JPH0773729B2 - Rolling mill - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a rolling mill, which is movable in the roll axis direction of one of an operating side housing and a driving side housing.
The present invention relates to a rolling mill suitable for preventing vibration of the housings in the roll axis direction.

[Conventional technology]

A conventional rolling mill in which one of the operating side housing and the driving side housing can be moved in the roll axis direction is disclosed in Japanese Patent Publication No. 31-
As described in No. 3510, the other fixed side housing was connected to the housing shoe on the concrete foundation only at its lower part.

[Problems to be solved by the invention]

However, this type of rolling mill has a structure in which the upper parts of the two housings are open and is weak against vibration in the roll axis direction. On the other hand, in the conventional rolling mill, only the lower part of the stationary housing is fixed. The structure does not take into consideration the point of reducing vibration in the roll axis direction during rolling. Therefore, in this conventional rolling mill, there is a problem that the rolling operation becomes unstable due to vibration of the housing in the axial direction of the roll due to rolling pressure, rolling torque, tension, etc. that occur during rolling, and the rolling quality deteriorates.

Therefore, an object of the present invention is to provide a structure capable of preventing vibration of the housing in the roll axis direction in the rolling mill of the above type.

[Means for solving problems]

The above object is to connect the upper part of the fixed-side housing to the concrete foundation in the vertical plane including the roll axis direction and through the first and second pillar means provided on the inlet side and the outlet side of the rolling mill, respectively. Then, the fixed side housing is fixed to the concrete foundation even at the upper part, and the operation side housing and the drive side housing are in the vertical plane including the roll axial direction and corresponding to the first and second pillar means. It is achieved by a rolling mill characterized in that it is connected and held by a tension bar provided on the input side and the output side.

[Action]

The fixed-side housing is fixed to the concrete foundation at the upper and lower parts thereof, and thus has a structure that is strong against vibration in the roll axis direction. Since the movable-side housing is firmly fixed to the fixed-side housing by the tension bar as usual, the movable-side housing similarly has a strong structure against vibration in the roll axis direction.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 10.

FIG. 1 shows the whole rolling mill of the present invention in the state of sheet steel rolling, in which 1 and 2 are housings, and a roll 3 for rolling sheet steel is mounted between the housings 1 and 2. ing. One housing 1 is on the side where the operator approaches the rolling mill,
The other housing is on the side where the roll 3 is connected to the drive motor (not shown) via the drive shaft 4, and the other housing is called the drive housing.

The interval between the housings 1 and 2 is set to an interval suitable for the roll 3 for rolling the plate steel. As the roll 3, specifically, rolling such as I-shaped steel, L-shaped steel, flat steel and plate rolling is performed. There are double rolls. On the other hand, when rolling the H-section steel, the roll 3 is converted into a horizontal roll 50 and a V-roll 51 for rolling the H-section steel, as shown in FIG. The gap is narrower than in the case of the roll 3 for sheet steel rolling. The method of exchanging rolls will be described later in detail.

As shown in FIG. 3, the operation-side housing 1 is mounted via movable means 10 on housing shoes 8 and 9 whose lower portions are fixed to a concrete foundation 5 by bolts 6 and nuts 7, respectively, and fixed means. It is fixed by 11. The movable means 10 includes a hydraulic cylinder 12 attached to the operation side housing 1 and a wheel 13 attached to the tip of the hydraulic cylinder 12, and the hydraulic cylinder 12 moves the wheel 13 forward and backward to move the housing shoe 8, 9 in the extended position. The operation side housing 1 is movable in the roll axis direction by engaging with the upper surface.
The fixing means 11 is a hydraulic cylinder 14 attached to the operation side housing 1, and a block 1 having an inclined surface which is attached to the tip of the hydraulic cylinder 14 and which can be engaged with the inclined surfaces of the housing shoes 8 and 9.
5, the hydraulic cylinder 14 presses the sloped surface of the block 15 against the sloped surfaces of the housing shoes 8 and 9 to fix the operation-side housing 1 at a desired position.

As shown in FIG. 4, the drive-side housing 2 has housing blocks 8 and 9 whose lower portions are fixed to the concrete foundation 5.
It is fixed by bolts 16 and nuts 17.

Further, a motor base 18 is mounted on the upper part of the drive side housing 2, and on the motor base 18, as shown in FIG. 5, a motor 21 for driving the rolling down devices 19, 20 for rolling down the roll 3 and H. A motor 24 for driving the rolling-down devices 22, 23 (see FIGS. 1 and 2) for rolling down the V roll 51 shown in FIG.

The motor base 18 is connected to the concrete foundation 5 via vertical pillars 25 and 26 at the tip portion thereof, so that the drive-side housing 2 also has the concrete foundation 5 at its upper portion.
It is fixed to.

The pillars 25, 26 are connected at their lower ends to the concrete foundation 5 by bolts 60, 61 and nuts 62, 63, respectively, and at their upper ends are connected to the motor base 18 by bolts 64, 65, respectively.

The rolling down devices 22 and 23 for rolling down the V roll 51 are installed on the openable and closable yokes 27 and 28, respectively, as shown in FIG. 6, and when the roll 3 is mounted and sheet steel rolling is performed, The side yoke 28 of the drive side housing 2 is placed in an open state.

The operation-side housing 1 also has four
The tensioners 29, 30, 31, 32 of the book are combined and held in the drive side housing 2. As shown in FIG. 7, each of the tensioners 29 to 32 has a nut on the operation side housing 1.
It is fixed by 33 and is detachably attached to the drive side housing 2 by a U-shaped frame 34 attached to the housing 2, and a hydraulic cylinder 35 and a spacer 36 attached to the frame 34. As shown in FIG. 5 and FIG. 6, the tension bars 29, 31 located above and below
Includes a vertical column 25 and a part of the motor base 18, and this plane is a plane including the axial direction of the roll. Further, the plane including the tension bars 30 and 32 located above and below includes the vertical column 26 and a part of the motor base 18, and this plane is a plane including the axial direction of the roll. Therefore, the rigidity in the roll axis direction is increased. In the hydraulic cylinder 35, the piston block 35a is press-engaged with the end surface of the spacer 36 at the advanced position, and the enlarged diameter end 29a of the tension bar 29 is engaged and held with the drive-side housing 2 via the spacer 36. The spacer 36 is the eighth
As shown in the figure, it is a split type that can be opened and closed by using a pin 37 attached to the frame 34 as a fulcrum, and a lever 39 that can rotate about a pin 38 attached to the frame 34 as a fulcrum, respectively.
Is pivotally coupled to a pin 40 mounted on the tip of the.
A hydraulic cylinder 41 is connected to the lower end of the lever 39 via a pin 42 and a block 43. By expanding and contracting the hydraulic cylinder 41, the lever 39 rotates about the pin 38 as a fulcrum, and the spacer 36 opens and closes. There is.

A base 46 is fixed to the concrete foundation 5 by bolts 44 and nuts 45, and a hydraulic cylinder 47 for moving the operation side housing 1 is mounted on the base 46.

A pillar 25 connecting the motor base 18 and the concrete foundation 5
An air cooling duct 48 for cooling the drive motor 21 of the reduction devices 19, 20 is formed inside, and a guide 53 through which a pipe 49 of a hydraulic device including the motor 21 passes is formed inside the pillar 26. There is.

Reference numerals 54 and 55 are lower side rolling down devices.

Exchange of rolls for rolling H-section steel is performed as follows. In order to incorporate the horizontal roll 50 and the V roll 51 (see FIG. 2) used for rolling the H-section steel, the spaces between the housings 1 and 2 must be narrowed as described above. For this purpose, first, the roll 3 is pulled out, and then the solenoid valve (not shown) is switched to retract the hydraulic cylinder 35 for holding the tension bars 29 to 32 shown in FIG.
And the pressing engagement between the end surface of the spacer 36 and the spacer 36 is released. Next, as shown in FIG. 9, the hydraulic cylinder 41 is contracted to open the spacer 36, and the expanded diameter end portions 29a to 29a of the tension bars 29 to 32 are opened.
Release the restraint of 2a. Next, the block 15 is retracted by the hydraulic cylinder 14 shown in FIG. 3, the engagement of the inclined surface is released, the hydraulic cylinder 12 is extended, and the company logo 13 is pressed into the housing shoe 8, 9 while operating side housing Float 1 from housing 8.9. As a result, the operation-side housing 1 becomes movable on the housing shoes 8 and 9. Then, by operating the hydraulic cylinder 47 shown in FIG. 1,
The operation side housing 1 is moved to the position shown in FIG.
Next, the hydraulic cylinder 12 is contracted to lower the operating side housing 1, the wheel 13 is retracted and placed on the housing shoes 8 and 9 again, and the hydraulic cylinder 14 is extended to bring the sloped surface of the block 15 into the housing shoe 8. The operating side housing 1 is fixed again on the housing shoes 8 and 9 by pressing against the sloped surface of 9.

Next, the hydraulic cylinder 41 shown in FIG.
Closed and extend the hydraulic cylinder 35 to extend the piston block 35.
a is pressed into engagement with the end faces of the expanded diameter end portions 29a to 32a of the tension bars 29 to 32. This state is shown in FIG. As a result, the operating-side housing 1 has tension bars 29 to 32.
It is fixed to the drive side housing 2 via.

Next, a horizontal roll 50 and a V roll 51 for H-shaped steel rolling are incorporated, and both yokes 27, 28 including the yoke 28 that has been opened as shown in FIG. 6 are closed. As a result, the H-section steel is rolled into the state shown in FIG.

When the rolling mill is driven to perform rolling, the drive-side housing 2 which is the fixed side, and the housing shoe 8, 9
Since it is connected to the concrete foundation 5 via the motor base 18, and is also connected to the concrete base 5 via the motor base 18 and the pillars 25 and 26 in the upper part, it is firmly fixed to the concrete foundation 5 and is resistant to vibration in the roll axis direction. On the other hand, the operation side housing 2 has a strong structure and is a moving side.
Is held on the drive side housing 2 by the tension bars 29 to 32, it is similarly firmly fixed to the concrete foundation 5 and has a strong structure against vibration in the roll axis direction. Therefore, there is no vibration in the axial direction of the roll due to the rolling force of the rolling, the rotation of the roll, etc., the rolling quality can be improved, and a product with high accuracy can be produced.

Further, since the vibration in the roll axis direction can be prevented, the rolling speed can be increased and the production amount can be increased. Furthermore, the life of the machine can be extended and the frequency of maintenance and inspection can be reduced. In addition, in this type of machine with a lot of vibration in the roll axis direction, the hose connection for piping is easily entangled, which may cause a fire.However, by preventing vibration in the roll axis direction, such an accident may occur. There is an effect that can be prevented.

Further, in the present embodiment, since the pillars 25 and 26 also serve as the air-cooling duct 48 for cooling the motor and the guide 53 through which the piping is passed, the space can be effectively used and the cost by adding the pillars can be reduced. be able to. Further, by hiding the air-cooling duct 48 and the pipe 49 in the pillar, it is possible to reduce the occurrence of accidents such as breakage of these ducts and pipes, and it is possible to further improve the appearance.

Although the pillars 25 and 26 are directly fixed to the concrete foundation 5 in the above-mentioned embodiments, these pillars may be fixed to the concrete foundation 5 if there is an appropriate mount. Further, the pillars 25 and 26 are formed as members separate from the motor base 18, but they may be formed as an integral member with the motor base 18 if necessary. Pillar 25,26 in short
Need only have a structure in which the upper end of the drive housing 2 can be connected and fixed to the concrete foundation 5, and various modifications are possible within this range.

〔The invention's effect〕

As is apparent from the above, according to the rolling mill of the present invention, since it is possible to realize a structure that is strong against vibration in the roll axis direction, it is possible to prevent vibration in the roll axis direction during rolling, and thereby, The quality of the machine can be improved, the productivity can be expanded, the life of the machine can be extended, the frequency of maintenance and inspections can be reduced, and high safety can be secured. is there.

[Brief description of drawings]

FIG. 1 is an overall side view showing a rolling mill according to an embodiment of the present invention in which a roll for rolling a plate, L-shaped steel, flat steel rolling or the like is mounted, and FIG. 2 shows the rolling mill. FIG. 3 is a similar overall side view showing a case of rolling H-shaped steel, FIG. 3 is a sectional view taken along line III-III in FIG. 1, and FIG. 4 is line IV-IV in FIG. Is a cross-sectional view along
5 is a plan view of the rolling mill shown in FIG. 1 seen from above, and FIG. 6 is a cross-sectional view taken along line VI-VI of FIG.
7 is a sectional view taken along line VII-VII of FIG. 1, FIG. 8 is a sectional view taken along line VIII-VIII of FIG. 1, and FIG. 9 is a spacer shown in FIG. FIG. 10 is a cross-sectional view showing a state in which is opened, and FIG. 10 is a cross-sectional view taken along the line XX of FIG. Explanation of symbols 1 …… Operating side housing 2 …… Drive side housing 5 …… Concrete foundation 8,9 …… Housing shoe 18 …… Motor base 25,26 …… Column (column means) 48 …… Air cooling duct, 49 …… Piping 53 …… Information

Claims (4)

[Claims] 1. A rolling mill in which one of an operation-side housing and a drive-side housing is movable in a roll axis direction, and the other is fixed to a concrete foundation at a lower part thereof to form a fixed-side housing, wherein an upper part of the fixed-side housing is In the vertical plane including the roll axis direction, and further, by connecting the concrete foundation through the first and second pillar means respectively provided on the inlet side and the outlet side of the rolling mill, the fixed side housing is connected to the upper part. However, while being fixed to the concrete foundation, the operation-side housing and the drive-side housing are placed in a vertical plane including the roll axis direction and corresponding to the first and second column means of the rolling mill. A rolling mill characterized by being held together by means of tension bars provided on the side and the outlet side. 2. The column means is at least one vertical column which connects a motor base mounted on the upper part of the fixed housing and the concrete foundation. Rolling machine according to item. 3. The rolling mill according to claim 1, wherein the pillar means also serves as an air cooling duct for cooling the motor for driving the rolling-down device. 4. The rolling mill according to claim 1, wherein the pillar means also serves as a guide for passing piping of hydraulic equipment.