Swing arm sliding bearing of dune buggy

Abstract

The utility model discloses a dune buggy swing arm sliding bearing which comprises a bearing inner ring and a bearing outer ring sleeved on the bearing inner ring, two ends of the bearing inner ring are respectively provided with an oil seal lining and a lining pipe, the oil seal lining and the lining pipe are coaxial with the bearing inner ring, and the inner diameter of the oil seal lining and the inner diameter of the lining pipe are the same. And a spiral oil duct structure is arranged at the inner diameter of the bearing outer ring. The axial surface pressure can be increased, the radial bearing capacity is enhanced, the problems that the axial surface pressure is small, torque is prone to loss, and the radial bearing capacity is weak are solved, and it is guaranteed that tires of a vehicle are stable and reliable under severe road conditions; and meanwhile, the spiral oil channel is easier to flow and lubricate.

Description

Technical Field

[0001] The utility model relates to the technical field of sliding bearings, and more specifically, to a sliding bearing for a swing arm of a beach vehicle. Background Art

[0002] At present, the bearings used in the swing arm assembly on the market are all spherical bearings. For example, the Chinese patent announcement number is CN206765730 U, and the announcement date is December 19, 2017. The name of the invention is a beach car and its rear swing arm bearing installation device. The application discloses a rear swing arm bearing installation device, which uses a self-lubricating radial spherical bearing. The disadvantages of this bearing are small axial bearing area and small surface pressure, weak radial sliding bearing capacity and large clearance, which leads to easy loss of torque of the swing arm assembly, and it is easy to shake under bad road conditions, and the tires have obvious "eight" shape and other problems. Utility Model Content

[0003] The utility model overcomes the shortcomings of the prior art, such as small axial surface pressure, easy torque loss and weak radial bearing capacity, and provides a beach vehicle swing arm sliding bearing, which can increase the axial surface pressure, and at the same time, increases the radial bearing area and enhances the radial bearing capacity.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a beach car swing arm sliding bearing, comprising a bearing inner ring and a bearing outer ring sleeved on the bearing inner ring, wherein the two ends of the bearing inner ring are respectively provided with an oil seal bushing and an inner liner tube, and the oil seal bushing and the inner liner tube are both coaxial with the bearing inner ring and have the same inner diameter.

[0005] The utility model provides a sliding bearing, in which the outer ring of the bearing is sleeved on the inner ring of the bearing, which can increase the radial load-bearing capacity; the oil seal bushing and the inner liner tube are coaxial with the inner ring of the bearing and have the same inner diameter, so that the inner ring of the bearing and the oil seal bushing and the inner liner tube have sufficient structural contact area; and the parts are heat-treated, so when the bolts and nuts at both ends are tightened, the axial surface pressure and friction force can be guaranteed to be stable and reliable.

[0006] Preferably, the inner diameter of the bearing outer ring is the same as the outer diameter of the bearing inner ring, and the length of the bearing inner ring is greater than the length of the bearing outer ring.

[0007] The outer diameters of the inner and outer rings of the bearing are the same, and the outer ring of the bearing is sleeved on the inner ring of the bearing, which can reduce the clearance between the inner and outer rings of the bearing. The length of the inner ring of the bearing is greater than that of the outer ring of the bearing, which can ensure radial overall area contact, increase the radial bearing area, and withstand strong radial impact force.

[0008] Preferably, a spiral oil channel structure is provided at the inner diameter of the outer ring of the bearing.

[0009] The spiral oil passage structure is arranged at the inner diameter of the bearing outer ring, which can ensure reliable lubrication and good fluidity of the grease when the inner and outer rings of the bearing rotate.

[0010] Preferably, an oil inlet groove and an oil outlet groove are arranged on the bearing outer ring. The oil inlet groove and the oil outlet groove enable the grease to flow into and out of the spiral oil passage during the relative movement of the inner and outer rings of the bearing.

[0011] Preferably, a flange and a groove are arranged at one end of the bearing inner ring.

[0012] The flange arranged on the bearing inner ring can increase the axial load-bearing area and also play a role in limiting the outer ring. The design of the groove can make the grease flow more smoothly.

[0013] Preferably, a sealing ring is arranged on the oil seal bushing.

[0014] The oil seal bushing of the present utility model adopts a T-shaped sleeve, and a sealing ring is installed on the T-shaped sleeve to prevent the grease from leaking out of the bearing and affecting the working process.

[0015] Preferably, a housing and housing covers installed at both ends of the housing are also provided.

[0016] The function of the housing is to facilitate the connection and fixation of the bearing structure and the swing arm structure. At the same time, after being installed with the housing covers, it can also increase the axial surface pressure of the bearing.

[0017] Preferably, a limiting protrusion is arranged on the inner diameter of the housing, and the bearing outer ring is clamped between the limiting protrusion and the flange on the bearing inner ring.

[0018] Axially limiting the bearing outer ring can prevent the bearing outer ring from axially moving when the inner and outer rings of the bearing rotate, can also increase the axial surface pressure, and at the same time, can ensure sufficient radial load-bearing area and increase the radial bearing capacity.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0020] (1) By arranging the structures of the oil seal bushing and the inner lining pipe at both ends of the bearing inner ring, the axial surface pressure can be increased;

[0021] (2) The bearing outer ring is sleeved on the bearing inner ring, and the length of the bearing inner ring is greater than the length of the bearing outer ring, which can increase the radial contact area and the radial load-bearing capacity;

[0022] (3) The spiral oil passage structure on the bearing outer ring and the arrangement of the oil inlet groove and the oil outlet groove ensure more reliable lubrication and good fluidity of the grease when the inner and outer rings of the bearing rotate. Description of the Drawings

[0023] Figure 1It is a schematic structural diagram of the bearing combination of the present utility model.

[0024] Figure 2 It is a sectional view taken along line A-A in the schematic structural diagram of the bearing combination of the present utility model.

[0025] Figure 3 It is an enlarged view of the bearing part in the sectional view taken along line A-A.

[0026] Figure 4 It is a schematic structural diagram of the inner ring of the bearing of the present utility model.

[0027] Figure 5 It is a schematic structural diagram of the outer ring of the bearing of the present utility model.

[0028] Figure 6 It is a sectional view of the outer ring of the bearing of the present utility model.

[0029] In the figure: 1. Outer shell, 2. Outer shell cover, 31. First outer bearing ring, 32. First inner bearing ring, 321. First flange, 322. First groove, 41. Second outer bearing ring, 42. Second inner bearing ring, 421. Second flange, 422. Second groove, 51. Oil inlet groove, 52. Oil outlet groove, 6. Spiral oil passage, 71. First oil seal bushing, 72. Second oil seal bushing, 8. Inner lining pipe, 9. Sealing ring. Specific embodiments

[0030] The technical solution of the present utility model will be further specifically described below through specific embodiments in conjunction with the accompanying drawings:

[0031] Embodiment 1: A bearing is a component that plays a role in fixing and reducing the load friction coefficient during mechanical transmission. That is to say, when other machine parts generate relative motion to each other on the shaft, it is a machine part used to reduce the friction coefficient during power transmission and keep the shaft center position fixed. A bearing is a very important component in contemporary mechanical equipment. Its main function is to support the mechanical rotating body to reduce the mechanical load friction coefficient during the transmission of the equipment. Among them, a spherical plain bearing is a kind of spherical sliding bearing, and its sliding contact surface is an inner spherical surface and an outer spherical surface, and it can rotate and swing at any angle during movement. It is made by using a variety of special process treatment methods such as surface phosphating, chipping, padding, spraying, etc. Spherical plain bearings have the characteristics of large load capacity, shock resistance, corrosion resistance, wear resistance, self-aligning, good lubrication, etc. Currently, the bearings used in the swing arm combination on the market are all spherical plain bearings, but the disadvantages of this bearing are that the axial bearing area is small and the surface pressure is small, the radial sliding bearing capacity is weak and the clearance is large, which leads to easy loss of torque of the swing arm combination, and it is easy to have large shaking and obvious "eight" - shaped problems of the tires under harsh road conditions.

[0032] In order to solve the problems of small axial surface pressure, easy torque loss, and weak radial load-bearing capacity, and to ensure the stable and reliable operation of the tires of vehicles under harsh road conditions, the present utility model proposes a swing arm sliding bearing for a beach vehicle, which increases the axial surface pressure and radial load-bearing capacity of the bearing. In addition, the grease flows more easily in the bearing.

[0033] As Figure 1 , Figure 2 and Figure 3 shown, the present utility model includes bearing one and bearing two. Bearing one includes bearing inner ring one 32 and bearing outer ring one 31 sleeved on bearing inner ring one 32. Bearing two includes bearing inner ring two 42 and bearing outer ring two 41 sleeved on bearing inner ring two 42. The inner diameter of bearing outer ring one 31 is the same as the outer diameter of bearing inner ring one 32. The inner diameter of bearing outer ring two 41 is the same as the outer diameter of bearing inner ring two 42. Moreover, the outer diameters of bearing inner ring one 32 and bearing inner ring two 42 are the same. In addition, as Figure 4 shown, the length of bearing inner ring one 32 is greater than the length of bearing outer ring one 31, and the length of bearing inner ring two 42 is also greater than the length of bearing outer ring two 41, making the bearing inner ring and the bearing outer ring fit more closely, reducing the clearance between the bearing inner ring and the bearing outer ring, ensuring radial overall area contact, increasing the radial load-bearing area, and being able to withstand strong radial impact forces.

[0034] Seal bushing and inner liner tube 8 are respectively arranged at both ends of the bearing inner ring. The bearing inner ring has sufficient structural contact area with the seal bushings and inner liner tube 8 on both sides, and the parts are heat-treated, which can ensure strong surface pressure and stable and reliable friction. Specifically, inner liner tube 8 is arranged between bearing inner ring one 32 and bearing inner ring two 42. Seal bushing one 71 is arranged on the side of bearing inner ring one 32 away from inner liner tube 8, and seal bushing two 72 is arranged on the side of bearing inner ring two 42 away from inner liner tube 8. Among them, both seal bushing one 71 and seal bushing two 72 adopt T-shaped sleeves. When the bolts and nuts at both ends are tightened, both sides of the bearing inner ring will be pressed against the T-shaped sleeves and inner liner tube 8 respectively, thus ensuring strong surface pressure and stable and reliable friction.

[0035] The seal bushing, inner liner tube 8, and the bearing inner ring are coaxial and have the same inner diameter. Specifically, seal bushing one 71 and the bearing inner ring are coaxial and have the same inner diameter. Both bearing inner ring one 32 and bearing inner ring two 42 are coaxial with inner liner tube 8 and have the same inner diameter. Bearing inner ring two 42 and seal bushing two 72 are coaxial and have the same inner diameter.

[0036] On one side of the inner ring 32 of bearing one near the oil seal bushing 71, a flange 321 is provided. On one side of the inner ring 42 of bearing two near the oil seal bushing 72, a flange 421 is provided. The flange 321 and the flange 421 will respectively limit the outer ring 31 of the bearing and the outer ring 41 of the bearing, preventing the outer ring of the bearing from slipping out of the inner ring of the bearing. At the same time, it can also increase the surface pressure in the axial direction.

[0037] As Figure 5 and Figure 6 shown, a spiral oil passage 6 is provided at the inner diameter of the outer ring 31 of the bearing, and a spiral oil passage 6 is also provided at the inner diameter of the outer ring 41 of the bearing. Through the spiral design, the strength and stability of the pipeline can be increased, and the efficiency of fluid transportation can be improved. At the same time, the spiral pipeline can also reduce the resistance and pressure loss of the pipeline, reduce the leakage of grease and energy consumption.

[0038] Specifically, in this embodiment, the spiral oil passage 6 is a spiral arc oil passage, which can ensure reliable lubrication and good fluidity of the grease when the inner ring and the outer ring of the bearing rotate. An oil inlet groove 51 and an oil outlet groove 52 are respectively provided at both ends of the outer ring of the bearing. The oil inlet groove 51 and the oil outlet groove 52 enable the grease to flow into and out of the spiral oil passage 6 during the relative movement of the inner ring and the outer ring of the bearing. In addition, a groove 322 and a groove 422 are also provided on the inner ring 32 of the bearing one and the inner ring 42 of the bearing two. The functions of the groove 322 and the groove 422 are to buffer the grease during the flow process, make the grease flow more smoothly in the spiral oil passage 6, and ensure that the inner ring and the outer ring of the bearing can be lubricated in place during the relative movement.

[0039] Sealing rings 9 are provided on the oil seal bushing 71 and the oil seal bushing 72, and the sealing rings 9 are installed on the T-shaped sleeve to prevent the grease from leaking out of the bearing and affecting the working process.

[0040] In this embodiment, a housing 1 and housing covers 2 installed at both ends of the housing 1 are also provided. The shape of the housing 1 is designed to be thin in the middle and thick at both sides, and is in a flared shape at both ends of the housing 1. The housing covers 2 are installed and fixed at the flared parts at both ends of the housing 1. The swing arm assembly of the ATV is sleeved on the housing 1. At the same time, after being installed with the housing covers 2, it can also increase the axial surface pressure of bearing one and bearing two. Limiting protrusions are provided on the inner diameter of the housing 1. The outer ring 31 of the bearing is clamped between the limiting protrusion and the flange 321 on the inner ring 32 of the bearing, and the outer ring 41 of the bearing is clamped between the limiting protrusion and the flange 421 on the inner ring 42 of the bearing, axially limiting the outer ring of the bearing, which can prevent the outer ring of the bearing from axially moving during the rotation of the inner ring and the outer ring of the bearing, can also increase the axial surface pressure, and at the same time, can ensure that there is enough radial bearing area to improve the radial bearing capacity.

[0041] Embodiment 2: In some embodiments, the spiral oil passage 6 structure adopts a spiral square oil passage. Specifically, the oil passages provided at the inner diameters of the outer bearing ring one 31 and the outer bearing ring two 41 adopt spiral square oil passages.

[0042] In some embodiments, the spiral oil passage 6 can be designed as a "comb" - shaped oil passage. Specifically, the oil passages provided at the inner diameters of the outer bearing ring one 31 and the outer bearing ring two 41 adopt "comb" - shaped oil passages.

[0043] In some embodiments, the spiral oil passage 6 provided on the inner diameter of the outer bearing ring can also be provided on the outer diameter of the inner ring. Specifically, oil passages are provided at the outer diameters of the inner bearing ring one 32 and the inner bearing ring two 42.

[0044] Embodiment 3: In some embodiments, the single oil inlet groove 51 or oil outlet groove 52 provided at both ends of the outer bearing ring is replaced with multiple oil inlet grooves 51 or oil outlet grooves 52. Specifically, multiple oil inlet grooves 51 or oil outlet grooves 52 are respectively provided at both ends of the outer bearing ring one 31 and the outer bearing ring two 41, which can increase the flow rate and velocity of the grease.

[0045] Next, a general introduction to the structure of this embodiment is given:

[0046] This embodiment includes bearing one and bearing two. Bearing one includes the inner bearing ring one 32 and the outer bearing ring one 31, and bearing two includes the inner bearing ring two 42 and the outer bearing ring two 41. A lining tube 8 is provided between bearing one and bearing two, and both ends of the lining tube 8 are coaxially in contact with the inner bearing ring one 32 and the inner bearing ring two 42 and have the same inner diameter. An oil - seal bushing one 71 is provided at the end of the inner bearing ring one 32 away from the lining tube 8, and the oil - seal bushing one 71 is coaxially in contact with the inner bearing ring one 32 and has the same inner diameter. An oil - seal bushing two 72 is provided at the end of the inner bearing ring two 42 away from the lining tube 8, and the oil - seal bushing two 72 is coaxially in contact with the inner bearing ring two 42 and has the same inner diameter. Sealing rings 9 are provided on both the oil - seal bushing one 71 and the oil - seal bushing two 72.

[0047] A flange one 321 is provided at the end of the inner bearing ring one 32 close to the oil - seal bushing one 71, and a groove one 322 is also provided on the outer diameter of the inner bearing ring one 32. The outer bearing ring one 31 is sleeved on the inner bearing ring, and one end of the outer bearing ring one 31 is in close contact with the flange one 321; a flange two 421 is provided at the end of the inner bearing ring two 42 close to the oil - seal bushing two 72, and a groove two 422 is also provided on the outer diameter of the inner bearing ring two 42. The outer bearing ring two 41 is sleeved on the inner bearing ring two 42, and one end of the outer bearing ring two 41 is in close contact with the flange two 421.

[0048] A spiral arc oil passage is provided at the inner diameter of the first outer bearing ring 31. An oil inlet groove 51 and an oil outlet groove 52 are respectively provided at both ends of the first outer bearing ring 31. A similar spiral arc oil passage is also provided at the inner diameter of the second outer bearing ring 41, and an oil inlet groove 51 and an oil outlet groove 52 are provided at both ends of the second outer bearing ring 41. Among them, the spiral arc oil passage can be replaced by a spiral square oil passage or a "comb" - shaped oil passage; more than one oil inlet groove 51 and oil outlet groove 52 can also be provided at both ends of the first outer bearing ring 31 and the second outer bearing ring 41; the oil passage can also be provided not at the inner diameter of the first outer bearing ring 31 or the second outer bearing ring 41, but at the outer diameter of the first inner bearing ring 32 or the second inner bearing ring 42.

[0049] A housing 1 is provided outside the first bearing, the second bearing, and the inner lining pipe 8. The middle of the housing 1 is narrow and the two sides are wide. The two ends of the housing 1 are in a flared - mouth shape. In addition, a housing cover 2 is provided, and the structure of the housing cover 2 is adapted to the flared - mouth ends of the housing 1 so that the housing cover 2 can be installed on the housing 1. There are limit protrusions at the inner diameter of the housing 1. After the housing 1 is installed, the two ends of the limit protrusions will respectively contact the first outer bearing ring 31 and the second outer bearing ring 41, so that the first outer bearing ring 31 is clamped between the limit protrusion of the housing 1 and the flange 321 on the first inner bearing ring 32, and the second outer bearing ring 41 is clamped between the limit protrusion of the housing 1 and the flange 421 on the second inner bearing ring 42.

[0050] The swing - arm assembly of the ATV is connected to the bearing structure by sleeving on the housing 1.

[0051] Combined with the above, the beneficial effects that the present utility model can obtain are as follows: The coaxial contact structure design of the inner ring one 32 of the bearing with the oil seal bushing one 71 and the inner liner 8, and the coaxial contact of the inner ring two 42 of the bearing with the oil seal bushing two 72 and the inner liner 8, and the parts are heat-treated, which can increase the surface pressure in the axial direction; The outer ring one 31 of the bearing is sleeved on the inner ring one 32 of the bearing, and the length of the inner ring one 32 of the bearing is greater than the length of the outer ring one 31 of the bearing. The outer ring two 41 of the bearing is sleeved on the inner ring two 42 of the bearing, and the length of the inner ring two 42 of the bearing is greater than the length of the outer ring two 41 of the bearing, which can increase the radial contact area and the radial load-bearing capacity; The spiral oil passage 6 structure provided on the outer ring one 31 of the bearing and the outer ring two 41 of the bearing, and the setting of the oil inlet groove 51 and the oil outlet groove 52 ensure more reliable lubrication and good fluidity of the grease when the inner and outer rings of the bearing rotate; The grooves one 322 and two 422 provided on the inner ring one 32 of the bearing and the inner ring two 42 of the bearing can store the grease, buffer the grease during the flow process, and enable the grease to flow more smoothly in the spiral oil passage 6; The limit protrusions on the inner diameter of the housing 1 cooperate with the flange one 321 on the inner ring one 32 of the bearing and the flange two 421 on the inner ring two 42 of the bearing respectively to limit the outer ring one 31 of the bearing and the outer ring two 41 of the bearing respectively, which can prevent axial sliding during the rotation of the inner and outer rings of the bearing, and at the same time, ensure the radial contact area; The inner diameter of the outer ring one 31 of the bearing is the same as the outer diameter of the inner ring one 32 of the bearing, and the inner diameter of the outer ring two 41 of the bearing is the same as the outer diameter of the inner ring two 42 of the bearing, which can reduce the radial clearance and ensure the torque of the swing arm assembly.

[0052] The above-described embodiments are only the preferred solutions of the present utility model, and do not impose any form of limitation on the present utility model. There are other variants and modifications without exceeding the technical solutions recorded in the claims.

Claims

1. A sliding bearing for a beach vehicle swing arm, characterized in that: It comprises a bearing inner ring and a bearing outer ring sleeved on the bearing inner ring. The two ends of the bearing inner ring are respectively provided with an oil seal bushing and an inner liner tube. The oil seal bushing and the inner liner tube are coaxial with the bearing inner ring and have the same inner diameter.

2. The beach vehicle swing arm sliding bearing according to claim 1, characterized in that: The inner diameter of the bearing outer ring is the same as the outer diameter of the bearing inner ring, and the length of the bearing inner ring is greater than the length of the bearing outer ring.

3. The beach vehicle swing arm sliding bearing according to claim 1 or 2, characterized in that: A spiral oil channel structure is arranged at the inner diameter of the outer ring of the bearing.

4. The beach vehicle swing arm sliding bearing according to claim 1 or 2, characterized in that: An oil inlet groove and an oil outlet groove are arranged on the outer ring of the bearing.

5. The beach vehicle swing arm sliding bearing according to claim 1 or 2, characterized in that: The bearing inner ring is provided with a flange and a groove.

6. The sliding bearing for the swing arm of a beach vehicle according to claim 1 or 2, characterized in that: A sealing ring is arranged on the oil seal bushing.

7. The beach vehicle swing arm sliding bearing according to claim 1 or 2, characterized in that: A shell and shell covers installed at two ends of the shell are also provided.

8. The sliding bearing for the swing arm of a beach vehicle according to claim 7, characterized in that: A limiting protrusion is arranged on the inner diameter of the housing, and the outer ring of the bearing is clamped between the limiting protrusion and the flange on the inner ring of the bearing.

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