An adaptive adjustment bearing, a bearing assembly, a power transmission system and an automobile

Abstract

The present invention discloses an adaptive adjustment bearing, a bearing assembly, a power transmission system and an automobile. Among them, the adaptive adjustment bearing is used to be installed on an installation base. The adaptive adjustment bearing includes an outer bearing ring and a slider. A groove is formed on the outer end face of the outer bearing ring. One end of the slider extends into the groove and is in sealed and sliding fit with the side wall of the groove. A sealed cavity is defined between the slider and the bottom of the groove. The other end of the slider is used to contact the installation base. The outer bearing ring or the slider is provided with a liquid injection hole communicated with the sealed cavity. A detachable seal is arranged at the liquid injection hole. The liquid injection hole is used to inject a liquid expansion material into the sealed cavity. The expansion material is used to expand in volume after curing to drive the slider to move outwards. The technical solution provided by the present invention can effectively absorb the dimensional clearance between the transverse axes, thereby eliminating the structural design of the adjustment shim.

Description

Technical Field

[0001] The present invention relates to the technical field of construction machinery, and particularly relates to an adaptive adjustment bearing, a bearing assembly, a power transmission system and an automobile. Background Art

[0002] A rolling bearing is a precision mechanical element that changes the sliding friction between a rotating shaft and a shaft seat into rolling friction, thereby reducing friction loss. The structure of a traditional rolling bearing generally consists of four parts: an inner ring, an outer ring, rolling elements and a cage. The function of the inner ring is to cooperate with the shaft and rotate with the shaft; the function of the outer ring is to cooperate with the bearing seat and play a supporting role; the rolling elements are evenly distributed between the inner ring and the outer ring with the help of the cage; the cage can evenly distribute the rolling elements and guide the rolling elements to rotate and play a lubricating role.

[0003] The structure of a traditional rolling bearing is simple, but in the actual application process, due to the accumulation of factors such as machining accuracy and assembly error, the bearing usually needs to be paired with corresponding bearing adjustment shims to absorb the lateral dimensional chain tolerance. In some occasions with a long dimensional chain, the selection and grouping of shims can often reach twenty or thirty groups. The selection and distribution of shims greatly affect the assembly efficiency and resource waste. Summary of the Invention

[0004] The main object of the present invention is to provide an adaptive adjustment bearing, aiming to effectively absorb the dimensional gap between the transverse shafts and ensure that the gear shaft system will not move laterally.

[0005] To achieve the above object, the adaptive adjustment bearing proposed by the present invention is used to be installed on an installation base, and includes:

[0006] An outer bearing ring, a groove is formed on the outer end face of the outer bearing ring; and,

[0007] A slider, one end of the slider extends into the groove, and is in sealed and sliding fit with the side wall of the groove. A sealed cavity is defined between the slider and the bottom of the groove, and the other end of the slider is used to contact the installation base;

[0008] A liquid injection hole communicating with the sealed cavity is provided on the outer bearing ring or the slider. A detachable seal is provided at the liquid injection hole. The liquid injection hole is used to inject a liquid expansion material into the sealed cavity. The expansion material is used to expand in volume after curing to drive the slider to move outwards.

[0009] Optionally, the liquid injection hole is provided on the slider.

[0010] Optionally, the liquid injection hole is a threaded hole;

[0011] The seal includes a sealing screw, which is in threaded fit with the threaded hole.

[0012] Optionally, the groove is annularly arranged;

[0013] Correspondingly, the slider is annularly arranged.

[0014] Optionally, limiting convex parts are formed on both side walls of the groove;

[0015] The slider is arranged in a stepped shape to form stepped surfaces opposite to the two limiting convex parts, so as to limit the slider from disengaging from the groove.

[0016] The present invention also provides a bearing assembly, which includes the self - adaptive adjustment bearing and further includes an expansion material. The self - adaptive adjustment bearing is used for being installed on an installation base, and includes:

[0017] An outer bearing ring, on the outer end face of which a groove is opened; and,

[0018] A slider, one end of which extends into the groove and is in sealed and sliding fit with the side wall of the groove. A sealing cavity is defined between the slider and the bottom of the groove, and the other end of the slider is used for contacting the installation base;

[0019] A liquid injection hole communicating with the sealing cavity is provided on the outer bearing ring or the slider, and a detachable seal is arranged at the liquid injection hole. The liquid injection hole is used for injecting a liquid expansion material into the sealing cavity, and the expansion material is used for expanding in volume after curing to drive the slider to move outwards.

[0020] Optionally, the melting point of the expansion material is higher than the ambient temperature of its operation; and,

[0021] The expansion material is arranged in the sealing cavity and is used for filling the sealing cavity in a solution state, so as to expand in volume after solidification to drive the slider to move outwards.

[0022] The present invention also provides a power transmission system including the bearing assembly as described above.

[0023] The present invention also provides an automobile including the power transmission system as described above.

[0024] The technical solution of the present invention adopts an adaptive adjustment bearing including an outer bearing ring and a slider. A sealing cavity is defined between the slider and the bottom of the groove of the outer bearing ring. After the slider, the outer bearing ring, the balls, and the inner bearing ring are assembled, an expansion material is injected into the sealing cavity through a liquid injection hole. The volume of the expansion material will expand after curing, thereby driving the slider to move outward. The upper end surface of the slider is closely attached to the installation base, and there is no need to match corresponding bearing adjustment shims like traditional bearings to absorb the lateral dimensional chain tolerance and ensure that the entire shafting does not move laterally. The integrated bearing design solution of this invention patent can eliminate the structural design of adjustment shims, simplify the part system, and there is no need for actual selection and adjustment during the assembly process due to the absence of the adjustment shim structure, greatly improving the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0026] Figure 1 FIG. is a schematic structural diagram of an embodiment of the adaptive adjustment bearing of the present invention;

[0027] Figure 2 is Figure 1 an exploded schematic diagram of the adaptive adjustment bearing in ;

[0028] Figure 3 is Figure 1 a sectional view of the adaptive adjustment bearing in.

[0029] The following is the description of the reference numerals in the embodiments provided by the present invention:

[0030] Label Name Label Name 100 Adaptive adjustment bearing 3 Seal 1 Outer ring of bearing 31 Sealing screw 11 Groove 4 Ball 12 Sealing cavity 5 Inner ring of bearing 13 Limit convex part 2 Slider 21 Liquid injection hole

[0031] The realization, functional features, and advantages of the object of the present invention will be further described in conjunction with the embodiments with reference to the drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0033] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture (as shown in the attached drawings). If the specific posture changes, the directional indications will also change accordingly.

[0034] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0035] The structure of a traditional rolling bearing is simple, but in the actual application process, due to the accumulation of factors such as machining precision and assembly errors, the bearing usually needs to be paired with corresponding bearing adjustment shims to absorb the lateral dimensional chain tolerance. In some cases where the dimensional chain is long, the selection and grouping of shims can often reach twenty or thirty groups. The selection and distribution of shims greatly affect the assembly efficiency and resource waste.

[0036] To solve the above problems, the present invention proposes an adaptive adjustment bearing 100 ， which can enable the bearing to automatically absorb assembly errors and ensure that the gear shafting does not move laterally. Refer to Figures 1 to 3 , Figure 1 which is a schematic structural diagram of an embodiment of the adaptive adjustment bearing of the present invention; Figure 2 is Figure 1 the exploded view of the adaptive adjustment bearing in Figure 3 is Figure 1 the sectional view of the adaptive adjustment bearing in

[0037] In the embodiments of the present invention, please refer to Figure 1 Figure 2, the adaptive adjustment bearing 100 is used to be installed on an installation base, and includes a bearing outer ring 1 and a slider 2. A groove 11 is formed on the outer end face of the bearing outer ring 1; one end of the slider 2 extends into the groove 11 and is in sealed and sliding fit with the side wall of the groove 11. A sealing cavity 12 is defined between the slider 2 and the bottom of the groove 11. The other end of the slider 2 is used to contact the installation base; a liquid injection hole 21 communicating with the sealing cavity 12 is provided on the bearing outer ring 1 or the slider 2. A detachable seal 3 is provided at the liquid injection hole 21. The liquid injection hole 21 is used to inject a liquid expansion material into the sealing cavity 12. The expansion material is used to expand in volume after curing to drive the slider 2 to move outwards.

[0038] It can be understood that rolling bearings are applied to many parts of an automobile, such as generators, water pumps, manual transmissions, automatic transmissions, transfer cases, drive shafts, drive axles, and hubs of the running gear. The performance of the rolling bearing directly affects the working condition of the machine and is an important part of the machine. Taking the drive shaft of an automobile as an example, this solution is specifically described. The adaptive adjustment bearing 100 is installed on an installation base and includes balls, a bearing inner ring 5, a bearing outer ring 1, and a slider 2. The balls and the bearing inner ring 5 are matched with the drive shaft. A groove 11 is formed on the outer end face of the bearing outer ring 1. A sealing cavity 12 is defined between the bottom of the groove 11 and the slider 2. By injecting a liquid expansion material into the sealing cavity 12, the expansion material expands in volume after curing to drive the slider 2 to move outwards, so that the adaptive adjustment bearing 100 can automatically absorb assembly errors, no adjustment shims are needed anymore, and at the same time, it is ensured that the gear shaft system will not move laterally.

[0039] To facilitate pouring the expansion material into the sealing cavity 12, a liquid injection hole 21 communicating with the sealing cavity 12 is provided on the bearing outer ring 1 or the slider 2. For convenient operation, the liquid injection hole 21 on the bearing outer ring 1 is arranged to extend along the radial direction of the bearing outer ring 1, is arranged on the periphery of the bearing outer ring 1, and a plurality of them are evenly spaced; the liquid injection hole 21 on the slider 2 is arranged to extend along the axial direction of the slider 2, is arranged on the periphery of the slider 2, and a plurality of them are evenly spaced. And to prevent the leakage of the expansion material, a detachable seal 3 is provided at the liquid injection hole 21.

[0040] In this embodiment, please refer to Figure 1 , the liquid injection hole 21 is arranged on the slider 2. A plurality of liquid injection holes 21 are provided, preferably 4, and are symmetrically distributed on the periphery of the slider 2. This arrangement is convenient for pouring the expansion material and is also beautiful.

[0041] The present invention does not limit the specific forms of the liquid injection hole 21 and the seal 3. Under different application requirements, it can be the sealing fit between a round hole and a plastic sealing cover, or the fit between a threaded hole and a screw rod with an external thread. In this embodiment, please refer to Figure 2 , the liquid injection hole 21 is a threaded hole; the seal 3 includes a sealing screw rod 31, and the sealing screw rod 31 is in threaded fit with the threaded hole, so that the seal 3 is firmly sealed at the liquid injection hole 21. After the slider 2, the bearing outer ring 1, the balls 4, and the bearing inner ring 5 are assembled, an expansion material is injected into the sealing bolt hole. Under special requirements, a vacuum pumping operation can be performed. The conventional recommended injection amount of the expansion material is 1 / 2 of the volume of the sealing cavity 12. After the injection process is completed, the sealing bolt is tightened for sealing.

[0042] In this embodiment, please refer to Figure 2 , the groove 11 is arranged in a ring shape. Correspondingly, the slider 2 is arranged in a ring shape. It can be understood that the bearing outer ring 1 is generally arranged in a circular ring shape. For the convenience of processing, the groove 11 is arranged in a circular ring shape by using the outer shape structure of the bearing outer ring 1. A circle of protrusions is formed around one end of the bearing outer ring 1, thus forming a circular ring-shaped groove 11. In order to make the slider 2 cooperate with the bearing outer ring 1, the slider 2 is also correspondingly arranged in a circular ring shape.

[0043] Further, in this embodiment, please refer to Figure 3 , limiting convex portions 13 are formed on both side walls of the groove 11, and the limiting convex portions 13 are arranged along the periphery of the bearing outer ring 1; the slider 2 is arranged in a stepped shape to form stepped surfaces opposite to the two limiting convex portions 13. The diameter of the ring at one end of the slider 2 close to the bearing outer ring 1 is larger than the diameter of the ring at the end far from the bearing outer ring 1, so as to prevent the slider 2 from disengaging from the groove 11. At the same time, the slider 2 can freely slide along the axial direction of the bearing outer ring 1 in the sealing cavity 12.

[0044] The present invention also provides a bearing assembly, which includes the self-adaptive adjustment bearing 100. This bearing assembly includes an expansion material and the self-adaptive adjustment bearing 100. The specific structure of the self-adaptive adjustment bearing 100 refers to the above embodiment. Since this bearing assembly adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one. After the slider 2, the bearing outer ring 1, the balls 4, and the bearing inner ring 5 are assembled, the expansion material is injected into the sealing cavity 12 through the liquid injection hole 21. After the injection process is completed, the seal is tightened for sealing.

[0045] Furthermore, the melting point of the expansion material is higher than the ambient temperature at which it operates. When the adaptive adjustment bearing 100 is operating normally, the expansion material is in a solid state. Before operation, first heat the bearing outer ring 1 and the bearing inner ring 5 so that the bearing temperature is higher than the melting point of the expansion material. After the slider 2, the bearing outer ring 1, the ball 4, and the bearing inner ring 5 are assembled, inject the expansion material into the sealing cavity 12. The expansion material is heated and melted. At this time, the slider 2 can freely slide along the axial direction of the bearing outer ring 1 in the cavity, and the adaptive adjustment bearing 100 can be easily installed into the mounting base; the expansion material is arranged in the sealing cavity 12, and the expansion material is used to fill the sealing cavity 12 in a liquid state. After the bearing outer ring 1 and the bearing inner ring 5 of the bearing cool down, the expansion material solidifies and its volume increases to drive the slider 2 to move outwards.

[0046] The working principle of the present invention is as follows: After the slider 2, the bearing outer ring 1, the ball 4, and the bearing inner ring 5 are assembled; inject the expansion material into the sealing cavity 12 through the liquid injection hole 21. The conventional recommended injection volume of the expansion material (in liquid state) is 1 / 2 of the volume of the cavity. After the injection process is completed, tighten the sealing bolt to seal. In the normal temperature state, the expansion material is a solid substance. According to the principle of thermal expansion and contraction, the expansion material will push the adaptive slider 2 outwards. Therefore, before assembling the adaptive adjustment bearing 100 of the present invention, the adaptive adjustment bearing 100 should be heated first so that the temperature of the adaptive adjustment bearing 100 is higher than the melting point of the expansion material. At this time, the slider 2 can freely slide up and down in the cavity, and the adaptive adjustment bearing 100 can be easily installed into the mounting base. When the adaptive adjustment temperature is lower than the melting point of the expansion material, the expansion material solidifies, and the expansion material with expanded volume pushes out the slider 2, and the upper end surface of the slider 2 is in close contact with the mounting base, thereby ensuring that the entire shafting will not move laterally.

[0047] The present invention also proposes a power transmission system, which includes the bearing assembly. The automotive power transmission system includes a clutch, a transmission, a drive shaft, a main reducer, a differential, and a half shaft. The drive shaft cooperates with the bearing inner ring 5 and the ball 4 of the adaptive adjustment bearing 100 to achieve power transmission.

[0048] The present invention also proposes an automobile, which includes the power transmission system. The power of the automobile is mainly output by the engine. After torque increase and speed change through the clutch and the transmission, it is transmitted to the driving wheels through the drive shaft, the main reducer, etc.

[0049] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. An adaptive adjustment bearing for installation on an installation base, characterized in that, Comprising: An outer ring of a bearing, a groove being formed in an outer end face of the outer ring of the bearing; and, A slider, one end of the slider extending into the groove and being in sealing and sliding fit with a side wall of the groove, a sealing cavity being defined between the slider and a bottom of the groove, and the other end of the slider being used for contacting an installation base; The outer ring of the bearing or the slider is provided with a liquid injection hole communicating with the sealing cavity, a detachable seal being provided at the liquid injection hole, the liquid injection hole being used for injecting a liquid expansion material into the sealing cavity, and the expansion material being used for expanding in volume after curing so as to drive the slider to move outwards.

2. The adaptive adjustment bearing according to claim 1, wherein The liquid injection hole is provided on the slider.

3. The adaptive adjustment bearing according to claim 1 or 2, characterized in that The liquid injection hole is a threaded hole; The seal includes a sealing screw, and the sealing screw is in threaded fit with the threaded hole.

4. The adaptive adjustment bearing according to claim 1, characterized in that The groove is annularly arranged; Correspondingly, the slider is annularly arranged.

5. The adaptive adjustment bearing according to claim 4, wherein Limiting convex portions are formed on two side walls of the groove; The slider is arranged in a stepped shape so as to form stepped surfaces opposite to the two limiting convex portions, so as to prevent the slider from disengaging from the groove.

6. A bearing assembly, characterized in that, The bearing assembly includes the self-adaptive adjustment bearing according to any one of claims 1-5, and further includes an expansion material.

7. The bearing assembly according to claim 6, characterized in that, The melting point of the expansion material is higher than the ambient temperature at which it works; and, An expansion material is arranged in the sealing cavity, and the expansion material is used for filling the sealing cavity in a solution state so as to expand in volume after solidification, so as to drive the slider to move outwards.

8. A power transmission system, characterized in that, Including the bearing assembly according to any one of claims 6-7.

9. A vehicle, characterized in that, Including the power transmission system according to claim 8.

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