JPS632845B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rollover device for rolling over a long heavy object such as an H-type steel or an I-type steel.

When processing the above-mentioned long heavy object, there are cases where it is desired to carry out a predetermined processing while standing upright, and then perform processing in the next step while the object is turned sideways by 90 degrees.

In such cases, the following conventional techniques have been used.

As one of them, a turning arm that rotates a long heavy object upward and an L-shaped turning arm that receives the long heavy object rotated upward are separated into separate turning arm devices and L-shaped turning arm devices. There was a structure in which it was driven by (see Japanese Patent Application Laid-Open No. 79479/1983).

This method requires a large number of special parts and mechanisms, and has the drawback of being complex and expensive.

In addition, as another conventional technology, a fixed shaft supported by a frame has a bent part of a first L-shaped lever that rotates a long heavy object upward, and a second lever that receives the long heavy object that has been rotated upward. The lower end of the lever is rotatably connected, and the lower end of the second link and the upper end of the curved first link are rotatably connected to the lower end of the L-shaped first lever and the center part of the second lever, respectively. , second
There was a structure in which the upper end of the link and the lower end of the first curved link were rotatably connected to each other, and a fluid pressure cylinder device was connected to this connecting part. reference).

This has the advantage of having a small number of parts and a simple structure, but when the L-shaped first lever rotates the long heavy object upward, the curved part of the curved first link comes into contact with the fixed shaft. , the fixed shaft is used as a fulcrum for rotation, which has the drawback of increasing rotational moment and requiring large amounts of power.

SUMMARY OF THE INVENTION An object of the present invention is to obtain a device for rolling over long heavy objects that eliminates the above-mentioned drawbacks.

In order to achieve the above object, the present invention is characterized by the following configuration.

That is, one end of a pair of arms is rotatably connected to a support shaft provided at the top of the frame in close proximity to each other, and a rail extending crosswise to the support shaft below the support shaft is connected in the vertical direction. An L-shaped cam body, which is fixed to the frame with an inclination to The upper end of the short side and the upper end of the long side of the cam body are brought into contact with each other so that they can move and rotate along one arm and the other arm, respectively, and a reciprocating mechanism is connected to the corner of the cam body. A device for overturning long heavy objects.

Hereinafter, an embodiment in which the above configuration is embodied will be described based on the drawings.

First, in the drawings, FIG. 1 is a plan view showing an embodiment of the rollover device according to the present invention, FIG. 2 is a partially sectional left side view thereof, and FIG. 3 is a main part of a state in which a long heavy object is placed. FIG. 4 is a partially cutaway sectional front view of the main part showing its operating state. Reference numeral 1 denotes a frame, which is formed into a rectangular parallelepiped by connecting front and rear plates 2 and 3 and left and right side plates 4 and 5 to each other.

The frame 1 has wheels 6 attached to its lower part, and is placed on a moving rail 8 attached to the upper surface of a base frame 7 via the wheels, so that it can be moved in the left-right direction.

A support shaft 9 is fixed to the upper left part of the frame 1 so as to extend in the front-rear direction, and a pair of arms made of H-shaped steel extend from the support shaft 9 in the left-right direction. The arm 10 and the right arm 11 are each attached rotatably.

The left arm 10 is supported by the left side plate 4 in a horizontal state, and the right arm is supported in a horizontal state by a cross plate 12 spanning between the front and rear plates 2 and 3.

Further, a pair of groove-shaped rails 13 are fixed to the front and rear plates 2 and 3 of the frame 1 at a portion located below the support shaft 9 so as to face each other.

The rail 13 intersects the support shaft from the left and right directions, and is inclined at about 45 degrees with respect to the horizontal plane so that the right end is low and the left end is high.

14 is a cam body formed in a scalene L shape;
It is arranged so as to expand upward below the support shaft 9 and the left and right arms 10 and 11.

As shown in FIG. 3, the cam body 14 has a pair of rollers 15 rotatably attached to its corners, and the rollers 15 are rotatably fitted to the pair of rails 13 described above, so that the cam body 14 can be attached to the rails. 13.

Further, the left side 14a of the cam body 14 is made longer, and the roller 16 is mounted on the upper end thereof, and the roller 16 is brought into rolling contact with the lower surface of the left arm 10, and the right side 14b is made shorter than the left side 14a. A roller 17 is mounted on the upper end thereof, and the roller 17 is brought into rollable contact with the lower surface of the right arm 11.

In the figure, 18 and 19 are shafts attached to the cam body 14 to support the rollers 16 and 17, and 20 and 21 are guides attached to the left and right arms 10 and 11 to guide the shafts 18 and 19. It is a metal fitting.

Next, a reciprocating mechanism 22 is installed in the right side of the frame 1 mentioned above. The reciprocating mechanism 22 includes a screw-type telescoping body 23 extending in the left-right direction, and a forward/reverse type motor 24 attached to the right end of the telescoping body 23 to telescopically operate the telescoping body 23. , stretchable body 2
The right end of the case 23a of No. 3 is rotatably connected to the frame 1 via the support pin 25, and the telescopic body 23
The left end of the movable rod 23b is bent upward into an L-shape, and the left end is rotatably connected to the corner of the cam body 14 via a pin 26.

Next, the operation of the above embodiment will be explained.

First, the rollover device according to this embodiment is installed on the left and right arms 1 in the direction of movement of the roller conveyor (not shown).
0 and 11 are arranged so that they are perpendicular to each other, and the long heavy object 27 is conveyed by the roller conveyor.
(H-shaped steel in this example) is placed directly above the left arm 10 (Fig. 3),
The motor 24 is started to rotate normally so that the movable rod 23b of the actuating body 23 is extended.

As a result, the cam body 14 has its corner portion at the third position.
In Figure 4, the roller 15 is pressed to the left.
It is moved to the left while moving upward along the rail 13 via.

Due to the above movement, the left side 14a and right side 14b are
While moving to the left, the left and right arms 10 and 11 are connected via rollers 16 and 17 attached to their respective upper ends.
will be pressed upward, but the right side 1 on the short side
4b has a larger rising angle than the long left side 14a, the upward force exerted on the left and right arms 10 and 11 by the pressing force of the movable rod 23b is larger on the right side 14b. Furthermore, a long heavy object 27 is placed on the upper surface of the left arm 10 that is pressed by the left side 14a.

Therefore, at the beginning of the extension of the movable rod 23b, the left side 14a of the cam body 14 moves leftward in the horizontal direction, the right side 14b moves upward and leftward, and only the right arm 11 rotates upward. I will do it.

In the above state, when the roller 17 on the right side 14b approaches the support shaft 9 by a predetermined value, the reaction force of the right arm 11 increases, so that the right side 14b
Further upward movement of b is prevented, and this time the left side 1
4a will be moved upward (states shown by the solid line and the dashed-dotted line in FIG. 4).

Then, when the situation reached the state shown by the dashed-dotted line in Figure 4,
The long heavy object placed on the left arm 10 is overturned 90 degrees to the right from the state shown in FIG. 3 due to its own weight, and is placed on the right arm 11.

When the movable rod 23b further extends from this state, the left side 14a of the cam body 14 has a larger rising angle than the right side 14b, and the long heavy object 2
7 is placed on the right side, and the pin 26 connecting the cam body 14 and the movable rod 23b is attached to the support shaft 9.
By moving leftward from the left arm 10, etc.
gradually rises toward the vertical direction, and the right arm 11 gradually returns toward the horizontal direction (the state indicated by the two-dot chain line in FIG. 4).

When the movable rod is finally extended, the left arm 10 becomes vertical and the right arm becomes horizontal and supported by the cross plate 12, as shown by the two-dot chain line in FIG.

In this example, as shown in FIG. 3, the first stopper mechanism 28 is attached to the shaft 18 provided on the left arm 14a.
is provided, and when the left arm 10 stands vertically,
Prevents further excessive rotation.

That is, an elongated sheet metal plate is rotatably attached to the shaft 18 at its center, and an engaging pawl 28a that can be engaged with the left end of the left arm 10 is provided at its left end.

In the first stopper mechanism 28, when the left arm 10 is in a horizontal state, that is, when the cam body 14 is located on the right side, the engaging claw 28a is retracted to the lower surface of the left arm 10 (in the solid line state in Fig. 3). ) When the left arm 10 stands up, that is, when the cam body 14 is positioned to the left, the engaging claw 28a projects leftward from the left arm 10 and engages with the left end of the engaging claw 28a. the state shown by the two-dot chain line in the same figure).

Further, in this example, when the left arm 10 is in the horizontal state, the right arm 11 is allowed to stand up and rotate, but when the right arm 11 returns to the horizontal state with the left arm 10 in the upright state, the right arm 11 is allowed to stand up and rotate. A second stopper mechanism 29 is provided to prevent rotation.

That is, as shown in FIG. 4, a push rod 30 is attached to the frame 1 so as to be horizontally slidable, an engagement pin 31 is attached to the right end of the engagement pin 31 so as to be retractable from the cross plate 12, and the left end of the push rod 30 is attached to a crank. A pin is connected to the upper right side of the oscillating body 32.

The rocking body 32 has its lower right side connected to the frame 1.
The sensing body 33 is rotatably connected with a pin to the upper end of the left side thereof, and a sensing body 33 is fixedly protruding upward. A spring 34 that presses the left side of the rocking body 32 upward and a spring 35 that presses the upper end of the right side of the rocking body rightward are provided, respectively, and these springs 33 and 34 constantly press the push rod 30 to the right. to strengthen

The sensing body 33 is vertically adjustable, and when the left arm 10 is in a horizontal state, it comes into contact with the lower surface of the left arm 10 and is pressed downward, thereby causing the rocking body 32 to rotate to the left in the figure. As a result, the push rod 30 and the engagement pin 31 are moved to the left.

An engaging piece 36 that can engage with the engaging pin 31 is provided at the lower right end of the right arm 11.

As is clear from the above explanation, according to the configuration of the present invention, the reciprocating mechanism can be moved forward (extension operation).
By doing so, the short side of the cam body first rotates one arm upward by a predetermined angle, and then the long side of the cam body rotates the other arm upward,
Next, the long side side causes the other arm to stand up and rotate largely in the vertical direction, while the end side gradually restores one arm to the horizontal direction.

Therefore, the long heavy object placed on the other arm at the beginning of the reciprocation is smoothly overturned by reciprocating the reciprocating mechanism.

In addition, when the forward movement mechanism returns (shortening operation), a long heavy object is placed on one arm, so
The short side of the cam body simply moves horizontally along the lower surface of one of the arms in the horizontal state, and the long side moves horizontally and downward.

It should be noted that if a second stopper mechanism is provided as in this embodiment, it is safe because one arm is reliably held in a horizontal state during the backward movement of the reciprocating mechanism.

As explained above, according to the present invention, a long heavy object is placed on one arm located at the upper end of the rail, and the corner of the cam body is moved upward along the rail by the reciprocating mechanism. As a result, the side of the cam body corresponding to the one arm is laterally separated from the spindle supporting the cam body, and then rotates upward about the spindle.

Therefore, the present invention has the effect that the capacity (power) of the reciprocating mechanism for overturning a long heavy object can be reduced, and the number of mechanisms used can be reduced to a minimum of one, thereby reducing the cost of the entire device. play.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an embodiment of the rollover device according to the present invention, Fig. 2 is a partially sectional left side view thereof, and Fig. 3 is a sectional front view of the main part with a long heavy object placed on it.
FIG. 4 is a partially cutaway sectional front view of the main part showing its operating state. DESCRIPTION OF SYMBOLS 1...Frame, 6...Wheel, 7...Base frame, 8...Movement rail, 9...Spindle, 10...
...Left arm, 11...Right arm, 12...Cross plate, 13...Rail, 14...Cam body, 1
5-17...Roller, 18/19...Shaft, 20/
21... Guide metal fitting, 22... Reciprocating mechanism, 23
...Stretchable body, 23a...Case, 23b...Movable rod, 25...Support pin, 26...Pin, 28
...first stopper mechanism, 28a...engaging claw, 29
...Second stopper mechanism, 30...Press rod, 31
...Engaging pin, 32... Rocking body, 33... Sensing body, 34, 35... Spring, 36... Engaging piece.

Claims (1)

[Claims] 1 One end of a pair of arms is rotatably connected to a support shaft provided at the top of the frame in close proximity to each other, and a rail extending crosswise to the support shaft below the support shaft is vertically connected. An L-shaped cam body that is tilted and fixed to the frame and expands upward is placed below the support shaft and each arm, and the corners of the cam body can be moved and rotated along the rail. The upper end of the short side and the upper end of the long side of the cam body are brought into contact with each other so as to be movable along one arm and the other arm, respectively, and a reciprocating mechanism is connected to the corner of the cam body. A device for overturning long heavy objects.