JPS6350006Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a double roll support device for mounting relatively heavy rolls such as rolling rolls at intervals in the vertical direction and with at least one shaft end aligned. It is something.

Generally, the surface of the roll of a metal rolling mill is worn out due to use, and sometimes it is necessary to resurface the surface by turning or polishing to remove scratches that occur.
When replacing rolling mill rolls, especially work rolls, during repair, it is necessary to take out the work roll from the rolling mill housing and then remove the chock fitted to the work roll shaft or fit it onto a new roll. be. Many studies have been conducted to make this work roll chock exchange more efficient and reduce crane work and manual labor as much as possible, as well as eliminate dangerous work.
−46910, Special Publication No. 52-47414, or Special Publication No. 1973-
Announcements have been made in Publication No. 11271, etc. However, there remain many problems in attaching and detaching the chock while these work rolls, which have a large weight and have precise fitting precision in the bearings, are placed above and below. The rolls mounted on the roll support stand disposed in the middle must be held with their axial ends aligned so that they do not shift in the axial direction.

However, these chock exchange devices do not allow the chock to be exchanged while keeping the upper and lower rolls in the same vertical position as they are in the rolling mill, and each chock exchange requires assembling the chock up and down, which requires long crane work. need.

As a means to solve these problems, a device for exchanging roll jocks in an arrangement of upper and lower rolls that can be incorporated into a rolling mill has been disclosed, for example, in Japanese Utility Model Publication No. 54-21549.

However, in these chock changing devices, the upper and lower rolls are respectively clamped by clamping devices from the lateral direction, and the chock is then removed or fitted. Therefore, in these devices, the upper and lower rolls placed on the roll support device must be accurately positioned in advance, which requires complicated and skilled work, and requires a complicated position adjustment mechanism. Attachment is required.

This invention solves the above problems,
The object of this invention is to provide a double roll support device for exchanging roll jocks that is easy to handle and has an extremely simple structure. The device of the present invention will be described in detail below with reference to all the drawings. Reference numeral 1 denotes a support base for the lower roll, which is installed on a base 3 via a cylinder device or other suitable elevating device 2. Reference numeral 4 denotes a lower roll holding base which is slidably provided on the lower roll support base 1 in the axial direction of the loaded roll via a slide device 5, and on its upper surface, the lower roll to be placed is placed on the lower roll holding base 4. A lower roll body receiving portion 6 is provided for abutting and holding the peripheral surface. Reference numeral 7 denotes a buffer plate stretched over the surface of the lower roll body receiving portion 6, and is generally made of an elastic material such as rubber or nylon.

The slide device 5 is configured to slide the lower roll holding base 4 on the lower roll support base 1 in the axial direction of the lower roll mounted thereon. Rolling elements 11 such as balls or rollers are inserted into grooves 9 and 10 formed in slide guide plates 8 and 8', respectively, provided at opposite positions on the upper surface of the support base 1 and the lower surface of the lower roll holding base 4. Insert and place. In addition to the above-described slide device 5, a rail guide (not shown) running in the axial direction of the lower roll may be provided so that the lower roll support 1 can freely slide on the rail. It is possible. Reference numeral 12 denotes a rolling guide provided on one side of the groove in which the rolling element 11 is inserted. Reference numeral 13 denotes a lifting platform, which is installed on the base 3 via a cylinder device or other suitable lifting device 14. The elevating table 13 has an elevating support portion of the lower roll support 1 inserted therethrough at its intermediate portion, independently of the elevating table 13. In the above description, the lower roll support base 1 and the lifting table 13 are illustrated as having separate operation structures, but the present invention is not limited to this, and the lower roll support table 1 and the lifting table 13 may be integrated. In this case, the distance between the upper and lower rolls is fixed. Reference numeral 15 denotes supporting legs, which are provided on both sides of the lower roll holding table 4. Reference numeral 16 denotes an upper roll support arm having an upper roll body receiving part 17 at the tip of the arm bent in an L shape, and a set lever 18 for opening and closing the upper roll support arm 16 is integrally connected to the other end. There is. The upper roll support arm 16 is attached to the head of the support leg 15 at its bent portion by a shaft 19 so as to be movable up and down.

The above-mentioned upper roll support arm 16 is attached to the lower roll R _L held by the lower roll body receiving part 6.
It is preferable that an average spacing position, such as the spacing between the upper roll and the lower roll determined by the chock to be attached to the roll shaft, be obtained depending on the position of the roll shaft.

20 is an arm hardware 21 whose one end is attached to the support leg 15
The other end is attached to the upper roll support arm 16.
A device for opening an upper roll support arm coupled to the rear surface of a tip end of a cylinder device, for example, a cylinder device,
A tension spring or the like is used, but the supporting leg 15 is also used.
In order to prevent the rolls from entering and exiting on the inner surface of the upper roll support arm 16, the upper roll support arm 16 may be provided with a means such as a pressure spring so that the upper roll support arm 16 is always erected and released when no rolls are stored. . In addition to the above example, an extension arm is provided in the direction of the bending part of the set lever 18,
It is also possible to attach a weight to this so that the upper roll support arm can be opened and raised.

The surface of the upper roll body receiving part 17 and the set lever 1
It is preferable to attach an elastic material such as rubber or nylon to the roll contacting portion at the tip of the roll 8 in order to prevent damage to the roll surface when the roll is in contact with the roll.

Although the apparatus of the present invention is constructed as described above, the operation thereof will be described in detail below when the apparatus of the present invention is applied to attaching chock to a work roll of a rolling mill.

That is, the lower roll holding table 4 and the lower roll holding table 4 are adjusted so that the axial spacing between the two upper and lower rolls to be accommodated in the device of the present invention, for example, the axial spacing of a work roll incorporated into a rolling mill, is arbitrarily determined in advance. Lifting platform 1
3 by the respective lifting devices 2 and 14,
The respective lower roll body receiving portions 6 and upper roll body receiving portions 17 are placed in predetermined positions. In this state, as described above, when no rolls are accommodated, the upper roll support arm 16 is erected and opened by the opening actuating device, for example, the pulling body 20. Next, when the rolls that have been ground and repaired are stored one by one from the lower roll R _L or the upper and lower rolls R _L and R _U are simultaneously stored in the roll receiving part by an appropriate cargo handling means such as a crane, the rolls are stored first. The body of the lower roll R _L presses down the set lever 18 of the upper roll support arm 16. At this time, as the lower roll R _L descends, the set lever 18 is also pushed down and the upper roll support arm 1
6 is rotated inwardly against the pulling body 20, and the upper roll body receiving portion 17 is brought to a predetermined holding position of the upper roll R _U. The upper roll R _U that is then accommodated is held in a predetermined position by the upper roll body receiving portion 17 .

The operating mechanism of the opening actuating device is that when the roll is coming down, if the upper roll support arm 16 closes too early or too late, the upper roll will close.
In order to prevent the lower roll R _L from being scratched at the lower end of the upper roll support arm 16 when raising the roll, it is necessary to use a mechanism that follows the movement of _the roll flexibly. desirable.

The two upper and lower rolls housed and mounted as described above press the lower roll R _L in its axial direction, thereby causing the rolling device such as the ball or roller of the slide device 5 or the lubricating slide to Due to the action of the moving device, the lower roll R _L can be moved extremely easily with a small pressing force and its position in the axial direction can be adjusted.

For example, when installing chock from both sides on roll shafts housed at a predetermined distance above and below for chock mounting, axial misalignment of the rolls is extremely easily prevented by the normal fitting force used when installing chock. , and can be automatically resolved at the same time. That is, in the device of the present invention, the shaft ends of the upper and lower rolls placed thereon do not need to be brought into exact alignment using a crane or the like, and some misalignment due to the crane is allowed within the sliding range of the slide device. Further, when the vertical position of the placed rolls needs to be adjusted, the respective roll holders are adjusted up and down.

Since the device of the present invention is as described above, it is possible to store and place two rolls side by side vertically and without any deviation in the axial and lateral directions. It is a safe and useful device that does not require exclusive use of equipment, can shorten the time required for dangerous heavy cargo handling work, and can significantly improve the efficiency of roll chock replacement work, for example.

In the above description of the device of the present invention, a double roll support device was described for chock exchange of work rolls in a rolling mill. However, the use of the device of the present invention is not limited to the above example, but can also be used when the rolls are placed with their axial directions aligned. It can be used for necessary roll storage, etc. within the scope of the purpose of the present invention.

[Brief explanation of the drawing]

1 is a front view of the device of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a front view of the slide device section, and FIG. 4 is a sectional view taken along the line A-A in FIG. 3. In the figure, 1...Lower roll support stand, 4...Lower roll support stand, 5...Slide device, 6...Lower roll body holder, 8, 8'...Slide guide plate, 11...
Rolling element, 13... Lifting table, 15... Support leg, 16...
...Top roll support arm, 18...Set lever.

Claims (1)

[Scope of utility model registration request] A lifting platform is provided with a pair of left and right supporting legs, and is supported so as to be vertically movable via a lifting device, and a vertically movable lifting platform is supported on each of the supporting legs, and is attached to the tip of an arm bent in an L-shape. an upper roll support arm formed with a roll body receiving portion and a set lever at the other end; an opening actuator for returning the upper roll support arm to its upright position when the roll is not stored; A double roll support device consisting of a lower roll support stand provided independently of the lifting platform, and a lower roll holding stand having a lower roll body receiving part whose position can be adjusted in the axial direction of the loaded roll via a slide device. .