JP2004051263A - Storable crane - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a storable crane capable of providing a space allowing an overhead traveling crane and a forklift truck to be passed therethrough by providing a sufficient working space when the crane is operated and by storing a crane body in proximity to a warehouse wall surface or a column when the crane is stored. <P>SOLUTION: This storable crane comprises at least a pair of running rails 5 fitted to a wall or the column 1 and openably operated in a horizontal direction by gate folding and a crane girder 7 rotatably suspended from the running rail through a trolley. When the running rail 5 is closed, the crane girder 7 is retracted to the lower side of the stored running rail. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a retractable crane, and more particularly, to a retractable crane that can store a crane body, can pass through an overhead crane, a forklift, and the like, and can effectively use a warehouse space.
[0002]
[Prior art]
Conventionally, an overhead crane is provided with a crane runway movably in a horizontal direction along a crane mounting arm attached to a ceiling or a wall surface of a warehouse or the like, and a crane gutter is moved vertically, that is, in a longitudinal direction along the crane runway. What is provided so that movement is possible is known.
[0003]
[Problems to be solved by the invention]
However, the above-mentioned conventional overhead crane is provided with a crane runway movably in a horizontal direction along a crane mounting arm attached to a ceiling or a wall surface of a warehouse or the like. Because the cranes are movably provided, when using a large crane together, the crane mounting arm becomes an obstacle and interferes with each other in each work place, so the large crane cannot be used together and the ceiling space cannot be used effectively. Had. There is also known a retractable crane in which a crane runway is suspended and supported by a plurality of rotation arms attached to a wall so that a crane gutter can be moved along the crane runway. Since the turning arm is rotated in one direction, there is a problem that a space for accommodating the turning arm is required.
[0004]
In order to solve the above-mentioned conventional problems, the present invention provides a pair of traveling rails so as to be openable and closable in a double-opening manner, and suspends both ends of a crane girder on a trolley traveling on the traveling rails, so that the crane can be retracted. By moving the crane gar to the storage position of the travel rail and operating the travel rail in the double-opening closing direction, it can be stored parallel to the vertical plane of the travel rail mounting and vertically aligned, and the effective working space is An object of the present invention is to provide a retractable crane that can be increased and used together with a large crane.
[0005]
[Means for Solving the Problems]
The present invention, as a solution to the above-mentioned problem, is to be mounted on a wall or a column, at least one pair of traveling rails that open and close horizontally in a double-door type in a storage position and an operation position, and each traveling rail through a trolley. A retractable crane having a crane girder whose end is rotatably suspended and retracted below the traveling rail in which the crane girder is stored when the traveling rail is closed to the storage position. I will provide a.
[0006]
Further, according to the present invention, the running rail is suspended from a pair of opening / closing members rotatably mounted on a wall or a support through one end of the running rail via a hinge having a vertical axis. The upper end of one end is rotatably mounted on a wall or a support via a hinge having a longitudinal axis, and the crane gutter is suspended between traveling rails via a rotatable suspension shaft provided on a trolley. Each is provided as one embodiment.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiment 1
1 is a front view showing a retracted state of the retractable crane of the present invention, FIG. 2 is a plan view, FIG. 3 is a side view, FIG. 4 is a plan view showing a crane garter operating, and FIG. 5 is a side view thereof.
[0008]
In the drawing, reference numeral 1 denotes a column standing upright along a wall surface of a warehouse or the like, 2a denotes a beam for attaching an opening / closing member protruding forward from the column 1, and 2b denotes a beam for attaching a turnbuckle. Reference numeral 3 denotes an opening / closing member, which has a shaft attachment portion 3a which is rotatably supported in a horizontal direction by a vertical shaft 9c of a hinge 9a at an end of the beam 2a. Reference numeral 4 denotes a turnbuckle, one end of which is pivotally supported by a connecting pin 4a at an open end of the opening / closing member 3, and the other end is pivotally supported by a hinge 9b which is rotated by a longitudinal axis 9c provided at an end of the beam 2b. ing. The opening / closing member 3 is mounted so as to be rotatable in a horizontal direction in a double-opening manner around a vertical axis 9c of a hinge 9a provided at the end of the beam 2a. Reference numeral 5 denotes a traveling rail suspended from the opening / closing member 3 via a hanging member 6, and the opening / closing operation follows the opening / closing member 3. Reference numeral 7 denotes a crane garage suspended from the traveling rails 5, which is suspended between the traveling rails 5, and which connects the traveling rails 5 and 5. A hoisting device 10 is suspended. The traveling rail 5 has such a length that the trolley 8a can move to the axis center line of the vertical axis 9c. As shown in FIG. 7, the crane gutter 7 is suspended from the traveling rail 5 via a trolley 8a. The trolley 8a is rotatably suspended on traveling wheels 11 traveling on the traveling rail 5 and a trolley body. It has a connecting member 14 that is connected to the provided suspension shaft 12 via a ball bearing 13 provided at a lower end of the suspension shaft 12 and is fixed to an end of the crane gutter 7. The mounting pitch of the trolleys 8a, 8a for suspending and supporting both ends of the crane gutter coincides with the mounting pitch of the longitudinal axes 9c, 9c of the hinges 9a, 9a for suspending and supporting the pair of opening and closing members 3a, 3a. Therefore, the crane gutter 7 is movable along the traveling rail 5 via the trolley 8a. Therefore, when the traveling rail 5 rotates from the retracted state to the operation state in which the traveling rail 5 is opened forward, the crane gutter 7 can smoothly operate along the traveling rail 5 from the retracted state. When storing the clay, the garter rail is moved to a position where the trolleys 8a at both ends are directly below the vertical axis 9c, and the traveling rail is closed linearly in a double door manner.
[0009]
Hereinafter, the operation of the retractable crane according to the present embodiment will be described.
[0010]
1 to 3 show a state in which the traveling rail 5 is stored, and the crane gutter 7 is retracted below the vertical axis 9c of the hinges 9a, 9b on the same vertical plane as the traveling rail 5. 4 and 5 show the operating state of the crane with the opening / closing member 3 and the traveling rail 5 open. When the traveling rail 5 is opened, the crane gutter 7 moves from the retracted position to the operating position via the trolley 8a, and can freely move back and forth along the traveling rail 5.
[0011]
Further, since the hoisting device 10 is suspended from the crane gutter 7 via a trolley, the hoisting device 10 freely moves back and forth, right and left, and performs a lifting operation of the load.
[0012]
Next, the operation at the time of storing the crane will be described.
[0013]
First, the crane gutter 7 is retracted to the storage position, and then the opening member 3 is pushed in the closing direction to complete the storage operation. At this time, the mounting pitch of the ball bearings 13, 13 of the trolleys 8a, 8a that rotatably support both ends of the crane gutter is the same as the mounting pitch of the hinges 9a, 9b, and the ball bearing 13 of the trolley 8a is Since the traveling rail is configured to be movable up to the rotation axis 9c, the operation of the crane gutter is smooth, and the traveling rail can be retracted in a double-opening manner. The traveling line on which one end of the crane girder and its trolley 8a are suspended is moved to the storage position by operating the hoisting line of the hoisting device on which the crane gutter is suspended, and then the hoist is moved to the other traveling rail side. Alternatively, the crane gutter and the traveling rail at the other end may be moved to the storage position, and the storage may be completed in a straight line.
[0014]
Next, when moving the crane to the operating position, the traveling rail 5 is opened in the opening direction by opening the opening / closing member 3 in the opening direction, and the crane is moved by moving the crane gutter 7 along the traveling rail 5. Move to operating position.
[0015]
Embodiment 2
Further, in the above-described embodiment, the traveling rail 5 is configured such that one end thereof is suspended from the opening / closing member 3 rotatably mounted on the wall or the column 1 via the hinge 9 a having the longitudinal axis 9 c. However, as shown in FIG. 6, the shaft attachment portion 3b is directly attached to the upper end of one end of the traveling rail 5, and is mounted on the beam 2a protruding forward from the wall or the support 1 so as to be directly opened and closed via a hinge 9a. You can also. The open end of the running rail 5 is supported by the turnbuckle 4. The connecting portion between the shaft attachment portion 3b and the turnbuckle 4 and the traveling rail suspends the traveling rail by a horizontal axis (not shown) so as to swing. Other configurations of the embodiment shown in FIG. 6 are the same as those of the first embodiment shown in FIGS. According to this configuration, since no opening / closing member is required, the number of components can be reduced.
[0016]
Next, the operation of the storage crane according to the present embodiment will be described. When the pair of traveling rails 5 is pushed in the closing direction from the operation state of the crane shown in FIG. 6, the traveling rails 5 rotate in the closing direction about the longitudinal axis 9c of the hinge 9a, and at the same time, the distal end of the traveling rail 5 The traveling rail 5 also rotates in the closing direction while being supported by the turnbuckle 4, and retreats on the substantially same plane as the vertical plane formed by the longitudinal axis 9c. The crane gutter 7 is stored on the same vertical plane below the travel rail 5 by moving to the storage position of the travel rail 5 as in the first embodiment. The operation of moving the crane to the operation position is the same as in the first embodiment.
[0017]
According to the first and second embodiments, by using the crane gutter as the connecting beam suspended from the traveling rail, the hoisting device can be freely moved back and forth and left and right. In addition, the crane gutter is configured to be connected to the trolley via a rotatable suspension shaft provided on a trolley that travels on the traveling rail and a connecting member, and a hinge and a connection pin for supporting the traveling rail so that the traveling rail can be opened and closed are suspended by the crane gutter. The crane gutter can be stored under the same vertical plane as the traveling rail that is closed in a double door manner in the retracted state because the trolley is arranged above the traveling rail that does not restrict the traveling range of the trolley to be held.
[0018]
【The invention's effect】
According to the present invention, when the crane is working, a sufficient working space can be obtained by opening the traveling rail, and when the crane is retracted, the pair of traveling rails is closed, and the crane gutter is connected to the traveling rail via the trolley. Since it is possible to retreat under the same vertical plane, the working space for storing the crane can be increased, and a space through which an overhead crane and a forklift can pass can be obtained.
[Brief description of the drawings]
FIG. 1 is a front view showing a retracted state of a retractable crane according to an embodiment of the present invention.
FIG. 2 is a plan view of FIG.
FIG. 3 is a side view of FIG. 1;
FIG. 4 is a plan view showing the crane gutter when the traveling rail is opened.
FIG. 5 is a side view of FIG. 4;
FIG. 6 is a side view showing a retractable crane according to another embodiment.
FIG. 7 is an enlarged front view showing the trolley.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Prop 2a, 2b Beam 3a, 3b Opening / closing member 3 Axle attachment part 4 Turnbuckle 4a Connecting pin 5 Running rail 6 Hanging member 7 Crane garter 8a, 8b Trolley 9a, 9b Hinge 9c Vertical axis Hoisting device 11 Wheel 12 Suspension Shaft 13 Ball bearing 14 Connecting member

Claims (4)

At least a pair of traveling rails that are mounted on a wall or a pillar and that open and close horizontally in a storage position and an operating position in a double-opening manner, and each traveling rail has an end rotatably suspended via a trolley. A retractable crane comprising a crane gutter and retracted to a position below the traveling rail in which the crane gutter is stored when the traveling rail is closed at the storage position. The retractable crane according to claim 1, wherein the traveling rail is suspended from a pair of opening and closing members rotatably mounted on a wall or a pillar via one end of the traveling rail via a hinge having a longitudinal axis. 2. The retractable crane according to claim 1, wherein the traveling rail is rotatably mounted on a wall or a column via a hinge having a longitudinal axis at an upper end of one end thereof. The retractable crane according to any one of claims 1 to 3, wherein the crane gutter is suspended from the traveling rail via a rotatable suspension shaft provided on the trolley.

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