A new type of universal joint bearing

Abstract

The application discloses a novel universal joint bearing and relates to the technical field of bearings. The novel universal joint bearing comprises a main body assembly and a bearing assembly arranged on the main body assembly, an oil supply assembly for supplying oil is arranged on the main body assembly, a docking assembly and a sealing assembly are arranged on the bearing assembly, the main body assembly comprises a cross shaft body, a plurality of connecting pipes are fixedly connected to the cross shaft body, and the bearing assembly is arranged on the connecting pipes. Two universal joint U-shaped insertion frames are connected to the connecting pipes in opposite positions, needle rollers arranged on the connecting pipes provide bearing lubrication when the cross shaft body, the connecting pipes and the two universal joint U-shaped insertion frames rotate, the oil supply assembly arranged on the cross shaft body fills the oil storage groove with lubricating substances, the lubricating substances enter the connecting pipes through the oil supply grooves and flow out through the through holes, and the lubricating substances contact and lubricate the needle rollers, so that single-point oil injection and global lubrication are realized.

Description

A new type of universal joint bearing Technical Field

[0001] This invention relates to the field of bearing technology, specifically to a novel universal joint bearing. Background Technology

[0002] Universal joint bearings, also known as universal joints or spherical plain bearings, are mechanical components used to transmit rotational motion while allowing angular deviation. They typically consist of two forked arms and a central cross shaft connecting the bearing housings at both ends, allowing the two shafts to rotate relative to each other within a certain range and maintain transmission. Common types include single-direction universal joints, which are used to connect two shafts and transmit torque when deflected at any angle. The disadvantage is that the transmission efficiency will fluctuate periodically when the angle changes, resulting in speed fluctuations. Double universal joints and equivalent universal joints, by connecting two universal joints in series and adding a coaxial component with a fixed angle in the middle, eliminate the speed difference problem of single universal joints when the angle changes, improve transmission smoothness, and are often used in high-end applications in transmission systems.

[0003] A universal joint bearing with improved sealing effect, disclosed in patent publication number CN119288981A, involves adding lubricating oil to the outer circumference of the shaft or several rollers, followed by fitting a bushing onto the shaft. During fitting, the side sealing lip first presses against the inner surface of the sleeve oil seal, sealing the gap between the circumference of the shaft oil seal and the sleeve oil seal. After the bushing is fully fitted onto the shaft, the upper sealing lip presses against the lower surface of the sleeve oil seal, sealing the gap between the shaft oil seal and the sleeve oil seal. The sleeve sealing lip presses against the side end face of the shaft, sealing the gap between the sleeve oil seal and the shaft. The convex ring presses against the lower end face of the bushing, sealing the gap between the lower end face of the bushing and the upper surface of the shaft oil seal. This quadruple sealing structure effectively seals the gap between the bushing and the shaft, improving the sealing effect between them.

[0004] In the use of the above and similar technical solutions, traditional universal joints require manual and periodic application of grease using a grease gun. For large equipment such as commercial vehicles and construction machinery, operators often need to work at heights, posing safety hazards. At the same time, manual application cannot accurately control the amount injected. Insufficient grease will lead to insufficient lubrication and accelerated wear, while excessive grease will cause grease to overflow and contaminate the chassis and surrounding parts, increasing maintenance costs. In addition, grease is difficult to evenly cover all contact surfaces of the four sets of needle roller bearings on the cross shaft. Some needle rollers are in a state of insufficient lubrication for a long time, which accelerates the early wear rate and easily leads to looseness and abnormal noise in the universal joint, reducing the overall transmission accuracy. Summary of the Invention

[0005] The purpose of this invention is to provide a novel universal joint bearing to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a novel universal joint bearing, comprising a main body assembly and a bearing assembly disposed on the main body assembly, wherein the main body assembly is provided with an oil supply assembly for oil supply, and the bearing assembly is provided with a docking assembly and a sealing assembly, wherein the main body assembly comprises a cross shaft body, wherein a plurality of connecting pipes are fixedly connected to the cross shaft body, and the bearing assembly is disposed on the connecting pipes;

[0007] The cross shaft body has an oil storage tank inside, and the connecting pipe has an oil supply tank inside. The oil storage tank and the oil supply tank are connected. The docking assembly includes a rotating plate, which is in sealed contact with the connecting pipe. A rolling assembly is provided on the rotating plate. The bearing assembly includes multiple needle rollers, which are provided on the outer wall of the connecting pipe. The connecting pipe has multiple through holes that communicate with the oil supply tank.

[0008] Two universal joint U-shaped brackets are connected to connecting pipes in opposite positions. The needle rollers on the connecting pipes provide bearing lubrication when the cross shaft body, connecting pipes and two universal joint U-shaped brackets rotate. The oil supply component on the cross shaft body fills the oil reservoir with lubricant. The lubricant enters each connecting pipe through the oil supply reservoir and flows out through the through hole, contacting and lubricating the needle rollers, thereby achieving single-point oil injection and global lubrication.

[0009] The rolling assembly includes a wobbling ball, which is disposed in an oil supply groove. A limit ring is fixedly connected in the oil supply groove. When the cross shaft body and the connecting pipe rotate, when the connecting pipe is in the upper position, the wobbling ball falls from the docking pin to the limit ring in the oil supply groove. When the connecting pipe is in the lower position, the wobbling ball falls from the limit ring to the docking pin in the oil supply groove, thereby accelerating the flow rate of the lubricant in the oil supply groove.

[0010] The connecting pipe has multiple inner grooves, which are symmetrically distributed in an L-shape. When the shaking ball falls from the limiting ring to the docking pin in the oil supply groove, some of the lubricant accumulated on the docking pin flows through the inner grooves toward the limiting ring, further accelerating the flow rate of the lubricant in the oil supply groove.

[0011] Furthermore, the oil supply assembly includes an oil reservoir with multiple fixing lugs, which is fixed to the cross shaft body. A delivery pump is mounted on the cross shaft body, and an oil supply pipe connects the delivery pump to the oil reservoir. A battery assembly and a sensor assembly are fixedly connected to the cross shaft body, and the battery assembly, delivery pump, and sensor assembly are electrically connected. A supply pipe is provided on the oil reservoir. The sensor assembly can be a Hall effect sensor. During the rotation of the cross shaft body, the sensor assembly receives an electrical signal for each revolution of the cross shaft body. By statistically analyzing the electrical signal data received by the sensor assembly, and based on a set quantitative value, after the sensor assembly has rotated a fixed number of revolutions, the delivery pump is driven to deliver a quantitative amount of lubricant. This achieves the effect of quantitative lubrication based on the actual number of revolutions of the universal joint bearing. The supply pipe replenishes the lubricant in the oil reservoir, and the fixing lugs secure the oil reservoir to the cross shaft body, making assembly and disassembly convenient.

[0012] Furthermore, the bearing assembly also includes a positioning bracket, which is an annular structure with multiple rotating grooves. The needle rollers are rotatably connected within these grooves, and an outer sleeve is fitted onto each needle roller. The inner circumferential wall of the outer sleeve has rotating grooves that are adapted to the needle rollers. In use, the needle rollers are sequentially placed into the positioning bracket, and the positioning bracket is then placed into the outer sleeve. At this time, all the needle rollers are inserted into the rotating grooves and are limited by the positioning bracket, causing them to adhere to the rotating grooves, i.e., the inner wall of the outer sleeve. The needle rollers are fitted onto the outer wall of the connecting pipe, allowing the outer sleeve to rotate relative to the connecting pipe under the action of the needle rollers, thus achieving a omnidirectional rotation effect.

[0013] Furthermore, the sealing assembly includes a first fixing ring and a second fixing ring. The first fixing ring is fixedly connected to the connecting pipe, and a first sealing ring is fixedly connected to the first fixing ring. A second sealing ring is fixedly connected to the second fixing ring. Both the first and second sealing rings are inserted between the outer sleeve and the positioning bracket. Since the first fixing ring is fixedly connected to the connecting pipe, it can limit the movement of the outer sleeve and the positioning bracket during installation, ensuring that the installation positions of the outer sleeve and the positioning bracket are correct. At this time, the first sealing ring will be directly inserted between the outer sleeve and the positioning bracket. Then, the second fixing ring is installed from top to bottom, and the second sealing ring is inserted between the outer sleeve and the positioning bracket, thereby sealing the space between the outer sleeve and the positioning bracket and preventing dust from entering.

[0014] Furthermore, each of the rotating plates is fixedly connected with a mating pin, which is in threaded contact with the connecting pipe. When the rotating plate is rotated, the mating pins allow for sealed assembly and disassembly of the rotating plate.

[0015] Furthermore, a buffer plate is inserted into the oil supply groove, and a buffer spring is fixedly connected between the buffer plate and the docking pin. A connecting rope is fixedly connected between the shaking ball and the buffer plate. When the shaking ball slides in the oil supply groove, the connecting rope is used to limit the shaking ball and prevent the shaking ball from making noise due to hitting the limiting ring. When the shaking ball contacts the buffer plate, the buffer spring provides a reverse elastic force to the shaking ball, thereby improving the shaking performance of the shaking ball.

[0016] Furthermore, the buffer spring and buffer plate are replaced with a first counter-impact plate, the shaking ball and connecting rope are replaced with a moving ball, and the limiting ring is replaced with a counter-impact ring. The first counter-impact plate, moving ball, and counter-impact ring are made of the same magnetic material, and an isolation sleeve is provided inside the connecting pipe. Since the first counter-impact plate, moving ball, and counter-impact ring are made of the same magnetic material, the moving ball will be subjected to magnetic counter-impact from the first counter-impact plate and counter-impact ring when it moves in the oil supply groove, further reducing the noise generated when the moving ball moves. The isolation sleeve is used to isolate the magnetic interference between the first counter-impact plate, moving ball, counter-impact ring, and connecting pipe.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This new type of universal joint bearing has two universal joint U-shaped brackets connected to connecting pipes in opposite positions. The needle rollers on the connecting pipes provide bearing lubrication when the cross shaft body, the connecting pipes, and the two universal joint U-shaped brackets rotate. The oil supply component on the cross shaft body fills the oil reservoir with lubricant. The lubricant enters each connecting pipe through the oil supply reservoir and flows out through the through hole, contacting and lubricating the needle rollers, thereby achieving single-point oil injection and global lubrication.

[0019] Meanwhile, the sensor assembly can be a Hall sensor. During the rotation of the cross shaft body, the sensor assembly can receive an electrical signal once for each rotation of the cross shaft body. By statistically analyzing the electrical signal data received by the sensor assembly, and based on the set quantitative value, after the sensor assembly has rotated a fixed number of times, the delivery pump is driven to deliver the lubricant in a quantitative manner, thereby achieving the effect of quantitative lubrication based on the actual number of rotations of the universal joint bearing.

[0020] Furthermore, when the cross shaft body and connecting pipe rotate, when the connecting pipe is at the top, the wobbling ball falls from the mating pin to the limiting ring in the oil supply groove; when the connecting pipe is at the bottom, the wobbling ball falls from the limiting ring to the mating pin in the oil supply groove, accelerating the flow rate of lubricant in the oil supply groove. When the wobbling ball falls from the limiting ring to the mating pin in the oil supply groove, some of the lubricant accumulated on the mating pin flows through the inner groove towards the limiting ring, further accelerating the flow rate of lubricant in the oil supply groove. When the wobbling ball slides in the oil supply groove, the connecting rope is used to limit the wobbling ball, preventing the wobbling ball from making noise due to hitting the limiting ring. When the wobbling ball contacts the buffer plate, the buffer spring provides a reverse elastic force to the wobbling ball, improving the wobbling ball's wobbling performance. Attached Figure Description

[0021] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 is a schematic diagram of the oil supply component structure of the present invention;

[0023] Figure 3 is a schematic cross-sectional view of the overall structure of the present invention;

[0024] Figure 4 is a schematic diagram of the internal structure of the connecting pipe of the present invention;

[0025] Figure 5 is a schematic diagram of the positioning bracket and needle roller structure of the present invention;

[0026] Figure 6 is a schematic diagram of the shaking ball structure of the present invention;

[0027] Figure 7 is a schematic cross-sectional view of the connecting pipe of the present invention;

[0028] Figure 8 is a schematic diagram of the moving ball structure of the present invention.

[0029] In the diagram: 1. Main component; 101. Cross shaft body; 102. Connecting pipe; 103. Oil supply tank; 104. Oil storage tank; 2. Oil supply assembly; 201. Oil storage box; 202. Supply pipe; 203. Fixing lug; 204. Delivery pump; 205. Battery assembly; 206. Sensor assembly; 3. Bearing assembly; 301. Outer sleeve; 302. Positioning bracket; 303. Needle roller; 4. Docking assembly; 401. Rotating plate 402. Docking pin; 403. Buffer spring; 404. Buffer plate; 405. Connecting rope; 406. Shaking ball; 407. Limiting ring; 408. Through hole; 409. First counter-impact plate; 4010. Moving ball; 4011. Counter-impact ring; 4012. Isolation sleeve; 5. Sealing assembly; 501. First fixing ring; 502. First sealing ring; 503. Second fixing ring; 504. Second sealing ring; 6. Inner groove. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In the application of traditional universal joints in large equipment such as commercial vehicles and construction machinery, operators need to regularly apply grease using a grease gun. This process often involves working at heights, posing serious safety hazards. Furthermore, manual grease application makes it difficult to precisely control the amount injected; too little grease leads to insufficient lubrication and accelerated wear, while too much grease overflows, contaminating the chassis and surrounding components, increasing maintenance costs. More importantly, the complex cross-shaft structure of traditional universal joints, containing four sets of needle roller bearings, makes it difficult to ensure that the grease evenly covers all the contact surfaces of the needle roller bearings when manually applying grease. Some needle roller bearings, due to insufficient lubrication, remain in a state of dry or semi-dry friction for extended periods, leading to accelerated early wear. As wear intensifies, the universal joint exhibits looseness and abnormal noise, reduced transmission accuracy, and even malfunctions. This uneven lubrication problem is a significant cause of early universal joint failure. The inability of grease to evenly cover all the contact surfaces of the four sets of needle roller bearings on the cross-shaft results in some needle rollers being in a state of insufficient lubrication for extended periods, accelerating early wear, leading to looseness and abnormal noise in the universal joint, and ultimately reducing overall transmission accuracy.

[0032] Example 1, as shown in Figures 1-8, a novel universal joint bearing includes a main body assembly 1 and a bearing assembly 3 disposed on the main body assembly 1. The main body assembly 1 is provided with an oil supply assembly 2 for oil supply, and the bearing assembly 3 is provided with a docking assembly 4 and a sealing assembly 5. The main body assembly 1 includes a cross shaft body 101, on which multiple connecting pipes 102 are fixedly connected, and the bearing assembly 3 is disposed on the connecting pipes 102. An oil reservoir 104 is formed inside the cross shaft body 101, and an oil supply groove 103 is formed inside the connecting pipes 102. The oil reservoir 104 and the oil supply groove... The connecting assembly 4 includes a rotating plate 401, which is in sealed contact with the connecting pipe 102. A rolling assembly is provided on the rotating plate 401. The bearing assembly 3 includes multiple needle rollers 303, which are disposed on the outer wall of the connecting pipe 102. Multiple through holes 408 communicating with the oil supply groove 103 are opened on the connecting pipe 102. The rolling assembly includes a rocking ball 406, which is disposed in the oil supply groove 103. A limit ring 407 is fixedly connected in the oil supply groove 103. Multiple inner grooves 6 are opened in the connecting pipe 102. The inner grooves 6 are symmetrically distributed L-shaped structures.

[0033] It should be noted that when the cross shaft body 101 and the connecting pipe 102 rotate, when the connecting pipe 102 is in the upper position, the wobbling ball 406 falls from the docking pin 402 to the limiting ring 407 in the oil supply groove 103. When the connecting pipe 102 is in the lower position, the wobbling ball 406 falls from the limiting ring 407 to the docking pin 402 in the oil supply groove 103, accelerating the flow rate of the lubricant in the oil supply groove 103. When the wobbling ball 406 falls from the limiting ring 407 to the docking pin 402 in the oil supply groove 103, some of the lubricant accumulated on the docking pin 402 flows through the inner groove 6 towards the limiting ring 407, further accelerating the flow rate of the lubricant in the oil supply groove 103.

[0034] It should be noted that the two universal joint U-shaped brackets are respectively connected to the connecting pipes 102 in opposite positions. The needle rollers 303 set on the connecting pipes 102 provide bearing lubrication when the cross shaft body 101, the connecting pipes 102 and the two universal joint U-shaped brackets rotate. The oil supply component 2 set on the cross shaft body 101 fills the oil reservoir 104 with lubricant. The lubricant enters each connecting pipe 102 through the oil supply reservoir 103 and flows out through the through hole 408, contacting and lubricating the needle rollers 303, thereby achieving single-point oil injection for global lubrication.

[0035] As shown in Figure 2, the oil supply assembly 2 includes an oil storage box 201, which is provided with multiple fixing ears 203. The oil storage box 201 is fixed on the cross shaft body 101. A delivery pump 204 is provided on the cross shaft body 101. An oil delivery pipe is connected between the delivery pump 204 and the oil storage box 201. A battery assembly 205 and a sensor assembly 206 are fixedly connected to the cross shaft body 101. The battery assembly 205, the delivery pump 204 and the sensor assembly 206 are electrically connected. A supply pipe 202 is provided on the oil storage box 201.

[0036] It should be noted that the sensor assembly 206 can be a Hall sensor. During the rotation of the cross shaft body 101, the sensor assembly 206 can receive an electrical signal once for each rotation of the cross shaft body 101. By statistically analyzing the electrical signal data received by the sensor assembly 206, and based on the set quantitative value, after the sensor assembly 206 has rotated a fixed number of times, the delivery pump 204 is driven to deliver the lubricant in a quantitative manner. This achieves the effect of quantitative lubrication based on the actual number of rotations of the universal joint bearing. The lubricant can be replenished in the oil reservoir 201 through the supply pipe 202, and the oil reservoir 201 can be fixed on the cross shaft body 101 through the fixing lug 203, making it easy to install and remove.

[0037] As shown in Figure 5, the bearing assembly 3 also includes a positioning bracket 302, which is a ring structure with multiple rotating grooves. The needle roller 303 is rotatably connected in the rotating grooves. An outer sleeve 301 is sleeved on the needle roller 303. The inner circumference of the outer sleeve 301 has a rotating groove that is adapted to the needle roller 303.

[0038] It should be noted that during use, the needle rollers 303 are sequentially placed into the positioning bracket 302, and the positioning bracket 302 is placed into the outer sleeve 301. At this time, multiple needle rollers 303 will be inserted into the rotating groove, and due to the limiting effect of the positioning bracket 302, the needle rollers 303 are all in contact with the rotating groove, that is, the inner wall of the outer sleeve 301. The multiple needle rollers 303 are sleeved on the outer wall of the connecting tube 102. At this time, the outer sleeve 301 relative to the connecting tube 102 can rotate under the action of the needle rollers 303, thereby achieving the effect of universal rotation.

[0039] As shown in Figure 5, the sealing assembly 5 includes a first fixing ring 501 and a second fixing ring 503. The first fixing ring 501 is fixedly connected to the connecting pipe 102. A first sealing ring 502 is fixedly connected to the first fixing ring 501. A second sealing ring 504 is fixedly connected to the second fixing ring 503. Both the first sealing ring 502 and the second sealing ring 504 are inserted between the outer sleeve 301 and the positioning bracket 302.

[0040] It should be noted that since the first fixing ring 501 is fixedly connected to the connecting pipe 102, when installing the outer sleeve 301 and the positioning bracket 302, the first fixing ring 501 can limit the outer sleeve 301 and the positioning bracket 302 to ensure that the installation position of the outer sleeve 301 and the positioning bracket 302 is correct. At this time, the first sealing ring 502 will be directly inserted between the outer sleeve 301 and the positioning bracket 302. Then, the second fixing ring 503 is installed from top to bottom, and the second sealing ring 504 is inserted between the outer sleeve 301 and the positioning bracket 302 to seal the space between the outer sleeve 301 and the positioning bracket 302 and prevent dust from entering.

[0041] As shown in Figure 4, each rotating plate 401 is fixedly connected with a mating pin 402. The mating pin 402 and the connecting pipe 102 are in threaded contact. When the rotating plate 401 is rotated, the mating pin 402 can be used to seal and disassemble the rotating plate 401.

[0042] As shown in Figures 4 and 6, a buffer plate 404 is inserted into the oil supply tank 103, a buffer spring 403 is fixedly connected between the buffer plate 404 and the docking pin 402, and a connecting rope 405 is fixedly connected between the shaking ball 406 and the buffer plate 404.

[0043] It should be noted that when the shaking ball 406 slides in the oil supply groove 103, the connecting rope 405 is used to limit the shaking ball 406 to prevent the shaking ball 406 from making noise due to impact with the limiting ring 407. When the shaking ball 406 contacts the buffer plate 404, the buffer spring 403 provides a reverse elastic force to the shaking ball 406 to improve the shaking performance of the shaking ball 406.

[0044] In the second embodiment, as shown in Figure 8, the buffer spring 403 and the buffer plate 404 are replaced with the first counter-impact plate 409, the shaking ball 406 and the connecting rope 405 are replaced with the moving ball 4010, and the limiting ring 407 is replaced with the counter-impact ring 4011. The first counter-impact plate 409, the moving ball 4010, and the counter-impact ring 4011 are made of the same magnetic material, and an isolation sleeve 4012 is provided inside the connecting tube 102.

[0045] It should be noted that since the first counter-impact plate 409, the moving ball 4010, and the counter-impact ring 4011 are made of the same magnetic material, the moving ball 4010 will be subjected to magnetic counter-impact from the first counter-impact plate 409 and the counter-impact ring 4011 when it moves in the oil supply tank 103, which further reduces the noise generated when the moving ball 4010 moves. The isolation sleeve 4012 is used to isolate the magnetic interference between the first counter-impact plate 409, the moving ball 4010, the counter-impact ring 4011 and the connecting pipe 102.

[0046] It should be noted that when the needle rollers 303 are sequentially placed into the positioning bracket 302, and the positioning bracket 302 is placed into the outer sleeve 301, all the needle rollers 303 will be inserted into the rotating grooves. Due to the limiting effect of the positioning bracket 302, the needle rollers 303 will all fit against the rotating grooves. Since the needle rollers 303 are sleeved on the outer wall of the connecting pipe 102, the outer sleeve 301 can rotate relative to the connecting pipe 102 under the action of the needle rollers 303, thus achieving a universal rotation effect. The two universal joint U-shaped brackets are respectively connected to the connecting pipe 102 in opposite positions. The needle rollers 303 on the cross shaft body 101, connecting pipes 102, and two universal joint U-shaped brackets provide bearing lubrication when they rotate. The oil supply assembly 2 on the cross shaft body 101 fills the oil reservoir 104 with lubricant. The lubricant enters each connecting pipe 102 through the oil supply reservoir 103 and flows out through the through hole 408, contacting and lubricating the needle rollers 303, thus achieving single-point oil injection and global lubrication. The sensor assembly 206 can be a Hall sensor. During the rotation of the cross shaft body 101, the sensor assembly 206 can receive an electrical signal for each revolution of the cross shaft body 101. By statistically analyzing the electrical signal data received by the sensor assembly 206, and based on a set quantitative value, after the sensor assembly 206 rotates a fixed number of times, the delivery pump 204 is driven to quantitatively deliver the lubricant. When the cross shaft body 101 and the connecting pipe 102 rotate, when the connecting pipe 102 is in the upper position, the wobbling ball 406 falls from the docking pin 402 to the limiting ring 407 within the oil supply groove 103; when the connecting pipe 102 is in the lower position, the wobbling ball 406 falls from the limiting ring 407 to the docking pin 402 within the oil supply groove 103, accelerating the flow rate of the lubricant within the oil supply groove 103. 6. When the lubricant falls from the limiting ring 407 to the docking pin 402 in the oil supply groove 103, some of the lubricant accumulated on the docking pin 402 flows through the inner groove 6 towards the limiting ring 407, further accelerating the flow rate of the lubricant in the oil supply groove 103. When the shaking ball 406 slides in the oil supply groove 103, the connecting rope 405 is used to limit the shaking ball 406 to prevent the shaking ball 406 from making noise due to impacting the limiting ring 407. When the shaking ball 406 contacts the buffer plate 404, under the action of the buffer spring 403, it provides a reverse elastic force to the shaking ball 406, improving the shaking performance of the shaking ball 406.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A novel universal joint bearing, comprising a main body assembly (1) and a bearing assembly (3) disposed on the main body assembly (1), wherein the main body assembly (1) is provided with an oil supply assembly (2) for oil supply, and the bearing assembly (3) is provided with a mating assembly (4) and a sealing assembly (5), characterized in that: The main component (1) includes a cross shaft body (101), on which multiple connecting pipes (102) are fixedly connected, and a bearing assembly (3) is disposed on the connecting pipes (102); an oil storage groove (104) is opened inside the cross shaft body (101), and an oil supply groove (103) is opened inside the connecting pipes (102), the oil storage groove (104) and the oil supply groove (103) are connected, the docking component (4) includes a rotating plate (401), the rotating plate (401) is in sealed contact with the connecting pipes (102), a rolling assembly is disposed on the rotating plate (401), and the bearing assembly (3) includes multiple needle rollers. (303), needle rollers (303) are installed on the outer wall of the connecting pipe (102), and the connecting pipe (102) has multiple through holes (408) communicating with the oil supply groove (103); two universal joint U-shaped brackets are respectively connected to the connecting pipe (102) in opposite positions, and the needle rollers (303) installed on the connecting pipe (102) provide bearing lubrication when the cross shaft body (101), the connecting pipe (102) and the two universal joint U-shaped brackets rotate, and the oil supply assembly (2) installed on the cross shaft body (101) pours lubricant into the oil reservoir (104), and the lubricant is distributed through the oil supply groove (103) respectively. The lubricant enters each connecting pipe (102) and flows out through the through hole (408), contacting and lubricating the needle roller (303), thereby achieving single-point oil injection and global lubrication; the rolling assembly includes a wobbling ball (406), which is set in the oil supply groove (103). A limiting ring (407) is fixedly connected in the oil supply groove (103). When the cross shaft body (101) and the connecting pipe (102) rotate, when the connecting pipe (102) is in the upper position, the wobbling ball (406) falls into the limiting ring (407) in the oil supply groove (103) by the mating pin (402). When the connecting pipe (102) is in the upper position, the wobbling ball (406) falls into the limiting ring (407) in the oil supply groove (103) by the mating pin (402). When it is at the bottom, the shaking ball (406) falls from the limiting ring (407) to the docking pin (402) in the oil supply groove (103), accelerating the flow rate of the lubricant in the oil supply groove (103); the connecting pipe (102) has multiple inner grooves (6), which are symmetrically distributed L-shaped structures. When the shaking ball (406) falls from the limiting ring (407) to the docking pin (402) in the oil supply groove (103), some of the lubricant accumulated on the docking pin (402) flows through the inner groove (6) to the direction of the limiting ring (407), further accelerating the flow rate of the lubricant in the oil supply groove (103).

2. The novel universal joint bearing according to claim 1, characterized in that: The oil supply assembly (2) includes an oil storage box (201), which is provided with multiple fixing ears (203). The oil storage box (201) is fixed on the cross shaft body (101). A delivery pump (204) is provided on the cross shaft body (101). An oil delivery pipe is connected between the delivery pump (204) and the oil storage box (201). A battery assembly (205) and a sensor assembly (206) are fixedly connected on the cross shaft body (101). The battery assembly (205), the delivery pump (204), and the sensor assembly (206) are electrically connected. A supply pipe (202) is provided on the oil storage box (201).

3. The novel universal joint bearing according to claim 1, characterized in that: The bearing assembly (3) also includes a positioning bracket (302), which is an annular structure with multiple rotating grooves. The needle rollers (303) are rotatably connected in the rotating grooves. An outer sleeve (301) is sleeved on the needle rollers (303). The inner circumferential wall of the outer sleeve (301) has a rotating groove that is compatible with the needle rollers (303). The needle rollers (303) are placed into the positioning bracket (302) in sequence, and the positioning bracket (302) is placed into the outer sleeve (301). At this time, multiple needle rollers (303) will be inserted into the rotating grooves and are limited by the positioning bracket (302), so that the needle rollers (303) are all attached to the rotating grooves. Multiple needle rollers (303) are sleeved on the outer wall of the connecting tube (102). At this time, the outer sleeve (301) rotates relative to the connecting tube (102) under the action of the needle rollers (303).

4. A novel universal joint bearing according to claim 3, characterized in that: The sealing assembly (5) includes a first fixing ring (501) and a second fixing ring (503). The first fixing ring (501) is fixedly connected to the connecting pipe (102), and a first sealing ring (502) is fixedly connected to the first fixing ring (501). A second sealing ring (504) is fixedly connected to the second fixing ring (503). Both the first sealing ring (502) and the second sealing ring (504) are inserted between the outer sleeve (301) and the positioning bracket (302). The first fixing ring (501) is fixedly connected to the connecting pipe (102). When installing the outer sleeve (301) and the positioning bracket (302), the first fixing ring (501) can limit the outer sleeve (301) and the positioning bracket (302). At this time, the first sealing ring (502) will be directly inserted between the outer sleeve (301) and the positioning bracket (302). The second fixing ring (503) is installed from top to bottom, and the second sealing ring (504) is inserted between the outer sleeve (301) and the positioning bracket (302) to seal the outer sleeve (301) and the positioning bracket (302).

5. A novel universal joint bearing according to claim 1, characterized in that: Each rotating plate (401) is fixedly connected with a docking pin (402). The docking pin (402) and the connecting pipe (102) are in threaded contact. When the rotating plate (401) is rotated, the rotating plate (401) is sealed and disassembled under the action of the docking pin (402).

6. A novel universal joint bearing according to claim 1, characterized in that: A buffer plate (404) is inserted into the oil supply tank (103). A buffer spring (403) is fixedly connected between the buffer plate (404) and the docking pin (402). A connecting rope (405) is fixedly connected between the shaking ball (406) and the buffer plate (404). When the shaking ball (406) slides in the oil supply tank (103), the connecting rope (405) is used to limit the shaking ball (406) to prevent the shaking ball (406) from making noise due to impacting the limiting ring (407).

7. A novel universal joint bearing according to claim 6, characterized in that: Replace the buffer spring (403) and buffer plate (404) with the first counter-impact plate (409), replace the shaking ball (406) and connecting rope (405) with the moving ball (4010), and replace the limiting ring (407) with the counter-impact ring (4011). The first counter-impact plate (409), moving ball (4010), and counter-impact ring (4011) are made of the same magnetic material. An isolation sleeve (4012) is provided inside the connecting tube (102). Since the first counter-impact plate (409), the first counter-impact plate (4010), ... 9) The moving ball (4010) and the counter-impact ring (4011) are made of the same magnetic material. Therefore, when the moving ball (4010) moves in the oil supply tank (103), it will be subjected to the magnetic counter-impact of the first counter-impact plate (409) and the counter-impact ring (4011), which reduces the noise generated when the moving ball (4010) moves. The isolation sleeve (4012) is used to isolate the magnetic interference between the first counter-impact plate (409), the moving ball (4010), the counter-impact ring (4011) and the connecting pipe (102).

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