JPH0228421B2 - UOOKINGUBAASOCHI - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a walking bar device used for straightening, drawing out, or as a guide for slabs in the horizontal portion of curved continuous casting equipment or horizontal continuous casting equipment. Two groups of bars, an outer bar and an inner bar, are provided on the upper and lower sides, and these two groups of bars are driven alternately to clamp the slab, transport the clamped slab forward, and then remove the bar from the slab. is released so that only the bar returns to its original position.

Conventionally, this type of walking bar device has two groups of bars above and two groups of bars below the slab, which are assembled together, resulting in a large assembly weight, and the crane used to lift the equipment has a large capacity. was necessary.
In addition, the bars above and below the slab are used to hold the slab to a predetermined thickness in order to prevent the slab from blistering due to static iron pressure. If it was lowered too much, there was a drawback that no clamping force was applied to the slab. Furthermore, since the conventional walking bar device simply consists of two groups of bars in the upper and lower directions of the slab mounted on a frame, the walking bar device itself is bent due to the bending of the slab. There was a risk of it being lifted.

In order to eliminate the above-mentioned conventional drawbacks, the present invention provides a walking method in which the upper and lower surfaces of a slab are alternately clamped and released by a pair of upper and lower outer bars and inner bars, and the bars are reciprocated in the direction of movement of the slab. The bar device includes a drive source, an input shaft which is oscillated and rotated by the drive source, and which is driven by the input shaft and is arranged to be swingable about a fulcrum in a direction perpendicular to the axial direction of the input shaft. an interlocking lever; an upper eccentric shaft that supports the upper outer bar and to which the swinging motion of the interlocking lever is transmitted; and an upper eccentric shaft that supports the lower outer bar and that is connected to the upper eccentric shaft of the outer bar; A lower eccentric shaft connected by a connecting member and rotationally driven by the drive source, an upper eccentric shaft that supports the upper inner bar and to which the swinging motion of the interlocking lever is transmitted, and the lower inner bar. a pair of gates provided on both sides of the bar; A lower eccentric shaft of both bars is provided between the lower part of the shaped frame, and the lower ends of the lower outer bar and inner bar are slidably placed on a rotatable roller provided on the lower eccentric shaft,
The upper eccentric shafts of both bars are suspended via rods from the upper frame which is removably installed between the upper parts of the pair of gate-shaped frames, and the rotatable rollers provided on the upper eccentric shafts are suspended. A walking bar device that is slidably pressed against the lower surface of the upper frame, and pivot joints provided at the upper ends of the upper outer bar and inner bar are rotatably attached to the upper eccentric shaft. This is a new creation.

Therefore, according to the slab walking bar device according to the present invention, (1) the upper and lower inner and outer bars can be easily separated online, so that they can be easily processed using existing roll segment lifting cranes; (2) Since the span between each bearing of the inner and outer bars supported on the eccentric shaft can be shortened, the parts of each part of the eccentric shaft can be made smaller and the weight can be reduced; (3) The upper and lower parts of the cast slab can be The bars in each of the two groups in each direction are built into a fixed gate-shaped frame, so the bars do not lift up and are sturdy. (4) The lower bar of the slab is separated from the drive eccentric shaft, so there is no need for cutting and disconnecting work when maintaining, disassembling and assembling the bar; (5) The upper part is easily attached to and detached from the portal frame. By assembling the frame vertically movably using springs or hydraulic cylinders, it is possible to perform static iron pressure plus light reduction of slabs.

The present invention will be specifically explained below based on illustrated embodiments.

FIGS. 1 and 2 show the front and plane views of the entire walking bar type slab drawing device.
This drawing device is shown as a horizontal drive type device that pinches the horizontal portion of the slab that is bent in the horizontal direction after being pulled downward from the mold of the continuous casting equipment and transports it forward.

The basic structure of this pulling device includes a walking bar body 4, a drive device 1 for driving the walking bar body 4, and a drive device 1 that transmits the power of the drive device 1 to the walking bar body 4 to move each walking bar up and down. Clamp cam mechanism 2 for movement
and a propulsion cam mechanism 3 for transmitting the power of the drive device 1 to the walking bar main body 4 to drive each walking bar in the advancing direction of the slab B to transport the slab B forward. A split drive stand 5 is attached to the clamp cam mechanism 2.

First, the walking bar main body portion 4 will be explained.

3 is a sectional view taken along the line -- in FIG. 2, FIG. 4 is a side view of FIG. 3, and FIG. 5 is a sectional view taken along the line V--V in FIG. 3.

As shown in Fig. 3, the walking bar main body 4 consists of a pair of gates in which walking bars 6, 6...:7, 7... are arranged on both sides of the slab B, which are positioned above and below the slab B passing through. It has inside the shaped frames 80,80. The walking bar is composed of two groups of bars, one at the top and one at the bottom, as shown by two numerals 6 and 7 in the figure. The walking bars 6 and 7 of each group are arranged alternately, and the walking bar designated by numeral 6 is referred to as an outer bar, and the walking bar designated by 7 is referred to as an inner bar. In each of the upper and lower
The group of outer bars 6 and the group of inner bars 7 each operate integrally. The walking bars 6 and 7 of each group move toward and away from the slab B in the vertical direction.
It is designed to perform reciprocating motion along the direction of travel. Also, the upper group of outer bars 6 and the lower group of outer bars 6 form a pair, and the upper group of inner bars 7 and the lower group of inner bars 7 form a group,
Each set is designed to sandwich and transport the slab B. Each of the walking bars 6 and 7 is provided with a contact plate 8 on the surface facing the slab B, and comes into contact with the slab B via the corresponding contact plate 8. As shown in FIG.
is connected to the backstays 10, 10, the lower group of outer bars 6 are connected to the backstays 11, 11, and the lower group of inner bars 7 are connected to the backstays 12, 10.
12, each of which is assembled into one piece.

As shown in Figures 3, 4, 5, and 10, a pair of gate-shaped frames 80, 80 are symmetrical rods fixed to a base so as to surround the slab passage on both sides of the slab B. The four lower eccentric shafts 13, 14, 15, 16 are connected to a pair of bearings 13a, 14a, 15a, respectively, between the lower support frames 80a, 80a provided inside the gate-shaped frame on both sides. , 16a, and support columns 81, 81 are provided on the upper portions of the gate-shaped frames 80, 80 on both sides, respectively.
4 is placed on a rack and fixed with a mounting means such as a nut 82,
and 4 in the upper frame 84 as detailed below.
The upper eccentric shafts 17, 18, 19, 20 of the book are rotatably supported via support rods 21, 22, 23, 24 and a pair of guide rollers 25, 25, respectively, so that the gate-shaped frames 80, 80 A set of four eccentric shafts 13...20 are supported parallel to each other on the upper and lower sides. That is, the lower eccentric shaft 1
3, 14, 15, 16 are connected to the lower support frames 80a, 8 of the portal frames 80, 80 on both sides by supporting bearings 13a, 14a, 15a, 16a provided at both ends thereof.
0a and a pair of rotatable guide rollers 26, 26 provided inside the sliding rollers 26, 26 provided on the lower surfaces of the backstays 11, 12 of the lower group of outer bars 6 or inner bars 7 described above. Part 11a,
12a is placed slidably in the front direction. Therefore, the backstay 11 of the lower set of outer bars 6
The backstays 12 of a pair of inner bars 7 are mounted and supported on the rollers 26 of the corresponding lower eccentric shafts 13, 14, 15, 16, respectively.
3, 14, 15, and 16, the distance at which the support bearing 13a and the roller 26 are eccentric
The lower outer bar 6 and inner bar 7 are moved up and down by being vertically displaced by _X1 and the displacement due to the rocking rotation. Three columns 81 are provided on the upper surfaces of the upper support frames 80b, 80b of the portal frames 80, 80, respectively.
are installed, their tips are passed through the mounting holes 84a of the upper frame 84, and the upper frame 84 is fixed to the support column 81 by screwing nuts 82. Therefore, the upper frame 84 is installed over the portal frames 80, 80 on both sides, and is positioned above the upper group of outer bars 6 and inner bars 7,
The supporting rods 21, 22, 23, 24 disposed above the center of each of the outer bars 6, 7 are passed through the through holes 84a formed in the upper frame 84 in the vertical direction, and the rods 21, 22, 23 , 24 and the upper frame with a spring 85 interposed between them and the mounting screw 8.
6 suspends the rods 21, 22, 23, 24 below the upper frame 84, and
Bearing casings 21a, 22 at the lower ends of 22, 23, 24
a, 23a, 24a are integrally provided, and the upper eccentric shaft 1 is mounted on the bearing housings 21a, 22a, 23a, 24a.
7, 18, 19, and 20 are rotatably supported. The upper eccentric shafts 17, 18, 19, 20 have their central portions enclosed in rod bearing casings 21a, 22, respectively.
The upper frame 84 is supported by a, 23a, and 24a.
The rotatable guide rollers 25, 25, which are horizontally arranged approximately parallel to the lower surface and provided at both ends thereof, are made to correspond to the horizontal sliding surfaces 84b, 84b provided on the lower surface of the upper frame 84, respectively. Rod 21,
The rods 21, 22, 23, 24 springs 85
22, 23, 24 together with upper eccentric shafts 17, 18,
When the upper eccentric shafts 17, 18, 19, 20 are lifted upward, the rollers 25, 25 are slidably pressed against the sliding surfaces 84b, 84b, and the upper eccentric shafts 17, 18, 19, 20 are held at a fixed position. Upper eccentric shaft 1
7, 18, 19, 20 are provided with a pair of rotatable support bearing housings 27, 27 inside the rollers 25, 25, and the upper outer bar 6 or inner bar 6 corresponds to the lower end of the support bearing housings 27, 27, respectively. The backstays 9, 10, 11, 12 of the bar 7 are integrally formed, and the upper outer bar 6 or inner bar 7 is connected to the upper eccentric shaft 17,
Rods 21, 22, 2 via 18, 19, 20
3 and 24 so that it can be attached integrally.
In other words, the upper outer bar 6 or inner bar 7 has a corresponding upper eccentric shaft 17, 18, 19, 20, respectively.
The upper eccentric shafts 17, 18, 19,
20 is suspended from the upper frame 84 via rods 21, 22, 23, 24, and the roller 25 is attached to the sliding surface 84b of the upper frame 84 by a spring 85.
In order to be pressed into contact with the upper outer bar 6 or the inner bar 7, each bar of the upper outer bar 6 or the inner bar 7 is held below the upper frame 84 together with the upper eccentric shafts 17, 18, 19, 20, and each upper eccentric shaft 17, 18, 19, 20, the supporting bearing housings 27, 27 and rollers 25, 25 are vertically displaced by the eccentric distance X ₂ and the displacement due to the oscillating rotation, and the lower outer bar 6 and inner The bar 7 begins to move up and down. As mentioned above, the backstays 9 to 12 of each bar are rotatably suspended on these eccentric shafts 13 to 20, and the shaft center O of each support bearing 27 of the eccentric shafts 13 to 20 is the shaft center of the corresponding roller 25. Since it is eccentric on both sides with respect to O', each eccentric shaft 13~
When the backstay 20 swings and rotates about the axis O', each of the backstays 9 to 12 can move up and down together with the outer bar 6 and the inner bar 7, in other words, can move toward and away from the slab B.

Note that the lower eccentric shafts 13, 14, 15, 1
6 corresponds to inner bar 7 and outer bar 6, respectively.
Each pair is connected in series by tie rods 28 and 29. That is, as shown in FIG. 9, the eccentric shaft 13 is configured to perform rocking rotation similar to that of the shaft 14 via a tie rod 28. Similarly, the 15th eccentric shaft is also caused to swing and rotate in the same manner as the 16th eccentric shaft via the tie rod 29. As shown in FIG. 3, each tie rod (see 28 in FIG. 3) has a pivot portion at each end thereof, which pivot portion is attached to each eccentric shaft (see 13 in FIG. 3). connected. Therefore, the external inputs are only 13, 16 and 14,
No. 16 shaft does not require an input shaft end, and the input shaft end can be cut off at a portion that does not interfere with the portal frame.

In Fig. 9, the lower eccentric shaft 1 which is the input shaft
The inputs input to 6 and 13 are, respectively,
Lower eccentric shaft 15, via tie rods 29, 28
14 respectively.

In the above configuration, each eccentric shaft 13 to 20 is
The clamp cam mechanism swings and rotates at a constant angle θ, and this rotation causes the outer bar 6 and the inner bar 7 to
act to alternately clamp and release slab B.

On the other hand, the walking bar main body 4 includes a reciprocating motion transmission mechanism for propelling the outer bar 6 and the inner bar 7 in the advancing direction of the slab B when these bars clamp the slab B. That is, the third
As clearly shown in Fig. 4, a pair of input shafts 30 and 31 are provided on one side of the upper frame 84, and are driven to swing and rotate within a certain angle range by a propulsion cam mechanism 3, which will be described in detail later. A lever 32 that rotates integrally with the input shafts 30, 31 is provided on the outer periphery of each input shaft 30, 31, and the other end of this lever 32 is attached to one side of the frame 84 with a pin 34 so that it can swing freely. It is connected to the upper end of the attached interlocking lever 33, and the lower end of the interlocking lever 33 is rotatably connected to the upper eccentric shaft 17 or 20 via the lever 35, while the upper eccentric shaft 17, 19 and the lower eccentric Axis 14,1
6, the inner bar 7 and the outer bar 6 are connected in series by a pair of connecting levers 36, 37, respectively, so that the inner bar 7 and the outer bar 6 connect these connecting members each as a group through
That is, the upper and lower outer bars 6 or the upper and lower inner bars 7
are the rollers 25 of the eccentric shafts 13 to 20 corresponding to the rollers 25,
26 to the backstay 11a or the upper frame 84
A series of slabs B are slid on the sliding surface 84b of
The robots are interlocked to perform reciprocating motion along the direction of travel. Therefore, in this structure, when each input shaft 30, 31 is rocked and rotated within a certain angle range, a pair of levers 32, 33 on both sides
35 swings about each pin 34 as a fulcrum, and by swinging the levers 32, 33, 35, the upper eccentric shaft 20
or 17 slides its roller 25 on the sliding surface 84b of the upper frame 84 and moves along the advancing direction of the slab B, and at the same time, the lower eccentric shafts 13 to 16 move through the connecting levers 36 and 37. The sliding portion 11 of the backstays 11 and 12 corresponding to the roller 26
A and 12a, while sliding it on the slab B, similarly moves along the advancing direction of the slab B.

The driving of the eccentric shafts 13 to 20 will be described in further detail. For this explanation, the eccentric shaft drive portion of FIG. 4 is shown in FIG. By swinging and rotating the input shaft 31, the interlocking lever 33 swings and rotates via the lever 32 as shown. And interlocking lever 3
3 causes the eccentric shaft 20 to reciprocate. At this time, since the eccentric shaft 20 is pressed against the sliding surface 84b by the spring 85, it does not move up and down, but only reciprocates in the left and right directions. Further, since the eccentric shaft 20 is connected to the upper backstay 9, by connecting the upper and lower backstays 9 and 11 with the connecting lever 36, the lower backstay 11 is caused to reciprocate by the reciprocating movement of the upper eccentric shaft 20. At this time, since the lower backstay 11 is pressed against the lower eccentric shaft 16 by its own weight via the sliding surface 11a, it only performs reciprocating motion. Therefore, when the eccentric shaft 20 moves on one input shaft 31, the inner bar 7 moves, and when the eccentric shaft 17 moves on the other input shaft 30, the outer bar 6 moves together. become. And this movement is performed by the outer bar 6 or the inner bar 7.
are assembled so that when the slab B is clamped, they move in the advancing direction of the slab, and when the slab B is released, they return to the origin.

Note that the reciprocating motion transmission mechanism includes, for example, levers 32, 3.
By removing the pin 34 that pivotally connects the shafts 3 and 35, the edges of each eccentric shaft can be cut. To disassemble the walking bar device, remove the pin 34, remove the mounting nut 82 of the upper frame 84, and then remove the connecting levers 36, 37 and cut the edges with the lower bars 6, 7. Then Rod 21, 22,
23 and 24 from the hydraulic cylinder or spring 85 lifting device of the upper frame 84, and the upper bar of the slab is placed on the lower bar, and the upper frame 84 is removed.

The bar above the slab is then easily removed since it is only placed on the bar below the slab. Further, since the bar below the slab is only placed on the rollers 26 of the lower eccentric shafts 17 to 20 to which the portal frame 80 is attached, it can be easily removed.

Now, next, each of the eccentric shafts 17 to 20 of the walking bar main body 4 and the pair of input shafts 30, 31
A drive system, that is, a drive device 1 for driving the
The clamp cam mechanism 2 and the propulsion cam mechanism 3 will be described.

FIG. 6 shows a diagram of the propulsion cam mechanism 3 and the clamp cam mechanism 2, respectively.

The camshaft 40 of the propulsion cam mechanism 3, the camshaft of the clamp cam mechanism 2, and the drive rotation shaft of the drive device 1 are arranged in a straight line and connected to each other by couplings.

First, as the clamp cam mechanism 2, an outer bar cam 41 that is involved in driving the outer bar 6, an inner bar cam 43 that is involved in driving the inner bar 7, and a balance cam 42 are attached to the cam shaft 40. ing. On the other hand, four clamp shafts 47, 48, 55, 56 are provided in parallel above the cam shaft, and each of these clamp shafts 47, 48, 55, 56 can be rotated within a certain angle range by rotating the cam shaft. It is designed to rotate. When the camshaft rotates, the rotation of the outer bar cam 41 and inner bar cam 43 attached thereto is controlled by levers 45 and rods 46 that rotatably fix the lower part of each cam follower 44.
are transmitted to the outer bar clamp shaft 47 and the inner bar clamp shaft 48, respectively, and the outer bar clamp shaft 47 and the inner bar clamp shaft 48 rotate by a fixed angle, respectively. Each of the above clamp shafts 47,
Each hydraulic cylinder 50 is attached to one end of 48 via a lever 49. Each hydraulic cylinder 50 continues to press each cam follower 44 against each cam 41 and 43 by continuously pressing its cylinder rod with a constant pressure.

The rotation of the outer bar clamp shaft 47 is transmitted to another clamp shaft 55 via the lever 51 and the rod 53, and the clamp shaft 55 rotates in the same manner as the clamp shaft 47. Further, the rotation of the inner bar clamp shaft 48 is similarly transmitted to another clamp shaft 56 via the lever 52 and the rod 54, and the clamp shaft 56 performs the same rotation as the clamp shaft 48.

Each of the clamp shafts 47, 48, 55, 56 is connected to each eccentric shaft 1 via a universal spindle.
Connected to 7, 20, 18, 19. In other words, each eccentric shaft 17, 20, 18, 19 is driven in the vertical direction together with each clamp shaft 47, 48, 55, 56 by the rotational force of the camshaft and the pressing force of the hydraulic cylinder 50.

The balance cam 42 is used to minimize the fluctuating drive torque by offsetting the main clamp drive torque and the propulsion cam torque described below. It is designed to press and control the torque of the camshaft.

Next, based on FIG. 6, as the propulsion cam mechanism 3,
An outer bar cam 61 and an inner bar cam 62 are fixed to the camshaft 40. In addition, the camshaft 40
An outer bar propulsion shaft 66 and an inner bar propulsion shaft 67 are provided above and parallel to this. These propulsion shafts 66, 67 are connected to respective input shafts 30, 31 of the walking bar main body 4 via couplings.

The above-mentioned outer bar cam 61 and inner bar cam 62
is transmitted to the outer bar propulsion shaft 66 and the inner bar propulsion shaft 67 through levers 64 and rods 65, respectively, which rotatably fix the lower part of each cam follower 63, and each propulsion shaft 66, 67 is rotated within a certain angle range. It is designed to oscillate and rotate.

A hydraulic ram cylinder 68 is attached to one end of each propulsion shaft 66, 67 via a lever 69. Each hydraulic ram cylinder 68 always presses one end of each propulsion shaft 66, 67, and presses each cam follower 63 against each cam 61, 62. With this configuration, each of the propulsion shafts 66 and 67 reciprocates within a certain angle range every time the camshaft 40 rotates once, so that the input shafts 30 and 31 The outer bar 6 and the inner bar 7 reciprocate along the moving direction of the slab B through the above.

Further, the divided drive stand 5 is a clamp shaft stand for further dividing the swinging rotation of the shafts 48, 47, and the swinging rotation of the shafts 48, 47 is controlled by the levers 70, 70.
1 and 72, the shafts 73 and 74 are caused to swing and rotate. Similarly, the oscillating rotation of the shafts 73, 74 causes the eccentric shafts 13, 16 to perform oscillating rotation via the shafts 77, 78 via gear couplings.

In addition, in the above embodiment, the rods 21, 22, 23,
The spring 85 that lifts the rod 24 may use a hydraulic cylinder or the like to lift the rod by holding it against the upper frame with a constant hydraulic pressure. Further, in the above embodiment, the upper frame 84 is connected to the column 81 of the portal frame 80.
It is fixed to the tip of the frame with a nut 82, but as shown in FIG.
A hydraulic cylinder 90 may be used between the upper frame 84 and the support column 81 with a constant hydraulic pressure to push the upper frame 84 down within a constant stroke range. That is, the upper frame 84 is made vertically slidable by penetrating the strut 81 through its through-hole 84a, and a hydraulic cylinder 90 consisting of a piston 91 and a cylinder 92 is provided at the distal end 81 of the penetrating strut, and the upper end of the piston 91 is connected to the strut. While contacting the nut 82 at the tip, the lower end of the cylinder 92 is brought into contact with the upper frame 8.
When the upper frame 84 comes into contact with the upper surface of the upper frame 84 and a certain amount of oil pressure is applied to the cylinder, the upper frame 84 is pushed downward via the cylinder 92 by the oil pressure. Instead of fixing the upper frame with a nut, a hydraulic cylinder 90 is installed at the bottom of the nut, and the upper frame 84 is pressed down with a constant hydraulic pressure by the static iron pressure of the slab plus a light pressure downward load, thereby attaching a bar to the slab. A rolling force can be applied. That is, a spacer 93 is provided in the part of the support column 81 between the portal frame 80 and the upper frame 84 to determine the limit to which the bar on the upper part of the slab moves downward, and at the same time, the limit to which the upper frame 84 moves upward is determined at the upper part of the support column 81. It is fixed with nuts etc. for positioning.

The dimensions of these upper and lower limit positions, that is, the gap between the spacer 93 and the upper frame, need to be smaller than the opening of the bar and the vertical movement of the clamp due to the rocking rotation of the eccentric shaft. This is because if it is larger than this, even when the bar is in the open state, the bar will be pushed down by the cylinder and the bar will not be released from the slab.

As is clear from the specific description of the above embodiments,
According to the present invention, an outer bar and an inner bar located below the slab are used as a walking bar device that clamps and releases the slab in the horizontal portion of a continuous steel casting apparatus, and performs reciprocating motion in the moving direction of the slab. Two groups of bars are placed on rollers with an eccentric shaft supported on a portal frame, while two groups of bars, an outer bar and an inner bar, are mounted on and removed from the top of the portal frame. The structure of the walking bar body is unique because it is easily assembled into the upper frame and attached to an eccentric shaft that is pulled up by a spring or a hydraulic cylinder, so that each of the bars in the upper group is restrained in the height direction. It gets easier.

Further, the present invention can be used as a walking bar device.
Two groups of outer bars and two inner bars in the upper or lower direction of the slab are attached via a portal frame, while two groups of outer bars and two inner bars in the upper direction of the slab are attached through a portal frame.
The group bar is characterized by a structure in which the upper frame of the portal frame is pushed downward by a spring or a hydraulic cylinder to less than the thickness of the slab. By applying a reduction, the slab can be transported without any hindrance by following changes in the thickness of the slab.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, FIGS. 1 and 2 are an overall front view and an overall plan view of a walking bar type slab drawing device, and FIG.
4 is a side view taken from the - line in FIG. 3, FIG. 5 is a sectional view taken along line V-V in FIG. 3, and FIG. 6 shows the propulsion cam mechanism and clamp cam mechanism in FIG. 1. Figure 7 is a partially enlarged sectional view showing a modification of Figure 3, Figure 8 is an explanatory diagram of the mechanism for reciprocating the eccentric shaft, and Figure 9 is transmission of input from the input shaft to the eccentric shaft. FIG. 10 is an explanatory diagram showing a state in which the eccentric shaft is connected by a tie rod. 1... Drive device, 2... Clamp cam mechanism, 3
...Propulsion cam mechanism, 4... Walking bar main body, 6, 7... Walking bar, 8... Cooling plate, 9-12... Back stay, 13-20...
Eccentric shaft, 25, 26...Guide roller, 30, 3
1... Input shaft, 84... Frame, O... Axis center of eccentric shaft, O'... Axis center of guide roller, B... Slab.

Claims (1)

[Claims] 1. While the upper and lower surfaces of the slab B are alternately clamped and released by a pair of upper and lower outer bars 6 and inner bars 7, the bars 6 and 7 are reciprocated in the direction of movement of the slab B. The walking bar device includes a drive source 1, an input shaft 31 that is oscillated and rotated by the drive source 1, and a fulcrum 34 that is driven by the input shaft 31 and is perpendicular to the axial direction of the input shaft 31.
an interlocking lever 33 arranged to be able to swing around;
Upper eccentric shaft 1 that supports the upper outer bar 6 and to which the swinging motion of the interlocking lever 33 is transmitted.
7, 18, and a lower eccentric shaft that supports the lower outer bar 6, is connected to the upper eccentric shafts 17, 18 of the outer bar 6 by an outer bar connecting member 36, and is rotationally driven by the drive source 1. 13,14
, upper eccentric shafts 19 and 20 that support the upper inner bar 7 and to which the swinging motion of the interlocking lever 33 is transmitted; Axis 19, 20
and lower eccentric shafts 15, 16 connected by an inner bar connecting member 37 and rotationally driven by the drive source 1.
and lower eccentric shafts 13, 14, 15, 16 of the bars 6, 7 are provided between the lower portions of a pair of portal frames 80 provided on both sides of the bars 6, 7, The lower ends of the lower outer bar 6 and inner bar 7 are slidably placed on rotatable rollers 26 provided on the lower eccentric shafts 13, 14, 15, 16, while the lower ends of the pair of portal frames 80 are Rods 21, 22, 2 are attached to the upper frame 84, which is removably provided between the upper parts.
The upper eccentric shafts 17, 18, 19, 20 of both bars 6, 7 are suspended through the upper eccentric shafts 17, 18, 19, 20, and the rotatable rollers 25 provided on the upper eccentric shafts 17, 18, 19, 20 are suspended from the upper eccentric shafts 17, 18, 19, 20 through the upper eccentric shafts 17, 18, 19, 20. While being slidably pressed against the lower surface of the frame 84, the upper eccentric shafts 17, 18,
A walking bar device characterized in that pivot parts 27 provided at the upper ends of an upper outer bar 6 and an upper inner bar 7 are rotatably attached to 19 and 20. 2. In the device as set forth in claim 1 above, the column 81 of the portal frame 80 is movably inserted into the through hole 84a of the upper frame 84 and is capable of contacting the upper frame 84. and a stopper 93 that restricts the downward movement of the upper frame 84 upon contact with the portal frame 8.
0, while the above upper frame 84
A walking bar device characterized in that it is provided with means 90 for pressing downward.