JP2002211877A - Cargo handling apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cargo handling apparatus capable of increasing the number of cargoes to be handled, selectively performing cargo handling in the horizontal arranging attitude or in the vertical arranging attitude, and easily correcting the position of center of gravity of the cargo handling apparatus. SOLUTION: A main body 11 of this cargo handling apparatus is formed by a supported part 12 supported on a cargo handling means 1 and a support part 13 rockably provided on the supported part 12. This apparatus is provided with a horizontal operating means 17 for rocking the support part 13 to the supported part 12. The support part 13 is provided with a pair of C-shaped hooks 21 having the lateral locking parts 24 at the lower part freely close to and apart from each other. An approaching and separating movement means 31 is provided for moving both locking parts 24 to approach and separate from each other. Both locking parts 24 are formed by a fixed locking part 24A and a movable locking part 24B moving forward and backward in the lateral direction to the fixed locking part 24A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cargo handling device mounted on a hook of a crane and used for cargo handling such as a coil.

[0002]

2. Description of the Related Art Conventionally, as a cargo handling device of this type, a pair of C-shaped hooks are provided on a main body supported by a crane, for example, so that a horizontal locking portion at a lower portion thereof can be freely approached and separated from each other. There is provided a configuration provided with an approach / separation moving means for moving the both engagement portions toward / away from each other.

[0003] According to this conventional configuration, by moving the two locking portions closer together by the operation of the approach / separation moving means, these locking portions are locked to the coil, so that one coil can be loaded and unloaded.
Further, by moving the two locking portions apart by the reverse operation of the approach / separation moving means, these locking portions are respectively locked to the coils, and the two coils can be simultaneously loaded and unloaded.

[0004]

However, according to the conventional structure described above, normally, a maximum of two coils can be unloaded only in a side-by-side state. And so on. Also, the position of the center of gravity of the loading / unloading device changes depending on the no-load state in which the locking portion is empty, the load state in which the coil is locked in the locking portion, the position where the coil is locked by the locking portion (stacking position), and the like. This makes it difficult to maintain the horizontal position of the locking portion. For this,
The problem was solved by correcting the position of the center of gravity with a spring. However, if the position of the center of gravity fluctuated greatly, the spring could not cope.

[0005] Therefore, the invention according to claim 1 of the present invention can increase the number of cargoes to be unloaded and can selectively perform the cargo handling in the horizontal or vertical position, and can easily position the center of gravity of the cargo handling device. It is an object of the present invention to provide a cargo handling device that can be modified.

[0006]

According to a first aspect of the present invention, there is provided a cargo handling apparatus, comprising:
A supported portion supported by the cargo handling means, and a support portion swingably provided on the supported portion,
Horizontal actuating means for swinging the supporting portion with respect to the supported portion is provided, and a pair of C-shaped hooks are provided on the supporting portion so that the lower horizontal locking portions can be freely approached and separated from each other, An approaching / separating movement means for moving the both engaging portions toward and away from each other is provided, and the both engaging portions are constituted by a fixed engaging portion and a movable engaging portion which is movable in and out of the fixed engaging portion in a lateral direction. It is characterized by being constituted.

Therefore, according to the first aspect of the present invention, the cargo handling device can be set by supporting the supported portion on the cargo handling means. In such a state, the locking portions of the pair of C-shaped hooks are moved closer to each other by the operation of the approach / separation moving means, and the movable locking portion is retracted with respect to the fixed locking portion.
It is possible to lock and carry only one cargo to be loaded via both fixed locking portions. In addition, the locking portions of the pair of C-shaped hooks are moved closer to each other by the operation of the approach / separation moving means, and the movable locking portion is protruded from the fixed locking portion, so that both the fixed locking portion and the movable A plurality of loaded objects can be locked in series (vertically arranged) at the front and rear through the locking portion, and can be loaded at the same time.

[0008] Then, the locking portions of the pair of C-shaped hooks are moved away from each other by the reverse operation of the approach / separation moving means, and the movable locking portion is retracted with respect to the fixed locking portion. Through the stop, each one of the cargo, ie 2
It is possible to lock the left and right loaded articles in parallel (side-by-side) on the left and right sides to simultaneously carry the cargo. Further, the locking portions of the pair of C-shaped hooks are moved away from each other by the reverse operation of the approaching / separating movement means, and the movable locking portion is protruded from the fixed locking portion, so that both the fixed locking portion and both Through the movable locking portion, one cargo object, that is, a plurality of cargo objects, can be locked in parallel on the left and right and in series in front and back, and can be loaded simultaneously.

Further, when the position of the center of gravity of the cargo handling device is greatly changed due to the retracted state of the locking portion when it is empty or the locked state (stacked state) of the load, the horizontal operating means is operated. The position of the C-shaped hook can be changed by relatively swinging the supported portion and the support portion. Thus, even if the position of the center of gravity of the cargo handling device varies greatly, the position of the center of gravity can be easily corrected, and the locking portion can be corrected to a horizontal state.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below.
The state adopted for the cargo handling of the coil will be described with reference to the drawings.

In FIG. 1 to FIG. 4, a main body 11 of the cargo handling device 10 is constituted by a supported portion 12 supported by the cargo handling means 1 and a support portion 13 provided to be swingable on the supported portion 12. Is done. The support portion 13 is formed in a box frame shape having an open top and front and rear surfaces by a flat frame 13a and a side frame 13b erected from a pair of left and right sides of the flat frame 13a. I have.

From the front (or rear) of the flat frame 13a, a pair of left and right brackets 14 are connected upward and outward, and the lower part of the supported portion 12 is connected to both brackets 14a.
The supported portion 12 and the supporting portion 13 are relatively swingably connected to each other by being positioned therebetween and being connected by the horizontal pin 15. Here, the supported portion 12 is formed in a frame rail shape, and a locked pin 16 in the left-right direction is provided on an upper portion thereof.

A posture controlling cylinder device (an example of a horizontal operating means) 17 for swinging the supporting portion 13 with respect to the supported portion 12 is provided. That is, the attitude control cylinder device 17 is a pair of left and right, and the lower portion of the cylinder body 17a is connected to the flat frame 13a via the horizontal pin 18 so as to be relatively swingable.
The upper end of b is connected to the upper part of the supported part 12 via a horizontal pin 19 so as to be relatively swingable. Note that the attitude control cylinder device 17 detects the horizontal by, for example, a horizontal detection device 20 mounted on the support portion 13 and, if it deviates from a preset angle, a solenoid valve (described later) ) Is automatically activated by sending a signal to correct horizontal position (preset angle).

A pair of left and right C-shaped hooks 21 are provided on the support portion 13 so that the horizontal locking portions 24 at the lower portions thereof can be freely moved toward and away from each other. A moving means 31 is provided.

That is, the C-shaped hook 21 comprises an upper horizontal member 22 located in the front-rear direction, a vertical member 23 extending downward at right angles from the rear end of the horizontal member 22, and a vertical member 23.
Lower locking portion 24 extending forward (laterally) at right angles from
Thus, a C-shape is formed. A plurality of brackets 25 extending upward from a plurality of portions of the horizontal member 22 are connected to each other.
Is rotatably supported by the flat frame body 13a via a bearing 27, so that the pair of left and right C-shaped hooks 21 is
3, the locking portions 24 are provided so as to be movable toward and away from each other.

The approach / separation moving means 31 includes the flat frame 1
3a, an electric motor 32, a speed reducer 33 interlocked with the motor shaft, a drive gear 34 attached to an output shaft from the speed reducer 33, and one of which is always meshed with the drive gear 34 One example is constituted by a passive gear (sector gear) 35 attached to the longitudinal shaft 26 and a passive gear (sector gear) 36 constantly meshed with the passive gear 35 and attached to the other longitudinal shaft 26. Have been.

The two locking portions 24 are fixedly extending from the vertical member 23 at right angles to the front, and extend and retract in the front-rear direction (lateral direction) supported and guided by the fixed locking portion 24A. It is composed of a freely movable movable portion 24B. The fixed locking surface 24A is fixed by the upper surface of the fixed locking portion 24A.
a, and a movable locking surface 24b is formed by the upper surface portion of the movable locking portion 24B. In order to move the movable locking portion 24B with respect to the fixed locking portion 24A, a retracting cylinder device (an example of a retracting means) 28 is provided between the two locking portions 24A and 24B.

In FIG. 5, a hydraulic oil tank 41, a motor 42, a hydraulic pump 43 driven by the motor 42, and the like are mounted on the flat frame 13a. The attitude control cylinder device 17 and the retractable cylinder device 28 are connected in parallel to the hydraulic pump 43 via solenoid valves 44 and 45. Note that a relief valve 46, a double safety valve 47, and the like are interposed in the hydraulic circuit.

In FIG. 2, the loading / unloading means 1 for supporting the supported portion 12 is, for example, a crane whose hook 2 is configured to be able to engage with a locked pin 16 of the supported portion 12. I have. The hook 2 is provided with a cargo handling means side power supply coupler 3 and a cargo handling means side control coupler 4. Further, on the main body 11 side, there are provided a cargo handling device side power coupler 38 and a cargo handling device side control coupler 39 which can be connected to and disconnected from the cargo handling device side power coupler 3 and the cargo handling device side control coupler 4.

The operation of the above embodiment will be described below. The cargo handling device 10 engages the locked pin 16 with the hook 2 of the cargo handling means 1, and connects the cargo handling device side power coupler 3 and the cargo handling device side control coupler 4 to the cargo handling device side power coupler 38 and the cargo handling device side control. It can be set by connecting the coupler 39. Thereby, the cargo handling device 10 can energize the motor 42 and control each operating portion.

Each section can be operated by operating a switch in the cab of the crane. That is, by operating the telescopic switch or the swing switch with the main switch turned on, the boom can be extended or retracted or swung, so that the position of the hook 2, that is, the loading device 1
The position of 0 may be changed.

By switching the solenoid valve 44 in accordance with a signal from the horizontal detection device 20, the cylinder device 17 for attitude control is moved in and out, so that the support portion 13 is moved relative to the supported portion 12 around the lateral pin 15. Relative swing. By switching the solenoid valve 45 by the control operation described above, the retractable cylinder device 28 can be extended and retracted, whereby the movable locking portion 24B can move out and retreat with respect to the fixed locking portion 24A.

Further, by driving the electric motor 32 of the approach / separation moving means 31 in the forward / reverse direction, the drive gear 34 is rotated in the forward / reverse direction via the speed reducer 33, whereby the passive gears 35, 36
The front-rear direction shaft 26 is rotated forward and reverse through
The hook 21 can be moved closer to and away from the lower catch 24.

FIG. 6A shows the approach / separation moving means 3.
1 causes the locking portions 24 of the pair of C-shaped hooks 21 to move closer to each other,
Of the movable locking portion 2 with respect to the fixed locking portion 24A by the contraction movement of
4B is retreating. According to this, only one coil (an example of a material to be loaded) 50 can be locked and carried through the fixed locking surfaces 24a of both fixed locking portions 24A.

FIG. 6B shows the approach / separation moving means 31.
, The locking portions 24 of the pair of C-shaped hooks 21 are moved closer to each other, and the movable locking portion 24A is moved relative to the fixed locking portion 24A by the extension movement of the retractable cylinder device 28.
B is protruding. According to this, both fixed locking portions 2
The two coils 50 can be locked in series (vertically arranged) in front and back through the fixed locking surface 24a of 4A and the movable locking surface 24b of both movable locking portions 24B, and can be loaded at the same time.

FIG. 6C shows the approach / separation moving means 3.
1, the locking portions 24 of the pair of C-shaped hooks 21 are moved away from each other, and
The retracting movement of 8 causes the movable locking portion 24B to retreat with respect to the fixed locking portion 24A. According to this, one coil 50, that is, two coils 50, respectively, can be locked in parallel (side-by-side) on the left and right sides via the fixed locking surfaces 24a of both fixed locking portions 24A, and can be simultaneously loaded.

FIG. 6D shows the approach / separation moving means 3.
1, the locking portions 24 of the pair of C-shaped hooks 21 are moved away from each other, and
8, the movable locking portion 24B protrudes from the fixed locking portion 24A. According to this, one coil 5 is provided via the fixed locking surface 24a of both fixed locking portions 24A and the movable locking surface 24b of both movable locking portions 24B.
0, that is, the four coils 50 can be locked in parallel on the left and right and in series on the front and rear to simultaneously load and unload.

In this manner, one to four coils 50
, The number of cargoes of the coil 50 can be increased, and efficient cargo handling can be performed. In addition, a plurality of cargo handling can be performed by selecting a cargo handling in a horizontal or vertical arrangement, thereby coping with a state of the coil 50 group at the time of receiving and a state of the coil 50 group at the time of delivering.

Further, the position of the center of gravity of the loading / unloading device 10 is greatly changed depending on the expansion / contraction (retracting) state of the locking portion 24 when it is empty and the locking state (stacking state) of the coil 50. The horizontal state of the stop 24 is disturbed, and the coil 5
Thus, the delivery and cargo handling (transportation) of 0 cannot be performed stably.

In such a case, the attitude control cylinder device 17 is actuated by a signal from the horizontal detection device 20,
By relatively swinging the supported portion 12 and the support portion 13 around the horizontal pin 15, the position of the C-shaped hook 21 is changed. Thus, even if the position of the center of gravity of the cargo handling device 10 fluctuates greatly, the position of the center of gravity can be easily corrected, and the locking portion 24 can be corrected to a horizontal state.

For example, when the tip (front end) of the locking portion 24 is tilted at a predetermined angle or more so as to be upward, the solenoid valve 44 is switched by a signal from the horizontal detection device 20 to control the posture. The cylinder device 17 for contraction is moved around the horizontal pin 15 so that the relative angle between the supported portion 12 and the support portion 13 is reduced, so that the C-shaped hook 21 is moved vertically. The position is moved so that the 23 side is raised.

When the tip (front end) of the locking portion 24 is tilted at a predetermined angle or more so as to be downward, the solenoid valve 44 is switched by a signal from the horizontal detection device 20 to control the posture. Cylinder device 17
Is extended, and is relatively swung around the horizontal pin 15 so that the relative angle between the supported portion 12 and the support portion 13 is increased, whereby the C-shaped hook 21 is lowered on the side of the vertical member 23. To move the position.

Therefore, the C-shaped hook 21 always automatically keeps the horizontal posture (preset angle) when the power is turned on. In addition, the operation amount in each operation unit is appropriately detected by a sensor, so that the operation stop and the like are automatically controlled.

In the above embodiment, a crane is shown as the cargo handling means 1.
It may be a vehicle type crane or an installation type crane.

In the above embodiment, the attitude control cylinder device 17 is shown as the horizontal operation means.
This may be a gear type or a screw shaft type. In the above-described embodiment, a gear type is shown as the approach / separation moving means 31, but this may be a cylinder type or a screw shaft type.

In the above-mentioned embodiment, the cylinder type is shown as the reciprocating means, but it may be a rack and pinion type or a screw shaft type. In the above-described embodiment, the coil 50 is shown as the cargo, but it may be another cylindrical object.

[0037]

According to the first aspect of the present invention, when the loading / unloading device is set with the supported portion supported by the loading / unloading means, the pair of C-shaped hooks are locked by the operation of the approach / separation moving means. By moving the moving parts closer to each other and moving the movable locking part back and forth with respect to the fixed locking part, only one cargo can be locked and cargo can be handled through the two fixed locking parts. Also,
By moving the locking portions of the pair of C-shaped hooks toward each other by the operation of the approach / separation moving means, and by moving the movable locking portion to the fixed locking portion, the fixed locking portion and the both movable locking portions are moved. A number of cargo items are connected in series (vertically arranged)
And can be loaded at the same time.

Then, the locking portions of the pair of C-shaped hooks are moved away from each other by the reverse operation of the approach / separation moving means, and the movable locking portion is retracted with respect to the fixed locking portion. Through the stop, each one of the cargo, ie 2
It is possible to simultaneously load a plurality of cargoes by locking them in parallel (side by side) on the left and right. Further, the locking portions of the pair of C-shaped hooks are moved away from each other by the reverse operation of the approaching / separating movement means, and the movable locking portion is protruded from the fixed locking portion, so that both the fixed locking portion and both Via the movable locking portion, one load, that is, a plurality of loads can be locked in parallel on the left and right and in series in front and back, and can be loaded at the same time.

In this manner, one to a plurality of cargo items can be loaded, and the number of cargo items to be loaded can be increased so that efficient cargo handling can be performed. Also, several cargo handling
It is possible to selectively perform the cargo handling in the horizontal or vertical orientation, thereby coping with the state of the cargo group at the time of receiving and the state of the cargo group at the time of delivery.

When the position of the center of gravity of the loading / unloading device is greatly changed due to the retracted state of the locking portion when the loading device is empty or the locked state (stacked state) of the load, the horizontal operating means is operated. The position of the C-shaped hook can be changed by relatively swinging the supported portion and the support portion. Thereby, even if the position of the center of gravity of the cargo handling device fluctuates greatly, the position of the center of gravity can be easily corrected, so that the locking portion can be corrected to a horizontal state, and the loading and unloading of the material to be loaded and unloaded and carried ) Etc. can always be suitably and stably performed.

[Brief description of the drawings]

FIG. 1 shows an example of an embodiment of the present invention and is a perspective view of a cargo handling device.

FIG. 2 is a side view of the cargo handling device.

FIG. 3 is a front view of the cargo handling device.

FIG. 4 is a plan view of the cargo handling device.

FIG. 5 is a hydraulic circuit diagram of the same cargo handling device.

FIG. 6 is a schematic perspective view showing a cargo handling state of the cargo handling device;
(A) is a state in which one coil is locked, (B) is a state in which two coils are locked in series, (C) is a state in which two coils are locked in parallel, and (D) is a state in which two coils are locked in parallel. This is a state in which four coils are locked.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cargo handling means 2 Hook 10 Cargo handling device 11 Main body 12 Supported part 13 Support part 15 Lateral pin 16 Locked pin 17 Cylinder device for attitude control (horizontal operation means) 20 Horizontal detector 21 C-shaped hook 24 Locking part 24A Fixed locking portion 24a Fixed locking surface 24B Movable locking portion 24b Movable locking surface 26 Front and rear direction shaft 27 Bearing 28 Retracting cylinder device (protruding / retracting means) 31 Approaching / separating moving means 32 Electric motor 33 Reduction gear 34 Drive Gear 35 Passive gear 36 Passive gear 42 Motor 43 Hydraulic pump 44 Solenoid valve 45 Solenoid valve 50 Coil (load)

Claims (1)

[Claims] The main body includes a supported portion supported by the cargo handling means, and a support portion swingably provided on the supported portion, and swings the support portion relative to the supported portion. A pair of C-shaped hooks are provided on the support portion so that the lower locking portions in the lateral direction can be freely moved toward and away from each other. Separating means is provided, and both locking parts are constituted by a fixed locking part and a movable locking part which can be extended and retracted in a lateral direction with respect to the fixed locking part. apparatus.