JP5303261B2 - Suspension for conveying raw material holding container and raw material holding container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hanging implement for conveying a raw material holding container for supplying a raw material to an electron beam melting furnace of high melting point metal, and also to provide a device structure for efficiently and safely conveying the raw material holding container used for the hanging implement. <P>SOLUTION: The hanging implement for conveying the raw material holding container is composed of: a crane engaging hook; a support frame for supporting the raw material holding container and the whole hanging implement for conveying the raw material holding container; a body frame for supporting the raw material holding container; a horizontal moving means for moving the support frame horizontally relative to the body frame; and a positioning means for positioning the body frame and the hanging implement for conveying the raw material holding container. The raw material holding container conveyed using the hanging implement for conveyance is provided with fitting holes and grooves for inserting positioning bars serving as positioning means for the hanging implement for conveyance, and/or through-holes for inserting hanging pins, in an external wall part of the raw material holding container and/or in flanges at both ends. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a raw material holding container for supplying a raw material to a metal electron beam melting apparatus and a hanger used for transporting the raw material holding container.

  With the recent diversification of demand and demand for high purity, metallic titanium has been actively produced in an ingot using an electron beam melting furnace in addition to a vacuum arc melting furnace.

  Unlike a vacuum arc melting furnace, an electron beam melting furnace has a feature that a titanium raw material such as granular sponge titanium can be melted as it is without compacting the titanium raw material. Therefore, the granular raw material is continuously supplied to the hearth in the furnace from the raw material holding container provided in the electron beam melting furnace.

  As the raw material holding container, for example, a removable raw material holding container called an Archimedes can as disclosed in Patent Document 1 is used. The Archimedes can is a cylindrical container in which a spiral passage is formed inside and one end is releasable, and the Archimedes can in which a melting raw material such as sponge titanium is loaded is horizontally disposed. By rotating, the melting raw material moves through the spiral passage and is discharged from a discharge port provided at one end of the Archimedes can. The melting raw material discharged from the Archimedes can is continuously supplied to the hearth by the vibration feeder.

  After the melting raw material charged in the Archimedes can is exhausted, the empty Archimedes can is detached from the electron beam melting furnace and moved out of the furnace, and then the Archimedes can is loaded with the melting raw material again. The Archimedes can loaded with the melting raw material is moved to the electron beam melting furnace and again subjected to electron beam melting.

  As described above, the Archimedes can is repeatedly attached to and detached from the electron beam melting furnace. However, this operation is inefficient and needs to be improved. Further, the wire-hanging operation on the Archimedes can takes time to find the position of the center of gravity for the Archimedes can to be stably suspended during transfer.

  Regarding such a point, in the work of hanging the steel pipe, it is possible to move the long steel pipe efficiently by moving the gripping claw provided on the frame on which the steel pipe is suspended to determine the position of the center of gravity in the horizontal direction. It is known that it can be performed (for example, refer to Patent Document 2).

  However, since the technique disclosed in Patent Document 2 is a method of moving a jig gripped by a long steel pipe, both of a gripping claw for gripping a steel pipe and both of moving the gripping claw along the steel pipe. It is necessary to incorporate a mechanism, and the apparatus configuration is complicated. In addition, there is a problem that the weight of the apparatus is increased and the load on the crane is reduced.

  Further, in the work of hanging a heavy heavy object, the position of the center of gravity is measured by a load meter that suspends the hook block for the sling provided on the main hanging object that suspends the heavy object, and the balance provided on the main hanging object. It is known that an elongate heavy object can be efficiently moved in an equilibrium state by moving the frame horizontally (see, for example, Patent Document 3).

  However, since the technique disclosed in Patent Document 3 is a method of moving the balance based on the measurement value of the load cell, the configuration of the apparatus becomes complicated. In addition, there is a problem that the durability decreases when receiving an impact during lifting and landing.

  Thus, there is a demand for a lifting tool that can move or operate the Archimedes can securely, efficiently, and safely.

JP 2004-149820 A Japanese Utility Model Publication No. 63-015265 Japanese Patent Laid-Open No. 08-101088

  The present invention relates to a material holding container transfer suspension used for an electron beam melting furnace and an apparatus structure related to the material holding container used therefor, and the material holding container capable of efficiently and safely conveying the material holding container. It is intended to provide a lifting device for transportation and a material holding container suitable for the lifting device.

  In view of this situation, the above-mentioned problems have been intensively studied. As a result, the support frame constituting the hanger of the raw material holding container loaded with the raw material is referred to as a raw material holding container (hereinafter sometimes referred to as “Archimedes can”). It has been found that the above-mentioned problem can be effectively solved by configuring the main body frame to be supported, and the present invention has been completed.

That is, the material holding container transfer suspension of the present invention is a material holding container transfer suspension for supplying a raw material to an electron beam melting furnace of a refractory metal, and includes a crane engaging hook, a material holding container, and a material holding A support frame that supports the entire container transporting suspension, a main body frame that supports the raw material holding container and that is provided with the first positioning bar and the second positioning bar of the raw material holding container, and the support frame to the main body frame. A horizontal moving means for moving the material holding container in a horizontal direction, a container suspension leg on which a material holding container suspension pin and a suspension pin driving device are mounted, and a material holding container suspended from the material holding container. abutment members for the raw material holding container mounting rack Ri is Do and a disposed a support leg, further, fitted to the fitting member first positioning bar is formed in the raw material holding container and the second largest The positioning bar is configured to be fitted in a fitting groove formed in the raw material holding container .

  The horizontal movement means preferably includes a horizontal movement screw that moves the support frame in the horizontal direction with respect to the main body frame, and a drive motor that drives the horizontal movement screw. It is further preferable that a control device is provided so that a driving motor for driving the driving screw can be remotely operated, and that the driving screw is a trapezoidal screw or a square screw.

  It is preferable that a horizontal position indicating needle is disposed at the lower end of the indicating frame, and a horizontal position scale indicating the position of the horizontal position indicating needle is disposed on the main body frame.

  It is preferable that a tilt position indicating needle is tiltably disposed at an upper end of the support frame, and a tilt position scale is disposed on a support frame corresponding to a tip portion of the tilt position indicating needle. It is what.

  The container suspension leg disposed on the main body frame is preferably provided with the material holding container suspension pin and the suspension pin driving device.

  It is preferable that a contact member that contacts the raw material holding container is disposed on the support leg disposed on the main body frame.

  The main body frame is preferably provided with a first positioning bar and a second positioning bar, which are horizontal positioning means for the material holding container transport hanger.

In addition, a first positioning bar fitting member in which a fitting hole for inserting the first positioning bar is formed on the side wall portion of the raw material holding container held by the raw material holding container transfer suspension of the present invention. It is a preferable aspect.

  Moreover, it is set as a preferable aspect that the fitting groove which receives a 2nd positioning bar is formed in the side wall part of an upper raw material holding container.

Further, at both end portions of the raw material holding container to the raw material holding container transport sling of the present invention holds, a through hole for inserting a suspension pin is suspension means between the material holding container transporting hanger is formed This is a preferred embodiment.

  By using the material holding container transport suspension and the material holding container of the present invention, the material holding container filled with the melting material can be efficiently and safely transported and mounted in the electron beam melting furnace. It has the effect of being able to do it.

The best embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 shows an example of a preferred embodiment of the material holding container transfer suspension M and the material holding container N of the present invention.

  The material holding container transfer suspension M according to the present invention includes a crane engagement hook 1 that is directly engaged with a crane hook, a material holding container N that is a load suspended by the crane engagement hook 1, and a transfer suspension M. A support frame 2 that supports the whole, a main body frame 6 that supports the raw material holding container N, a drive screw 3 that moves the support frame 2 in a horizontal direction with respect to the main body frame 6, and the drive screw 3 and the main body frame And a driving motor 4 that rotates the driving screw 3 to move the main body frame 6 in the horizontal direction.

  The main body frame 6 is positioned horizontally with respect to the raw material holding container N and the container suspension leg 20 provided with four sets of suspension pins 7 for engaging and supporting the raw material holding container N as a suspended load. A first positioning bar 5 and a second positioning bar 23 for positioning in the direction are disposed.

  FIG. 2 shows a state in which the suspension pin 7 is inserted into the through hole 14 provided in the flange 13 of the raw material holding container N shown in FIG. As described above, two sets of through-holes 14 are formed in the flange 13, and one set of suspension pins 7 is attached to each through-hole 14.

  Since the above structure is formed in the flange portions at both ends of the raw material holding container N, the raw material holding container N is engaged by a total of four sets of the suspension pins 7.

  Further, it is preferable that a support leg 10 is disposed on the main body frame 6 and a contact member 19 is disposed on the lower end portion thereof. By placing the contact members 19 on the support legs 10 and both ends of the raw material holding container N and placing them on the end surfaces of the flanges 13, the relative position of the main body frame 6 and the raw material holding container N in the vertical direction can be changed. It can be confirmed.

  The abutting member 19 can be smoothly abutted on and mounted on the flange 13 by, for example, a wheel structure with a roller installed therein.

  The main body frame 6 according to the present invention is preferably provided with a first positioning bar 5 and a second positioning bar 23 for determining the horizontal position of the raw material holding container N as shown in FIG. The first positioning bar 5 is disposed through a first positioning bar through hole 15 formed in the main body frame 6.

  The first positioning bar 5 is disposed so as to freely slide up and down in the vertical direction.

  Moreover, the front-end | tip part of the 1st positioning bar 5 and the fitting hole formed in the 1st positioning bar fitting member 12 are shape | molded in the taper shape, and the 1st positioning bar 5 is obtained so that appropriate horizontal positioning force may be obtained. The weight of is optimized.

  Therefore, when positioning the main body frame 6 to the raw material holding container N, the raw material holding container transporting suspension M is moved so that the first positioning bar 5 is almost directly above the first positioning bar fitting member 12. Thus, by lowering the main body frame 6, accurate positioning can be performed by fitting the first positioning bar 5 into the fitting hole formed in the first positioning bar fitting member 12.

  In addition, the first positioning bar 5 can be configured to be moved up and down by remote operation by mounting an automatic lifting device separately.

  In the present invention, it is preferable that the main body frame 6 is disposed so as to penetrate the second positioning bar 23 as shown in FIG. On the other hand, a second positioning bar fitting groove 24 for receiving the second positioning bar 23 is preferably formed on the surface of the side wall of the raw material holding container N.

  The tip of the second positioning bar 23 and the second positioning bar fitting groove 24 are tapered, and the weight of the second positioning bar 23 is optimal so that an appropriate horizontal positioning force can be obtained. It has become.

  By setting it as the above structures, the horizontal plane direction rocking | fluctuation in the longitudinal direction of the material holding container conveyance suspension M can also be suppressed effectively.

  In place of the second positioning bar 23 and the second positioning bar fitting groove 24, the same device configuration of the first positioning bar 5 and the second positioning bar fitting member 12 may be arranged. .

  The drive screw 3 is preferably a screw having a trapezoidal or square tooth profile. By configuring the drive screw 3 with the trapezoidal or square screw as described above, it is possible to effectively suppress the relative movement of the instruction frame 2 and the main body frame 6 when the raw material holding container N is conveyed. Is.

  It is preferable to attach the indicator plate 8 which pivotally supported the upper side edge part to the lower end part of the support frame 2 which comprises the hanger M for material holding container conveyance which concerns on this invention.

  A scale 9 is displayed on the main body frame 6. Due to the position below the horizontal position indicating plate 8 on the scale 9, the support frame 2 is placed at the center of gravity of the raw material holding container transporting suspension M when the empty raw material holding container not charged with raw materials is lifted. There is an effect that it can be moved in a short time by visual observation.

  Furthermore, the support frame 2 can be visually observed in a short time to the expected center of gravity position of the raw material holding container N charged with the raw material.

  It is preferable that the tilt position indicating needle 21 is tiltably disposed at the upper end portion of the material holding container transporting suspension M according to the present invention. Further, it is preferable that a tilt position scale 22 is disposed on the support frame 2 at the tip of the tilt instruction needle 21.

  By disposing the tilt indicating needle 21 and the tilt position scale 22 as described above, the horizontal tilt of the main body frame 6 that occurs when the raw material holding container N is mounted on the main body frame 6 via the suspension pins 7. The effect of being able to accurately see the image is achieved.

  The above-described material holding container transfer suspension M is preferably made of carbon steel, but can also be made of stronger tool steel. The Archimedes can 11 is also preferably made of carbon steel, but the inner surface of the Archimedes can 11 may be made of a titanium material, thereby suppressing contamination of the titanium raw material held in the Archimedes can and improving the quality. Can be maintained at a high level.

  3 is a view of the raw material holding container N in FIG. 1 as viewed from the right (or left) direction of the drawing. As shown in FIG. 3, the outer peripheral area of the flange 13 provided at both ends of the Archimedes can 11 includes a notch that includes the apex of an isosceles triangle having two through-holes 14 provided in the flange 13 as bases. 17 is preferably provided. By providing the notches 17 as described above, the Archimedes can 11 does not roll when the raw material holding container N is kept on a horizontal plane, so that the positions of the two through holes 14 are reproducible. The effect is that it can be well placed on the horizon.

  Next, a method for transporting the raw material holding container N using the raw material holding container transporting suspension M will be described below. First, after the raw material holding container N in an empty state is rearranged from the horizontal direction to the vertical direction on the gantry, the upper side of the raw material discharge ports 18 provided at both ends of the raw material holding container N is opened, thereby The raw material holding container N is loaded with the raw material for dissolution, and after the charging of the raw material for dissolution is completed, the raw material holding container N is returned to the horizontal direction on the stand and waited.

  After the raw material holding container transfer suspension M engaged with the crane hook 1 is moved on the raw material holding container N waiting in the horizontal direction, the transfer suspension M is lowered to move the main body frame 6. The first positioning bar 5 engaged with is moved onto the first positioning bar fitting member 12 disposed on the surface of the Archimedes can 11. Next, after appropriately moving the crane hook in the horizontal plane, the tip of the first positioning bar 5 is lowered and fitted into the fitting hole formed in the first positioning bar fitting member 12.

  Next, by engaging the second positioning bar 23 with the fitting groove, the horizontal position of the material holding container transfer suspension M can be determined.

  Further, the main body frame 6 is lowered and the contact member 19 provided at the lower end of the support leg 10 is placed on the flange 13 provided at both ends of the raw material holding container N.

  With the above operation, the horizontal and vertical positioning of the raw material holding container N can be completed.

  After completion of the fitting operation, the suspension pin 7 which has been retracted in advance toward the center of the main body frame 6 is attached to the flange 13 of the raw material holding container N by the cylinder driving device in which the container suspension leg 20 is built. It penetrates through the through-hole 14 provided in. By carrying out the operation as described above, the transfer hanger M and the raw material holding container N can be engaged.

  Next, after the horizontal position indicating needle 8 has been moved to a predetermined position, the raw material holding container transfer suspension M engaged with the raw material holding container N is slightly lifted from the grounding surface, and is tilted attached to the main body frame 6. The horizontal balance of the lifting device M can be confirmed by the position indicating needle 21 and the tilt position scale 22.

  The raw material holding container N is filled with a predetermined amount of the raw material for dissolution each time. However, in the field operation, there is a case where the horizontal balance cannot be achieved due to variations in the filling amount and the angle of repose of the filler.

  If the horizontal balance cannot be achieved, the drive motor 4 is operated while the raw material holding container N is lifted by the raw material holding container transporting suspension M, so that the support frame 2 is horizontal with respect to the main body frame 6. By appropriately moving in the direction, there is an effect that the raw material holding container transfer container suspension M engaged with the raw material holding container N can be balanced horizontally.

  In addition, the main body which can move the support frame 2 with respect to the main body frame 6 in the horizontal direction in a state where the raw material holding container N is lifted by the raw material holding container transporting suspension M for ensuring safety and restricting facility capacity. The tilt of the frame 6 is limited, and the allowable tilt range is clearly shown on the tilt position scale 22.

  In the above operation, the horizontal balance of the main body frame 6 is poorly inclined because the horizontal position of the support frame 2 is wrong or the center of gravity of the raw material holding container N containing the filler is greatly different from the planned position. When the tilt position indicating needle 21 points outside the allowable tilt range clearly indicated on the tilt position scale 22, the raw material holding container N is once lowered to the flower to adjust the horizontal position of the support frame 2, and then the raw material holding is performed again. Lift the container N and check the horizontal balance.

  Thus, by using the raw material holding container N and the raw material holding container transport suspension M according to the present invention, the inclination of the raw material holding container N can be corrected according to the bias of the raw material held by the raw material holding container. Compared to the wire operation, the work of transporting the raw material holding container N can be carried out safely in a short time, and since it is an engagement operation by mechanical means, it has the effect of being strong against impacts during slinging work. .

[Example 1]
1. Test conditions 1) Raw material holding container: Archimedes can Size: φ1200 × L4000 (mm)
Load: Sponge titanium 2) Suspension for transporting raw material holding container Use the one shown in Fig. 1 3) Melting furnace Sponge titanium loaded in the Archimedes can is transferred to the hearth using a hearth type electron beam melting furnace. The titanium ingot was melted by supplying.

2. Test Results In the above-described melting of the titanium ingot, the installation and desorption of Archimedes cans were repeated five times in the middle, and the time required for the installation and desorption was measured.

[Comparative Example 1]
In Example 1, without using the material holding container transfer suspension M according to FIG. 1, the wire was directly wound around the Archimedes can, the Archimedes can was transported with a crane, and the time required for the transport operation was measured.

  Table 1 shows the transfer time when the first transfer operation performed in Example 1 is 100. As shown in the same table, in Example 1, since it was possible to quickly determine the center of gravity and correct the position according to the bias of the contents during any conveyance, the total compared to the comparative example It was confirmed that the five transport times were all shortened and the transport time was reduced by about 15%. It was also confirmed that there was little variation in each conveyance time.

  On the other hand, in the comparative example, the position of the wire was corrected so that the Archimedes can can be horizontally balanced, and transported while confirming safety so that the Archimedes can did not fall off. For this reason, not only the transport time is longer than in the embodiment, but also the variation in the transport time is increased.

  According to the material holding container transporting suspension and the material holding container of the present invention, the material holding container can be safely and smoothly attached and detached when supplying the raw material. As a result, titanium by the electron beam melting furnace can be obtained. Contributes to efficiency improvement in ingot production.

It is a side view which shows the raw material holding container of this invention, and its suspension tool. It is the figure which looked at the connection part of the raw material holding container in FIG. It is the figure which looked at the raw material holding container in FIG. 1 from the left-right direction. It is a figure which shows the connection of a 2nd positioning bar and a fitting groove.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Crane engagement hook, 2 ... Support frame, 3 ... Drive screw, 4 ... Drive motor, 5 ... First positioning bar, 6 ... Main body frame, 7 ... Hanging pin, 8 ... Horizontal position indicator needle, 9 ... Horizontal position scale, 11 ... Archimedes can body, 12 ... First positioning bar fitting member, 13 ... Flange, 14 ... Through hole, 15 ... First positioning bar through hole, 16 ... Drive screw support, 17 ... Notch , 18 ... Raw material discharge port, 19 ... Contact member, 20 ... Container suspension leg, 21 ... Tilt position indicating needle, 22 ... Tilt position scale, 23 ... Second positioning bar, 24 ... Second positioning bar fitting groove , M: Suspension for conveying raw material holding container, N: Raw material holding container.

Claims (7)

A suspending tool for transporting a raw material holding container for supplying a raw material to an electron beam melting furnace for a high melting point metal
The raw material holding container transport suspension is
A crane engaging hook,
A support frame for supporting the raw material holding container and the whole raw material holding container transport suspension;
While supporting the raw material holding container, a main body frame provided with the first positioning bar and the second positioning bar of the raw material holding container ,
Horizontal moving means for moving the support frame with respect to the main body frame in a horizontal direction;
A container suspension leg that is mounted with a suspension pin for the material holding container and a suspension pin driving device for suspending the material holding container ,
A support leg mounted on the raw material holding container and having a contact member for mounting the raw material holding container at the lower end;
Tona is,
Further, the first positioning bar is configured to be fitted into a fitting member formed in the raw material holding container, and the second positioning bar is configured to be fitted into a fitting groove formed in the raw material holding container. A suspension for transporting a raw material holding container characterized by the above. The horizontal moving means includes
A horizontal movement screw for moving the support frame in a horizontal direction with respect to the main body frame;
This horizontal movement screw
The suspension tool for conveying a material holding container according to claim 1, comprising a driving motor to be driven. The horizontal movement screw
3. The material holding container transporting hanger according to claim 2, wherein a control device is also provided so that a driving motor to be driven can be remotely operated. A horizontal position indicator needle is disposed at the lower end of the support frame,
4. The raw material holding container transport suspension according to claim 1, wherein a horizontal position scale indicating the position of the horizontal position indicating needle is disposed on the main body frame. At the upper end of the support frame, a tilt position indicator needle is tiltably disposed,
On the support frame corresponding to the tip of the tilt position indicator needle, a tilt position scale is provided.
The material holding container transporting hanger according to claim 1, wherein the material holding container transporting hanger is disposed. 2. The material holding container transporting suspension device according to claim 1, wherein the suspension pin driving device is provided with a control device that can be remotely operated. The said horizontal movement screw is a trapezoidal screw or a square screw, The material holding container conveyance suspension tool of Claim 2 characterized by the above-mentioned.

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