RU2313436C1 - Apparatus for assembling/disassembling rolling rolls - Google Patents

Abstract

FIELD: systems for fixing in axial directions rolls with small difference of diameters of their barrel and journal.

SUBSTANCE: apparatus includes frame where supporting struts with cylindrical lodgments for roll journals are mounted. Two cars with mechanism for fixing chocks are also mounted in said frame with possibility of motion in axial direction from drive unit. Lever type grips for fixing roll in axial direction are also mounted in part of frame. Rolls are fixed in axial direction on mean portion of frame with use of lever grip mounted in each supporting strut and being in the form of two levers jointly secured to strut and having lower ends mutually coupled through hydraulic cylinder and upper ends provided with hinged heads that may abut to roll journal. Stops are mounted in strut with possibility of engaging with inner surface of said levers.

EFFECT: simplified process of assembling/disassembling rolling rolls.

3 dwg

Description

The invention relates to the field of mechanical assembly production, and more particularly to a device for mounting and dismounting pillows with bearings on a rolling rolls.

A device for mounting on rolls of pillows with bearings and their dismantling (copyright certificate SU 348328, MKI V 23 P 10/02), containing racks for placing shafts and pillows and mounted on the guides of a movable frame carrying working power cylinders, two drive trolleys with cushion lifting and clamping mechanisms and drive grips for engagement with the rods of the power cylinders, as well as drive stops mounted in vertical guides along the ends of the assembled roll.

The disadvantage of this device is that the installation of stops in rigid vertical guides requires accurate stacking of the rolls on the racks, and the fixing of the rolls with stops at the ends of its ends during installation and dismantling prevents the continuous movement of the bogies.

A device is known for mounting and dismounting pillows with bearings on rolls (copyright certificate SU 617229, MKI V 23 P 10/02), containing racks for placing shafts and pillows and mounted on guides a movable frame that carries working power cylinders, two drive trolleys with mechanisms for lifting and clamping pillows and driving grips for coupling with the rods of the power cylinders, as well as an emphasis for fixing the roll in the axial direction, mounted in the middle of the frame and made in the form of rotary symmetrically arranged levers, having the ability to interact with the ends of the roll barrel.

The disadvantage of this device is that with large regrinding of rolls, which allow modern technologies for the manufacture of rolls, the end surface of the roll barrel is reduced so much that it does not provide the dimensions necessary for coupling.

The problem solved by the invention is to enable axial fixation of the roll in its middle part with a slight difference in the diameters of the barrel and neck by directly holding the roll neck.

This problem is solved as follows.

In the known device for assembling and disassembling the rolls, containing a frame on which are mounted support posts with cylindrical tool holders under the neck of the roll and two carts with a mechanism for fixing pillows, mounted on the frame with the possibility of axial movement from the drive, as well as mounted in the middle part the lever grips for fixing the roll in the axial direction, according to the invention, the lever gripper is mounted on each support rack and made in the form of two levers pivotally mounted on the rack, lower to the ends of which are interconnected by means of a hydraulic cylinder, and the upper ones are equipped with hinged heads that can adjoin the neck of the roll, while the stops are mounted on the rack, which are placed with the possibility of contact with the inner surface of the levers.

Figure 1 shows a General view of the proposed device (side view).

In figure 2. - capture for the neck of the roll (section aa in figure 1)

Figure 3 - fastening of the lever head (section BB in figure 2)

A device for assembling and disassembling the rolls comprises a frame 1, on which are mounted supporting posts 2, 3 with cylindrical lodgements 4 under the necks of the roll 5 and two carts 6, 7 with a mechanism 8 for fixing pillows mounted on the frame 1 with the possibility of movement in the axial direction from hydraulic cylinders 9, 10. On the supporting posts 2, 3 are mounted lever grips in the form of two levers 11, 12, fixed by hinges 13, 14. The lower ends of the levers 11, 12 are interconnected by a hydraulic cylinder 15, and the upper ones are provided with hinged heads 16, 17, having perhaps adjacent to the neck of the roll 5. Stops 18, 19 are also mounted on the supporting posts 2, 3, which can contact the inner surface of the lever 11 and 12, respectively. The working surface of the heads 16, 17 is cylindrical and corresponds to the cylindrical surface of the tool tray 4, and is also equipped with interchangeable pads 20 made of softer material, such as bronze.

The device operates as follows

Before assembly, the roll 5 is laid in the lodgements 4 support racks 2, 3, the carts 6, 7 while allotted to the extreme position from the roll, and the levers 11, 12 are divorced. Then, the levers 11, 12 are brought together by means of the hydraulic cylinder 15, while since the hydraulic cylinder 15 is not fixed on the support, it is possible that the levers 11, 12 may not move symmetrically, however, after one of the levers rests against the support 18 or 19 with its inner surface, the other lever continues to move and the symmetry of the position of the levers is restored. The heads 16, 17 when reducing the levers 11, 12 due to their hinge attachment are adjacent to the cylindrical surface of the neck of the roll 5, forming a continuation of the cylindrical surface of the tool tray 4, reliably gripping and clamping the neck of the roll 5, thereby fixing it from axial displacement. Pillows 21, 22 are mounted on carts 6, 7, fixed by mechanism 8, after which the carts 6, 7 move the carts 6, 7 to their extreme forward position, while pillows 21, 22 are pushed onto the necks of the roll 5, then levers 11, 12 get divorced, and pillow mounting parts are manually installed. The new roll assembly with pillows is removed from the device by a tap.

Dismantling the roll with pillows is in the reverse order.

The proposed device provides reliable fixation in the axial direction of the rolls with a small difference in the diameters of the barrel and neck, and fixing is carried out in the middle of the frame, and not from the ends of the roll.

Claims (1)

A device for assembling and disassembling the rolling rolls, comprising a frame on which support posts with cylindrical tool holders are installed under the roll neck and two carts with a pillow locking mechanism mounted on the frame with the possibility of axial movement from the drive, as well as lever mounted in the middle part of the frame grippers for fixing the roll in the axial direction, characterized in that each lever grip is made in the form of two levers pivotally attached to each rack, the lower ends of which are connected to each other by means of a hydraulic cylinder, and the upper ones are equipped with hinged heads made with the possibility of abutment to the neck of the roll, with the stops mounted on the strut placed with the possibility of contact with the inner surface of the levers.

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