Full complement roller bearing for continuous casting machine and assembling device

Abstract

The invention relates to the technical field of bearings, in particular to a full complement roller bearing for a continuous casting machine and an assembling device.The full complement roller bearing for the continuous casting machine comprises a bearing outer ring, a bearing inner ring and rollers, two roller paths are arranged on the outer side face of the bearing inner ring, and a step is arranged at one end of the inner side face of the bearing outer ring; a clamping groove is formed in the other end of the inner side face of the bearing outer ring and internally provided with a clamping spring. An assembling device of a full complement roller bearing for a continuous casting machine comprises a bottom plate, a first fixing mechanism, a second fixing mechanism, a roller mounting mechanism, a position adjusting mechanism and a plurality of limiting assemblies, and during assembling, a bearing inner ring is mounted on the first fixing mechanism, a bearing outer ring is mounted on the second fixing mechanism, and the roller mounting mechanism is mounted on the position adjusting mechanism; the limiting assembly limits the bearing inner ring and the bearing outer ring, then the roller installation mechanism installs rollers in a roller path of the bearing inner ring, and the position adjusting mechanism controls the second fixing mechanism to move towards the side close to the first fixing mechanism till installation of the bearing outer ring is completed.

Description

Technical Field

[0001] The present invention relates to the technical field of bearings, and more particularly to a full complement roller bearing for a continuous casting machine and an assembling device therefor. Background Art

[0002] The double-row full complement cylindrical roller bearing is a heavy-duty bearing structure without a cage, including an inner ring, an outer ring and rollers. Compared with a common bearing with a cage, its rollers are full complement arranged, having the characteristics of small radial cross-section and high load-carrying capacity, and are widely used in low-speed and heavy-load occasions, such as the support rollers of continuous casting machines, the output ends of speed reducers, and the gearboxes of construction machinery.

[0003] At present, the assembly of double-row full complement roller bearings mostly adopts manual assembly. Due to the cage-free structure, the rollers lack restraint during the assembly process and are extremely easy to scatter. The operator needs to put an elastic binding strap on the outside of the inner ring of the bearing, and then load the rollers one by one. The binding strap maintains the position of the rollers to prevent them from falling out of the inner ring. After installing one row, use the above method to install the second row, and finally install the outer ring on the outside of the rollers. The above-mentioned manual assembly depends on manual experience, there is a risk of missing rollers, and the labor intensity of workers is high and the production efficiency is low. Therefore, there is an urgent need for an assembling device for double-row full complement cylindrical roller bearings to solve the above problems. Summary of the Invention

[0004] In order to improve the installation efficiency and quality of double-row full complement roller bearings, the present invention provides a full complement roller bearing for a continuous casting machine and an assembling device therefor.

[0005] The full complement roller bearing for a continuous casting machine and an assembling device therefor provided by the present invention adopt the following technical solutions:

[0006] In the first aspect,

[0007] An assembling device for a full complement roller bearing for a continuous casting machine, comprising:

[0008] A bottom plate having a top end face;

[0009] A first fixing mechanism for installing and fixing the inner ring of the bearing, including at least two arc-shaped plates. The extension lines of the outer side surfaces of different arc-shaped plates are located on the same circle, and different arc-shaped plates can approach or move away from each other, thereby changing the diameter of the circle where the extension line of the outer side surface is located;

[0010] A second fixing mechanism for clamping and fixing the outer ring of the bearing, and the second fixing mechanism is slidably arranged on the upper part of the bottom plate;

[0011] The roller installation mechanism is used to install rollers into the raceway of the inner ring, and includes a driving component and a roller storage box. Two accommodation cavities are arranged inside the roller storage box, and two discharge ports are arranged on the roller storage box. The driving component can control the rollers in the accommodation cavity to be discharged at the discharge ports, and only one roller can pass through one of the discharge ports at a time;

[0012] Wherein, first fixing plates and second fixing plates are arranged on opposite side surfaces of the bottom plate. A fixing rod is fixedly connected to one end surface of the first fixing plate close to the second fixing plate. The first fixing mechanism is movably arranged on the fixing rod, the second fixing mechanism is arranged on the side close to the second fixing plate, and the roller installation mechanism is slidably connected to the fixing rod.

[0013] By adopting the above technical solution, when assembling a full complement roller bearing, the bearing inner ring is sleeved outside the arc-shaped plate, and the arc-shaped plates are operated to move away from each other. The arc-shaped plates extrude the bearing inner ring, thereby fixing the bearing inner ring. The bearing outer ring is fixed on the second fixing mechanism. After the fixing is completed, the roller storage box filled with rollers is moved to the upper part of the bearing inner ring. The driving component works, and the rollers in the roller storage box are discharged at the discharge ports into the raceway of the bearing inner ring until the raceway is filled with rollers. The second fixing mechanism drives the bearing outer ring to slide towards the bearing inner ring until it contacts the roller installation mechanism. Subsequently, the second fixing mechanism continues to move, and at the same time, the roller installation mechanism moves away from the second fixing mechanism. The movement speeds of the second fixing mechanism and the roller installation mechanism are the same. The bearing outer ring is installed on the outside of the rollers until the assembly of the bearing outer ring is completed. Then, the second fixing mechanism releases the bearing outer ring and returns to its original position. The arc-shaped plates are operated to move closer to each other to remove the entire roller bearing to complete the installation of the bearing. The operation is simple, and there is no need to install the rollers one by one manually, reducing the probability of missing rollers, reducing the labor intensity of workers, and improving the assembly efficiency of the full complement roller bearing.

[0014] Further, the first fixing mechanism further includes an operating rod and two adjusting members. An installation hole is provided in the fixing rod. The operating rod is rotatably connected inside the fixing rod. The first end of the operating rod extends out at the end of the fixing rod close to the second fixing plate. The second end of the operating rod extends out at the end of the first fixing plate away from the second fixing plate. An operating portion is provided at the second end of the operating rod. Opposite threaded sections are provided at the first end of the operating rod. Threaded holes adapted to the threads on the operating rod are provided inside the two adjusting members. The thread directions of the two threaded holes are opposite. The two adjusting members are threadedly connected to the operating rod. A guide rod is provided on the adjusting member away from the fixing rod. The guide rod passes through the other adjusting member, and the other adjusting member is slidably connected to the guide rod. The end of the guide rod away from the adjusting member is slidably connected inside the fixing rod. When the operating rod rotates, the two adjusting members approach or move away from each other. At least two connecting rods are provided on each of the two adjusting members. The number of connecting rods on each adjusting member is the same as the number of arc-shaped plates. One end of the connecting rod is hinged to the arc-shaped plate, and the other end of the connecting rod is hinged to the adjusting member. When the two adjusting members approach each other, at least two arc-shaped plates will approach each other. When the two adjusting members move away from each other, at least two arc-shaped plates will move away from each other.

[0015] By adopting the above technical solution, when fixing the inner ring of the bearing, first place the inner ring of the bearing outside the arc-shaped plate, rotate the operating portion, the operating rod rotates, the guide rod guides the two adjusting members to prevent the adjusting members from rotating with the operating rod. The two adjusting members move away from each other, the connecting member raises the arc-shaped plate, the arc-shaped plates move away from each other, and the diameter of the circle formed by the outside of the arc-shaped plates becomes larger, and finally the inner ring of the bearing is fixed. The fixing and disassembly of the inner ring of the bearing can be achieved by rotating the operating portion, which is convenient to use and saves the time for fixing or disassembling the inner ring of the bearing.

[0016] Further, the roller installation mechanism further includes a sliding member. The sliding member is sleeved outside the fixing rod, and the sliding member is slidably connected to the fixing rod. A retaining ring is provided at the end of the sliding member close to the second fixing plate. The inner diameter of the retaining ring is the same as the inner diameter of the outer ring of the bearing. The retaining ring is used to keep the rollers in the raceway of the inner ring of the bearing. The roller storage box is installed on the upper part of the retaining ring. An opening for the rollers to be discharged is provided on the retaining ring at the lower part of the discharge port. A cylinder is provided between the sliding member and the first fixing plate. The fixed end of the cylinder is fixedly connected to the first fixing plate, and the output end of the cylinder is fixedly connected to the end face of the sliding member close to the first fixing plate. An insertion port is further provided on the side of the roller storage box.

[0017] By adopting the above technical solution, after the inner ring of the bearing is fixed on the arc-shaped plate, the cylinder pushes the sliding member to slide until the retaining ring is located outside the inner ring of the bearing, and the opening on the retaining ring is aligned with the raceway of the inner ring of the bearing. The rollers in the roller storage box can enter the raceway of the inner ring of the bearing, and a space for the raceway to move can be formed between the retaining ring and the raceway, reducing the probability of the rollers scattering during installation and improving the installation efficiency of the rollers at the same time. The insertion port can insert the rollers to replenish the rollers in the roller storage box.

[0018] Furthermore, a first limiting member is provided on the arc-shaped plate, and the first limiting member is fixedly connected to the outer side surface of the arc-shaped plate.

[0019] By adopting the above technical solution, when installing the inner ring of the bearing, the inner ring of the bearing is first inserted into one end of the arc-shaped plate and abuts against the first limiting member. The first limiting member positions the bearing axially, which is convenient for subsequent alignment with the discharge port of the roller storage box and also facilitates the second fixing mechanism to install the outer ring of the bearing on the inner ring of the bearing.

[0020] Furthermore, the driving assembly includes a first motor, a first lead screw, and a pushing plate. An installation space is provided between two accommodating cavities in the roller storage box. The first lead screw is arranged in the installation space and is rotatably connected to the roller storage box. The first motor is fixedly connected to the top of the roller storage box, and the first motor is in transmission connection with the first lead screw. The pushing plate is slidably connected in the roller storage box. A threaded hole adapted to the first lead screw is provided on the pushing plate, and the pushing plate is threadedly connected to the lead screw. The cross-sectional shape of the pushing plate in the roller storage box is the same. When the lead screw rotates, it can drive the pushing plate to move up and down in the roller storage box.

[0021] By adopting the above technical solution, the first motor rotates to drive the first lead screw to rotate, and the pushing plate slides downward. The pushing plate discharges the rollers in the accommodating cavity of the roller storage box to the space between the raceway of the inner ring of the bearing and the retaining ring at the discharge port until the pushing plate reaches the designated position, ensuring that the raceway is filled with rollers, accelerating the rate of the rollers being inserted into the raceway, and further improving the efficiency of bearing assembly.

[0022] Furthermore, at least one clamping block is arranged in the discharge port. The clamping block is slidably connected in the roller storage box. A circular hole is provided at the discharge port of the roller storage box. The clamping block is installed in the circular hole, and a spring is arranged in the circular hole. The spring can partially eject the clamping block.

[0023] By adopting the above technical solution, the clamping block protrudes at the discharge port of the roller storage box to block the rollers, preventing the rollers from falling in the discharge port without external force and affecting the installation of the bearing.

[0024] Further, a position adjustment mechanism is provided on the top end face of the base plate. The position adjustment mechanism is disposed on one side close to the second fixing plate. The position adjustment mechanism includes a second motor, a slider, a second lead screw, and a mounting plate. The mounting plate is fixedly connected to the top end face of the base plate. The second lead screw is rotatably connected between the second fixing plate and the mounting plate. The second motor is fixedly connected to one end face of the second fixing plate away from the first fixing plate. The second motor is in transmission connection with the second lead screw. A chute is provided on the base plate. A T-shaped block is provided at the bottom of the slider. The T-shaped block is configured in the chute and can slide in the chute. The sliding direction is the same as the axial direction of the second lead screw. A threaded hole adapted to the second lead screw is provided in the slider. The second lead screw passes through the threaded hole in the slider. When the second lead screw rotates, the slider can slide along the chute. The second fixing mechanism is provided on the slider.

[0025] By adopting the above technical solution, the second motor rotates to drive the second lead screw to rotate. The slider slides along the chute on the base plate in the direction close to the first fixing mechanism, so as to adjust the position of the second fixing mechanism and install the outer ring of the bearing on the outside of the inner ring of the bearing.

[0026] Further, the second fixing mechanism includes at least two clamping members and a locking member. The inner and outer side surfaces of at least two of the clamping members are both arc-shaped. The cross-sections of the inner side surfaces of at least two of the clamping members are located on the same circle. The axis of the circle formed by the clamping members is on the same straight line as the axis of the circle formed by the arc-shaped plate. One end of the clamping member close to the slider is hinged to the slider. A second limiting member is provided on the inner side surface of the clamping member. The outer side surface of the clamping member gradually increases in diameter from the end close to the slider to the end away from the slider. A locking hole is provided inside the locking member. The locking hole gradually increases in diameter from the end close to the slider to the end away from the slider. The locking member is disposed at one end of the clamping member close to the slider. External threads are provided on the outer side surface of the clamping member. Internal threads adapted to the external threads are provided inside the locking member. When the locking member is rotated, the locking member moves away from the slider, and at least two of the clamping members approach each other. A support ring is provided on the inner side surface of the clamping member. The support ring is elastic and is used to maintain the distance between the plurality of clamping members.

[0027] By adopting the above technical solution, in the initial state, the locking member is on the side of the clamping member close to the slider. The inner diameter of the circle formed by the plurality of clamping members is larger than the outer diameter of the outer ring of the bearing. The outer ring of the bearing is inserted into the clamping member at the end away from the slider and pushed inward until it contacts the second limiting member to achieve the axial positioning of the outer diameter of the bearing. Then, the locking member is rotated. The locking member moves away from the slider. The locking member presses the outer side surfaces of the plurality of clamping members. The ends of the clamping members away from the slider approach each other until the outer ring of the bearing is clamped to complete the fixation of the outer ring of the bearing. The fixation of the outer ring of the bearing is fast, improving the assembly efficiency of the bearing.

[0028] Furthermore, a rectangular plate is provided at the bottom of the retaining ring. A pressure sensor is provided on one end face of the rectangular plate close to the second fixing plate. The pressure sensor can contact the mounting plate. When the pressure sensor contacts the mounting plate and detects pressure, the opening of the retaining ring for discharging the rollers is aligned with the raceway of the bearing inner ring.

[0029] By adopting the above technical solution, when the cylinder pushes the sliding member to move, the pressure sensor also moves synchronously. When the pressure sensor detects pressure, it indicates that the opening of the retaining ring for discharging the rollers is aligned with the raceway of the bearing inner ring, and the operation of the cylinder stops, achieving the axial positioning of the retaining ring, ensuring that the rollers can enter the raceway of the bearing inner ring through the opening on the retaining ring, with accurate positioning and reducing the probability that the rollers cannot enter the raceway.

[0030] In the second aspect,

[0031] A full complement roller bearing for a continuous casting machine includes a bearing outer ring, a bearing inner ring, and rollers. The bearing outer ring is sleeved outside the bearing inner ring. Two raceways are provided on the outer side surface of the bearing inner ring. A step is provided at one end of the inner side surface of the bearing outer ring, and a clamping groove is provided at the other end of the inner side surface of the bearing outer ring. The rollers are installed between the raceways of the bearing inner ring and the bearing outer ring. A snap ring is provided in the clamping groove of the bearing outer ring. The hardness of the rollers is higher than that of the bearing inner ring and the bearing outer ring, and the plasticity of the bearing inner ring and the bearing outer ring is higher than that of the rollers.

[0032] By adopting the above technical solution, the bearings used in continuous casting machines need to save space and be able to withstand large forces. Due to its unique structural design, the double-row full complement roller bearing can provide a higher load-carrying capacity than traditional cage-type bearings under the same width, with a compact radial cross-section, enabling the maximum load-bearing effect in a limited space, and being convenient for disassembly. After the bearing is damaged, the snap ring is removed and the bearing outer ring is removed from the bearing inner ring, facilitating maintenance.

[0033] In summary, the present invention includes at least one of the following beneficial technical effects:

[0034] 1. By providing a step on one side of the bearing outer ring of the full complement roller bearing and a snap ring on the other side, after the bearing is damaged, the retaining ring is removed and the bearing outer ring is removed from the bearing inner ring, which is convenient for disassembly and installation, facilitating maintenance and replacement, and can provide a higher load-carrying capacity than traditional cage-type bearings under the same width, with a compact radial cross-section, enabling the maximum load-bearing effect in a limited space.

[0035] 2. Through the setting of the roller mounting mechanism, the retaining ring on the roller mounting mechanism can be located outside the inner ring of the bearing. By setting the pressure sensor, it is ensured that the opening on the retaining ring is aligned with the raceway of the inner ring of the bearing. The rollers in the roller storage box can enter the raceway of the inner ring of the bearing, and a space for the raceway to move can be formed between the retaining ring and the raceway, reducing the probability of the rollers scattering during installation. At the same time, the installation efficiency of the rollers is also improved, solving the problems of easy scattering and low efficiency in manual installation.

[0036] 3. Through the setting of the second fixing mechanism, the inner diameter of the retaining ring is the same as the inner diameter of the outer ring of the bearing. The position adjusting mechanism drives the second fixing mechanism to slide towards the side close to the retaining ring until it contacts the retaining ring. Subsequently, the second fixing mechanism continues to move, and at the same time, the cylinder drives the retaining ring to move in the direction away from the second fixing mechanism. The moving speed of the second fixing mechanism is the same as that of the roller mounting mechanism. The outer ring of the bearing is installed outside the rollers until the installation of the outer ring of the bearing is completed, and one end face of the outer ring of the bearing abuts against the retaining ring, reducing the probability of the rollers scattering during the installation of the outer ring of the bearing and realizing the installation of the outer ring of the bearing. Description of the Drawings

[0037] Figure 1 is the cross-sectional structure schematic diagram of the bearing of this application;

[0038] Figure 2 is the structure schematic diagram of the cooperation between the inner ring of the bearing and the rollers of this application;

[0039] Figure 3 is the structure schematic diagram of the outer ring of the bearing of this application;

[0040] Figure 4 is the structure schematic diagram of the whole assembly device of this application from the first perspective;

[0041] Figure 5 is the structure schematic diagram of the whole assembly device of this application from the second perspective;

[0042] Figure 6 is the cross-sectional structure schematic diagram of the whole assembly device of this application;

[0043] Figure 7 is the structure schematic diagram of a part of the first fixing mechanism of the assembly device of this application;

[0044] Figure 8 is the structure schematic diagram of the cooperation among the first fixing mechanism, the inner ring of the bearing and the roller mounting mechanism of the assembly device of this application;

[0045] Figure 9 is the structure schematic diagram of the cooperation among the retaining ring, the inner ring of the bearing and the rollers of the assembly device of this application;

[0046] Figure 10It is a schematic structural diagram of the cooperation between the second fixing mechanism and the slider of the assembly device of the present application;

[0047] Figure 11 It is a schematic cross-sectional structural diagram of the cooperation between the second fixing mechanism and the slider of the assembly device of the present application;

[0048] Figure 12 It is a schematic structural diagram of the clamping member of the assembly device of the present application;

[0049] Figure 13 It is a schematic structural diagram of the locking member of the assembly device of the present application;

[0050] Figure 14 It is a schematic structural diagram of the push plate of the assembly device of the present application;

[0051] Figure 15 It is a schematic structural diagram of the slider of the assembly device of the present application;

[0052] Reference numerals: 100, base plate; 110, chute; 120, first fixing plate; 130, second fixing plate; 140, fixing rod; 200, first fixing mechanism; 210, arc plate; 220, operating rod; 221, operating part; 230, adjusting part; 240, guiding rod; 250, connecting rod; 260, first limiting part; 300, second fixing mechanism; 310, clamping member; 320, locking member; 330, second limiting part; 340, support ring; 400, roller mounting mechanism; 410, driving assembly; 411, first motor; 412, first lead screw; 413, push plate; 420, roller storage box; 421, discharge port; 4211, block; 422, accommodating cavity; 423, insertion port; 430, sliding part; 440, retaining ring; 441, rectangular plate; 442, pressure sensor; 450, cylinder; 500, position adjusting mechanism; 510, second motor; 520, slider; 530, second lead screw; 540, mounting plate; 550, T-shaped block; 610, inner ring of bearing; 620, outer ring of bearing; 630, roller; 640, raceway; 650, clamping groove; 660, circlip; 670, step. Detailed implementation manners

[0053] The technical solutions in the embodiments of the present invention will be clearly and completely described below through specific specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Without conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention.

[0054] The following will be combined with Figures 1 - 15 to further elaborate on the present invention.

[0055] This embodiment discloses a full complement roller 630 bearing and an assembly device for a continuous casting machine. Referring to Figures 1 - 3 , in this embodiment, the bearing is a double-row full complement roller 630 bearing, which can better bear the large load of the support roller of the continuous casting machine. Referring to Figure 1 , a full complement roller 630 bearing for a continuous casting machine includes an outer bearing ring 620, an inner bearing ring 610, and rollers 630. The outer bearing ring 620 is sleeved on the outside of the inner bearing ring 610. Two raceways 640 are provided on the outer side surface of the inner bearing ring 610. A step 670 is provided at one end of the inner side surface of the outer bearing ring 620, and a clamping groove 650 is provided at the other end of the inner side surface of the outer bearing ring 620. The rollers 630 are installed between the raceways 640 of the inner bearing ring 610 and the outer bearing ring 620. A snap ring 660 is provided in the clamping groove 650 of the outer bearing ring 620. The inner and outer bearing rings and the rollers 630 are in logarithmic surface contact to cope with the environmental application. According to the damage mechanism of the raceway and the rollers 630, the material uses a differential friction pair of the raceway and the rollers 630. The hardness of the rollers 630 is higher than that of the inner bearing ring 610 and the outer bearing ring 620, and the plasticity of the inner bearing ring 610 and the outer bearing ring 620 is higher than that of the rollers 630.

[0056] In this way, the bearings used in continuous casting machines need to save space and be able to bear large forces. Due to its unique structural design, the double-row full complement roller 630 bearing can provide a higher load-bearing capacity than traditional bearings with cages under the same width, with a compact radial cross-section, and can achieve the maximum load-bearing effect in a limited space. Moreover, the rollers 630 in the bearing have a higher hardness and are not easily damaged. This bearing is convenient to disassemble. After the bearing is damaged, the snap ring 660 is removed and the outer bearing ring 620 is removed from the inner bearing ring 610, which is convenient for maintenance.

[0057] Referring to Figures 4 - 15, An assembly device for a full complement roller 630 bearing used in a continuous casting machine, comprising a bottom plate 100 serving as a support base, a first fixing mechanism 200 for fixing the inner ring 610 of the bearing, a second fixing mechanism 300 for fixing the outer ring 620 of the bearing, a roller mounting mechanism 400 for mounting rollers 630 along the diameter of the inner ring 610 and the outer ring 620 of the bearing, a position adjustment mechanism 500 for adjusting the position of the second fixing mechanism 300 to achieve the installation of the outer ring 620 of the bearing, and multiple limit components for restricting the positions of each mechanism. During assembly, first, the inner ring 610 of the bearing is mounted on the first fixing mechanism 200 and locked, and the outer ring 620 of the bearing is mounted on the second fixing mechanism 300 and locked. The limit components limit the inner ring 610 and the outer ring 620 of the bearing. Then, the roller mounting mechanism 400 moves to the outside of the inner ring 610 of the bearing, and rollers 630 are mounted into the raceway 640 of the inner ring 610 of the bearing. After the installation is completed, the position adjustment mechanism 500 controls the second fixing mechanism 300 to move towards the side close to the first fixing mechanism 200 until the outer ring 620 of the bearing is completely mounted outside the inner ring 610 and the rollers 630.

[0058] Refer to Figures 4 - 6 , The bottom plate 100 is a rectangular plate 441. The bottom plate 100 has a top end face. First fixing plates 120 and second fixing plates 130 are provided on opposite side faces of the bottom plate 100. A fixing rod 140 is fixedly connected to one end face of the first fixing plate 120 close to the second fixing plate 130. The fixing rod 140 is cylindrical, and the axis of the fixing rod 140 is perpendicular to the end face of the first fixing plate 120 where the fixing rod 140 is connected.

[0059] Refer to Figures 4 - 8, in this embodiment, the first fixing mechanism 200 includes at least two arc-shaped plates 210, an operating rod 220 and two adjusting members 230. Four arc-shaped plates 210 are provided. The extension lines of the outer sides of different arc-shaped plates 210 are located on the same circle. Different arc-shaped plates 210 can approach or move away from each other, thereby changing the diameter of the circle where the extension line of the outer side is located. The first fixing mechanism 200 is movably arranged on the fixing rod 140. An installation hole is provided in the fixing rod 140. The operating rod 220 is rotatably connected inside the fixing rod 140. The first end of the operating rod 220 extends out of the end of the fixing rod 140 close to the second fixing plate 130, and the second end of the operating rod 220 extends out of the end of the first fixing plate 120 away from the second fixing plate 130. An operating portion 221 is provided at the second end of the operating rod 220. Opposite threaded sections are provided at the first end of the operating rod 220. Threaded holes adapted to the threads on the operating rod 220 are provided inside the two adjusting members 230. The rotation directions of the two threaded holes are opposite. The two adjusting members 230 are threadedly connected to the operating rod 220. A guide rod 240 is provided on the adjusting member 230 away from the fixing rod 140. The guide rod 240 passes through the other adjusting member 230, and the other adjusting member 230 is slidably connected to the guide rod 240. The end of the guide rod 240 away from the adjusting member 230 is slidably connected inside the fixing rod 140. When the operating rod 220 rotates, the two adjusting members 230 approach or move away from each other. Each of the two adjusting members 230 is provided with at least two connecting rods 250. The number of connecting rods 250 on each adjusting member 230 is the same as the number of arc-shaped plates 210. One end of the connecting rod 250 is hinged to the arc-shaped plate 210, and the other end of the connecting rod 250 is hinged to the adjusting member 230. When the two adjusting members 230 approach each other, at least two arc-shaped plates 210 will approach each other. When the two adjusting members 230 move away from each other, at least two arc-shaped plates 210 will move away from each other. A first limiting member 260 is provided on the arc-shaped plate 210. The first limiting member 260 is fixedly connected to the outer side of the arc-shaped plate 210.

[0060] Thus, when fixing the inner ring 610 of the bearing, first place the inner ring 610 of the bearing outside the arc-shaped plate 210. Rotate the operating portion 221, and the operating rod 220 rotates. The guide rod 240 guides the two adjusting members 230 to prevent the adjusting members 230 from rotating along with the operating rod 220. The two adjusting members 230 move away from each other, and the connecting members lift the arc-shaped plates 210. The arc-shaped plates 210 move away from each other, and the diameter of the circle formed by the outside of the arc-shaped plates 210 becomes larger. Finally, the inner ring 610 of the bearing is fixed. By rotating the operating portion 221, the fixing and disassembly of the inner ring 610 of the bearing can be achieved, which is convenient to use and saves the time for fixing or disassembling the inner ring 610 of the bearing.

[0061] When installing the inner ring 610 of the bearing, the inner ring 610 of the bearing is first inserted into one end of the arc-shaped plate 210 and abuts against the first limiting member 260. The first limiting member 260 positions the bearing axially, which can facilitate subsequent alignment with the discharge port 421 of the roller storage box 420, and also facilitates the second fixing mechanism 300 to install the outer ring 620 of the bearing on the inner ring 610 of the bearing.

[0062] Referring to Figures 4 - 6 , Figures 8 - 9 , in this embodiment, the roller installation mechanism 400 includes a driving assembly 410, a roller storage box 420, and a sliding member 430. Two accommodation cavities 422 are provided inside the roller storage box 420, and two discharge ports 421 are provided on the roller storage box 420. The driving assembly 410 can control the rollers 630 in the accommodation cavity 422 to be discharged at the discharge port 421. Only one roller 630 can pass through one discharge port 421 at a time. The roller installation mechanism 400 is slidably connected to the fixed rod 140. The sliding member 430 is sleeved outside the fixed rod 140, and the sliding member 430 is slidably connected to the fixed rod 140. A retaining ring 440 is provided at one end of the sliding member 430 close to the second fixing plate 130. The inner diameter of the retaining ring 440 is the same as the inner diameter of the outer ring 620 of the bearing. The retaining ring 440 is used to keep the rollers 630 in the raceway 640 of the inner ring 610 of the bearing. The roller storage box 420 is installed on the upper part of the retaining ring 440. An opening for discharging the rollers 630 is provided on the retaining ring 440 below the discharge port 421. A cylinder 450 is provided between the sliding member 430 and the first fixing plate 120. The fixed end of the cylinder 450 is fixedly connected to the first fixing plate 120, and the output end of the cylinder 450 is fixedly connected to one end face of the sliding member 430 close to the first fixing plate 120. An insertion port 423 is also provided on the side of the roller storage box 420.

[0063] A rectangular plate 441 is provided at the bottom of the retaining ring 440. A pressure sensor 442 is provided on one end face of the rectangular plate 441 close to the second fixing plate 130. The pressure sensor 442 can contact the mounting plate 540. When the pressure sensor 442 contacts the mounting plate 540 and detects pressure, the opening of the retaining ring 440 for discharging the rollers 630 is aligned with the raceway 640 of the inner ring 610 of the bearing.

[0064] Thus, after the inner ring 610 of the bearing is fixed on the arc-shaped plate 210, the air cylinder 450 pushes the sliding member 430 to slide until the retaining ring 440 is located outside the inner ring 610 of the bearing, and the opening on the retaining ring 440 is aligned with the raceway 640 of the inner ring 610 of the bearing. The rollers 630 in the roller storage box 420 can enter the raceway 640 of the inner ring 610 of the bearing, and a space for the movement of the raceway 640 can be formed between the retaining ring 440 and the raceway 640, reducing the probability of the rollers 630 scattering during installation and improving the installation efficiency of the rollers 630 at the same time. The placement port 423 can place the rollers 630 to replenish the rollers 630 in the roller storage box 420.

[0065] When the air cylinder 450 pushes the sliding member 430 to move, the pressure sensor 442 also moves synchronously. When the pressure sensor 442 detects pressure, it indicates that the opening of the retaining ring 440 for discharging the rollers 630 is aligned with the raceway 640 of the inner ring 610 of the bearing, and the operation of the air cylinder 450 stops, realizing the axial positioning of the retaining ring 440, ensuring that the rollers 630 can enter the raceway 640 of the inner ring 610 of the bearing through the opening on the retaining ring 440, with accurate positioning and reducing the probability of the rollers 630 being unable to enter the raceway 640.

[0066] Refer to Figure 8 , Figure 14 In this embodiment, the drive assembly 410 includes a first motor 411, a first lead screw 412, and a push plate 413. An installation space is provided between two accommodation cavities 422 in the roller storage box 420. The first lead screw 412 is arranged in the installation space, and the first lead screw 412 is rotatably connected to the roller storage box 420. The first motor 411 is fixedly connected to the top of the roller storage box 420, and the first motor 411 is in transmission connection with the first lead screw 412. The push plate 413 is slidably connected to the roller storage box 420. A threaded hole adapted to the first lead screw 412 is provided on the push plate 413. The push plate 413 is threadedly connected to the lead screw. The cross-sectional shape of the push plate 413 is the same as that in the roller storage box 420. The rotation of the lead screw can drive the push plate 413 to move up and down in the roller storage box 420.

[0067] Thus, the rotation of the first motor 411 drives the first lead screw 412 to rotate, and the push plate 413 slides downward. The push plate 413 discharges the rollers 630 in the accommodation cavity 422 of the roller storage box 420 to the space between the raceway 640 of the inner ring 610 of the bearing and the retaining ring 440 until the push plate 413 reaches the designated position, ensuring that the rollers 630 fill the raceway 640, accelerating the rate of the rollers 630 being loaded into the raceway 640 and further improving the efficiency of bearing assembly.

[0068] Refer to Figure 6 , Figure 8, in this embodiment, at least one clamping block 4211 is arranged in the discharge port 421. The clamping block 4211 is slidably connected in the roller storage box 420. A circular hole is arranged at the discharge port 421 of the roller storage box 420. The clamping block 4211 is installed in the circular hole. A spring is arranged in the circular hole, and the spring can partially eject the clamping block 4211; in another embodiment, the clamping block 4211 is arranged in the opening of the retaining ring 440.

[0069] In this way, the clamping block 4211 extends out at the discharge port 421 of the roller storage box 420 to block the roller 630, preventing the roller 630 from falling in the discharge port 421 without external force and affecting the installation of the bearing.

[0070] Refer to Figures 4 - 6 , Figure 15 , in this embodiment, a position adjusting mechanism 500 is arranged on the top end surface of the bottom plate 100. The position adjusting mechanism 500 is arranged on one side close to the second fixing plate 130. The position adjusting mechanism 500 includes a second motor 510, a slider 520, a second lead screw 530 and a mounting plate 540. The mounting plate 540 is fixedly connected to the top end surface of the bottom plate 100. The second lead screw 530 is rotatably connected between the second fixing plate 130 and the mounting plate 540. The second motor 510 is fixedly connected to one end surface of the second fixing plate 130 away from the first fixing plate 120. The second motor 510 is in transmission connection with the second lead screw 530. A chute 110 is arranged on the bottom plate 100. A T-shaped block 550 is arranged at the bottom of the slider 520. The T-shaped block 550 is arranged in the chute 110. The T-shaped block 550 can slide in the chute 110, and the sliding direction is the same as the axial direction of the second lead screw 530. A threaded hole adapted to the second lead screw 530 is arranged in the slider 520. The second lead screw 530 passes through the threaded hole of the slider 520. When the second lead screw 530 rotates, the slider 520 can slide along the chute 110. The second fixing mechanism 300 is arranged on the slider 520.

[0071] In this way, the second motor 510 rotates to drive the second lead screw 530 to rotate, and the slider 520 slides along the chute 110 on the bottom plate 100 in the direction close to the first fixing mechanism 200, so as to adjust the position of the second fixing mechanism 300 and install the bearing outer ring 620 on the outside of the bearing inner ring 610.

[0072] Refer to Figures 4 - 6 , Figures 10 - 13, in this embodiment, the second fixing mechanism 300 is slidably disposed on the upper portion of the base plate 100. The second fixing mechanism 300 is disposed on one side close to the second fixing plate 130. The second fixing mechanism 300 includes at least two clamping members 310 and a locking member 320. Preferably, three clamping members 310 are provided. The inner and outer sides of the three clamping members 310 are both arc-shaped. The cross-sections of the inner sides of the three clamping members 310 are located on the same circle. The axis of the circle formed by the clamping members 310 is in a straight line with the axis of the circle formed by the arc-shaped plate 210. One end of the clamping member 310 close to the slider 520 is hinged to the slider 520. A second limiting member 330 is provided on the inner side of the clamping member 310. The outer side of the clamping member 310 gradually increases in diameter from the end close to the slider 520 to the end away from the slider 520. A locking hole is provided inside the locking member 320, and the diameter of the locking hole gradually increases from the end close to the slider 520 to the end away from the slider 520. The locking member 320 is disposed at one end of the clamping member 310 close to the slider 520. External threads are provided on the outer side of the clamping member 310, and internal threads adapted to the external threads are provided inside the locking member 320. By rotating the locking member 320, the locking member 320 moves towards the end away from the slider 520, and the three clamping members 310 approach each other. A support ring 340 is provided on the inner side of the clamping member 310. The support ring 340 is elastic and is used to maintain the distance between the plurality of clamping members 310.

[0073] Thus, in the initial state, the locking member 320 is on the side of the clamping member 310 close to the slider 520. The inner diameter of the circle formed by the plurality of clamping members 310 is greater than the outer diameter of the bearing outer ring 620. The bearing outer ring 620 is inserted into the clamping member 310 at the end away from the slider 520 and pushed inward until it contacts the second limiting member 330 to achieve the axial positioning of the bearing outer diameter. Then, the locking member 320 is rotated, and the locking member 320 moves towards the side away from the slider 520. The locking member 320 presses the outer sides of the plurality of clamping members 310, and the ends of the clamping members 310 away from the slider 520 approach each other until the bearing outer ring 620 is clamped to complete the fixing of the bearing outer ring 620. The fixing of the bearing outer ring 620 is fast, improving the assembly efficiency of the bearing.

[0074] A controller is also provided on the base plate 100, not shown in the figure. The controller is electrically connected to the first motor 411, the second motor 510, the cylinder 450, and the pressure sensor 442 respectively. It should be understood that the position of the controller is set by the staff according to the actual situation during operation. The controller is used to control all the electrical components in this solution, including but not limited to sensors, motors, and the cylinder 450; the controller is an Intel processor, an AMD processor, a PLC controller, an ARM processor, or a single-chip microcomputer. The motherboard, memory, storage medium, and power supply are also used in combination. The power supply is mains power or a lithium battery; when there is a display screen, a display card is also provided.

[0075] The implementation principle of this embodiment is as follows:

[0076] When assembling the full complement roller 630 bearing, the inner ring 610 of the bearing is sleeved on the outer side of the arc plate 210. One end of the inner ring 610 of the bearing abuts against the first limiting member 260. The first limiting member 260 positions the bearing axially, which facilitates the subsequent alignment of the discharge port 421 of the roller storage box 420 and the rotation of the operation part 221. The operating rod 220 rotates, and the guiding rod 240 guides the two adjusting members 230 to prevent the adjusting members 230 from rotating along with the operating rod 220. The two adjusting members 230 move away from each other, and the connecting member raises the arc plate 210. The arc plates 210 move away from each other, and the diameter of the circle formed on the outer side of the arc plate 210 becomes larger, and finally the inner ring 610 of the bearing is fixed.

[0077] After the inner ring 610 of the bearing is fixed on the arc plate 210, the controller controls the air cylinder 450 to push the sliding member 430 to slide until the retaining ring 440 is located on the outer side of the inner ring 610 of the bearing, and the opening on the retaining ring 440 is aligned with the raceway 640 of the inner ring 610 of the bearing. When the air cylinder 450 pushes the sliding member 430 to move, the pressure sensor 442 also moves synchronously. When the pressure sensor 442 detects pressure, it indicates that the opening for the roller 630 to discharge on the retaining ring 440 is aligned with the raceway 640 of the inner ring 610 of the bearing, and the operation of the air cylinder 450 stops, realizing the axial positioning of the retaining ring 440, ensuring that the roller 630 can enter the raceway 640 of the inner ring 610 of the bearing through the opening on the retaining ring 440 with accurate positioning. The roller 630 in the roller storage box 420 can enter the raceway 640 of the inner ring 610 of the bearing. The first motor 411 rotates to drive the first lead screw 412 to rotate, and the pushing plate 413 slides downward. The pushing plate 413 discharges the roller 630 in the accommodation cavity 422 of the roller storage box 420 at the discharge port 421 between the raceway 640 of the inner ring 610 of the bearing and the retaining ring 440 until the pushing plate 413 reaches the designated position. The controller controls the first motor 411 to rotate in the reverse direction, and the pushing plate 413 resets, ensuring that the roller 630 fills the raceway 640. The retaining ring 440 can form a space for the raceway 640 to move with the raceway 640, reducing the probability of the roller 630 scattering during installation and improving the installation efficiency of the roller 630 at the same time. The insertion port 423 can insert the roller 630 to supplement the roller 630 in the roller storage box 420. The block 4211 extends at the discharge port 421 of the roller storage box 420 to block the roller 630 to prevent the roller 630 from falling in the discharge port 421 without external force.

[0078] The locking member 320 is located on the side of the clamping member 310 close to the slider 520. The inner diameter of the circle formed by the multiple clamping members 310 is greater than the outer diameter of the bearing outer ring 620. The bearing outer ring 620 is inserted into the clamping member 310 at the end far from the slider 520 and pushed inward until it contacts the second limiting member 330 to achieve the axial positioning of the bearing outer diameter. Then, the locking member 320 is rotated, and the locking member 320 moves toward the side far from the slider 520. The locking member 320 presses the outer side surfaces of the multiple clamping members 310, and the ends of the clamping members 310 far from the slider 520 approach each other until the bearing outer ring 620 is clamped to complete the fixation of the bearing outer ring 620.

[0079] Then, the controller controls the second motor 510 to rotate, driving the second lead screw 530 to rotate. The slider 520 slides along the chute 110 on the bottom plate 100 toward the direction close to the first fixing mechanism 200, enabling the position of the second fixing mechanism 300 to be adjusted. The bearing outer ring 620 is installed on the outside of the bearing inner ring 610. Specifically, the inner diameter of the retaining ring 440 is the same as the inner diameter of the bearing outer ring 620. The position adjusting mechanism 500 drives the second fixing mechanism 300 to slide toward the side close to the retaining ring 440 until it contacts the retaining ring 440. Subsequently, the second fixing mechanism 300 continues to move, and at the same time, the air cylinder 450 drives the retaining ring 440 to move away from the second fixing mechanism 300. The moving speeds of the second fixing mechanism 300 and the roller mounting mechanism 400 are the same. The bearing outer ring 620 is inserted outside the rollers 630 until the assembly of the bearing outer ring 620 is completed. During the process, one end face of the bearing outer ring 620 abuts against the retaining ring 440 to prevent the internal rollers 630 from falling out.

[0080] Then, the locking member 320 is rotated in the reverse direction, and the clamping member 310 releases the bearing outer ring 620. The controller controls the second motor 510 to rotate in the reverse direction, and the second fixing mechanism 300 retracts to its original position. The operating portion 221 is rotated in the reverse direction, and the arc-shaped plates 210 approach each other to remove the entire roller 630 bearing to complete the installation of the bearing. The operation is simple, and it is not necessary to install the rollers 630 one by one manually, reducing the probability of missing the installation of the rollers 630, reducing the labor intensity of the workers, and improving the assembly efficiency of the full complement roller 630 bearing.

[0081] The above are all the preferred embodiments of the present invention, and the protection scope of the present invention is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. An assembly device for a full complement roller bearing used in a continuous casting machine, characterized in that, Comprising: A bottom plate having a top end face; A first fixing mechanism for installing and fixing the inner ring of a bearing, including at least two arc-shaped plates. The extension lines of the outer side faces of different arc-shaped plates are located on the same circle, and different arc-shaped plates can approach or move away from each other, thereby changing the diameter of the circle where the extension lines of the outer side faces are located; A second fixing mechanism for clamping and fixing the outer ring of a bearing. The second fixing mechanism is slidably arranged on the upper part of the bottom plate; A roller installation mechanism for installing rollers into the raceway of the inner ring, including a driving component and a roller storage box. Two accommodating cavities are arranged inside the roller storage box, and two discharge ports are arranged on the roller storage box. The driving component can control the rollers in the accommodating cavity to be discharged at the discharge ports, and only one roller can pass through one discharge port at a time; Wherein, first fixing plates and second fixing plates are arranged on the opposite side faces of the bottom plate. A fixing rod is fixedly connected to the end face of the first fixing plate close to the second fixing plate. The first fixing mechanism is movably arranged on the fixing rod. The second fixing mechanism is arranged on the side close to the second fixing plate, and the roller installation mechanism is slidably connected to the fixing rod.

2. The assembling device for a full complement roller bearing used in a continuous casting machine according to claim 1, wherein The first fixing mechanism further includes an operating rod and two adjusting members. An installation hole is arranged inside the fixing rod. The operating rod is rotatably connected inside the fixing rod. The first end of the operating rod extends out of the fixing rod at the end close to the second fixing plate, and the second end of the operating rod extends out of the first fixing plate at the end far from the second fixing plate. An operating part is arranged at the second end of the operating rod. Opposite two sections of threads are arranged at the first end of the operating rod. Threaded holes adapted to the threads on the operating rod are arranged inside the two adjusting members. The rotation directions of the two threaded holes are opposite. The two adjusting members are threadedly connected to the operating rod. A guiding rod is arranged on the adjusting member far from the fixing rod. The guiding rod passes through the other adjusting member, and the other adjusting member is slidably connected to the guiding rod. The end of the guiding rod far from the adjusting member is slidably connected inside the fixing rod. When the operating rod rotates, the two adjusting members approach or move away from each other. At least two connecting rods are arranged on each of the two adjusting members. The number of connecting rods on each adjusting member is the same as the number of arc-shaped plates. One end of the connecting rod is hinged to the arc-shaped plate, and the other end of the connecting rod is hinged to the adjusting member. When the two adjusting members approach each other, at least two arc-shaped plates will approach each other. When the two adjusting members move away from each other, at least two arc-shaped plates will move away from each other.

3. The assembling device of the full complement roller bearing for continuous casting machine according to claim 1, characterized in that, The roller mounting mechanism further includes a sliding member, which is sleeved outside the fixed rod, and the sliding member is slidably connected to the fixed rod. A retaining ring is provided at one end of the sliding member close to the second fixing plate, and the inner diameter of the retaining ring is the same as the inner diameter of the outer ring of the bearing. The retaining ring is used to keep the rollers in the raceway of the inner ring of the bearing. The roller storage box is installed on the upper part of the retaining ring, and an opening for discharging the rollers is provided on the retaining ring at the lower part of the discharge port. A cylinder is provided between the sliding member and the first fixing plate. The fixed end of the cylinder is fixedly connected to the first fixing plate, and the output end of the cylinder is fixedly connected to one end face of the sliding member close to the first fixing plate. An insertion port is further provided on the side surface of the roller storage box.

4. The assembling device of the full complement roller bearing for continuous casting machine according to claim 1, characterized in that, A first limiting member is provided on the arc-shaped plate, and the first limiting member is fixedly connected to the outer side surface of the arc-shaped plate.

5. The assembling device of the full complement roller bearing for continuous casting machine according to claim 1, characterized in that, The driving assembly includes a first motor, a first lead screw and a pushing plate. An installation space is provided between two accommodating cavities in the roller storage box. The first lead screw is arranged in the installation space and is rotatably connected to the roller storage box. The first motor is fixedly connected to the top of the roller storage box, and the first motor is in transmission connection with the first lead screw. The pushing plate is slidably connected in the roller storage box. A threaded hole adapted to the first lead screw is provided on the pushing plate, and the pushing plate is threadedly connected to the first lead screw. The cross-sectional shape of the pushing plate in the roller storage box is the same. When the first lead screw rotates, it can drive the pushing plate to move up and down in the roller storage box.

6. The assembling device of the full complement roller bearing for continuous casting machine according to claim 1, characterized in that, At least one clamping block is provided in the discharge port, and the clamping block is slidably connected in the roller storage box. A round hole is provided at the discharge port of the roller storage box, and the clamping block is installed in the round hole. A spring is provided in the round hole, and the spring can partially eject the clamping block.

7. The assembling device of the full complement roller bearing for the continuous casting machine according to claim 1, characterized in that, A position adjusting mechanism is provided on the top end surface of the bottom plate, and the position adjusting mechanism is arranged on the side close to the second fixing plate. The position adjusting mechanism includes a second motor, a slider, a second lead screw and a mounting plate. The mounting plate is fixedly connected to the top end surface of the bottom plate. The second lead screw is rotatably connected between the second fixing plate and the mounting plate. The second motor is fixedly connected to one end surface of the second fixing plate away from the first fixing plate, and the second motor is in transmission connection with the second lead screw. A chute is provided on the bottom plate. A T-shaped block is provided at the bottom of the slider, and the T-shaped block is arranged in the chute and can slide in the chute. The sliding direction is the same as the axial direction of the second lead screw. A threaded hole adapted to the second lead screw is provided in the slider, and the second lead screw passes through the threaded hole in the slider. When the second lead screw rotates, the slider can slide along the chute. The second fixing mechanism is provided on the slider.

8. The assembling device for the full complement roller bearing used in the continuous casting machine according to claim 7, characterized in that, The second fixing mechanism includes at least two clamping members and a locking member. The inner and outer sides of at least two of the clamping members are both arc-shaped. The cross-sections of the inner sides of at least two of the clamping members are located on the same circle. The axis of the circle formed by the clamping members is on the same straight line as the axis of the circle formed by the arc-shaped plate. One end of the clamping member close to the slider is hinged to the slider. A second limiting member is provided on the inner side of the clamping member. The diameter of the outer side of the clamping member gradually increases from the end close to the slider to the end away from the slider. A locking hole is provided inside the locking member, and the diameter of the locking hole gradually increases from the end close to the slider to the end away from the slider. The locking member is provided at one end of the clamping member close to the slider. External threads are provided on the outer side of the clamping member, and internal threads adapted to the external threads are provided inside the locking member. By rotating the locking member, the locking member moves towards the end away from the slider, and at least two of the clamping members approach each other. A support ring is provided on the inner side of the clamping member. The support ring is elastic and is used to maintain the distance between the plurality of clamping members.

9. The assembling device of the full complement roller bearing for continuous casting machine according to claim 3, characterized in that , a rectangular plate is provided at the bottom of the retaining ring. A pressure sensor is provided on one end face of the rectangular plate close to the second fixing plate. The pressure sensor can contact the mounting plate. When the pressure sensor contacts the mounting plate and detects pressure, the opening for the roller to discharge in the retaining ring is aligned with the raceway of the inner ring of the bearing.

10. The full complement roller bearing for continuous casting machine assembled and produced by the assembling device according to any one of claims 1-9, characterized in that, It includes an outer ring of the bearing, an inner ring of the bearing, and rollers. The outer ring of the bearing is sleeved outside the inner ring of the bearing. Two raceways are provided on the outer side of the inner ring of the bearing. A step is provided at one end of the inner side of the outer ring of the bearing, and a clamping groove is provided at the other end of the inner side of the outer ring of the bearing. The rollers are installed between the raceways of the inner ring of the bearing and the outer ring of the bearing. A circlip is provided in the clamping groove of the outer ring of the bearing. The hardness of the rollers is higher than that of the inner ring and the outer ring of the bearing, and the plasticity of the inner ring and the outer ring of the bearing is higher than that of the rollers.

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