JPH044966A - Forming core with detaching mechanism in lining constructing apparatus for molten metal ladle - Google Patents

Abstract

PURPOSE:To sufficiently fill up monolithic refractory to bottom part with a core by providing a bottom opening/closing device, centering device, floating-up preventing lock device, bottom part holding device, automatic revolving rod-like vibrating device, etc., to bottom part in the core. CONSTITUTION:By using the centering rod part 14, space distance between the core body 1 and peripheral wall in the ladle vessel A can be adjusted, and after setting this at the optional position, by using a core level adjusting device 32, the level adjustment of core body 1 is executed, and by using the floating-up preventing lock device 34, the core body 1 is firmly set in the ladle vessel A. Successively, the centering rod 14 is returned back in the core body 1 and after charging the monolithic refractory into the space part F between the ladle vessel A and the core body 1 through a charging chute, three pieces of vibrating bodies 44 in each bar-like vibrator 41 for the automatic revolving bar-like vibrating device 37 are simultaneously or individually descended and dipped into the monolithic refractory already charged and a swinging arm 40 is swung while vibrating the vibrating body 44.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention is applied to a core for constructing an inner circumferential wall of a molten metal ladle by filling it with an unshaped refractory material when constructing a molten metal ladle such as a hot metal ladle or a molten steel ladle. This invention relates to a molding core with a detachment mechanism that allows for easy detachment when the core is pulled out after molding, and also allows the bottom of the molten metal pot to be filled and molded with an amorphous refractory material.

<Conventional technology> Conventionally, when building casting pots, hot metal pots, etc., when pulling out the core that is to become the inner peripheral wall of the construction equipment after molding, the core sticks to the outer periphery of the construction. It is extremely difficult to leave
This method requires a lot of effort and has the disadvantage that the core is easily damaged. Therefore, the applicant of the present application filed Japanese Patent Publication No. 51-944 (Molding Core with Detachment Mechanism for Lining Construction Apparatus for Cylindrical Bodies, etc.) as a core that eliminates the above-mentioned drawbacks. This invention provides a molding core with a detachment mechanism, which is formed by vertically cutting one part of the core, making both free ends abutted, and interposing an advancing and retracting device that generates an attractive force between the two free ends. It is.

As shown in Fig. 13, this molding core with a detachment mechanism is made by laying several layers of refractory bricks C in advance on the bottom of the outer peripheral wall of a steel pot a, and placing the above-mentioned detachment mechanism on the refractory bricks C. The molding core C is placed, and the space d between the inner circumferential wall of $a and the outer peripheral wall of the molding core C with a release mechanism is filled with an amorphous refractory material.

<Problems to be Solved by the Invention> However, in order to construct the refractory bricks C on the bottom of the pot a, it requires advanced construction technology, as well as time and labor. Attempts have been made to fill it with material. In this case, the bottom of the pot a is filled with an amorphous refractory material in advance, and the core is placed after it is sufficiently cured. However, in this case, there is a problem that the curing period takes more days than necessary. Therefore, attempts have been made to fill the unshaped refractory material to the bottom using a core, but the particles of the unshaped refractory material are large and it is impossible to fill the core tightly enough to the bottom.

In the present invention, in order to solve the above problems, at the inner bottom of the core,
We provide a molding core with a release mechanism that is equipped with a bottom plate opening/closing device, a centering device, a lifting prevention locking device, a bottom holding device, an automatic rotating machine-like vibrating device, etc. for checking the filling status of the monolithic refractory material and holding down the vibration device. The purpose is to

Means to solve problems〉 The above object of the present invention can be achieved by the following configuration.

In other words, the gist is that at least one part of the outer circumferential wall of a cylindrical core body having a bottom made of a heat-resistant and visible material is cut vertically, both free ends are abutted, and the free ends are brought into contact with each other. A reciprocating device that generates a force is interposed, and a plurality of centering devices are provided around the inside of the core body to adjust the spatial distance between the core body and the pot container, and further, on the outer peripheral edge of the lower end of the core body, A bottom part that can be freely connected by appropriate means is provided, and a plurality of bottom opening/closing devices for freely closing the indefinite refractory input port are provided in the center of the bottom part, and a plurality of bottom holding devices for separating the bottom part upwards, while the above-mentioned In order to erect the core body into the pot container, a core support portion that engages with the opening end of the steel container is provided to protrude horizontally from the opening edge of the core body, and a core level is provided on the core support portion. An adjustment device is provided, and further, at the tip of the core support located on the trunnion of the pot container,
There is a molding core with a detachment mechanism in a lining construction device for a molten metal ladle, which is characterized by being provided with an anti-float locking device that is freely moored to the trunnion, and further includes a pot container and a core body on the core body. The invention is characterized in that an automatic rotating rod-shaped vibrating device is installed, which comprises at least one rotating arm that rotates over the space between the outer circumferential walls, and a rod-shaped vibrator that can be raised and lowered from the rotating arm. This is a molding core with a release mechanism for a lining construction device for a molten metal pot.

<Example> The molding core with a release mechanism according to the present invention will be described in detail below with reference to drawings showing examples thereof.

FIG. 1 is a front sectional explanatory view showing an outline of a molding core with a release mechanism of the present invention, and FIG. 2 is a plan explanatory view thereof.

In the figure (11 is a core body having a bottom part (21) connected and integrated, the outer peripheral wall of the core body (1) is made of a heat-resistant flexible material and as shown in Figure 3. , the outer circumferential wall (3) of the core body (1) is vertically cut at the - point, and both free ends (A) and (4) are butt-shaped, and the two free ends (A) and (4) are butted.
2), (4) an advancing/retracting device (5) that generates an attractive force between
), and the intervening piece (6) disposed between the free end portions (4) and 141;
It is composed of a movable device (to) consisting of a hydraulic cylinder that moves the intervening piece (6).

That is, one end of the intervening piece (6) is rotatably supported by a pivot portion (9) on a reinforcing frame 8 provided concentrically around the inner circumference of the core body fil, and the intervening piece (6) ) is pivotally supported at the tip of the L-shaped lever f10+. The pivot point (11) of this L-shaped lever (101) is pivoted on the reinforcing frame 6 opposite to the pivot (9), and the other end of the L-shaped lever GO+ is ). Therefore, the intervening piece (6) is connected to the pivot part (9
) is used as a fulcrum and the movable device (2) consisting of a hydraulic cylinder expands and contracts to allow the free end portions (41, 441 to be inserted into or removed from the space at will).

Next, in FIG. 1, (12) is a hook connecting portion during extraction work using a crane or the like, and (13) is a centering device. This centering device (13) has a centering tightening part (14) that protrudes loosely through a centering hole (15) that penetrates the outer peripheral wall (3) of the core body (1). Centering tightening part (
14) is connected to a hydraulic cylinder (17) via a lever (16), and the extension length of the core body (1) is adjusted by expanding and contracting the hydraulic cylinder (17). As shown in FIG. 2, four centering devices F (13) are installed in the core body (1) at 90 degrees each.

In addition, a bottom holding device (1) is attached to the bottom (21) of the core body (1).
8) are installed in three pieces at 120 degrees each, and a bottom holding hole (19) is provided through the bottom part (a), and a bottom holding part (20) is inserted downward into the bottom holding hole (19). The bottom holding part (20) is provided so as to freely protrude into the bottom part (20), and the bottom holding part (20) is connected to a gate-shaped support part (20) installed on the bottom part +21 as shown in FIG.
21), and can be freely protruded downward by the expansion and contraction of a hydraulic cylinder (17) installed on the same portal support part (21).

The bottom clamping part (20) protrudes downward, and when loading the monolithic refractory material, the tip of the bottom clamping part (20) seals the bottom clamping hole (19) as shown in the figure. It is a mechanism that closes in a shape.

Next, as shown in Fig. 4, the bottom part (2) of the core body (1) is provided with a bottom opening/closing device (22) in the center that can be opened and closed by a hydraulic cylinder (17). The bottom opening/closing device (22) is connected to the bottom (22) as shown in FIG.
2. An amorphous refractory material inlet (23) provided through the center of the opening/closing mechanism (24) can be closed or opened in a hermetically sealed manner. In addition, a plurality of windows (25), (25>...) are penetrated around the periphery of the bottom U, and the windows (25), (25>...
25), (25>..., a lid part (
26).

(26)... are installed respectively.

The lids (26), (26>...) have a mechanism that allows them to be opened or closed manually using a tool, etc. Furthermore, the bottom (2) and the outer peripheral wall of the core body (1) As shown in Figures 7 and 8, as a connection mechanism, the flange parts (27>, (27') are attached to the bottom (2) upper end periphery and the lower end periphery of the outer peripheral wall of the core body (1) inward. The flange portion (27'') on the core body (1) side is provided with elongated holes (28), (28), etc. at regular intervals, as shown in Fig. 8. As shown, connecting fastening members (2) such as bolts and nuts are inserted from the flange (27) on the bottom (2) side.
9) is a mechanism for connecting the bottom part (2) and the outer circumferential wall of the core body (1).

Note that (30) indicates a packing member for maintaining airtightness between the flange portions (27>, (27''). Also, the seal member is used to connect the bottom portion (2) and the outer circumferential wall of the core body (1). In addition to the mechanism detailed above, various mechanisms can be considered as the mechanism, and it is desirable to adopt the most suitable mechanism depending on the situation.

Next, the core body (1) is supported on the outer peripheral edge B of the pot container A by a core body support part (31) that protrudes in all directions from the upper end of the core body (1). A core level adjustment device (32) is installed in each of the core support parts (31>, (31)...).This core level adjustment device (32) is shown in Fig. 9. As shown, a level adjustment plate part (33) is connected to the tip of a hydraulic cylinder (17) built into the core support part (31), and the level adjustment plate part (33) is connected to the outer periphery of the pot container A. The above-mentioned hydraulic cylinder (17) is placed on a reinforcing band C provided around the wall.
While the upper end surface of reinforcing band C is pressed by the expansion and contraction of
) is a mechanism that can freely adjust the level of itself. Furthermore, a floating prevention locking device (34) is provided at the tip of the core support portion (31) located in the direction of the trunnion D protruding from the outer peripheral wall of the pot container A. This lifting prevention lock (34) is placed directly on the 10th
As shown in the figure, the locking part (36) is rotated 90'' by the hydraulic cylinder (17) about the pivot part <35), and the locking part E formed at the tip of the trunnion D of the pot container A is rotated by the hydraulic cylinder (17). This is a mechanism that firmly prevents the core body (1) from floating.

Next, FIGS. 11 and 12 are an explanatory plan view and an explanatory view of the internal mechanism when the automatic rotating rod-shaped vibration device (37) is installed in the core body (1).

As shown in the figure, a pivot post (39) is rotatably supported on a central cylinder (38) to which a hook connecting portion (12) is attached at the tip, and the pivot post (39) has three Swivel arms (40), (40), (40) are arranged, and below them are three beams (41) that support the central column (38).
is constructed around the core body (11) and fixed.

Three swivel arms (4) attached to the swivel post (39)
0) supports a holding guide (42) for holding each of the three rod-shaped vibrators (41), and this rod-shaped vibrator (41) is a driving source mode (41) that is the source of vibration.
43), a vibrating body (44) that generates vibrations, and a flexible power transmission shaft (45). Vibrating body (4
4) is suspended from a rotating arm (40) and is raised and lowered by an elevator (46).

The structure of this elevator (46) is, for example, a holding guide (42).
A pinch roller (not shown) is provided approximately in the center of the holding guide (42), and several rollers (47) are provided in the middle of the holding guide (42) to reduce resistance when the rod-shaped vibrator (41) is raised and lowered. ing. One end of the holding guide (42) is connected to the pivot arm (40).
) is supported by a bottle (48) at the tip thereof, and the other points are held by a slide plate (49) so that the holding guide (42) can be slightly slid. The pinch roller (not shown) is driven by the drive motor (50), and therefore, the drive causes the vibration body (44) and the drive source motor (43)
is something that goes up and down. In addition, a guide rod (51) for guiding the drive source motor (43) to eliminate vibration of the drive source motor (43) itself and to move up and down smoothly is attached to the central cylinder (3).
8), and the guide rod (52) is fixed at the upper and lower ends.

A swinging post (39) rotatably supported on the upper part of a central cylinder (38) is turned by a swinging device (52), which is connected to a swinging motor (53), a gear (5)
4a), (54b), (54c), a pivot shaft (55), etc., and is fixed to the beam (41). Between the beam (41) and the central cylinder (38) are bearings (56a),
< 56b ) is interposed between the rotation gear (54b) which pivotally supports the rotation shaft (55), and the gear (54c) (54d
), power is transmitted through the pivot post (39) to pivot the pivot post (39). Its pivoting post (39) is the central cylinder (38)
is supported via bearings.

In this embodiment, three swing arms (40) are installed, so vibrations are given while swinging by 120 degrees, but the number of swing arms (40) may be one, two, or more. It is conceivable to permanently mount them, and in that case, the turning angle will be determined according to the number of them.

<Function> The molding core with a detachment mechanism of the present invention has the above-mentioned structure, and its function will be explained in detail below.First, as shown in FIG. In order to erect the core body (1), the centering tightening part (1
4) After adjusting the protrusion length, press it into the pot container A.

That is, the spatial distance between the core body (1) and the inner circumferential wall of the pot container A can be adjusted by the centering tightening part (14), and after the core body (1) is installed at an arbitrary position, the core level adjustment device (32) The level of the core body (1) is adjusted, and the core body (1) is placed inside the pot container A by the lifting prevention locking device (34).
6th centering tightening part (14) to firmly install the core body (
1) After putting the unshaped refractory material into the space F between the pot container A and the core body (1) using a charging chute (not shown), the automatic rotating rod vibrator (37 ) The vibrating body (44) of each rod-shaped vibrator (41) of 3 weights or individually is lowered and submerged in the monolithic refractory material that has already been put in, and the vibrating body (44) is vibrated while the rotating arm is moved. (4
0).

On the other hand, in the space E' between the bottom part (2) of the core body (1) and the bottom part of the pot container A, the opening/closing lid part (24) of the bottom opening/closing device (22) of the bottom part (2) is opened. , the monolithic refractory material is charged into the bottom space E' from the monolithic refractory material input port (23) using a separate charging chute (not shown), and
5), the lid (26) is opened, and while observing the filling state, the bottom space F'' is filled with the amorphous refractory material while being vibrated by a separate vibrator (not shown). After the filling of the hollow parts F and F' is completed, the opening/closing lid part (24) and the lid part (26) are sealed, and after the monolithic refractory material is sufficiently cured, the floating prevention locking device is installed. (30) by the lock part (32), and then connect the bottom part (21 and the outer circumferential wall of the core body (1)) to the flange part (27).
, (27') for connection fastening member (29').
) to release the fastening, and move the intervening piece (6) of the advancement/retraction device (9) to the free end (a) by the movable device (7).
, (a) to reduce the diameter of the core body (1), and then remove the bottom part (2) from the bottom part (2) of each bottom part part holding device (18).
20) is made to protrude downward, the core body (1) is separated upward and lifted by a crane, and the operation is completed.

<Effects of the Invention> As described above, according to the present invention, the sticking of the core to the molded product can be easily and effortlessly released, and the molded product can be reliably and easily attached to the bottom of the pot container. , the work efficiency is much improved compared to the conventional method. Also, compared to conventional methods, it is no longer necessary to lay fireproof bricks at the bottom of the pot container.
This has various effects, such as significantly reducing unnecessary labor and manufacturing days.

[Brief explanation of the drawing]

Fig. 1 is a front cross-sectional explanatory view showing an outline of a molding core with a release mechanism of the present invention, Fig. 2 is an explanatory plan view thereof, Fig. 5 is an explanatory view of the release mechanism of the present invention, and Fig. 4 is an explanatory view of the molding core with a release mechanism of the present invention. An explanatory diagram showing the bottom of the core body of the invention, FIG. 5 is an enlarged explanatory diagram of the bottom holding device of the invention, FIG. 6 is an explanatory diagram showing the bottom opening/closing device of the invention, and FIGS. 7 and 8 are An explanatory diagram showing an embodiment of the connection mechanism between the bottom and the core body of the present invention, FIG. 9 is an enlarged explanatory diagram of the core level adjustment device of the present invention, and FIG. 10 is an explanatory diagram of the lifting prevention lock of the present invention. Explanatory diagram showing the device, Figures 11 and 12
The figures are an explanatory plan view and an explanatory view of an internal mechanism when an automatic rotating rod-shaped vibrating device is provided in the core body, respectively, and FIG. 13 is an explanatory view showing a conventional example. In the figure A: Pot container (1): Core body (z: Bottom (4), G41: Free end (13) Advancement/retraction device Intervening piece centering device Bottom holding device Bottom opening/closing device Core level adjustment device Anti-floating Locking device automatic turning rod vibrating device No. 4

Claims (1)

[Claims] 1. At least one part of the outer circumferential wall of a cylindrical core body made of a heat-resistant flexible material is vertically cut, both free ends are butted, and the free ends are In addition, a plurality of centering devices for adjusting the spatial distance between the core body and the pot container are provided around the core body, and a plurality of centering devices are provided around the core body to generate an attractive force, and further, a plurality of centering devices are provided around the core body, and In addition, a bottom part is provided that can be freely connected by appropriate means, and a plurality of bottom opening/closing devices for freely closing the indefinite refractory input port are provided in the center of the bottom part, and a plurality of bottom holding devices are provided for detaching the bottom part upward. On the other hand, in order to erect the core body into the pot container, a core support portion that engages with the opening end of the pot container is provided to protrude horizontally from the opening edge of the core body, and a core support portion that is engaged with the open end of the pot container is provided to protrude horizontally from the opening edge of the core body. A lining construction device for a molten metal pot, characterized in that a child level adjustment device is provided, and a floating prevention locking device is provided at the tip of a core support located on the trunnion of the pot container to freely moor the trunnion. Molding core with release mechanism. 2. The core body is comprised of at least one swing arm that swings over the space between the pot container and the outer peripheral wall of the core body, and a rod-shaped vibrator that is movable up and down from the swing arm. 2. The molding core with a detachment mechanism in a lining construction apparatus for a molten metal ladle according to claim 1, further comprising an automatically rotating rod-shaped vibrating device.