIG. 5, when the suspension frame (1) is raised and the rotating frame (2) is in a horizontal state, the tip of the torque adjusting plate (53) is slightly downward, and The contact end (54a) of the cable (54) is located slightly above the small diameter portion of the torque adjusting plate (53). In FIG. 5, when the support (3) holds the container as described above, the torque adjusting plate (53) rotates clockwise together with the rotating frame (2). Then the cable (54) and torque adjustment plate
The contact end (54a) of (53) gradually moves away from the center of rotation of the torque adjusting plate (53) until the torque adjusting plate (53) rotates about 25 °, and thereafter gradually approaches the center of rotation, and゜ If you rotate, you will get closer.

The contact end of the cable (54) with the torque adjusting plate (53)
The further the (54a) is away from the center of rotation of the torque adjusting plate (53), the stronger the force for urging the rotating frame (2) to rotate in the direction of discharging the contents of the container. As the contact end (54a) approaches the center of rotation, the rotation urging force becomes weaker.

FIG. 10 shows the torque required to rotate a container filled with a half amount of the content from a suspended standing posture. It can be seen that the torque gradually increases from 0 to 25 °, and thereafter gradually decreases. The torque adjusting plate 53 automatically adjusts a torque required for rotating the container according to a rotation angle.

However, since the rotating frame (2) is urged to rotate in the direction of discharging the contents of the container by the spring force, the rotating force acts on the worm wheel of the worm gear reduction mechanism of the manual rotary drive (4). However, the worm wheel is self-locked by a meshing worm gear, and rotation of the worm wheel is prevented.

The lifting and rotating device is supported by a winch or the like,
The container (9) is lifted until the clamping means (31) corresponds to the height of the upper edge of the container (9). The upper edge of the container is clamped by the clamping means (31), the container is slightly lifted, and the hook (32) is hooked on the lower edge of the container (9). Further, the lifting and rotating device is lifted, and the container is suspended in the standing posture. While the container is suspended in the air, it is moved to the discharge position of the container contents.

When the worm gear is rotated by turning the handle (42) of the manual rotary drive (4), the worm wheel rotates and the container rotates together with the rotating frame (2). Since the worm wheel meshing with the worm gear is spring-biased in the rotating direction, the worm gear can be turned lightly, and the contents can be discharged without greatly shaking the lifting and rotating device including the container.

Therefore, as in the prior art, a manual rotary drive
(4) The operation of the handle is heavy, and the entire lifting and rotating device including the container is greatly shaken, and the discharge position of the container contents cannot be determined, so that the contents cannot be discharged to an accurate position, and the contents are wasted. It is possible to avoid a situation in which the surroundings are polluted and spilled.

In the embodiment, a substantially egg-shaped torque adjusting plate (53) is fixed to the support shaft (26) of the rotating frame (2), and the torque adjusting plate (53) is fixed.
Pull the rope (54) along the outer circumference of the
Due to the rotational bias of (2), the rotational torque of the rotating frame (2) including the container is reduced by the outer peripheral shape of the torque adjusting plate (53).
Automatic adjustment according to the rotation angle of the container (9)
The torque required to rotate (9) can be reduced.

When the container (9) rotates by more than 80 °, the tension spring (52) becomes free length, and the helical spring (59) works to move the tension spring (52) and the spring case (51) into the spring mounting box (15). ) By the length of the long hole (16) to prevent the rope (54) from loosening.
When the container (9) rotates by more than 80 °, the weight of the container acts in the direction of rotation, so that it is desirable and advantageous that no spring force acts on the rotating frame (2).

In the present invention, even if the spring force for urging the rotating frame (2) in the rotating direction is increased, as long as there is no input to the manual rotary drive (4) by operating the handle (42), the rotating frame ( 2) does not rotate, and the magnitude of the spring force does not affect the overall balance when the lifting / rotating device is lifted.
There is no problem in reducing the steering wheel operation.

When the discharging operation is completed and the container is returned to the upright posture, the spring force for urging the rotating frame (2) is controlled by a manual rotation driving device.
(4) To make the steering wheel operation heavy,
The lifting and rotating device including the container may shake, but since the contents are discharged, there is no problem even if the container shakes.

As in the embodiment, if a manual rotation driving device (4) is provided at one end of the suspension frame (1) and a biasing means (5) is provided at the multiple ends, the weight of the lifting rotation device itself can be easily balanced. . Since the urging means (5) is lighter in weight than the manual rotary driving device (4), in the embodiment, the downwardly pointing rod of the suspension frame (1) on the urging means (5) side is used.
A weight (not shown) is built in (17).

FIGS. 6 to 9 show another embodiment of the rotation urging means (5) for the rotating frame (2). The downward rod (10) of the suspension frame (1) on the side of the urging means (5) is formed in a large hollow shape,
A reel (6) wound with a band-shaped helical spring (64)
4a) is rotatably supported. Pulley (6
5) is provided.

As shown in FIGS. 6 and 8, between the downwardly directed rod (10) and the rotary frame (2), the arm piece (12) of the suspension frame (1) is provided with the rotary frame (2). Place the support shaft (60) below the support shaft (26)
(26), and the base end of the lever (6) is rotatably supported on the support shaft (60) in parallel with the rotation surface of the rotary frame (2). Lock the wire (63) on the free end of the lever (6),
(63) is connected to the leading end of the helical spring (64) via the pulley (65), and the lever (6) is rotationally biased by the spring force.

As shown in FIG. 6, the lever (6) of the rotating frame (2)
A protruding piece (23) is provided on the side of the roller (2)
4) is put on the lever (6), and the rotating frame (2) is moved through the lever (6).
Is urged to rotate. Therefore, the operation of the handle of the manual rotary driving device (4) when rotating the suspended container for discharging the contents becomes lighter for the same reason as described above.

In the embodiment, the position of the rotation center (26) of the rotating frame (2) and the position of the rotation center (60) of the lever (6) are shifted, and
Utilizing the displacement of the contact position of the roller (24) with respect to, a step (66) is provided on the roller (24) rolling surface of the lever (6),
Roller for lever (6) from center of rotation of rotating frame (2)
The length up to the contact point of (24) is made to correspond as much as possible to the required torque for the container rotation angle shown in FIG. FIG.
Means that the rotating frame (2) including the container (9) rotates by 80 ° or more,
The state where the roller (24) is separated from the lever (6) is shown.

The present invention is not limited to the configuration of the above embodiment, and various modifications are possible within the scope of the claims.

[Brief description of the drawings]

FIG. 1 is a perspective view of a lifting rotation device as viewed obliquely from the front.

FIG. 2 is a perspective view of a state in which a rotating frame of the lifting and rotating device is rotated, as viewed obliquely from behind.

FIG. 3 is a front view of the lifting and rotating device.

FIG. 4 is a right side view of the lifting and rotating device.

FIG. 5 is a left side view of the lifting and rotating device.

FIG. 6 is a front view of another embodiment.

FIG. 7 is a right side view of another embodiment.

FIG. 8 is a left side view of another embodiment.

FIG. 9 is an explanatory diagram showing a relationship between the lever and the rotating frame when the rotating frame is rotated by 90 °.

FIG. 10 is a graph showing a change in required torque according to a rotation angle when rotating the container.

FIG. 11 is a perspective view of a conventional lifting and rotating device.

[Explanation of symbols]

 (1) Suspension frame (2) Rotating frame (3) Supporting tool (4) Manual rotary drive (5) Biasing means (52) Tension spring (54) Cable (59) Helical spring (6) Lever (9) Container (9)

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-144398 (JP, A) JP-A-52-99557 (JP, A) Fully open 1974-67477 (JP, U) Really open 1-64 39380 (JP, U) Japanese Utility Model Hei 5-51879 (JP, U) Japanese Utility Model Hei 7-2379 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B66C 1/62 B66C 1 / 42 B66C 1/44

Claims (1)

(57) [Claims] 1. A rotating frame (2) for substantially rotating around a container (9) at a lower end of a suspension frame (1) is rotatably supported in a vertical plane.
(2) Manual rotary drive including worm gear reduction mechanism
(4), and a rotating frame (2) is provided with a support (3) for supporting the container (9) and rotating the container together with the frame. The container (9) is suspended by a lifting device such as a hoist, the container (9) is supported by a support (3), and the container (9) is rotated together with the rotating frame (2) by a manual rotary drive (4). In the rotating device for lifting the container for discharging the filling, the torque adjusting plate (5) is attached to the support shaft (25) of the rotating frame (2).
3) is protruded, one end is locked to the plate, and a rope (54) pulled out along the outer periphery of the plate is pulled by a tension spring (52) to rotate the rotating frame.
(2) is rotationally urged in the direction of discharging the contents of the container, and the torque adjusting plate (53) is capable of increasing or decreasing the rotational load of the manual rotary drive (4) by the rotational angle of the container (9). To get lost
When the load is large, the contact end of the rope (54) is located at a position distant from the rotation center of the torque adjusting plate (53) on the outer peripheral surface where the load is large, and the torque adjusting plate ( 53. A container lifting and rotating device characterized by having a substantially oval shape such that a contact end of a rope (54) is located at a portion close to a rotation center of (53).