JPS628419Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a guide device for guiding a movable body such as a lifting frame provided for lifting and lowering an electrode joint device of an electric furnace, etc. In a device that clamps and guides a movable body such as an elevating frame with guide rollers rotatably provided on a fixed body such as a fixed frame while having a predetermined guide gap therebetween, the gap between the guide gaps can be adjusted steplessly as desired. The present invention relates to a guide device for a movable body, which can adjust the gap to a distance of 1,000,000,000 yen, and improves the workability of adjusting the guide gap.

[Conventional technology]

Generally, an electric furnace method using an electric furnace is known as a method for producing iron ore and the like. As shown in Fig. 1, the electric furnace used in this electric furnace method includes a furnace 1 for melting iron ore, etc., a furnace lid 2 that covers the furnace from above, and an electrode charging port 3 formed in the furnace lid 2. It is mainly constituted by an electrode 4 which is removably installed in the electrode 4. This electrode 4 is supported by an electrode joint device 6 attached to an arm 5, and this arm 5
One end portion is rotatably supported by a frame 7 fixed to a base. This frame 7 is mainly composed of an elevating frame (moving body) 8 that moves up and down to insert and remove the electrode 4, and a fixed frame (fixed body) 9 that supports this frame, and includes a hydraulic cylinder (not shown). ) to move up and down.

Incidentally, this frame 7 is provided with a fixed frame in order to prevent the elevating frame 8 from shaking laterally and making it impossible to insert the electrode 4 into the electrode insertion opening 3 of the furnace cover 2 when the elevating frame 8 is moved up and down. A moving device 11 is attached to the (fixed body) 9 to sandwich the elevating frame (movable body) 8 between guide rollers 10, 10 which are rotatably provided, and to guide the elevating movement.

As shown in FIGS. 2 and 3, this guide device 11 is mainly composed of a guide roller 10 and a fixed plate 12 that supports the guide roller 10 on a fixed frame (fixed body) 9.

Specifically, the guide roller 10 is supported via a bearing 14 fitted eccentrically to a shaft 13, and by adjusting the rotation of the shaft 13, the center of rotation of the guide roller 10 is set to the eccentric center. It is configured to be able to move in the direction of the arrow 15 by an amount l.
Both ends of this shaft 13 are rotatably supported by two fixed plates 12, 12 extending perpendicularly to this shaft 13 from the fixed frame 9, and are supported by one of these fixed plates 12. is disk 16, which will be described later.
Bolt hole 17 for integrally fixing the bolt with...
... (four locations in the illustrated example) are provided as appropriate.

Further, at one end of this shaft 13, on the side supported by the fixing plate 12 having the bolt holes 17, a disk 16 is connected via an engaging member 18.
It is integrally fixed so as to be perpendicular to the axis 13. Bolt through holes 20 are formed in the disk 16 at appropriate intervals in a substantially circular shape centered around the fixing portion 19 between the disk 16 and the shaft 13. The disk 16 and the fixing plate 12 are integrally fixed with bolts by tightening the bolts into bolt holes 17 provided in the fixing plate 12 through the bolt through holes 20 from below.

A guide having a predetermined interval is provided between the guide roller 10 of the guide device 11 configured as described above and the guide rail 22 provided on the elevating frame (moving body) 8 in order to smoothly move the elevating frame 8 up and down. A gap S is formed. By the way, this guide gap S needs to be adjusted to maintain an optimum interval at all times or as needed in order to move the elevating frame 8 smoothly.

To adjust this distance, first remove the bolts 21 that integrally fix the disk 16 and the fixed plate 12, and then gradually rotate the disk 16 in the direction of the arrow 23. Due to this rotation, the shaft 13 which was integrally fixed to the disk 16 via the engagement member 18 is simultaneously rotated, and by adjusting the rotation of this shaft 13, the center of rotation of the guide roller 10 is set to the shaft 16.
3 and the bearing 14 in the direction of the arrow 15 by an amount of eccentricity l. Along with this, the interval of the guide gap S changes, and when it reaches a predetermined interval, the rotation of the disc 16 is stopped, and the bolt 21 is inserted into the bolt through hole 20 formed in this, and the disc 16 and the fixing plate 12 are fixed with bolts. By doing so, the guide gap S was adjusted.

[Problem that the invention attempts to solve]

However, in this type of guide device 11, the bolts 21 can only be tightened at positions where the through holes 20 formed in the disk 16 and the bolt holes 17 formed in the fixing plate 12 coincide. Therefore, the interval between the guide gaps S could only be adjusted in stages. Therefore, even if the guide gap S becomes a predetermined interval, the bolt through holes 20 provided in the disk 16 may not match the bolt holes 17 provided in the fixing plate 10, and the bolts 21 may not match. This caused the inconvenience that it could not be tightened.

Furthermore, since the spacing of the guide gap S changes with a sine component as the disc 16 rotates, this gap S approaches a predetermined spacing, requiring special adjustment. Even when the disk 16 is rotated and adjusted so as to be sent in the direction 23, the distance may vary greatly, making the adjustment work very difficult.

Therefore, in order to solve the above-mentioned problems, it is conceivable to provide a large number of bolt through holes 20 in the disk 16 to make delicate adjustments easier, but in this case, the strength of the disk 16 It has not been put into practical use because it has the disadvantage of becoming weak. It is also possible to make the bolt through hole 20 a long hole along the circumference, but in this case, the disc 16 will be easier to rotate due to the rotational force of the guide roller 10, so the interval of the guide gap S will change. There is a problem with this.

The present invention was created by paying attention to the above-mentioned problems.

The purpose of this invention is to move moving objects such as lifting frames,
In a device that is provided with a predetermined guide gap and is clamped and guided by guide rollers rotatably provided on a fixed body such as a fixed frame, the gap between the guide gaps can be adjusted steplessly to a desired interval. Another object of the present invention is to provide a guide device for a movable body that can prevent the guide gap from changing without permission due to external force.

[Means for solving problems]

In order to achieve the above purpose, the present invention provides a mobile object,
In a device that is clamped and guided by guide rollers rotatably provided on a fixed body with a predetermined guide gap, the shaft is rotatably fitted with the center of the guide roller eccentric from its axis. and is integrally fixed to one end of the shaft so as to be orthogonal thereto,
a disk having a plurality of elongated holes formed in a tangential direction on the same circumference centered on the axis; a fixing plate having bolt holes facing the elongated holes and formed at appropriate intervals on the same circumference, and screwing into the bolt holes of the fixing plate from the elongated hole side to tighten and fix the disk. a bolt with a rectangular cross section that is engaged in the elongated hole in surface contact with the side wall of the elongated hole so as to be slidable along the longitudinal direction; and a head that supports the outer edge of the elongated hole. and a locking member having an insertion hole for inserting the bolt shaft of the bolt,
The shaft is rotated by adjusting the rotation of the disk, and the guide gap between the guide roller and the movable body can be adjusted to an arbitrary distance.

[Effect]

Since the bolt through holes of the disk are made into elongated holes, the disk can be fixed at any rotational position, and the interval between the guide gaps can be adjusted steplessly. However, the long hole is formed straight in the tangential direction,
Since the bolts are fastened via a locking member that makes surface contact with the elongated hole, it is possible to prevent the disk from rotating arbitrarily due to an external force such as rotation of the guide roller, and it is possible to maintain a constant interval between the guide gaps.

A preferred embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

The same parts as those in the conventional example are designated by the same reference numerals and the description thereof will be omitted.

First, as shown in FIGS. 4 and 5, lengths having a predetermined length are placed on the disk 16 opposite to each other with the fixing portion 19 integrally fixing the disk 16 and the shaft 13 integrally. Holes 24... are formed. A locking member 26 that is slidable in the longitudinal direction while contacting the inner wall 25 of the elongated hole 24 is fitted into the elongated hole 24 in order to bond and fix the disk 16 and the fixing plate 12. Specifically, as shown in FIG.
The locking member 26 includes a shaft portion 27 with a rectangular cross section that contacts the shaft portion 27 and a head portion 28 that projects from the shaft portion and supports the outer edge of the elongated hole 24.
An insertion hole 29 is formed in order to insert a bolt 21 into the bolt hole 17 formed in . This insertion hole 29 is formed to be sufficiently larger than the diameter 31 of the bolt shaft 30, so that the bolt 21 can be adjusted within a predetermined range in response to the relative displacement between the bolt hole 17 and the elongated hole 24 that occurs during the adjustment work of the guide gap S. It is configured so that it can be followed in the direction of the arrow 32.

Then, the bolt 21 is connected to the washer 33 and the locking member 2.
6 into the bolt holes 17, the disk 16 and the fixing plate 12 are reliably fixed.

Further, bolt holes 17 provided in the fixing plate 12...
... are arranged in a circular shape at appropriate intervals as shown by the dotted lines in Fig. 5, and even if the disk 16 is rotated and adjusted, one of the bolt holes 17 always faces every elongated hole 24. It is configured as follows.

A method for adjusting the guide gap in the device of the present invention constructed as described above will be described.

First, the bolts 21 connecting and fixing the fixing plate 12 and the disk 16 are loosened, and the locking member 26 fitted into the elongated hole 24 of the disk 16 is removed.
Then, the disk 16 is gradually rotated in the direction of the arrow 23 in order to adjust the interval of the guide gap S between the guide rail 22 provided on the elevating frame (moving body) 8 and the guide roller 10. Due to this rotation, the shaft 13 which was integrally fixed to the disk 16 is simultaneously rotated, and the guide roller 10 is moved in the direction of the arrow 15 by the amount of eccentricity l between the shaft 13 and the bearing 14. As a result, the interval between the guide gaps S is adjusted, and when the desired interval is reached, the rotation is stopped and the elongated hole 24
The locking member 26 is inserted along the inner wall 25 of the elongated hole 29 so that the bolt insertion hole 29 formed therein matches the bolt hole 17 formed in the fixing plate 12. and slide it in the longitudinal direction. Then, when the insertion hole 29 and the bolt hole 17 match, the bolt 21 is tightened.

At this time, the positions of the elongated hole 24 and the bolt hole 17 will be relatively shifted. That is, by rotating the disk 16, the bolt hole 17 is displaced in the longitudinal direction of the elongated hole 24 and also in the width direction thereof. In this case, the bolt insertion hole 29 formed in the locking member 26 is formed sufficiently larger than the diameter 31 of the bolt shaft 30, as shown in FIG. The tightening position of the bolt 21 is also changed in accordance with the displacement in the width direction of the hole.

Also, if the bolt hole 17 comes off from one end of the elongated hole 24 while adjusting the rotation of the disk 16,
The next bolt hole 17 appears from the other end of this elongated hole 24, and the bolt 21 is tightened together with the locking member 26 into the newly appeared bolt hole 17.

As explained above, in the conventional device, the interval of the guide gap S could only be adjusted stepwise, but in the present invention, the long hole 24 is provided in the disk 16, and when the disk 16 is rotated, the distance between the guide gaps S can be adjusted as desired. Since it is connected and fixed to the fixing plate 12 at the position,
The interval between the guide gaps S can be arbitrarily adjusted steplessly, and the adjustment work can be easily performed.

Further, in the tightened state as described above, as shown in FIG. 6, the inner wall 25 of the elongated hole 24,
Since the side wall of the shaft portion 27 of the locking member 26 is in surface contact with the inner wall 25 of the elongated hole 24, which is about to rotate around the center of the disk 16 due to the rotation of the guide roller 10, and the bolt 21 The side walls of the locking member 26 that are about to rotate as a result of the rotation are in direct contact with each other, and therefore, these disks are 16 and the fixed plate 12 can be firmly fixed, and the interval of the guide gap S can be maintained.

In the above embodiment, a frame for raising and lowering an electrode joint device used in an electric furnace has been described, but the present invention is not limited to this, and can be applied to various crane devices.

Moreover, it goes without saying that the present invention can be employed not only for guiding a movable body moving in the vertical direction, but also for guiding a movable body moving in the horizontal direction.

[Effect of idea]

In summary, according to the present invention, the following excellent effects can be achieved.

(1) Since the bolt through hole of the disk is made into a long hole,
It becomes possible to fix the disk at any rotational position, and therefore the interval of the guide gap between the guide roller and the movable body can be adjusted steplessly.

(2) The long hole is formed straight in the tangential direction, and the disk is fixed with bolts through a locking member that makes surface contact with the inner surface of the long hole, so the disk can be rotated freely by external forces such as rotation of the guide roller. Movement can be reliably prevented, and the interval between the guide gaps can therefore be maintained constant.

(3) Since the structure is simple, it can be easily adapted to existing equipment.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing a state in which a guide device for a movable body is attached to a lifting frame used in an electric furnace, Fig. 2 is a plan view showing a conventional guide device for a movable body, and Fig. 3 is in the middle of Fig. 2. 4 is a plan view showing a preferred embodiment of the present invention; FIG. 5 is a sectional view taken along line B-B in FIG. 4; and FIG. 6 is a sectional view taken along line B-B in FIG. It is an enlarged view of part C. In addition, in the figure, 8 is a lifting frame (moving body), 9 is a fixed frame (fixed body), 10 is a guide roller, 1
2 is a fixed plate, 13 is a shaft, 16 is a disk, 17 is a bolt hole, 24 is a long hole, 26 is a locking member, 29 is an insertion hole, and S is a guide gap.

Claims (1)

[Scope of utility model registration request] In a device that clamps and guides a movable body between guide rollers rotatably provided on a fixed body with a predetermined guide gap, the guide roller is rotatably fitted with the center of the guide roller being eccentric from its axis. a disk integrally fixed to one end of the shaft so as to be perpendicular thereto, and having a plurality of elongated holes formed tangentially on the same circumference centered on the axis; a fixing plate that is fixed to the fixing body to overlap the disk and fix it, and has bolt holes facing the long holes formed in the disk and formed at appropriate intervals on the same circumference; ,
A bolt is screwed into the bolt hole of the fixing plate from the elongated hole side to tighten and fix the disk, and a bolt is engaged in the elongated hole so as to be able to slide freely along the longitudinal direction in surface contact with the side wall thereof. and a locking member having a shaft portion having a rectangular cross section, a head portion supporting an outer edge portion of the elongated hole, and an insertion hole for inserting the bolt shaft of the bolt, and adjusting the rotation of the disk. A guide device for a movable body, characterized in that the guide gap between the guide roller and the movable body can be adjusted to an arbitrary distance by rotating a shaft.