JP7421872B2 - Vibrating tool for stamp construction - Google Patents

Description

The present invention relates to a vibrating tool for stamping (pressing) the bottom of a concave portion of an induction furnace or the like.

As a type of electric furnace, an induction furnace is known that utilizes heat generated by eddy current caused by electromagnetic induction. When forming such an induction furnace, as in Patent Document 1, a back lining material such as a ramming material is put into a cylindrical recess or a metal container so that the bottom of the furnace has an appropriate thickness. After applying the stamp, cover the surface layer of the back lining material with a partition board or cloth, add top lining material such as ramming material, and apply the stamp again so that the bottom of the hearth has an appropriate thickness. There is a need. Although there is no particular description of the method of stamping the bottom of the furnace in this method, if the stamping of the bottom of the furnace is uneven, there is a risk that local wear and tear will occur during use, leading to leakage of molten metal. Therefore, uniform filling of the bottom of the furnace is essential.

In order to make such stamping easier, there is a method of stamping using a reciprocating rammer while rotating the metal container as in Patent Document 2, and a method of attaching a vibrator as in Patent Document 3. A method has been proposed in which stamping is performed by suspending a plurality of pressure plates using a balance rod and moving them one after another.

Japanese Unexamined Patent Publication No. 58-129188 Japanese Unexamined Patent Publication No. 51-26634 Japanese Patent Application Publication No. 7-294153

However, the stamp construction method using a reciprocating rammer as disclosed in Patent Document 2 requires rotating the furnace body such as a metal container, so it is equipped with electrical wiring and water cooling piping and is tiltable for tapping. While it cannot be used when constructing the bottom of a large induction furnace that is fixed to a pedestal, the stamp construction method, in which a pressure plate equipped with a vibrator is suspended and moved by a balance rod, such as the one disclosed in Patent Document 3, can be used to construct the bottom of a large induction furnace. Therefore, the two vibrators and the pressure plate had to be at the same distance from the center of the furnace, and since they moved due to vibration, there was a possibility that they would come into contact with the wall and break it.

An object of the present invention is to efficiently stamp the bottom of a cylindrical concave part of an induction furnace, etc., in a short time and with less effort, in order to solve the problems of the conventional method of stamping the bottom of a furnace. To provide a vibrating tool for stamp construction which can easily and uniformly perform stamp construction without hanging.

The invention described in claim 1 of the present invention is a vibrating tool for stamping the bottom (such as the bottom of a hearth) of a concave part (a concave part such as a columnar shape or an inverted truncated cone), which uses a vibration motor. has one or more vibrating pressing means formed by providing a flat plate-shaped body substantially horizontally at the lower end of the main shaft, and a guide frame that supports the vibrating pressing means so as to be movable in a horizontal plane. It is characterized in that it is rotatable while being gripped and suspended , and that the guide frame is provided with wheels on the outside for guiding the inside of the furnace .

The invention set forth in claim 2 is the invention set forth in claim 1 , in which the guide frame is provided with support means formed by fixing two or more shafts so as to connect them to each other in a horizontal plane. and the one or more vibrating pressing means are held in a hanging manner on each shaft of the supporting means.

The invention set forth in claim 3 provides that, in the invention set forth in claim 2 , an engaging member for engaging the hanging hook (hook-shaped member) is fixed to the supporting means. This is a characteristic feature.

The invention set forth in claim 4 is the invention set forth in any one of claims 1 to 3 , in which the wheels are attached to the outside of the guide frame via a support, and the support includes: This vehicle is characterized by being equipped with a biasing mechanism for biasing the wheels outward.

The vibration tool for stamp construction according to claim 1 is provided with one or more vibration pressing means movable in a horizontal plane, and is rotatable while gripping and hanging the guide frame. Stamping can be carried out efficiently and uniformly according to the condition of the bottom of the concave portion (such as the hearth bottom) (the distribution of unfilled portions, etc.).

The vibration tool for stamp construction according to the first aspect can be accurately guided (set) to a desired position inside the cylindrical concave portion by means of wheels attached to the outside of the guide frame. Additionally, since the wheels move along the furnace wall, construction can be carried out while rotating smoothly. In addition, according to the vibration tool for stamp construction according to claim 1 , since the wheels absorb the impact toward the furnace wall caused by the vibration pressing means during construction, destruction of the furnace wall can be effectively prevented. .

The vibration tool for stamp construction according to claim 2 can perform stamp construction very efficiently because the position of the plurality of vibration pressing means can be adjusted in detail according to the condition of the bottom of the recessed portion (such as the hearth bottom). can be carried out.

The vibration tool for stamp construction according to claim 3 is provided with an engaging member for engaging with a hook (hook-shaped member) in a suspended state, so that it can be easily stamped using a hoist crane or the like. You can pick it up, adjust its position, or move it to another location.

In the vibration tool for stamp construction according to claim 4 , since the support for attaching the wheel to the outside of the guide frame is provided with a biasing mechanism for biasing the wheel outward, the inner diameter Even if the diameter is different (small diameter), the wheels can be smoothly guided into the furnace with the wheels pressed against the furnace wall.

FIG. 3 is a front view showing a vibrating tool for stamp construction. FIG. 2 is a plan view showing a vibrating tool for stamp construction. FIG. 2 is an explanatory diagram (cross-sectional view taken along the line AA in FIG. 1) showing the lower part of the vibration tool for stamp construction. It is an explanatory view (partial sectional view) showing an installation part of a wheel and a support body. It is an explanatory view showing the usage state of the vibrating tool for stamp construction.

EMBODIMENT OF THE INVENTION Hereinafter, one embodiment of the vibration tool for stamp construction according to the present invention will be described in detail based on the drawings.

<Structure of vibrating tool for stamp construction>
1 to 3 show an example of a vibration tool for stamp construction according to the present invention, and the vibration tool 1 for stamp construction is movable with respect to a metal guide frame 9 and the guide frame 9. It is composed of four vibrating pressing means 2, 2, etc. provided in the main body, and has a size of width (left and right width) x depth (front and back depth) x height = 800 mm x 800 mm x 600 mm. .

The guide frame 9 includes two vertical shafts 10a, 10b with a diameter of 35 mm, an upper cross-shaped support means 16 formed by orthogonally welding two upper horizontal shafts 14, 15 with a diameter of 35 mm, and two vertical shafts 10a, 10b with a diameter of 35 mm. It is assembled by welding a lower cross-shaped support means 13 formed by welding the lower horizontal shafts 11 and 12 orthogonally to each other. That is, in the guide frame 9, two vertical shafts 10a, 10b are arranged in parallel with a predetermined distance (approximately 600 mm) apart, and at approximately the upper and lower ends of the vertical shafts 10a, 10b, The upper cross-shaped support means 16 and the lower cross-shaped support means 13 are fixed (welded) to each other (that is, the upper cross-shaped support means 16 and the lower cross-shaped support means 13 are fixed (welded) to each other at approximately the upper and lower ends of the two vertical shafts 10a and 10b, respectively. The left and right edges of the upper horizontal shaft 14 of the support means 16 and the left and right edges of the lower horizontal shaft 11 of the lower cross-shaped support means 13 are fixed (welded). The upper cross-shaped support means 16 and the lower cross-shaped support means 13 are arranged in the same phase in a horizontal plane with a predetermined distance (approximately 600 mm) between them. Further, handles 7, 7 each having a diameter of 15 mm and a length of 600 mm are connected to the upper ends of the two vertical shafts 10a, 10b by screws.

Further, wheel supports 19a to 19d having a spring function are fixed (welded) to the outside of the two upper horizontal shafts 14 and 15, and each wheel support body 19a to 19d has a diameter of 40 mm. The guide wheels 20a to 20d of the swivel casters (metal wheel bodies whose outer peripheries are covered with rubber) are pivotally mounted, and can freely rotate vertically and horizontally at the tips of the upper horizontal shafts 14 and 15. There is.

FIG. 4 shows a part of the installation part of the wheel support 19b cut away, and at the tip of the upper horizontal shaft 14, a cylindrical locking pin 23 penetrates the upper and lower parts of the upper horizontal shaft 14. It is set up to do so. On the distal end side of the locking pin 23, there is provided a disc-shaped support 24 with a slightly smaller diameter than the inner diameter of the upper horizontal shaft 14, a coil spring 25, and a bottomed cylinder with a slightly smaller diameter than the inner diameter of the upper horizontal shaft 14. A shaped inner pipe 26 is built-in. Further, a donut-shaped dam 27 is welded to the outer edge of the upper horizontal shaft 14, and the inner pipe 26 is held in a state in which the coil spring 25 is slightly compressed by the dam 27. It is dammed so that it does not protrude outside the upper horizontal shaft 14. Further, a nut 29 having a threaded groove is welded to the cover member 28 on the distal end side of the inner pipe 26. On the other hand, the bifurcated support member 30 to which the guide wheel 20b is pivoted is provided with a protrusion 31 with a threaded groove on the proximal end side. It is screwed onto a nut 29.

Therefore, when a force is applied to the guide wheel 20b toward the base end of the upper horizontal shaft 14, the coil spring 25 is compressed, and the wheel support 19b is moved inward with the guide wheel 20b being urged by the coil spring 25. It is designed to slide towards. Conversely, by lowering the degree of screwing between the bifurcated support member 30 and the nut 29 of the inner pipe 26 (shortening the length of the screwed part), the guide wheel 20b can be moved forward (outward). ) can be moved. Note that the wheel supports 19a, 19c, and 19d also have the same structure as the wheel support 19b.

Furthermore, as shown in FIGS. 1 and 2, above the central portion of the upper horizontal shaft 14 of the upper cross-shaped support means 16, a substantially triangular flat plate is provided for lifting the vibration tool 1 for stamp construction with a hoist type crane or the like. An engagement member 17 is provided to protrude upward, and an engagement hole 18 with a diameter of 100 mm is bored at the top of the engagement member 17 for engagement with a hook of a hoist type crane, etc. It is set up.

On the other hand, the four vibration pressing means 2, 2, . . . are constituted by a vibration motor 3 and an actuating section 21. The actuating part 21 has a flat pressing body 5, which is a circular metal plate with a thickness of 10 mm and a diameter of 200 mm, fixed (welded) to the lower end of a metal connecting shaft 4 with a diameter of 30 mm and a length of 800 mm. The connecting shaft 4 stands upright from the center of the upper surface of the flat pressing body 5. In each of the vibrating pressing means 2, 2, . . ., the actuating portion 21 is connected to a main shaft 22 projecting downward from the lower end of the vibrating motor 3 so as to hang down.

Each of the above-mentioned vibrating pressing means 2, 2, . It is attached to the guide frame 9 by metal lower mounting members 8, 8 which are movably mounted on the respective lower horizontal shafts 11, 12 of the cross-shaped support means 13.

Each upper mounting member 6, 6 has a cylindrical body 6b with a diameter of 40 mm through which each upper horizontal shaft 14, 15 can be inserted, fixed (welded) on a substantially rectangular flat plate-shaped substrate 6a with a thickness of 10 mm. At the same time, the substrate 6a is fixed (welded) to the longitudinally intermediate portion (two places on the left and right) of the cylindrical body 6b by two substantially triangular vertical reinforcing plates 6c, 6c having a thickness of 10 mm. On the other hand, each of the lower mounting members 8, 8 has a cylindrical body 8a with a diameter of 40 mm through which each of the lower horizontal shafts 11, 12 can be inserted, and a cylindrical body with a diameter of 40 mm through which the connecting shaft 4 of the vibration pressing means 2 can be inserted. The body 8b is fixed (welded) so as to be orthogonal to each other.

Each of the vibration pressing means 2, 2... screws the upper surface of the vibration motor 3 to the substrate 6a of the upper mounting member 6, and connects the cylindrical body 6b of the upper mounting member 6 to the upper horizontal shaft 14 (or the upper horizontal shaft 15). ) and the connecting shaft 4 is inserted through the cylindrical body 8b of the lower mounting member 8, so that the connecting shaft 4 is attached to the guide frame 9 in a vertically downwardly hanging state. Each of the vibrating pressing means 2, 2, . . . is movable (that is, position adjustable) along the upper horizontal shaft 14 (or the upper horizontal shaft 15). In addition, when moving each vibration pressing means 2, 2, etc. along the upper horizontal shaft 14 (or the upper horizontal shaft 15), the lower horizontal shaft 11 (or the lower horizontal shaft 12) must be moved. The attachment member 8 is moved and adjusted so that the connection shaft 4 hangs vertically downward.

<How to use the vibrating tool for stamp construction>
FIG. 5 shows an example of how to use the vibration tool 1 for stamping constructed as described above. When an operator performs stamp construction on the bottom of an induction furnace using the vibration tool 1 for stamp construction, the hook F at the tip of the wire W of the hoist crane H is engaged with the engaging member 17 of the vibration tool 1 for stamp construction. It is engaged with the matching hole 18, and in this state, the vibration tool 1 for stamp construction is lifted up by the hoist crane H. Thereafter, the stamp construction vibration tool 1 thus lifted is positioned above the induction furnace I. Then, the stamping vibration tool 1 is guided into the induction furnace I by lowering the hoist crane H. At this time, the stamping vibration tool 1 is smoothly guided into the induction furnace I by the guide wheels 20a to 20d provided on the outside of the guide frame 9.

When the flat pressing bodies 5 of the vibration pressing means 2, 2, etc. of the vibration tool 1 for stamp construction reach the bottom of the furnace, external power is supplied to the vibration motor 3 via a lead wire (not shown). Stamp application is started (that is, the flat pressing body 5 is vibrated up and down by the vibration motor 3). After stamping is continued for a certain period of time, the stamping vibration tool 1 is hoisted to the outside of the induction furnace I using a hoist crane H. Furthermore, after confirming the situation at the bottom of the hearth, the guide frame 9 is rotated using the handles 7, 7, and the phase (rotation angle in the horizontal plane) of the lifted vibration tool 1 for stamp construction is changed, and each vibration By moving the pressing means 2, 2, . position). In addition, when changing the phase (rotation angle in the horizontal plane) of the lifted vibration tool 1 for stamp construction, the phase can be changed very easily by grasping and rotating the handles 7, 7 protruding from the furnace. Can be fine-tuned. After such adjustment, the hoist crane H is lowered again to guide the stamping vibration tool 1 into the induction furnace I and continue stamping. In this way, by finely adjusting the stamping position by the flat pressing body 5 of each vibration pressing means 2, 2, etc., stamping can be completed within a short time. In addition, by rotating the stamping vibration tool 1 with the flat pressing bodies 5, 5, . . . at different positions from the center, the entire hearth bottom can be evenly stamped.

<Effects of vibrating tools for stamp construction>
As described above, the vibration tool 1 for stamp construction includes a plurality of vibration pressing means 2, 2, etc., each comprising a flat pressing body 5, which is a flat plate-shaped body, provided substantially horizontally at the lower end of the main shaft 22 of the vibration motor 3. It has a guide frame 9 that movably supports the vibration pressing means 2, 2, etc. in a horizontal plane, and is rotatable while holding and suspending the guide frame 9. Stamping can be performed efficiently and uniformly according to the condition of the bottom of the concave portion (such as the bottom of an induction furnace) (the distribution of unfilled portions, etc.).

In addition, since the vibration tool 1 for stamping is equipped with guide wheels 20a to 20d on the outside of the guide frame 9 for guiding the inside of the furnace, the vibration tool 1 can be placed precisely at a desired position inside the cylindrical concave part. Can guide (set). Additionally, since the wheels move along the furnace wall, construction can be carried out while rotating smoothly. In addition, according to the vibration tool 1 for stamp construction, the wheels absorb the impact in the direction of the furnace wall caused by the vibration pressing means 2, 2, etc. during construction, so destruction of the furnace wall can be effectively prevented. .

Furthermore, the vibration tool 1 for stamp construction is provided with an upper cross-shaped support means 16 in which the guide frame 9 is formed by fixing two upper horizontal shafts 14 and 15 so as to be orthogonal to each other in a horizontal plane. On each upper horizontal shaft 14, 15 of the upper cross-shaped support means 16, four vibrating pressing means 2, 2, . Therefore, the positions of the plurality of vibrating pressing means 2, 2, etc. can be adjusted in detail according to the condition of the bottom of the concave part (such as the hearth bottom), so stamping can be carried out very efficiently. . In addition, the vibration pressing means 2, 2, etc. are held by the upper cross-shaped support means 16 and the lower cross-shaped support means 13, and movement in directions other than the vertical direction is restricted, so that the furnace wall cannot be accidentally touched. It will not be damaged.

In addition, in the stamp construction vibration tool 1, since the engagement member 17 for engaging the hook F in a suspended state is fixed to the upper cross-shaped support means 16, it is not possible to use the stamp construction vibration tool 1 by using a hoist crane H or the like. You can easily lift it up, adjust its position, or move it to another location.

Further, in the stamp construction vibration tool 1, the wheel supports 19a to 19d for attaching the guide wheels 20a to 20d to the outside of the guide frame 9 have coil springs 25 for urging the guide wheels 20a to 20d outward. Since the guide wheels 20a to 20d are equipped with a biasing mechanism according to the present invention, even if the inner diameters are different (small diameters), the guide wheels 20a to 20d can be smoothly guided into the furnace with the guide wheels 20a to 20d pressed against the furnace wall.

Furthermore, the vibration tool 1 for stamp construction has a structure in which a bifurcated support member 30 to which the guide wheels 20a to 20d are pivoted is screwed into a nut 29 at the tip end of the inner pipe 26 using a protrusion 31. Therefore, by lowering the degree of screwing between the support member 30 and the nut 29 (shortening the length of the screwed part) and moving the guide wheels 20a to 20d forward (outside), Even if the inner diameter is slightly large, the guide wheels 20a to 20d can be smoothly guided into the furnace with the guide wheels 20a to 20d pressed against the furnace wall.

<Example of modification of vibrating tool for stamp construction>
The vibration tool for stamp construction according to the present invention is not limited to the aspects of the above-described embodiments, and the configuration of the guide frame, vibration pressing means, etc. may be modified as necessary without departing from the spirit of the present invention. It can be changed as appropriate.

For example, the vibration tool for stamp construction according to the present invention is limited to the one in which two upper horizontal shafts and two lower horizontal shafts for movably supporting the vibration pressing means are fixed to the guide frame as in the above embodiment. Instead, it is also possible to change to a single upper horizontal shaft and a single lower horizontal shaft fixed to the guide frame. Further, the vibration tool for stamp construction according to the present invention is not limited to the one in which the upper and lower support means for movably fixing the vibration pressing means are cross-shaped as in the above embodiment, but the upper and lower support means are in a Y-shape. It is also possible to change it to something like this. Further, the vibration tool for stamp construction according to the present invention has four vibration pressing means installed on the guide frame (i.e., the vibration pressing means on each upper horizontal shaft and each lower horizontal shaft), as in the above embodiment. The guide frame is not limited to a guide frame in which two or more vibrating pressing means are installed, but three or less, or five or more vibrating pressing means may be installed in a guide frame.

Further, the vibration tool for stamp construction according to the present invention is not limited to the one in which the vibration pressing means has a circular flat pressing body as in the above embodiment, but the vibration pressing means has a shape such as an ellipse or a rectangle. It is also possible to change to one having a flat pressing body other than circular. In addition, in the vibration tool for stamp construction according to the present invention, as in the above embodiment, all the vibration pressing means have flat pressing bodies of the same size (flat pressing bodies with the same bottom surface area). The present invention is not limited to the present invention, and it is also possible to change some of the vibrating pressing means to have a flat pressing body having a different size from the other vibrating pressing means. On the other hand, in the vibration tool for stamp construction according to the present invention, the vibration motor of the vibration pressing means is not limited to one that uses an external power source as in the above embodiment, but the vibration motor is supplied with power from a battery mounted on a guide frame. It is also possible to change it to something that receives.

Since the vibration tool for stamping according to the present invention has excellent effects as described above, it can be suitably used as a tool for stamping the bottom surfaces of concave parts of various shapes such as the bottom of an induction furnace. Can be done. It can also be used to construct the bottom of non-fixed containers such as ladles.

1. Vibration tool for stamp construction 2. Vibration pressing means 9. Guide frame 14, 15. Upper horizontal shaft 16. Upper cross-shaped support means 19a to 19d. Wheel support 20a to 20d. Guide wheel H...Hoist crane I...Induction furnace

Claims (4)

A vibrating tool for stamping the bottom of a concave part,
one or more vibration pressing means comprising a flat plate substantially horizontally provided at the lower end of the main shaft of the vibration motor;
It has a guide frame that movably supports the vibration pressing means in a horizontal plane,
It is possible to rotate while holding the guide frame and suspending it .
A vibrating tool for stamping a furnace bottom, characterized in that the guide frame has wheels attached to the outside for guiding the inside of the furnace . The guide frame is provided with a support means formed by fixing two or more shafts so as to be connected to each other in a horizontal plane, and the one or more vibration pressing means is suspended from each shaft of the support means. The vibrating tool for stamp construction according to claim 1, wherein the vibration tool is held in a shape. 3. The vibration tool for stamp construction according to claim 2 , wherein an engaging member for engaging the hook in a suspended state is fixed to the supporting means. Claim 1, wherein the wheel is attached to the outside of the guide frame via a support, and the support is provided with a biasing mechanism for biasing the wheel outward. The vibrating tool for stamp construction according to any one of items 3 to 3 .

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