JPS5853360A - Walking bar type drawing device for ingot - Google Patents

Abstract

PURPOSE:To simplify the construction in the body parts of walking bars by moving the walking bars in vertical and ingot moving directions by the rovolution and movement of eccentric shafts thefeby grasping and transferring the ingot. CONSTITUTION:Eccentric shafts 17-20 which are movable in rotating and ingot B moving directions on the frame 84 in the body parts 4 of walking bars rock and revolve around an axial center O' in a specified angle range. Then upper back stays 9-12 and lower back stays 13-16 via tie rods 22-25 which are respectively freely rtatable around the eccentric axes of the axial centers O, O'' offcentered on both sides of the center O' are moved vertically alternately. Thus outer, inner bars 6, 7 respectively at the top and bottom incorporated into the styas 9-16 grasp and release an ingot B alternately. On the other hand, when respective input shafts 29 are rocked and rotated in a specified angle range by thrust cam mechanisms, a pair of levers 36, 35 rock with pins 37 as a fulcrum, and the shaft 20 or 17 moves along the advancing direction of the ingot B, thus moving the bar 7 or 6. The movements thereof are so combined that all the bars move in the advancing direction of the ingot during grasping of the ingot and are reset to the origins when the ingot is released.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a billet drawing device with a walking bar in continuous casting equipment.

The present applicant has already provided various billet pulling devices with a walking bar as a means for pulling or transferring the billet discharged from the mold downward in continuous casting equipment.

This walking bar set slab pulling device is equipped with two groups of bars, an outer bar and an inner bar, at the bottom of the slab to be pulled out, and these two groups of bars are driven alternately to move the slab forward. The outer bar and the inner bar are designed to both clamp the slab and carry the clamped slab a certain distance forward.
It is desired that the structure of the conventional slab drawing device with a walking bar be further simplified in terms of the mechanism for performing these two movements, and it is also desirable to further simplify the installation and removal of the walking bar. It was rare.

The present invention has been made in view of the above-mentioned conventional circumstances, and has a new structure of a walking bar complete molding that simplifies the structure of the device and the structure of the main body of the special number walking bar, and also facilitates the installation and removal of the walking bar. The present invention aims to provide a single-pull-out device.

The walking bar complete slab pulling device according to the present invention rotates two groups of walking bars, an outer bar and an inner bar, which are arranged at the upper and lower ends of the cracked slab to be pulled out, by the rotation of eccentric shafts for the outer bar and the inner bar. In order to achieve this structure, the structure of the main body of the walking bar is simplified, and both of the upper and lower walking bars are suspended from the eccentric shaft. The basic feature is that the bar can be easily attached to and removed from the frame together with the eccentric shaft. At the same time, the outer bar and inner bar placed below the slab are attached to the outer bar and inner bar backstays located below. Assembling, on the other hand, for an outer bar in which the axis of the supported parts at both ends and the axis of the intermediate part are offset from each other in a direction perpendicular to the moving direction of the slab above the upper backstay. A plurality of eccentric shafts for the inner bar are arranged, and supported portions at both ends of each eccentric shaft are supported on the frame of the main body of the walking bar so as to be rotatable and movable along the moving direction of the slab. The upper back stays for the outer bar and the inner bar are rotatably attached to the center of each eccentric shaft for the inner bar, and the lower back stays for the outer bar and the inner bar are attached via each tie rod. By hanging and swinging the eccentric shafts for the outer bar and the inner bar within a certain angle range, the outer bar and the bar are alternately clamped and released from the slab, and , A reciprocating motion transmission mechanism is installed in the above frame to reciprocate the eccentric shafts for the outer bar and the inner bar along the direction of slab movement, and each eccentric shaft moves in the direction of slab movement when each bar is holding the slab. On the other hand, each bar is characterized in that it returns to its original position when the slab is released.

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

FIGS. 1 and 2 show a plan view and a front view of the walking bar and the entire 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 extraction device consists of a walking bar, a main body 4
, a drive device 1 for driving the walking bar main body 4, a clamp cam mechanism 2 for transmitting the power of the drive device 1 to the walking bar main body 4 to move each walking bar up and down, and a drive A propulsion cam mechanism 3 transmits the power of the device 1 to the walking bar main body 4 via the clamp mechanism 2, drives each walking bar in the direction of movement of the slab B, and transports the slab B forward. Become.

First, the main body of the walking bar will be explained.

Figure 3 is a sectional view taken along the line ■-■ in Figure 2, and Figure 4 is a cross-sectional view taken along the line ■ in Figure 3.
In the sectional views taken along the -■ line and the tv-tv line, the left half of the center line ■-■ shows the IV-IV line cross section, and the right half thereof shows the line ■-■. As clearly shown in FIG.
Walking bar 6゜6...;7,7...
····have. The walking parlor is composed of two groups of bars, as shown by two numerals 6 and 7 in the figure. The walking pars 6.7 in each group are arranged alternately, and the walking pars indicated by 6 are called outer bars, and the walking pars indicated by 7 are called inner bars. - In the lower case, the group of outer bars 6 and the group of inner bars 7 each operate in unison. Walking par for each group: 6.7
What is the moving direction of slab B toward and away from slab Is in the -1 direction? It is designed to perform a reciprocating motion of f,>i. Then, a group of outer bars 6 on one side of -1 and a group of outer bars 6 on the lower side form a set, and a group of inner bars 7 on one side of -1 and a group of inner bars 7 on the lower side form a set, and each group The slab 11 is held between the two and transported. Incidentally, each walking parser 6.7 is provided with a cooling plate 8 facing the slab 1 to come into contact with the slab B through the cooling plate 8.

FIG. 5 is a sectional view taken along the line -V in FIG. 4. As best shown in FIGS. 5 and 4, the upper group of outer bars 6 is connected by backstays 9 and 10, and the lower group of inner bars 7 is controlled by backstays 11 and 12. The group of outer bars 6 are assembled together by backstays 13 and 14, and the group of inner bars 7 further below are assembled together by backstays 15 and 16, respectively.

As clearly shown in Figure 3.4.5, guide rollers 21 are supported at the top of both ends of the frame 84 so as to be movable along the moving direction of the slab 13, and between each guide roller 21 there is an eccentric shaft. 17 to 20 are rotatably supported. Each of the backstays 9 to 12 is rotatably suspended on these eccentric shafts 17 to 20. The central axis 0 of the central portion of the eccentric shafts 17 to 20 is eccentric with respect to the axis (reference center) of each guide roller 21 or the axis 0 of the supported portions at both ends supported by each guide roller 21 . 4 Therefore, each eccentric shaft 17-20
When rotates around axis 0', each backstay 9~
In other words, the bar 12 can move toward and away from the slab B together with the outer bar 6 and the inner bar 7.

In addition, the upper ends of one pair of tie rods 22 to 25 are rotatably suspended on each of the eccentric shafts 17 to 20, and each lower end is connected to a trunnion that projects from both ends of each of the lower backstays 13 to 16. It is rotatably connected to 80. That is, the lower backstays 13 to 16 are suspended by the respective tie rods 22 to 25 together with the lower walking par.

As shown in FIG. 6, the eccentric shaft 18 for driving the outer bar 6 is connected to the trunnion 80 protruding from the backstay 13 for restraining the lower outer bar 6 on both sides with a lever 26. The inner bar 7
The eccentric shaft 20 for driving is connected on both sides by levers 27 to the trunnion 80 protruding from the backstay 15 to restrain the lower inner bar 7, and is connected to the upper and lower outer bars or the lower inner bar 7. The bars are linked together.

In the above configuration, each of the eccentric shafts 17 to 20 is rotated forward or backward at a constant angle θ, and this rotation causes the outer bar 6 and the inner bar 7 to alternately clamp and release the slab B. do.

On the other hand, the walking bar main body 4 is equipped with 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 sandwich the slab B. . That is, as clearly shown in FIG. 3-4, a pair of input shafts 29 are provided on one side of the frame 84, and each input shaft The input shaft 29 is provided on the outer periphery of the shaft 29.
A three-pronged lever 30 is provided which rotates integrally with the.

One lever 30a of the two-pronged lever 30 is connected via a lever 30C to the lower end of each lever 36, which is swingably mounted on one side of the frame 84 with a pin 37.

The upper end of each lever 36 is connected to the eccentric shaft 2 via a lever 85.
It is rotatably connected to 0 or 17. On the other hand, each of the other levers 30b of the two-pronged levers 30 is connected to the upper end of each lever 31, and the lower end of each lever 31 is connected to the frame 8.
Each transmission shaft 32 is connected via each lever 81 to one end of each transmission shaft 32 rotatably mounted between both ends of the transmission shaft 32.
The other end is connected to the lower end of each lever 33 via each lever 81, and the upper end of each lever 33 is connected to each three-pronged lever 3 rotatably provided on the outer periphery of each shaft 86 attached to a frame 84.
One lever 34C of each two-pronged lever 34 is rotatably connected to the lower end of one lever 35.
The upper end of 5 is connected to each lever 85 at the other end of the eccentric shaft 20 or 17.
are rotatably connected via the In this structure, when each input shaft 29 is oscillated and rotated within a certain angle range, a pair of levers 36 and 35 on both sides oscillate about each pin 37, and as the levers 36 and 35 swing, The eccentric shaft 20 or 17 moves along the direction in which the slab B moves.

When the eccentric shaft 20 moves, the inner par 7 moves together, and when the eccentric shaft 17 moves, the outer bar 6 moves together.

These movements are combined such that the outer bar 6 or the inner bar 7 moves in the advancing direction of the slab B when it is clamped, and returns to its origin when the slab B is released.

The reciprocating motion transmission mechanism can be easily removed from each eccentric shaft by, for example, removing the pin 38 that pivotally connects the levers 36 and 85.
．． 7 can be easily removed from the frame 84 together with the eccentric shafts 17-20, tie rods 22-25, levers 26, 27, and back plates 9-16.

Now, next, each eccentric shaft 1 of the walking bar main body 4
The drive system for driving the input shafts 7 to 20 and the pair of input shafts 29, that is, the drive device 1, the clamp cam mechanism 2, and the propulsion cam mechanism 3 will be described.

FIG. 7 shows the propulsion cam mechanism 3, and FIG. 8 shows the clamp cam mechanism 2.

The camshaft 40 of the propulsion cam mechanism 3, the camshaft 39 of the clamp cam mechanism 2, and the drive rotation shaft 87 of the drive device 1 are arranged in a straight line and connected by couplings 82 and 83, respectively.

First, the clamp cam mechanism 2 will be explained based on FIG.

-1- The cam shaft 39 is attached with an outer bar cam 41 that is involved in driving the outer bar 6, an inner bar cam 42 that is involved in driving the inner bar 7, and a balance cam 43.

On the other hand, four clamps 7' 47, 48, 55, 56 are provided horizontally and in parallel above the camshaft 39, and each of these clamp shafts 47, 48, 55, 56 corresponds to the camshaft 39. It is designed to rotate within a certain angle range by the simultaneous rotation of . When the camshaft 39 rotates, the rotation of the outer bar cam 41 and the inner bar cam 42 attached thereto is controlled by the outer bar cam 41 and the inner bar cam 42 attached thereto via the levers 45 and rods 46 that rotatably fix the lower part of each cam floor 44. are transmitted to the clamp shaft 47 and the inner bar clamp shaft 48, respectively,
The clamp shaft 47 for the outer bar and the clamp shaft 4 for the inner bar
8 each rotate by a certain angle. ” 2 Each clamp shaft 4
7.48, each hydraulic cylinder 50 is attached via a lever 49 to one end of each. Each hydraulic cylinder 50 continues to press each cam follower 44 against each cam 41, 42 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 this clamp shaft 56 is connected to the clamp shaft 48.
Perform the same rotation.

Each of the clamp shafts 47.48, 55.56 is connected to each eccentric shaft 17.20.1 via a universal spindle 57, respectively.
8.19. That is, each eccentric shaft 17.20.
18, 19 are driven in the vertical direction by the rotational force of the camshaft 39 and the pressing force of the hydraulic cylinder 50 together with the respective clamp shafts 47, 48, 55, 56.

The balance cam 43 is used to minimize the fluctuating drive torque by offsetting the main clamp drive torque and the propulsion cam torque described below. The torque of the camshaft 39 is controlled.

Next, the propulsion cam mechanism 3 will be explained based on FIG.

The camshaft No. 40 fixes a cam 61 for the outer bar and a cam 62 for the inner bar. Further, below the camshaft 40, an outer bar propulsion shaft 66 and an inner bar propulsion shaft 67 are provided parallel to the camshaft 40.
has been established. These propulsion shafts 66, 67 are connected to each input shaft 29 of the walking bar main body 4 through a coupling 58.
connected via.

The outer bar cam 61 and the inner bar cam 62 are connected to an outer bar propulsion shaft 66 and an inner bar propulsion shaft 67 via levers 64 and rods 65, which are rotatably fixed to the lower part of each cam follower 63, respectively. , and each propulsion shaft 66, 67 rotates within a certain angular range.

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, pressing each cam follower 63 against each cam 61, 62. With this configuration, each of the propulsion shafts 66, 67 reciprocates within a certain angle range every time the camshaft 40 rotates once, and this causes the walking bar main body and the inner bar 7 to move the slab B. Move along the direction.

△ In addition, if the rotational speed of the camshaft 40 is set to be faster than or equal to the slab feeding speed of the roll-type slab pulling device installed at the front position of this walking bar complete slab pulling device, the billet By applying a drawing force and slowing down the rotational speed of the camshaft 40, it is possible to cast a roll-type billet drawing device and an oak bar as a set. This compression force is determined by the pressure of the hydraulic cylinder 68.

As is clear from the specific description of the above embodiments, according to the present invention, the walking bar is moved in the vertical direction and in the direction of slab movement by rotating and moving the eccentric shaft to clamp and transfer the slab. Therefore, the structure of the walking bar body becomes very simple. In particular, Japanese Patent Application No. 47-126931 (Japanese Unexamined Patent Publication No. 49-8362) filed by the present applicant
When compared with the device shown in No. 2), it is clear that the structure of the main body of the walking bar is simplified because the present invention does not have a propulsion cam below the walking bar.

Further, since there is no rotating body such as a propulsion cam under the walking bar, there is no need for a device to protect the walking bar from sludge that separates from the slab.

Further, according to the present invention, by removing each eccentric shaft from the frame, the walking bar can be taken out together with the eccentric shaft via the backstay or tie rod, and there is an advantage that the work of attaching and detaching the walking bar to the frame is efficient. have

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIGS. 1 and 2 are an overall plan view and an overall front view of a walking bar complete slab drawing device, and FIG. 3 is a sectional view taken along the line III-■ in FIG. 2. Figure 4 is a cross-sectional view taken along lines Φ■-■ and V-■ in Figure 3, the left half of the center line V-V is a cross-sectional view taken along ■-■, the right half is a cross-sectional view taken along ■-■, Figure 5 is a sectional view taken along the line V-V in Figure 4, and Figure 6
The drawings are a cross-sectional view taken along line 4--2, FIG. 7 a diagram showing the propulsion cam mechanism, and FIG. 8 a diagram showing the clamp cam mechanism. 1... Drive device, 2... Clamp cam mechanism, 3...
・Propulsion cam mechanism, 4...Walking bar body part, 6
゜7...Walking bar, 8...Cooling plate, 9-1
6... Backstay, 17-20... Eccentric shaft, 21
...Guide roller, 22-25...Tie rod, 2
6, 27... lever, 28... lever, 29...
・Input shaft, 30...Two-pronged lever, 30a, 30b
, 30C-L/bar, 31...Lever, 32...Transmission shaft, 33...L/bar, 34...Two-pronged lever, 34a, 34b...Lever, 35...Lever, 37...Pin, 39.40...Camshaft, 41°4
2... Uncle cam, 43... Balance cam, 44...
Cam follower, 45...Lever, 46...Lever, 47...Clamp shaft for outer barme, 48...Clamp shaft for inner bar group, 49...Lever, 50...Hydraulic cylinder, 51 ...Lever, 53-...Rod, 55.
56... Clamp shaft, 57... Universal spindle, 58... Coupling, 59... Surface pressure ram cylinder, 60... Cam follower, 61... Outer bar mounting cam, 62... Inner bar vertical cam, 80...Trunion, 81...Lever, 82.83...Coupling, 84...Frame, 85...Lever, 86...
...Axis, 87...Drive shaft, 0...Eccentric shaft center, 0
... Axis center of guide roller, B... Slab. Patent applicant: Agent of Kobe Steel, Ltd.
Patent attorney Aoyama Aoki and 2 others 296 1 Procedure amendment December 1980 238 1 Indication of the case 1982 Patent Application No. 152408 2 Name of the invention Walking bar complete slab extraction device 3 Person making the amendment Case and Related Patent applicant name (119) Kobe Steel, Ltd. 4 Agent address Honmachi Building, 2-10 Honmachi, Higashi-ku, Osaka-shi, Osaka Name Patent attorney (621,4) Aoyama Aoki and 2 others 7. Contents of amendment ( I) Correct the following part in the specification. (1) Detailed explanation of the invention column, page 8, lines 14 to 17, "The central axis 0 is eccentric." [The central axis O and the tie rod 22~ The axial center 0 of the 25 parts is eccentric to both parts 1 with respect to the center 0 of each guide roller 210 (reference center). ” he corrected himself. (2) Delete "28...lever" on page 18, line 12 of the brief description of the drawing column. (II) Figures 2, 3, 4, and 8 in the drawings will be corrected as shown in the attached sheet. ``2''

Claims (2)

[Claims] (1) While assembling the outer bar and inner bar placed above the slab to be pulled out to the respective backstays for the outer bar and the inner bar located above them, the outer bar and inner bar placed below the slab are assembled. The bar is assembled to each of the backstays for the outer bar and the inner bar located below, and the shafts of the supported parts at both ends are mounted above the upper backstay in a direction perpendicular to the moving direction of the slab. A plurality of eccentric shafts are arranged for the outer bar and the inner bar, in which the center and the center axis of the intermediate part thereof are offset from each other. The slab is supported movably along the moving direction, and the upper backstay for the outer bar and the inner bar are rotatably attached to the center of each eccentric shaft for the outer bar and the inner bar. The outer bar and inner bar are cast by suspending the backstays for the outer bar and the inner bar through each tie rod and swinging and rotating the eccentric shafts for the outer bar and the inner bar within a certain angle range. In addition, a reciprocating motion transmission mechanism is provided in the frame to reciprocate the eccentric shafts for the outer bar and the inner bar along the moving direction of the slab, and each eccentric shaft 1. A walking bar set of a slab pulling device, characterized in that when each bar is holding a slab, it moves in the direction of slab movement, and when each bar is releasing a slab, it returns to its original position. (2) Each of the eccentric shafts is detachably provided to the reciprocating motion transmission mechanism and the drive source for rotating each eccentric shaft, and is attached to the frame together with the outer bar and inner bar, backstay, tie rod, and eccentric shaft. 2. The device according to claim 1, wherein the device is adapted to be removed from the device.