JPH0442305Y2 - - Google Patents

Description

[Detailed explanation of the idea]

[Industrial Application Field] The present invention relates to an anti-slip suction pad used when adsorbing and transporting refractory bricks (hereinafter referred to as bricks). [Prior Art] Large bricks have come to be used for the refractory lining of converters (steel-making furnaces) in steel plants to extend their lifespans, and it has become extremely difficult to manually transport and lay the bricks. Therefore, various mechanical devices came to be used for bricklaying work. FIG. 3 shows an example of this, in which a pedestal 3 is suspended in the furnace by a chain block 2 fixed to a beam 1, and the pedestal 3 is suspended from the furnace wall by an outrigger 4.
It is fixed by pressing. A free balancer 6 is movably held on the lower surface of the pedestal 3, and a grip 7 is attached to the tip of an arm 6a of the free balancer 6. free balancer 6
The tip of the arm 6a can be freely raised and lowered with the operating lever, and the tip of the arm 6a can be moved horizontally and rotated manually, so the brick 8 held by the grip 7 can be moved freely with a light force. can be moved to any position. Bricks 8 to be lined are usually loaded on pallets 9 and hoisted 10
It is now brought into the hearth from the street. The bricks 8 carried in are held by the grips 7 of the free balancer 6, transported to a predetermined stacking position, and lined. At this time, when lining the wall 5, the bricks 8 are stacked horizontally, so the bricks 8 loaded on the pallet 9 can be transported in that position to the lining position, but in the case of the hearth bottom, the bricks 8 are stacked vertically. In order to do this, it is necessary to transport the bricks 8 loaded on the pallet 9 to the lining position in that position, turn them by 90 degrees, and perform the lining. Incidentally, as the grip 7 to be attached to the tip of the free balancer 6, the structure shown in FIGS. 4a to 4d is known. That is, the grip 7 shown in FIG. 4a is of a mechanical clamp type, and the brick 8 is held by a lever 11. The grip 7 shown in FIG. 7B is of an air clamp type, and compressed air is sent to an air pad provided on the inner surface of the grip 7 to clamp the brick 8. The grip 7 shown in figure c is an automatic type in which the brick 8 is held between left and right hook members 12 and 13, and the grip 7 shown in figure d is a vacuum suction type. The bricks 8 are held by suction through the pads 14. As mentioned above, grips 7 of various structures are employed. By the way, for the lining work of converters, etc., the vacuum adsorption type shown in Figure 4 d is most often used, taking into consideration the speed of desorption, adaptability by changing the shape of the bricks, and restrictions on retention and desorption. has been done. This vacuum suction type grip 7 allows the brick 8 to be easily attached and detached (it can be easily attached and detached by operating the intake and exhaust valves), and there is no need to change the suction pad 14 even if the shape of the brick 8 changes somewhat. do not have. The bricks 8 stacked on the pallet 9 in close contact can be removed. It has the advantage that it can be lined in close contact with the bricks 8 that have already been lined. [Problems to be solved by the invention] However, in the case of this vacuum suction type grip 7, the bricks 8 stacked on pallets, such as the bottom lining of a converter, are held by suction;
It is not possible to tilt the suction pad 14 by 90 degrees and place the brick 8 vertically. That is, the suction pad 14
When the brick 8 is tilted from the horizontal direction to the vertical direction, slipping occurs between the suction surface of the brick 8 and the suction pad 14, and the brick 8 cannot be held. For this reason, conventionally the bricks 8 stacked on the pallet 9
After adsorbing the bricks and temporarily placing them near the lining position, the bricks 8 are manually raised 90 degrees and lined. This manual work was extremely hard work when the bricks 8 were large, and the efficiency of the lining work was poor. An object of the present invention is to provide a suction pad that can suction horizontally and reliably hold bricks even when tilted vertically. [Means for solving the problem] The present invention is a suction pad in which a base hardware is tiltably attached to the tip of a conveyor whose tip is movable, such as a free balancer. It has a structure in which a spike made of carbide material with an acute angle tip is removably attached to the inner side of the rubber pad. [Function] As described above, since the suction pad according to the present invention has a structure with spikes, when the rubber pad is pressed against a brick and suctioned, the tip is made of a carbide material with an acute angle. The tip of the spike gets stuck in the brick. For this reason, even if a brick that has been sucked in a horizontal position is tilted vertically, the brick will not slip off the suction surface and can be held securely. [Example] Hereinafter, details of the present invention will be explained using examples shown in the drawings. 1A and 1B are views showing an embodiment of the suction pad according to the present invention, and FIG. 2 is a view showing a tilting device for the suction pad. As shown in FIG. 2, the suction pad 15 is held by a tilting frame 16 so as to be rotatable and slidable up and down. The tilting frame 16 is the main frame 1
The suction pad 15 is fixed to a rotating shaft 18a of a rotating device 18 fixed to the suction pad 7, and the suction pad 15 can be tilted by rotation of the rotating shaft 18a. The main frame 17 is fixed to the tip of the arm of the free balancer 19. An operation box 20 is attached to the main frame 17, and an operation lever 20a, a suction button 21, a release button 22, a forward rotation button 23, and a reverse rotation button are attached to the operation box 20. The operation lever 20a is for raising and lowering the arm of the freebacer 19, and the suction button 21 and the detachment button 22 are operation buttons for suctioning and detaching bricks from the suction pad 15. The reverse rotation button 24 is an operation button for rotating the suction pad 15 forward and reverse. Note that the rotating device 1
8 is configured so that it can be rotated by an air source, a hydraulic source, electricity, or the like. The structure of the suction pad 15 will be explained in more detail using FIGS. 1a and 1b. The suction pad 15 has a base hardware 25 attached to the tilting frame 16 attached to the tip of the free balancer 19.
It is configured such that it is rotatably engaged with and slidably in the vertical direction. A rubber pad 26 is attached to the base hardware 25 with a bolt 28 via a presser plate 27. Further, an intake/exhaust pipe 29 is connected to the base hardware 25, and an opening 2 of the intake/exhaust pipe 29 is connected to the base hardware 25.
9a communicates with the inner chamber 30 of the rubber pad 26. Although not shown, the intake and exhaust pipe 29 communicates with the vacuum pump and the atmosphere via a solenoid valve.
It communicates with a vacuum pump when adsorbing bricks, and communicates with the atmosphere when removing bricks. Spikes 31 are easily attached to and detached from the holding plate 27 by screwing or the like, and the spikes 31 attract the bricks and have the effect of preventing slipping when the bricks are tilted. In addition, it is necessary to attach one or more spikes 31 to the holding plate 27, and in order to stably hold the bricks when suctioning, four or more spikes 31 must be attached to the holding plate 27.
It is better to install more than Also, spike 31
The length H is the rubber pad 2 for better adsorption.
It is best to set the depth to about 1/3 of the depth L of 6. Various combinations can be made of the material and shape of the spikes 31;
Made of carbide material with a sharp tip. As the material, cemented carbide steel or ceramic can be used. spike 3
As for the shape of No. 1, the tip can be shaped like a needle point, a knife shape, a sawtooth shape, or the like. Further, since the spikes 31 are attached to the holding plate 27 in a structure that is easily attached and detached by screwing, etc., the spikes 31 can be easily replaced according to the number of spikes 31, the material, and the type of brick. Next, the suction action of the suction pad 15 configured as described above will be explained. After pressing the rubber pad 26 against the brick, the brick is sucked into the rubber pad 26 by suction with a vacuum pump through the suction and exhaust pipe 29. During this suction, the rubber pad 26 is elastically deformed and the brick is pressed against the spike 31, so that the tip of the spike 31 sinks into the surface of the brick, but into a slight recess. Therefore, even if the rubber pad 26 is tilted 90 degrees (vertically), the bricks will not slip off the rubber pad 26 and will be held securely. The results of a comparative test between the anti-slip suction pad 15 of the present invention and the conventional suction pad 14 are described below. Test conditions Vacuum during suction 500mmHg Brick used Graphite firebrick (surface friction coefficient 0.2) Anti-slip suction pad
Size: 100 x 300 mm (oval type) Spike shape: Needle tip Spike material: Hard steel Number of spikes: 4 Conventional suction pads
Size 100 x 300mm (oval shape)

[Table] [Effects] As described above, the suction pad according to the present invention can hold the bricks suctioned in a horizontal position without slipping even when tilted vertically, so it has the following effects. () When stacking bricks vertically, such as at the bottom of a converter,
Free balancer (conveyor) directly without human intervention
Since the lining can be done using the same method, the work load is reduced and work efficiency is improved. () Due to the adsorption method, bricks can be quickly attached and detached, and even if the shape of the brick changes, there is no need to replace the rubber pads, so work efficiency is good. () The spikes can be easily replaced depending on the material of the brick (object to be transported).

[Brief explanation of drawings]

Figures 1a and b are a plan view and a side view showing an embodiment of a suction pad according to the present invention, Figure 2 is a schematic side view of a tilting device for the suction pad, and Figure 3 is a converter furnace. Explanatory diagram of the operation when lining the bottom, Figure 4a~
d is a schematic configuration diagram showing an example of a conventional grip. 15...Adsorption pad, 19...Free balancer, 25...Base hardware, 26...Rubber pad,
30...Inner room, 31...Spike.

Claims (1)

[Scope of utility model registration request] In a suction pad in which a base hardware is tiltably attached to the tip of a conveyor whose tip is movable, a spike made of a carbide material with an acute tip is attached to the inner chamber side of the rubber pad fixed to the base metal. A suction pad characterized by a detachable attachment.