Wear-resistant tapered roller bearing and preparation device

Abstract

The invention relates to the field of tapered roller bearings, in particular to a wear-resistant tapered roller bearing and a preparation device. A wear-resistant tapered roller bearing comprises an inner ring, the outer circumferential surface of the inner ring is a conical surface, the inner circumferential surface of an outer ring is a conical surface, a plurality of tapered rollers are arranged between the inner ring and the outer ring, a plurality of inserting strips are annularly arranged on the outer ring, rotating shafts are rotationally connected to the inserting strips, rollers are fixed to the rotating shafts, and the rollers are arranged on the left side of the outer ring. The roller blocks the left side of the inner ring to prevent the inner ring from separating from the outer ring. The preparation device comprises a door-shaped frame, square columns are slidably connected to the front end and the rear end of the door-shaped frame, clamping claws are fixed to the opposite ends of the two square columns, the two square columns are driven by hydraulic cylinders to slide, side shafts are fixed to the front side and the rear side of the door-shaped frame, and the two side shafts are rotatably connected to the front end and the rear end of a bottom frame respectively. The bearing has the beneficial effect of preventing the inner ring from being separated from the outer ring.

Description

Technical Field

[0001] This invention relates to the field of tapered roller bearings, and more specifically to a wear-resistant tapered roller bearing and its manufacturing apparatus. Background Technology

[0002] Tapered roller bearings are widely used in heavy-duty, high-speed applications such as industrial equipment and automotive wheel hubs, where they must withstand both radial and axial loads simultaneously. The reliability of the inner and outer ring connection directly affects the operational safety of the host machine. However, in actual operating conditions, bearings are subjected to alternating axial forces, impact loads, and vibrations over long periods. Existing technologies have significant limitations in preventing the inner and outer rings from separating. Current anti-separation designs mainly rely on elastic retaining rings, cages, or simple flange structures, which are prone to twisting and breaking under large axial forces, thus losing their limiting function. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention provides a wear-resistant tapered roller bearing and a manufacturing apparatus, which has the beneficial effect of preventing the inner ring from separating from the outer ring.

[0004] The technical solution adopted by this invention to solve its technical problem is:

[0005] A wear-resistant tapered roller bearing includes an inner ring, the outer circumferential surface of which is tapered, and the inner circumferential surface of the outer ring is tapered. Multiple tapered rollers are disposed between the inner and outer rings. Multiple inserts are arranged in a ring on the outer ring, and each insert is rotatably connected to a shaft. Each shaft is fixed with a roller. The rollers are disposed on the left side of the outer ring, and the rollers block the left side of the inner ring to prevent the inner ring from detaching from the outer ring.

[0006] Two flanges are provided on the outer circumferential surface of the inner ring, and the two flanges respectively block the two sides of the multiple tapered rollers.

[0007] A retainer is provided between the inner ring and the outer ring, and the retainer is provided with multiple through holes, with multiple tapered rollers inserted into the multiple through holes respectively.

[0008] The inserts extend through the outer ring on both sides, and each insert has a stop pin inserted at its right end, which blocks the right side of the outer ring.

[0009] A ring plate is connected to the right side of the outer ring, and multiple balls are arranged between the left side of the ring plate and the right side of the inner ring.

[0010] The inner ring has a ball groove one on the right side and a ball groove two on the left side of the ring plate, with multiple balls located between the ball groove one and the ball groove two.

[0011] The ring plate is fixed with multiple side lugs in a ring shape. Each side lug is fixed with a screw. The screw passes through the outer ring from both sides. The left end of each screw is connected to a nut by a thread, and the nut is blocked on the left side of the outer ring.

[0012] The inner ring has two V-shaped clamps on its inner side, two fixed seats on its inner ring, and a fixed frame on its inner ring, with the fixed frame located between the two fixed seats. L-shaped frames are fixed to the outer sides of both V-shaped clamps, and the two L-shaped frames are slidably connected to the two fixed seats. The middle part of the double-threaded screw is rotatably connected to the fixed frame, and a hexagonal screw head is fixed to the middle part of the fixed frame, located inside the fixed frame. Two limiting rings are fixed to the double-threaded screw, and the two limiting rings are respectively fitted to the two sides of the fixed frame. The front and rear parts of the double-threaded screw have opposite thread directions, and the front and rear ends of the double-threaded screw are respectively engaged with the two L-shaped frames through threads.

[0013] Four threaded posts 1 are fixed on the left side of the inner ring. Each fixing seat is connected to two threaded posts 1 on the same side. Two threaded posts 2 are fixed on the left side of the inner ring. The fixing bracket is connected to the two threaded posts 2. Nuts are threadedly connected to both threaded posts 1 and threaded posts 2.

[0014] A preparation apparatus for manufacturing wear-resistant tapered rollers includes a portal frame with square columns slidably connected to both ends of the portal frame. Clamping claws are fixed to the opposite ends of the two square columns. The two square columns are driven to slide by hydraulic cylinders. Side shafts are fixed to both the front and rear sides of the portal frame. The two side shafts are rotatably connected to the front and rear ends of the base frame, respectively. A motor is fixed on the portal frame. The output shaft of the motor is connected to one of the side shafts through a coupling. The two clamping claws can clamp the outer circumference of the outer ring.

[0015] The beneficial effects of the wear-resistant tapered roller bearing and its preparation apparatus of the present invention are as follows:

[0016] The beneficial effects of the wear-resistant tapered roller bearing and its preparation apparatus of the present invention are as follows:

[0017] I. Beneficial Effects of the Bearing Body Core

[0018] Significantly improved anti-detachment performance: The left-side limiting structure, consisting of inserts, shafts, and rollers distributed in a ring on the outer ring, combined with the auxiliary support of the right-side ring plate and balls, forms a two-way axial limiting system. This completely solves the problem that traditional elastic retaining rings and simple retaining edges are prone to twisting and breaking under large axial forces, effectively preventing the inner and outer rings from separating and ensuring operational safety under harsh conditions such as heavy loads, high speeds, vibrations, and impacts.

[0019] Comprehensive optimization of wear resistance: The close rolling fit between the tapered rollers and the inner and outer ring tapered surfaces, combined with the point contact design of the balls, transforms sliding friction into rolling friction, significantly reducing contact wear; the uniform separation of the tapered rollers by the cage avoids collision friction between the rollers and reduces local stress concentration; at the same time, the balls share the axial load, reduce the stress load on the tapered rollers, slow down the wear rate of the contact surface, and significantly extend the overall service life of the bearing.

[0020] High adaptability and versatility: The combination structure of the double-threaded lead screw and V-shaped clamp on the inner side of the inner ring can flexibly adjust the clamping distance by rotating the hexagonal rotating head to adapt to mounting shafts of different thicknesses. Combined with the self-centering characteristics of the V-shaped structure, it ensures the coaxiality and connection stability of the bearing and the shaft, realizing the adaptation of the same bearing to multiple specifications of shafts and reducing equipment adaptation costs.

[0021] II. Beneficial Effects of the Preparation Device

[0022] The preparation device uses a hydraulic cylinder to drive the clamping claws to securely hold the outer ring. The motor drives the gantry frame to rotate synchronously with the outer ring, ensuring that the outer ring is subjected to uniform force and rotates smoothly during the wear-resistant layer spraying and surface grinding processes. This ensures consistent machining surface accuracy and provides a reliable guarantee for the wear resistance and structural stability of the bearing body. At the same time, the device has a simple structure, is easy to operate, and can be adapted to the processing of outer rings of different specifications, improving production efficiency and product consistency. Attached Figure Description

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0024] Figure 1 This is a schematic diagram of the structure of a wear-resistant tapered roller bearing and its preparation device;

[0025] Figure 2 This is a schematic diagram of the preparation device;

[0026] Figure 3 A schematic diagram of the structure of a wear-resistant tapered roller bearing. Figure 1 ;

[0027] Figure 4 A schematic diagram of the structure of a wear-resistant tapered roller bearing. Figure 2 ;

[0028] Figure 5 Schematic diagram of the inner ring structure Figure 1 ;

[0029] Figure 6 Schematic diagram of the inner ring structure Figure 2 ;

[0030] Figure 7 This is a schematic diagram of the structure of a tapered roller;

[0031] Figure 8 Schematic diagram of the outer ring structure Figure 1 ;

[0032] Figure 9 Schematic diagram of the outer ring structure Figure 2 ;

[0033] Figure 10 Schematic diagram of the ring plate structure Figure 1 ;

[0034] Figure 11 Schematic diagram of the ring plate structure Figure 2 ;

[0035] Figure 12 Schematic diagram of V-shaped clamp. Figure 1 ;

[0036] Figure 13 Schematic diagram of V-shaped clamp. Figure 2 .

[0037] In the diagram: Inner ring 101; Threaded post one 102; Threaded post two 103; Flange 104; Ball groove one 105;

[0038] Tapered roller 201; cage 202;

[0039] Outer ring 301; Insert bar 302; Shaft 303; Roller 304; Stop pin 305;

[0040] Ring plate 401; Side lug 402; Screw 403; Ball bearing 404; Ball groove 2 405;

[0041] V-shaped clamp 501; L-shaped bracket 502; fixed base 503; double threaded screw 504; hexagonal screw head 505; limit ring 506; fixed bracket 507;

[0042] 601. Portal frame; 602. Motor; 603. Side shaft; 604. Square column; 605. Clamping claw; 606. Base frame. Detailed Implementation

[0043] A wear-resistant tapered roller bearing includes an inner ring 101, the outer circumferential surface of the inner ring 101 being a tapered surface, and the inner circumferential surface of an outer ring 301 being a tapered surface. A plurality of tapered rollers 201 are disposed between the inner ring 101 and the outer ring 301. A plurality of inserts 302 are arranged in a ring on the outer ring 301. A rotating shaft 303 is rotatably connected to each insert 302. A roller 304 is fixed on each rotating shaft 303. The rollers 304 are disposed on the left side of the outer ring 301 and block the left side of the inner ring 101 to prevent the inner ring 101 from detaching from the outer ring 301.

[0044] like Figures 3-9 As shown;

[0045] The tapered structure of the inner ring 101 and the outer ring 301 is adapted to provide a close rolling contact surface for the tapered rollers 201, enabling the bearing to withstand both radial and axial loads simultaneously. The annularly distributed inserts 302 on the outer ring 301 provide mounting support for the shaft 303, which drives the rollers 304 to rotate freely. When the bearing is operating, the inner ring 101 rotates with the shaft, and its left end face makes rolling contact with multiple rollers 304. The rollers 304 physically restrict the axial displacement of the inner ring 101, preventing it from detaching from the outer ring 301 under axial force or vibration conditions. Simultaneously, the rolling contact reduces frictional loss, ensuring smooth bearing operation.

[0046] Two flanges 104 are provided on the outer circumferential surface of the inner ring 101, and the two flanges 104 respectively block the two sides of the multiple tapered rollers 201.

[0047] like Figures 5-7 As shown;

[0048] The two flanges 104 on the outer circumference of the inner ring 101 form an axial limiting space. During the rolling process of the tapered roller 201, the flanges 104 on both sides can directly prevent the tapered roller 201 from generating excessive axial movement. This structure ensures that the tapered roller 201 always remains in the effective contact area between the inner and outer ring tapered surfaces, avoiding uneven force and accelerated wear caused by roller misalignment, while also preventing the roller from falling out of the gap between the inner and outer rings, thus ensuring the stability of the bearing transmission.

[0049] A retainer 202 is provided between the inner ring 101 and the outer ring 301. The retainer 202 is provided with multiple through holes, and multiple tapered rollers 201 are respectively inserted into the multiple through holes.

[0050] like Figures 3-9 As shown;

[0051] The cage 202 independently positions multiple tapered rollers 201 through through holes, ensuring that the tapered rollers 201 are evenly distributed along the outer circumference of the inner ring 101. During operation, the cage 202 moves synchronously with the tapered rollers 201, preventing collisions and friction between the rollers, reducing energy loss and surface wear. Simultaneously, the evenly distributed rollers ensure that the load is evenly transferred to each contact point, reducing localized stress concentration, improving the overall bearing capacity and service life, and ensuring smooth operation during rotation.

[0052] The insert 302 extends through the outer ring 301 from left to right. Each insert 302 has a stop pin 305 inserted at its right end, which blocks the outer ring 301 on the right side.

[0053] like Figures 8-9 As shown;

[0054] The design of the insert 302 penetrating the outer ring 301 on both sides facilitates installation and removal from the outside, while ensuring the stability of the connection between the insert 302 and the outer ring 301. The retaining pin 305 inserted at the right end of the insert 302 forms an axial limit from the right side of the outer ring 301, preventing the insert 302 from axially displacing or falling off due to vibration, centrifugal force, or other factors during bearing operation. This ensures the stability of the installation position of the rotating shaft 303 and the roller 304, and guarantees the continued effectiveness of their anti-detachment function on the middle ring 101.

[0055] The outer ring 301 is connected to the right side of a ring plate 401, and a plurality of balls 404 are arranged between the left side of the ring plate 401 and the right side of the inner ring 101.

[0056] like Figures 3-11 As shown;

[0057] The ring plate 401 connected to the right side of the outer ring 301 and the right side of the inner ring 101 form a two-way support structure. The multiple balls 404 set between them can not only share the axial load borne by the tapered roller 201, but also replace sliding friction with rolling friction, which can significantly reduce the contact wear between the inner ring 101 and the ring plate 401 and indirectly improve the overall wear resistance of the bearing.

[0058] From the perspective of wear resistance mechanism, the spherical structure of the ball 404 makes the contact points distributed in a point-like manner, which reduces the friction area, lowers the pressure per unit area, and avoids excessive local wear. At the same time, the rolling fit between the ball 404 and the inner ring 101 and the ring plate 401 can reduce the friction loss caused by relative motion. Compared with the traditional sliding contact structure, it can effectively slow down the wear rate of the contact surface and extend the service life of the bearing.

[0059] In addition, by sharing the axial load, this structure can reduce the stress on the tapered roller 201, prevent the tapered roller 201 from being overloaded and causing accelerated surface wear, further ensuring the wear resistance and stability of the bearing. This allows the bearing to maintain good wear resistance under harsh conditions such as heavy load, high speed, vibration and impact, and reduces the risk of inner and outer ring separation due to wear.

[0060] The inner ring 101 has a ball groove 105 on the right side and a ball groove 405 on the left side of the ring plate 401. Multiple balls 404 are located between the ball groove 105 and the ball groove 405.

[0061] like Figures 3-11 As shown;

[0062] The ball groove 105 of the inner ring 101 and the ball groove 405 of the ring plate 401 cooperate with each other to form an annular limiting channel for the ball 404. During operation, the ball 404 can only roll within the space formed by the two grooves, preventing radial displacement or dislodgement of the ball 404 and ensuring that the ball 404 is always in close contact with the groove, thus guaranteeing the accuracy and stability of axial force transmission. The groove structure also reduces the contact area between the ball 404 and the contact surface, reducing friction loss and improving rolling efficiency.

[0063] The ring plate 401 has multiple side lugs 402 fixed in a ring shape. Each side lug 402 is fixed with a screw 403. The screw 403 passes through the outer ring 301 on both sides. The left end of each screw 403 is connected to a nut by a thread, and the nut is blocked on the left side of the outer ring 301.

[0064] like Figures 8-11 As shown;

[0065] The ring plate 401 is fixed by a screw 403 through the side lugs 402, which passes through the outer ring 301. The nut at the left end of the screw is pressed and fixed to the left end face of the outer ring 301, achieving a detachable connection between the ring plate 401 and the outer ring 301. This connection method allows adjustment of the tightness of the nut to control the gap between the ring plate 401 and the inner ring 101, thereby controlling the preload of the balls 404 and ensuring the effective contact between the balls 404 and the groove. At the same time, the multiple annularly distributed side lugs 402 and screws 403 ensure that the ring plate 401 is subjected to uniform force, preventing installation misalignment and ensuring the normal operation of the auxiliary rolling structure.

[0066] The inner ring 101 has two V-shaped clamps 501 on its inner side, two fixed seats 503 fixed on the inner ring 101, and a fixed frame 507 fixed on the inner ring 101. The fixed frame 507 is located between the two fixed seats 503. L-shaped frames 502 are fixed on the outer sides of the two V-shaped clamps 501. The two L-shaped frames 502 are slidably connected to the two fixed seats 503 respectively. The middle part of the double threaded screw 504 is rotatably connected to the fixed frame 507. A hexagonal screw head 505 is fixed in the middle part of the fixed frame 507. The hexagonal screw head 505 is located inside the fixed frame 507. Two limiting rings 506 are fixed on the double threaded screw 504. The two limiting rings 506 are respectively attached to the two sides of the fixed frame 507. The front and rear threads of the double threaded screw 504 have opposite directions. The front and rear ends of the double threaded screw 504 are respectively engaged with the two L-shaped frames 502 through threads.

[0067] like Figures 3-13 As shown;

[0068] The core function of the V-shaped clamp 501 on the inner side of the inner ring 101 is to achieve the compatibility and clamping of the bearing with mounting shafts of different specifications. Its structure ensures connection stability through mechanical transmission and limit design. The fixed seat 503 provides precise sliding guidance for the L-shaped frame 502, so that the L-shaped frame 502 can drive the V-shaped clamp 501 to move smoothly only radially, avoiding deviation during clamping. The fixed frame 507 serves as the mounting reference for the double-threaded screw 504. The hexagonal head 505 on its inner side provides a force point for adjustment. When it is necessary to adapt to mounting shafts of different thicknesses, the double-threaded screw 504 can be directly driven to rotate synchronously by rotating the hexagonal head 505 with a tool.

[0069] Since the two sections of the double-threaded screw 504 have opposite threads and form threaded engagements with the two L-shaped brackets 502 respectively, the rotational motion of the screw can be converted into the opposite linear motion of the two L-shaped brackets 502: when the hexagonal screw head 505 is rotated clockwise, the two reverse threads will drive the L-shaped brackets 502 to move synchronously towards each other, causing the two V-shaped clamps 501 to move closer to each other, reducing the clamping distance to accommodate thinner mounting shafts; when rotated counterclockwise, the L-shaped brackets 502 move synchronously in the opposite direction, increasing the clamping distance to accommodate thicker mounting shafts.

[0070] The two limiting rings 506 on the double-threaded screw 504 are tightly fitted to both sides of the fixed frame 507, which can strictly limit the axial movement of the screw itself, ensure stable force during thread transmission, avoid jamming or displacement deviation, and ensure the movement accuracy of the V-shaped clamp 501. At the same time, the V-shaped structure has self-centering characteristics, which can automatically calibrate the coaxiality of the bearing and the mounting shaft during clamping. Combined with the self-locking function of the thread transmission, it can keep the clamping state stable. Even when the bearing is running at high speed or under vibration and impact loads, it can effectively prevent relative sliding with the mounting shaft, ultimately achieving a firm fit of the same bearing for mounting shafts of various specifications.

[0071] Four threaded posts 102 are fixed on the left side of the inner ring 101. Each fixing seat 503 is connected to two threaded posts 102 on the same side. Two threaded posts 203 are fixed on the left side of the inner ring 101. The fixing bracket 507 is connected to the two threaded posts 203. Nuts are threadedly connected to both the threaded posts 102 and the threaded posts 203.

[0072] like Figures 3-13 As shown;

[0073] The first threaded post 102 on the left side of the inner ring 101 provides mounting support for the fixed seat 503, and the second threaded post 103 provides mounting support for the fixed bracket 507. The fixed seat 503 and the fixed bracket 507 are pressed and fixed onto the inner ring 101 by the threaded connection between the nut and the threaded post. This fixing method is simple in structure and easy to disassemble, ensuring that the fixed seat 503 and the fixed bracket 507 do not shift during bearing operation, thus guaranteeing the clamping stability of the V-shaped clamp 501. Simultaneously, the distributed design of multiple threaded posts ensures that the fixed seat and fixed bracket are subjected to uniform force, improving the overall load-bearing strength of the structure.

[0074] A wear-resistant tapered roller bearing and a preparation apparatus for manufacturing wear-resistant tapered rollers are disclosed. The preparation apparatus includes a portal frame 601, with square columns 604 slidably connected to both ends of the portal frame 601. Clamping claws 605 are fixed to the opposite ends of the two square columns 604. The two square columns 604 are driven to slide by hydraulic cylinders. Side shafts 603 are fixed to both sides of the portal frame 601. The two side shafts 603 are rotatably connected to the front and rear ends of the base frame 606, respectively. A motor 602 is fixed on the portal frame 601. The output shaft of the motor 602 is connected to one of the side shafts 603 through a coupling. The two clamping claws 605 can clamp the outer circumference of the outer ring 301.

[0075] like Figures 1-2 As shown;

[0076] In the manufacturing apparatus, the base frame 606 provides rotational support for the portal frame 601 via the side shaft 603. During operation, the hydraulic cylinder drives the square columns 604 at both ends of the portal frame 601 to move towards each other, causing the two clamping jaws 605 to clamp the outer circumferential surface of the outer ring 301, thus fixing the outer ring 301. The motor 602 drives the side shaft 603 to rotate via a coupling, thereby causing the portal frame 601 and the clamped outer ring 301 to rotate synchronously, ensuring a uniform processing effect for the outer ring 301 during processing, such as wear-resistant layer spraying and surface grinding. This device, through mechanical clamping and rotary drive, ensures the accuracy and consistency of the outer ring processing, providing a guarantee for the overall performance of the wear-resistant tapered roller bearing.

Claims

1. A wear-resistant tapered roller bearing comprising an inner ring (101), characterized in that: The outer peripheral surface of the inner ring (101) is a conical surface, the inner peripheral surface of the outer ring (301) is a conical surface, a plurality of tapered rollers (201) are arranged between the inner ring (101) and the outer ring (301), a plurality of insertion strips (302) are arranged in a ring shape on the outer ring (301), a rotating shaft (303) is rotatably connected to each of the plurality of insertion strips (302), a roller (304) is fixed to each rotating shaft (303), the plurality of rollers (304) are arranged on the left side of the outer ring (301), and the rollers (304) are arranged on the left side of the inner ring (101) to prevent the inner ring (101) from being separated from the outer ring (301).

2. A wear-resistant tapered roller bearing according to claim 1, characterized in that: Two stop edges (104) are arranged on the outer peripheral surface of the inner ring (101), and the two stop edges (104) are arranged on the two sides of the plurality of tapered rollers (201), respectively.

3. A wear-resistant tapered roller bearing according to claim 2, characterized in that: A retainer (202) is arranged between the inner ring (101) and the outer ring (301), the retainer (202) is provided with a plurality of through holes, and the plurality of tapered rollers (201) are inserted into the plurality of through holes, respectively.

4. A wear-resistant tapered roller bearing according to claim 3, characterized in that: The insertion strip (302) penetrates the outer ring (301) left and right, and a stop pin (305) is inserted into the right end of each insertion strip (302), and the stop pin (305) is arranged on the right side of the outer ring (301).

5. A wear-resistant tapered roller bearing according to claim 4, characterized in that: The right side of the outer ring (301) is connected with a ring plate (401), and a plurality of rolling balls (404) are arranged between the left side of the ring plate (401) and the right side of the inner ring (101).

6. A wear-resistant tapered roller bearing according to claim 5, characterized in that: The right side of the inner ring (101) is provided with a rolling ball groove one (105), the left side of the ring plate (401) is provided with a rolling ball groove two (405), and the plurality of rolling balls (404) are located between the rolling ball groove one (105) and the rolling ball groove two (405).

7. A wear-resistant tapered roller bearing according to claim 6, characterized in that: A plurality of side ears (402) are fixed in a ring shape on the ring plate (401), a screw rod (403) is fixed on each side ear (402), the screw rod (403) penetrates the outer ring (301) left and right, a nut is threadedly connected to the left end of each screw rod (403), and the nut is arranged on the left side of the outer ring (301).

8. A wear-resistant tapered roller bearing according to claim 7, characterized in that: The inner side of the inner ring (101) is provided with two V-shaped clamping plates (501), two fixed seats (503) are fixed on the inner ring (101), a fixed frame (507) is fixed on the inner ring (101), the fixed frame (507) is located between the two fixed seats (503), the outer sides of the two V-shaped clamping plates (501) are fixed with L-shaped frames (502), the two L-shaped frames (502) are slidingly connected to the two fixed seats (503), respectively, the middle part of the double-threaded lead screw (504) is rotatably connected to the fixed frame (507), the middle part of the fixed frame (507) is fixed with a hexagonal rotating head (505), the hexagonal rotating head (505) is located on the inner side of the fixed frame (507), two limiting rings (506) are fixed on the double-threaded lead screw (504), the two limiting rings (506) are respectively attached to the two sides of the fixed frame (507), the thread directions of the front and rear parts of the double-threaded lead screw (504) are opposite, and the front and rear ends of the double-threaded lead screw (504) are threadedly connected with the two L-shaped frames (502), respectively.

9. A wear-resistant tapered roller bearing according to claim 8, characterized in that: Four threaded columns one (102) are fixed on the left side of the inner ring (101), each fixed seat (503) is connected on two threaded columns one (102) on the same side, two threaded columns two (103) are fixed on the left side of the inner ring (101), the fixed frame (507) is connected on the two threaded columns two (103), the threaded columns one (102) and the threaded columns two (103) are all connected with nuts through threads.

10. A wear-resistant tapered roller bearing according to claim 9, characterized in that: The preparation device for preparing wear-resistant conical rollers comprises a door-shaped frame (601), square columns (604) are slidably connected to the front and rear ends of the door-shaped frame (601), clamping claws (605) are fixed to the opposite ends of the two square columns (604), the two square columns (604) are driven to slide through hydraulic cylinders, side shafts (603) are fixed to the front and rear sides of the door-shaped frame (601), the two side shafts (603) are rotatably connected to the front and rear ends of a base frame (606), a motor (602) is fixed to the door-shaped frame (601), the output shaft of the motor (602) is connected to one of the side shafts (603) through a shaft coupling, and the two clamping claws (605) can be clamped to the outer periphery of an outer ring (301).

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