A synthetic resin sliding bearing

Abstract

The present invention relates to the technical field of sliding bearings, and in particular to a synthetic resin sliding bearing. A synthetic resin sliding bearing comprises a bearing seat, a bearing cover, a sliding ring and a plurality of adjustment mechanisms. Each adjustment mechanism comprises a guide block, on which a first flow channel and a second flow channel are provided. First, the bearing seat is rotated clockwise and the bearing cover is rotated counterclockwise, so that the lubricating grease on one side of the sliding ring increases, so that the lubrication between the bearing seat and the sliding ring is better. Then, the bearing seat is rotated clockwise and the bearing cover is rotated counterclockwise, so that the lubricating grease on one side of the sliding ring decreases and the lubricating grease on the other side of the sliding ring increases, so that the lubricating grease is fully utilized to increase the service life. The present invention provides a synthetic resin sliding bearing to solve the problem that the lubricating oil in the existing thrust sliding bearing cannot be fully utilized, resulting in wear of the sliding plate and affecting the bearing life.

Description

Technical Field

[0001] The present invention relates to the technical field of sliding bearings, and in particular to a sliding bearing made of synthetic resin. Background Art

[0002] Bearings are components used to support and guide rotating or moving parts, which can reduce energy loss and extend mechanical life. Shock absorber bearings are important components in the automobile suspension system, mainly used to reduce direct friction between the vehicle body and the axle, improve the vehicle's ride comfort and handling stability. Shock absorber bearings mainly bear axial loads in the assembly. Through the design of plane bearings, it can effectively reduce the impact and vibration caused by uneven road surfaces and improve ride comfort.

[0003] Sliding bearings include radial bearings, thrust bearings and bidirectional thrust bearings. Radial bearings bear pure radial force and are suitable for intermittent work at low speed and heavy load. Thrust bearings bear pure axial force and are suitable for intermittent work at low speed and heavy load. Bidirectional thrust bearings can bear axial and radial forces at the same time and are suitable for intermittent work at low speed and heavy load. Considering the characteristics of shock absorber bearings bearing axial and radial forces and working under low speed and heavy load environment, bidirectional thrust bearings are the best choice.

[0004] Synthetic resin bearings are a new type of bearing product with the advantages of high strength, low friction and good wear resistance. Synthetic resin bearings are different from traditional metal bearings in terms of material. The base material of synthetic resin bearings is usually made of synthetic resin, such as the following materials: POM (polyoxymethylene resin) is a linear polymer with high density, high crystallinity and no side chains. It is called Saigang or Dugang and is the third largest general engineering plastic. The friction coefficient of POM (polyoxymethylene resin) is 0.31 and the compressive strength is 120MPa. PP (polypropylene) is a polymer formed by polyaddition reaction of propylene. It has high density and high crystallinity and is known as one of the lightest general plastics. The friction coefficient of PP is 0.51 and the compressive strength is 50MPa. PA6 (nylon 6) is an engineering plastic with excellent mechanical properties, wear resistance and heat resistance. It is a polyamide made by polycondensation reaction of caprolactam and caprolactone. The friction coefficient of PA6 is 0.6 and the compressive strength is 90MPa.

[0005] For example, a Chinese invention patent with the announcement number CN103620244B provides a thrust sliding bearing, which is provided with an upper shell of synthetic resin, a lower shell of synthetic resin, and a thrust sliding support part of synthetic resin arranged between the upper shell and the lower shell, and lubricating oil is provided in the thrust sliding support part. However, the utilization rate of the lubricating oil in the thrust sliding bearing is not high, the service life of the thrust sliding bearing is low, and due to the wear between the upper shell, the lower shell and the thrust sliding support part, some debris will enter the lubricating oil, thereby accelerating the wear of the upper shell and the lower shell. Summary of the invention

[0006] The invention provides a synthetic resin sliding bearing to solve the problem that the lubricating oil in the existing thrust sliding bearing cannot be fully utilized, resulting in wear of the sliding sheet and shortening the bearing life.

[0007] A synthetic resin sliding bearing of the present invention adopts the following technical solution: A synthetic resin sliding bearing comprises a bearing seat, a bearing cover, a sliding ring piece and a plurality of adjustment mechanisms. The bearing seat is arranged on the bearing cover, and the bearing seat can rotate relative to the bearing cover. A first ring piece is fixedly arranged on the bearing seat, and a second ring piece is fixedly arranged on the bearing cover, and the first ring piece and the second ring piece are coaxially arranged. The first ring piece and the second ring piece are arranged opposite to each other, and a cavity is formed between the first ring piece and the second ring piece, and lubricating grease is arranged in the cavity.

[0008] The sliding ring is rotatably arranged in the cavity, and the sliding ring is coaxially arranged with the first ring. Along the axial direction of the sliding ring, a first ring groove is respectively provided on both sides of the sliding ring, and the first ring groove and the sliding ring are coaxially arranged. Two slide groove assemblies are provided in each first ring groove, and the two slide groove assemblies are arranged in sequence from the inside to the outside. Each slide groove assembly includes a plurality of first slide grooves, and the plurality of first slide grooves are distributed along the circumference of the sliding ring.

[0009] Along the circumference of the sliding ring, the two ends of each first slide groove are respectively a first end and a second end. A plurality of through holes are provided on the sliding ring, and the through holes are arranged along the axial direction of the sliding ring. Each through hole connects a first end in a first slide groove on one side of the sliding ring and a second end in a first slide groove on the other side of the sliding ring.

[0010] Each adjustment mechanism includes a guide block, each guide block is arranged in a first slide groove, along the circumference of the sliding ring, the two ends of the guide block are the third end and the fourth end respectively, and the guide block and the first end of the first slide groove are at the same end. The third end of the guide block is provided with a first flow channel, and the fourth end of the guide block is provided with a second flow channel, and the first flow channel and the second flow channel are arranged along the axial direction of the sliding ring.

[0011] Along the axial direction of the sliding ring, the two sides of the sliding ring are the first side and the second side, the bearing seat is on the first side of the sliding ring, and the bearing cover is on the second side of the sliding ring. The second flow channel of the fourth end of the guide block in the first side of the sliding ring, the through hole at the second end of the first slide groove in the first side of the sliding ring, and the first flow channel of the third end of the guide block in the second side of the sliding ring are connected. The first flow channel of the third end of the guide block in the first side of the sliding ring, the through hole at the first end of the first slide groove in the first side of the sliding ring, and the second flow channel of the fourth end of the guide block in the second side of the sliding ring are connected.

[0012] Furthermore, an oil scraping protrusion is fixedly provided on the second end of the first sliding groove.

[0013] Furthermore, along the axial direction of the sliding ring sheet, the guide block has a fifth end and a sixth end on both sides, and the sixth end of the guide block abuts against the bottom of the first slide groove. A first inclined surface is provided on the fifth end of each guide block, and along the direction from the third end to the fourth end of the guide block, the first inclined surface gradually approaches the bottom of the first slide groove. A plane is provided on the fifth end of the guide block, and the plane is located at the third end of the guide block, the first flow channel is located on the plane, and the plane is flush with the bottom of the first ring groove.

[0014] Furthermore, a plurality of oil filter grooves are provided on the first inclined surface, and the plurality of oil filter grooves are sequentially distributed along the direction from the first end to the second end of the guide block, and each oil filter groove is inclined. Along the direction from the first end to the second end of the guide block, the oil filter groove gradually moves away from the first inclined surface.

[0015] Furthermore, the two slide groove components in each first annular groove are an inner slide groove group and an outer slide groove group respectively. Along the circumference of the sliding ring plate, a first slide groove in the inner slide groove group is located between two adjacent first slide grooves in the outer slide groove group.

[0016] Along the axial direction of the sliding ring, a first slide groove in the inner slide groove group on the first side is located between two adjacent first slide grooves in the inner slide groove group on the second side, and a first slide groove in the outer slide groove group on the first side is located between two adjacent first slide grooves in the outer slide groove group on the second side.

[0017] Furthermore, along the radial direction of the sliding ring sheet, edge protrusions are formed on both sides of the first ring groove, and the edge protrusions are used to abut against the bearing seat or the bearing cover.

[0018] Furthermore, the bearing seat includes a first sleeve, and the first sleeve and the first ring plate are coaxially arranged. The inner peripheral wall of the first ring plate is fixedly connected to one side of the first sleeve. A first sealing convex ring is fixedly arranged on the other side of the first sleeve, and the first sealing convex ring and the first sleeve are coaxially arranged.

[0019] The bearing cover includes a second sleeve, and the second sleeve is coaxially arranged with the second ring piece. One side of the second sleeve is fixedly connected to the inner circumferential wall of the second ring piece. A second sealing convex ring is fixedly arranged on the inner circumferential wall of the other side of the second sleeve, and a second ring groove is provided in the second sealing convex ring. The second sealing convex ring, the second ring groove and the second sleeve are coaxially arranged. The first sleeve is rotatably arranged in the second sleeve, and the first sealing convex ring is rotatably arranged in the second ring groove.

[0020] Furthermore, a third ring groove is provided on the first ring sheet, the third ring groove and the first ring sheet are coaxially arranged, and the sliding ring sheet is rotatably arranged in the third ring groove. A third sealing convex ring is fixedly arranged on the outer side wall of the first ring sheet, and the third sealing convex ring and the first ring sheet are coaxially arranged.

[0021] A fourth sealing convex ring is fixedly arranged on the outer peripheral wall of the second ring sheet, and the fourth sealing convex ring is arranged coaxially with the second ring sheet. The third sealing convex ring and the fourth sealing convex ring are buckled with each other, and the third sealing convex ring and the fourth sealing convex ring can rotate relatively, and the third sealing convex ring is in the cavity.

[0022] Furthermore, a synthetic resin sliding bearing also includes a soft rubber pad, which includes a soft rubber ring sheet and a soft rubber tube, which are fixedly connected to each other, and the soft rubber ring sheet and the soft rubber tube are coaxially arranged, and the soft rubber tube is sleeved on the outer peripheral wall of the second sleeve. A plurality of damping convex rings are fixedly arranged on one side of the second ring sheet, the damping convex ring and the second ring sheet are coaxially arranged, and the plurality of damping convex rings are arranged in sequence from the inside to the outside, and the damping convex ring and the cavity are respectively located on both sides of the second ring sheet.

[0023] Furthermore, the materials of the bearing seat, the bearing cover and the sliding ring are all synthetic resin.

[0024] The beneficial effects of the present invention are as follows: the synthetic resin sliding bearing of the present invention, through the provided bearing seat, bearing cover, sliding ring and multiple adjustment mechanisms, first rotate the bearing seat clockwise and the bearing cover counterclockwise, because the lubricating grease is viscous, the bearing seat drives the lubricating grease on one side of the sliding ring to move, thereby moving the lubricating grease in the first slide groove on one side of the sliding ring out. The bearing cover drives the lubricating grease on the other side of the sliding ring to move, thereby pushing the lubricating grease in the first ring groove on the other side of the sliding ring into the first slide groove on the other side of the sliding ring.

[0025] The lubricating grease in the other side of the sliding ring plate enters one side of the sliding ring plate through the first flow channel, the through hole and the second flow channel. At this time, the lubricating grease in the other side of the sliding ring plate is reduced, the friction between the bearing cover and the sliding ring plate is increased, the sliding ring plate rotates synchronously with the bearing cover, and the lubricating grease in one side of the sliding ring plate is increased, so that the lubrication between the bearing seat and the sliding ring plate is better.

[0026] Then rotate the bearing seat clockwise and the bearing cover counterclockwise, thereby reducing the lubricating grease on one side of the sliding ring and increasing the lubricating grease on the other side of the sliding ring. The sliding ring rotates synchronously with the bearing seat, and the lubrication between the bearing cover and the sliding ring is better, thereby making full use of the lubricating grease to increase the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0028] Figure 1 A schematic structural diagram of a synthetic resin sliding bearing provided in an embodiment of the present invention;

[0029] Figure 2 A front view of a synthetic resin sliding bearing provided by an embodiment of the present invention;

[0030] Figure 3 for Figure 2 Sectional view at AA in the middle;

[0031] Figure 4 for Figure 3 The enlarged view of point B in the middle;

[0032] Figure 5 An exploded view of a synthetic resin sliding bearing provided by an embodiment of the present invention;

[0033] Figure 6 A partial cross-sectional schematic diagram of a sliding ring of a synthetic resin sliding bearing provided by an embodiment of the present invention;

[0034] Figure 7 for Figure 6 Enlarged view of point C in the middle;

[0035] Figure 8 A schematic structural diagram of a guide block of a synthetic resin sliding bearing provided by an embodiment of the present invention;

[0036] Fig. 9 A schematic structural diagram of a guide block of a synthetic resin sliding bearing provided by an embodiment of the present invention from another perspective;

[0037] Fig.10 A schematic structural diagram of a sliding ring of a synthetic resin sliding bearing provided by an embodiment of the present invention;

[0038] Fig.11 for Fig.10 Sectional view at DD in the middle;

[0039] Fig.12 for Fig.11 Enlarged view of point E in the middle.

[0040] In the figure: 100, bearing seat; 110, first ring piece; 111, third ring groove; 120, first sleeve; 130, third sealing convex ring; 140, first sealing convex ring; 200, bearing cover; 210, second ring piece; 220, second sleeve; 230, second sealing convex ring; 231, second ring groove; 240, fourth sealing convex ring; 250, damping convex ring; 300, soft rubber pad; 400, sliding ring piece; 410, edge protrusion; 420, first ring groove; 430, guide block; 431, oil filter groove; 432, positioning protrusion; 440, oil storage chamber; 450, first flow channel; 460, second flow channel; 470, through hole; 480, oil scraping protrusion; 490, first slide groove. DETAILED DESCRIPTION

[0041] 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.

[0042] Reference Figures 1 to 12 As shown, a synthetic resin sliding bearing provided by an embodiment of the present invention comprises a bearing seat 100, a bearing cover 200, a sliding ring piece 400 and a plurality of adjustment mechanisms. The bearing seat 100 is arranged on the bearing cover 200, and the bearing seat 100 can rotate relative to the bearing cover 200. A first ring piece 110 is fixedly arranged on the bearing seat 100, and a second ring piece 210 is fixedly arranged on the bearing cover 200, and the first ring piece 110 and the second ring piece 210 are coaxially arranged. The first ring piece 110 and the second ring piece 210 are arranged opposite to each other, and a cavity is formed between the first ring piece 110 and the second ring piece 210, and lubricating grease is arranged in the cavity.

[0043] The sliding ring piece 400 is rotatably arranged in the cavity, and the sliding ring piece 400 and the first ring piece 110 are coaxially arranged. Along the axial direction of the sliding ring piece 400, the two sides of the sliding ring piece 400 are the first side and the second side, the bearing seat 100 is located on the first side of the sliding ring piece 400, and the bearing cover 200 is located on the second side of the sliding ring piece 400. A first ring groove 420 is provided on the first side of the sliding ring piece 400, and a first ring groove 420 is also provided on the first side of the sliding ring piece 400. The first ring groove 420 and the sliding ring piece 400 are coaxially arranged. Two slide groove assemblies are provided in each first ring groove 420, and the two slide groove assemblies are arranged in sequence from the inside to the outside. Each slide groove assembly includes a plurality of first slide grooves 490, and the plurality of first slide grooves 490 are distributed along the circumference of the sliding ring piece 400, and each first slide groove 490 is arranged along the circumference of the sliding ring piece 400.

[0044] Along the circumference of the sliding ring 400, the two ends of each first slide groove 490 are respectively a first end and a second end. A plurality of through holes 470 are provided on the sliding ring 400. The through holes 470 are arranged along the axial direction of the sliding ring 400. Each through hole 470 connects a first end in a first slide groove 490 on the first side of the sliding ring 400 and a second end in a first slide groove 490 on the second side of the sliding ring 400.

[0045] Each adjustment mechanism includes a guide block 430, each guide block 430 is disposed in a first slide groove 490, and along the circumference of the sliding ring 400, the two ends of the guide block 430 are respectively the third end and the fourth end, and the guide block 430 and the first end of the first slide groove 490 are at the same end. The third end of the guide block 430 is provided with a first flow channel 450, and the fourth end of the guide block 430 is provided with a second flow channel 460, and the first flow channel 450 and the second flow channel 460 are arranged along the axial direction of the sliding ring 400.

[0046] The second flow channel 460 at the fourth end of the guide block 430 in the first side of the sliding ring piece 400, the through hole 470 at the second end of the first slide groove 490 in the first side of the sliding ring piece 400, and the first flow channel 450 at the third end of the guide block 430 in the second side of the sliding ring piece 400 are in communication. The first flow channel 450 at the third end of the guide block 430 in the first side of the sliding ring piece 400, the through hole 470 at the first end of the first slide groove 490 in the first side of the sliding ring piece 400, and the second flow channel 460 at the fourth end of the guide block 430 in the second side of the sliding ring piece 400 are in communication.

[0047] Rotate the bearing seat 100 clockwise and the bearing cover 200 counterclockwise. Since the lubricating grease is viscous, the bearing seat 100 drives the lubricating grease on the first side of the sliding ring 400 to move, so that the lubricating grease in the first slide groove 490 on the first side of the sliding ring 400 moves along the direction from the second end to the first end of the first slide groove 490, thereby moving the lubricating grease in the first slide groove 490 on the first side of the sliding ring 400 out.

[0048] The bearing cover 200 drives the lubricating grease on the second side of the sliding ring plate 400 to move, so that the lubricating grease in the first slide groove 490 on the second side of the sliding ring plate 400 moves along the direction from the first end to the second end of the first slide groove 490, and then the lubricating grease in the first ring groove 420 on the second side of the sliding ring plate 400 is pushed into the first slide groove 490 on the second side of the sliding ring plate 400.

[0049] The lubricating grease liquid pressure at the first end of the first chute 490 in the second side is greater than the lubricating grease liquid pressure at the second end of the first chute 490 in the first side, so the lubricating grease in the second side sequentially enters the first side through the first flow channel 450, the through hole 470, and the second flow channel 460. The lubricating grease liquid pressure at the second end of the first chute 490 in the second side is greater than the lubricating grease liquid pressure at the first end of the first chute 490 in the first side, so the lubricating grease in the second side sequentially enters the first side through the second flow channel 460, the through hole 470, and the first flow channel 450.

[0050] At this time, the lubricating grease in the second side of the sliding ring piece 400 is reduced, the friction between the bearing cover 200 and the sliding ring piece 400 is increased, the sliding ring piece 400 rotates synchronously with the bearing cover 200, and the lubricating grease in the first side of the sliding ring piece 400 is increased, so that the lubrication between the bearing seat 100 and the sliding ring piece 400 is better.

[0051] In this embodiment, an oil scraping protrusion 480 is fixedly provided at the second end of the first slide groove 490, and the oil scraping protrusion 480 and the fourth end of the guide block 430 form an oil storage chamber 440. When the bearing seat 100 or the bearing cover 200 rotates counterclockwise relative to the sliding ring 400, the oil scraping protrusion 480 can more easily scrape off the lubricating grease sticking on the bearing seat 100 or the bearing cover 200 and collect it in the oil storage chamber 440.

[0052] In this embodiment, along the axial direction of the sliding ring piece 400, the two ends of the guide block 430 are the fifth end and the sixth end, and the sixth end of the guide block 430 abuts against the bottom of the first slide groove 490. A first inclined surface is provided on the fifth end of each guide block 430, and along the direction from the third end to the fourth end of the guide block 430, the first inclined surface gradually approaches the bottom of the first slide groove 490. Due to the provision of the first inclined surface, when the bearing seat 100 or the bearing cover 200 rotates clockwise relative to the sliding ring piece 400, it is easier to bring out the lubricating grease in the first slide groove 490.

[0053] A plane is provided on the fifth end of the guide block 430 , and the plane is located at the third end of the guide block 430 . The first flow channel 450 is located on the plane, and the plane is flush with the bottom of the first annular groove 420 .

[0054] In another embodiment, a second inclined surface is provided on the fifth end of the guide block 430. The second inclined surface is inclined in the opposite direction to the first inclined surface, and the first flow channel 450 is on the second inclined surface. On the first side of the sliding ring 400 and on the first inclined surface, the liquid pressure of the lubricating grease moving in the direction from the fourth end to the third end of the guide block 430 gradually increases. When the lubricating grease comes to the plane or the second inclined surface, the liquid pressure of the lubricating grease is reduced by a part, so as to ensure that the lubricating grease on the second side of the sliding ring 400 can smoothly enter the first side of the sliding ring 400, and also have sufficient support force for the bearing seat 100.

[0055] In this embodiment, a plurality of oil filter grooves 431 are provided on the first inclined surface, and the plurality of oil filter grooves 431 are sequentially distributed along the direction from the third end to the fourth end of the guide block 430, and each oil filter groove 431 is inclined. Along the direction from the third end to the fourth end of the guide block 430, the oil filter groove 431 gradually moves away from the first inclined surface. When the lubricating grease moves along the direction from the third end to the fourth end of the guide block 430, the direction of movement of the lubricating grease in the first slide groove 490 on the second side of the sliding ring 400 is opposite to the inclined direction of the oil filter groove 431, thereby intercepting part of the wear debris in the lubricating grease, and playing a certain filtering role.

[0056] In this embodiment, the two slide groove components in each first annular groove 420 are respectively an inner slide groove group and an outer slide groove group, and along the circumference of the sliding ring 400, one first slide groove 490 in the inner slide groove group is located between two adjacent first slide grooves 490 in the outer slide groove group. The inner slide groove group and the outer slide groove form a labyrinth seal, which ensures sealing while having a low cost.

[0057] Along the axial direction of the sliding ring 400, a first slide groove 490 in the inner slide groove group on the first side is located between two adjacent first slide grooves 490 in the inner slide groove group on the second side, and a first slide groove 490 in the outer slide groove group on the first side is located between two adjacent first slide grooves 490 in the outer slide groove group on the second side.

[0058] In this embodiment, along the radial direction of the sliding ring piece 400, edge protrusions 410 are formed on both sides of the first ring groove 420, and the edge protrusions 410 are used to abut against the bearing seat 100 or the bearing cover 200. A positioning protrusion 432 is fixedly provided at the sixth end of each guide block 430, and a mounting groove is opened in each first slide groove 490, and each positioning protrusion 432 is arranged in a mounting groove.

[0059] In this embodiment, the bearing seat 100 includes a first sleeve 120, and the first sleeve 120 and the first ring plate 110 are coaxially arranged. The inner peripheral wall of the first ring plate 110 is fixedly connected to one side of the first sleeve 120. A first sealing convex ring 140 is fixedly arranged on the second side of the first sleeve 120, and the first sealing convex ring 140 and the first sleeve 120 are coaxially arranged.

[0060] The bearing housing 200 includes a second sleeve 220, and the second sleeve 220 is coaxially arranged with the second ring plate 210. One side of the second sleeve 220 is fixedly connected to the inner circumferential wall of the second ring plate 210. A second sealing convex ring 230 is fixedly arranged on the inner circumferential wall of the second side of the second sleeve 220, and a second annular groove 231 is formed in the second sealing convex ring 230. The second sealing convex ring 230, the second annular groove 231 and the second sleeve 220 are coaxially arranged. The first sleeve 120 is rotatably arranged in the second sleeve 220, and the first sealing convex ring 140 is rotatably arranged in the second annular groove 231.

[0061] In this embodiment, a third annular groove 111 is formed on the first annular plate 110, the third annular groove 111 and the first annular plate 110 are coaxially arranged, and the sliding annular plate 400 is rotatably arranged in the third annular groove 111. A third sealing convex ring 130 is fixedly arranged on the outer side wall of the first annular plate 110, and the third sealing convex ring 130 and the first annular plate 110 are coaxially arranged.

[0062] A fourth sealing convex ring 240 is fixedly disposed on the outer peripheral wall of the second ring piece 210, and the fourth sealing convex ring 240 is coaxially disposed with the second ring piece 210. The third sealing convex ring 130 and the fourth sealing convex ring 240 are buckled with each other, and the third sealing convex ring 130 and the fourth sealing convex ring 240 can rotate relative to each other, and the third sealing convex ring 130 is in the cavity.

[0063] In this embodiment, a synthetic resin sliding bearing also includes a soft rubber pad 300, which includes a soft rubber ring sheet and a soft rubber tube. The soft rubber ring sheet and the soft rubber tube are fixedly connected, and the soft rubber ring sheet and the soft rubber tube are coaxially arranged, and the soft rubber tube is sleeved on the outer peripheral wall of the second sleeve 220. A plurality of damping convex rings 250 are fixedly arranged on one side of the second ring sheet 210, and the damping convex rings 250 and the second ring sheet 210 are coaxially arranged. The plurality of damping convex rings 250 are arranged in sequence from the inside to the outside, and the damping convex rings 250 and the cavity are respectively located on both sides of the second ring sheet 210. A plurality of fourth ring grooves are provided on the soft rubber ring sheet, and the fourth ring grooves are coaxially arranged with the second ring sheet 210, and each damping convex ring 250 is arranged in a fourth ring groove. The material of the soft rubber pad 300 is TPV material, which mainly provides buffering and anti-skid effects for the bearing.

[0064] In this embodiment, the materials of the bearing seat 100, the bearing cover 200 and the sliding ring 400 are all synthetic resins. The material of the bearing seat 100 is modified POM, which has the characteristics of low friction coefficient, small wear and self-lubrication. It mainly provides the friction working surface and interface size for the bearing. According to the requirements of the bearing cover 200 for support and self-lubrication, the material of the bearing cover 200 is POM as the best, and PA6 is the second. The sliding ring 400 has a similar function to the bearing cover 200, but it and the bearing cover 200 exist as a friction pair, and the same material should be avoided as much as possible, so the material of the sliding ring 400 is PP as the best, and PA6 is the second.

[0065] Working process: Fig.11 As shown, the bearing seat 100 is rotated clockwise and the bearing cover 200 is rotated counterclockwise.

[0066] At this time, the sliding ring 400 does not rotate. Since the lubricating grease is viscous, the bearing seat 100 drives the lubricating grease on the first side of the sliding ring 400 to move, so that the lubricating grease in the first slide groove 490 on the first side of the sliding ring 400 moves along the direction from the second end to the first end of the first slide groove 490, thereby causing the lubricating grease in the first slide groove 490 on the first side to move out and enter the first ring groove 420 on the first side.

[0067] The bearing cover 200 drives the lubricating grease on the second side of the sliding ring plate 400 to move, so that the lubricating grease in the first slide groove 490 on the second side of the sliding ring plate 400 moves along the direction from the first end to the second end of the first slide groove 490, and then pushes the lubricating grease in the first ring groove 420 on the second side of the sliding ring plate 400 into the first slide groove 490 on the second side.

[0068] At this time, the moving direction of the lubricating grease in the first slide groove 490 in the second side of the sliding ring plate 400 is opposite to the inclined direction of the oil filter groove 431, thereby intercepting part of the wear debris in the lubricating grease to play a filtering role.

[0069] When the lubricating grease in the first slide groove 490 on the first side is moved out, when the lubricating grease is on the first inclined plane, the liquid pressure of the lubricating grease at the fourth end of the guide block 430 is reduced, and the liquid pressure of the lubricating grease at the third end of the guide block 430 is increased. When the lubricating grease is on a plane, the lubricating grease at the third end of the guide block 430 is dispersed into the first annular groove 420, and the liquid pressure at the first flow channel 450 on the first side is reduced.

[0070] The amount of lubricating grease in the first chute 490 on the second side gradually increases, and the liquid pressure of the lubricating grease in the first chute 490 increases, and the amount of lubricating grease collected at the fourth end of the guide block 430 on the second side is more, and the liquid pressure of the lubricating grease is greater. The liquid pressure of the lubricating grease at the third end of the guide block 430 on the second side is greater than the liquid pressure of the lubricating grease at the fourth end of the guide block 430 on the first side, so the lubricating grease on the second side sequentially enters the first side through the first flow channel 450, the through hole 470, and the second flow channel 460. The liquid pressure of the lubricating grease at the fourth end of the guide block 430 on the second side is greater than the liquid pressure of the lubricating grease at the third end of the guide block 430 on the first side, so the lubricating grease on the second side sequentially enters the first side through the second flow channel 460, the through hole 470, and the first flow channel 450.

[0071] At this time, the lubricating grease in the second side of the sliding ring piece 400 is reduced, the friction between the bearing cover 200 and the sliding ring piece 400 is increased, the sliding ring piece 400 rotates synchronously with the bearing cover 200, and the lubricating grease in the first side of the sliding ring piece 400 is increased, so that the lubrication between the bearing seat 100 and the sliding ring piece 400 is better.

[0072] The bearing seat 100 is rotated counterclockwise, and the bearing cover 200 is rotated clockwise. The lubricating grease in the first slide groove 490 on the first side of the sliding ring piece 400 moves in the direction from the first end to the second end of the first slide groove 490. The lubricating grease in the first slide groove 490 on the second side of the sliding ring piece 400 moves in the direction from the second end to the first end of the first slide groove 490. The lubricating grease in the first slide groove 490 on the first side of the sliding ring piece 400 flows into the first slide groove 490 on the second side of the sliding ring piece 400 through the first flow channel 450 and the second flow channel 460. At this time, the lubricating grease in the first side of the sliding ring piece 400 is reduced, and the lubricating grease on the second side of the sliding ring piece 400 is increased, and the sliding ring piece 400 rotates synchronously with the bearing seat 100.

[0073] The bearing seat 100 and the bearing cover 200 can both rotate relative to the sliding ring 400, so that the wear amount of the first side and the second side of the sliding ring 400 is the same, so as to increase the service life of the synthetic resin sliding bearing. When the edge protrusion 410 is worn, the first ring groove 420 does not exist. At this time, there is no edge protrusion 410 and the bearing seat 100 or the bearing cover 200 to abut against each other, and the lubricating grease in the first ring groove 420 will be squeezed out, and the lubrication effect will be poor. When the sliding ring 400 rotates relative to the bearing seat 100 or the bearing cover 200, the bearing seat 100 or the bearing cover 200 brings the lubricating grease in the first slide groove 490 out of the first slide groove 490, and under the action of the first inclined surface of the guide block 430, the lubricating grease in the first slide groove 490 is guided to the third end of the guide block 430. During this process, the pressure in the lubricating grease gradually increases. At this time, the lubricating grease can support the bearing seat 100 or the bearing cover 200 rotating relative to the sliding ring 400, and at the same time lubricate the contact surface between the sliding ring 400 and the bearing seat 100 or the bearing cover 200, thereby reducing wear.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A synthetic resin sliding bearing, characterized in that: It comprises a bearing seat, a bearing cover, a sliding ring sheet and a plurality of adjustment mechanisms; the bearing seat is arranged on the bearing cover, and the bearing seat can rotate relative to the bearing cover; a first ring sheet is fixedly arranged on the bearing seat, a second ring sheet is fixedly arranged on the bearing cover, and the first ring sheet and the second ring sheet are coaxially arranged; the first ring sheet and the second ring sheet are arranged oppositely, and a cavity is formed between the first ring sheet and the second ring sheet, and lubricating grease is arranged in the cavity; The sliding ring piece is rotatably arranged in the cavity, and the sliding ring piece and the first ring piece are coaxially arranged; along the axial direction of the sliding ring piece, a first ring groove is respectively opened on both sides of the sliding ring piece, and the first ring groove and the sliding ring piece are coaxially arranged; two slide groove assemblies are opened in each first ring groove, and the two slide groove assemblies are arranged in sequence from the inside to the outside; each slide groove assembly includes a plurality of first slide grooves, and the plurality of first slide grooves are distributed along the circumference of the sliding ring piece; Along the circumference of the sliding ring, the two ends of each first slide groove are respectively a first end and a second end, and a plurality of through holes are provided on the sliding ring, and the through holes are arranged along the axial direction of the sliding ring, and each through hole communicates with a first end in a first slide groove on one side of the sliding ring and a second end in a first slide groove on the other side of the sliding ring; Each adjustment mechanism includes a guide block, each guide block is arranged in a first slide groove, along the circumference of the sliding ring, the two ends of the guide block are respectively a third end and a fourth end, and the guide block and the first end of the first slide groove are at the same end; the third end of the guide block is provided with a first flow channel, the fourth end of the guide block is provided with a second flow channel, and the first flow channel and the second flow channel are arranged along the axial direction of the sliding ring; Along the axial direction of the sliding ring, the two sides of the sliding ring are the first side and the second side, the bearing seat is located on the first side of the sliding ring, and the bearing cover is located on the second side of the sliding ring; the second flow channel of the fourth end of the guide block in the first side of the sliding ring, the through hole at the second end of the first slide groove in the first side of the sliding ring, and the first flow channel of the third end of the guide block in the second side of the sliding ring are connected; the first flow channel of the third end of the guide block in the first side of the sliding ring, the through hole at the first end of the first slide groove in the first side of the sliding ring, and the second flow channel of the fourth end of the guide block in the second side of the sliding ring are connected.

2. A synthetic resin sliding bearing according to claim 1, characterized in that: An oil scraping protrusion is fixedly arranged at the second end of the first sliding groove.

3. A synthetic resin sliding bearing according to claim 1, characterized in that: Along the axial direction of the sliding ring sheet, the two sides of the guide block are the fifth end and the sixth end, and the sixth end of the guide block is against the bottom of the first slide groove; a first inclined surface is arranged on the fifth end of each guide block, and along the direction from the third end to the fourth end of the guide block, the first inclined surface gradually approaches the bottom of the first slide groove; a plane is arranged on the fifth end of the guide block, and the plane is located at the third end of the guide block, the first flow channel is located on the plane, and the plane is flush with the bottom of the first ring groove.

4. A synthetic resin sliding bearing according to claim 3, characterized in that: A plurality of oil filter grooves are provided on the first inclined surface, and the plurality of oil filter grooves are sequentially distributed along the direction from the first end to the second end of the guide block, and each oil filter groove is inclined; along the direction from the first end to the second end of the guide block, the oil filter grooves gradually move away from the first inclined surface.

5. The synthetic resin sliding bearing according to claim 1, characterized in that: The two slide groove components in each first ring groove are an inner slide groove group and an outer slide groove group. Along the circumference of the sliding ring plate, a first slide groove in the inner slide groove group is located between two adjacent first slide grooves in the outer slide groove group. Along the axial direction of the sliding ring, a first slide groove in the inner slide groove group on the first side is located between two adjacent first slide grooves in the inner slide groove group on the second side, and a first slide groove in the outer slide groove group on the first side is located between two adjacent first slide grooves in the outer slide groove group on the second side.

6. A synthetic resin sliding bearing according to claim 1, characterized in that: Along the radial direction of the sliding ring sheet, edge protrusions are formed on both sides of the first ring groove, and the edge protrusions are used to abut against the bearing seat or the bearing cover.

7. A synthetic resin sliding bearing according to claim 1, characterized in that: The bearing seat comprises a first sleeve, the first sleeve and the first ring sheet are coaxially arranged; the inner peripheral wall of the first ring sheet is fixedly connected to one side of the first sleeve; a first sealing convex ring is fixedly arranged on the other side of the first sleeve, and the first sealing convex ring and the first sleeve are coaxially arranged; The bearing cover includes a second sleeve, which is coaxially arranged with the second ring plate; one side of the second sleeve is fixedly connected to the inner circumferential wall of the second ring plate; a second sealing convex ring is fixedly arranged on the inner circumferential wall of the other side of the second sleeve, a second annular groove is opened in the second sealing convex ring, and the second sealing convex ring, the second annular groove and the second sleeve are coaxially arranged; the first sleeve is rotatably arranged in the second sleeve, and the first sealing convex ring is rotatably arranged in the second annular groove.

8. The synthetic resin sliding bearing according to claim 1, characterized in that: A third ring groove is formed on the first ring plate, the third ring groove and the first ring plate are coaxially arranged, and the sliding ring plate is rotatably arranged in the third ring groove; a third sealing convex ring is fixedly arranged on the outer side wall of the first ring plate, and the third sealing convex ring and the first ring plate are coaxially arranged; A fourth sealing convex ring is fixedly arranged on the outer peripheral wall of the second ring plate, and the fourth sealing convex ring is arranged coaxially with the second ring plate; the third sealing convex ring and the fourth sealing convex ring are buckled with each other, the third sealing convex ring and the fourth sealing convex ring can rotate relatively, and the third sealing convex ring is in the cavity.

9. The synthetic resin sliding bearing according to claim 1, characterized in that: It also includes a soft rubber pad, which includes a soft rubber ring sheet and a soft rubber tube. The soft rubber ring sheet and the soft rubber tube are fixedly connected and coaxially arranged. The soft rubber tube is sleeved on the outer peripheral wall of the second sleeve; a plurality of damping convex rings are fixedly arranged on one side of the second ring sheet, and the damping convex ring and the second ring sheet are coaxially arranged. The plurality of damping convex rings are arranged in sequence from the inside to the outside, and the damping convex ring and the cavity are respectively located on both sides of the second ring sheet.

10. The synthetic resin sliding bearing according to claim 1, characterized in that: The bearing seat, bearing cover and sliding ring are all made of synthetic resin.

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