Improved side roller bearing

Abstract

The utility model discloses an improved side roller bearing, including device base and bearing body, the top fixedly connected with bearing shell A of device base, the top of bearing shell A is provided with bearing shell B, and both sides of bearing shell B top are provided with the locating block, when bearing shell A is connected with bearing shell B, the bottom of locating block is inserted to the inside of bearing shell A, and both sides of bearing shell A and bearing shell B are provided with connecting block B and connecting block A respectively, the bottom fixedly connected with the limiting seat of connecting block B, the top of connecting block A is provided with connecting assembly, and connecting assembly extends to the outside of connecting block A and is insertedly connected with connecting block B, and connecting assembly is used for connecting between bearing shell A and bearing shell B, and the inner wall of bearing shell A and bearing shell B all is provided with the locating groove, the utility model is positioned through bearing shell A cooperation locating block and locating hole, and bearing shell A and bearing shell B are quickly disassembled through the locating pin cooperation limiting block.

Description

Technical Field

[0001] This utility model relates to the field of bearings, and more particularly to an improved side roller bearing. Background Technology

[0002] The rolling mill is the core equipment for completing metal rolling. The rolling mill consists of rolls, mill stand, bearing housing, roll bearings, worktable, rolling guide, rail base, roll adjustment device, upper roll balancing device and roll changing device, etc. Among them, the rolls are the main working parts and tools that cause continuous plastic deformation of metal.

[0003] A rolling mill roll mainly consists of three parts: the roll body, the roll neck, and the shaft end. The roll body is the middle part of the roll that actually participates in the rolling of metal. The roll body has a smooth cylindrical or grooved surface. The roll neck is installed in the roll bearing and transmits the rolling force to the mill stand through the bearing housing and the pressing device. The shaft end at the drive end is connected to the gear seat through a connecting shaft, transmitting the rotational torque of the motor to the roll. Rolls can be arranged in two-roll, three-roll, four-roll, or multi-roll configurations in the rolling mill stand.

[0004] However, the roll bearing is the key component that makes the roll rotate. Because the rolling mill has a very large load, the rolling force can reach more than 10,000 tons. Therefore, the surface of the roll is damaged very quickly. The cold rolling mill needs to replace the roll and re-grind it after producing as little as 2,000 tons. Each time it is re-grinded, the roll bearing needs to be disassembled and then reinstalled. Most of the existing bearing mounting seats are fixed by bolts, which makes it more troublesome when the roll bearing needs to be replaced. Utility Model Content

[0005] To overcome the problem that replacing bearings is quite troublesome with existing bearing mounting housings.

[0006] The technical solution of this utility model is as follows: an improved side roller bearing, including a device base and a bearing body. A bearing housing A is fixedly connected to the top of the device base, and a bearing housing B is provided at the top of the bearing housing A. Positioning blocks are provided on both sides of the top of the bearing housing B. When the bearing housing A and the bearing housing B are connected, the bottom end of the positioning block is inserted into the inner side of the bearing housing A. A connecting block B and a connecting block A are respectively provided on both sides of the bearing housing A and the bearing housing B. A limiting seat is fixedly connected to the bottom end of the connecting block B. A connecting component is provided at the top of the connecting block A. The connecting component extends to the outer side of the connecting block A and is inserted into the connecting block B. The connecting component is used for connecting the bearing housing A and the bearing housing B. Positioning grooves are opened on the inner walls of the bearing housing A and the bearing body is inserted into the inner side of the positioning groove. The connecting component includes a positioning pin, and limiting blocks are movably connected to both sides of the positioning pin. When the positioning pin is inserted into the inner side of the connecting block B through the connecting block A, the limiting blocks on both sides of the positioning pin are engaged with the limiting seats on both sides.

[0007] Preferably, bearing housing A is positioned by using a positioning block and a positioning hole, and bearing housing A and bearing housing B are quickly assembled and disassembled by using a positioning pin and a limiting block.

[0008] Preferably, bolt holes are provided on both sides of the device base, and the device base can be fixedly connected to other equipment by bolts.

[0009] Preferably, the bearing housing B and the positioning block are an integral structure, and the top surface of the bearing housing A is provided with a positioning hole. When the bearing housing B is connected to the bearing housing A, the positioning block at the bottom of the bearing housing B is inserted into the inside of the positioning hole.

[0010] Preferably, the positioning groove is a semi-circular arc groove, and the diameter of the positioning groove is equal to the diameter of the bearing body. When the bearing body is connected to the bearing housing A or the bearing housing B, the bearing housing A and the bearing housing B are positioned and connected to the bearing body through the positioning groove.

[0011] Preferably, the top of the connecting block A has an insertion hole, and the bottom end of the positioning pin extends to the outside of the insertion hole and connects with the connecting block B.

[0012] Preferably, the limiting seat and the connecting block B are integrated into one structure. Both sides of the inner wall of the limiting seat are provided with through holes. When the positioning pin is inserted into the inner side of the limiting seat, the limiting blocks on both sides of the positioning pin extend to the outer side of the through holes.

[0013] Preferably, connecting springs are fixedly connected to both sides of the inner wall of the positioning pin, and the limiting block is movably connected to the positioning pin through the connecting springs.

[0014] The beneficial effects of this utility model are:

[0015] 1. In this improved side roller bearing, when bearing housing A and bearing housing B are connected, bearing housing A is positioned by cooperating with the positioning block and positioning hole;

[0016] 2. This improved side roller bearing allows for quick assembly and disassembly of bearing housing A and bearing housing B via a positioning pin and a limiting block. Attached Figure Description

[0017] Figure 1 The diagram shown is a schematic representation of the overall structure of the improved side roller bearing of this utility model. Figure 1 ;

[0018] Figure 2 The diagram shown is a schematic representation of the overall structure of the improved side roller bearing of this utility model. Figure 2 ;

[0019] Figure 3 The diagram shown is a schematic representation of the structure of the bearing housing B of the improved side roller bearing of this utility model.

[0020] Figure 4The diagram shown is a schematic representation of the structure of the connecting block B of the improved side roller bearing of this utility model.

[0021] Figure 5 The diagram shown is a schematic of the positioning pin structure of the improved side roller bearing of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Device base; 2. Bearing housing A; 3. Bearing housing B; 4. Connecting block A; 5. Connecting block B; 6. Positioning pin; 7. Bearing body; 8. Limiting block; 9. Positioning block; 10. Positioning hole; 11. Positioning groove; 12. Limiting seat; 13. Connecting spring. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] The equipment used to realize the metal rolling process. Generally speaking, it refers to the equipment that completes the entire process of rolled material production, including uncoiling machines, rolling systems, drive systems, hydraulic systems, control systems, and roll unwinding devices. However, the term "rolling mill" usually refers only to the main equipment. Rolling mills are said to have existed in Europe as early as the 14th century, but the earliest recorded design is a sketch by the Italian Leonardo da Vinci in 1480. In 1553, the Frenchman Brueler rolled gold and silver plates for the manufacture of coins. Rolling mills subsequently appeared in Spain, Belgium, and England.

[0025] The rolling mill consists of rolling mill rolls, rolling mill stand, bearing housing, bearings, self-contained winding or unwinding platform, base, rolling mill roll adjustment device, upper rolling mill roll balancing device, and rolling mill roll changing device.

[0026] Roll bearings support the rolls and maintain their fixed position within the mill frame. Roll bearings bear heavy and variable workloads, requiring low friction coefficients, sufficient strength and rigidity, and ease of roll replacement, such as cylindrical roller bearings. Different types of roll bearings are selected for different mills. Cylindrical roller bearings have high rigidity, low friction coefficients, and can withstand high pressure, facilitating roll disassembly, but are relatively expensive. Rolling bearings have high rigidity and low friction coefficients, but lower pressure capacity and larger dimensions, and are mostly used in strip mill work rolls. Sliding bearings come in two types: semi-dry friction and fluid friction. Semi-dry friction roll bearings are mainly made of bakelite, copper, or nylon, and are relatively inexpensive, often used in profile mills and billet mills. Fluid friction bearings come in three types: hydrodynamic, hydrostatic, and hydrostatic-hydrodynamic. Their advantages include low friction coefficients, high pressure capacity, high operating speeds, and good rigidity; the disadvantage is that the oil film thickness varies with speed. Fluid friction bearings are mostly used in strip mill support rolls and other high-speed mills.

[0027] The mill frame consists of two rectangular panels to house the roll bearing seats and roll adjustment devices. It must possess sufficient strength and rigidity to withstand rolling forces. Mill frames are mainly of two types: closed and open. A closed mill frame is a single, integral frame with high strength and rigidity, primarily used in primary rolling mills and strip mills with high rolling forces. Roll changing guides can be installed below the rectangular mill frame, connected to an external roll changing trolley, facilitating roll changes.

[0028] Roll adjustment device: Used to adjust the roll gap so that the rolled workpiece reaches the required cross-sectional dimensions. The upper roll adjustment device, also known as the "reduction device," comes in three types: manual, electric, and hydraulic. Manual reduction devices are mostly used on section rolling mills and small rolling mills. Electric reduction devices include components such as a motor, reducer, brake, reduction screw, reduction nut, reduction position indicator, spherical pad, and pressure gauge; it has low transmission efficiency, large rotational inertia of moving parts, slow response speed, and low adjustment accuracy. Since the 1970s, with the adoption of AGC (Automatic Gauge Control) systems in strip and plate rolling mills, hydraulic reduction devices have been used in new cold and hot strip rolling mills and thick plate rolling mills, offering advantages such as smaller thickness deviations and higher product qualification rates.

[0029] Upper roll balancing device: This device is used to lift the upper roll and prevent the workpiece from being impacted when entering and exiting the roll. Types include: spring type (commonly used in section mills); counterweight type (commonly used in primary mills with large roll movement); and hydraulic type (commonly used in four-high strip mills). To improve operating efficiency, the mill requires rapid and convenient roll changing. There are four roll changing methods: C-hook type, sleeve type, trolley type, and whole-stand roll changing. The first two methods rely on crane assistance, while whole-stand roll changing requires two stands and is mostly used in smaller mills. Trolley roll changing is suitable for larger mills and facilitates automation. Nowadays, mills use rapid automatic roll changing devices, requiring only 5-8 minutes to change a roll.

[0030] The transmission device consists of an electric motor, a reducer, a gear housing, and a connecting shaft. The gear housing distributes the transmission torque to two or more rolls.

[0031] Auxiliary equipment: This includes equipment for a series of auxiliary processes during rolling, such as equipment for raw material preparation, heating, steel turning, shearing, straightening, cooling, flaw detection, heat treatment, pickling, etc.

[0032] The trend in modern rolling mill development is towards continuous, automated, and specialized production, resulting in high-quality products with low consumption. Since the 1960s, significant progress has been made in the design, research, and manufacturing of rolling mills, leading to improved performance in strip cold and hot rolling mills, plate mills, high-speed wire rod mills, H-section mills, and continuous tube rolling mills. Advanced equipment such as wire rod mills with rolling speeds up to 115 meters per second, fully continuous strip cold rolling mills, 5500 mm wide and thick plate mills, and continuous H-section steel mills have emerged. The weight of raw materials used in rolling mills has increased, and hydraulic AGC, shape control, electronic computer program control, and testing methods have become increasingly sophisticated, leading to a continuous expansion of rolled product varieties. New rolling methods suitable for continuous casting and rolling, controlled rolling, and various special-structure rolling mills have been developed to meet new product quality requirements and improve economic efficiency.

[0033] Due to the harsh working environment of the rolling mill, the cooling water rapidly atomizes upon contact with the red-hot steel billet during operation, spraying iron oxide powder detached from the billet surface in all directions. The rolls, through the bearing housings, exert significant impact on the mill stand arch, causing varying degrees of corrosion and wear on the inner window surfaces and bottom of the mill stand arch. This makes effective control of the clearance between the mill stand and the roll bearing housings difficult, frequently exceeding the controllable limits. Increased clearance worsens the working conditions of the main drive system, resulting in greater vibration and impact, and making it prone to slippage during ingot biting, affecting shape control and significantly impacting product quality.

[0034] Please see Figures 1-5This utility model provides an embodiment of an improved side roller bearing, including a device base 1 and a bearing body 7. A bearing housing A2 is fixedly connected to the top of the device base 1, and a bearing housing B3 is disposed at the top of the bearing housing A2. Positioning blocks 9 are disposed on both sides of the top of the bearing housing B3. When the bearing housing A2 and bearing housing B3 are connected, the bottom end of the positioning block 9 is inserted into the inner side of the bearing housing A2. Connecting blocks B5 and A4 are respectively disposed on both sides of the bearing housing A2 and bearing housing B3. A limiting seat 12 is fixedly connected to the bottom end of the connecting block B5. A connecting component is disposed at the top of the connecting block A4, extending to the outer side of the connecting block A4 and inserting into the connecting block B5. The connecting component is used for connecting the bearing housing A2 and bearing housing B3. The inner wall of B3 is provided with positioning grooves 11, and the bearing body 7 is inserted into the inner side of the positioning groove 11. The connecting component includes a positioning pin 6, and the two sides of the positioning pin 6 are movably connected with limit blocks 8. When the positioning pin 6 is inserted into the inner side of the connecting block B5 through the connecting block A4, the limit blocks 8 on both sides of the positioning pin 6 are engaged with the two sides of the limit seat 12. Thus, the bearing housing A2 and the bearing housing B3 can be quickly fixed by the positioning pin 6 and the limit blocks 8. When the bearing housing A2 and the bearing housing B3 are connected, the bearing housing A2 is positioned with the positioning block 9 and the positioning hole 10. When it is necessary to replace the bearing body 7 inside the bearing housing A2 and the bearing housing B3, the bearing housing A2 and the bearing housing B3 can be quickly disassembled and assembled by pressing the two limit blocks 8, thereby improving the disassembly and assembly efficiency of the device.

[0035] Please see Figures 2-3 In this embodiment, bolt holes are provided on both sides of the device base 1. The device base 1 can be fixedly connected to other equipment by bolts. The bearing housing B3 and the positioning block 9 are integral structures. The top surface of the bearing housing A2 is provided with a positioning hole 10. When the bearing housing B3 is connected to the bearing housing A2, the positioning block 9 at the bottom of the bearing housing B3 is inserted into the inner side of the positioning hole 10. The positioning groove 11 is a semi-circular arc groove. The diameter of the positioning groove 11 is equal to the diameter of the bearing body 7. When the bearing body 7 is connected to the bearing housing A2 or the bearing housing B3, the bearing housing A2 and the bearing housing B3 are positioned and connected to the bearing body 7 through the positioning groove 11.

[0036] Please see Figures 4-5 In this embodiment, the top of the connecting block A4 is provided with an insertion hole, and the bottom end of the positioning pin 6 extends to the outside of the insertion hole and connects with the connecting block B5. The limiting seat 12 and the connecting block B5 are integrally structured. Both sides of the inner wall of the limiting seat 12 are provided with through holes. When the positioning pin 6 is inserted into the inner side of the limiting seat 12, the limiting blocks 8 on both sides of the positioning pin 6 extend to the outside of the through holes. Both sides of the inner wall of the positioning pin 6 are fixedly connected with connecting springs 13. The limiting blocks 8 are movably connected to the positioning pin 6 through the connecting springs 13.

[0037] During operation, the bearing body 7 is placed into the bearing housing A2. The bearing body 7 is limited by the positioning groove 11 on the inner side of the bearing housing A2. Then, the bearing housing B3 is connected to the bearing housing A2. When the bearing housing A2 and the bearing housing B3 are connected, the bearing housing A2 is positioned by the positioning block 9 and the positioning hole 10. Then, the positioning pin 6 is inserted into the connection between the bearing housing A2 and the bearing housing B3. The positioning pin 6 and the limiting block 8 are used to quickly fix the bearing housing A2 and the bearing housing B3. When it is necessary to replace the bearing body 7 inside the bearing housing A2 and the bearing housing B3, the bearing housing A2 and the bearing housing B3 can be quickly disassembled and assembled by pressing the two limiting blocks 8, thereby improving the disassembly and assembly efficiency of the device.

[0038] Through the above steps, the bearing housing A2 is positioned by the positioning block 9 and the positioning hole 10, and the bearing housing A2 and bearing housing B3 are quickly disassembled and assembled by the positioning pin 6 and the limiting block 8. This solves the problem that most existing bearing mounting seats are fixed by bolts, which is troublesome when the roll bearing needs to be replaced.

Claims

1. An improved side roller bearing, comprising a device base (1) and a bearing body (7), characterized in that: It also includes a bearing housing A (2) fixedly connected to the top of the device base (1), a bearing housing B (3) provided at the top of the bearing housing A (2), and positioning blocks (9) provided on both sides of the top of the bearing housing B (3). When the bearing housing A (2) is connected to the bearing housing B (3), the bottom end of the positioning block (9) is inserted into the inner side of the bearing housing A (2). Connecting blocks B (5) and connecting blocks A (4) are provided on both sides of the bearing housing A (2) and the bearing housing B (3). The bottom end of the connecting block B (5) is fixedly connected to the limit seat (12). The top end of the connecting block A (4) is provided with a connecting component. The connecting component extends to the outer side of the connecting block A (4) and is inserted into the connecting block B (5). The connecting component is used for connection between the bearing housing A (2) and the bearing housing B (3). The inner walls of the bearing housing A (2) and the bearing housing B (3) are provided with positioning grooves (11). The bearing body (7) is inserted into the inner side of the positioning groove (11). The connecting component includes a positioning pin (6), and two sides of the positioning pin (6) are movably connected to limit blocks (8). When the positioning pin (6) is inserted into the inside of the connecting block B (5) through the connecting block A (4), the limit blocks (8) on both sides of the positioning pin (6) are engaged in the two sides of the limit seat (12).

2. The improved side roller bearing according to claim 1, characterized in that: Bolt holes are provided on both sides of the device base (1), and the device base (1) can be fixedly connected to other equipment by bolts.

3. The improved side roller bearing according to claim 1, characterized in that: The bearing housing B (3) and the positioning block (9) are an integral structure. The top surface of the bearing housing A (2) is provided with a positioning hole (10). When the bearing housing B (3) is connected to the bearing housing A (2), the positioning block (9) at the bottom of the bearing housing B (3) is inserted into the inside of the positioning hole (10).

4. The improved side roller bearing according to claim 1, characterized in that: The positioning groove (11) is a semi-circular arc groove. The diameter of the positioning groove (11) is equal to the diameter of the bearing body (7). When the bearing body (7) is connected to the bearing housing A (2) or the bearing housing B (3), the bearing housing A (2) and the bearing housing B (3) are positioned and connected to the bearing body (7) through the positioning groove (11).

5. The improved side roller bearing according to claim 1, characterized in that: The top of the connecting block A (4) has an insertion hole, and the bottom end of the positioning pin (6) extends to the outside of the insertion hole and connects with the connecting block B (5).

6. The improved side roller bearing according to claim 1, characterized in that: The limiting seat (12) and the connecting block B (5) are integrated. Both sides of the inner wall of the limiting seat (12) are provided with through holes. When the positioning pin (6) is inserted into the inner side of the limiting seat (12), the limiting blocks (8) on both sides of the positioning pin (6) extend to the outer side of the through hole.

7. The improved side roller bearing according to claim 1, characterized in that: Both sides of the inner wall of the positioning pin (6) are fixedly connected with connecting springs (13), and the limiting block (8) is movably connected to the positioning pin (6) through the connecting springs (13).

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