JPH0318041Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a fixing device for roll segments in continuous casting equipment.

[Conventional technology]

As shown in FIGS. 5 and 6, the conventional roll segment fixing device connects the roll segment 1 and the mounting frame 2 via fastening pins 31.
Spacer 32 and two colanders 33a, 3
It was concluded by 3b.

In this fastening method, the roll segment 1 is first carried into a predetermined position on the mounting frame 2 using the guide rail 25, and the positioning ring 4 formed at the tip of the mounting leg 3 of the roll segment 1 is connected to the positioning ring 4 formed on the tip of the mounting leg 3 of the roll segment 1. The roll segment 1 is positioned by fitting into the hole 5. Next, insert the fastening pin 3 into the mounting hole 6 provided at the tip of the mounting leg 3.
1, and align the annular groove 34 formed at the tip of the fastening pin 31 with the spacer groove 7 provided in the mounting hole 6, fit the spacer 32, and connect the roll segment 1 and the fastening pin 31. do. Next, insert the bolts 33a and 33b into the bolt holes 35 drilled in the base end of the fastening pin 31,
Fix the connector 33a on the mounting frame 2 side,
The other bolt 33b is driven in with a hammer or the like to tighten the fastening pin 31, and the roll segment 1 is fastened to the mounting frame 2.

[Problems that this invention attempts to solve]

By the way, in the above-mentioned conventional technology, the tightening force of the roll segment 1 is weak because the bolt 33b is manually driven with a hammer or the like, and as shown in FIG. When installing, the roll segment 1 itself weighs 40 to 70 tons, which is a large load, and
Due to its own weight W, a large tensile force acts on the upper fixed portion. Therefore, there is a gap 3 on the joint surface of the upper fixed part.
6 occurred, and a problem occurred in the assembly accuracy of the roll segment 1.

In addition, in order to improve the positioning accuracy of the roll segment 1, the positioning hole 5 of the mounting frame 2 and the positioning ring 4 of the roll segment 1 are provided.
Although it is necessary to minimize the gap between A gap 36 was formed on the joint surface, causing problems in the assembly accuracy of the roll segment 1.

In order to make the gap 36 between the joint surfaces as small as possible, measures have been taken to loosen the fit between the positioning hole 5 and the positioning ring 4, but in that case, problems with the positional accuracy of the roll segment 1 may occur. It was happening.

Furthermore, when driving the cotter 33b, usually
In continuous casting equipment, the working space is very narrow, so it is difficult to completely drive the caster 33b. Therefore, not only did it take a long time to drive the bolter 33b, but the drive was also incomplete, and the roll segments 1 could not be fastened sufficiently.

The present invention has been made to solve the above problems, and provides a roll segment fixing device that firmly fastens the roll segment to the mounting frame surface.

[Means for solving problems]

The technical means of the present invention for solving the above problems is to insert a fastening pin into a mounting hole provided in a mounting leg of a roll segment, provide an annular groove at the tip of the fastening pin, and A spacer is fitted to connect the fastening pin and the roll segment by aligning the spacer groove formed in the mounting hole with the spacer groove formed in the mounting hole. In addition to providing a moving mechanism to enable movement, a cotter hole is drilled from near the end face of the mounting frame to the base end, and a cotter assembly consisting of two fixed cotters and a movable cotter held between the cotters is assembled. The present invention is characterized in that an insertion/removal mechanism is provided for inserting the movable cotter into the cotter hole and removing the movable cotter using the fixed cotter as a fulcrum in the cotter assembly.

[Effect]

With the structure described above, the fastening pin coupled to the roll segment first operates the moving mechanism on the mounting frame side, and uses the mounting frame as a fulcrum to pull the fastening pin, creating a gap between the roll segment and the mounting frame. Make sure that they are in close contact with each other. Next, the cotter insertion/removal mechanism is activated, the movable cotter is tightened using the fixed cotter as a fulcrum, and the mounting frame and the fastening pin are wedged together by the cotter assembly.

〔Example〕

An embodiment of the present invention will be described based on the drawings.

Fig. 1 is a partially sectional side view showing the roll segment 1 attached to the mounting frame 2, Fig. 2 is a side sectional view of the main parts of the installation shown in Fig. 1, and Fig. 3 is a longitudinal section of Fig. 2. It is a front view.

The roll segment 1 has a positioning ring 4 formed at the tip of its mounting leg 3, and a mounting frame 2.
The roll segment 1 is positioned by being fitted into a positioning hole 5 provided in the roll segment 1.

Reference numeral 8 designates a fastening pin, which has an annular groove 9 formed at its tip end on the roll segment 1 side, and inserts the tip end side into a mounting hole 6 provided in the mounting leg section 3 to connect the annular groove 9 and the mounting hole 6. The spacer 10 is fitted so that the spacer groove 7 provided therein coincides with the spacer groove 7 provided therein, and the roll segment 1 and the fastening pin 8 are coupled. The spacer 10 has a horseshoe shape and can be inserted into and removed from the spacer groove 7 in the lateral direction by means of a support shaft 11.

The base end side of the fastening pin 8 passes through the mounting hole 12 of the mounting frame 2 and has a moving mechanism 13 at its base end.
is installed. In the moving mechanism 13, a cross beam 14 is fastened to the base end of a fastening pin 8 by a nut 15, and a jack 16 such as a hydraulic or screw mechanism is provided between the cross beam 14 and the mounting frame 2. , the fastening pin 8 is movable in its axial direction using the mounting frame 2 as a fulcrum.

Furthermore, an insertion/removal mechanism 17 is provided between the fastening pin 8 and the mounting frame 2. This is provided with an elongated cotter hole 18 extending from the vicinity of the end face to the base end of the attachment frame 2 for the fastening pin 8, and this cotter hole 18 consists of fixed cotters 19a and 19b and a movable cotter 19c held between the fixed cotters 19a and 19b. Cotter assembly 19 is inserted. A U-shaped metal fitting 20 is attached across the fixed cotters 19a and 19b, and a jack 21 such as a hydraulic or screw mechanism is provided between this metal fitting 20 and the movable cotter 19c.
The movable lever 19c is moved in the lateral direction using the fulcrum 19b to be inserted and removed, and the mounting frame 2 and the fastening pin 8 are wedged together.

Incidentally, reference numeral 22 is an engagement pin for locking the fixed connectors 19a, 19b to the fastening pin 8.

Next, a method for attaching and detaching the roll segment 1 using this fixing device will be explained based on FIG. 4.

First, the roll segment 1 is carried into a predetermined position on the mounting frame 2 by the guide rail 25, and the fourth
As shown in Figure A, the positioning ring 4 is fitted into the positioning hole 5, and the tip of the fastening pin 8, which has already been temporarily attached to the mounting frame 2, is inserted into the mounting hole 6, as shown in Figure 4B. , align the annular groove 9 and the spacer groove 7 to form the spacer 1.
0 from the lateral direction to connect the roll segment 1 and the fastening pin 8. Installation angle θ of roll segment 1 with respect to the horizontal plane in continuous casting equipment
As shown in Figure 1, installation is usually done at an angle of 15° to 90°.

Next, when the moving mechanism 13 moves the fastening pin 8 toward the base end, the roll segment 1 is similarly pulled toward the base end through the spacer 10, and the joint surface between the roll segment 1 and the mounting frame 2 is In close contact. Further, as shown in FIG. 4(C), the connector 19 is moved so as to eliminate the gap X between it and the mounting frame 2 by the connector insertion/removal mechanism 17.
c, and the mounting frame 2 and the fastening pin 8 are firmly wedged together by the bolt assembly 17.

In addition, for roll segment 1 where the installation angle θ of the roll segment is located around 90°,
The fastening pin 8 may be wedged using only the cotter assembly 17 without using the moving mechanism 13.

As described above, the roll segment 1 and the mounting frame 2 are connected by the mover assembly 17 provided with the moving mechanism 13 and the insertion/removal mechanism 17.
It can be tightly fastened without creating any gaps.

In addition, when removing the roll segment 1 from the mounting frame 2, in the reverse procedure to the above, loosen the moving roller 19c using the roller insertion/removal mechanism 17 to create a gap X between it and the mounting frame 2, and then use the moving mechanism 13. When the fastening pin 8 is pushed up, a gap Y is created between the edge of the annular groove 9 and the spacer 10 as shown in FIG. 4(B), so the spacer 10 can be easily pulled out from the spacer groove 7. Subsequently, the roll segment 1 can be removed from the mounting frame 2.

[Effect of idea]

As explained above, the present invention is designed to fasten using a moving mechanism that allows the fastening pin to move in the axial direction, and a cotter assembly that is further equipped with an insertion/removal mechanism. have an effect.

(a) The movement mechanism of the fastening pin allows the roll segment to be tightly and tightly attached to the inclined mounting frame surface without any gaps, so the assembly accuracy of the roll segment is greatly improved.

(b) Since the roll segment can be tightly attached to the inclined mounting frame surface, the force required for driving the bolt is small, and the work of fastening the roll segment can be done easily and in a short time.

(c) The positioning hole of the mounting frame and the positioning ring of the roll segment can be tightly fitted, and the positioning accuracy of the roll segment can be greatly improved.

(d) The movable screwdriver insertion/removal mechanism can automate the screwdriver driving work and does not require human labor.
Fastening can be performed even in narrow spaces, and roll segments can be firmly fastened to the mounting frame in a short time.

[Brief explanation of drawings]

Figures 1 to 4 show one embodiment of the present invention, with Figure 1 being a partially sectional side view showing the roll segment attached to the mounting frame, and Figure 2 showing the installation steps of Figure 1. Figure 3 is a side sectional view of the
4(A) to 4(C) are side sectional views illustrating the procedure for attaching and detaching the roll segment, FIGS. 5 and 6 are conventional examples, and FIG. 5 shows the roll segment. FIG. 6 is a partially cross-sectional side view showing the state of attachment to the attachment frame, and FIG. 6 is a longitudinal sectional view of the main attachment portion B--B in FIG. 5. DESCRIPTION OF SYMBOLS 1...Roll segment, 2...Mounting frame, 3...Mounting leg, 6, 12...Mounting hole, 7...
... Spacer groove, 8 ... Fastening pin, 9 ... Annular groove, 10 ... Spacer, 13 ... Movement mechanism, 1
6, 21... Jacket, 17... Insertion/removal mechanism, 18
...Kotter hole, 19...Kotter assembly, 19a, 19b...Fixed pointer, 19c...
…Moving Kotter.

Claims (1)

[Scope of utility model registration request] A fastening pin is inserted into the mounting hole provided in the mounting leg of the roll segment, an annular groove is provided at the tip of the fastening pin, and the annular groove is aligned with a spacer groove formed in the mounting hole to connect the fastening pin. A spacer is fitted to connect the roll segment, and a moving mechanism is provided at the base end of the fastening pin to allow the fastening pin to move in the axial direction using the roll segment mounting frame as a fulcrum. A cotter hole is drilled toward the base end, and a cotter assembly consisting of two fixed cotters and a movable cotter held by the cotters is inserted into the cotter hole, and the cotter assembly has a A roll segment fixing device for continuous casting equipment, characterized by being provided with an insertion/removal mechanism for inserting and removing a movable caster using a fixed caster as a fulcrum.