CN201848682U - Dismounting device for roll bearing of universal rolling mill - Google Patents

Abstract

The utility model discloses a dismantling device, in particular discloses a dismantling device used for the roll bearing of a universal rolling mill. Provided is a dismantling device for universal rolling mill roll bearings with simple structure, convenient dismantling operation and high dismantling efficiency. A dismantling device for roll bearings of universal rolling mills, including a pressure-bearing round table, a force transmission structure and a power mechanism; the upper end surface of the pressure-bearing round table is attached to the lower end surface of the disassembled bearing installed in the disassembled bearing seat ; One end of the force transmission structure is connected to the pressure-bearing round platform; one end of the power mechanism is supported on the end face of the disassembled bearing seat, which is on the same side as the upper end face of the disassembled bearing, and the power The other end of the mechanism is tight against the other end of the force transmission structure.

Description

Dismounting device for universal rolling mill roll bearings

technical field

The utility model relates to a dismantling device, in particular to a dismantling device used for a universal rolling mill roll bearing. the

Background technique

Roll bearings of large universal rolling mills are subjected to high rolling pressure and harsh working environment, so they are generally lubricated by grease. In the dismantling method, after drilling and tapping on the end face of the bearing, the bearing is directly lifted out of the bearing housing with a spreader for disassembly. Due to the impurity entering between the bearing and the bearing seat or the force deformation of the bearing outer casing, the assembly clearance is eliminated, which will increase the disassembly resistance between the bearing and the inner hole of the bearing seat, and the bearing cannot be lifted out of the bearing seat normally. Removal will cause damage to the bearing and inefficiency in disassembly work. the

Utility model content

The technical problem to be solved by the utility model is to provide a dismantling device for universal rolling mill roll bearings with simple structure, convenient dismantling operation and high dismantling efficiency. the

The technical solution to solve the above technical problems is: a dismounting device for universal rolling mill roll bearings, including a pressure-bearing round table, a force transmission structure and a power mechanism; the upper end surface of the pressure-bearing round table and the The lower end surface of the disassembled bearing is attached; one end of the force transmission structure is connected to the pressure-bearing round platform; one end of the power mechanism is supported on the end surface of the disassembled bearing seat, and the end surface is connected to the disassembled bearing seat. The upper end surface of the bearing is on the same side, and the other end of the power mechanism is pressed against the other end of the force transmission structure. the

Further, the force transmission structure is a frame support composed of a support base plate and a door-shaped force transmission frame installed on the support base plate, and the lower end surface of the pressure-bearing circular platform is supported on the support base. On the bottom plate, the other end of the power mechanism is tightly pressed against the crossbeam of the door-shaped force transmission frame. the

Further, the force transmission structure is a T-shaped structure drawing support plate, the length of the horizontal side of the T-shaped structure drawing support plate is greater than the diameter of the outer ring of the disassembled bearing, and the T The free end of the vertical side of the drawing support plate with a font structure passes through the inner ring of the disassembled bearing and is connected with the pressure-bearing round platform, and the other end of the power mechanism is pressed against the horizontal side of the drawing support plate. on the lower edge. the

Further, a positioning convex circle with an outer diameter smaller than the inner diameter of the disassembled bearing is provided on one end surface of the pressure-bearing circular platform in contact with the disassembled bearing. the

Further, a guide piece is provided on the positioning convex circle. the

Further, the power mechanism is a jack. the

The beneficial effects of the utility model are: by setting a pressure-bearing round platform on one end surface of the disassembled bearing; making the upper end surface of the pressure-bearing round platform stick to the lower end surface of the disassembled bearing, so that the power mechanism will pass through The external force applied by the force transmission structure to make the removed bearing withdraw from the inner hole of the bearing seat is transmitted to the removed bearing to offset the disassembly resistance between the outer ring of the bearing and the inner hole of the bearing seat, thereby achieving a more convenient disassembly The purpose of dismounting the disassembled bearing from the inner hole of the bearing seat is that the device has a simple structure, convenient disassembly operation, and high disassembly efficiency for dismounting the roll bearing from the roll bearing seat, and at the same time avoids damage to the bearing caused by forced disassembly. Great promotion and application value. the

Description of drawings

Fig. 1 is the structural representation of the utility model used in universal rolling mill roll bearing dismantling device;

Fig. 2 is the A-A sectional view of Fig. 1 of the utility model;

Fig. 3 is a schematic diagram of another structure of the utility model used for dismounting the roll bearing. the

The marks in the figure are: pressure-bearing round table 1, positioning convex round table 11, guide member 12, drawing support plate 2, bearing seat 3, bearing 4, power mechanism 5, support bottom plate 6, and portal frame 7. the

Detailed ways

As shown in Figures 1 and 2, the utility model provides a dismantling device for universal rolling mill roll bearings with simple structure, convenient dismantling operation and high dismantling efficiency. The disassembly device includes a pressure-bearing round table 1, a force transmission structure and a power mechanism 5; the upper end surface of the pressure-bearing round table 1 is attached to the lower end surface of the disassembled bearing 4 installed in the disassembled bearing seat 3; One end of the force transmission structure is connected to the pressure-bearing round platform 1; one end of the power mechanism 5 is supported on the end surface of the disassembled bearing seat 3, which is on the same side as the upper end surface of the disassembled bearing 4, The other end of the power mechanism 5 is tightly pressed against the other end of the force transmission structure. After adopting the dismounting device with the above-mentioned structure, when I need to remove the bearing 4 from the bearing seat 3, it is only necessary to start the power mechanism 5 to apply a force through the force transmission structure to make the disassembled bearing 4 pass through the inner hole of the bearing seat 3. In order to offset the disassembly resistance between the outer ring of the disassembled bearing 4 and the inner hole of the bearing housing 3, the disassembled bearing 4 can be easily removed from the inner hole of the bearing housing 3. The device has the advantages of simple structure, convenient disassembly operation, high disassembly efficiency of dismounting the roll bearing from the roll chock, and avoids damage to the bearing caused by forced disassembly, and has great popularization and application value. the

The force transmission structure is a frame support composed of a support base plate 6 and a door-shaped force transmission frame 7 installed on the support base plate 6. The lower end surface of the pressure-bearing round table 1 is supported on the support base plate 6. On the base plate 6, the other end of the power mechanism 5 is tightly pressed against the crossbeam of the door-shaped force transmission frame 7. The characteristics of this force transmission structure are: there are many parts that make up the force transmission structure, and the production is relatively complicated, but the force transmission structure is stable and reliable in use, and is especially suitable for large volumes that require a large external force to work. Used in disassembled bearings. The utility model also provides another force transmission structure, that is, the force transmission structure is a T-shaped drawing support plate 2, and the length of the horizontal side of the T-shaped structure drawing support plate 2 is greater than the diameter of the outer ring of the disassembled bearing 4, the free end of the vertical side of the T-shaped structure drawing support plate 2 passes through the inner ring of the disassembled bearing 4 and is connected with the pressure-bearing round table 1, so The other end of the power mechanism 5 is tightly pressed against the lower edge of the horizontal side of the drawing support plate 2 . The characteristics of this force transmission structure are: there are few parts constituting the force transmission structure, and the manufacture is simple, but the force stability in use is poor, and it is mainly suitable for bearing structures with small size and small external force for disassembly. used in . the

Generally, the weight of the removed bearing 4 and the bearing seat 3 is relatively large, and the cooperation between the pressure-bearing round table 1 and the removed bearing 4 is very critical during disassembly. In order to make the pressure-bearing round table 1 and the removed bearing 4 cooperate To achieve the best effect, one end surface of the pressure-bearing round table 1 in contact with the disassembled bearing 4 is provided with a positioning convex circle 11 whose outer diameter is smaller than the inner diameter of the disassembled bearing 4; on the positioning convex circle 11 A guide 12 is provided. In this way, the disassembled bearing 4 can be hoisted and matched with the pressure-bearing round table 1 very conveniently, thereby improving disassembly efficiency. the

The power mechanism 5 can be a hydraulic cylinder, but the purchase cost of the hydraulic cylinder is high, and the structure is more complicated, and it is inconvenient to use. For this reason, the power mechanism 5 described in the utility model is a jack, which can be a hydraulic jack or a mechanism mechanical jack. the

Claims (6)

1. The dismounting device for universal rolling mill roll bearings is characterized in that: it comprises a pressure-bearing round platform (1), a force transmission structure and a power mechanism (5); The lower end surface of the disassembled bearing (4) in the seat (3) is attached; one end of the force transmission structure is connected with the pressure-bearing round table (1); one end of the power mechanism (5) is supported on the On the end face of the removed bearing seat (3), the end face is on the same side as the upper end face of the removed bearing (4), and the other end of the power mechanism (5) is pressed against the other end of the force transmission structure. 2. The dismantling device for universal rolling mill roll bearings according to claim 1, characterized in that: the force transmission structure is a support base plate (6) and a door installed on the support base plate (6) A frame support composed of a type force transmission frame (7), the lower end surface of the pressure-bearing round platform (1) is supported on the support bottom plate (6), and the other end of the power mechanism (5) is pressed against the On the crossbeam of described portal type force transmission frame (7). 3. The dismantling device for universal rolling mill roll bearings according to claim 1, characterized in that: the force transmission structure is a T-shaped drawing support plate (2), and the T-shaped structure pulls The length of the horizontal side of the pulling plate (2) is greater than the diameter of the outer ring of the removed bearing (4), and the free end of the vertical side of the T-shaped structure pulling the supporting plate (2) passes through the removed The inner ring of the bearing (4) is connected with the pressure-bearing round platform (1), and the other end of the power mechanism (5) is pressed against the lower edge of the horizontal side of the drawing support plate (2). 4. The dismantling device for universal rolling mill roll bearings according to claim 1, characterized in that: an end surface of the pressure-bearing round table (1) in contact with the disassembled bearing (4) is provided with an outer diameter The positioning convex circle (11) is smaller than the inner diameter of the disassembled bearing (4). 5. The dismantling device for universal rolling mill roll bearings according to claim 4, characterized in that: a guide piece (12) is provided on the positioning convex circle (11). 6. The dismantling device for roll bearings of universal rolling mills according to any one of claims 1-5, characterized in that: the power mechanism (5) is a jack. the

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