Thrust bearing

Abstract

The utility model provides a thrust bearing and relates to the technical field of bearings. Comprising a bearing body, the bearing body comprises a shaft piece, a seat piece and a retainer located between the shaft piece and the seat piece, the retainer is rotationally provided with a plurality of rolling balls, and the rolling balls abut against the shaft piece and the seat piece respectively; the bearing body is sleeved with a limiting protection sleeve along the peripheral side of the bearing body, the limiting protection sleeve comprises a first semicircular protection sleeve and a second semicircular protection sleeve, the first protection sleeve and the second protection sleeve are arranged on the peripheral side of the bearing body in a sleeving mode, and the first protection sleeve and the second protection sleeve are detachably connected. By the adoption of the bearing, the shaft piece and the seat piece can be fixed in an auxiliary mode, relative rotation of the shaft piece and the seat piece is not affected, the shaft piece, the seat piece and the rolling ball in the middle can be prevented from being separated, and movement and transportation of the bearing are facilitated; and gaps between the outer side walls of the shaft piece and the seat piece can be shielded, so that the risk that outside dust or other impurities enter the bearing is reduced, the service life of the bearing is prolonged, and the stability of the bearing is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bearing technical field, specifically, relate to a thrust bearing. BACKGROUND

[0002] Thrust bearing is generally composed of two thrust washers or more thrust washers and several rolling bodies, and the thrust washer is generally divided into a shaft piece and a seat piece, and the rolling body is generally combined into a whole by an iron or copper retainer. The most common type of this type of bearing is a steel ball type thrust bearing. Thrust bearing is a special bearing used to bear axial force, that is, the bearing of the force in the direction parallel to the shaft.

[0003] The existing thrust bearing is mainly abutted by the middle steel ball and the shaft piece and the seat piece on both sides, without other fixing structure, so when the two sides of the thrust bearing are not connected with other objects, the shaft piece, the seat piece and the middle steel ball are easy to separate, and are not easy to move and transport. Moreover, the shaft piece and the seat piece are generally arranged at intervals, and the dust or other impurities outside is easy to enter the bearing from the gap between the outer side walls of the shaft piece and the seat piece, affecting the service life and stability of the bearing. SUMMARY

[0004] The utility model discloses a kind of thrust bearings, it can be assisted fixed to shaft piece and seat piece and not affect the relative rotation of shaft piece and seat piece, can prevent shaft piece, seat piece and the rolling ball of middle separation, facilitate the movement and transport of bearing;And the gap between the outer side walls of shaft piece and seat piece can be shielded, reduce the risk of outside dust or other impurities entering, improve the service life and stability of bearing.

[0005] The utility model discloses the technical scheme for being adopted as follows:

[0006] The application embodiment provides a kind of thrust bearings, including bearing body, bearing body includes shaft piece, seat piece and the retainer between shaft piece and seat piece, the retainer is rotatably provided with multiple rolling balls, and the rolling ball is respectively abutted with shaft piece and seat piece;Limiting protective sleeve is sleeved along the circumferential side of bearing body, and limiting protective sleeve includes two first protective sleeves and second protective sleeves with semicircular shape, first protective sleeve and second protective sleeve are all sleeved on the circumferential side of bearing body, and first protective sleeve and second protective sleeve are detachably connected.

[0007] Further, in some embodiments of the utility model, the two ends of the second protective sleeve are provided with connecting pins, and the two ends of the first protective sleeve are provided with connecting insertion holes.

[0008] Further, in some embodiments of the utility model, further including locking bolt, locking bolt passes through first protective sleeve and is threadedly connected with connecting pin.

[0009] Further, in some embodiments of the utility model, the inner side wall of the first protective sleeve and the inner side wall of the second protective sleeve are each provided with a plurality of balls, the shaft piece is provided with an annular limiting sliding groove along the circumferential side, and the balls are slidably embedded in the limiting sliding groove.

[0010] Further, in some embodiments of the utility model, a plurality of fixing bolts are further included, the first protective sleeve and the second protective sleeve are each provided with a plurality of mounting holes, and the fixing bolts pass through the mounting holes and are threadedly connected with the seat piece.

[0011] Further, in some embodiments of the utility model, a sealing gasket is arranged between the inner side wall of the limiting protective sleeve and the outer side wall of the seat piece.

[0012] Further, in some embodiments of the utility model, the bearing body is made of polyimide.

[0013] Compared with the prior art, the embodiments of the utility model have at least the following advantages or beneficial effects:

[0014] The utility model discloses a thrust bearing, including bearing body, the bearing body includes the shaft piece, the seat piece and the retainer between the shaft piece and the seat piece, and the retainer is rotatably provided with a plurality of rolling balls, and the rolling ball is respectively with the shaft piece and the seat piece and meets the interface, bearing body is along its circumferential side and is provided with the limiting protective sleeve of sleeve, and the limiting protective sleeve includes two first protective sleeve and second protective sleeve of semicircular shape, and the first protective sleeve and second protective sleeve are all sleeve and are arranged in the circumferential side of bearing body, and the first protective sleeve and second protective sleeve can detachable connection. It can assist the fixed shaft piece and seat piece and do not influence the relative rotation of shaft piece and seat piece, can prevent the separation of shaft piece, seat piece and intermediate rolling ball, facilitate the movement and transportation of bearing, and can shield the gap between the outer side wall of shaft piece and seat piece, reduce the risk of outside dust or other impurities into, improve the service life and stability of bearing. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be briefly introduced to the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and therefore should not be regarded as the limitation to the scope, and for the ordinary skilled person in the art, other related drawings can be obtained according to these drawings without the creative labor.

[0016] Figure 1 The front view of the bearing provided by the embodiments of the utility model is provided.

[0017] Figure 2 The sectional view of the bearing provided by the embodiments of the utility model is provided.

[0018] Figure 3The exploded view of the limiting protective sleeve is provided for the embodiment of the utility model.

[0019] Figure 4 The front view of the bearing string composed of multiple bearings is provided for the embodiment of the utility model.

[0020] Icon: 1 - shaft piece; 2 - seat piece; 3 - rolling ball; 4 - retainer; 5 - first protective sleeve; 6 - second protective sleeve; 7 - connecting bolt; 8 - connecting socket; 9 - locking bolt; 10 - ball; 11 - limiting sliding slot; 12 - fixing bolt; 13 - sealing gasket. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0023] It should be noted that: similar signs and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0024] In the description of the embodiments of the utility model, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship of the utility model product when it is usually placed, only for the convenience of describing the utility model and simplifying the description, and it does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, if the terms "first", "second" and the like appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0025] Furthermore, the use of terms such as "horizontal" or "vertical" does not imply that the component must be absolutely horizontal or vertical, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Example

[0028] Please refer to Figures 1-3 This embodiment provides a thrust bearing, including a bearing body, which includes a shaft plate 1, a seat plate 2, and a cage 4 located between the shaft plate 1 and the seat plate 2. The cage 4 is rotatably provided with a plurality of rolling balls 3, which abut against the shaft plate 1 and the seat plate 2 respectively. A limiting protective sleeve is provided around the bearing body, which includes two semi-circular first protective sleeves 5 and second protective sleeves 6. Both the first protective sleeves 5 and the second protective sleeves 6 are fitted around the bearing body and are detachably connected.

[0029] The second protective sleeve 6 has connecting pins 7 at both ends, and the first protective sleeve 5 has connecting holes 8 at both ends. The connecting pins 7 are inserted into the connecting holes 8. A locking bolt 9 is also included, which passes through the first protective sleeve 5 and is threadedly connected to the connecting pins 7. By providing the locking bolt 9, it is easy to fix the connecting pins 7 to the first protective sleeve 5, thereby facilitating the mutual fixing and disassembly of the first protective sleeve 5 and the second protective sleeve 6.

[0030] In actual use, after installing the bearing body, the first protective sleeve 5 and the second protective sleeve 6 are fitted around the bearing body. The connecting pins 7 at both ends of the second protective sleeve 6 are inserted into the connecting holes 8 at both ends of the first protective sleeve 5. Then, the locking bolts 9 pass through the first protective sleeve 5 and are threadedly connected to the connecting pins 7. In this way, the first protective sleeve 5 and the second protective sleeve 6 are locked and fixed by the locking bolts 9. At this time, the limiting protective sleeves wrap around the bearing body to provide protection, which can help fix the shaft piece 1 and the seat piece 2 without affecting the relative rotation of the shaft piece 1 and the seat piece 2. It can prevent the shaft piece 1, the seat piece 2 and the rolling ball 3 in the middle from separating, which facilitates the movement and transportation of the bearing. Moreover, it can block the gap between the outer walls of the shaft piece 1 and the seat piece 2, reducing the risk of external dust or other impurities entering, and improving the service life and stability of the bearing.

[0031] Optionally, such as Figure 4 As shown, since many tools use thrust bearings in series, this embodiment can improve its applicability by stacking multiple thrust bearings together to form a thrust bearing string.

[0032] like Figures 1-3 As shown, in some embodiments of this utility model, the inner sidewalls of the first protective sleeve 5 and the second protective sleeve 6 are each provided with a plurality of balls 10, and the shaft plate 1 is provided with an annular limiting groove 11 along its circumference, and the balls 10 slide into the limiting groove 11. It also includes a plurality of fixing bolts 12, and both the first protective sleeve 5 and the second protective sleeve 6 are provided with a plurality of mounting holes, through which the fixing bolts 12 pass and are threadedly connected to the seat plate 2.

[0033] This utility model, by setting multiple balls 10 and fixing bolts 12, allows the ball 10 to slide into the limiting groove 11 when the limiting protective sleeve is installed. The fixing bolts 12 pass through the mounting hole and are threadedly connected to the seat plate 2, thus fixing the limiting protective sleeve to the seat plate 2. The shaft plate 1 can rotate relative to the seat plate 2 and the limiting protective sleeve. In this way, the limiting protective sleeve can be fixed to the bearing body without affecting the relative rotation of the shaft plate 1 and the seat plate 2 of the bearing body. This does not affect the use of the bearing and makes it easy to remove the limiting protective sleeve to inspect and replace the various structures of the bearing body. The operation is convenient.

[0034] like Figures 1-3 As shown, in some embodiments of this utility model, a sealing gasket 13 is provided between the inner wall of the limiting protective sleeve and the outer wall of the seat piece 2.

[0035] This invention improves the sealing performance of the limiting protective sleeve by setting a sealing gasket 13, which can be a rubber gasket, to seal the gap between the inner wall of the limiting protective sleeve and the outer wall of the seat piece 2.

[0036] likeFigures 1-3 As shown, in some embodiments of this utility model, the bearing body is made of polyimide. Polyimide structures have advantages such as high rigidity and hardness, high temperature resistance, excellent mechanical properties, good insulation properties, thermal stability, and low temperature resistance.

[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and that the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application.

[0038] Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this application is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims. Various modifications and variations of this invention are possible for those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. A thrust bearing, comprising a bearing body, the bearing body including a shaft plate, a seat plate, and a cage located between the shaft plate and the seat plate, the cage being rotatably provided with a plurality of rolling balls, the rolling balls respectively abutting against the shaft plate and the seat plate; characterized in that: The bearing body is fitted with a limiting protective sleeve along its periphery. The limiting protective sleeve includes two semi-circular first protective sleeves and second protective sleeves. Both the first protective sleeve and the second protective sleeve are fitted around the periphery of the bearing body and are detachably connected.

2. A thrust bearing according to claim 1, characterized in that: The second protective sleeve has connecting pins at both ends, and the first protective sleeve has connecting holes at both ends, with the connecting pins inserted into the connecting holes.

3. A thrust bearing according to claim 2, characterized in that: It also includes a locking bolt that passes through the first protective sleeve and is threadedly connected to the connecting pin.

4. A thrust bearing according to claim 1, characterized in that: The inner wall of the first protective sleeve and the inner wall of the second protective sleeve are provided with a plurality of balls, and the shaft plate is provided with an annular limiting groove along its periphery, and the balls slide into the limiting groove.

5. A thrust bearing according to claim 1, characterized in that: It also includes multiple fixing bolts. Both the first protective sleeve and the second protective sleeve are provided with multiple mounting holes. The fixing bolts pass through the mounting holes and are threadedly connected to the seat plate.

6. A thrust bearing according to claim 5, characterized in that: A sealing gasket is provided between the inner wall of the limiting protective sleeve and the outer wall of the seat plate.

7. A thrust bearing according to claim 1, characterized in that: The bearing body is made of polyimide.

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