JPH11293354A - Instrument for measuring and monitoring weight of melting electrode - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an instrument for measuring and monitoring the weight of a melting electrode for an electroslag remelting device which can avoid impacts developed during preparation or initial stage of melting and moments developed during measurement without enlarging the whole scale. SOLUTION: An instrument for measuring and monitoring the weight of a melting electrode is provided with three or more load receiving seats 8a-8c at the lower side of an upper frame 4 fitted with a stinger rod 2 for fixing the melting electrode 1 and with load cells 6a-6c at the positions corresponding to the load receiving seats 8a-8c at the upper side of a lower frame 5 fitted so as to be sockable to a vertically moving supporting frame 7. The above instrument is further provided with three or more hydraulic cylinders 9a-9c which can elevate the upper frame 4 to a position where three or more load cells 6a-6c are not loaded between the upper frame 4 and the lower frame 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a melting electrode weight measuring and monitoring apparatus used for an electroslag remelting apparatus, a vacuum consumable electrode type arc melting apparatus, an electron beam melting apparatus, and the like.

[0002]

2. Description of the Related Art Conventionally, for measuring and monitoring the weight of a melting electrode (consumable electrode) used in an electroslag remelting apparatus, a stinger rod 2 for fixing a melting electrode 1 to a stub 3 by welding or the like as shown in FIG. Three load bearings 8a, 8b, 8c (8c are not shown) are provided below the upper frame 4 attached thereto, and are rocked by a cylinder 18 on a support frame 17 which moves up and down by a device not shown. (In order to place the melting electrode 1 in a mold (not shown) so as to be parallel to the inner wall of the mold) above the lower frame 5 attached and corresponding to the load receivers 8a to 8c. Three load cell mounting plates 7a to 7c fixed in position
(7c is not shown.) The load cells 6a to 6c are fixed on the apparatus. It is also known to measure and monitor the weight of the melting electrode by measuring the entirety of these devices with a load cell.

However, in the apparatus in which the load cells 6a to 6c are provided on the lower frame 5, the impact force generated when the melting electrode collides with other equipment during the setup for melting is directly applied to the load cells 6a to 6c. 6c, load cell
6a to 6c caused damage. Further, during the measurement, a moment acted to prevent accurate measurement. In addition, the method of measuring the whole apparatus by the load cell is to measure the upper frame 4, the lower frame 5, the support frame 17, the device for vertically moving the support frame 17, and the like by the load cells 6a to 6c. However, there is a disadvantage that the method becomes complicated and the scale becomes large.

[0004]

SUMMARY OF THE INVENTION According to the present invention, there is provided an electro-magnetic device capable of avoiding an impact force generated during the preparation of melting and an initial stage of melting and a moment generated during measurement without increasing the overall scale. An object of the present invention is to provide a melting electrode weight measuring and monitoring device for a slug remelting device and the like.

[0005]

In order to solve the above-mentioned problems, in a melting electrode weight measuring and monitoring apparatus according to the present invention, a stainless steel is attached to a lower side of an upper frame on which a stinger rod for mounting a melting electrode (consumable electrode) is mounted. At least three load receiving seats are provided on the circumference around the garrod, etc., mounted on a supporting frame that moves up and down so as to be swingable, and above the lower frame that is rocked by a hydraulic cylinder or the like, and In a melting electrode weight measuring and monitoring device provided with a load cell at a position corresponding to a load seat, at least three of the upper frames can be raised between the upper frame and the lower frame to a position where a load is not applied to the load cell. Is provided.

Further, in order to achieve the above object, in the melting electrode weight measuring and monitoring apparatus of the present invention, three or more leaf springs are provided between the upper frame and the spring receiver fixed on the lower frame. That is. Further, in order to achieve the above object, in the melting electrode weight measuring and monitoring device of the present invention, a limiter is provided on the upper frame and the lower frame so that the upper frame does not move up and down outside a predetermined range.

[0007]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIGS. FIG. 1 is a conceptual plan view of an embodiment of a melting electrode weight measuring and monitoring apparatus according to the present invention, FIG. 2 is a cross-sectional view of A-OC in FIG. 1, and FIG. 3 is B-OC in FIG.
FIG. An embodiment of the melting electrode weight measuring and monitoring apparatus of the present invention is shown in FIGS. 1 to 3. The stinger rod 2 of the melting electrode weight measuring and monitoring apparatus of the present invention has a stub 3 at the lower end. Is provided, and the melting electrode 1 is fixed to the welding electrode 1 by welding or the like. Any known shape may be used.

Further, the upper frame 4 of the melting electrode weight measuring and monitoring device of the present invention is for supporting the melting electrode 1 via the stinger rod 2, and the distance between the lower frame 5 and the hydraulic cylinders 9a to 9c is adjusted. It is attached to the lower frame 5 so that it can be changed within a predetermined range by, for example, Although not shown, the upper frame 4 has a structure in which an insulating plate is sandwiched between metal plates or the like so that power is not supplied to the hydraulic cylinders 9a to 9c, the lower frame 5, and the like. In addition, the load receivers 8a to 8c (8b,
8c is not shown. ) Are provided, but the load receiving seats 8a to 8c apply loads such as the melting electrode 1 to the load cell 6a.
6c, and three or more are provided on the circumference centered on the stinger rod 2.

The lower frame 5 of the melting electrode weight measuring and monitoring apparatus of the present invention has a hole for passing the stinger rod 2 in a central portion for supporting the upper frame 4, and is not shown. It is swingably mounted on a supporting frame 17 that is moved up and down by a device, for example, a device that is guided by a main pillar and moves up and down by rotating a feed screw, and is horizontally angled by a hydraulic cylinder (power cylinder) 18 and the like. It is supported so that it can be changed. On the upper side of the lower frame 5, a load cell mounting plate is provided at a position corresponding to the load receivers 8a to 8c.
7a to 7c are fixed, and the load cells 6a to 6c are mounted thereon. The reason why the lower frame 5 is attached to the support frame 17 that can move up and down is to lower the melting electrode 1 in order to dissolve it. This is for lowering the dissolving electrode 1 attached to the upper frame 4 mounted thereon via the stinger rod 2 in parallel with the inner wall of the mold so as not to contact the mold (not shown).

In the melting electrode weight measuring and monitoring apparatus of the present invention, hydraulic cylinders 9a to 9c are provided between the upper frame 4 and the lower frame 5, and the hydraulic cylinders 9a to 9c In order to prevent the impact force generated when the dissolving electrode 1 collides with another device such as a mold during the preparation for the preparation and at the beginning of the dissolution, etc., the cylinder rods 10a to 10c (10a ,
10b is not shown. ) To extend the upper frame 4
And may be fixed to the lower frame 5 or to the upper frame 4. The number is
Any number of three or more may be used, but three is preferable because the operation is easy.

Further, in the melting electrode weight measuring and monitoring apparatus of the present invention, the leaf springs 11a to 11d are provided between the upper frame 4 and the spring supports 16a to 16d fixed on the lower frame 5 with bolts or the like.
11d is attached with bolts, etc.
1a to 11d are for absorbing a moment when a moment acts during measurement, and when the load bearings 8a to 8c of the upper frame 4 are placed on the load cells 6a to 6c, the horizontal This is for preventing movement in the direction. Further, since the plate springs 11a to 11d are used, even when the upper frame 4 is lifted by the hydraulic cylinders 9a to 9c, the upper frame 4 can be lifted while being attached. It is preferable to provide the leaf springs 11a to 11d at three or more places where possible.

Further, the melting electrode weight measuring and monitoring apparatus of the present invention is provided with limiters 12a to 12d. The limiters 12a to 12d are provided so that the upper frame 4 can move within a predetermined range when the melting electrode 1 collides with other equipment. As shown in FIGS. 1 and 3, the upper and lower limits of the moving range of the upper frame 4 are limited to the nuts 14a to 14d and 15a to 15d as shown in FIGS.
May be attached to the lower frame 5 through the holes provided in the upper frame and the holes provided in the leaf springs 11a to 11d, or may be attached to a position different from the leaf spring. Alternatively, the bolts may be fixed to the upper frame, or may have other shapes.

[0013]

Embodiment 1 An embodiment of the present invention will be described with reference to FIGS. In this embodiment, hydraulic cylinders 9a to 9c, leaf springs 11a to 11d, and limiters 12a to 12d are provided.
This is because other embodiments can be realized by omitting the installation of ~ 12d. As shown in FIGS. 1 to 3, the melting electrode weight measuring and monitoring device according to one embodiment of the present invention has a lower part of an upper frame 4 on which a stinger rod 2 for attaching the melting electrode 1 to its stub 3 by welding is provided. The load receiving seats 8a to 8c (8b, 8c are not shown) are provided, and the lower frame which is swingably mounted on a support frame 17 which moves up and down by a device not shown and which is turned by a hydraulic cylinder 18 is provided. 5, load cells 6 a to 6 c are provided at positions corresponding to the load receiving seats 8 a to 8 c, and a regular triangle is formed on the lower frame 5 between the upper frame 4 and the lower frame 5. Like three hydraulic cylinders
9a to 9c are fixed.

Further, four spring supports 16a to 16d (16b to 16d are not shown) are fixed on the lower frame 5 by bolts so as to form a regular square.
Four leaf springs 11a to 11d each having a curved portion at the center between four plates 16 to 16d and the lower side of the upper frame 4 are fixed by bolts. In addition, upper limit nuts 14a to 14d are provided as limiters 12a to 12d at the upper and lower limits of the moving range of the upper frame 4.
d and four bolts 13a to 13 that fix lower limit 15a to 15d
d is fixed to the lower frame 5 with a nut through a hole provided in the upper frame 4 and a hole provided in the leaf spring.

Next, a method of using the melting electrode weight measuring and monitoring apparatus will be described. Before setting up for melting, the hydraulic cylinders 9a to 9c are operated to operate the cylinder rods 10a to 10c.
The upper frame 4 is lifted at 10c so that the load receivers 8a to 8c do not contact the load cells 6a to 6c. By doing so, no impact force is applied to the load cells 6a to 6c. After the beginning of melting, hydraulic cylinder 9a
9c is operated to lower the cylinder rods 10a to 10c to put the load receivers 8a to 8c on the load cells 6a to 6c, and the cylinder rods 10a to 10c are retracted to positions lower than the lower limit nuts of the limiters 12a to 12d. When the melting is completed, the hydraulic cylinders 9a to 9c are actuated to lift the upper frame 4 so that the load receiving seats 8a to 8c do not contact the load cells 6a to 6c, and a setup for the end is performed. When dissolving again,
These steps are performed again.

It should be noted that the present invention is not limited to only the above-described ones, and various changes can be made without departing from the gist of the present invention.

[0017]

According to the present invention, the following advantages can be obtained by adopting the above configuration. (1) The entire scale is not increased, and it is possible to prevent the impact force generated during the dissolution preparation and at the beginning of the dissolution from being applied to the load cell. (2) Since the moment generated during measurement can be avoided by providing the leaf spring, accurate measurement can be performed. In addition, the upper frame can be moved up and down within a predetermined range, and the upper frame can be prevented from moving in the horizontal direction. (3) By providing the limiter, it is possible to prevent excessive vertical movement such as breaking the leaf spring even if the melting electrode collides with another device.

[Brief description of the drawings]

FIG. 1 is a conceptual plan view of an embodiment of a melting electrode weight measuring and monitoring device according to the present invention.

FIG. 2 is a cross-sectional view of AOC in FIG.

FIG. 3 is a cross-sectional view of BOC of FIG. 1;

FIG. 4 is a conceptual sectional view of a conventional melting electrode weight measuring and monitoring device.

[Brief description of reference numerals]

 Reference Signs List 1 melting electrode 2 stinger rod 3 stub 4 upper frame 5 lower frame 6a-6c load cell 7a-7c load cell mounting plate 8a-8c load receiver 9a-9c, 18 hydraulic cylinder 10a-10c cylinder rod 11a-11d leaf spring 12a- 12d limiter 13a to 13d bolt 14a to 14d upper limit nut 15a to 15d lower limit nut 16a to 16d leaf spring support 17 support frame

Claims (3)

[Claims] 1. A support frame provided with three or more load receiving seats (8a to 8c) below an upper frame (4) to which a stinger rod (2) to which a dissolving electrode (1) is mounted is attached. Melting electrode weight measurement and monitoring device provided with load cells (6a to 6c) above the lower frame (5) swingably attached to (18) and at positions corresponding to the load seats (8a to 8c). , Three or more hydraulic cylinders (3) capable of lifting the upper frame (4) between the upper frame (4) and the lower frame (5) to a position where a load is not applied to the load cells (6a to 6c). Dissolution electrode weight measurement and monitoring device characterized by the provision of 9c). 2. A leaf spring (11a-11d) is provided at three or more places between the upper frame (4) and the spring supports (16a-16d) fixed to the lower frame (5). The melting electrode weight measuring and monitoring device according to claim 1. 3. A melting electrode weight measuring and monitoring device according to claim 1, wherein limiters (12a to 12d) are provided so that the upper frame (4) does not move up and down beyond a predetermined range. .