JP2009106989A - Facial pressure applying device for sliding nozzle apparatus, and toggle changeover driving device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple facial pressure applying device which does not use man power, and also has no problem about heat in a high temperature environment. <P>SOLUTION: The engagement holes 14b of a pair of engagement plate bodies 14a forming the supporting part 14 of a supporting frame fixed to an opening/closing metal flask not shown in figure are engaged with a pair of shaft bodies 17 in an attachment 15, and the part 26 to be supported in the actuator 20 is supported in the supporting hole 19a of the hollow cylindrical body 19 in the attachment 15. In this state, an inserting shaft 22a in the actuator 20 is inserted into an inserting hole formed at a pressing member in a toggle mechanism, thus the facial pressure applying device in the embodiment of this invention is formed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a surface pressure applying device in a sliding nozzle device that opens and closes a metal spout and a toggle switching drive device for switching a toggle mechanism of the surface pressure applying device.

  Conventionally, it is a widely used technique to open and close the outlet using a slide gate at the outlet of the molten metal container. This slide gate is composed of a plate made of a pair of refractories, and one of the plates slides to control the state of the hot water at positions such as full open, half open, fully closed, etc. The sliding of the slide plate is performed by using a hydraulic device or the like in a state where no surface pressure acts between the plates. And when controlling the molten metal at the tap, especially when the tap is partially opened from fully closed to half open, when the molten metal exerts a strong pressure on the slide gate, the pair of plates and their plates are If each of the metal frames supported from both sides is not in contact with a strong surface pressure, an unexpected outflow of the molten metal can occur between the contact surfaces. Therefore, various techniques have been proposed so that the surface pressure acts on the slide plate or the like with a certain force or more.

The technique disclosed in Patent Document 1 relates to a surface pressure applying device using a toggle mechanism that uses a compression spring, and compresses the compression spring to prevent it from being deteriorated by exposure to a high temperature environment. The spring is housed in a coolable housing to improve the service life of the compression spring. Although the technique disclosed in Patent Document 2 is a device that applies a surface pressure using a compression spring as in Patent Document 1, a force for compressing the compression spring is generated by tightening a bolt. Similarly, the technology disclosed in Patent Document 3 relating to a surface pressure applying device using a toggle mechanism that uses a compression spring is based on the fact that surface pressure acts on the surface pressure member of the toggle mechanism by an actuator installed on an opening / closing metal frame. It is driven in the direction to do.
Japanese Utility Model Publication No. 59-17497 (see “Scope of Claim for Utility Model Registration” and FIG. 4) JP 54-132432 A (see FIG. 7) JP-A-5-169213 (see FIGS. 3 to 6)

Although each of the techniques disclosed in Patent Documents 1 to 3 has an effect as a result of solving the problem, another problem is inherent, and there is a demand for solving the problem.
In Patent Document 1, although the service life of the compression spring is remarkably extended, in order to operate the toggle mechanism of the surface pressure applying device, a lever operation by human power is required, and work in a high temperature environment is easy. It is not a thing. For example, lever operation related to large molten metal containers requires a large force, so it is necessary to deal with two people, or if one person is using a long lever, etc. There is a space problem.

  In the technique disclosed in Patent Document 2, a compression spring is stored by tightening a bolt using a power tool such as an electric power or a bolt is loosened each time work for loading and removing surface pressure is performed. Therefore, there is no problem associated with the above-described device that relies on human power. In addition, the power tool has no problem of being exposed to a high temperature, and has a surface that requires a relatively simple device. However, since an expensive power tool is used, there is a problem of increased cost, and there is a problem of noise accompanying generation of a strong force in the power tool.

  In the technique disclosed in Patent Document 3, even if the surface pressure applying device uses a toggle mechanism, the surface pressure member of the toggle mechanism is operated using a hydraulic cylinder. No problem. However, according to the technique disclosed in the embodiment, the hydraulic cylinder is installed on the opening / closing metal frame, and there is a concern about the problem of the service life in a high-temperature environment, which is regarded as a problem in Patent Document 1. In order to solve the problem, it seems that a heat insulating device and a cooling device as necessary are required.

  The present invention has been made paying attention to such a problem, and the object of the present invention is a simple device without using human power, and without a problem of heat in a high temperature environment. Is to be able to open and close.

  In order to achieve the above object, in the invention according to claim 1 relating to the surface pressure applying device of the sliding device, a slide plate for opening and closing the outlet of the molten metal container is provided, and the surface pressure is applied to the slide plate. In the surface pressure applying device of a sliding nozzle device using an addable toggle mechanism, the molten metal container is provided with a support portion that can removably support an actuator having an extendable rod, and the actuator is supported by the support portion. In this state, the joint at the tip of the telescopic rod is connected to the toggle mechanism.

  In the invention of claim 2, in the invention of claim 1, the molten metal container is provided with a support frame, and the support frame is formed with a substrate and a side plate perpendicular to the substrate. The support part is provided inside the corner part between the side plates.

  In the invention of claim 3 related to the toggle switching device, an actuator having a joint for connecting to the toggle mechanism at the tip of the telescopic rod and an attachment used as a sliding nozzle device are provided, and the attachment is provided on the body of the attachment. A shaft body fixed to one surface and a support hole fixed to the other surface of the attachment main body and having an axis parallel to the shaft body, and the supported portion of the actuator is rotated in the support hole. It is supported movably.

  According to a fourth aspect of the present invention, in the third aspect of the invention, the shaft body is composed of one or two shafts, a pair of the shaft bodies are arranged vertically, and one shaft body is paired with the other shaft body. They are arranged on the same axis.

  According to a fifth aspect of the present invention, in the third or fourth aspect of the invention, the supported portion is a round bar-like body formed in a direction perpendicular to the axis of the actuator on the tip end side of the actuator.

  According to the present invention, the actuator that drives the toggle mechanism for loading the surface pressure in the sliding nozzle device is detachably supported by the support frame fixed to the opening / closing metal frame via the attachment. Each time the surface pressure is loaded or removed, the actuator can be supported by the support frame, or the actuator can be removed from the support frame. When the operation is completed, the actuator can be removed from the support frame.

  According to the present invention, the toggle can be switched without using human power, and the problem of heat in a high temperature environment can be solved.

(First embodiment)
Hereinafter, an embodiment of a surface pressure applying apparatus embodying the present invention will be described with reference to FIGS. Unless otherwise specified, the material of each member of this embodiment is assumed to be steel or other general-purpose metal, and the member forming the tap is a general-purpose refractory material such as ceramic.

  First, a mechanism for applying a surface pressure to the sliding nozzle device 30 will be described with reference to FIGS. Both figures show only the configuration on the left side of the sliding nozzle device 30 with the center line O as a boundary, and are partial sectional views in which the configuration on the right side is omitted.

  In the sliding nozzle device 30, the middle plate 36 is slidably supported in the direction perpendicular to the plane of FIG. 5 and FIG. The lower plate 47 is fixed to the opening / closing metal frame 37. A compression spring 39 is accommodated in the spring boxes 38 on both the left and right sides of the opening / closing metal frame 37, and the compression spring 39 is pressed by a clamp 40. A shaft body 41 protrudes from the clamp 40. A pin 46 protrudes from the distal end of the main link 45 that is rotatably supported at the base end of the housing 32 of the sliding nozzle device 30, and a pressing member 42 as a secondary link is rotatably supported on the pin 46. Is done. The pressing member 42 has an engaging groove 43 at an end thereof engaged with the shaft body 41. A toggle mechanism 50 is formed by the main link 45, the compression spring 39, the pressing member 42, and the like.

  In the toggle mechanism 50, the dead point D passing through the center of the shaft 45 a and the pin 46 when the pressing member 42 is operated in the direction of arrow A by the actuator 20 described later from the state shown in FIG. 6 and is moved to the position shown in FIG. 6, the compression spring 39 is maintained in a stored state and is in a locked state. In this locked state, surface pressure is applied to the sliding surface between the middle plate 36 and the upper plate 33 through the opening / closing metal frame 37 and the lower plate 47 by the repulsive force of the compression spring 39. Therefore, in this state, the middle plate 36 is locked. Further, when the pressing member 42 is operated in the direction of arrow B by the actuator 20 from the locked state shown in FIG. 6, the dead point D passes through the center of the shaft body 41 (from the dead point D). When it is moved to a position far away, it will be in a released state. In this released state, since the stored force of the compression spring 39 disappears, the surface pressure on the sliding surface between the middle plate 36 and the upper plate 33 is released. Accordingly, in this state, the opening / closing metal frame 37 is openable.

  As shown in FIGS. 1 and 2, the support frame 10 fixed to the opening / closing metal frame 37 is formed by bending the substrate 11 having a through hole 11 a at the center and perpendicularly to the substrate 11 at two opposite sides thereof. And a side plate 12b fixed to the substrate 11 at a right angle in the vicinity of another opposing two sides. A pair of engagement plate members 14a are fixed to the inner corners of the both side plates 12a at intervals, and an engagement hole 14b is formed in the engagement plate member 14a. The height of the engagement plate 14a is set in a range that does not exceed the height of the side plate 12a because it interferes with work if it protrudes from the side plate 12a. On both side plates 12a, reinforcing plates 12c that are parallel to the substrate 11 and directed in opposite directions are bent. These side plates 12a to 12c perform a reinforcing function. An opening indicated by reference numeral 13 is for avoiding interference between a joint 23 of the actuator 20 described later, the pressing member 42 and the side plate 12a.

  The attachment 15 of the toggle switching device shown in FIG. 3 includes a rectangular attachment main body 16, a support 16 a bent at both ends of the main body 16 in the same direction, and two lower surfaces of each support 16 a. A pair of shafts 17 are provided side by side and form a pair. The upper and lower shaft bodies 17 are located on two identical axes. The other side surface of the main body 16 is provided with a hollow cylinder 19 supported between the pair of plate-like bodies 18 and having an axis parallel to the shaft body 17, and the inner surface of the hollow cylinder 19 has a support hole 19 a. Forming.

  FIG. 4A showing the actuator 20 of the toggle switching device is a plan view, and FIG. 4B is a front view. The actuator 20 uses a hydraulic cylinder 24. A handle 25 bent at two locations is fixed to the base end of the hydraulic cylinder 24, and a supported portion 26 of a round bar-like body projecting in a direction perpendicular to the axis of the hydraulic cylinder 24 is mutually connected to the distal side block 28. It is fixed in two places so that it is opposite. A joint 23 is attached to the tip of a telescopic rod 27 extended from a piston rod (not shown) of the hydraulic cylinder 24. The joint 23 includes a block 21c having a pin 21a and a fitting shaft body 22 pivotally supported by the pin 21a. The fitting shaft body 22 is integrally formed with a fitting shaft 22a. ing. The supported portion 26 and the pin 21a are arranged so as to be parallel to each other.

  Then, one of the pair of upper and lower shaft bodies 17 of the attachment 15 is inserted into the two engagement holes 14b of either one of the left and right engagement plate bodies 14a in FIG. It is supported by the plywood body 14a. In this state, the side 16b of the support 16a abuts on the inner side of the side plate 12a, and the side 16c abuts on the substrate 11, so that the attachment 15 is supported in a state where it cannot rotate. When attaching the attachment 15 to the support 14 on the other side, another shaft body 17 is used. In this case, the side 16d of the support 16a abuts on the inner side of the side plate 12a on the other side, and the side 16c is the substrate. Similarly, the attachment 15 is supported so that it cannot rotate.

  The supported portion 26 is rotatably inserted into the support hole 19a of the attachment 15 supported by the support portion 14 of the support frame 10, and the actuator 20 is supported rotatably. Further, the fitting shaft 22 a of the fitting shaft body 22 is fitted into the fitting hole 44 of the pressing member 42. At this time, the operator holds the handle 25 with the right hand and the upper supported portion 26 with the left hand, thereby fitting the fitting shaft 22a into the fitting hole 44 and then lowering the supported portion 26 on the lower side. The actuator 20 can be easily set while aligning with the support hole 19a. Further, when the actuator 20 is moved to the right side of the support frame 10 in FIG. 1, after the attachment 15 is moved to the right side, the actuator 20 is turned upside down so that the upper and lower supported portions 26 are reversed, What is necessary is just to support to the attachment 15 similarly to.

  When the actuator 20 is operated in the set state of the actuator 20 and the telescopic rod 27 is expanded and contracted, the pressing member 42 rotates in the direction A of FIG. 5 or the direction B of FIG. The toggle mechanism is switched to one side or the other side of the dead point. Accordingly, the surface pressure is applied to or released from the middle plate 36.

Here, according to the embodiment, the following effects can be obtained.
(1) In the above embodiment, the support portion 14 is formed on the support frame 10 fixed to the opening and closing metal frame 37 of the molten metal container, and the supported portion 26 of the actuator 20 that operates the toggle mechanism 50 in the sliding nozzle device is attached and detached. I was able to support it as much as possible. Therefore, whenever it is necessary to control the addition and release of the surface pressure with respect to the sliding nozzle device, the actuator 20 may be supported by the support portion 14, and the actuator 20 is less susceptible to the influence of the molten metal container in the high temperature environment. There is.

  (2) In the above embodiment, in order to support the actuator 20, the bottomed box-like support frame 10 is fixed to the front surface of the opening and closing metal frame 37, and a pair of engagements are respectively provided inside the pair of side plates 12 a in the vertical direction. A plywood body 14a was formed, and an engaging hole 14b was formed in the engaging plate body 14a to form a support portion 14. Therefore, although it is a simple structure, the actuator 20 can be detachably supported.

  (3) In the above embodiment, the detachable attachment 15 is attached to the support portion 14 of the support frame 10, and the actuator 20 is supported via the attachment 15. Therefore, the support hole 19 a of the attachment 15 that supports the actuator 20 can secure a sufficient height from the substrate 11 for smoothly operating the actuator 20, and the engagement plate 14 a that forms the support portion 14. Is not required to be higher than the height of the side plate 12a. Therefore, in a state where the actuator 20 and the attachment 15 are not attached, there is no member projecting outward from the frame formed by the longitudinal side plate 12a and the lateral side plate 12b of the support frame 10, which is convenient for work.

  (4) In the above-described embodiment, the supported portion 26 of the actuator 20 is engaged with the support portion 14 formed on the support frame 10, and the two sides 16 b and 16 c of the support 16 a of the attachment 15 that are orthogonal to each other or 16 c and 16 d can be brought into contact with the side plate 12 a and the substrate 11 of the support frame 10. Therefore, even if there is one shaft body 17 formed on each of the two support bodies 16a, the attachment 15 can be supported in a stable state in which it does not rotate and does not move laterally. .

  (5) In the above embodiment, since the two shaft bodies 17 are formed on the support bodies 16a at both ends of the attachment 15, respectively, the support body 10 has the support holes 14b in the support frame 10 with respect to the engagement holes 14b. By using either one of the left and right shafts 17, the attachment 15 can be used for both left and right. Further, if two engagement holes 14b are formed in the engagement plate 14a, the two shaft bodies 17 can be engaged. Therefore, even if the shape of the support 16a is not a rectangular plate, the attachment 15 can be supported in a state where it does not rotate and does not move laterally.

  (6) In the above embodiment, since the supported portion 26 of the round bar-like body of the actuator 20 is rotatably supported by the engagement hole 14b of the support portion 14 formed in the support frame 10, the action of the toggle mechanism 50 is achieved. Even if the point moves and a rotational force acts on the supported portion 26, the actuator 20 can operate smoothly. Further, since the two supported portions 26 are provided on both sides of the front end side block 28 of the actuator 20 so as to be opposite to each other, one of them is used as the supported portion 26 literally supported by the support hole 19a. The other supported portion 26 can be used as a handle for an operator to grasp. Further, in addition to being used as a supported portion or a handle, when the mounting position of the actuator 20 is switched between left and right, the supported portion supported by the support hole 19a is reversed by turning the actuator 20 up and down in FIG. 26 can be alternated.

(Example of change)
In addition, you may change the said both embodiment as follows.
In the above embodiment, two shaft bodies 17 are formed on the support bodies 16a at both ends of the attachment 15, respectively, but one shaft body 17 may be provided for each support body 16a. At that time, in order to allow the attachment 15 to be shared with the support portions 14 of the left and right side plates 12a of the support frame 10, the position of the engagement hole 14b in the engagement plate body 14a is set at the center of the engagement plate body 14a. Form.
In the above embodiment, the engagement hole 14b is formed at one place of each of the pair of engagement plate bodies 14a forming the support portion 14, but the engagement hole 14b may be formed at two places. Then, the two shaft bodies 17 formed on the support bodies 16a at both ends of the attachment 15 are engaged with the two engagement holes 14b of the pair of engagement plate bodies 14a, so that the attachment 15 is supported by the support section. 14 is supported in a state that neither rotates nor moves laterally. Therefore, the support 16a does not necessarily have to be a square plate.
In the above embodiment, the hydraulic cylinder 24 is used as the actuator 20, but actuators of other configurations such as a hydraulic cylinder and a pneumatic cylinder can be used according to the scale of the molten metal container.
In the above embodiment, the pair of engaging plate bodies 14a forming the support portion 14 is formed on the support frame 10, but this is formed on the opening / closing metal frame 37, and the support frame 10 has a hole through which the engagement plate body 14a passes. It may be an open structure.

(Other technical ideas)
An example of the technical idea grasped from the embodiment is as follows.
In the surface pressure applying device of the sliding nozzle device using a toggle mechanism that can add a surface pressure to the slide plate while providing a slide plate that opens and closes the outlet of the molten metal container,
An actuator having a joint for connecting to the toggle mechanism at the tip of the telescopic rod, and an attachment to be a sliding nozzle device;
The attachment has a shaft body fixed to one surface of the main body of the attachment, and a bearing portion fixed to the other surface of the main body of the attachment and having an axis parallel to the shaft body. The supported portion of the actuator is rotatably supported,
The molten metal container is provided with a support portion that can removably support the actuator, and a joint at the tip of the telescopic rod of the actuator is coupled to the toggle mechanism in a state where the actuator is supported by the support portion. Sliding nozzle device.

The perspective view which shows the relationship between the support frame, attachment, and actuator of embodiment of this invention. The perspective view which shows the support frame of embodiment of this invention. The perspective view which shows the attachment of embodiment of this invention. (A) is a top view of the actuator of the embodiment of the present invention, (b) is a front view of the actuator. The partial cross section figure which shows the state at the time of surface pressure cancellation | release in the surface pressure addition apparatus using the toggle mechanism of embodiment of this invention. The partial cross section figure which similarly shows the state at the time of surface pressure load.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Support frame, 11 ... Board | substrate, 12a, 12b ... Side plate, 14 ... Support part, 14a ... Engagement plate body, 14b ... Engagement hole, 15 ... Attachment, 16 ... Main body, 16a ... Supporting body, 17 ... Shaft body, DESCRIPTION OF SYMBOLS 18 ... Plate-shaped body, 19 ... Hollow cylinder, 19a ... Support hole, 20 ... Actuator, 22a ... Fitting shaft, 23 ... Joint, 26 ... Supported part, 27 ... Telescopic rod, 28 ... Tip side block, 30 ... Sliding nozzle device, 34 ... Tap opening, 36 ... Slide plate, 37 ... Opening / closing metal frame, 42 ... Pressing member, 44 ... Fitting hole, 50 ... Toggle mechanism

Claims (5)

In the surface pressure applying device of the sliding nozzle device using a toggle mechanism that can add a surface pressure to the slide plate while providing a slide plate that opens and closes the outlet of the molten metal container,
The molten metal container is provided with a support portion that can removably support an actuator provided with a telescopic rod, and a joint at the tip of the telescopic rod is connected to the toggle mechanism in a state where the actuator is supported by the support portion. A surface pressure applying device for a sliding nozzle device.   The molten metal container is provided with a support frame, the support frame is formed with a substrate and a side plate perpendicular to the substrate, and the support portion is disposed inside a corner portion between the substrate and the side plate. The surface pressure applying device for a sliding nozzle device according to claim 1, wherein the surface pressure applying device is provided. An actuator having a joint for connecting to the toggle mechanism at the tip of the telescopic rod, and an attachment to be a sliding nozzle device;
The attachment has a shaft body fixed to one surface of the attachment main body, and a support hole fixed to the other surface of the attachment main body and having an axis parallel to the shaft body. A toggle switching drive device, wherein a supported portion of the actuator is rotatably supported.   The shaft body is composed of one or two shafts, and a pair of the shaft bodies are disposed vertically, and one shaft body is disposed on the same axis as the other shaft body forming a pair. Item 4. The toggle switching drive device according to Item 3.   5. The toggle switching drive device according to claim 3, wherein the supported portion is a round bar-like body formed in a direction perpendicular to the axis of the actuator on a tip end side of the actuator.

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