JPH0710485A - Heavy object conveyance device - Google Patents

Abstract

PURPOSE:To provide a heavy object conveyance device which can easily convey heavy object such as textiles wound around several kinds of beams having different width. CONSTITUTION:A first frame member 11 of a main frame 10, a third frame member 21 of an auxiliary frame 20, and a lift arm 28 on one side constitute one (first) unit substantially, and a second frame member 12 of the main frame 10, a fourth frame member 22 of the auxiliary frame 20, and a lift arm 28 on the other side constitute another (second) unit, and an expansion and shrinkage device 13 is provided between both units.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heavy load transporting device for transporting, for example, a woven fabric wound around a winding core (hereinafter referred to as a beam) having a collar at both ends from a loom to a packaging device. It is a thing.

[0002]

BACKGROUND OF THE INVENTION Beam wound fabrics are commonly
Since it has a weight of about 0 to 300 Kg, a heavy load transporting device having a lift arm is used when transporting it from a loom to a packaging device or the like. In a conventional heavy load carrying device, a pair of lift arms rotate in a vertical plane by a carriage or a hydraulic cylinder provided on a frame,
It is configured to lift both ends of the beam by rotating the lift arm. By the way, since the width of the beam differs depending on the type of the loom or the fabric, the position (or width) of the lift arm is adjusted each time when transporting multiple types of beams with different widths (fabric wound on). Must. Therefore, in order to allow the width of the pair of lift arms to be adjusted in the horizontal direction, each lift arm is fixed by screws or the like on a horizontal rail connected to a hydraulic cylinder or the like (not shown for obvious reasons). .

[0003]

In the conventional heavy load carrying device, the screws must be loosened and tightened manually in order to adjust the width of the lift arm.
There was a problem that workability was poor and automation of transfer work could not be supported. Furthermore, when the width of the beam (or the width of the loom) is smaller than the width of the carriage or frame of the heavy load carrier, the carriage or frame of the heavy load carrier contacts the frame of the loom, and the heavy load carrier and / or There are problems that the frame of the loom is damaged and the movement of the lift arm is restricted.

The present invention has been made in order to solve the above problems, the width of the lift arm can be easily adjusted, and the operation of carrying heavy objects can be automated. Alternatively, it is an object of the present invention to provide a heavy load carrying device that is less limited by the width of the loom.

[0005]

According to the present invention, there is provided a heavy object carrying device which is capable of expanding and contracting in a horizontal first direction, and expands and contracts in the first direction according to expansion and contraction of the main frame. An auxiliary frame that can expand and contract in a second horizontal direction that is orthogonal to the first direction, and a pair of lift arms that are respectively provided at both ends of the auxiliary frame in the first direction and that can rotate in a vertical plane. It is equipped with. In the above structure, the main frame is provided between the first and second frame members that are relatively movable in the first direction, and the expansion and contraction mechanism provided between the first and second frame members. And the auxiliary frame is provided on each of the first and second frame members of the main frame,
The third frame member is movable between the first frame member and the second frame member in the second direction, and is provided between the third frame member and the fourth frame member. It is preferable to provide a connecting mechanism that expands and contracts according to expansion and contraction. The first and second of the main frame
It is preferable that each of the frame members has wheels, and at least one of the wheels is a drive wheel capable of turning. Further, a swingable drive wheel may be provided on each of the first and second frame members. Alternatively, it may be configured to have auxiliary wheels that are provided on either of the first and second frame members and that can be put in and taken out in the vicinity of the expansion and contraction mechanism. It is preferable that hooks are provided near the tips of the pair of lift arms to engage with protrusions provided on the main body of the material to be transported. Or
A bucket may be provided between the pair of lift arms. Alternatively, a fork may be provided between the pair of lift arms. A sensor for generating a predetermined signal is provided at a predetermined position near the transported weight object, and a sensor for receiving a signal from the signal generator at a predetermined position of each of the first and second frame members. Is preferably provided, and the expansion / contraction mechanism of the main frame is driven until each of the sensors receives a predetermined signal.

[0006]

The first frame member of the main frame, the third frame member of the auxiliary frame, and one lift arm form substantially one (first) unit, and the second frame member of the main frame. The frame member, the fourth frame member of the auxiliary frame, and the other lift arm form another (second) unit. The telescopic mechanism relatively moves the first unit and the second unit in the first direction to adjust the width of the pair of lift arms. In other words, the frame expands and contracts as the width of the lift arm is adjusted. Each unit (or the first and second frame members) is provided with wheels, and at least one of them is a drive wheel that can turn, so that the heavy load carrying device itself travels. Further, when each unit (or the first and second frame members) is provided with a drive wheel, by controlling the rotation direction and / or the turning direction of each drive wheel in the opposite direction, a sharp turn (the turning radius can be reduced). It can be done. The same applies when auxiliary wheels are provided near the expansion mechanism. Further, a signal generator for emitting a predetermined signal is provided at a predetermined position in the vicinity of the weighted material to be transported (beam having an arbitrary width), and the sensor receives the predetermined signal. By driving the expansion / contraction mechanism of the main frame, the expansion / contraction work of the main frame becomes easy, and no skill is required for the operation. Further, by storing a predetermined program in the computer, it is possible to make the work unmanned.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred first example of the heavy load carrying device according to the present invention.
The embodiment will be described with reference to FIGS. 1, 2 and 3. Figure 1
Is a perspective view showing the configuration of the first embodiment, and FIGS. 2 and 3 are side views showing the operation thereof. In FIG. 1, the main frame 10 includes a first frame member 11 and a second frame member 12.
And a first extension / contraction mechanism 13 that relatively moves the first and second frame members 11 and 12 in a horizontal first direction indicated by an arrow A. In addition, the auxiliary frame 20 has third and fourth frame members 21, 22 and a connecting mechanism 23 that connects the third and fourth frame members. Between the main frame 10 and the third and fourth frame members 21, 22 of the auxiliary frame 20, the auxiliary frame 20 is indicated by an arrow B with respect to the main frame 10 (perpendicular to the first direction).
A second expansion / contraction mechanism 24 that relatively moves in the horizontal second direction is provided. Third and fourth frame member 2
A pair of lift arms 28 that are rotatably supported in a vertical plane, a hydraulic cylinder 26 that rotates the lift arms 28, and auxiliary wheels 25 are provided on the Nos. 1 and 22, respectively. The third and fourth frame members 21, 22 are moved along guide rails (not shown) provided on the first and second frame members 11, 12, respectively, and the guide rails are provided by the second telescopic mechanism 24. The auxiliary wheel 25 does not come into contact with the ground in the most contracted state, but comes into contact with the ground only in the most extended state. Lift arm 2
A hook portion 28a is formed in the vicinity of the tip portion of 8 so as to be able to engage with the protrusions provided on both sides of the beam on which, for example, a woven fabric or the like to be transported is wound. In addition, the pair of lift arms 28 have separate hydraulic cylinders 26, respectively.
However, in order to synchronize the rotations of both lift arms 28, a connecting rod 29 which can expand and contract is provided between both lift arms 28. The first frame member 11 is provided with wheels 14 and a swingable drive unit 30, and the second frame member 12 is provided with wheels 14 so that the heavy load carrying device can travel by itself. is there. The first frame member 11 is provided with a control unit 40 including a battery and a control circuit, a hydraulic pump 41, and the like. Furthermore, the third and fourth frame members 21,
Each of the sensors 22 is provided with a sensor 27 for detecting a predetermined signal such as infrared rays. Here, the first frame member 11 of the main frame 10, the third frame member 21 of the auxiliary frame 20, and one lift arm 28 form substantially one (first) unit. The second frame member 12 of the frame 10 and the auxiliary frame 20
Fourth frame member 22 and the other lift arm 28
And form another (second) unit.

Next, the operation of the first embodiment will be described. As shown in FIG. 2, the heavy load carrying device is stopped so as to be parallel to the beam 50 which is the heavy load. In addition, a brake (not shown) is applied for safety. The first expansion / contraction mechanism 13 shown in FIG. 1 is driven by driving the control unit 40.
To drive. At this time, if the width of the beam 50 is constant or if it is known in advance, the control circuit stores the value and controls the first expansion / contraction mechanism 13 to expand / contract the main frame 10 based on the value. May be. In addition, when a plurality of types of the width of the beam 50 are mixed or the width is unknown, the signal generator 42 that outputs a predetermined signal, for example, the infrared ray or the like is set to the width of the protrusions 51 at both ends of the beam 50. It may be installed together and controlled so that the first expansion mechanism 13 is driven until the sensor 27 receives the signal. Alternatively, it may be manually operated by a skilled worker.

When the pair of lift arms 28 are widened enough to engage the protrusions 51 on both ends of the beam 50,
The second extension mechanism 24 is driven to move (extend) the auxiliary frame 20 in the direction indicated by the arrow C in FIG. 2 with respect to the main frame 10. The movement of the auxiliary frame 20 is stopped when the hook portion 28 a of the lift arm 28 is engaged with the protrusion 51. Then, the hydraulic cylinder 26 is driven to rotate the lift arm 28 in the direction indicated by the arrow D in FIG. The beam 50 is thereby lifted in the air. Subsequently, the second extension mechanism 24 is driven to move (retract) the auxiliary frame 20 in the direction indicated by the arrow E in FIG. As a result, the state shown in FIG. 3 is obtained. Then, the brake is released and the drive unit 30 is driven to convey the beam 50 to the next step, for example, the packaging device. When the next step is reached, after applying the brake, the second extension mechanism 24 is driven to move the auxiliary frame 20 by a predetermined distance, and the hydraulic cylinder 26 is driven to rotate the lift arm in the opposite direction. The beam 50 is placed at a predetermined position. Since this operation is obvious from the above description,
Illustration is omitted.

Next, a second preferred embodiment of the heavy load carrying device of the present invention will be described with reference to FIG. Since the members with the same numbers as in the first embodiment are the same, the description thereof will be omitted. In FIG. 4, a bucket 60 is provided between the pair of lift arms 28. With such a configuration, even if the weight-to-be-conveyed 61 has no winding core (is not wound by the beam), it can be easily transported.

Further, a preferred third embodiment of the heavy load carrying apparatus of the present invention will be described with reference to FIG. In addition, the first
Since the members having the same numbers as those in the second embodiment are the same, the description thereof will be omitted. In FIG. 5, a fork 70 is provided between the pair of lift arms 28. With this configuration, the heavy objects 72 stacked on the pallet 71 can be easily transported. Further, the width of the pair of lift arms 28 of the heavy load carrier according to the present invention is wider than that of a general forklift. Therefore, it is possible to convey a plurality of pallets at the same time by arranging a plurality of forks 70 in parallel between the pair of lift arms 28.

Further, a preferred fourth embodiment of the heavy load carrying apparatus of the present invention will be described with reference to FIG. In addition, the first
Since the members with the same numbers as in the embodiment of are the same,
The description is omitted. In FIG. 6, the other drive unit 31 is the second frame member 12 of the main frame 10.
It is provided so that it can rotate freely. That is, the drive units 30 and 31 are independently provided in front of and behind the heavy goods transporting device, the drive wheels of the drive units 30 and 31 are rotated in opposite directions, and / or the turning directions of the drive units 30 and 31 are reversed. By doing so, it is possible to make a sharp turn with the vicinity of the center of gravity of the heavy load carrying device as the center of rotation. As a result, it becomes easy to work in a narrow space.

Further, a preferred fifth embodiment of the heavy load carrying apparatus of the present invention will be described with reference to FIG. In addition, the first
Since the members with the same numbers as in the embodiment of are the same,
The description is omitted. In FIG. 7, an auxiliary wheel 32 is provided on the first frame member 11 of the main frame 10 via a hydraulic cylinder 33 and the like so that it can be freely taken in and out. In this embodiment, when turning the heavy load carrying device, the auxiliary wheels 32 are taken out to lift the wheels 14 on the second frame 12 side, and so-called three-wheel traveling is performed. in this case,
As compared with the case of the first embodiment shown in FIG. 1, the radius of gyration of the heavy load carrying device becomes smaller. As a result, it becomes easy to work in a narrow space.

According to the present invention, in addition to the transfer of warp beam in a loom, a woven fabric (cross beam) can be transferred. In addition, weft yarns can be placed on a pallet and conveyed, or can be placed in a container such as a bucket or a cardboard box and conveyed, which is effective in labor saving of a consistent system.

[0015]

As described above, according to the present invention, the first frame member 11 of the main frame 10 and the auxiliary frame 20 are provided.
Third frame member 21 and one lift arm 28
And substantially form one (first) unit, and the second frame member 12 of the main frame 10 and the auxiliary frame 2
No. 4 frame member 22 and the other lift arm 2
8 constitutes another (second) unit, and the expansion / contraction mechanism 13 is provided between both units.
The pair of lift arms 28 can be easily driven by driving
The width of the can be adjusted. Furthermore, the lift arm 2
Since the main frame 10 and the auxiliary frame 20 expand and contract with the adjustment of the width of 8, the possibility of colliding with the frames of other devices is reduced, and damage to the frames can be prevented. Further, since at least one of the wheels provided in each unit is used as a driving wheel, the heavy load carrying device can be driven by itself. Further, each unit (or the first and second frame members) is provided with a drive wheel, respectively, and the rotation direction and / or the turning direction of each drive wheel is controlled in the opposite direction to make a sharp turn (the turning radius is small). be able to. The same applies when auxiliary wheels are provided near the expansion mechanism. Further, a signal generator for emitting a predetermined signal is provided at a predetermined position in the vicinity of the weighted material to be transported (beam having an arbitrary width), and the sensor receives the predetermined signal. By driving the expansion / contraction mechanism of the main frame, the expansion / contraction work of the main frame becomes easy. Further, by storing a predetermined program in the computer, it is possible to make the work unmanned. Further, as an additional effect, the first unit and the second unit are connected by the expansion mechanism 13 and the connection mechanism 23, and the expansion mechanism 13 and the connection mechanism have dimensional tolerances. The second unit is the first
Have some degrees of freedom with respect to the units of (or vice versa). As a result, even if there is some unevenness on the road surface of the transport path, the wheels provided in each unit can follow the unevenness and can travel smoothly.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of a first embodiment of a heavy load carrying device of the present invention.

FIG. 2 is a side view showing the operation of the first embodiment.

FIG. 3 is a side view showing the operation of the first embodiment.

FIG. 4 is a side view showing a second embodiment of the heavy load carrying device according to the present invention.

FIG. 5 is a side view showing a third embodiment of the heavy load carrying device according to the present invention.

FIG. 6 is a perspective view showing the configuration of a fourth embodiment of the heavy load carrying device according to the present invention.

FIG. 7 is a perspective view showing the configuration of a fifth embodiment of the heavy load carrier according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Main frame 11 1st frame member 12 2nd frame member 13 Expansion-contraction mechanism 14 Wheel 20 Auxiliary frame 21 3rd frame member 22 4th frame member 23 Connection mechanism 25 Auxiliary wheel 26 Hydraulic cylinder 27 Sensor 28 Lift arm 29 Connecting rod 30 Drive unit 31 Drive unit 32 Auxiliary wheel 33 Hydraulic cylinder 41 Hydraulic pump 42 Signal generator 50 Beam 60 Bucket 70 Fork 71 Pallet

Claims (9)

[Claims] 1. A main frame which is capable of expanding and contracting in a horizontal first direction, and a second horizontal frame which expands and contracts in the first direction as the main frame expands and contracts and is orthogonal to the first direction.
And a pair of lift arms provided at both ends of the auxiliary frame in the first direction and rotatable in a vertical plane. 2. The main frame includes first and second frame members that are relatively movable in the first direction, and an expansion / contraction mechanism provided between the first and second frame members. The auxiliary frame is provided on each of the first and second frame members of the main frame, and is movable in the second direction with respect to the first and second frame members. Frame member, and the third and fourth
2. The heavy load carrying device according to claim 1, further comprising a connecting mechanism which is provided between the frame members and expands and contracts according to expansion and contraction of the main frame. 3. The heavy load according to claim 2, wherein each of the first and second frame members of the main frame has a wheel, and at least one of the wheels is a swingable drive wheel. Transport device. 4. The heavy load carrying device according to claim 2, wherein each of the first and second frame members is provided with a turning drive wheel. 5. The heavy load carrying device according to claim 3, further comprising an auxiliary wheel which is provided on one of the first and second frame members and which can be put in and taken out in the vicinity of the telescopic mechanism. 6. A hook portion for engaging with a protrusion provided on a main body of a material to be transported, is provided in the vicinity of a tip end portion of the pair of lift arms. Heavy equipment. 7. The heavy load carrying device according to claim 1, further comprising a bucket between the pair of lift arms. 8. The heavy load carrying device according to claim 1, further comprising a fork between the pair of lift arms. 9. A signal generator that emits a predetermined signal is provided at a predetermined position near the object to be transported, and a signal generator from the signal generator is provided at a predetermined position of each of the first and second frame members. 9. The heavy load carrying device according to claim 1, further comprising a sensor for receiving a signal, and driving the expansion / contraction mechanism of the main frame until each sensor receives a predetermined signal.