CN216009273U - Combined main shaft bearing - Google Patents

Abstract

The utility model discloses a combined type main shaft bearing, which comprises a shell, the inner shell and the ball are characterized in that a round hole is installed in the middle of the top end of the outer shell, an internal thread is installed on the top end of the inner wall of the round hole, a screw plug is installed on the top end of the inside of the round hole, the bottom of the screw plug is connected with the internal thread in a threaded mode all around, annular baffles are installed on two sides of the outer shell respectively, an inner shell is installed inside the outer shell, balls are installed in gaps between the inner shell and the outer shell, a limiting ring is installed between the balls and is movably connected with the balls, first grooves are installed on the outer shell and the inner shell respectively, the upper end and the lower end of each ball are movably connected with the first grooves respectively, a partition plate is installed on one side of each ball respectively, the middle of each partition plate is fixedly connected with the periphery of the inner shell, second grooves are installed on two sides of the inner wall of the outer shell respectively, the second grooves are movably connected with the partition plates, and the annular baffles are movably connected with one side of the outer shell. The utility model discloses simple structure, convenient operation.

Description

Combined main shaft bearing

Technical Field

The utility model relates to a main shaft bearing technical field particularly, relates to a modular main shaft bearing.

Background

The conventional main shaft bearing seal structure of the stirrer mainly comprises an oil seal and a labyrinth seal, wherein the oil seal adopts a framework lip-shaped seal ring, and a certain radial holding force is generated on a seal shaft through the pressure of a cutting edge of the seal ring and the telescopic force of a self-tightening spring to block a leakage gap so as to achieve the purpose of sealing; the labyrinth seal is characterized in that a plurality of sealing teeth which are sequentially arranged are arranged on a main shaft, a series of interception gaps and expansion cavities are formed among the teeth, and the sealed medium generates interception effect when passing through the gaps of the zigzag labyrinth so as to achieve the purpose of leakage resistance.

When the stirrer works, a large amount of particles and slurry enter the bearing seat along the axial clearance of the main shaft, so that the damping of the bearing is increased, and the premature failure of the bearing is caused. Although the framework-type lip-shaped sealing ring is simple in structure and easy to install, slurry and debris come along the main shaft due to the fact that the installation position is close to the box body of the stirrer, and the sealing ring is directly extruded to deform, so that gaps are formed, and sealing failure is caused; when the labyrinth seal is adopted, though impact damage to the chippings and materials can be well borne, the labyrinth seal is mainly good in using effect in a high-pressure and high-speed occasion, the rotating speed of a main shaft of the stirring machine is low, pressure is low, the chippings and slurry easily enter a bearing from a gap between a front screw cap and a front small cover, and the bearing is caused to lose efficacy.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a modular main shaft bearing to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a combined spindle bearing comprises an outer shell, an inner shell and balls, and is characterized in that a round hole is installed in the middle of the top end of the outer shell, an internal thread is installed at the top end of the inner wall of the round hole, a screw plug is installed at the top end inside the round hole, the periphery of the bottom end of the screw plug is in threaded connection with the internal thread, annular baffles are installed on two sides of the outer shell respectively, the inner shell is installed inside the outer shell, the balls are installed in a gap between the inner shell and the outer shell, a limiting ring is installed between the balls and is movably connected with the balls, first grooves are installed on the outer shell and the inner shell respectively, the upper end and the lower end of each ball are movably connected with the first grooves respectively, a partition plate is installed on one side of each ball respectively, the middle of the partition plate is fixedly connected with the periphery of the inner shell, and second grooves are installed on two sides of the inner wall of the outer shell respectively, the second groove is movably connected with the partition plate, and the annular baffle is movably connected with one side of the shell.

Furthermore, an airtight gasket is arranged around the bottom end of the screw plug.

Furthermore, the middle part of the inner shell is movably connected with the shaft rod.

Furthermore, a heat dissipation metal layer is arranged in an interlayer between the outer shell and the inner shell.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses a round hole staff later stage pours into lubricating oil into the bearing into, reinforcing lubricating property, reduction frictional force. Meanwhile, the partition plate can prevent lubricating oil from leaking to the outer side, and waste of the lubricating oil is reduced. The annular baffle can block dust from entering the inside of the bearing, and damage to the bearing is prevented.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is an overall cross-sectional schematic view of a combination spindle bearing;

fig. 2 is a schematic side view of the entire combination type main shaft bearing.

Reference numerals:

1. a housing; 2. a first groove; 3. a circular hole; 4. a plug screw; 5. an internal thread; 6. a limiting ring; 7. a ball bearing; 8. a partition plate; 9. an inner shell; 10. an annular baffle; 11. a second groove.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-2, a combined spindle bearing according to an embodiment of the present invention includes an outer shell 1, an inner shell 9 and balls 7, and is characterized in that a circular hole 3 is installed at a middle portion of a top end of the outer shell 1, an internal thread 5 is installed at a top end of an inner wall of the circular hole 3, a plug screw 4 is installed at an inner top end of the circular hole 3, a bottom end of the plug screw 4 is connected with the internal thread 5 at a periphery thereof, annular baffles 10 are respectively installed at two sides of the outer shell 1, the inner shell 9 is installed inside the outer shell 1, the balls 7 are installed in a gap between the inner shell 9 and the outer shell 1, a spacing ring 6 is installed between the balls 7, the spacing ring 6 is movably connected with the balls 7, first grooves 2 are respectively installed on the outer shell 1 and the inner shell 9, upper and lower ends of the balls 7 are movably connected with the first grooves 2 respectively, the ball bearing structure is characterized in that a partition plate 8 is respectively installed on one side of the ball bearing 7, the middle part of the partition plate 8 is fixedly connected with the periphery of the inner shell 9, second grooves 11 are respectively installed on two sides of the inner wall of the outer shell 1, the second grooves 11 are movably connected with the partition plate 8, and the annular baffle plate 10 is movably connected with one side of the outer shell 1.

Through the above technical scheme of the utility model, airtight packing ring is installed all around to the bottom of plug screw 4, the middle part and the axostylus axostyle swing joint of inner shell 9, shell 1 with install the heat dissipation metal level in the intermediate layer of inner shell 9.

The working principle is as follows: unscrewing plug screw 4 and can injecting lubricating oil into round hole 3, round hole 3 is plugged up again to later plug screw 4, and baffle 8 can block lubricating oil and leak the outside from the clearance of shell 1 with inner shell 9 simultaneously, has saved the use amount of lubricating oil. The heat dissipation metal layers in the outer shell 1 and the inner shell 9 can accelerate the heat dissipation of the device and prevent the device from being affected by overhigh heat. The annular baffle 10 can prevent external dust from entering the gap of the bearing, and the service life of the bearing is prolonged.

In summary, the following steps: the utility model discloses a round hole staff later stage pours into lubricating oil into the bearing into, reinforcing lubricating property, reduction frictional force. Meanwhile, the partition plate can prevent lubricating oil from leaking to the outer side, and waste of the lubricating oil is reduced. The annular baffle can block dust from entering the inside of the bearing, and damage to the bearing is prevented.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (4)

1. A combined spindle bearing comprises an outer shell (1), an inner shell (9) and balls (7), and is characterized in that a round hole (3) is installed in the middle of the top end of the outer shell (1), an internal thread (5) is installed at the top end of the inner wall of the round hole (3), a screw plug (4) is installed at the top end of the inner portion of the round hole (3), the bottom end of the screw plug (4) is in threaded connection with the internal thread (5) all around, annular baffles (10) are installed on two sides of the outer shell (1) respectively, the inner shell (9) is installed inside the outer shell (1), the balls (7) are installed in a gap between the inner shell (9) and the outer shell (1), a limiting ring (6) is installed between the balls (7), the limiting ring (6) is movably connected with the balls (7), and first grooves (2) are installed on the outer shell (1) and the inner shell (9) respectively, the upper and lower both ends of ball (7) respectively with first recess (2) swing joint, baffle (8) are installed respectively to one side of ball (7), the middle part of baffle (8) with the fixed connection all around of inner shell (9), second recess (11) are installed respectively to the inner wall both sides of shell (1), second recess (11) with baffle (8) swing joint, ring baffle (10) with one side swing joint of shell (1).

2. A combined spindle bearing according to claim 1, characterised in that the plug screw (4) is fitted with a gas-tight gasket around its bottom end.

3. A combined spindle bearing according to claim 1, characterised in that the middle of the inner housing (9) is movably connected to a shaft.

4. A combined spindle bearing according to claim 1, characterised in that a heat-dissipating metal layer is mounted in the interlayer between the outer shell (1) and the inner shell (9).

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