A low wear rate bearing
By setting up the pressure pressure mechanism at the curved corner of the linear bearing, using elastic rubber tape and driving components to reduce the reverse force of the roller during the curve, solve the problem of weighing and noise in the conventional bearing, and achieve low low. The effect of wear rate and reducing noise.
Patent Information
- Application Number
- CN202411651737.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2044-11-19
AI Technical Summary
In conventional linear bearings, the balls need to change the direction of movement when passing through the curve and overcome the reverse force, resulting in increased wear and noise.
The antihypertensive mechanism, including setting up a belt wheel and elastic rubber tape on both sides of the ring channel, drive the rubber wheel rotation by the drive component, and the belt -driven elastic rubber strap moves, so that the roller will reduce the reverse force when the curve.
It reduces the wear and noise problems of the roller when the ball is worn in the curve. By reducing the pressure of the roller, the life of the bearings is prolonged.
Smart Images
Figure CN119146148B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of bearings, in particular to a low wear rate bearing. Background Art
[0002] Linear bearings are a type of bearing used in linear motion applications. Their function is to reduce friction during motion and provide a smooth guiding mechanism. Linear bearings are commonly used in situations where linear motion is required, such as machine guides, slides, sliders, etc.
[0003] The interior of the linear bearing is composed of a bearing sleeve, a retainer, a ball, and a sealing gasket. The retainer is provided with a closed annular channel formed by two straight channels and two semicircular bends. The side wall of one of the straight channels is connected to the inner surface of the retainer, and the ball moves on its inner side. The straight channel connected to the inner side of the retainer is in rolling contact with the bearing rod. Regarding the linear bearing, there will be wear and tear when the balls move in the annular channel and between the balls. Among them, the wear and tear of the balls is most serious when the balls pass through the semicircular bend. The reason is that when the balls pass through the bend, on the one hand, the inner wall of the bend is needed to change the direction of movement. On the other hand, all the balls in the other straight channel that is not connected to the retainer need to be pushed by the balls moving in the bend. Therefore, the balls moving in the bend need to overcome the reverse force of the balls in the other straight channel while changing their direction under force. The combined force causes the phenomenon of increased wear of the balls in the bend and the generation of noise. Summary of the invention
[0004] The purpose of the present invention is to provide a low wear rate bearing, which solves the problem in conventional linear bearings that a ball moving through a curve needs to overcome the reverse force of a ball in another straight track while changing direction under force, and the combined force causes the ball in the curve to wear more severely and generate noise.
[0005] To achieve the above object, the present invention provides the following technical solutions: a low wear rate bearing, comprising a bearing sleeve, a retainer inside the bearing sleeve and a ball, the bearing rod passes through the inner side of the retainer, an annular channel for the ball to reciprocate is provided in the retainer, a pressure reducing mechanism for pressing the ball and driving it to move is provided in the annular channel, and the pressure reducing mechanism is provided on a side of the annular channel away from the inner surface of the retainer;
[0006] The pressure reduction mechanism includes two pulleys respectively arranged at the bends on both sides of the annular channel, an elastic rubber belt passing through one side of the annular channel is arranged between the two pulleys, the elastic rubber belt is annular and sleeved on the surfaces of the two pulleys, and an arched baffle shaped like an outer annular channel is also arranged between the two pulleys, the arched baffle isolates the parallel part of the elastic rubber belt, and the part of the elastic rubber belt that fits the ball is pressed against the ball, the pressure reduction mechanism also includes a driving assembly for driving the pulley to rotate, the driving assembly includes a rubber wheel that partially protrudes to the inner surface of the retainer, and the rubber wheel is pressed against the surface of the bearing rod and rotates with the movement of the retainer;
[0007] The driving assembly drives the pulley to rotate by the rotation of the rubber wheel, and drives the bow-shaped baffle to move at the same time, and the moving speed of the elastic rubber belt is slightly greater than the surface linear speed of the rubber wheel, and the surface of the elastic rubber belt in contact with the ball is consistent with the moving direction of the ball.
[0008] As a further description of the above technical solution: the retainer includes a middle retaining ring, and two side retaining rings symmetrically spliced together on both sides, the middle retaining ring is provided with a ball running path and a ball return path, the ball running path is connected to the inner surface of the middle retaining ring, the side retaining ring is provided with a semi-arc slideway connected to the ball running path and the ball return path, the semi-arc slideway, the ball running path and the ball return path constitute an annular channel, and the elastic rubber belt is arranged on the inner side of the semi-arc slideway and the ball return path.
[0009] As a further description of the above technical solution: the inner walls of the semi-arc slideway and the return bead channel are respectively provided with installation grooves A and B, and the installation grooves A and B are used for fixedly installing the bow baffle and rotatably installing the pulley. The inner surface of the middle retaining ring is also provided with a protruding roller groove for rotating the rubber wheel.
[0010] As a further description of the above technical solution: the rotating surface of the pulley is arranged to be a concave arc surface, and the lower side cross-section of the elastic rubber belt passing around the pulley is arched.
[0011] As a further description of the above technical solution: the driving assembly includes a transmission rod arranged between the pulley and the rubber wheel, the end of the rubber wheel close to the rubber wheel is coaxially connected to a bevel gear A, one side of the rubber wheel is coaxially connected to a bevel gear B, the bevel gear B is meshingly connected to the bevel gear A, the side of the pulley close to the bow baffle is coaxially connected to a crown gear B, and one end of the transmission rod is provided with meshing teeth that cooperate with the crown gear B.
[0012] As a further description of the above technical solution: two transmission rods are coaxially arranged between the two pulleys, and a crown gear A is transmission-connected between the two transmission rods. One end of the transmission rod close to the crown gear A is provided with meshing teeth that cooperate with the crown gear A.
[0013] As a further description of the above technical solution: an oiling assembly for applying lubricating oil to the surface of the elastic rubber belt is fixedly provided on the side of the arched baffle away from the ball, and the oiling assembly includes an oil storage box fixedly installed on the surface of the arched baffle, and grooves for the elastic rubber belt to pass through are opened on both sides of the oil storage box, and a sponge block is arranged on the inner side of the oil storage box, and the interior of the sponge block is soaked with lubricating oil, and the elastic rubber belt moves through the interior of the sponge block.
[0014] As a further description of the above technical solution: an upper and lower movable shaking cover is also provided on the inner side of the oil storage box, the bow-shaped baffle is located below the oil storage box and is fixedly embedded with an airbag, the airbag elastically protrudes from the surface of the bow-shaped baffle close to the ball, and a through hole is opened on the lower surface of the oil storage box for the other side of the airbag to elastically push the shaking cover.
[0015] As a further description of the above technical solution: the bearing sleeve includes an inner bearing sleeve which is sleeved on the outer surfaces of the side retaining ring and the middle retaining ring, the outer side of the inner bearing sleeve is sleeved with an outer bearing sleeve, the surface of the inner bearing sleeve is provided with an open groove corresponding to the position of the pressure reducing mechanism, a baffle is provided on the inner side of the open groove, the baffle is detachably connected to the surface of the middle retaining ring by screws, and a slide groove is provided on the side of the baffle close to the semi-arc slideway and the return bead channel to form an annular channel together with the baffle.
[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:
[0017] 1. One side of the elastic rubber belt is pressed against the surface of the ball in contact with it, and the retainer moves on the bearing rod, so that the rubber wheel rolls on the bearing rod. The rubber wheel drives the elastic rubber belt to move through the driving assembly and the pulley, so that it accelerates in the direction of the ball movement. In this way, the ball pushed by the elastic rubber belt will no longer generate a reverse force on the ball moving forward in the curve, thereby reducing the pressure on the ball when passing the curve, thereby reducing the wear and noise of the ball.
[0018] 2. By splitting the retainer into a middle retaining ring and a side retaining ring, it is convenient to process and produce the retainer. The inner bearing sleeve is nested in the outer surfaces of the side retaining ring and the middle retaining ring to fix the side retaining ring and the middle retaining ring. The open groove on the surface of the inner bearing sleeve and the setting of the baffle in the open groove can first assemble the pressure reduction mechanism and the ball structure in the return ball channel and the semi-arc slideway through the open groove. After assembly, the baffle is used for isolation and protection. Finally, an outer bearing sleeve is nested on the surface of the inner bearing sleeve for further protection, which simplifies the assembly process. In the subsequent replacement of the ball or maintenance of the pressure reduction mechanism, it only needs to open the corresponding baffle, which also simplifies the subsequent maintenance process. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1It is a schematic diagram of a bearing sleeve of the present invention on a bearing rod;
[0020] Figure 2 It is a schematic diagram of the bearing structure of the present invention;
[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the outer bearing sleeve of the bearing of the present invention;
[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the inner bearing sleeve of the bearing of the present invention;
[0023] Figure 5 It is a schematic diagram of the structure of the inner bearing sleeve of the present invention;
[0024] Figure 6 It is a schematic diagram of the retainer structure of the present invention;
[0025] Figure 7 It is a schematic diagram of the assembly structure of the middle retaining ring and the pressure reducing mechanism of the present invention;
[0026] Figure 8 It is a schematic diagram of the assembly structure of the side retaining ring and the pressure reducing mechanism of the present invention;
[0027] Fig. 9 It is a schematic diagram of the structure of the pressure reducing mechanism of the present invention;
[0028] Fig.10 It is a structural schematic diagram of one side of the pressure reduction mechanism of the present invention;
[0029] Fig.11 It is a schematic diagram of the connection structure between the rubber wheel and the transmission rod of the present invention.
[0030] In the figure: 10, outer bearing sleeve; 20, inner bearing sleeve; 21, open groove; 22, baffle; 23, slideway groove; 30, side retaining ring; 31, semi-arc slideway; 32, mounting groove A; 40, middle retaining ring; 41, ball track; 42, return ball track; 43, mounting groove B; 44, roller groove; 50, ball; 60, pressure reduction mechanism; 61, bow baffle; 62, elastic rubber belt; 63, drive assembly; 631, transmission rod; 632, bevel gear A; 633, rubber wheel; 634, bevel gear B; 635, crown gear A; 64, pulley; 641, crown gear B; 65, oiling assembly; 651, oil storage box; 652, shaking cover; 653, sponge block; 654, airbag. DETAILED DESCRIPTION
[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0032] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings.
[0033] Combination Figure 1-Figure 11 A low wear rate bearing comprises a bearing sleeve, a retainer inside the bearing sleeve and a ball 50, a bearing rod passes through the inner side of the retainer, an annular channel for the ball 50 to reciprocate is provided in the retainer, a pressure reducing mechanism 60 for pressing the ball 50 and driving it to move is provided in the annular channel, and the pressure reducing mechanism 60 is provided on a side of the annular channel away from the inner surface of the retainer;
[0034] The pressure reducing mechanism 60 includes two pulleys 64 respectively arranged at the bends on both sides of the annular channel, an elastic rubber belt 62 passing through one side of the annular channel is arranged between the two pulleys 64, the elastic rubber belt 62 is annular and sleeved on the surfaces of the two pulleys 64, and an arched baffle 61 shaped like an outer annular channel is also arranged between the two pulleys 64, the arched baffle 61 isolates the parallel part of the elastic rubber belt 62, and the part of the elastic rubber belt 62 that fits the ball 50 is pressed against the ball 50, and the pressure reducing mechanism 60 also includes a driving assembly 63 for driving the pulleys 64 to rotate, and the driving assembly 63 includes a rubber wheel 633 partially protruding from the inner surface of the retainer, and the rubber wheel 633 is pressed against the surface of the bearing rod and rotates with the movement of the retainer;
[0035] The driving assembly 63 drives the pulley 64 to rotate by the rotation of the rubber wheel 633, and drives the arcuate baffle 61 to move at the same time, and the moving speed of the elastic rubber belt 62 is slightly greater than the surface linear speed of the rubber wheel 633, and the surface of the elastic rubber belt 62 in contact with the ball 50 is consistent with the moving direction of the ball 50;
[0036] When the ball 50 passes through the bend of the annular channel, the ball 50 moving in the bend needs to overcome the reverse force of the ball 50 in the other straight track while changing its direction under the force. The combined force causes the phenomenon of increased wear of the ball 50 in the bend and the problem of noise generation. In this embodiment, the retainer moves on the bearing rod, so that the rubber wheel 633 rolls on the bearing rod, and the rotating rubber wheel 633 is then transmitted to the pulley 64 through the driving assembly 63, so that the pulley 64 drives the surface of the elastic rubber belt 62 to move, and the automatic speed is greater than the surface linear speed of the rubber wheel 633. The moving elastic rubber belt 62 will push the compressed ball 50 to accelerate it in the direction of movement of the ball 50. The linear velocity of the surface of the ball 50 is the moving velocity of the bearing, which is also the moving velocity of the ball 50 in the annular channel. The moving velocity of the elastic rubber belt 62 is set to be greater than the moving velocity of the ball 50. When the ball 50 passes through the bend of the annular channel and enters the moving space of the elastic rubber belt 62, the elastic rubber belt 62 drives the ball 50 in contact with it to move faster. In this way, the ball 50 pushed by the elastic rubber belt 62 will no longer generate a reverse force on the ball 50 advancing in the bend, which greatly reduces the pressure on the ball 50 when passing through the bend, thereby reducing the wear caused by this part of the pressure. Furthermore, the noise problem caused by this part of the pressure is also solved.
[0037] Further, the retainer includes a middle retaining ring 40, and two side retaining rings 30 symmetrically spliced and connected on both sides, a ball running track 41 and a return bead track 42 are provided in the middle retaining ring 40, the ball running track 41 is connected to the inner surface of the middle retaining ring 40, and a semi-arc slideway 31 connected to the ball running track 41 and the return bead track 42 is provided in the side retaining ring 30, the semi-arc slideway 31, the ball running track 41, and the return bead track 42 constitute an annular channel, and an elastic rubber belt 62 is arranged on the inner side of the semi-arc slideway 31 and the return bead track 42;
[0038] The inner walls of the semi-arc slideway 31 and the ball return channel 42 are respectively provided with mounting grooves A32 and B43, which are used for fixing the arch baffle 61 and rotating the pulley 64, so that the space occupied by the arch baffle 61 and the pulley 64 does not affect the space for the ball 50 to move in the annular channel. The inner surface of the middle retaining ring 40 is also provided with a protruding roller groove 44 for the rubber wheel 633 to rotate.
[0039] The rotating surface of the pulley 64 is set to be a concave arc surface, and the lower side cross-section of the elastic rubber belt 62 passing around the pulley 64 is arched. After the elastic rubber belt 62 passes around the pulley 64, the cross-section of its lower surface is automatically deformed into an arch, so that when it is pressed against the surface of the ball 50, it has a larger contact area with it, so as to better drive it to move.
[0040] Combination Figure 9-11In the previous embodiment, the driving assembly 63 includes a transmission rod 631 arranged between the pulley 64 and the rubber wheel 633, and the end of the rubber wheel 633 close to the rubber wheel 633 is coaxially connected with a bevel gear A632, and one side of the rubber wheel 633 is coaxially connected with a bevel gear B634, and the bevel gear B634 is meshed with the bevel gear A632. The side of the pulley 64 close to the bow baffle 61 is coaxially connected with a crown gear B641, and one end of the transmission rod 631 is provided with meshing teeth that cooperate with the crown gear B641. Further, when the rubber wheel 633 drives the transmission rod 631 to rotate, the transmission rod 631 will drive the crown gear B641 to rotate. The diameter of the bevel gear B634 is larger than the diameter of the bevel gear A632. Finally, it is necessary to make the rotation speed of the crown gear B641 greater than the rotation speed of the rubber wheel 633, so that when it drives the pulley 64 through the crown gear B641, the linear velocity of the surface rotation of the pulley 64 is greater than the linear velocity of the surface rotation of the rubber wheel 633.
[0041] Furthermore, two transmission rods 631 are coaxially arranged between the two pulleys 64, and a crown gear A635 is transmission-connected between the two transmission rods 631. One end of the transmission rod 631 close to the crown gear A635 is provided with meshing teeth that cooperate with the crown gear A635. The two transmission rods 631 are transmission-connected by the crown gear A635 to rotate in opposite directions. In this way, the two crown gears B641 respectively transmission-connected by the two transmission rods 631 can rotate in the same direction. In this way, the two pulleys 64 will simultaneously drive the elastic rubber belt 62 to move. In this way, when the bearing reciprocates on the bearing rod, the rolling direction of the ball 50 and the moving direction of the elastic rubber belt 62 change due to the change in the bearing movement direction. The pulley 64 close to the entry direction of the ball 50 can provide an acceleration effect for the ball 50 more closely through the elastic rubber belt 62, which greatly improves the reaction time for the elastic rubber belt 62 to switch direction to apply an acceleration effect to the newly entered ball 50 when the bearing changes its movement direction, and further reduces the wear that will be generated in this process.
[0042] Combination Figure 9-10In the previous embodiment, an oiling assembly 65 for applying lubricating oil to the surface of the elastic rubber belt 62 is fixedly provided on the side of the arched baffle 61 away from the ball 50. The oiling assembly 65 includes an oil storage box 651 fixedly installed on the surface of the arched baffle 61. Grooves for the elastic rubber belt 62 to pass through are provided on both sides of the oil storage box 651. A sponge block 653 is provided on the inner side of the oil storage box 651. The inside of the sponge block 653 is soaked with lubricating oil. The elastic rubber belt 62 moves through the inside of the sponge block 653. When the elastic rubber belt 62 moves through the inside of the oil storage box 651, the sponge block 653 inside can apply lubricating oil to the surface of the elastic rubber belt 62. When the elastic rubber belt 62 moves and contacts with the ball 50, the lubricating oil on the surface is automatically transferred to the surface of the ball 50 and can be evenly applied to reduce the friction existing in the movement of the ball 50. The lubricating oil on the surface of the elastic rubber belt 62 can provide a lubricating effect for its own movement.
[0043] Furthermore, the oil storage box 651 is provided with a shaking cover 652 that moves upward and downward. The bow-shaped baffle 61 is fixedly embedded with an air bag 654 below the oil storage box 651. The air bag 654 elastically protrudes from the surface of the bow-shaped baffle 61 on one side close to the ball 50. The lower surface of the oil storage box 651 is provided with a through hole for the other side of the air bag 654 to elastically push the shaking cover 652. When the elastic rubber belt 62 is pressed against the surface of the ball 50, the surface of the elastic rubber belt 62 will also become a hump shape. When the hump passes through the lower surface of the airbag 654, it will push up one side of the airbag 654, so that the side of the airbag 654 close to the shaking cover 652 will slightly push up the shaking cover 652, so that the shaking cover 652 produces a vibration effect in the oil storage box 651, thereby promoting the circulation of the lubricating oil contained in the sponge block 653 inside it, thereby further ensuring that the lubricating oil in the vicinity of the sponge block 653 in contact with the elastic rubber belt 62 can be replenished in real time.
[0044] Combination Figure 3-Figure 8In the previous embodiment, the bearing sleeve includes an inner bearing sleeve 20 sleeved on the outer surfaces of the side retaining ring 30 and the middle retaining ring 40, and the outer bearing sleeve 10 is sleeved on the outer surface of the inner bearing sleeve 20. An open groove 21 is provided on the surface of the inner bearing sleeve 20 corresponding to the position of the pressure reducing mechanism 60, and a baffle 22 is provided on the inner side of the open groove 21. The baffle 22 is detachably connected to the surface of the middle retaining ring 40 by screws, and a slideway groove 23 is provided on the side of the baffle 22 close to the semi-arc slideway 31 and the return bead path 42, which together form an annular channel. By splitting the retainer into the middle retaining ring 40 and the side retaining ring 30, it is convenient to process and produce it, and the inner bearing sleeve 20 is nested in the side retaining ring 3 0, the outer surface of the middle retaining ring 40, the side retaining ring 30 and the middle retaining ring 40 are fixed, and the opening groove 21 on the surface of the inner bearing sleeve 20 is opened, and the blocking piece 22 is set in the open groove 21. The structure of the pressure reducing mechanism 60 and the ball 50 can be assembled in the return ball channel 42 and the semi-arc slideway 31 through the open groove 21. After assembly, the blocking piece 22 is used for isolation and protection. Finally, an outer bearing sleeve 10 is nested on the surface of the inner bearing sleeve 20 for further protection, which simplifies the assembly process. In the subsequent replacement of the ball 50 or maintenance of the pressure reducing mechanism 60, it is only necessary to open the corresponding blocking piece 22, which also simplifies the subsequent maintenance process.
[0045] Working principle: one side of the elastic rubber belt 62 is pressed against the surface of the ball 50 in contact with it, and the movement of the retainer on the bearing rod drives the rubber wheel 633 to roll on the bearing rod. The rotating rubber wheel 633 drives a transmission rod 631 to rotate, and the transmission rod 631 drives another transmission rod 631 to rotate in the opposite direction through the crown gear A635, so that the two crown gears B641 connected by the two transmission rods 631 rotate in the same direction, and further the two pulleys 64 will simultaneously drive the elastic rubber belt 62 to move, wherein the surface movement speed of the elastic rubber belt 62 is greater than the surface rotation linear speed of the rubber wheel 633, and the movable elastic rubber The belt 62 pushes the compressed ball 50 to accelerate it in the direction in which the ball 50 moves. By setting the moving speed of the elastic rubber belt 62 to be greater than the moving speed of the ball 50, when the ball 50 passes through the bend of the annular channel and enters the moving space of the elastic rubber belt 62, the elastic rubber belt 62 drives the ball 50 in contact with it to accelerate its movement. In this way, the ball 50 pushed by the elastic rubber belt 62 will no longer generate a reverse force on the ball 50 advancing in the bend, thereby reducing the pressure on the ball 50 when passing the bend, and thus reducing the wear caused by this part of the pressure. Furthermore, the noise problem caused by this part of the pressure is also solved.
[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A low wear rate bearing, comprising a bearing sleeve, a retainer inside the bearing sleeve, and a ball (50), wherein the bearing rod passes through the inner side of the retainer, and an annular channel for the ball (50) to reciprocate is provided in the retainer, characterized in that: A pressure reducing mechanism (60) for pressing the ball (50) and driving it to move is arranged in the annular channel, and the pressure reducing mechanism (60) is arranged on a side of the annular channel away from the inner surface of the retainer; The pressure reducing mechanism (60) comprises two pulleys (64) respectively arranged at the bends on both sides of the annular channel, an elastic rubber belt (62) passing through one side of the annular channel is arranged between the two pulleys (64), the elastic rubber belt (62) is annular and sleeved on the surfaces of the two pulleys (64), and an arched baffle (61) shaped like an outer annular channel is also arranged between the two pulleys (64), the arched baffle (61) is isolated from the parallel part of the elastic rubber belt (62), and the part of the elastic rubber belt (62) that is in contact with the ball (50) is pressed against the ball (50), and the pressure reducing mechanism (60) further comprises a driving assembly (63) for driving the pulleys (64) to rotate, the driving assembly (63) comprising a rubber wheel (633) partially protruding from the inner surface of the retainer, and the rubber wheel (633) is pressed against the surface of the bearing rod and rotates with the movement of the retainer; The driving assembly (63) drives the pulley (64) to rotate by the rotation of the rubber wheel (633), and at the same time drives the bow-shaped baffle (61) to move, and the moving speed of the elastic rubber belt (62) is slightly greater than the surface linear speed of the rubber wheel (633), and the surface of the elastic rubber belt (62) in contact with the ball (50) is consistent with the moving direction of the ball (50).
2. A low wear rate bearing according to claim 1, characterized in that: The retainer comprises a middle retaining ring (40) and two side retaining rings (30) symmetrically spliced and connected on both sides; a ball running track (41) and a ball return track (42) are provided in the middle retaining ring (40); the ball running track (41) is connected to the inner surface of the middle retaining ring (40); a semi-arc slideway (31) connected to the ball running track (41) and the ball return track (42) is provided in the side retaining ring (30); the semi-arc slideway (31), the ball running track (41) and the ball return track (42) form an annular channel; and the elastic rubber belt (62) is arranged on the inner sides of the semi-arc slideway (31) and the ball return track (42).
3. A low wear rate bearing according to claim 2, characterized in that: The inner walls of the semi-arc slideway (31) and the bead return path (42) are respectively provided with a mounting groove A (32) and a mounting groove B (43). The mounting groove A (32) and the mounting groove B (43) are used for fixedly mounting the bow baffle (61) and rotatably mounting the pulley (64). The inner surface of the middle retaining ring (40) is also provided with a protruding roller groove (44) for rotating the rubber wheel (633).
4. A low wear rate bearing according to claim 1, characterized in that: The rotating surface of the belt pulley (64) is arranged to be a concave arc surface, and the lower cross-section of the elastic rubber belt (62) passing around the belt pulley (64) is arched.
5. A low wear rate bearing according to claim 2, characterized in that: The driving assembly (63) comprises a transmission rod (631) arranged between a pulley (64) and a rubber wheel (633); one end of the rubber wheel (633) close to the rubber wheel (633) is coaxially connected to a bevel gear A (632); one side of the rubber wheel (633) is coaxially connected to a bevel gear B (634); the bevel gear B (634) is meshingly connected to the bevel gear A (632); one side of the pulley (64) close to the bow-shaped baffle (61) is coaxially connected to a crown gear B (641); and one end of the transmission rod (631) is provided with meshing teeth that cooperate with the crown gear B (641).
6. A low wear rate bearing according to claim 5, characterized in that: Two transmission rods (631) are coaxially arranged between the two pulleys (64), and a crown gear A (635) is transmission-connected between the two transmission rods (631). One end of the transmission rod (631) close to the crown gear A (635) is provided with meshing teeth that cooperate with the crown gear A (635).
7. A low wear rate bearing according to claim 2, characterized in that: An oiling assembly (65) for applying lubricating oil to the surface of the elastic rubber belt (62) is fixedly provided on the side of the arched baffle (61) away from the ball (50). The oiling assembly (65) comprises an oil storage box (651) fixedly mounted on the surface of the arched baffle (61). Two sides of the oil storage box (651) are provided with grooves for the elastic rubber belt (62) to pass through. A sponge block (653) is provided inside the oil storage box (651). The inside of the sponge block (653) is soaked with lubricating oil, and the elastic rubber belt (62) movably passes through the inside of the sponge block (653).
8. A low wear rate bearing according to claim 7, characterized in that: The oil storage box (651) is also provided with a shaking cover (652) that moves upward and downward. The bow-shaped baffle (61) is located below the oil storage box (651) and is fixedly embedded with an air bag (654). The side of the air bag (654) close to the ball (50) elastically protrudes from the surface of the bow-shaped baffle (61). The lower surface of the oil storage box (651) is provided with a through hole for the other side of the air bag (654) to elastically push the shaking cover (652).
9. A low wear rate bearing according to claim 2, characterized in that: The bearing sleeve comprises an inner bearing sleeve (20) sleeved on the outer surfaces of a side retaining ring (30) and a middle retaining ring (40); an outer bearing sleeve (10) is sleeved on the outer surface of the inner bearing sleeve (20); an open groove (21) is provided on the surface of the inner bearing sleeve (20) at a position corresponding to the pressure reducing mechanism (60); a baffle (22) is provided on the inner side of the open groove (21); the baffle (22) is detachably connected to the surface of the middle retaining ring (40) by screws; and a slideway groove (23) is provided on a side of the baffle (22) close to the semi-arc slideway (31) and the return bead path (42), which together with the baffle (22) form an annular channel.
Citation Information
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