JPH10250996A - Lifting machine, and unloading method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a movable type lifting machine and an unloading method in which oscillation in lifting a load can be prevented. SOLUTION: On a movable carriage 14, a fork support column 22 and a guide mast 24 are provided, where both can be extended/contracted by a cargo handling cylinder 23 and a guide cylinder 25-A connection frame 28 is provided on an upper end of a movable part 24B, and a tie-in hole 40 is provided to face a ceiling surface 60. A guide rail 34 is provided on the connection frame 28, and it is slidably engaged with a slide part 58. In a lifting machine 58 of above constitution, the guide mast 24 is extended in performing cargo handling work, and the tie-in hole 40 and an oscillation-stop pin 62 are engaged with each other. After the guide mast 24 is held at both ends, the cargo handling cylinder 23 is actuated to elevate a fork 52. Since the fork support column 22 is connected to the guide mast 24, oscillation by lifting a load can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting machine and a method of discharging, and more particularly to a lifting machine and a loading method used for loading between upper and lower floors in a building.

[0002]

2. Description of the Related Art Conventionally, a hoist has been used to transport materials to each floor in a building under construction. A guide rail is fixedly installed in such a hoisting machine so as to extend over the upper and lower floors, and a fixed type hoisting machine that raises and lowers a lifter along the guide rails, and a fork is directly lifted from a lower floor to an upper floor by raising and lowering a fork. Mobile forklifts and the like are known.

[0003]

However, in the fixed type hoist, it is necessary to install a guide rail at the opening of the ceiling (floor surface) separating the upper and lower floors, and this type of hoist is installed for each floor. Was uneconomical. Also, when not in use, the lifter itself may be an obstacle in the opening.

On the other hand, in a mobile forklift,
It was difficult to lift luggage to the ceiling height of 4m. Even if a forklift capable of lifting to the height of the ceiling surface is applied, increase the forklift's own weight or secure a large area with outriggers to prevent the forklift's guide from swinging during lifting. Special consideration was needed to do so. Therefore, such forklifts have been increasing in size and have been difficult to apply to narrow buildings.

The present invention, which focuses on the above-mentioned conventional problems, provides a lifting machine capable of suppressing the occurrence of run-out even when the work is unloaded to a high place, a movable lifting machine, and a method of unloading equipment with a small facility load. The purpose is to:

[0006]

In order to achieve the above object, a hoist according to the present invention is provided with a carrier lift guide and a carrier guided by the carrier lift guide on a movable trolley to carry out cargo handling in a building. A heavy machine, wherein the moving carriage is provided with a mast for raising and lowering the loading platform elevating guide, and the mast is extended to form a mast engaging portion between an upper end of the mast and a ceiling surface of the building. And

[0007] The mast engaging portion may be formed by uneven fitting, or may be formed by a friction material provided on both or one of an upper end of the guide mast and the ceiling surface. Also, the loading method according to the present invention is characterized in that the loading / unloading guide is provided by extending an extending / contracting means provided on the movable trolley and enabling the loading / lowering guide to move up and down, and locking an upper end of the extending / contracting means to an opening edge of a ceiling surface. Is temporarily fixed while being penetrated through the opening of the ceiling, and the carrier is unloaded along the temporarily fixed guide.

[0008]

According to the above construction, the moving cart is moved to the vicinity of the opening on the ceiling surface, and the mast is extended from the position toward the ceiling surface. After a locking portion is formed between the upper end of the mast and the ceiling surface to stably hold the loading / unloading elevating guide, the loading / unloading platform is moved up and down along the loading / unloading elevating guide to perform the loading / unloading operation.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a lifting machine and a lifting method according to the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a structural explanatory view showing the entire configuration of a lifting machine according to the present invention, and FIG. 1 (1) is an overall perspective view.
FIG. 2B is a view as viewed from an arrow A. As shown in these figures, the lifting machine 10 according to the present invention is provided with a movable carriage 12 at a lower portion thereof. The movable trolley 12 includes a trolley frame 14 having a planar convex shape, and a wide portion 18 and a narrow portion 2 of the trolley frame 14.
0 is provided for each wheel.

The movable carriage 12 includes a fork support column 22,
A pair of guide masts 24 are provided.
The fork support columns 22 are provided in the wide portion 18 of the bogie frame 14, and the distance between the fork support columns 22 is set so as to correspond to the width of the carrier described later. The guide mast 24 is provided in the narrow portion 20 of the bogie frame 14 so as to be parallel to the pair of fork support columns 22. A loading cylinder 23 for raising and lowering the fork support column 22 is provided between the fork support columns 22, and a guide cylinder 25 for raising and lowering the guide mast 24 is provided between the guide masts 24. .

The guide mast 24 is of a telescopic type having a rectangular cross section, and a movable portion 24B is extendable with respect to a fixed portion 24A provided on the bogie frame 14 side.
And the height at the time of maximum extension is set so as to exceed the ceiling height of the building (generally 3 to 4 m). Fixed part 24
At the upper end of A, a flat U-shaped guide support 26 is provided so as to connect the guide masts 24 to each other to prevent the guide mast 24 from falling down due to cargo handling work, and to prevent troubles such as inclination from occurring. I have.

On the other hand, a connection frame 28 for connecting the movable parts 24B is provided at the upper end of the movable part 24B. The rod of the guide cylinder 25 is connected to the lower part of the connection frame 28. By operating the guide cylinder 25, the movable portion 24B can be moved in and out of the fixed portion 24A. A pair of guide rails 34 are provided on the side of the connection frame 28 facing the fork support pillars 22, the guide rails 34 serving as a platform lifting guide. The guide rail 34 is disposed so as to follow the longitudinal direction of the fork support column 22 and protrude from the upper end of the movable portion 24B, and can guide the movable portion 22B by fitting with the movable portion 22B. I have. Therefore, the guide rail 34 is formed with a sliding groove 36 for enabling sliding.

At the upper end of the movable portion 24B, a joining plate 38 is provided which makes contact with the ceiling surface of the building. The connection plate 38 is provided with a connection hole 40 that forms a mast locking portion, and the connection hole 40 has a diameter enough to fit into a concave-convex pin provided on a ceiling surface of a building described later. Is set to A guide support 42 having a flat U-shape is also provided at the upper end of the movable portion 24B, and connects the movable portions 24B to each other and also holds the side surface of the above-mentioned connecting plate 38.

The fork support column 22 also has a guide mast 24.
Similarly to the above, a telescopic type in which the movable portion 22B can expand and contract with respect to the fixed portion 22A. Although not shown, a protruding portion is formed on a side surface portion where the fork support columns 22 face each other so that the cross section of the fork support column 22 has a convex shape. Then, by forcing the protruding portion and the concave groove provided on the fork side into and out of engagement with each other, the fork supporting column 22 receives a force other than the elevating direction generated on the fork when carrying the load,
The fork can be moved up and down along the fork support column 22 reliably. At two locations in the middle of the fixing portion 22A, a guide support 44 having a flat U-shape is provided so as to connect the fork support columns 22 to each other. Is prevented.

At the upper end of the movable part 22B, a connecting frame member 46 for connecting the movable parts 22B to each other is provided. The cargo handling cylinder 2 is located at the center of the connecting frame member 46.
3 are connected, and the loading cylinder 23
The movable portion 22B can be moved in and out of the fixed portion 22A by operating. A pair of sprockets 48 for holding the fork are provided at both ends of the connecting frame member 46.

On the front surface of the wide portion 18 of the movable carriage 12, a fork 52 serving as an L-shaped side carrier is provided. The fork 52 is provided with a concave groove. As described above, the concave groove is fitted to the protrusion provided on the fork support column 22 so as to support the fork 52 in a direction other than the vertical direction. It is designed to be received by the pillar 22. In order to guide the fork 52 along the fork support column 22, the concave and convex fitting is performed by using the fork 5.
It is also possible to provide a protruding projection on the second side and a concave groove on the fork support column 22 side. The tip of the fork 52 is a claw 52B having a pair of claws, and the claw 52B allows the load to be lifted and lowered.

A chain 50 for holding and lifting the fork 52 is connected to such a fork 52, and the other end of the chain 50 is connected to the movable carriage 12 via a sprocket 48. I have. Here, the length of the chain 50 is set so that the fork 52 can reach the highest point with the maximum extension of the fork support column 22. And since the length of the chain 50 is set as described above,
The sprocket 48 serves as a moving pulley, and the fork 5
2 can move up and down from the base of the fixed portion 22A to the highest point of the movable portion 22B.

At the upper end of the movable portion 22B, a flat U-shaped guide support 54 is provided to connect the movable portions 22B to each other. Here, the slider 5 is moved from the central section 54A of the guide support 54 toward the guide rail 34.
6 is provided, and a sliding portion 58 provided on the slider 56 is fitted in the sliding groove 36 of the guide rail 34. For this reason, the movable portion 22B is held so as to be guided along the sliding groove 36. The ceiling surface 60 that contacts the upper end of the guide mast 24 is provided with a pair of vibration-preventing pins 62 that form projections and depressions that form projections and depressions with the fitting holes 40 described above.

A procedure for applying such a lifting machine 10 to cargo handling work inside a building will be described. FIG. 2 is a perspective view showing a state in which the guide mast of the lifting machine according to the present invention is contracted, and FIG. 3 is a view in which the guide mast is extended so that the detent pin 62 and the fitting hole 40 are fitted. FIG. 4 is an explanatory view showing a state in which the fitting of the oscillating pin 62 and the fitting hole 40 is completed.

In order to move the hoist 10 in the building, the cargo handling cylinder 23 and the guide cylinder 25 are contracted, and the overall height of the hoist 10 is reduced. Then, the movable carriage 12 is moved while maintaining this state, and is moved to the edge of the opening where the detent pins 62 are provided on the ceiling surface 60. After the lifting machine 10 is moved so that the position of the vibration-preventing pin 62 provided on the ceiling surface 60 and the fitting hole 40 provided at the upper end of the extension portion 24B are aligned, the wheels 16 are fixed, and the guide cylinder 25 is fixed. The ceiling surface 60
Stretch toward. Here, since the rod of the guide cylinder 25 is connected to the connection frame 28 provided on the movable portion 24B, the extension portion 24B also moves toward the ceiling surface 60 with the extension operation of the guide cylinder 25.

After the extension pin 24B is moved, the pin 62 is fitted into the fitting hole 40, and after confirming that the tip of the pin 62 has completely come out of the fitting hole 40, the guide cylinder is moved. The extension operation of the extension unit 25 is stopped, and the state where the upper end of the extension unit 24B is in contact with the ceiling surface 60 is maintained. In this state, the upper end of the guide rail 34 attached to the connection frame 28 projects to the upper floor, so that the fork 52 guided by the guide rail 34 can move to the upper floor. Further, from this state, the cargo handling cylinder 23 is contracted and the fork 5
If the fork 52 is moved downward, the fork 52 can be lowered to the lower floor.

FIG. 5 is an explanatory view showing the operation of lowering the luggage placed on the upper floor to the lower floor where the lifting machine 10 is installed. As shown in the figure, a luggage 66 to be lowered exists on the upper floor 64. In order to lower the load 66, the cargo handling cylinder 23 of the lifting device 10 is first extended, and the height of the claw portion 52B of the fork 52 is adjusted to the floor position of the upper floor 64. Then, the luggage 66 is moved from the floor of the upper floor 66 to the claw 52B together with the two-way roller conveyor 68. Here, the fork 52 is held by the guide mast 24, which is stretched and held between the ceiling surface and the floor surface, via the guide rail 34 so that it can be guided around the fork 52 by the entry of the load 66. Oscillation can be prevented from occurring.

In order to lower the claw 52B loaded with the load 66 to the lower floor, the rod of the loading cylinder 23 is retracted. Here, since the fork 52 is held by the movable carriage 12 via the sprocket 48, the sprocket 48 plays a role of a moving pulley, and when the rod of the cargo handling cylinder 23 is completely retracted, the fork 52 is fixed to the fixed portion 2
It descends to the base of 2A. When the fork 52 is lowered, the projection provided on the fork support column 22 is
Since the force from the concave groove provided in 2 is received by the concave-convex fitting, the fork 52 can be reliably lowered along the fork support column 22 without tilting the fork 52. After the lowering operation is completed, the hand lifter 72 is inserted under the two-way roller conveyor 68, and the roller conveyor 74 laid in advance is set.
Transfer the luggage 66 to the side.

Here, in the hoist 10, since the guide mast 24 holds the fork 52 so as to be able to be guided as described above, it is possible to prevent the occurrence of deflection due to the cargo handling operation. For this reason, it is not necessary to provide an outrigger, which is conventionally required for preventing runout, and it is possible to provide a work space around the fork 52. For these reasons, the hand lifter 72 and the roller conveyor 74 can be directly installed below the fork 52 in advance.

In the above description, the upper floor 64 to the lower floor 70
The procedure for lowering the luggage 66 is shown in FIG.
Can be lifted from the lower floor 70 to the upper floor 64 by reversing the above procedure. Further, in the present embodiment, the mast locking portion is formed by the concave-convex fitting of the mating hole 40 and the vibration-preventing pin 62, but another method as described below may be used.

FIG. 6 is an explanatory view showing an application example of a mast engaging portion using concave and convex fitting. FIG. 1A shows an arrangement in which an engaging hole 76 is provided in the ceiling surface 60 and a vibration-preventing pin 78 is provided at the upper end of the extension 24B, which is the opposite effect to the present embodiment. Can be expected. Also, FIG.
0 is provided with an uneven fitting member 80. This method can be applied to a case where it is not possible to directly provide a vibration-preventing pin or a connecting hole on the ceiling plate 60 due to the convenience of the building. Then, when the use of the hoisting machine 10 in the building is finished, the concave / convex fitting member 80 may be removed from the ceiling surface 60. When the ceiling surface 60 is made of a material such as concrete that is relatively easy to make a shape, the fitting hole 76 may be integrally formed as shown in FIG.

FIG. 7 shows the upper end of the movable portion 24B and the ceiling surface 60.
FIG. 4 is an explanatory view showing an example in which a mast locking portion is formed by friction with the mast locking portion. As shown in FIG. 1A, when unevenness cannot be formed on the ceiling surface 60 due to the convenience of the building, a high friction material 82 is provided on the ceiling surface 60 and the upper end of the extension portion 24B (or one of them). What is necessary is just to form a mast engaging part by frictional force.

Further, as shown in FIG.
By providing the sword-shaped protrusion 84 at the upper end, friction occurs between the protrusion 84 and the ceiling surface 60 and the protrusion 84
This method is also effective in the case where irregularities cannot be formed on the ceiling surface 60 due to the convenience of the building.

[0030]

As described above, according to the present invention, there is provided a lifting machine for loading and unloading a building provided with a loading platform lifting guide and a loading platform guided by the loading platform lifting guide.
The moving cart is provided with a mast for raising and lowering the loading platform elevating guide, and by extending the mast, a mast locking portion is formed between an upper end of the mast and a ceiling surface of the building, so that Movement becomes possible. Even if you lift your luggage to a higher place (even if you increase the allowance)
Since the occurrence of run-out can be suppressed, the size of the movable cart can be reduced. Therefore, it can be applied to a narrow building.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the overall configuration of a lifting machine according to the present invention.

FIG. 2 is a perspective view showing a state in which the guide mast of the lifting machine according to the present invention is contracted.

FIG. 3 is a state diagram showing a state in which a guide mast is extended and a vibration-preventing pin 62 and a fitting hole 40 are fitted together.

FIG. 4 is an explanatory diagram showing a state when fitting of the vibration-preventing pin 62 and the fitting hole 40 is completed.

FIG. 5 is an explanatory diagram showing an operation of lowering luggage placed on an upper floor to a lower floor where a lifting machine 10 is installed.

FIG. 6 is an explanatory diagram showing an application example of a mast engaging portion using concave-convex fitting.

FIG. 7 is an explanatory diagram showing an example in which a mast engaging portion is formed by friction between an upper end of a movable portion 24B and a ceiling surface 60.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Lifting machine 12 Moving trolley 14 Bogie frame 16 Wheel 18 Wide part 20 Narrow part 22 Fork support column 22A Fixed part 22B Moving part 23 Loading cylinder 24 Guide mast 24A Fixed part 24B Moving part 25 Guide cylinder 26 Guide support 28 Connection frame 34 Guide rail 36 Sliding groove 38 Joint plate 40 Joint hole 42 Guide support 44 Guide support 46 Connection frame member 48 Sprocket 50 Chain 52 Fork 52B Claw 54 Guide support 54A Center section 56 Slider 58 Sliding part 60 Ceiling Surface 62 Detent pin 64 Upper floor 66 Luggage 68 Two-way roller conveyor 70 Lower floor 72 Hand lifter 74 Roller conveyor 76 Alignment hole 78 Detent pin 80 Member for unevenness fitting 82 High friction material 84 Projection

Claims (4)

[Claims] 1. A lifting machine for loading and unloading a building having a loading platform lifting guide and a loading platform guided by the loading platform lifting guide in a movable truck, wherein the transporting truck has a mast for lifting the loading platform lifting guide. And a mast engaging portion formed between the upper end of the mast and the ceiling surface of the building by extending the mast. 2. The hoist according to claim 1, wherein the mast engaging portion is formed by fitting in an uneven shape. 3. The lifting machine according to claim 1, wherein the mast engaging portion is formed by a friction material provided on an upper end of the guide mast or on both or one of the ceiling surfaces. 4. An extension means provided on a movable trolley and capable of moving a loading / unloading guide up and down is extended, and an upper end of the extending / contracting means is engaged with an opening edge of a ceiling surface, so that the loading / unloading guide is moved to the ceiling. A method of unloading, wherein the unloading method is temporarily fixed and fixed while penetrating the opening, and unloading the carrier along the temporarily fixed guide.