JP3738433B2 - Heavy goods moving device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heavy material extrusion technique suitable for an extrusion method or the like.
[0002]
[Prior art]
As a method of reducing the horizontal movement force of heavy objects such as precast plates and steel materials, it is known to set the coefficient of friction between the conveyance path and the contact part of heavy objects as small as represented by rollers and various fluid casters. ing.
[0003]
[Problems to be solved by the invention]
If priority is given to reducing the moving force and the friction coefficient is made smaller, it is necessary to take measures against braking heavy objects. Conversely, if the friction coefficient is increased in consideration of the braking ability of heavy objects, there is a problem that the moving force increases. In addition, there has not yet been proposed a technique that can economically move and stop heavy objects on an inclined conveyance path.
[0004]
The present invention has been made in view of the above points, and an object of the present invention is a heavy goods movement technology that can control both movement and braking according to heavy goods to satisfy both economy and safety. It is to provide.
[0005]
[Means for solving problems]
The present invention provides a heavy load moving device that moves by applying a moving force to a heavy load placed on a conveyance path, and a fixed support that supports a body weight by contacting a part of the heavy load,
A vertically movable moving scaffold for supporting a portion of the skeleton body mass when moving heavy objects on the floor portion of the conveyance path, multiple distribution and set along the moving direction, wherein one of the scaffold and a heavy The friction coefficient of each support body is set to a different combination so that any one of the other support bodies performs a braking action with the heavy object, and the weight of the heavy object by the movable support body is reduced. The heavy-weight moving device is configured to be capable of adjusting a braking force of a heavy load by controlling a pressing force to the lower surface .
[0006]
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0007]
<A> Moving Device FIG. 1 is a model diagram of a moving device, showing a longitudinal section of a conveyance path 20 on which a heavy article 10 is placed. The heavy object 10 is a concrete structure, for example, and the bottom surface thereof is covered with a steel material 11. On the transport surface of the transport path 20, a plurality of fixed support bodies 30 and movable support bodies 40, which are combined with greatly different friction coefficients, are arranged along the moving direction.
[0008]
<B> Fixed bearing body The fixed bearing body 30 is made of concrete having a large friction coefficient with respect to the steel material 11 and is in partial contact with the bottom steel material 11 of the heavy object 10 to constantly support the weight of the heavy object 10. It plays a braking action when moving.
When the conveyance path 20 is inclined, the dynamic friction coefficient between the steel plate 11 and the fixed support body 30 is set so that the loaded heavy object 10 does not slide out due to its own weight during movement.
[0009]
<C> Movable bearing body The movable bearing body 40 is composed of an elevating part 41 that reduces friction during movement, and an elevating means 42 such as a fluid cylinder or a screw mechanism that moves the elevating part 41 up and down. Sometimes the elevating part 41 rises and partially contacts the bottom steel material 11 to support part of the weight of the heavy object 10. For example, a known roller or a device capable of forming a fluid film is incorporated in the elevating / lowering portion 41, or a low friction process such as fluororesin processing is performed, so that the friction coefficient (static / dynamic friction coefficient) with the heavy object 10 is ) Is set to be small.
[0010]
<D> Movement of Heavy Object The lifting means 42 of the movable support body 40 is extended to bring the lifting part 41 into contact with the bottom steel material 11 of the heavy object 10 so that most of the weight of the heavy object 10 is supported. In this case, a part (for example, 3%) of the weight of the heavy object 10 is supported by the fixed support 30, and most of the weight (for example, 97%) of the heavy object 10 is supported by the movable support 40.
In addition to the fixed support body 30 group, the movable support body 40 performs shared support, so that the weight of the casing loaded on the fixed support body 30 is reduced. As a result, the frictional resistance between the fixed support body 30 and the heavy object 10 is reduced. Compared with the case where there is no shared support of the movable support body 40, the moving force of the heavy object 10 becomes smaller during the movement as well as when the heavy object 10 starts to move.
[0011]
The moving force at this time depends on the support rate of the weight of the heavy object 10 by the movable support 40, the number of movable support 40 installed, and the steel material 11 at the bottom of the heavy object 10 and the material of each of the support bodies 30 and 40. It is obtained from the coefficient of friction.
[0012]
In addition, as a moving means of the heavy article 10, you may push out with the fluid cylinder etc. from the back of the heavy article 10, or you may pull by a winch etc.
[0013]
<E> With drop operation of the movable bearing member 40 during braking also move, is supposed to bear a precursor weight of heavy 10 only in a fixed bearing body 30 group, the friction between the fixed bearing body 30 and the heavy 1 0 As a result of the increase in resistance , a braking force acts on the heavy article 10.
[0014]
In particular, even when the conveying path 20 is inclined, it is possible to raise the movable support body 40 to reduce the moving force as described above, and to lower the movable support body 40 to generate a braking force. The movement of the heavy object 10 can be controlled safely with a small movement force.
[0015]
Second Embodiment of the Invention
Although the above description has been given of the case where the fixed bearing 30 is given a braking action and the movable bearing 40 is given a friction reducing action, the action of each of the bearings 30 and 40 is reversed so that the fixed bearing 30 has a friction coefficient. A friction reducing action may be imparted using a small material, and a braking action may be imparted to the movable support body 40 using a material having a large friction coefficient.
[0016]
Further, as shown in FIG. 2, a rail-made fixed support body 30 is laid along the moving direction of the conveyance path 20, and a plurality of movable support bodies 40 are spaced between the fixed support bodies 30 and 30 at a predetermined interval. May be arranged. In this embodiment, since the movable support body 40 can be used as a braking device, the braking force can be adjusted by controlling the lifting force of the lifting and lowering portion 41, and the lifting and lowering means 42 having a small capacity can be used. There is an advantage that it can respond. In particular, when the transport path 20 is inclined, the heavy object 10 can be moved more safely.
In the present embodiment, the fixed support 30 supports most (eg, 97%) of the weight of the heavy object 10 and the movable support 40 provides the remaining weight (eg, 3%) of the heavy object 10. Share and support.
[0017]
As described above, whether the respective bearing bodies 30 and 40 are used for the friction reducing action or the braking action depends on the weight burden ratio of the heavy object 10 by the respective bearing bodies 30 and 40, the inclination angle of the conveyance path 20, and the like. It may be selected as appropriate in consideration.
[0018]
[Effect of the present invention]
<A> Not only can a heavy object be moved with a small force, but also it can be braked, so that it can be moved safely and economically.
In particular, even in an inclined conveyance path that has been considered extremely dangerous to move so far, it is only necessary to control the moving force within a range in which the heavy object does not slide out due to its own weight, so that the heavy object can be moved safely.
<B> It is economical that the elevating part of the fixed support body and the movable support body can be made of an inexpensive material such as iron or concrete.
<C> Since the control target of the frictional force is only the pressing force by the movable support body, not only the control is simplified, but also the design corresponding to the moving means of the heavy object can be performed.
<D> Since the movable support body itself does not aim at lifting heavy objects, the lift stroke of the movable support body can be as small as several tens of millimeters.
[Brief description of the drawings]
FIGS. 1A and 1B are explanatory views according to Embodiment 1 of the present invention, in which FIG. 1A is a longitudinal sectional view of a heavy load and a conveyance path when a heavy load is supported only by a fixed support group, and FIG. FIG. 2 is a cross-sectional view taken along the line BB in the longitudinal cross-sectional view (A) of the heavy load and the conveyance path when the heavy load is supported by the fixed support body. Is a plan view of the transport path, (B) is a cross-sectional view of BB in (A)
DESCRIPTION OF SYMBOLS 10 Heavy object 11 Steel material 20 Conveyance path 30 Fixed support body 40 Movable support body 41 Lifting part 42 Lifting means

Claims (1)

In the heavy goods moving device that moves by applying a moving force to the heavy goods placed on the conveyance path,
A fixed support body that contacts a part of a heavy object and supports the weight of the housing;
A skeleton weight of the part supporting a vertically movable moving scaffold when moving heavy objects on the floor portion of the transport path, and a plurality arranged along the moving direction,
The friction coefficient of each support body is different so that either one of the support bodies performs a friction reducing action with a heavy object and the other support body performs a braking action with a heavy object. As a combination,
By controlling the pressing force to the lower surface of the heavy load by the movable support body, the braking force of the heavy load is configured to be adjustable ,
Heavy goods moving device.

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