JPH092627A - Board material inverter - Google Patents

Abstract

PURPOSE: To perform the inversion of a board material easily and safely without needing special place for inversion such as a sandbox, etc. CONSTITUTION: Portal body 11 hung down by a crane is lowered gradually onto concrete 1, and it is stopped at a specified level. The end of the concrete 1 is retained by a board material retaining means 20 provided under each pole 13, and in this condition, the body 11 is lifted up. When it is lifted to fixed level, it is stopped in its position, and the board material retaining means 20 is inverted by driving a board material inverter 27.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate material reversing device for reversing a large and heavy plate material such as precast concrete.

[0002]

2. Description of the Related Art Cleaning of the front and back surfaces of precast concrete (hereinafter abbreviated as concrete), which is a construction equipment,
When conducting inspections and repairs, it is necessary to invert concrete. Therefore, conventionally, as shown in FIG. 7, concrete 1 is laid on a ground surface 2 such as a sandbox, and one end of a rope 4 is connected to one end thereof through a hook 3 such as a hanging bolt,
The rope 4 was pulled upward to raise the concrete 1 and then tilted to the other side to invert it, or the rope was connected to both ends of the concrete 1 to suspend the concrete 1 and invert it in the air.

[0003]

However, in the above-mentioned conventional reversing work using the rope 4, the operator operates the winch or the like to pull the rope 4 and gradually tilt the concrete 1 to the opposite side by hand. Because I need to go
It is time-consuming, and it is dangerous if the rope 4 breaks and falls, and concrete 1 is cracked,
There was a problem of damage. There is also a problem that a reversal place such as a sandbox must be secured in order to prevent damage to the concrete 1.

The present invention has been made in order to solve the above-mentioned conventional problems, and the purpose thereof is to eliminate the need to secure a special reversing place such as a sandbox and to easily perform the reversing work of the plate material. It is an object of the present invention to provide a plate material reversing device that can be safely carried out.

[0005]

In order to achieve the above object, a plate material reversing device according to the present invention comprises a horizontal member and a pair of upper end portions movably held at both ends of the horizontal member and extending downward. A main body formed in a gate shape with a pillar,
A column driving device for moving each of the columns in a direction toward and away from each other along the horizontal member, and a pair of bearings for supporting the lower end portions of the columns and supporting each other so as to rotate on the same axis line. The plate material holding means and the plate material reversing drive device for rotating the plate material holding means are provided.

[0006]

In the present invention, the gate-shaped main body is suspended in the air by a crane or the like. The pair of plate material holding means,
The plate material held is reversed by being rotated by a predetermined angle by the plate material inverting drive device. The pair of columns are moved toward and away from each other along the horizontal member according to the size of the plate material, and the distance between them changes.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings. 1 is a front view showing an embodiment of a plate material reversing device according to the present invention, FIG. 2 is a side view of the device, FIG. 3 is a sectional view showing a mounting structure of plate material holding means, and FIG. 4 is a part of a pad. FIG. 5 is a partially cutaway front view showing the same pad, and FIG. 6 is an enlarged sectional view showing the same pad cut along the line VI-VI in FIG. In these drawings, the plate reversing device 10 includes a gate-shaped main body 11 that is suspended by a crane or the like. The gate-shaped main body 11 includes a horizontal member 12 formed of a hollow body having a rectangular cross section, and a pair of left and right members provided at both ends of the horizontal member 12 so as to be movable in the longitudinal direction of the horizontal member 12 along rails (not shown). It is composed of columns 13 and 13. A horizontal member 1 is provided at the upper end of each column 13.
Openings (not shown) through which 2 is inserted are provided respectively. On the lower surface of the horizontal member 12, a pair of left and right pillar drive devices 1 for moving the respective pillars 13 along the horizontal member 12.
4, 14 are attached. The column drive device 14 is composed of a hydraulic cylinder, and is composed of a cylinder body 14a and a rod 14b provided on the cylinder body 14a so as to be movable back and forth. The base of the cylinder body 14a is connected to a cylinder mounting member 15 fixed to the center of the lower surface of the horizontal member 12 in the longitudinal direction. On the other hand, the rod 14b
The outer end portion protruding from the cylinder body 14 a of the bracket 1 is attached to the inner surface of the upper end portion of the corresponding strut 13.
6. Therefore, when the left and right pillar driving devices 14 and 14 are respectively driven to expand and contract the rods 14b, the pair of left and right pillars 13 and 13 approaches or separates from each other, whereby the space between the pillars 13 should be reversed. Can be changed according to the size of.

On the front and rear surfaces of the horizontal member 12,
A pair of left and right hooks 17 are provided equidistantly from the center of the horizontal member 12 to the left and right, and a wire 18 for suspending the plate reversing device 10 is hung on these hooks 17.

At the lower end of each of the columns 13, plate holding means 20, 20 for holding the end of the concrete 1 are provided rotatably with their axes aligned so that they face each other. The plate member holding means 20 has a hollow shaft 22 as shown in FIG.
And a sliding shaft 23 which is prevented from rotating by the hollow shaft 22 and slidably penetrates, and a connecting pin 2 at the front end of the sliding shaft 23.
The pad 25 is connected by 4 and holds the end portion of the concrete 1, and a pad advancing / retreating drive device 26 for moving the pad 25 in the front-rear direction (axial direction of the sliding shaft 23). The hollow shaft 22 is rotatably supported by a cylindrical bearing member 21 penetrating the lower end of the support column 13 and prevented from moving in the axial direction, and the plate material is reversed when the concrete 1 is reversed. The drive device 27 is configured to rotate 180 ° counterclockwise in FIG.

4 to 6, the pad 25 is
The pad main body 25A is provided. The pad body 25A is
The plate material reversing device 10 is formed of an extruded shape member having a rectangular cross-section extending in the front-rear direction, and the central portion of the back surface thereof is connected to the front end of the sliding shaft 23 via the connecting pin 24. On the upper and lower surfaces of the pad body 25A, a plurality of holding members 27, 28 that oppose each other vertically and sandwich the end of the concrete 1 to prevent the concrete 1 from falling are provided at appropriate intervals in the longitudinal direction of the pad body 25A. They are lined up side by side. One end of each holding member 27, 28 is fixed to the upper and lower surfaces of the pad body 25A by welding or the like, and the other end forms bent portions 27a, 28a that are inclined upward and downward by a predetermined angle. And extends in front of the pad body 25A. These bent portions 27a, 2
Synthetic resin guide members 29 for guiding the concrete 1 are fixed to the surfaces of the 8a facing each other. Further, a protective plate 30 made of synthetic resin and formed in a plate shape is also fixed to the front surface of the pad body 25A. The pad main body 25A is attached to each end of the pad main body 25A.
A holding plate 31 that extends in the longitudinal direction of A and holds the front and rear ends of the concrete 1 is provided. The holding plate 31 is formed in a U-shape when viewed from the side, and thus includes a vertical plate portion 31a and horizontal plate portions 31b and 31c that are vertically opposed to each other and that are arranged at the upper and lower ends of the vertical plate portion 31a. The end portion of the concrete 1 is inserted between the plate portions 31b and 31c. The inner surface of the vertical plate portion 31a and the front surface of the pad body 25A form the same plane, and the protection plate 30 is fixed to these surfaces. The horizontal flat plate portions 31b and 31c are provided with stopper pins 32 that restrict the positional displacement of the concrete 1 in the front-rear direction so that the stopper pins 32 can be inserted and removed. The stopper pin 32 includes horizontal plate portions 31b, 31.
A plurality of pin holes 33 formed in the holding plate 31 at the same pitch in the longitudinal direction of the holding plate 31 are selectively inserted according to the size of the concrete 1.

In FIG. 2, the plate material reversing drive device 27 for rotating the plate material holding means 20 to invert the concrete 1 is a pair of hydraulic cylinders 27A arranged in parallel along the outer surface of the column 13 and driven alternately. , 27B. These hydraulic cylinders 27A, 27B are mounted substantially vertically with their cylinder bodies 27a facing upward, and the lower ends of rods 27b are connected to each other by a chain 36. The chain 36 meshes with the teeth 37a of the chain wheel 37 fixed to the rear end of the hollow shaft 22 shown in FIG. Each hydraulic cylinder 2
The drive stroke of 7A and 27B is the chain wheel 3
It is equal to the half circumference of the pitch circle of 7. FIG. 2 shows a state in which one hydraulic cylinder 27A is driven to shorten the rod 27a and the plate material holding means 20 is held horizontally. In this state, the other hydraulic cylinder 27B is
It is not driven, and its rod 27b is extended by the drive of one hydraulic cylinder 27A. From this state, when driving of one hydraulic cylinder 27A is stopped and the other hydraulic cylinder 27B is driven to move the rod 27b upward, the chain 36 causes the chain wheel 37 to move.
In order to rotate 180 ° in the counterclockwise direction, the hollow shaft 22 and the sliding shaft 23 rotate integrally with the hollow shaft 22 and the sliding shaft 23 to rotate the plate member holding means 20 180 °. Therefore, the plate material holding member 20 is inverted. When returning from the inverted state to the original state, the driving of the other hydraulic cylinder 27B may be stopped and the one hydraulic cylinder 27A may be driven. As a result, the hollow shaft 22 and the sliding shaft 23 rotate 180 ° in the direction opposite to the above-described direction, and the plate member holding means 20 is rotated.
Return to the original state. In addition, the plate material reversing drive device 27,
It goes without saying that they are provided on the left and right columns 13, respectively, and operate in conjunction with each other. However, it is also possible to provide only on one of the columns 13.

In FIG. 3, the pad advancing / retreating drive device 26 comprises a hydraulic cylinder and its cylinder body 26a.
Is fixed to the rear end of the hollow shaft 22, and the rod 26
The outer end of b is connected to the rear end surface of the sliding shaft 23.
When the driving device 26 is driven to cause the rod 26b to project,
The sliding shaft 23 moves forward along the hollow shaft 22, and the pad 2
Allows the concrete 1 to be held by 5.

Referring again to FIG. 1, when the concrete 1 is held on the front surface of each of the columns 13 by the plate member holding means 20, a height detecting mechanism 4 for detecting the height of the concrete 1.
0 is provided respectively. This height detection mechanism 40
Is a hydraulic cylinder 41 in which the upper end of the cylinder body 41a is rotatably supported in the left-right direction by a shaft 42 on the front surface of the column 13 and is attached downward.
Lever 41 connected to the rod 41a of the second lever 4 and the second lever 4 connected to the first lever 43 via a link 44
5 and a rotatable roller 46 provided at the tip of the second lever 45. The first lever 43 is bent in a V-shape when viewed from the front.
Is rotatably pivoted in the left-right direction by a pin shaft 47 protruding from the front surface of the rod 41, one end of which is pin-connected to the lower end of the rod 41b and the other end of which the upper end of the link 44 is also pin-connected. The second lever 45 has an intermediate portion rotatably connected to the lower end of the link 44 by a pin 48, one end connected to the support column 13 via a connecting pin 49, and the roller 45 provided at the other end. There is. The height detection mechanism 40 having such a structure is normally stored along the front surface of the support column 13 by shortening the rod 41b of the hydraulic cylinder 41 and raising the second lever 45 as shown by the chain double-dashed line. The concrete 1 and the plate reversing device 10
When the rod 41b is extended during the suspension by the second lever 45, the second lever 45 moves above the concrete 1 and is set and held in the height detectable state indicated by the solid line. When the main body 11 is gradually lowered above the concrete 1 in this state, the roller 46 comes into contact with the upper surface of the concrete 1, and it is confirmed that the heights of the concrete 1 and the plate member holding means 20 are the same.

Inside the horizontal member 12, an oil tank 50 and a motor pump 51 for supplying oil to the respective driving devices 14, 26, 27, 41 are incorporated. A control unit 52 that drives and controls the entire apparatus is incorporated in one of the columns 13. In FIG. 1, reference numeral 53 is a cover that covers the plate material reversing drive device 27, 54 is a base that supports the concrete 1, and 56 and 57 are sensors that detect the stored state and the used state of the height detection mechanism 40, respectively.

Next, the plate reversing device 10 having the above structure.
The reversing operation of the concrete 1 will be described. First, the concrete 1 whose front and back surfaces are to be reversed is placed on the table 54. Next, putt 2 according to the thickness of concrete 1
Select 5 and replace. To replace the pad 25, the connecting pin 24 shown in FIG. 3 may be removed to remove the pad 25 from the sliding shaft 23, and another pad matching the size of the concrete 1 may be connected to the sliding shaft 23 by the connecting pin 24. .
Further, the stopper pin 32 is inserted into the pin hole 33 at a position corresponding to the size of the concrete 1. Then, the hydraulic cylinder 41 is driven to set the height detecting mechanism 40 to the height detectable state shown by the solid line in FIG.

Next, the wire 18 is pulled up by the crane to suspend the main body 11. In addition, the device 1 for driving the column
4, the columns 13 and 13 are moved and adjusted to set the interval between the left and right pads 25 to be larger than the width of the concrete 1. In this case, the left and right hydraulic cylinders 14, 14 are independently driven to move the column 13. In this case, by moving each of the columns 13 independently, even if the center of gravity of the concrete 1 to be inverted is not in the center, the center of gravity of the entire main body 11 including the concrete 1 can be aligned with the center of the main body 11.

After the columns 13 are moved to set the gap between the pads 25 larger than the width of the concrete 1, the main body 11 is gradually lowered above the concrete 1 while maintaining this state, and the height detecting mechanism is set. When the roller 46 of 40 is brought into contact with the upper surface of the concrete 1, the heights of the putt 25 and the concrete 1 match. When the roller 46 comes into contact with the concrete 1, the lowering of the main body 11 is stopped and the pad advancing / retreating drive device 26 is driven to move the pad 25 forward, thereby holding the end portion of the concrete 1. When the pad 25 holds the concrete 1, in this state, the main body 11 is pulled up to a height sufficient to invert the concrete 1 and stopped. Then, in this state, when the hydraulic cylinder 27 is driven to rotate the chain wheel 37 counterclockwise by 180 ° in FIG. 2, the pad 25 rotates integrally with the hollow shaft 22 and the sliding shaft 23. 1 can be inverted. After the inversion, the main body 11 is gradually lowered to return the concrete 1 to the table 54. It should be noted that all such inversion operations are performed by remote operation using the push button switch 58 shown in FIG.

A plate material reversing device 10 having such a structure.
According to the above, since the concrete 1 is inverted in the air, it is not necessary to secure a reversal place such as a sandbox, and the concrete 1 can be inverted anywhere if there is a space necessary for the reversal. Further, since the worker only has to remotely operate the plate material reversing device 10 suspended by the crane, the reversing work is easy and safe.

In this embodiment, an example in which hydraulic cylinders are used as the strut driving device 13, the pad advancing / retreating driving device 26, and the plate material reversing driving device 27 has been described, but the present invention is not limited thereto. An air cylinder, a drive motor, or the like may be used without being specified. Further, in this embodiment, the height of the concrete 1 is detected by the height detection mechanism 4
Although it is detected mechanically by 0, it may be detected electrically by using a switch, or by using a light receiving or emitting element. Furthermore, although the present invention has been described with respect to an example in which it is applied to the precast concrete 1 as a plate material, it is not limited to this and various steel plates,
It may be a plate material such as a panel.

[0020]

As described above, according to the plate material reversing device of the present invention, the plate material is held by the plate material holding means,
Since it is configured to be inverted in the air, it does not require a reversal place such as a sandbox, and is safe and can be inverted without damaging or damaging the plate material.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a plate material reversing device according to the present invention.

FIG. 2 is a side view of the device.

FIG. 3 is a cross-sectional view showing a mounting structure of a plate material holding means.

FIG. 4 is a front view showing a part of the pad in a cutaway manner.

FIG. 5 is a plan view of a part of the pad.

FIG. 6 is an enlarged cross-sectional view of the same pad cut along a line VI-VI in FIG.

FIG. 7 is a diagram showing a conventional inversion method.

[Explanation of symbols]

1 ... Precast concrete, 10 ... Plate reversing device,
11 ... Main body, 12 ... Horizontal member, 14 ... Strut drive device,
20 ... Plate material holding means, 25 ... Pad, 27 ... Plate material reversing drive device, 40 ... Height detection mechanism.

Claims (1)

[Claims] 1. A main body formed in a gate shape by a horizontal member and a pair of pillars each having an upper end movably held at both ends of the horizontal member and extending downward, and each of the pillars. A column driving device for moving in a direction toward and away from each other, and a pair of plate material holding means for holding the plate material that are supported by the lower end portions of the both columns so as to face each other so as to rotate on the same axis; A plate material reversing device, comprising: a plate material reversing drive device for rotating the plate material holding means.